PARKER, J. E. -J-

Operated by HILCORP ENERGY COMPANY (P-5 386310) in the BAKKE (DEVONIAN) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 11177District 08Field 05166333Hydrogen sulphide fieldOilCasinghead gasSaveExport
Value, all time
$68.2 M
Jan 1993 – May 2026
Value, last 12 filed months
$1.4 M
at the published price for each month
Months reported
401
no gaps in the span
Streams
2
oil, casinghead gas

The Railroad Commission's own record for the field this lease produces from, including the spacing rule that governs how close together its wells may be drilled.

These are facts about the field, not about this lease. The field holds 15 leases and 43 wells, and the rule below applies to all of them.

Discovered
1956-09-28
as the register files it
Field class
Oil
the register's own label
Between wells
1,100 ft
minimum
From a lease line
467 ft
minimum

A drilling unit in this field needs at least 40 acres.

The register flags this field for hydrogen sulphide. That is a poisonous gas that occurs naturally in some formations. The flag is a property of the field as the Commission records it. It is not a measurement taken at this lease, and it is not a statement that gas is escaping anywhere.

The Commission's schedule remark for this field reads: SEE FIELD RULES FOR CASING REQUIREMENTS.

What this lease produced, and what it was worth

Oil and condensate are valued on the volume the state records as disposed of; gas and casinghead gas on the volume produced. They are different columns of different files, and the difference is not cosmetic.

StreamBasisVolumeValue
OilDisposition1,237,037 bbl$61,271,316
Casinghead gasProduction1,797,033 Mcf$6,884,132
Total$68,155,448

213,213 Mcf of this lease's gas, across 48 months, carries no value here. No free Texas wellhead gas price exists before 1997, so those months are left out of the total rather than valued at zero. The total above is therefore a floor, not an estimate.

Wells on this lease (7)

Every wellbore the Railroad Commission records against this lease key, with the depth, the last completion and the plug date exactly as filed. A well with no plug date is not stated to be producing — the state files no such flag.

These wells centre on 32.2732, -102.5175. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.4 miles.

32.27339, -102.51779 · centre of the wells drawn, derived

What these wells add up to

Every figure below is counted over all of this lease's wells, not over the rows listed above. The Railroad Commission files two facts about a well's state — a plug date and a proration-schedule flag — and a well can carry both, so they are published as separate counts and never merged into a status.

On the schedule
71.4%
5 of 7 wells
With a plug date
28.6%
2 of 7 wells
Median depth
12,330 ft
5 wells filed one
Completion to plug
14.2 years
median over 2 wells

What the state filed about each well

On the RRC proration schedule
571.4%
A plug date is filed
228.6%
BothOn the schedule and plugged. Neither fact cancels the other.
228.6%
NeitherNo plug date, and not on the schedule.
228.6%

A plug date is the date the Commission recorded the wellbore as sealed with cement and abandoned. It is the only end-of-life fact Texas files. There is no "active" flag on a well, so this page does not print one — a well with no plug date is not stated to be producing.

How deep they were drilled

Between 10,600 and 12,362 ft, median 12,330 ft, over the 5 wells that filed a depth.

Completions filed
Aug 1975 – Sep 2009
5 of 7 wells; 2 filed none
Plug dates filed
Aug 2008 – Jan 2021
2 of 7 wells; 5 filed none

Last completion to plug: a median of 14.2 years across the 2 wells that filed both dates, with the middle half between 12.9 years and 15.5 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

7 wells

42-003020921 UYes
42-003021668 LYes
42-003305031312,330 ftSep 2009Yes
42-003307551810,600 ftJun 2009Jan 2021Yes
42-00302131212,349 ftNov 1991Aug 2008Yes
42-003307111412,362 ftJan 1976
42-003307001610,600 ftAug 1975

The API number is the state's, prefixed 42 for Texas. A well is matched to this lease by the lease key the Commission files on the wellbore record, so a well that has moved between leases appears under each one it was filed against.

Every month this lease reported (401)

Volume × price = value, one row per cycle. The price columns are the same series published on the prices page — nothing here is modelled.

401 months

May 20261,5754,541106.413.05$181,427
Apr 20261,5804,26098.932.87$168,534
Mar 20261,7151,25789.753.15$157,880
Feb 20261,4141,59563.503.75$95,771
Jan 20261,5042,62259.138.00$109,902
Dec 20252,0203,94356.664.41$131,855
Nov 20251,4562,99458.593.93$97,063
Oct 20251,0802,77359.383.30$73,295
Sep 20251,2542,44262.743.08$86,190
Aug 20251,2282,84763.933.01$87,089
Jul 20251,6711,85366.743.32$117,666
Jun 20251,2481,45666.483.13$87,522
May 20258231,05060.553.23$53,227
Apr 20251,3592,03162.363.54$91,943
Mar 202545093067.704.27$34,435
Feb 20251,1021,49670.884.34$84,604
Jan 20252,8603,08974.324.28$225,772
Dec 2024351068.993.12$24,215
Nov 202434940069.052.20$24,978
Oct 202429239071.372.28$21,730
Sep 202451438069.612.36$36,678
Aug 20241,8086,87175.632.06$150,918
Jul 202437113,51079.932.15$58,654
Jun 20241,23010,32578.082.63$123,234
May 20241,6701,65578.812.20$135,251
Apr 20242,5532,88684.451.66$220,389
Mar 20243,0373,22580.301.55$248,854
Feb 20243,9704,18176.091.78$309,535
Jan 20245911,05173.023.30$46,621
Dec 20238611,25471.262.61$64,629
Nov 20233,2394,69077.892.81$265,453
Oct 20233,0283,66785.443.09$270,033
Sep 20233,5414,44889.042.74$327,456
Aug 20233,2163,40280.522.67$268,045
Jul 20235951,23374.852.64$47,793
Jun 20234731,13768.962.26$35,186
May 20235401,22470.622.23$40,861
Apr 20238031,36778.122.24$65,789
Mar 20232,7704,43772.852.39$212,413
Feb 20232,7844,22675.112.47$219,526
Jan 20233,2444,76776.533.39$264,413
Dec 20223,3584,64376.415.73$283,185
Nov 20223,1854,18985.005.65$294,377
Oct 20223,2983,97187.185.86$310,805
Sep 20222,4142,17784.888.16$222,673
Aug 20221,9742,73594.529.13$211,545
Jul 20221,1222,394101.587.54$132,029
Jun 20228373,091115.097.98$120,988
May 20227172,027109.378.43$95,512
Apr 20226581,662104.226.84$79,941
Mar 20229202,550108.885.08$113,114
Feb 20228052,22691.054.86$84,111
Jan 20224501,08581.844.54$41,751
Dec 20211,0302,66271.323.90$83,839
Nov 20211,0793,03477.435.24$99,436
Oct 20219492,69979.795.71$91,142
Sep 20217691,72569.865.35$62,953
Aug 20219052,39266.024.22$69,844
Jul 20211,1182,74470.783.98$90,059
Jun 20211,6913,91069.493.38$130,726
May 202152289563.483.02$35,837
Apr 20218201,29360.362.76$53,062
Mar 20219151,88361.302.72$61,206
Feb 20214781,24957.805.55$34,558
Jan 20211,0702,93450.412.81$62,184
Dec 20201,1482,92144.642.68$59,062
Nov 20201,0952,95338.772.71$50,446
Oct 20201,1403,19036.972.48$50,052
Sep 20201,3663,80837.091.99$58,247
Aug 20201,6424,67739.982.39$76,802
Jul 20201,3333,69438.371.83$57,889
Jun 20209793,02734.901.69$39,284
May 20209803,10016.921.81$22,207
Apr 20201,8193,03514.751.80$32,307
Mar 20202,4393,67530.341.86$80,821
Feb 20202,5123,84349.881.98$132,910
Jan 20202,8124,27257.252.09$169,936
Dec 20192,7834,18659.012.30$173,871
Nov 20192,4543,93455.302.75$146,527
Oct 20192,5914,20253.472.42$148,703
Sep 20192,5514,26455.052.66$151,763
Aug 20192,6164,32953.112.30$148,911
Jul 20192,9054,58656.272.46$174,746
Jun 20193,0794,40852.782.49$173,491
May 20192,9553,74958.482.74$183,082
Apr 20193,3453,69762.632.75$219,667
Mar 20191,7962,10856.803.06$108,468
Feb 20192,8953,58550.852.79$157,221
Jan 20193,9204,58746.033.23$195,245
Dec 20183,6723,55546.594.19$185,958
Nov 20180052.934.24$0
Oct 201841061.443.40$2,519
Sep 20181,1401,79859.543.11$73,464
Aug 20182,0462,79859.403.07$130,113
Jul 20182,2203,05465.142.93$153,565
Jun 20182,7973,91260.183.08$180,360
May 20182,9804,16465.382.90$206,911
Apr 20183,3184,36463.842.90$224,480
Mar 20183,3704,66961.222.79$219,323
Feb 20183,1024,20261.782.77$203,265
Jan 20183,4334,69062.874.01$234,636
Dec 20173,4204,45157.272.92$208,867
Nov 20173,3164,42355.423.12$197,565
Oct 20173,3854,65349.292.98$180,730
Sep 20173,1864,50147.523.09$165,295
Aug 20173,2884,86645.373.00$163,796
Jul 20173,2004,62743.873.09$154,669
Jun 20173,2864,52442.493.09$153,589
May 20173,4974,71345.373.26$174,039
Apr 20173,3124,31347.933.21$172,596
Mar 20173,4464,48246.772.98$174,542
Feb 20173,1004,12650.452.95$168,577
Jan 20173,5084,53049.413.42$188,817
Dec 20163,6754,59748.763.72$196,307
Nov 20163,1403,91242.492.64$143,763
Oct 20163,3954,37546.193.09$170,335
Sep 20163,2374,16641.553.10$147,415
Aug 20163,3834,39241.442.92$153,035
Jul 20163,5124,55741.622.92$159,496
Jun 20162,7163,29445.352.69$132,018
May 20163,6524,35442.521.99$163,952
Apr 201665286936.561.99$25,567
Mar 20163,0523,82233.011.79$107,603
Feb 20163,3494,21226.472.06$97,340
Jan 20163,5154,40227.352.36$106,543
Dec 20153,6684,21732.362.00$127,136
Nov 20153,6054,39038.792.17$149,353
Oct 20153,7024,56843.552.43$172,307
Sep 20152,8893,52342.992.76$133,916
Aug 20153,0773,93440.162.87$134,873
Jul 20153,6544,64648.152.95$189,623
Jun 20153,5974,48956.152.88$214,913
May 20153,5254,45355.212.96$207,776
Apr 20153,5464,23349.822.71$188,119
Mar 20153,7824,60542.892.93$175,724
Feb 20153,3974,21044.662.98$164,240
Jan 20153,3874,45443.433.10$160,908
Dec 20143,6364,44454.693.59$214,813
Nov 20143,6234,29270.464.25$273,525
Oct 20143,5204,23078.303.90$292,117
Sep 20143,1013,99186.164.05$283,328
Aug 20143,4624,65489.394.04$328,248
Jul 20143,5214,82496.564.18$360,150
Jun 20143,1224,12298.164.74$325,981
May 20143,5014,41094.734.73$352,494
Apr 20143,5744,50795.944.81$364,564
Mar 20143,7914,62395.895.06$386,897
Feb 20143,2654,23597.406.19$344,234
Jan 20143,5444,61290.404.86$342,795
Dec 20133,4274,65091.824.35$334,915
Nov 20133,3724,64888.853.74$316,978
Oct 20133,6355,05097.423.78$373,207
Sep 20133,0154,630104.113.72$331,105
Aug 20132,8674,157104.253.52$313,528
Jul 20133,2424,792102.523.72$350,185
Jun 20133,0394,40194.403.93$304,193
May 20133,2155,06894.834.15$325,906
Apr 20133,2014,87193.964.28$321,626
Mar 20133,3874,85693.623.91$336,092
Feb 20132,9784,47091.233.42$286,970
Jan 20133,3095,03691.603.42$320,327
Dec 20123,2235,10886.773.42$297,130
Nov 20122,9344,93486.953.62$272,997
Oct 20123,3275,64589.383.40$316,558
Sep 20122,9865,55094.672.92$298,882
Aug 20123,0925,73592.662.91$303,183
Jul 20123,0705,61085.133.02$278,296
Jun 20123,0075,30679.822.52$253,385
May 20122,9365,31891.612.49$282,200
Apr 20123,1105,053101.652.00$326,221
Mar 20123,3055,395105.052.22$359,178
Feb 20123,0985,011101.102.57$326,087
Jan 20123,5235,47898.092.73$360,548
Dec 20113,5295,45496.873.24$359,524
Nov 20111,6422,97695.723.31$167,027
Oct 20113,1925,40584.983.65$290,977
Sep 20113,1085,37483.623.99$281,311
Aug 20113,1155,65283.404.15$283,243
Jul 20113,1115,51494.144.52$317,778
Jun 20113,1685,04392.904.64$317,706
May 20113,1155,27898.134.40$328,924
Apr 20112,7614,829105.964.33$313,481
Mar 20113,5815,42496.364.06$367,072
Feb 20112,9394,27185.644.18$269,549
Jan 20113,7775,31886.504.59$351,114
Dec 20103,5285,19985.734.35$325,059
Nov 20103,7385,62880.843.80$323,540
Oct 20103,9606,02278.103.51$330,407
Sep 20102,2623,83472.633.98$179,546
Aug 20103,6695,87373.684.42$296,287
Jul 20104,1706,01972.554.74$331,042
Jun 20103,8616,05170.364.91$301,373
May 20103,0694,76571.124.24$238,448
Apr 20102,5534,03581.694.12$225,190
Mar 20102,7054,15178.394.39$230,262
Feb 20102,4333,62373.585.44$198,738
Jan 20103,4324,96074.365.96$284,785
Dec 20093,5015,25071.445.48$278,901
Nov 20096,4425,74174.593.75$502,046
Oct 20093,3682,26272.544.11$253,612
Sep 20093,7225,75465.543.06$261,574
Aug 20093,9686,13267.423.22$287,258
Jul 20093,8706,24661.133.46$258,212
Jun 20093,9096,00866.163.90$282,021
May 20093,9505,18454.743.93$236,574
Apr 20093,9364,86046.773.59$201,522
Mar 20093,5144,99142.144.06$168,338
Feb 20093,2674,90432.814.63$129,911
Jan 20094,1585,45935.865.37$178,426
Dec 20084,1235,39137.105.98$185,186
Nov 20084,1294,97055.496.86$263,214
Oct 20083,9764,75575.246.92$332,068
Sep 20083,7813,710101.767.88$413,979
Aug 20083,5575,098114.228.48$449,527
Jul 20084,0716,070131.0811.39$602,761
Jun 20083,8695,495131.3313.03$579,730
May 20084,2276,248123.1711.57$592,956
Apr 20083,6273,440110.3110.45$436,059
Mar 20082,9953,082101.909.66$334,975
Feb 20083,3864,60192.538.77$353,660
Jan 20084,1164,21690.388.21$406,599
Dec 20074,0085,11788.337.30$391,391
Nov 20073,8225,20691.677.29$388,323
Oct 20074,1485,93082.856.92$384,709
Sep 20073,4155,74975.846.24$294,891
Aug 20073,5345,83569.066.39$281,332
Jul 20073,8415,88670.906.39$309,926
Jun 20074,0605,66762.007.55$294,497
May 20074,4016,13758.747.85$306,667
Apr 20074,6856,10459.617.81$326,916
Mar 20072,8973,99656.927.30$194,076
Feb 20073,3854,23555.108.22$221,308
Jan 20074,1095,16350.306.73$241,413
Dec 20064,2055,30556.656.92$274,916
Nov 20064,0255,22854.207.62$257,979
Oct 20064,2144,02254.906.01$255,536
Sep 20063,9974,95960.085.04$265,119
Aug 20064,1025,73868.717.34$323,965
Jul 20063,4075,22869.376.34$269,504
Jun 20063,2194,45966.286.38$241,821
May 20064,1885,76866.016.42$313,509
Apr 20064,1115,37664.397.36$304,277
Mar 20064,2845,17356.707.08$279,543
Feb 20063,8414,90357.597.75$259,207
Jan 20064,0985,29760.598.93$295,618
Dec 20053,6614,95254.9413.42$267,568
Nov 20054,3385,56954.6910.59$296,212
Oct 20054,1972,63858.3413.80$281,246
Sep 20053,8904,02961.4512.08$287,707
Aug 20054,3185,91861.519.80$323,578
Jul 20054,4046,34955.697.84$295,058
Jun 20054,0866,12652.337.38$259,037
May 20054,2546,25245.226.65$233,949
Apr 20053,9183,52049.207.36$218,674
Mar 20053,2134,60550.377.15$194,787
Feb 20053,7765,20645.226.31$203,611
Jan 20054,2415,06343.166.32$215,051
Dec 20044,0245,03339.866.75$194,375
Nov 20043,9855,61445.286.33$215,980
Oct 20044,1816,24549.706.52$248,483
Sep 20043,3584,96643.245.28$171,440
Aug 20044,0866,46842.375.55$209,025
Jul 20044,2006,71038.286.08$201,601
Jun 20044,0126,02036.106.43$183,560
May 20044,1576,48537.486.49$197,922
Apr 20043,5585,46734.475.86$154,672
Mar 20044,2306,58634.365.53$181,764
Feb 20043,8305,08232.455.51$152,283
Jan 20044,1096,30032.036.30$171,299
Dec 20034,2596,40030.266.30$169,208
Nov 20034,1176,21428.804.60$147,124
Oct 20033,9646,70228.174.76$143,565
Sep 20033,8365,86626.314.75$128,785
Aug 20033,9716,74329.765.13$152,767
Jul 20034,1407,10529.415.17$158,496
Jun 20033,9866,84928.565.98$154,817
May 20033,9877,02626.595.97$147,978
Apr 20033,8676,56326.675.41$138,621
Mar 20033,5045,79731.146.10$144,453
Feb 20033,7085,23133.487.93$165,604
Jan 20034,3646,13330.315.58$166,507
Dec 20024,4576,16826.914.85$149,876
Nov 20024,2635,83824.664.14$129,277
Oct 20024,3596,44326.464.23$142,587
Sep 20024,2406,44727.443.64$139,782
Aug 20024,4246,30125.963.16$134,784
Jul 20024,4776,74424.583.06$130,693
Jun 20024,4836,85423.733.34$129,262
May 20024,9177,03624.663.58$146,470
Apr 20024,0745,14323.653.51$114,414
Mar 20024,1515,61022.003.10$108,728
Feb 20024,0585,36218.222.38$86,675
Jan 20023,0592,85517.172.38$59,306
Dec 20013,3984,56016.932.36$68,310
Nov 20013,4794,07118.072.41$72,658
Oct 20013,3334,62319.782.53$77,618
Sep 20011,7945,06024.262.25$54,914
Aug 20012,0865,34524.873.05$68,198
Jul 20011,8355,68223.933.20$62,077
Jun 20011,8285,43124.563.82$65,665
May 20011,9295,70725.524.31$73,810
Apr 20011,8615,51624.685.34$75,359
Mar 20011,9915,85924.545.38$80,360
Feb 20011,7525,23327.755.77$78,797
Jan 20011,9755,70927.478.40$102,202
Dec 20001,9565,83226.889.12$105,780
Nov 20001,8965,69632.215.66$93,298
Oct 20001,9736,08231.235.15$92,912
Sep 20001,9066,13631.875.19$92,569
Aug 20002,2936,58629.644.54$97,870
Jul 20003,4796,57628.534.09$126,150
Jun 20002,1506,34629.304.40$90,900
May 20004,4386,52527.263.68$144,990
Apr 20004,1776,42424.513.12$122,395
Mar 20004,7626,83628.422.86$154,885
Feb 20004,5546,23527.622.73$142,781
Jan 20004,2245,71625.272.48$120,919
Dec 19994,0956,04424.282.42$114,076
Nov 19994,5346,61223.192.43$121,237
Oct 19994,4646,64220.982.80$112,277
Sep 19994,4606,67621.752.62$114,488
Aug 19994,4397,07119.262.88$105,829
Jul 19994,5305,30617.892.37$93,630
Jun 19994,3506,79615.942.36$85,392
May 19994,4106,38415.792.32$84,451
Apr 19993,1972,72815.102.21$54,298
Mar 19993,6065,69712.471.84$55,440
Feb 19993,3125,2599.981.82$42,614
Jan 19994,0076,21410.381.90$53,399
Dec 19984,3526,3949.201.77$51,377
Nov 19984,1774,23710.892.19$54,748
Oct 19983,5305,00512.421.97$53,699
Sep 19983,4314,33512.592.08$52,224
Aug 19983,2335,21411.301.91$46,478
Jul 19983,0535,18511.742.24$47,442
Jun 19983,0583,34011.242.24$41,844
May 19983,1273,54512.622.21$47,284
Apr 19983,2104,17013.042.51$52,306
Mar 19982,5943,64312.802.31$41,616
Feb 19982,0122,99113.952.30$34,944
Jan 19983,0953,80414.702.15$53,693
Dec 19973,2374,44516.322.41$63,545
Nov 19973,0054,07818.193.09$67,255
Oct 19973,4113,64819.253.15$77,152
Sep 19973,2583,73117.742.95$68,822
Aug 19973,2804,33517.862.55$69,656
Jul 19973,1213,76617.582.25$63,329
Jun 19973,5433,62517.242.26$69,264
May 19973,9913,31118.972.31$83,353
Apr 19972,9083,24217.882.08$58,747
Mar 19973,0822,65618.951.94$63,554
Feb 19973,0012,34920.492.21$66,672
Jan 19973,1412,16723.483.54$81,421
Dec 19963,1282,16423.32$72,945
Nov 19963,0591,77321.97$67,206
Oct 19963,1911,83423.31$74,382
Sep 19962,8932,11922.22$64,282
Aug 19963,1791,76620.26$64,407
Jul 19963,2411,58019.55$63,362
Jun 19962,9751,46118.73$55,722
May 19963,3641,46219.43$65,363
Apr 19963,1632,32521.51$68,036
Mar 19963,4222,44319.38$66,318
Feb 19963,4122,36416.98$57,936
Jan 19963,0632,58917.07$52,285
Dec 19953,1343,36317.19$53,873
Nov 19953,2692,61416.00$52,304
Oct 19953,4962,69415.43$53,943
Sep 19953,4183,21516.18$55,303
Aug 19953,4082,82715.92$54,255
Jul 19953,3732,60215.24$51,405
Jun 19953,1403,42016.41$51,527
May 19953,6482,36017.56$64,059
Apr 19953,6052,57317.73$63,917
Mar 19953,2453,03416.44$53,348
Feb 19952,8892,75716.58$47,900
Jan 19952,9423,32115.92$46,837
Dec 19943,0113,72915.03$45,255
Nov 19942,9874,07315.90$47,493
Oct 19943,2124,42615.58$50,043
Sep 19943,2062,89715.29$49,020
Aug 19943,0253,34016.13$48,793
Jul 19943,5013,73917.56$61,478
Jun 19944,4484,65417.09$76,016
May 19943,3635,91215.88$53,404
Apr 19943,8996,41514.14$55,132
Mar 19944,2999,70412.46$53,566
Feb 19943,70814,01812.50$46,350
Jan 19944,01410,01112.66$50,817
Dec 19933,9549,30212.33$48,753
Nov 19934,0528,58714.49$58,713
Oct 19933,7698,79615.85$59,739
Sep 19934,1315,53315.03$62,089
Aug 19934,4286,23815.66$69,342
Jul 19934,4305,79515.46$68,488
Jun 19934,0074,10016.79$67,278
May 19934,2235,91117.68$74,663
Apr 19934,0396,65018.05$72,904
Mar 19934,2208,16418.14$76,551
Feb 19934,2136,59417.90$75,413
Jan 19934,8155,96516.93$81,518

How to read this page

The arithmetic is one multiplication per stream per month. Here it is, worked, on a real row from the table above.

May 2026 — as filed, then multipliedworked
Oil                1,575 bbl  × $106.41 =   $167,596
Casinghead gas     4,541 Mcf  × $  3.05 =    $13,831

────────────────────────────────────────────────────
Month total                                 $181,427

The volumes are the state's, unchanged

Every barrel and every Mcf on this page is a number the Railroad Commission of Texas published in its monthly production query. Nothing is modelled, estimated or filled in.

The dollars are a multiplication, not a valuation

Volume × a published monthly price. It is not what the operator was paid: it takes no account of a contract, a differential, a transportation deduction, or the share any one owner holds.

Oil and gas are priced differently

Oil is a Texas realisation — the crude oil first purchase price. Gas is a benchmark, because no free Texas wellhead gas series exists at any date. The prices page publishes the difference rather than correcting it away.

A lease is not a well

The state reports oil on lease and gas on well, and this page is the lease grain. 08/O/11177 is the state's own key, not one this site invented.