RICHARDSON UNIT

Operated by CHOLLA PETROLEUM, INC. (P-5 150683) in the P. H. D. field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 4610District 8AField 68101001Hydrogen sulphide fieldOilCasinghead gasSaveExport
Value, all time
$65.3 M
Jan 1993 – Jan 2026
Value, last 12 filed months
$442 k
at the published price for each month
Months reported
397
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 35 leases and 206 wells, and the rule below applies to all of them.

Discovered
1944-06-20
as the register files it
Field class
Oil
the register's own label
Between wells
0 ft
minimum
From a lease line
330 ft
minimum

A drilling unit in this field needs at least 20 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: SWR 48.

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
OilDisposition1,509,801 bbl$64,650,935
Casinghead gasProduction260,802 Mcf$687,636
Total$65,338,571

127,968 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 (26)

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 33.2638, -101.4829. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.9 miles.

33.26383, -101.48210 · 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
19.2%
5 of 26 wells
With a plug date
19.2%
5 of 26 wells
Median depth
3,900 ft
25 wells filed one
Completion to plug
17.6 years
median over 3 wells

What the state filed about each well

On the RRC proration schedule
519.2%
A plug date is filed
519.2%
BothOn the schedule and plugged. Neither fact cancels the other.
519.2%
NeitherNo plug date, and not on the schedule.
2180.8%

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

Total depth in feet, 25 of 26 wells. Median 3,900 ft, with the middle half between 3,800 and 3,900 ft; the shallowest is 1,110 ft and the deepest 4,305 ft. The median is published rather than the mean, because a single mis-keyed depth moves a mean and cannot move a median.

When they were last completed

Last completion by decade, 23 of 26 wells, Jun 1985 – Jul 2025. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Jun 1985 – Jul 2025
23 of 26 wells; 3 filed none
Plug dates filed
Dec 1992 – Oct 2025
5 of 26 wells; 21 filed none

Last completion to plug: a median of 17.6 years across the 3 wells that filed both dates, with the middle half between 16.8 years and 29.0 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

26 wells

42-169011451D1,110 ftDec 1992Yes
42-16932552113,900 ftOct 2025Yes
42-169010401
42-16933755183,748 ftJul 2025
42-16932651133,900 ftApr 2025
42-1693258783,907 ftMar 2025
42-1690104633,810 ftMar 2025
42-1693248474,305 ftMar 2025
42-16933756193,742 ftMar 2025
42-1690102363,800 ftMar 2025
42-1690104743,550 ftFeb 2025
42-16933752153,795 ftMay 2023
42-16933754174,090 ftMay 2023
42-16933753163,742 ftAug 2005
42-169328841W3,902 ftDec 1988
42-169328852W3,900 ftDec 1988
42-169328874W3,901 ftDec 1988
42-169328863W3,900 ftDec 1988
42-169328825W3,900 ftDec 1988
42-169328886W3,901 ftDec 1988
42-16932793143,900 ftSep 1987Aug 2003Yes
42-1690104523,800 ftDec 1985Jul 2003Yes
42-1690104853,800 ftSep 1985
42-16932555123,900 ftJun 1985
42-1693257993,900 ftJun 1985Oct 2025Yes
42-16932551103,900 ftJun 1985

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 (397)

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

397 months

Jan 20260059.138.00$0
Dec 20250056.664.41$0
Nov 20250058.593.93$0
Oct 20250059.383.30$0
Sep 20250062.743.08$0
Aug 20250063.933.01$0
Jul 20250066.743.32$0
Jun 20250066.483.13$0
May 20250060.553.23$0
Apr 20250062.363.54$0
Mar 20253,656067.704.27$247,511
Feb 20252,749070.884.34$194,849
Jan 20253,155074.324.28$234,480
Dec 20243,379068.993.12$233,117
Nov 20242,992069.052.20$206,598
Oct 20244,029071.372.28$287,550
Sep 20243,022069.612.36$210,361
Aug 20243,705075.632.06$280,209
Jul 20243,591079.932.15$287,029
Jun 20243,227078.082.63$251,964
May 20243,762078.812.20$296,483
Apr 20243,782084.451.66$319,390
Mar 20243,443080.301.55$276,473
Feb 20243,630076.091.78$276,207
Jan 20244,178073.023.30$305,078
Dec 20233,796071.262.61$270,503
Nov 20234,116077.892.81$320,595
Oct 20233,976085.443.09$339,709
Sep 20233,575089.042.74$318,318
Aug 20233,905080.522.67$314,431
Jul 20234,139074.852.64$309,804
Jun 20234,479068.962.26$308,872
May 20232,909070.622.23$205,434
Apr 20232,389078.122.24$186,629
Mar 20232,554072.852.39$186,059
Feb 20232,059075.112.47$154,651
Jan 20232,583076.533.39$197,677
Dec 20222,373076.415.73$181,321
Nov 20222,334085.005.65$198,390
Oct 20222,556087.185.86$222,832
Sep 20222,861084.888.16$242,842
Aug 20221,804094.529.13$170,514
Jul 20221,7870101.587.54$181,523
Jun 20221,6020115.097.98$184,374
May 20221,0750109.378.43$117,573
Apr 20221,4360104.226.84$149,660
Mar 20221,6370108.885.08$178,237
Feb 20221,645091.054.86$149,777
Jan 20221,613081.844.54$132,008
Dec 20211,805071.323.90$128,733
Nov 20211,459077.435.24$112,970
Oct 20211,793079.795.71$143,063
Sep 20211,419069.865.35$99,131
Aug 20211,802066.024.22$118,968
Jul 20211,804070.783.98$127,687
Jun 20211,611069.493.38$111,948
May 20211,593063.483.02$101,124
Apr 20211,810060.362.76$109,252
Mar 20212,092061.302.72$128,240
Feb 20211,088057.805.55$62,886
Jan 20211,820050.412.81$91,746
Dec 20201,998044.642.68$89,191
Nov 20201,429038.772.71$55,402
Oct 20201,782036.972.48$65,881
Sep 20201,610037.091.99$59,715
Aug 20201,863039.982.39$74,483
Jul 20201,728038.371.83$66,303
Jun 20202,159034.901.69$75,349
May 2020902016.921.81$15,262
Apr 20201,982014.751.80$29,235
Mar 20201,967030.341.86$59,679
Feb 20201,935049.881.98$96,518
Jan 20201,661057.252.09$95,092
Dec 20192,008059.012.30$118,492
Nov 20191,802055.302.75$99,651
Oct 20192,191053.472.42$117,153
Sep 20191,639055.052.66$90,227
Aug 20191,809053.112.30$96,076
Jul 20192,474056.272.46$139,212
Jun 20191,615052.782.49$85,240
May 20191,779058.482.74$104,036
Apr 20191,782062.632.75$111,607
Mar 20191,998056.803.06$113,486
Feb 20191,932050.852.79$98,242
Jan 20191,981046.033.23$91,185
Dec 20182,522046.594.19$117,500
Nov 20181,997052.934.24$105,701
Oct 20182,172061.443.40$133,448
Sep 20182,146059.543.11$127,773
Aug 20182,171059.403.07$128,957
Jul 20182,157065.142.93$140,507
Jun 20182,326060.183.08$139,979
May 20182,168065.382.90$141,744
Apr 20182,522063.842.90$161,004
Mar 20182,191061.222.79$134,133
Feb 20181,804061.782.77$111,451
Jan 20182,513062.874.01$157,992
Dec 20172,006057.272.92$114,884
Nov 20172,381055.423.12$131,955
Oct 20172,367049.292.98$116,669
Sep 20171,983047.523.09$94,232
Aug 20172,329045.373.00$105,667
Jul 20172,307043.873.09$101,208
Jun 20172,158042.493.09$91,693
May 20173,012045.373.26$136,654
Apr 20171,785047.933.21$85,555
Mar 20171,968046.772.98$92,043
Feb 20172,595050.452.95$130,918
Jan 20172,065049.413.42$102,032
Dec 20162,219048.763.72$108,198
Nov 20161,993042.492.64$84,683
Oct 20162,569046.193.09$118,662
Sep 20162,238041.553.10$92,989
Aug 20162,200041.442.92$91,168
Jul 20162,179041.622.92$90,690
Jun 20162,178045.352.69$98,772
May 20162,354042.521.99$100,092
Apr 20162,388036.561.99$87,305
Mar 20162,627033.011.79$86,717
Feb 20161,897026.472.06$50,214
Jan 20162,629027.352.36$71,903
Dec 20152,416032.362.00$78,182
Nov 20152,763038.792.17$107,177
Oct 20152,807043.552.43$122,245
Sep 20152,268042.992.76$97,501
Aug 20152,589040.162.87$103,974
Jul 20152,704048.152.95$130,198
Jun 20152,457056.152.88$137,961
May 20152,445055.212.96$134,988
Apr 20152,283049.822.71$113,739
Mar 20152,847042.892.93$122,108
Feb 20152,354044.662.98$105,130
Jan 20152,612043.433.10$113,439
Dec 20142,238054.693.59$122,396
Nov 20142,460070.464.25$173,332
Oct 20142,239078.303.90$175,314
Sep 20142,455086.164.05$211,523
Aug 20142,270089.394.04$202,915
Jul 20142,765096.564.18$266,988
Jun 20142,402098.164.74$235,780
May 20142,454094.734.73$232,467
Apr 20142,402095.944.81$230,448
Mar 20142,639095.895.06$253,054
Feb 20142,466097.406.19$240,188
Jan 20142,542090.404.86$229,797
Dec 20132,595091.824.35$238,273
Nov 20132,833088.853.74$251,712
Oct 20132,284097.423.78$222,507
Sep 20132,4820104.113.72$258,401
Aug 20132,9210104.253.52$304,514
Jul 20132,3660102.523.72$242,562
Jun 20132,594094.403.93$244,874
May 20132,683094.834.15$254,429
Apr 20132,638093.964.28$247,866
Mar 20133,170093.623.91$296,775
Feb 20132,674091.233.42$243,949
Jan 20133,009091.603.42$275,624
Dec 20122,644086.773.42$229,420
Nov 20122,642086.953.62$229,722
Oct 20122,659089.383.40$237,661
Sep 20122,604094.672.92$246,521
Aug 20122,989092.662.91$276,961
Jul 20122,814085.133.02$239,556
Jun 20122,616079.822.52$208,809
May 20122,807091.612.49$257,149
Apr 20122,9650101.652.00$301,392
Mar 20122,8450105.052.22$298,867
Feb 20122,6410101.102.57$267,005
Jan 20122,825098.092.73$277,104
Dec 20113,064096.873.24$296,810
Nov 20112,750095.723.31$263,230
Oct 20112,815084.983.65$239,219
Sep 20112,835083.623.99$237,063
Aug 20112,615083.404.15$218,091
Jul 20113,161094.144.52$297,577
Jun 20112,992092.904.64$277,957
May 20112,815098.134.40$276,236
Apr 20112,6390105.964.33$279,628
Mar 20112,843096.364.06$273,951
Feb 20112,671085.644.18$228,744
Jan 20112,674086.504.59$231,301
Dec 20103,232085.734.35$277,079
Nov 20102,850080.843.80$230,394
Oct 20102,981078.103.51$232,816
Sep 20103,186072.633.98$231,399
Aug 20102,617073.684.42$192,821
Jul 20102,639072.554.74$191,459
Jun 20103,009070.364.91$211,713
May 20102,808071.124.24$199,705
Apr 20102,824081.694.12$230,693
Mar 20102,826078.394.39$221,530
Feb 20102,651073.585.44$195,061
Jan 20103,035074.365.96$225,683
Dec 20093,05116571.445.48$218,868
Nov 20093,05734074.593.75$229,297
Oct 20092,80852472.544.11$205,846
Sep 20092,82235965.543.06$186,054
Aug 20092,806067.423.22$189,181
Jul 20093,129061.133.46$191,276
Jun 20093,385066.163.90$223,952
May 20093,011054.743.93$164,822
Apr 20092,99623546.773.59$140,966
Mar 20093,578042.144.06$150,777
Feb 20093,210032.814.63$105,320
Jan 20093,0181,52635.865.37$116,422
Dec 20083,5241,48337.105.98$139,605
Nov 20083,4281,05955.496.86$197,485
Oct 20083,23193275.246.92$249,552
Sep 20082,970522101.767.88$306,339
Aug 20083,536984114.228.48$412,229
Jul 20083,6391,035131.0811.39$488,788
Jun 20082,9641,071131.3313.03$403,220
May 20083,5651,210123.1711.57$453,106
Apr 20083,4301,041110.3110.45$389,247
Mar 20083,7441,175101.909.66$392,869
Feb 20083,45080792.538.77$326,306
Jan 20083,90774590.388.21$359,228
Dec 20073,70490788.337.30$333,797
Nov 20073,79184291.677.29$353,661
Oct 20073,75193382.856.92$317,229
Sep 20073,9611,04775.846.24$306,940
Aug 20073,45991769.066.39$244,736
Jul 20074,0221,26070.906.39$293,209
Jun 20073,72389262.007.55$237,559
May 20074,2041,14458.747.85$255,919
Apr 20074,4811,15159.617.81$276,096
Mar 20074,5821,10756.927.30$268,891
Feb 20074,45382955.108.22$252,171
Jan 20074,60778750.306.73$237,026
Dec 20064,64584756.656.92$268,999
Nov 20064,65597654.207.62$259,736
Oct 20064,18289954.906.01$234,998
Sep 20064,2111,05160.085.04$258,291
Aug 20064,3201,50768.717.34$307,888
Jul 20064,0261,08469.376.34$286,159
Jun 20063,81377766.286.38$257,686
May 20064,08274366.016.42$274,227
Apr 20063,89779964.397.36$256,809
Mar 20064,17588956.707.08$243,019
Feb 20063,895057.597.75$224,313
Jan 20064,4371,12260.598.93$278,861
Dec 20054,47878854.9413.42$256,593
Nov 20054,31686754.6910.59$245,222
Oct 20054,6031,18158.3413.80$284,832
Sep 20054,23669761.4512.08$268,721
Aug 20054,14673761.519.80$262,241
Jul 20054,38569155.697.84$249,621
Jun 20054,0761,01552.337.38$220,789
May 20054,1041,04845.226.65$192,553
Apr 20054,09694949.207.36$208,508
Mar 20054,48561750.377.15$230,324
Feb 20053,72755845.226.31$172,057
Jan 20054,23959943.166.32$186,742
Dec 20044,30973239.866.75$176,699
Nov 20044,20560945.286.33$194,258
Oct 20044,41486949.706.52$225,037
Sep 20044,18988643.245.28$185,814
Aug 20044,53267242.375.55$195,751
Jul 20044,43943538.286.08$172,572
Jun 20044,34340936.106.43$159,413
May 20044,6051,02237.486.49$179,233
Apr 20044,65296834.475.86$166,025
Mar 20044,17083934.365.53$147,921
Feb 20044,23819832.455.51$138,614
Jan 20044,35241132.036.30$141,984
Dec 20034,83161430.266.30$150,055
Nov 20034,79271528.804.60$141,295
Oct 20035,01679628.174.76$145,089
Sep 20035,0071,00226.314.75$136,493
Aug 20035,0461,00329.765.13$155,314
Jul 20035,313029.415.17$156,255
Jun 20034,8101,09228.565.98$143,907
May 20035,6131,26326.595.97$156,793
Apr 20035,0171,26726.675.41$140,654
Mar 20035,5671,16531.146.10$180,458
Feb 20035,18169733.487.93$178,984
Jan 20035,9841,21630.315.58$188,163
Dec 20025,4081,03726.914.85$150,563
Nov 20024,95284124.664.14$125,596
Oct 20025,5821,02626.464.23$152,039
Sep 20025,455027.443.64$149,685
Aug 20025,3161,20325.963.16$141,810
Jul 20025,7221,08424.583.06$143,966
Jun 20025,37097123.733.34$130,672
May 20026,3781,58124.663.58$162,948
Apr 20025,7061,53023.653.51$140,321
Mar 20027,6711,66222.003.10$173,919
Feb 20026,2921,49618.222.38$118,194
Jan 20024,45084917.172.38$78,423
Dec 20014,70350116.932.36$80,806
Nov 20014,36735818.072.41$79,773
Oct 20014,45531519.782.53$88,917
Sep 20014,38353824.262.25$107,543
Aug 20014,48882324.873.05$114,129
Jul 20014,43493323.933.20$109,089
Jun 20015,4411,03824.563.82$137,600
May 20014,57465125.524.31$119,533
Apr 20014,70466624.685.34$119,648
Mar 20014,68434024.545.38$116,773
Feb 20014,56272727.755.77$130,788
Jan 20015,11292027.478.40$148,154
Dec 20005,181026.889.12$139,265
Nov 20004,7321,15632.215.66$158,958
Oct 20004,8021,51231.235.15$157,746
Sep 20004,8831,79031.875.19$164,905
Aug 20003,59669729.644.54$109,750
Jul 20004,13380628.534.09$121,211
Jun 20003,88976229.304.40$117,298
May 20003,97682327.263.68$111,414
Apr 20003,93769824.513.12$98,671
Mar 20004,17758628.422.86$120,386
Feb 20003,95359627.622.73$110,807
Jan 20004,30961125.272.48$110,404
Dec 19994,22858524.282.42$104,074
Nov 19994,05069723.192.43$95,616
Oct 19994,20482720.982.80$90,519
Sep 19994,15466721.752.62$92,096
Aug 19994,41342519.262.88$86,217
Jul 19994,3311,13317.892.37$80,169
Jun 19994,2201,04715.942.36$69,740
May 19994,2901,01215.792.32$70,088
Apr 19994,2681,07515.102.21$66,820
Mar 19994,62580812.471.84$59,159
Feb 19994,0868469.981.82$42,316
Jan 19994,7041,01310.381.90$50,752
Dec 19984,7951,1279.201.77$46,113
Nov 19984,6431,00410.892.19$52,757
Oct 19984,77670212.421.97$60,700
Sep 19984,76089512.592.08$61,792
Aug 19984,3351,03311.301.91$50,956
Jul 19984,9201,27211.742.24$60,607
Jun 19984,6991,10411.242.24$55,287
May 19984,9271,31412.622.21$65,078
Apr 19984,8461,06313.042.51$65,855
Mar 19985,14594412.802.31$68,036
Feb 19984,34781213.952.30$62,508
Jan 19985,28098514.702.15$79,738
Dec 19975,20192216.322.41$87,103
Nov 19975,07676118.193.09$94,683
Oct 19975,28381319.253.15$104,259
Sep 19975,0431,02317.742.95$92,486
Aug 19975,4311,09417.862.55$99,793
Jul 19975,40159817.582.25$96,293
Jun 19975,3291,34417.242.26$94,906
May 19975,3161,27118.972.31$103,779
Apr 19975,2821,36517.882.08$97,285
Mar 19975,7281,40318.951.94$111,266
Feb 19975,1601,25520.492.21$108,497
Jan 19975,6521,11823.483.54$136,666
Dec 19965,8421,33223.32$136,235
Nov 19965,5431,30621.97$121,780
Oct 19965,7051,18323.31$132,984
Sep 19965,7401,62922.22$127,543
Aug 19965,5941,62620.26$113,334
Jul 19965,9111,86519.55$115,560
Jun 19965,9051,92418.73$110,601
May 19965,7831,96619.43$112,364
Apr 19965,6382,50021.51$121,273
Mar 19966,2792,54919.38$121,687
Feb 19965,9732,29816.98$101,422
Jan 19966,2362,57217.07$106,449
Dec 19956,3652,72617.19$109,414
Nov 19956,3332,64016.00$101,328
Oct 19956,5622,78215.43$101,252
Sep 19956,4502,90316.18$104,361
Aug 19956,9263,42715.92$110,262
Jul 19956,7123,83615.24$102,291
Jun 19956,7373,65316.41$110,554
May 19957,1353,01417.56$125,291
Apr 19957,1022,81917.73$125,918
Mar 19957,8202,87516.44$128,561
Feb 19956,8042,43916.58$112,810
Jan 19957,6072,35215.92$121,103
Dec 19947,9342,92315.03$119,248
Nov 19947,7981,75015.90$123,988
Oct 19948,2851,02515.58$129,080
Sep 19947,3902,61915.29$112,993
Aug 19947,7923,63416.13$125,685
Jul 19948,0723,41317.56$141,744
Jun 19947,9593,26617.09$136,019
May 19948,3673,84215.88$132,868
Apr 19948,0433,48114.14$113,728
Mar 19948,6823,40512.46$108,178
Feb 19948,0352,90612.50$100,438
Jan 19948,9283,33812.66$113,028
Dec 19939,1633,44712.33$112,980
Nov 19938,9582,94114.49$129,801
Oct 19939,1301,93415.85$144,711
Sep 19938,8643,19515.03$133,226
Aug 19939,3603,34215.66$146,578
Jul 19939,4283,81415.46$145,757
Jun 19939,3202,87816.79$156,483
May 19939,7251,76017.68$171,938
Apr 19939,7173,62318.05$175,392
Mar 199310,2693,05418.14$186,280
Feb 19939,2861,78217.90$166,219
Jan 199310,5682,38016.93$178,916

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.

Mar 2025 — as filed, then multipliedworked
Oil                3,656 bbl  × $ 67.70 =   $247,511
Casinghead gas         0 Mcf  × $  4.27 =         $0

────────────────────────────────────────────────────
Month total                                 $247,511

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. 8A/O/4610 is the state's own key, not one this site invented.