HEFNER, R. A.

Operated by OXY USA INC. (P-5 630591) in the SLAUGHTER field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 5909District 8AField 83991001OilCasinghead gasSave
Value, all time
$33.8 M
Jan 1993 – Aug 2016
Value, last 12 filed months
$293 k
at the published price for each month
Months reported
284
no gaps in the span
Streams
2
oil, casinghead gas

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
OilDisposition840,714 bbl$32,663,805
Casinghead gasProduction374,006 Mcf$1,175,357
Total$33,839,162

140,359 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 (10)

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 33.4687, -102.4936. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.4 miles.

33.46888, -102.49335 · 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
30.0%
3 of 10 wells
With a plug date
20.0%
2 of 10 wells
Median depth
5,062 ft
9 wells filed one
Completion to plug
13.1 years
median over 1 wells

What the state filed about each well

On the RRC proration schedule
330.0%
A plug date is filed
220.0%
BothOn the schedule and plugged. Neither fact cancels the other.
220.0%
NeitherNo plug date, and not on the schedule.
770.0%

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

0k
2k
4k
6k
8k
10k
12k
15k
20k+

Total depth in feet, 9 of 10 wells. Median 5,062 ft, with the middle half between 5,005 and 5,068 ft; the shallowest is 4,891 ft and the deepest 5,071 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

00s
10s
20s

Last completion by decade, 8 of 10 wells, Dec 2003 – Sep 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
Dec 2003 – Sep 2025
8 of 10 wells; 2 filed none
Plug dates filed
Mar 1999 – May 2021
2 of 10 wells; 8 filed none

Last completion to plug: a median of 13.1 years across the 1 well that filed both dates, with the middle half between 13.1 years and 13.1 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

10 wells

42-2190011315,068 ftMar 1999Yes
42-219000666
42-219001095W5,070 ftSep 2025
42-2190011045,062 ftMar 2025Yes
42-2190011225,071 ftOct 2024
42-219001113W5,066 ftOct 2022
42-2190006775,005 ftJan 2017
42-219018038H5,052 ftApr 2008May 2021Yes
42-2190006884,891 ftDec 2003
42-2190006994,905 ftDec 2003

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 (284)

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

284 months

Aug 20160041.442.92$0
Jul 20160041.622.92$0
Jun 20160045.352.69$0
May 20160042.521.99$0
Apr 2016961036.561.99$35,134
Mar 20161,094033.011.79$36,113
Feb 20161,130026.472.06$29,911
Jan 20161,442027.352.36$39,439
Dec 20151,286032.362.00$41,615
Nov 20151,377038.792.17$53,414
Oct 2015920043.552.43$40,066
Sep 2015411042.992.76$17,669
Aug 2015924040.162.87$37,108
Jul 20151,202048.152.95$57,876
Jun 20151,040056.152.88$58,396
May 20151,161055.212.96$64,099
Apr 2015978049.822.71$48,724
Mar 20151,186042.892.93$50,868
Feb 20151,107044.662.98$49,439
Jan 20151,243043.433.10$53,983
Dec 20141,352054.693.59$73,941
Nov 20141,204070.464.25$84,834
Oct 2014999078.303.90$78,222
Sep 2014937086.164.05$80,732
Aug 20141,372089.394.04$122,643
Jul 20141,740096.564.18$168,014
Jun 20141,528098.164.74$149,988
May 20141,713094.734.73$162,272
Apr 20141,612095.944.81$154,655
Mar 20141,701095.895.06$163,109
Feb 20141,511097.406.19$147,171
Jan 20141,868090.404.86$168,867
Dec 20131,617091.824.35$148,473
Nov 20131,738088.853.74$154,421
Oct 20131,805097.423.78$175,843
Sep 20131,8210104.113.72$189,584
Aug 20131,7400104.253.52$181,395
Jul 20131,8090102.523.72$185,459
Jun 20131,769094.403.93$166,994
May 20131,889094.834.15$179,134
Apr 20131,666093.964.28$156,537
Mar 20131,920093.623.91$179,750
Feb 20131,644091.233.42$149,982
Jan 20131,897091.603.42$173,765
Dec 20121,849086.773.42$160,438
Nov 20121,869086.953.62$162,510
Oct 20121,768089.383.40$158,024
Sep 20122,510094.672.92$237,622
Aug 20121,866092.662.91$172,904
Jul 20121,736085.133.02$147,786
Jun 20121,660079.822.52$132,501
May 20121,789091.612.49$163,890
Apr 20121,6640101.652.00$169,146
Mar 20121,8160105.052.22$190,771
Feb 20121,2190101.102.57$123,241
Jan 20121,890098.092.73$185,390
Dec 20112,137096.873.24$207,011
Nov 20111,742095.723.31$166,744
Oct 20111,479084.983.65$125,685
Sep 20111,738083.623.99$145,332
Aug 20111,967083.404.15$164,048
Jul 20112,326094.144.52$218,970
Jun 20112,275092.904.64$211,348
May 20112,361098.134.40$231,685
Apr 20112,0400105.964.33$216,158
Mar 20112,0721,16496.364.06$204,381
Feb 20111,82588085.644.18$159,971
Jan 20112,0951,12186.504.59$186,362
Dec 20102,0291,12785.734.35$178,846
Nov 20101,9001,01780.843.80$157,456
Oct 20102,1481,28078.103.51$172,250
Sep 20102,0341,10872.633.98$152,139
Aug 20102,1611,26973.684.42$164,831
Jul 20102,2661,22972.554.74$170,219
Jun 20102,1141,16370.364.91$154,452
May 20102,1841,27671.124.24$160,730
Apr 20102,1171,01281.694.12$177,110
Mar 20102,0091,01578.394.39$161,940
Feb 20101,94787473.585.44$148,017
Jan 20101,95228574.365.96$146,850
Dec 20092,06227671.445.48$148,823
Nov 20091,94471474.593.75$147,682
Oct 20092,18894772.544.11$162,610
Sep 20092,1671,04365.543.06$145,222
Aug 20092,3381,11667.423.22$161,220
Jul 20092,3461,08861.133.46$147,180
Jun 20092,2391,09066.163.90$152,378
May 20092,27485554.743.93$127,835
Apr 20092,17961146.773.59$104,104
Mar 20092,44357242.144.06$105,270
Feb 20092,07450232.814.63$70,374
Jan 20092,36345135.865.37$87,160
Dec 20082,27156337.105.98$87,619
Nov 20082,24980755.496.86$130,333
Oct 20082,3371,00675.246.92$182,799
Sep 20082,415995101.767.88$253,588
Aug 20082,2231,096114.228.48$263,208
Jul 20082,5331,336131.0811.39$347,242
Jun 20082,4571,386131.3313.03$340,741
May 20082,7861,538123.1711.57$360,953
Apr 20082,4271,114110.3110.45$279,369
Mar 20082,4981,274101.909.66$266,858
Feb 20082,4811,19792.538.77$240,065
Jan 20082,18093790.388.21$204,717
Dec 20072,3181,08488.337.30$212,664
Nov 20072,3501,12091.677.29$223,591
Oct 20072,4371,29382.856.92$210,856
Sep 20072,5651,18275.846.24$201,910
Aug 20072,6251,29769.066.39$189,568
Jul 20072,5361,31270.906.39$188,183
Jun 20072,6421,32962.007.55$173,836
May 20072,7221,26058.747.85$169,777
Apr 20072,5151,18259.617.81$159,145
Mar 20072,6611,23956.927.30$160,511
Feb 20072,2941,08755.108.22$135,330
Jan 20072,6931,15350.306.73$143,214
Dec 20062,6381,33356.656.92$158,665
Nov 20062,6941,21054.207.62$155,232
Oct 20062,8661,05854.906.01$163,706
Sep 20062,8941,04460.085.04$179,130
Aug 20062,9411,32768.717.34$211,816
Jul 20063,1251,33169.376.34$225,223
Jun 20062,9771,39066.286.38$206,189
May 20063,2271,46666.016.42$222,433
Apr 20062,9911,26164.397.36$201,872
Mar 20063,24392156.707.08$190,401
Feb 20062,97075257.597.75$176,871
Jan 20063,34480160.598.93$209,769
Dec 20053,07783054.9413.42$180,185
Nov 20053,1921,03754.6910.59$185,551
Oct 20053,3741,53558.3413.80$218,016
Sep 20053,1641,59761.4512.08$213,718
Aug 20053,3472,01061.519.80$225,566
Jul 20053,4772,36155.697.84$212,153
Jun 20053,4432,41452.337.38$197,990
May 20053,4441,78245.226.65$167,590
Apr 20053,5211,37449.207.36$183,347
Mar 20053,3551,37350.377.15$178,815
Feb 20052,9711,26445.226.31$142,327
Jan 20053,4891,55643.166.32$160,423
Dec 20043,2131,41039.866.75$137,589
Nov 20043,4911,29845.286.33$166,289
Oct 20043,5931,37349.706.52$187,517
Sep 20043,5771,53343.245.28$162,770
Aug 20043,8131,68542.375.55$170,910
Jul 20043,9391,62038.286.08$160,641
Jun 20043,8451,56436.106.43$148,866
May 20044,0861,51137.486.49$162,957
Apr 20043,9611,58034.475.86$145,792
Mar 20044,2032,57234.365.53$158,639
Feb 20044,0472,12032.455.51$143,006
Jan 20044,7572,31532.036.30$166,950
Dec 20035,0442,28030.266.30$166,999
Nov 20035,8302,94428.804.60$181,432
Oct 20032,8251,27328.174.76$85,639
Sep 20032,4291,17226.314.75$69,473
Aug 20032,6091,18429.765.13$83,717
Jul 20032,47996029.415.17$77,871
Jun 20032,41892628.565.98$74,598
May 20032,48491326.595.97$71,503
Apr 20032,5491,53126.675.41$76,260
Mar 20032,6922,07031.146.10$96,448
Feb 20032,1312,76833.487.93$93,285
Jan 20032,5992,66230.315.58$93,635
Dec 20022,7133,23826.914.85$88,723
Nov 20022,6702,57724.664.14$76,503
Oct 20022,7501,28426.464.23$78,195
Sep 20022,6501,15227.443.64$76,904
Aug 20022,5521,14225.963.16$69,863
Jul 20022,6501,28524.583.06$69,071
Jun 20022,5761,17123.733.34$65,038
May 20022,3831,01724.663.58$62,410
Apr 20022,4791,29223.653.51$63,166
Mar 20022,5231,50222.003.10$60,166
Feb 20022,3971,07118.222.38$46,218
Jan 20022,4961,21717.172.38$45,748
Dec 20012,6841,28816.932.36$48,485
Nov 20012,6971,18418.072.41$51,583
Oct 20012,9001,23519.782.53$60,485
Sep 20012,6991,17024.262.25$68,112
Aug 20012,6451,09924.873.05$69,137
Jul 20012,6961,06323.933.20$67,914
Jun 20012,65096424.563.82$68,770
May 20012,9931,41425.524.31$82,472
Apr 20012,7511,18624.685.34$74,222
Mar 20012,8201,22224.545.38$75,773
Feb 20012,4631,13227.755.77$74,877
Jan 20012,8341,35127.478.40$89,197
Dec 20002,9061,46226.889.12$91,450
Nov 20002,7561,39032.215.66$96,635
Oct 20002,9791,38631.235.15$100,166
Sep 20002,8911,30331.875.19$98,894
Aug 20002,7551,38729.644.54$87,956
Jul 20002,8841,25828.534.09$87,425
Jun 20003,0181,28529.304.40$94,078
May 20003,1511,19927.263.68$90,308
Apr 20002,9001,10924.513.12$74,535
Mar 20003,1031,23728.422.86$91,725
Feb 20002,9041,02527.622.73$83,003
Jan 20003,2691,17225.272.48$85,515
Dec 19993,2061,23624.282.42$80,837
Nov 19993,2691,26623.192.43$78,890
Oct 19992,8891,34020.982.80$64,368
Sep 19993,0851,49021.752.62$71,001
Aug 19993,1121,77119.262.88$65,030
Jul 19992,6651,41917.892.37$51,043
Jun 19993,1161,63515.942.36$53,531
May 19993,0441,52315.792.32$51,600
Apr 19993,0761,44215.102.21$49,632
Mar 19993,3681,46712.471.84$44,696
Feb 19992,9361,3339.981.82$31,724
Jan 19993,3941,11610.381.90$37,350
Dec 19983,3341,2009.201.77$32,801
Nov 19983,0721,01810.892.19$35,679
Oct 19983,34262812.421.97$42,744
Sep 19983,6511,26412.592.08$48,599
Aug 19983,3431,36711.301.91$40,383
Jul 19983,9971,58911.742.24$50,480
Jun 19983,4172,32111.242.24$43,600
May 19983,8032,27612.622.21$53,015
Apr 19983,7922,00613.042.51$54,473
Mar 19983,8382,26212.802.31$54,350
Feb 19983,5811,97213.952.30$54,489
Jan 19983,5861,92814.702.15$56,869
Dec 19974,0671,93716.322.41$71,044
Nov 19973,9821,93718.193.09$78,415
Oct 19973,9912,08419.253.15$83,391
Sep 19974,0711,87017.742.95$77,745
Aug 19974,0731,51817.862.55$76,622
Jul 19974,0741,56717.582.25$75,142
Jun 19974,1001,87217.242.26$74,909
May 19974,2711,89018.972.31$85,384
Apr 19974,2801,96317.882.08$80,615
Mar 19974,2621,96618.951.94$84,577
Feb 19974,0191,69520.492.21$86,088
Jan 19974,4361,84723.483.54$110,695
Dec 19964,4641,82323.32$104,100
Nov 19963,9081,56721.97$85,859
Oct 19964,6151,59423.31$107,576
Sep 19964,0571,92122.22$90,147
Aug 19964,3691,93120.26$88,516
Jul 19964,3821,94219.55$85,668
Jun 19964,6211,73318.73$86,551
May 19964,6171,55419.43$89,708
Apr 19964,5441,69121.51$97,741
Mar 19964,6061,83819.38$89,264
Feb 19964,3962,81816.98$74,644
Jan 19964,6282,27017.07$79,000
Dec 19954,7642,30517.19$81,893
Nov 19954,7072,46916.00$75,312
Oct 19955,0533,23615.43$77,968
Sep 19954,8033,17816.18$77,713
Aug 19955,1383,95815.92$81,797
Jul 19954,5985,20215.24$70,074
Jun 19954,7933,95816.41$78,653
May 19955,0003,50417.56$87,800
Apr 19954,8992,89717.73$86,859
Mar 19955,2332,82516.44$86,031
Feb 19954,8172,56016.58$79,866
Jan 19955,0173,35315.92$79,871
Dec 19945,3713,40515.03$80,726
Nov 19944,9513,21115.90$78,721
Oct 19945,6994,49915.58$88,790
Sep 19944,8643,67415.29$74,371
Aug 19945,1555,73316.13$83,150
Jul 19945,0185,47417.56$88,116
Jun 19945,1495,65917.09$87,996
May 19945,0853,98115.88$80,750
Apr 19945,1362,94114.14$72,623
Mar 19945,0803,15812.46$63,297
Feb 19944,5742,62712.50$57,175
Jan 19945,4912,51212.66$69,516
Dec 19935,4142,51112.33$66,755
Nov 19935,1162,26214.49$74,131
Oct 19935,4962,47315.85$87,112
Sep 19935,4793,04415.03$82,349
Aug 19935,4182,58215.66$84,846
Jul 19935,8442,05015.46$90,348
Jun 19935,6212,22216.79$94,377
May 19935,5913,45817.68$98,849
Apr 19935,7483,16418.05$103,751
Mar 19936,0232,89818.14$109,257
Feb 19935,4442,19017.90$97,448
Jan 19936,1112,50416.93$103,459

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.

Apr 2016 — as filed, then multipliedworked
Oil                  961 bbl  × $ 36.56 =    $35,134
Casinghead gas         0 Mcf  × $  1.99 =         $0

────────────────────────────────────────────────────
Month total                                  $35,134

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/5909 is the state's own key, not one this site invented.