Energy Industry
Industry: Email Alert RSS FeedThree new U.S. depth records set
World Oil, Feb, 2001
U.S. producing true vertical depth records [1]
State Total
or District depth Year Company, well and location
Alabama onshore 18,689 1993 Union Oil Co. of Calif., International
Paper Co. 17-7 lA-B, Chunchula Unit,
Mobile Cnty
Alabama state waters 21,805 1992 Exxon Corp.,
S.L 537-2, Tract 112, N.W. Gulf,
Mobile area
Alaska onshore 17,684 1977 Unocal, Soldotna Creek Unit
33-33, 33-8n-9w-sm
Alaska state waters 14,920 1993 Phillips Petroleum.,
N. Cook Inlet Unit A-13, 6-11n-9w-sm
Arizona 6,793 1960 Texaco U.S.A.,
1 Navajo-Z, nw sw 36-41 n-30n,
Apache Cnty
Arkansas 11,804 1995 Samson Resources,
Placid 1-4,
Columbia Cnty
California onshore 18,876 1975 Tri-Valley Oil & Gas Co., Tenneco-
Union-GBR et al 66X, 3-27s-22e,
Kern Cnty
California state waters 13,240 1956 Chevron U.S.A.,
State C-5, 35-2n-23w,
Ventura Cnty
Colorado 17,654 1977 Champlin Petroleum,
Shell Creek 44-27, Government
C-9713-2, 27-12n-99w, Moffat Cnty
Florida onshore 16,656 1988 Hughes Eastern Corp.,
Walker-Boely 34-2, McDavid Field,
Escambia Cnty
GOM OCS 22,936 2000 Shell Deepwater Production, Inc.,
OCS-G 11553-A2,
Garden Banks Blk 602
Illinois 5,405 1980 Moore Engr.,
Gray Estate 8, 30-30s-8e,
White Cnty
Indiana 8,429 1998 Kestrel Rsources, Inc.,
Mike Hastings-1, 3-5s-14w,
Posey Cnty
Iowa 994 1963 Natural Gas Pipeline,
W.F. Flynn P-1, 20-76n-9w,
Washington Cnty
Kansas 6,774 1967 Mobil Oil,
Creamer Estate 1, 13-34s-37w,
Stevens Cnty
Kentucky 8,546 1995 Blue Ridge Group, Inc.,
Jewel Greene 1, 10-T-79
Elliot Cnty
Louisiana North 15,368 1979 Getty Oil, CV RA SUJJ,
B. Treat 1,
Winn Parish
Louisiana So. state waters 20,500 1971 Hunt Oil,
S.L. 5015,
Grand Isle Blk. 25
Louisiana So. onshore 21,862 1969 Texaco U.S.A.,
S.L. 466-1,
Caillou Island
Maryland 10,376 1994 Fox O&G, Curry1,
Cmberband Rd.,
Allegany Cnty
Michigan 12,373 1996 Newstar Energy,
State Fraser-Geno 1-18, 20-18n-3e,
Bay Cnty
Mississippi 21,727 1976 Shell Oil,
Cox 5A, 29-3n-3e,
Rankin Cnty
Missouri 3,680 1987 Stone Petr. Corp.,
Schooler 16-8,
Atchison Cnty
Montana 13,012 1980 Sun Oil,
Panasuk Lease 1, 20-29n-59e,
Roosevelt Cnty
Nebraska 8,630 1987 Sun Exploration & Production,
Prarie State 2-A, nw nw27-25s-33a
Nevada 8,694 1967 Texota, Eagle Springs Unit
1-34, se so ne 34-9n-57e,
Nye Cnty
New Mexico, N.W. 10,958 1971 Tenneco Oil E&P,
Pah 1, 3-25n-11w,
San Juan Cnty
New Mexico, S.E. 17,515 1964 BTA Oil Producers,
Rojo 7811 JV-P1, nw nw 27-25s-33e,
Lea Cnty
New York 9,752 1999 Pennsylvania General Energy Corp.
Jimerson 1240, Hornsby Town,
Steuben Cnty
North Dakota 15,802 1996 Cont. Res.,
Swede 1-8, 5-132n-106w,
Bowman Cnty
Ohio 8,953 1997 Newstar Energy,
Bryan Unit 1, Sec. 29, E. Twp,
Carroll Cnty
Oklahoma 25,152 1985 Leede O&G, Inc.,
McCall 1-29, 29-11n-25w,
Beckham Cnty
Oregon 3,027 1981 American Quasar Petroleum,
Hickey 9-12, 9-12s-2w, Lebanon Fld.,
Linn Cnty
Pacific OCS 11,939 1990 Texaco U.S.A.,
0284-A020, Pitas Point Unit,
Platform Habitat
Pennsylvania 13,186 1985 Texaco U.S.A.,
Pennsylvania State Forest
Tract 289-1. McHenry Twp.
South Dakota 9,150 1973 Lycoming Cnty Depco, Inc.,
Otterness 41-22, 22-23n-5e,
Harding Cnty
Tennessee 3,297 1984 ABC Petr.,
Blue Diamond 1, 8-ls-66e, LaFollette
Quad, Cambell Cnty
Texas Dist. 1 20,558 1981 TXO Prod. Corp.,
Washburn Ranch C 1,
McMullen Cnty
Texas Dist. 2 18,008 1970 Chevron U.S.A.,
A. Mocygemba 1,
Karnes Cnty
Texas Dist. 3 21,396 1981 Placid Oil,
Elizabeth Sorsby et al 1,
Waller Cnty
Texas Dist. 4 onshore 17,599 1970 Exxon U.S.A.,
J.G. Kenedy, Jr. J-7E1 Paistle, La
Parra Grant, A-37, Kenedy Cnty
Texas Dist. 4 state watres 12,914 1980 Mobil Prod.-Tex. & N.M.,
Tex. Gulf 76518-1, Blk. 881,
Klegburg Cnty
Texas Dist. 5 16,902 1980 TIPCO,
Gus Lanier 1, J. Maria Viesa
XI League A-30, Leon Cnty
Texas Dist. 6 13,350 1969 Heritage Energy,
Chitsey 1, J.H. Milligan
Surv., A-309, Franklin Cnty
Texas Dist. 7B 7,367 1984 Jack F. Grimm,
Price 2, Sec. 222, Blk. 1-A,
H&TC RR Surv., Noland Cnty
Texas Dist. 7C 18,595 1983 Shell Western E&P,
G.K. Mitchell 1, Sec. 31, Blk. 1,
CCSD&RGNG Surv., Terrell Cnty
Texas Dist. 8 25,466 1982 Exxon U.S.A.,
McComb Gas U. B-1, Sec. 3, Blk. 198,
N.T. Wilson Surv., Pecos Cnty
Texas Dist. 8A 14,119 1970 Union Texas Petr.,
Norman 2-U, Sec. 7, Blk. C-45,
PSL Surv., Gaines Cnty
Texas Dist. 9 16,540 1960 Chevron U.S.A.,
M.I. McAdams 1, W.B. Chiles
Surv., A-296, Grayson Cnty
Texas 01st. 10 [2] 26,536 1977 Chevron U.S.A.,
R. Ledbetter 1, Sec. 21, Blk. L,
J.M. Lindsay Survey, Wheeler
Utah 20,600 1985 Utex Oil Co./ANR Prod. Co.,
Brotherson 2-14B4,14-2s-4w,
Duchesne Cnty
Virginia 7,238 1957 Clinchfield Coal Co.,
Clinchfield Coal Co. 193, Duty Quad,
Dickeson Cnty
Washington onshore 4,118 1957 J.W. Tanner, Sunshine Mining Co.,
et al, Medina-1, 15-18n-12w,
Grays Harbor Cnty
West Virginia 14,300 1975 Exxon U.S.A.,
McCoy 1, Washington District,
Jackson Cnty
Wyoming 24,938 2000 Burlington Resources,
Bighorn 5-6, 6-t38n-r89w,
Fremont Cnty.
State
or District Formation Production
Alabama onshore Jurasssic/Smackover Gas
Alabama state waters Jurassic/Norphlet Gas
Alaska onshore Paleogene Oil
Alaska state waters Tertiary Gas
Arizona Devonian Oil
Arkansas Jurassic/Haynesville Dual
California onshore Vedder Oil
California state waters Cretaceous Oil
Colorado Triassic/Nugget Gas
Florida onshore Jurasssic/Smackover Oil
GOM OCS Oil
Illinois Devonian Oil
Indiana Ordovician/Cambrian Oil
Iowa Ordovician Oil
Kansas St. Louis Gas
Kentucky Cambrian Oil
Louisiana North Cotton Valley Gas
Louisiana So. state waters Miocene Gas
Louisiana So. onshore Miocene Gas
Maryland Ordovician Oil
Michigan Ordovician Gas
Mississippi Norphlet Gas
Missouri Precambrian Oil
Montana Ordovician Oil
Nebraska Carboniferous Oil
Nevada Tertiary-Eocene Oil
New Mexico, N.W. Paradox Oil
New Mexico, S.E. Devonian Gas
New York Ordovician Gas
North Dakota Ordovician Oil
Ohio Ordovician/Cambrian Gas
Oklahoma Ordovician/Devonian Gas
Oregon Oligocene Gas
Pacific OCS Neogene Gas
Pennsylvania Bald Eagle Gas
South Dakota Upper Ordovician Oil
Tennessee Montegale Oil
Texas Dist. 1 Cotton Valley Gas
Texas Dist. 2 Edwards Oil
Texas Dist. 3 Pang-Llan Gas
Texas Dist. 4 onshore Frio Gas
Texas Dist. 4 state watres Frio Gas
Texas Dist. 5 Bossier Gas
Texas Dist. 6 Smackover Oil
Texas Dist. 7B Ellenburger Oil
Texas Dist. 7C Ellenburger Gas
Texas Dist. 8 Ellenburger Gas
Texas Dist. 8A Devonian Oil
Texas Dist. 9 Basil Oil Creek Oil
Texas 01st. 10 [2] Ellenburger Gas
Utah Cretaceous Gas
Virginia Devonian Gas
Washington onshore Miocene Oil
West Virginia Rome Gas
Wyoming Madison Gas
(1.)A11 records provided by state and federal agencies.
Depths measured from bottom of perforated
interval or open completion Interval.
(2.)Current U.S. producing zone depth record
Chronological record of deepest
producing zones in the U.S., since
1938 [*]
Year Production
drilled Company, well and location Type Depth
1938 Fohs Oil Co.'s Buckley-Bourg 1, Gas 13,266
DeLarge field, Terrebonne Parish,
South Louisiana
1943 Union Producing Co.-Fohs Oil Co.'s Gas 13,490
Fitzpatrick-Vizard 1, DeLarge field,
Terrebonne Parish, South Louisiana
1944 Union Producing Co.-Fohs Oil Co.'s Buckley- Oil 13,503
Bourge 2, DeLarge field, Terrebonne Parish,
South Louisiana
1945 Shell Oil Co.'s Smith-State Unit 1-1, Weeks Oil 13,520
Island field, Iberia Parish, South Louisiana
1946 Shell Oil Co.'s Smith-State Unit 1-2, Weeks Oil 13,778
Island field, Iberia Parish, South Louisiana
1947 Shell Oil Co.'s Smith-State Unit 1-3, Weeks Oil 13,888
Island field, Iberia Parish, South Louisiana
1947 The Texas Co.'s La Fourche Basin Levee Gas 13,904
District 1, Queen Bess Island field,
Jefferson Parish, South Louisiana
1948 Pure Oil Co.'s Unit 1, West Poison Spider Oil 14,307
field, Natrona County, Wyoming
1948 Denver Producing & Refg. Co.'s School Land Gas 15,510
1-A, Watonga-Chickasaw Trend field, Caddo
County, Oklahoma
1949 Standard Oil Co. of California's Mushrush 5, Oil 15,530
Masco field, Kern County, California
1953 Shell Oil Co.'s Weeks-Gall Unit 1-1, Weeks Oil 17,122
Island field, Iberia Parish, South Louisiana
1953 Shell Oil Co.'s Gonsoulin Minvielle-State 2, Oil 17,306
Weeks Island field, Iberia Island,
South Louisiana
1953 Richfield Oil Corp.'s Coles Levee "A" 67-29, Oil 17,892
Coles Levee North field, Kern County,
California
1956 Richardson & Bass et al's Humble-LL&E 1-L, Oil 21,465
Lake Washington field, Plaquemines Parish,
South Louisiana
1964 Forest Oil Co. and Robert J. Zonne et al's Gas 21,793
Charles J. Walker 1, Pecos County,
West Texas
1965 Union Oil Co. of Calif.'s No. 1 W.C. Tyreel Gas 22,032
Unit 3, Pecos County, West Texas
1967 Humble Oil & Refining Co.'s Henry Wilbanks Gas 22,610
11, Gomez field, Pecos County, West Texas
1968 Gulf Oil Corp.'s "DD" Unit 1, Gomez field, Gas 22,752
Pecos County, West Texas
1971 Texaco's E. Riggs Gas Unit 1, Pecos County, Gas 23,040
West Texas
1972 Union Oil Co. of California's Bruner 1-33, Gas 24,548
nw se ne 33-11n-25w, Beckham County,
Oklahoma
1977 Chevron's Ruth Ledbetter 1, Sec. 21, Blk. L, Gas 26,536
J.M. Lindsay Survey, Wheeler County, Texas
(*.)All records provided by state and
federal agencies. Depths are TVD
measured from bottom of perforated
interval or open completion interval.
U.S. drilling true vertical
depth records [1]
State Total
or District depth Year
Alabama onshore 21,476 1992
Alabama state waters 22,163 1985
Alaska OCS 18,303 1988
Alaska onshore 20,211 1980
Alaska state waters 17,756 1992
Arizona 18,013 1980
Arkansas 20,661 1992
Atlantic OCS 21,872 1977
California onshore 24,426 1987
California state waters 16,666 1966
Colorado 22,092 1986
Delaware 3,012 1935
Florida onshore 18,670 1975
Florida state waters 18,011 1983
Georgia 17,800 1997
GOM OCS 26,978 1998
Idaho 18,540 1982
Illinois 14,942 1976
Indiana 8,429 1998
Iowa 17,851 1987
Kansas 11,300 1984
Kentucky 15,200 1977
Louisiana North 25,015 1985
Louisiana So. onshore 25,703 1981
Louisiana So. state waters 22,840 1968
Maryland 11,617 1973
Massachusetts 6,000 1988
Michigan 17,466 1975
Minnesota 7,440 1978
Mississippi 25,500 1986
Missouri 10,089 1988
Montana 17,818 1989
Nebraska 9,971 1979
Nevada 19,562 1980
New Mexico N.W. 21,100 1980
New Mexico, S.E. 22,926 1968
New York 13,500 1958
North Carolina 10,044 1946
Ohio 11,442 1967
Oklahoma [2] 31,441 1974
Oregon 13,177 1979
Pacific OCS 18,312 1976
Pennsylvania 21,640 1974
South Carolina 12,750 1984
South Dakota 9,771 1976
Tennessee 11,540 1982
Texas Dist. 1 24,031 1984
Texas Dist. 2 24,760 1973
Texas Dist. 3 24,348 1982
Texas Dist. 4 onshore 23,834 1973
Texas Dist. 4 state waters 18,500 1966
Texas Dist. 5 20,307 1968
Texas Dist. 6 21,892 1983
Texas Dist. 7B 9,700 1981
Texas Dist. 7C 25,357 1990
Texas Dist. 8 29,670 1982
Texas Dist. 8A 14,201 1978
Texas Dist. 9 20,500 1990
Texas Dist. 10 26,566 1977
Utah 21,874 1982
Vermont 6,970 1984
Virginia 17,003 1977
Washington offshore 13,179 1966
Washington onshore 17,518 1983
West Virginia 20,222 1974
Wisconsin 4,966 1992
Wyoming 25,821 2001
State
or District Company, well and location
Alabama onshore Bernard/Hickox, Inc.,
J Hagerman 9-11 1,
Sumter Cnty
Alabama state waters Exxon Corp.,
S.L. 624-1, Tract 114,
N. Central Gulf, Mobile area
Alaska OCS Tenneco,
Aurora-1,
Beaufort sea
Alaska onshore Husky Oil, Tunalik 1,
20-10n-36w-um, 13-11n-010w
Alaska state waters Arco Alaska,
N. Foreland ST 1,
13-11n-010w-sm, 13-11n-010w-sm
Arizona Phillips Petroleum,
State 1-A,
nw se 8-7s-10e
Arkansas Oxy,
U.S.A., Danville 1,
33-5n-22w, Yell Cnty
Atlantic OCS Ocean Production,
COST G-2, Blk. 141, NK 19-2,
Lydonia Cnty
California onshore Occidental of Elk Hills, Inc.,
Elk Hills NPR 934-29R, 29-30s-23e,
Kern Cnty
California state waters Chevron U.S.A.,
State 3403-1, 22-3n-24,
Ventura Cnty
Colorado Celsius Energy,
Deep Unit 1,
se nw 29-12n-97w,
Moffat Cnty
Delaware Cleveland Petroleum Co.,
Apple Orchard 1,
(Od 23-2), 38 23 11n,
Bridgeville Cnty
Florida onshore Bass Enterprises, Collier Corp.
12-2, nw/4 12-52s-27e,
Collier Cnty
Florida state waters Getty Oil,
S.L. 2338-1,
East Bay
Georgia Rattlesnake Ridge,
McNair 1,
Turner Cnty
GOM OCS EEX Corp.,
OCS-G 10350-1,
Garden Banks Blk. 386
Idaho Exxon U.S.A.,
Meyers Federal 1, 14-14n-35e,
Clark Cnty
Illinois Texas Pacific Oil,
Streich Comm. 1,
Pope Cnty
Indiana Kestrel Rsources, Inc.,
Mike Hastings-1, 11-8s-14w,
Posey Cnty
Iowa Amoco Prod.,
M.G. Eischeid 1, 6-83n-35w,
Carroll Cnty
Kansas Texaco U.S.A.,
Noel Poersch 1, sw sw31-5s-5e,
Washington Cnty
Kentucky Exxon U.S.A.,
Choice Duncan 1, Carter coord., 5-m-22,
Webster Cnty
Louisiana North Standard Oil,
L.W. Magoun 1,
Concordia Parish
Louisiana So. onshore Martin Expl.,
Echart 1, St.
Landry Parish
Louisiana So. state waters Gulf Oil,
S.L. 3529-7,
W. Delta Blk. 27
Maryland Texas Eastern,
Bowman Seibert 2, Accident Quad,
Garret Cnty
Massachusetts Peter Britton,
Patton Well,
Hamilton
Michigan Mclure Oil,
Sparks, Ecklebarger,
Whightsil 1-B, 8-10n-2w,
Gratiot Cnty
Minnesota Turmoil, Inc.,
Lee Hattenburger 1, se se2-46n-21w,
Cariton Cnty
Mississippi FNP Opr. Co., Ltd.,
ZPtn., Wilson Est. 1, 19-5n-2w,
Adams Cnty
Missouri Amoco Prod.,
Cvo., E.L. Spence Trust 1,
Duncan Cnty
Montana Unocal,
Federal 1-B30, 30-14n-5w,
Lewis & Clark Cnty
Nebraska Chevron U.S.A.,
Chevron-Duncan-Compton 1, 31-16n-58w,
Kimball Cnty
Nevada Mobil Oil,
Virgin River U.S.A-1A, se sw9-15s-68e,
Clark Cnty
New Mexico N.W. Shell Oil,
Isleta Federal 2, sw nw 16-18n-2e,
Bernalillo Cnty
New Mexico, S.E. Skelly Oil,
Mexico "P" Federal 1, se nw 21 26s-35e
New York N.Y. State Natural Gas Co.
R. Olin 1, Woodhull Town,
Steuben Cnty
North Carolina Standard Oil,
N.J., Cape Hatteras 1,
Dare Cnty
Ohio Amerada Hess,
Rob. Uliman 1, Sec. 31, Elk Twp.,
Noble Cnty
Oklahoma [2] Lone Star Prod.,
Bertha Rogers 1, 27-10n-19w,
Washita Cnty
Oregon Mobil Oil,
Sutherland Unit 1, 36-24s-5w,
Douglas Cnty
Pacific OCS Texaco U.S.A.,
OCS-P0234-3,
Pitas Point Unit
Pennsylvania Amoco,
Leonard Svetz 1, Middle Creek Twp.,
Somerset Cnty
South Carolina Essex O&G,
Lightsey 1, 5 mi. west of Williams,
Colleton Cnty
South Dakota Ken D. Luff, Inc.,
Dworshak 1-19, 23n-6e,
Harding Cnty
Tennessee Arco O&G,
Arco/Oxy Sanford Heirs 1, 21-4s-64e,
Anderson Cnty
Texas Dist. 1 Piacid Oil,
Peeler 1,
McMullen Cnty
Texas Dist. 2 Chevron U.S.A.,
Ray. G Jacobs 1,
Goliad Cnty
Texas Dist. 3 Placid Oil,
Dreahn 1,
Waller Cnty
Texas Dist. 4 onshore Shell Oil,
El Paso-Benavides Ranch 1,
Sec. 669, A 162,
Webb Cnty
Texas Dist. 4 state waters Mobil Oil,
Tex. Gulf 59202-1, Blk. 961-L,
Kenedy Cnty
Texas Dist. 5 Shell Oil,
E.W. Barnett 1,
Hill Cnty
Texas Dist. 6 J.R. Parten,
37 Seven J Stock Farm, J. Durst A-29 Surv.,
Hou. Cnty
Texas Dist. 7B Ameri Energy,
Billy McGinnis 1, Samuel Barrow Sur.,
Brown Cnty
Texas Dist. 7C Exxon Corp.,
Clifford Gatlin 1, Sec. 44,
Blk. D-10, TRCC Surv.,
Terrell Cnty
Texas Dist. 8 Hunt Energy,
Cerf Ranch 1-9, Sec. 9, Blk. 130,
T&St. L RR Surv.,
Pecos Cnty
Texas Dist. 8A Shell Oil,
Tex. Comm. Bnk. 1, Sec. 112,
Blk. G., WTRR Surv.,
Gaines Cnty
Texas Dist. 9 Heaps Expl.,
C.A. Matthews 1, Murphy Surv., A-7989,
Grayson Cnty
Texas Dist. 10 Chevron U.S.A.,
R. Ledbetter 1, Sec. 21, Blk. L,
J.M. Lindsay Surv.,
Wheeler Cnty
Utah Texaco U.S.A.,
Thousand Peaks Ranch 1, 12-1n-8e,
Summit Cnty
Vermont Columbia Gas Transmission,
David & Jean Burner 1, Fairfield,
Franklin Cnty
Virginia Gulf Oil,
Price 1, Hansonville Quad,
Russell Cnty
Washington offshore Shell Oil,
1A-ET, Lease P-0150, 10 mi.
off Pacific Cnty
Washington onshore Shell Oil,
BN 1-9, 9-15n-25e,
Grant Cnty
West Virginia Exxon U.S.A.,
Gainer Lee 1, Center District,
Calhoun Cnty
Wisconsin Terra Energy Ltd.,
Terra-Patrick 7-22, nw se22-47n-6w,
Bayfield Cnty
Wyoming Burlington Resources,
Bighorn 6-27, Madden field,
27-t39n-r90w,
Fremont City
State
or District Formation
Alabama onshore Silurian
Alabama state waters Jurassic/Norphlet
Alaska OCS --
Alaska onshore --
Alaska state waters --
Arizona Precambrian
Arkansas Ordovician/Cambrian
Atlantic OCS Nugget
California onshore Miocene
California state waters Cretaceous
Colorado Carboniferous
Delaware Cretaceous
Florida onshore Jurassic
Florida state waters Triassic
Georgia Triassic
GOM OCS --
Idaho Precambrian
Illinois Granite
Indiana Ordovician/Cambrian
Iowa Precambrian
Kansas Precambrian
Kentucky Precambrian
Louisiana North --
Louisiana So. onshore --
Louisiana So. state waters Miocene
Maryland Upper Ordovician
Massachusetts Rhyolite
Michigan Precambrian
Minnesota Paleoproterozoic
Mississippi --
Missouri Lamonte
Montana Precambrian
Nebraska Precambrian
Nevada Basement
New Mexico N.W. Cretaceous
New Mexico, S.E. Ellenburger
New York Precambrian
North Carolina Granite
Ohio Precambrian
Oklahoma [2] Ordovician/Cambrian
Oregon Paleocene
Pacific OCS Neogene
Pennsylvania Gatesburg
South Carolina Triassic
South Dakota --
Tennessee Precambrian
Texas Dist. 1 --
Texas Dist. 2 --
Texas Dist. 3 --
Texas Dist. 4 onshore Smackover
Texas Dist. 4 state waters Frio
Texas Dist. 5 Undefined Paleozoics
Texas Dist. 6 Cotton Valley
Texas Dist. 7B Granite
Texas Dist. 7C --
Texas Dist. 8 Ellenberger
Texas Dist. 8A Maxey, Siluro-Devonian
Texas Dist. 9 Wildat
Texas Dist. 10 Ellenberger
Utah Triassic/Nugget
Vermont --
Virginia Precambrian
Washington offshore Miocene
Washington onshore Chumstick
West Virginia Basement
Wisconsin Middle Proterozoic
Wyoming Madison
(1.)All records provided by
state and federal agencies.
(2.)Current U.S. drilling
depth record
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