IP 31 Press Bulletin Series STATE OF ILLINOIS ^ 0l1 "* Q " fadu ' t *» !. SL HENRY HORNER, Governor DEPARTMENT OF REGISTRATION AND EDUCATION JOHN J. HALLIHAN, Director DIVISION OF THE STATE GEOLOGICAL SURVEY M. M. LEIGHTON, Chief, Urbana No 31 ILLINOIS PETROLEUM July 1, 1938 Oil and Gas Development in Illinois in 1937 By Alfred H. Bell (New York Meeting, February, 1938) The year 1937 has been outstanding in the history of the Illinois oil ^ U £ trebled C ° UrSe f ° f the ^ the StatG ' S dai1 ^ *«» to^7 nnn . ' ™ reasu |* h ° m 12 '° ° bbL per da ^ at the beginning to 37,000 bbl per day at the end, and the year's total, 7,426,000 bbl is 66 per cent above the previous year's production of 4,475 000 bbl The production in January was 368,000 bbl.; in December it was 1 085 000 Production from the old fields increased slightly Most of the ™ production is from fields in the central part oflhe Illmds BaL an are! ml i a r s m The yearS "^ «*™» ^ to the occurrence of od M Closkv "W-ffW h ° riZOn ° f the new field * » the McUosky sand, an oolitic limestone in the Ste. Genevieve formation of lower Mississippian age. uon Although development has not yet gone far enough to permit accurate =K££S^ new fie,ds ' ft is beIieved that they are of - ,n,n The + ^T^ are thG 0iI fidds discover ed in 1937 listed in order of count) at ^r^T a v he end of the year ; N ° bie oSSLS County) Clay City, including Southeast Clay City (Clay and Wavne counties), Patoka (Marion County), New Centralia ClinU Count v ) Olney (Richland County), Cisne (Wayne County), Bee her City (Z fte County), and Rinard (Wayne County). One gas field, the Ru Zue - :j ir:: e pr?' r *T? d ? i937 - ***»«*£ £2; new news see big. 1. A generalized geologic column for Illinois show mg producing horizons in the new fields, is given in Fig 2 The total productive area of the new fields at the end of 1937 was 1712 acres, in which 230 wells were producing. Thirty-five drv hZZ were drilled within tf mile of producing wells At the end I of Z there were 19 drilling wells, 28 rigs standing, 18 r gging up ^4 ^ew locations in these fields. P w In the whole state 447 wells were completed, of which 284 were oil Pjoduce^and three gas producers. Total initial daily p'odltL" of RepHnted from Tmns . A . r . M .E, 19 38) 127 , 34.5/ ^Q.g GE0L0 G1CA!. Printed in U.S. A. SURVEY LIBRARY FEB 4 m 2 OIL AND GAS DEVELOPMENT IN ILLINOIS IN 1937 the oil wells was 78,499 bbl., an average of 276 bbl. per well. At the end of the year the average production per well in the new fields was slightly more than 100 bbl. per day, as compared with 0.8 bbl. per well per day in the old fields. 1 Pat oka 2 Clay City 82 3 Clone 83 U Noble 81l 5 S.E. Clay City 82 6 Rlnard 85 7 Beecher City 86 8 South Olney 88 9 Centralis (New) 89 10 Buasellville (Gas) 91 ^0 1937 Discoveries C? Old fields ILLINOIS STATE GEOLOGICAL SURVEY Fig. 1. — Oil and gas fields of Illinois. Total footage drilled was 902,795 ft. in all wells and 581,141 in produc- ing wells. If the average cost of drilling is assumed to be $4.50 per foot, there was an investment in drilling of a little more than $4,000,000. The new fields produced up to the end of the year about 2,900,000 bbl. Half of the new wells began to produce after Oct. 1, and their average age at the end of the year was only about three months. Posted price at the end of the year was $1.35 per barrel, but a considerable amount of oil ILLINOIS STATE GEOLOGICAL SURVEY 3 3051 00005 0991 ALFRED H. BELL from the new fields was priced at $1.26. Assuming an average price for the year of SI. 30, returns from oil from the new fields amounted to $3,770,000. The production in the old fields was approximately DEPTH COL SEC PLEIgTOCfNT - PENNSYLVANIAN UPPER MISSISSIPPIAN CCHESTER) SERIES 2920 FT LOWER MISSISSIPPIAN SERIES "MISSISSIPPI LIME" MISSISSIPPIAN AND DEVON IAN ^po ORDOVICIAN sgp -i- ,i -i. i Fig. 2. — Generalized geologic column □ LIMESTONE COAL OOLOM1TIC LIMESTONE CHERT T^j SHALf L f^j CHERT I A OOLOMiT ROBINSON , BUCHANAN .BIEHL -2600 FT CYPRESS (WEILEFO "2700FT BETHEL (TRACEY. BENOIST) I ROSICLARE (BRADLEY SAND) > 2980 FT. MC CLOSKY (STE GENEVIEVE) •-4SI0 FT. ■N1AGARAN "' • ~59I0 FT. "TRENTON ,— 6700 FT ST PETER new Illinois Basin fields in Clay, Richland and Wayne Counties. 4,526,000 bbl., valued at approximately $6,100,000, for which the average price was $1.35. This gives a total value of $9,870,000 for all of the oil produced in Illinois in 1937. OIL AND GAS DEVELOPMENT IN ILLINOIS IN 1937 Geophysical methods of exploration^ especially the reflection seismo- graph method, are being depended upon to a large extent by the major oil companies active in the Illinois Basin. The number of seismograph crews operating in the state has varied from about 10 to 15 throughout Table 1. — Oil and Gas Production in Illinois Area Proved, Acres Total Oil Production, BM. Field, County Age, Years to End of Includes Swearingen gas. * Total of lines 37, 41, 42, 43, 44, 45, 46. ALFRED H. BELL the year, the average being about 12. Magnetic and gravity surveys are being used to a minor extent to indicate structural trends. A small amount of structure test drilling is also being carried on. Out of 127 wildcat wells drilled during 1937, 80 (63 per cent) were not located by any scientific means, 27 were located on the basis of seism o- Table 1. — (Continued) Total Oil Production, Bbl. Total Gas Production, Millions of Cu. Ft. Number of Oil and/or Gas Wells Daily >> T3 C H o During 1937 At End of 1937 1 1 Z During 1937 Average during To End of 1937 ar; 5 = B o O cs S3 T3 o 3 "S 3 ^ 2 E-i 1 821 2 22 1 13 13 2 X X X 1,616 3 48 367 367 3 X X X 185 V V y 4 X X X 1,438 3 y y V 5 X X X X 12 V y V 6 X X X 995 2 y 914 V 914 7 X X X 854 y V y y 8 X X X 90 y y y V 9 X X X 192 V y y V 10 X X X 70 y 44 V 44 11 X X X 532 16 472 472 12 X X X 41 y y V V 13 X X X 82 y V V y 14 X X X 319 y y V V 15 X X X 213 9 y 126 126 16 X X X 7 y y y 17 X X X 63 y y y IS X X X 21 y y V 19 X X X 34 y V y 20 X X X 39 y y y 21 X X 1 y 1 1 22 X X X X X X 485 9 y 448 y 448 23 X X X X X X 296 y V V V 24 X X X X X X 32 V y y y 25 X X X X X X 177 V V y y 26 X X 44 y V V V 27 X X X X X X 534 1 y 486 V 486 2^ X X X X X X 38 V V V y 29 X X X X X X 59 y V y y 30 X X X X X X 401 y V y V 31 X X z X X X 170 V y y y 32 X X X X X X 485 4 y 403 403 33 X X X X X X 309 y V V 34 X X X X X X 63 V y V 35 X X X X X X 182 y y V 36 461.560 1,201 X y V y 4,977 3 28 65 3,278 y 3,278 37 X X X X X X 7,319 1 153 5,235 y 5,235 38 X X X X X X 68 V y V y 39 X X X X X I 7,141 7 12 y V V V 40 X X X X X X 108 V V y y y 41 X X X X X X 296 1 2 180 180 42 X X X X X X 193 2 75 75 43 X X X X X X 256 1 y 222 222 44 X X X X X X 146 V 65 65 45 X X X X X X 286 3 1 y 154 154 4>; X X X X X X 684 2 V 480 480 47 1,632,174 4,410 X V y V 9,187 13 15 157 6,406 y 1 6,407 48 X X X X X X 4,388 V 3,304 V V 3,304 49 X X X X X X 1,231 V V V y y y 50 X X X X X X 475 V V V V V V 51 X X X X X X 243 y y V y y V b Footnotes to column heads and explanation of symbols are given on page 19. OIL AND GAS DEVELOPMENT IN ILLINOIS IN 1937 Table 1. — (Continued) Depth, Oil Production J^foflinda of T?nA r\f Pressure, Lb . per Character of Oil, Approx. Average in Feet 1937 3q. In." Average during 1937 Character of Gas, Approx. Average uurmg Number of Average at Gravity A.P.I, at iy3/ Bottoms To Top — Wells End of 60° F.2« of Pro- of Pro- Initial ^ J5 a 3 ductive ductive o S* Wells Zone bo c bfl a •si a o -2£ 1936 1937 a J I T3 a ■- V .3° .I* 0} 3 C U- EL, 8 8 c — 03 S 1 bo ^ o. S3 1^ « 2 3 a & 1 215 159 13 X X X X X X V y 2 367 200± X X 38.4 28.3 34.0 V M X X 3 376 281 V X X X y V 30.0 V M X X 4 446 334 y X X X y y 33.5 y M X X 5 2,568 2,265 y X X X y V 37.0 y M X X 6 914 A4 X X X (36.9) 27.4 33.0 V M X X 7 465 367 V X X X V V 34.0 y M X X 8 562 478 y X X X y y (33.6) y M X X 9 590 556 y X X X y " y (25.7) y M X X 10 680 588 44 X X X 33.9 30.0 (30.3) y M X X 11 472 27 X X X 37.2 27.2 29.2 y M X X 12 358 263 y X X X V V (31.9) V M X X 13 426 309 y X X X y y (30.1) y M X X 14 505 444 y X X X X y (33.6) y M X X 15 126 A2 X X X 37.5 30.2 36.8 y M X X 16 411 255 y X X X y y V y y X X 17 511 449 y X X X V y y y u X X 18 506 477 y X X X y y y y y X X 19 1,418 1,340 y X X X y V (38.9) y M X X 20 1,596 1,553 V X X X y V V y M X X 21 2,830 2,708 1 X X X y y (39.6) y M X X 22 448 X X X 36.2 27.2 31.0 y M X X 23 486 416 V X X X y V y y V X X 24 451 314 y X X X y y y V y X X 25 508 465 V X X X y y y y y X X 26 554 534 y X X X V y y y y X X 27 486 X X X 35.1 28.5 32.2 V M X X 28 549 392 y X X X y V V y V X X 29 518 453 y X X X y y y y y X X 30 570 489 y X X X V y y y y X X 31 618 598 V X X X V y 28.5 y M X X 32 403 AG5 X X X 35.6 27.3 33.7 V M X X 33 726 561 y X X X y V (32.4) y M X X 34 907 817 y X X X y y V y y X X 35 920 886 V X X X y y (37.0) y M X X 36 3,278 23 X X X 39.6 25.8 33.0 y 37 5,235 29 425± y y 36.8 25.1 33.0 y M 960 2.5 38 822 508 V X X X y y y y V X X 39 960 900 y 30 X X X 36.8 25.1 32.8 y M 960 2.5 40 1,416 1,337 V X X X V y y y V X X 41 975 940 180 G2 X X X 35.0 24.3 30.1 y y X X 42 1,015 995 75 AG1 X X X V y y V y X X 43 1,025 1,000 222 X X X V V y y y X X 44 930 912 65 X X X 30.4 22.6 29.5 y y X X 45 945 935 154 X X X 26.6 20.1 22.5 y y X X 46 950 930 480 A7 X X X 34.1 26.5 31.8 y y X X 47 6,406 si 425± X X 38.6 18.5 32.3 V M 960 2.5 48 3,304 Al 650± X X 39.3 26.7 32.9 V U y 2.4 49 1,000 800 y X X X y y y y y X X 50 1,265 1,250 y X X X V y y y y X X 51 1,345 1,330 V X X X y y y y y X X 24 Numbers in this column indicate numbers of injection wells. ^Pressures in the southeastern Illinois oil fields are estimated bottom hole pressures reported in previous Survey publications. 28 All gravities given prior to 1936 (except those in parentheses) were from data for the year 1925 furnished by the Illinois Pipe Line Co. Gravities in parentheses are for particular samples; see Illinois State Geol. Survey Bull. 54, Table 3. The values have been converted from Baume to A.P.I, gravities. »G1, A13. 28 Gl, AG5, A19. a Gl', AG20.A46. M G17.AG20, A46, Wl. 3>G19 AG21, A53, Wl. ALFRED H. BELL graph surveys, 17 on geologic surveys, 3 on a combination of seismograph and geologic data. Of the 80 wells located without scientific means 8 (10 per cent) were producers. All of these eight producers were within 1 to 4 miles of previously discovered production in the Clay City and Table 1. — (Continued) Producing Rock Deepest Zone Tested to End of 1937 Name Age/ -1 Name J a 3 M § 2& 3- •a to 1 J3 1 TO 9^0 c-22 - 25 M 5 o a, !-« !*« 1 Unnamed Pen s Por X ML Pen 715 2 | See below D 103 Trenton 2,918 3 Shallow gas sand Pen s Por 36 D X 4 Westfield lime MisL L Cav X D X St. Peter 3,009 5 Trenton (Ord) Ord L Por X D X 6 See below D 28 Dev. limestone 2,010 7 First Siggins sand Pen s Por X D X 8 ! Second and third Siggins sand Pen S Por X D X 9 ! Lower Siggins sand Pen s Por X D X 10 York sand Pen s Por X AM 2 960 11 See below AM 20 MisL 808 12 Upper gas sand Pen s Por X AM 5 13 Lower gas sand Pen s Por X AM 12 14 Casey sand Pen s Por X AM 20 15 See below D 5 St. Peter 3,411 16 Shallow sands Pen s Por X D 1 17 Casey sand Pen s Por X D 5 18 Martinsville sand MisL L Por X D 1 19 Carper MisL s Por X D 1 _'n "Niagaran" Dev L Por X D 3 21 Trenton Ord L Por X D 1 22 See below AM 16 Mis 965 23 Claypool sand Pen S Por X AM 12 24 Shallow sands Pen S Por X AM 4 25 Casey sand Pen s Por X AM 12 26 Upper Partlow Pen s Por X AM 16 27 See below AM 29 Mis 1,160 2s Claypool sand Pen s Por X AM 3 29 Casey sand Pen s Por X AM 11 3D Upper Partlow Pen s Por X AM 29 31 Lower Partlow Pen s Por X AM 10 32 See below AM 15 MisL 1,471 33 "500 Ft." sand Pen s Por X AM 3 34 "800 Ft." sand Pen s Por X AM 3 3.5 "900 Ft." sand MisU s Por X AM 12 36 33± 216 37 See below 34 202 Trenton (Ord) 4,620 38 Shallow sand Pen s Por X ML i 39 ! Robinson sand Pen s Por 25+ ML 171 Trenton (Ord) 4,620 40 ' Oblong Mis SorL Por X A, ML 23 Mis 1,479 41 Robinson sand 55 Pen s Por X ML 5 MisL 2,056 42 Robinson sand Pen S Por X ML 10 Mis 2,279 43 | Robinson sand Pen S Por X ML 11 Pen? 1,127 44 Robinson sand Pen S Por X ML 6 Pen 1,041 45 ' Robinson (Flat Rock) Pen s Por X ML 9 Pen 1,032 46 Robinson sand Pen s Por X ML 12 MisL 1,731 47 Pen, Mis S Por ML 257 Trenton (Ord) 4,620 48 See below A 84 St. Peter 5,190 49 Bridgeport sand Pen S Por 40 A 19 50 Buchanan Pen s Por 15 A 3 51 "Gas" sand MisU S Por 15 A 5 3 * The Salvage Oil and Gas Co.— W. S. McGrillis No. 3, sec. 25, T. 8 N., R. 13 W., is producing in the " McClosky sand' at a depth of from 1409 to 1415 ft. 35 The West Union Oil and Gas Co. — Ducommon No. 1, sec. 28, T. 6 N., R. 12 W., is producing in the " McClosky sand' from 1506 to 1528 ft. OIL AND GAS DEVELOPMENT IN ILLINOIS IN 1937 Table 1. — (Continued) Field, County St. FraDcisville, Lawrence Lawrence County Division 6 Allendale, Wabash . Total Southeastern Illinois field 6 Colmar-Plymouth, Hancock, McDonough Pike County Gas, Pike Jacksonville Gas, Morgan Carlinville, Macoupin Spanish Needle Creek, Macoupin Gillespie-Wyen, Macoupin Gillespie-Benld Gas, Macoupin Staunton Gas, Macoupin Litchfield, Montgomery Collinsville, Madison Ayers Gas, Bond Greenville Gas, Bond Carlyle, Clinton Frogtown, Clinton Sandoval, Marion Centralis, Marion Wamac, Clinton, Marion, Washington. . . Dupo, St. Clair Waterloo, Monroe Sparta Gas, Randolph Ava-Campbell Hill, Jackson Bartelso, Clinton Patoka, Marion Clay City, Clay, Wayne Cisne, Wayne Noble, Richland Rinard, Wayne Beecher City, Fayette Beecher City, 20 Fayette Olney, Richland Centralia (New), Clinton Decatur, Macon Russell ville Gas, Lawrence Total Illinois 22 Age, Years to End of 1937 V 25 24 32' 27» 28» 22'» 22 14" 2112 58" 28" 15 27' 6 26 1918 28 27 16 9 1717 20'8 2019 2 1 1 1 1 1 1 1 1 1 l J i 1 Area Proved, Acres Oil 15,960 4,020 6,950 420 24,570 1,680 91,855 2,450 30 30 40 100 40 915 300 770 175 250 670 125 65 70 93 310 842 30 470 10 10 10 10 20 10 99,720 Gas 220 200 1,550 3,970 8,960 1,290 50 80 80 400 325 160 100 370 10 15,785 Total 16,180 4,220 6,950 420 26,120 1,680 95,825 2,450 8,960 1,320 40 80 400 100 40 325 160 915 300 770 175 250 670 125 165 440 93 310 842 30 470 10 10 10 10 20 10 10 115,500 Total Oil Production, Bbl. To End of 1937 221,381,000± 4,272,000+ 419,615,400+ 2,287,800 2,100 22,000 715 3,317,200+ x 2,630,800± x 372,750+ 910,775 166,000 25,000 91,700+ 425,000 1,556,260 20,500+ 947,340 2,100± v 100± 600± 5,000+ 600± During 1936 432,921,000" 4,445,0O0 2 3 1, 995,000 ± 133,000± 4,138,700 153,000 4,758 28,200± 30,160± v 23,200± 53,100 40,700+ 6 Total of lines 48 and 55. 6 Total of lines 36, 47, 56, 57. ' Abandoned 1930. 8 Abandoned 1937. » Abandoned 1925+ . i» Abandoned 1934. ii Abandoned 1935. ■ 2 Abandoned 1919. » Abandoned 1904. » Abandoned 1921. » Abandoned 1923. ■ 6 Abandoned 1933. " Abandoned 1930. is Abandoned 1900. i» Abandoned 1934. 20 The discovery well was plugged back to the Cypress sand in February 1938. »« Wells drilled in 1922 and 1924; first production in 1937. 22 Total of lines 58 to 91. *> The total oil production is the figure furnished by the U. S. Bureau of Mines and is not the exact total of the figures given in the table, which were obtained from other sources. ALFRED H. BELL 9 Noble fields. Of the 47 wildcat wells located by scientific means, 11 (23 per cent) were producers. Natural Gas There are now two gas fields in Illinois from which gas is marketed off the producing leases, the Ayers field, Bond County, now 15 years old, and the Russellville field, Lawrence County, discovered in 1937. The Ayers field furnishes gas for the town of Greenville. One producing well was drilled in this field in 1937 (see Table 1, line 69). In the Russell- ville field gas is produced in two wells from sandstones in the Pennsyl- vanian at depths of 288 and 619 ft., respectively. The gas is transported Table 1. — (Continued) Total Oil Production, Bbl. Total Gas Production, Millions Cu. Ft. Number of Oil and/or Gas Wells Daily _>. -a During 1937 At End of 1937 During 1937 Average during To End of 1937 o J, Qf- o £•5 O Nov. 1937 a bfl a as -a T3 "ft T3 O -a •I"a So .11 go bo >> 1° bO - a — i a I 3"° a o O £ 3 S c So rt o 52 X z X X X X 3,017 y •V V y y V 93 X X X X X X 684 y y V y V y 54 X X X X X X 957 5 y V V y V 55 X X X X X X 54 y y 45 V V 45 .V. 2,038.046+ 5,584+ X V y y 9,174 5 18 59 3,277 y V 3,277 57 139,291 + 381± X y V y 420 9 6 322 V 322 58 4,278,892+ 11,578± X V y y 19,035 30 67 281 13,283 V 1 13,284 59 147,809 398 475 12 71 206 206 60 i 68 61 i 53 y y 62 X 8 63 14.4 7 V 64 400 22 12 65 135.8 4 66 1,050 18 67 X 17 68 5 69 143,800 37,047 26,353 y 18 1 2 9 9 70 990 4 71 28,200+ 77+ 165 1 3 30 77 77 72 12 73 23,800± 70+ 122 9 y 36 36 74 y y 22 y 3 3 75 19,750+ 55+ 103 1 V 45 45 76 33,175 106 237 20 25 25 77 23 78 X 20 79 X 35 BO 51,000+ 140 21 12 1 20 20 81 425,000 2,464 93 93 93 93 S2 1,556,260 7,987 80 80 80 80 B3 20,500+ 50 3 3 1 2 2 84 947,340 10,033 47 47 47 47 8G 2,100+ 36 1 1 0. 1 St. V 1 1 1 -7 100+ O 1 1 1 88 600± 1 1 1 n 5,000+ 2 2 2 2 N 600± 32 2 2 2 2 91 2,288 2,288 2 2 2 2 n 7,426,000" 33,026 X V V y 20,727 289 104 394 13,925 V 12 13,937 10 OIL AND GAS DEVELOPMENT IN ILLINOIS IN 1937 east across the state line by a new 3-in. pipe line of the Kentucky Natural Gas Co. to Oaktown, Indiana. In the new oil fields some gas is produced with the oil, and it is used for power on the leases. Few data are available on the amount of gas produced. The largest initial production reported was 2% million cu. ft. (estimated) for Ohio Oil Company's Arbuthnot No. 1, the discovery well of the Noble field. The Wiser Oil Company's Damon Smith No. 1, which opened a northern extension of the Clay City field, had an initial daily production Table 1. — {Continued) Depth, Oil Production Pressure, Lb . per Character of Oil, Approx. Average in Feet 1931 Sq. In.« Average during 1937 Character of Gas, Approx. Number of Average at Gravity A.P.I, at Average uuuuj 1937 Bottoms To Top Wells End of 60° F.28 of Pro- of Pro- Initial .a ■ 1 1 ductive ductive "£ S Wells Zone | bo .a •s.s .2 S 1936 1937 a a 3 ^3 1> J3 ^ i~ a -ao 4? -I °3 OS 3 5 o 11 ■3& S3 s o. ■_ 1£ I m 5 = 5° "3 QJ 52 1,430 1,400 V 600+ X X y y y y V X X 53 1,580 1,560 V 650 X X y y y y V X X 54 1,710 1,700 V X X X y y V V y X X 55 1,865 1,843 45 600 X X 37.3 37.3 37.3 y y X X 56 3,277 Al X X X 57 1,460 1,425 322 W6, Al X X X 35.9 24.1 35.1 y V X X 58 13,283 32 39.3 18.5 33.1 y 2.4 59 468 447 206 A68 X X X y y y y y 60 275 265 X X X X X 61 335 330 X X X X X X X X 850 y 62 398 380 135 X X X X 27.7 X y X X 63 405 305 y y y y y 64 670 650 X X X X X 30 X y 65 555 542 155 X X 788 y 66 491 461 145 X X X X 67 674 664 X X X X X 21.7 X V X X 68 1,400 1,305 X X X X X X X X X X 69 945 940 335 310 310 1,050 7(1 993 927 X X X 71 1,055 1,035 77 A28 X X X 37.0 34.2 35.2 y y X X 72 957 950 X X X y y 31.9 V y X X 73 1,560 1,540 II 36 X X X 35.1 32.7 34.5 y y 74 1,150 1,130 3 X X X 35.0 31.0 32.0 X X 75 760 720 45 W21 X X X 30.8 29.3 30.2 V p 76 651 601 25 X X X y y 32.7 y y 77 460 410 X X X 30.1 29.5 30.0 X X 7S 857 850 X X X X X X X X X X 79 798 780 X X X X X X X X X X 80 1,010 986 20 X X X y V 32.0 V V X X si 1.440 1,424 93 X X X 39.8 39.3 39.5 V V X X 82 3,002 2,968 4 76 250 X y 38.8 38.0 38.5 V V X X 83 3.026 2,990 II 2 X X V V 38.5 V y X X 84 2.991 2,961 24 23 450 250+ y y 38.5 y y X X S.) 3,154 3.144 1 X X y y 38.5 y y X X 86 1,503 1,497 1 275 X y y 36.0 y V X X 87 3,100 3,070 1 X X V y 37.0 y y X X 88 3,083 3,065 1 X X y y 38.5 y y X X 89 1,370 1,342 2 X X X y y 39 V y X X 90 2,076 2.020 2 X X y V 39.5 y y X X 91 f 310 \ 622 288 140 X X X X X l\ 947 V 619 II 261 X X X X X 92 28 13,897 33 32 G20, AG26, A74, W7. »G20, AG26, A170. W28. ALFRED H. BELL 11 of 200,000 cu. ft. of gas and 1400 bbl. of oil, or a gas-oil ratio of 143 cu. ft. per barrel. The average gas-oil ratio in the Clay City and Noble fields probably does not exceed 200 or 300 cu. ft. per barrel. Gas discoveries in which the gas is not used outside of the producing leases were made near Longview in Champaign County and near Marissa in St. Clair County (Table 2, line 101). The former well was drilled to the Devonian and plugged back. It was not completed until 1938. Table 1- —(Continued) Producing Rock Deepest Zone Tested to End of 1937 Name Agef s"t£ Dry and/ y Holes to 7 Name M » H .. ^ I- CO "3 "72 55 0J o c3 ">> .2 be E" 1 fe 3 a Z ^ » 03 ■*> > 3 9 ^ c ao o o o Oh £* 55 |SH qM 52 Kirkwood MisU s Por 30 A 10 53 Tracey MisU S Por 20 A 11 54 McClosky MisL L Por 10 A 24 55 Kirkwood MisU S Por 22 ML Mis 1,900 56 84 St. Peter 5,190 57 Biebl sand Pen S Por 20 AM 49 MisL 2,228 58 610 59 Hoing sand Dev S Por 21 A 8 St. Peter 720 60 "Niagaran" Sil L Por 10 A St. Peter 893 61 Gas sand Pen, Mis S, SL Por 5 ML 8 Trenton (Ord) 1,390 62 Unnamed Pen S Por X A Pen 410 63 Unnamed Pen S Por X D 1 Pen 495 64 Unnamed Pen S Por X T 14 Trenton (Ord) 2,560 65 Unnamed Pen s Por X A Pen 575 66 Unnamed Pen S Por X A Trenton (Ord) 2,371 67 Unnamed Pen S Por X D Pen 681 68 Trenton Ord L Por 20 ML Trenton (Ord) 1,500 69 Lindley (2d) MisU s Por 5 A 2 MisL 1,150 70 Lindley (1st, 2d) MisU S Por X A Mis 1,065 71 Carlyle MisU s Por 20 A 17 Sil 2,620 72 Carlyle MisU S Por 7 D Carlyle y 962+ 73 Benoist MisU s Por 20+ D 7 Mis 1,732 74 Dykstra, Wilson, Benoist Pen, MisU s Por 20 D,ML 6 MisL 1,779 75 Petro Pen s Por 20 D Benoist 1,484 76 Trenton Ord L Por, Cav 50 A Trenton (Ord) 819 77 Trenton Ord L Por 50 A 19 Trenton (Ord) 845 78 Sparta gas sand MisU s Por 7 D 5 MisU 985 79 Unnamed MisU s Por 18 A V Dev 2,530 80 Carlyle MisU s Por 20 D 3 MisU 1,118 81 Benoist 3 ' MisU s Por 16 A 18 MisL 1,618 82 Ste. Genevieve 3 ' MisL L Por 8.7 A 8 MisL 3,197 83 Ste. Genevieve MisL S, L Por 8 A? 1 MisL 3,144 84 Ste. Genevieve MisL L Por 9.7 A 5 MisL 3,098 85 Ste. Genevieve MisL L Por 5 A MisL 3,154 86 Benoist MisU s Por 6 Dev 3,170 87 Niagaran Dev L Por A? Dev 3,170 88 Ste. Genevieve MisL L Por 7 A MisL 3,083 89 Benoist MisU s Por 26 A MisU 1,384 90 Niagaran Dev L Por 30 N Trenton (Ord) 2,800 91 \ Pennsylvanian sand ( Pennsylvanian sand Pen Pen S s Por Por 22 ) 3 } A 3 MisL 2,012 92 699+ 31 The Adams Oil and Gas Companies Sam Pugh No. 1, sec. 29, T. 4 N., R. 1 E., is producing from the Ste. Genevieve limestone at a depth of 1562 ft. 37 The Pure Oil Company's Weiler No. 1, sec. 33, T. 3 N., R. 8 E„ the discovery well in the Clay City field, produced from the Cypress sandstone until October 1937, when it was drilled deeper to the McClosky sand and the Cypress sandstone was cased off. 12 OIL AND GAS DEVELOPMENT IN ILLINOIS IN 1937 Table 2. — Summary of Drilling Operations in Illinois Important Wildcats Drilled in 1937 County Bond Bond..... Christian. Christian . Christian . Clay Clay Clay Clay Clay Clay Clay Clay Clay Clay Clay Clay Clay Clinton. . . Clinton. . . Clinton. . . Clinton. . . Clinton. . . Clinton. . . Clinton.. . Clinton. . . Clinton. . . Clinton. . . Clinton . . . Clinton . . . Clinton. . . DeKalb. . . DeKalb... Edgar .... Edwards . . Effingham. Effingham. Effingham. Effingham. Fayette. .. Fayette... Fayette. . . Fayette Fayette... Fayette... Fayette... Fayette... Fayette... Fayette... Fayette... Location Sec. Sur- vey Twp. Lat. 5N 6N 12 N 1SN 12 N 3 N 3N 3N 2N 2N 3N 3N 3N 3N 3N 4N 3N 4N 2N IN 2N 1 N 3N 1 N 1 N 2N 1 N 3N 1 N 3N 2N 41 N 42 N 12 N 2S 7N 7N 6N 8N 5 N 5N 4 N 7N 4 N 4 N 7N 8N 8N 6N 6N Rge. Long. 3 W 5 W 2 W 2 W 2 W 8 E 8E 8E 6E 8E 8E 8E 6E 7E 8E 8E 8E 8E 3 W 2 W 3W 2 W 1 W 2 W 3 W 3W 2W 1 w 1 w 1 w 4 W SE 3E 13 W 10 E 6E 6E 5E 7E 3E 3E 1 W 1 W 1 w 1 w 2E 3E 3E IW IE 1,087 3,101 1,122 1,964 3,112 2,613 2,960 2,987 3,163 3,057 3,067 3,036 3,112 3,002 3,183 3,234 3,075 3,072 1,051 1,365 1,206 1,361 1,504 1,567 1,429 1,515 1,521 1,454 1,384 1,724 1,235 4,348 2,970 500 4,932 2,100 3,150 4,117 2,660 172 2,292 1,498 2.000 1,601 1,609 2,163 3,100 1,503 3,155 1.733 Surface Formation Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Deepest Horizon Tested Chester St. Peter Lower Missis- sippian St. Peter "Trenton" Cypress Ste. Genevieve Ste. Genevieve Ste. Genevieve Ste. Genevieve Ste. Genevieve Ste. Genevieve Ste. Genevieve Ste. Genevieve Ste. Genevieve St. Louis Ste. Genevieve Ste. Genevieve Cypress Chester Paint Creek Chester Bethel Ste. Genevieve Ste. Genevieve Lower Missis- sippian Lower Missis- sippian Bethel Bethel Ste. Genevieve Lower Missis- sippian Pre-Cambrian Cambrian Pennsylvanian Lower Missis- sippiac Chester Lower Missis- sippian "Niagaran" Ste. Genevieve Pennsylvanian Ste. Genevieve Chester Lower Missis- sippian Ste. Genevieve Ste. Genevieve Ste. Genevieve "Niagaran" Benoist Silurian Ste. Genevieve Drilled by Hempen and Burgess Huber Drilling Corp. Nokomis Oil Co. Parshall-Graham Oil Co, Roger Bros, et al. Pure Oil Co. Pure Oil Co. Wiser Oil Co. Benedum Trees Co. Gordon Oil Co. Wicklund Development Co. Elmer Hupp etal. Leonard Drilling Co. Jack Shaffer et al. Wicklund Development Co. Gulf Oil Corp. C. H. C. Oil Co. Bonnie Oil Co. J. E. Newton et al. Carl Willi et al. W. C. McBride Inc. Carl Willi et al. Patoka Pet. Corp. Adams Oil and Gas Willis et al. W.C. McBride Inc. Wise and Goldschmidt Adama Oil and Gas Adams Oil and Gas McClanahan Oil W. C. MoBride Inc. Paul Schulte et al. Barton et al. Hassett et al. Leach Brothers W. H. Hazlett et al. Faurot, Mitchell and Hazlett Kingwood and Carter Oil Carter Oil O. A. Davis et al. Rush and Milleken Linville, Beaton and Ryer Universal Service Drill- ing Company C. B. Tull et al. Belcher et al. Oil Development Co. Carter Oil Co. Carter Oil Co. Benedum Trees Hausmann et al Oil and Gas Initial Production per Day Oil, U.S. Bbl. Gas, Mil- lions of Cu. Ft. 40' 2,642 1,400 1,226 156 57 2 2003 1 Cut 8 per cent with salt water. 2 In 17 hours. 3 Estimated. ALFRED H. BELL Table 2. — (Continued) 13 Important Wildcats Drilled in 1937 Location County Sec. Sur- vey Greene . . . Hamilton . Hamilton . Jasper Jasper Jasper Kane Lawrence . Lawrence . Lawrence . Lawrence . Lawrence . Lawrence . Lawrence . Lawrence . Madison . . Marion. . . Marion . . . Marion . . . Marion. . . Marion . . . Marion . . . Marion. . . Marion . . . Marion. . . Marion. . . Marion. .. Marion. . . Marion. . . Marion. . . Marion . . . Marion Marion Mason Perry Pike Randolph.. . Richland Richland Richland Richland Richland Richland Richland Richland Richland Richland Richland Richland Rock Island . St. Clair. . . . St. Clair. . . . Shelby Wabash Wabash Wabash Twp. Lat. ION 3S 3 W 7N 8N 7N 40 N 5N 5N 5N 5N 5N 5N 5N 3N 5N 4N 4N 4N 4N 4N 4N 3N 4N 4N 3N 3N 3N 3N 4N 4N 4N 4N 23 N 6S 5S 4S 3N 4N 3N 3N 3N 4N 3N 2N 3N 3N 3N 5N 20 N 3S IS ION 1 N 1 N 1 N Rge. Long. 13 W 7E 5E 14 W 8E 8E 8E 10W 10W 10W 10W 10W 10W 10W 10W 8 W IE IE IE IE IE IE 2E 3E IE 2E IE 2E IE IE IE IE IE 7W 1 W 3 W 5 W 9E 9E 8E 10 E 9 E 9E 8E 10 E 9E 14 W 10 E 9E 2E 6W 7W 6E 12 W 12 W 11 W Surface Formation 3,452 3,324 1,104 3,504 3,205 670 622 660 2,012 310 830 657 719 3,302 1,987 1,418 1,679 1,612 1,425 1,707 1,616 2,515 3,671 1,725 2,439 1,575 2,500 1,706 1,530 1,717 1,477 1,482 1,000 5,257 750 1,003 2,990 3,010 3,099 3,252 2,961 3,007 3,043 3,235 3,046 3,248 3,083 3,200 : 1,353 2,013 2,384 Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Pleistocene Deepest Horizon Tested Pleistocene Pleistocene Pleistocene Pleistocene 1,480! Pleistocene 1,610 Pleistocene 1,510 Pleistocene "Trenton" Ste. Genevieve Chester Pennsylvanian Ste. Genevieve St. Louis St. Peter Pennsylvanian Pennsylvanian Salem Pennsylvanian Pennsylvanian Pennsylvanian Pennsylvanian "Niagaran" "Trenton" Bethel Ste. Genevieve Ste. Genevieve Bethel Chester Ste. Genevieve Lower Missis- sippian "Niagaran" Ste. Genevieve Ste. Genevieve Chester Lower Missis- sippian Ste. Genevieve Chester Ste. Genevieve Bethel Bethel " Niagaran" St. Peter "Trenton" Chester Ste. Genevieve Ste. Genevieve Ste. Genevieve Ste. Genevieve Ste. Genevieve Ste. Genevieve Ste. Genevieve Ste. Genevieve Ste. Genevieve Ste. Genevieve Ste. Genevieve Ste. Genevieve Ordovician Chester "Trenton" Ste. Genevieve Pennsylvanian Chester Pennsylvanian Drilled by Witt, Godey, and Robey J. G. Buell A. H. Carpenter et al. William Goodwin H. H. Weinert W. R. Anderson et al. Edward Duvall et al. Warren Hastings et al. Warren Hastings et al. Warren Hastings et al. Warren Hastings et al. Warren Hastings et al. Warren Hastings et al. Warren Hastings et al. Strauss et al. T. C. Hayelka Adams Oil and Gas Wiser Oil Adams Oil and Gas Illinois Nat. Oil and Gas Ray Brown et al. Adams Oil and Gas Texas Co. Carter Oil Ralph Ayers et al. Helmrich and "Payne Inc. Roy Benoist Target Drilling Co. Shell Pet. Corp. Palmer et al. J. Alexander et al. J. Alexander et al. J. Alexander et at. Werner Brothers Howard Forester Super Oil Co. Tom Cain et al. Ohio Oil Co. Mammoth Oil and Re- fining Co. Keith and MacMahon Neely et al. Southern HI. Pet. Co. C. L. McMahon Robinson and Gordon Wiser Oil Co. Mammoth Oil and Re- fining Co. Hollingsworth Frost et al. Kingwood and Mc- Mahon Rockdale Oil and Gas W. A. Holt A. J. Colgan et al. J. A. English et al. Patton Oil Co. Coastal Producing Co. Mahutska Oil Initial Production per Day Cil, U.S. Bbl. •V." 29 300 Gas, Mil- lions of Cu. Ft. 0.824 0.250 1,996 1,501 145 92 250 50 2(1 * Natural flow through !4-in. choke. 6 Small gas production, used for heating one building. 14 OIL AND GAS DEVELOPMENT IN ILLINOIS IN 1937 Acidizing in the New Basin Fields Almost all of the wells drilled in the Clay City, Cisne and Noble fields have been acidized. Wells having a small thickness of oil saturation or saturation with low permeability are treated before the well is put on production. Wells with high initial productions, which were not acidized at the time of completion, have been acidized when the daily production declined considerably. In almost every well treated production was increased to some extent, varying from slight increases up to fourfold. The wells are treated with 1000 to 4000 gal. of acid. Improved Recovery Methods in the Old Fields The slow adoption of improved recovery methods in the old fields is due partly no doubt to the intense interest and activity in the new fields of the state. Table 2. — (Continued) Important Wildcats Drilled in 1937 Initial Location Production Deepest per Day County Sec. Twp. Rge. b, J3 Formation Horizon Tested Drilled by Oil, U.S. Bbl. Gas, Mil- o. Q lions of Cu. Ft. Sur- vey Lat. Long. B C5 107 Wabash 28 1 N 13 W 1,863 Pleistocene Pennsylvanian Joe Young et al. Dry 108 Wabash 7 1 N 11 W 2,225 Pleistocene Ste. Genevieve Adams Corners Oil Co. Drv 109 Wabash 17 IN 12 W 1,560 Pleistocene Pennsylvanian George Randolph et al. Dry 110 Wabash 18 IN 12 W 1,644 Pleistocene Chester Cecil Keneipp Drv 111 Washington . 22 IS 4 W 1,002 Pleistocene Chester Sunflower Oil Co. Dry 112 Washington. 22 IS 5 W 990 Pleistocene Bethel Sunflower Oil Co. Drv 113 Washington . 36 IN 2 W 1,666 Pleistocene Ste. Genevieve Milliken et al. Drv 114 Wayne 26 IN 7E 2,987 Pleistocene Ste. Genevieve Pure Oil Co. 100 115 Wayne 26 2N 8E 3,066 Pleistocene Ste. Genevieve Myers and Fitzpatrick 5« llfi Wayne 33 2N 7E 3,154 Pleistocene Ste. Genevieve Benedum and Trees 50 117 Wayne 30 2N 8E 3,040 Pleistocene Ste. Genevieve Andy Bruner Drv 118 Wayne 11 IS 7E 3,412 Pleistocene Ste. Genevieve Mammoth Oil and Re- fining Co. Duncan Oil Dry 119 Wayne 27 2N 8E 3,040 Pleistocene Ste. Genevieve 583 120 Wayne 21 2N 5E 3,313 Pleistocene St. Louis Benedum and Trees Dry 121 Wayne 12 1 N 6E 3,314 Pleistocene Ste. Genevieve Benedum and Trees Drv 122 Wayne 28 2N 7E 3,085 Pleistocene Ste. Genevieve Benedum and Trees Dry 123 Wayne 31 28 6E 3,042 Pleistocene Ste. Genevieve F. R. Washburn Pet. Corp. Benedum and Trees Dry 124 Wayne 33 2N 7E 3,280 Pleistocene Ste. Genevieve Dry 125 Wayne 4 1 N 7E 3,216 Pleistocene Ste. Genevieve Midwest Development Co. Johnson and Cozart Dry 12fi White 5 4S 8E 3.405 Pleistocene Ste. Genevieve Drv 127 Will 25 35 N 12 E 2,063 Pleistocene Cambrian Nelson et al. Dry In Proven Fields Wildcats Number of wells drilling Dec. 31, 1937 Number of oil wells completed during 1937 Number of gas wells completed during 1937 Number of dry holes completed during 1937 6 Per hour. 20 262 1 56 14 22 2 104 ALFRED H. BELL 15 Table 3. -Summary of Drilling and Initial Production in Illinois for 1937 Number of Footage Drilled in 1937 County Bond Christian . . . Clark Clay Clinton Coles Crawford . DeKalb Edgar Edwards .... Effingham . . . Fayette Greene Hamilton . . . Hancock .... Jasper Kane Lawrence . . . McDonough. Madison. . . . Marion Mason Perry Pike Randolph . . . Richland .... Rock Island. St. Clair... Shelby Wabash Washington . Wayne White Will Total for State . Wells Drilled 1937 Total Completed 5 3 7« 91 29 1 20' 2 1 1 4 11 1 2 2 3 1 13 15 1 122 1 1 1 1 60 1 2 1 19 3 20 1 1 447 Total Producing Oil 3 75 15 13 2 5 12 93 48 9 9 284 Gas Total Initial Production Oil" 9 39,710^ 1,165" 160 300* 118 50 6,499'' 27,293' 340 2,855* 78,499 Gas» 1 . 000* 1.074 Total 2.074 7,102 7,237 3,484 268,963 34,979 355 21,764 7,318 500 4,932 12,027 20,826 800 6,776 1,184 7,813 670 18,352 6,607 1,987 169,632 1,000 5,257 750 1,003 180,788 1,353 2,813 2,384 29,699 3,658 63,160 3,405 3,095 902,795 Producing Wells 951 2,387 219,314 14,559 14,956 4,603 10,178 5,332 124,073 143,651 13,381 27,756 581,141 ° Barrels. 6 Millions of cubic feet. c One pressure well. d Two wells producing gas, which is used on the lease. ' Estimated. ' Clay City field. » Bartelso, 886 bbl.; Centralia (new), 276 bbl.; Carlyle field, 3 bbl. * Beecher City field. 1 Patoka field. »' Noble field, 27,243 bbl.; Olney field, 50 bbl. * Cisne field, 222 bbl.; S.E. Clay City field, 2133 bbl.; Rinard field, 500 bbl.; total initial production for new fields, 77,819 bbl. 16 OIL AND GAS DEVELOPMENT IN ILLINOIS IN 1937 Acidizing. — In Lawrence County, out of 15 wells that were acid- treated, eight yielded increases in production, one was a new well with initial daily production after acidizing of 40 bbl., and six gave no results in increased production. The total daily production of the eight wells before acid treatment was 16 bbl.; after treatment, 110 bbl., a sixfold increase. The usual charge was 1000 gal. of acid. The producing strata treated in all of these wells was the McClosky oolitic limestone (Ste. Genevieve formation, lower Mississippian series). In the Dupo field, St. Clair County, one well was acid-treated and its production increased from 5 to 12 bbl. per day. The producing stratum is the Kimmswick (Trenton) limestone in the Ordovician. Air Pressuring.- — The air and gas repressuring plants in operation in 1936 continued during 1937 and four new air repressuring operations were begun with a total of 36 input wells. Water-flooding.— Little new water-flooding was undertaken during 1937. Two of the uncontrolled water-flooding operations in the Allen- dale field, Wabash County, reported substantial increases in production. The water-flooding operation in the Carlyle field, Clinton County, begun in 1934, has been stopped. Petroleum Conference The fifth annual petroleum conference of Illinois-Indiana, held at Robinson, May 29, 1937, was attended by over 300 oil men, including representatives of all the principal oil-producing states. The program consisted of discussion of exploratory methods, development and operat- ing problems. The fifth annual mineral industries conference at Urbana, Table 4.- -N umber of Wells in the New Fields, with Acreage December 31, 1937 Field Patoka Clay City Rinard Noble Cisne Centralia (new) . Beecher City. . . . Olney Russellville (gas) Total Producing Wells Dry Holes" Drilling Wells Rigs Standing Rigging Up Loca- tions 93 18 4 3 1 80 8 3 7 4 4 1 47 5 12 18 13 2 b 1 2 2 1 2 3 230 35 19 28 18 4 Acres 310 842 10 470 30 20 20 10 10 a Within yi mile of production. 6 One producing well was abandoned. ALFRED H. BELL 17 2 O o S o H ►J B H'^j CM © CM O O CD — m c> t^ o co c +j -3 IC Tj« Tf O © OS © -t* o >o o >o >o '3-oM co — — c OS lO H KJ CM -H •-< o Cm" i— i ^* £ 00 > e .2 o <1> >> >> CJ ^» ^ ^ ^ ^ ^» i = » ^d M a -^ ■* ^ J«! 2 ^ cj ■** ;£ CO CO S3 2 2 co co o3 +j +j co o fe • 2 £ .2 _2 o o be co co o fe 2 S.O O o 3 .s '§ 'g o £ £ 55 § g " '3 3 T3 O 55 >> ,£ « CU CJ CJ J3 -h 00 © CO CM 00 CM o ^ on oo «j £ Is CJ o »o lO 00 O! N lO <* S Ol ■* CD CO_ CD_ OS_ o_ CO 00_O> OS_ rM O ■* CO 0_ Q i-T in" cm" eo cm" cm" cm" CM" CO" CO" ^h~ ^h" CO" "Scg 00 CO O CO t- O OS i-h ■* O CO -c o O 00 00 ■* CD Ol O OS OS o OIH h lOMO ^Q rt N N CO CM CM CO CM CO CO i-l i-i CO SH OJ .a . « H W W H WWW HHHB^o rH X 00 00 t^ OS OS Ol N CO M H H u a; rt 55 55 55 55 55 55 55 5555 £ 55 5? 55 o >(U Tji CO CO CM rH M -t CO CM 00 00 i-l CO i-l g t-h CO CO CD CO 00 tI< CO CO CM lO CM 00 OQ CM CO CO CM CM CO H COrt H rt £2; a -4-3 03 co c fa 5 „ £ 5 b S 2 e 1) 1) «3 si - 2 -S '33 _ D- . *f ^ a s fe a -i ^MS M ■< W '"l Ca ^ r -1 o °3 < W 2 O 02 fa t^ t^ t^ t^ i-» i~- t^ t- N N N N l> CO CO CO CO CO CO CO CO CO CO CO CO CO ■3 a_s 1 1 1 NOiOO 4l CM CM 1 1 1 1 1 1 h IOOHOCO *s-s O) CN w rt CM CM CO CO CO Qo-3. i i i i H« lOOl CO 00 OS 1 1 1 1 1 1 O O CM CM ^h CM «L 1 CD CO c3 03 tf o aj . . U >> e •a • • -^ ° ° fa 73 O O ^ d d O ^ ^ O O °8 jS g § o o ^ 09 OQx c S o -. -* =a = ^c o o » O O g 3 B B 5^ OO g m"5 t. h ; » r- c ' Tt CU CD 3-iJ 03 J-. J-i *>, CJ <; fa fa § i— i q ;-. h C3 o . OJ cj o3 "0 £3 co « o o <: fa T3 T3 -o -c c 3 CO .2 P a ^ ^ a ., cu cu - c CCJ CU +3 +j i-i Cj ^ c 33 q3 o •. >> c~> >^ ^c ^ -a >, f P "S -a O cj d tj cj c3 O O CJ 03 ^> i 1 .3 o Q S5o^ £ ££ •^ ^ c3 oi <—* ■** & P fa fc O tf a CO X as 'F 2 3 > C > > c CO - s "0 ■ OJ * nil 5 o 03 ■ h h 3 OJ OJ sS A! w C OJ =• o Kxa i. >, ■g - jg 03 53 = 22 = S o 5 K "3 03 CJ Cv -^ OJ "S .3 S cu g ^ £ c c o O ■/ 55 55 tf oq CO o c fa fa ^ 18 OIL AND GAS DEVELOPMENT IN ILLINOIS IN 1937 Oct. 8 and 9, had two half-day programs on oil — one on economic and legal questions, the other on geology and development. Outlook With the discovery of oil at a number of widely scattered points in the basin late in 1937 and the early part of 1938, and with a large acreage under lease in the state, including a total of 2,400,000 acres by 12 major Table 6 — Illinois Completions for 1937 Month Comple- tions Producing Wells Month Comple- tions Producing Wells January 5 6 9 15 14 22 1 6 4 7 10 16 July August 27 49 92 76 71 61 18 February 31 March September October November 63 April 55 May 40 June December 36 Total 447 287 companies, there is every indication that drilling activity will increase greatly in 1938 and that other new fields will be discovered. Acknowledgments The writer is indebted to many companies and individuals for furnish- ing information used in this report. Dr. George V. Cohee of the Survey staff assisted the writer in assembling the data. alfred h. bell 19 Footnotes to Column Headings — Table 1 • In areas where both oil and gas are produced, unless gas is marketed outside the field, such areas are included in column headed "Oil." Manufacture of casinghead gasoline and carbon black is inter- preted as outside marketing of gas. 6 Wells producing both oil and gas are classified as "Producing Oil Only" unless gas from them is marketed off the lease. ' W, water; G, gas; A, air; AG, air-gas mixture. Numbers following letters indicate numbers of injection wells. d Bottom-hole pressures are preceded by "e." All other figures represent pressures at casinghead with well closed. * P, paraffin; A, asphalt; M, mixed. I Cam, Cambrian; Ord, Ordovician; Sil, Silurian; Dev, Devonian; Mis, Mississippian; MisL, Lower Mississippian; MisU, Upper Mississippian; Pen, Pennsylvanian; Per, Permian; Tri, Triassic; Jur, Jurassic; CreL, Lower Cretaceous; CreU, Upper Cretaceous; Eoc, Eocene; Olig, Oligocene; Mio, Miocene; Pli, Pliocene. ' S, sandstone; SH, sandstone, shaly; Ss, soft sand; H, shale; L, limestone; LS, limestone, sandy; C, chalk; A, anhydrite; D, dolomite; Da, arkosic dolomite; GW, granite wash; P, serpentine; O, oolite; Sit, siltstone. A Figures are entered only for fields where the reservoir rock is of pore type. Figures represent ratio of pore space to total volume of net reservoir rock expressed in per cent. "Por" indicates that the reservoir rock is of pore type but said ratio is not known by the author. " Cav" indicates that the reservoir rock is of cavernous type; "Fis," fissure type. ' A, anticline; AF, anticline with faulting as important feature; Af, anticline with faulting as minor feature; AM, accumulation due to both anticlinal and monoclinal structure; H, strata are horizontal or near horizontal; MF, monocline-fault; MU, monocline-unconformity; ML, monocline-lens; MC, mono- cline with accumulation due to change in character of stratum; MI, monocline with accumulation against igneous barrier; MUP, monocline with accumulation due to sealing at outcrop by asphalt; D, dome; Ds, salt dome; T, terrace; TF, terrace with faulting as important feature; N, nose; S, syncline. ; Information will be found in text as indicated by symbols; A, name of author, other than above, who has compiled the data on the particular field; C, chemical treatment of wells; G, gas-oil ratios; P. proration; U, unit operation; R, references; W, water; O, other information. Explanation Generally in Table 1 the unit for presentation of data is a field. For our purposes a field is defined as the whole of a surface area wherein productive locations are con- tinuous. Such unit commonly includes and surrounds nonproductive areas. Such unit commonly includes a great variety of geologic conditions — several units of con- tinuous productive reservoirs of distinctly different structure and of distinctly different stratigraphy. Therefore it is hoped that our authors will subdivide "field" so as to enable students to make analyses that may have scientific and/or commercial value. As to each space in the tabulation, it is either (1) not applicable, (2) the proper entry is not determinable, (3) the proper entry is determinable, but not determinable from data available to the author, (4) the proper entry is determinable by the author. In spaces not applicable, the author will please draw horizontal lines; in spaces where the proper entries are not determinable, the author will please insert x; in spaces where the proper entries are determinable but not determinable from data available to the author, the author will please insert y; in spaces where the proper entries are deter- minable by the author he will, of course, make such entries. Generally, y implies a hope that in some future year a definite figure will be available. Inability to determine precisely the correct entry for a particular space should not lead the author to insert merely y. Contributions of great value may be made by the author in many cases where entries are not subject to precise determination. In such cases the author should use his good judgment and make the best entry possible under the circumstances. For many spaces, the correct entries represent the opinion of the author (for example, "Area Proved") and in such cases the entries need not be hedged to such extent as in cases where the quantities are definite yet can be ascer- tained only approximately by the author. 20 OIL AND GAS DEVELOPMENT IN ILLINOIS IN 1937 In cases under definite headings but where figures are only approximate, the author may use x. For example, if the total production of a field is known to be between 1,800,000 and 1,850,000, the author may report l,8xx,xxx; or if the produc- tion is between 1,850,000 and 1,900,000, the author may report l,9xx,xxx. Where a numeral is immediately to the left of x or y, such numeral represents the nearest known number in that position. As to quantity of gas produced from many fields the question will arise as to whether the figures should include merely the gas marketed or should include also estimates of gas used in operations and gas wasted. Although rough approximations may be involved, our figures should represent as nearly as possible the total quantity of gas removed from the reservoir. While we have not provided a column for showing the thickness of the productive zone, generally the difference between average depth to bottoms of productive wells and average depth to top of productive zone will represent approximately the average thickness of the productive zone. For fields where this is not true because of unusually high dips, or for other reasons, it is suggested that the authors indicate in their texts the approximate average thickness of the productive zone. The figure representing net thickness of producing rock should correspond to the total of the net portions of the producing zone which actually yield oil into the drill hole. It is recognized that for some fields the authors can make only rough guesses — so rough that figures would be of no value. In such cases the authors should enter either x or y, whichever is more appropriate. We are particularly anxious to have every author give due consideration to the determination of structural conditions of each oil and/or gas body. Please consider each oil and/or gas reservoir and indicate its structure. The mere fact that a reservoir is on an anticline is not proof that the structural condition affecting the accumulation is anticlinal; for example, an oil and/or gas body limited by the upper margin of a lens on the limb of an anticline is "ML" as to structure. By all means, if the oil body occupies any position in the lens other than its upper limit, please so indicate clearly by footnote, for "ML" means, unless modified, that the accumulation is at the upper part of the lens. In every case where the oil and/or gas body terminates short of the up-dip continuity of the reservoir, please carefully check your evidence and then appropriately record your conclusion. "Terrace," "Nose" and "Syn- cline" are the only terms in our legend which presume such continuity. Please note that the heading " Number of Dry and/or Near-dry Holes " is intended to cover only such holes as are within the limits of the defined fields. In Table 2 are listed the important wildcat wells completed during the year. By the term "important" is meant: wells discovering new fields; wells resulting in the discovery of important extensions to old fields; wells discovering new zones in old fields; wells condemning important areas or resulting in significant stratigraphic information, even if the wells are dry; and exceptionally deep wells. At the foot of this table the total number of wells drilled in each district is given, segregated as to oil wells, gas wells and dry holes. The number of wells drilling on Dec. 31, 1937 are in two divisions, designated as wildcat wells and wells in proven fields.