HALFMANN, DELBERT

Operated by XTO ENERGY INC. (P-5 945936) in the SAINT LAWRENCE (STRAWN) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Gas lease lease 147950District 08Field 79689700CondensateGasSaveExport
Value, all time
$2.3 M
Dec 1993 – May 2026
Value, last 12 filed months
$28 k
at the published price for each month
Months reported
390
no gaps in the span
Streams
2
condensate, 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 55 leases and 65 wells, and the rule below applies to all of them.

Discovered
1983-08-10
as the register files it
Field class
Oil and gas
the register's own label
Between wells
1,320 ft
minimum
From a lease line
660 ft
minimum

A drilling unit in this field needs at least 80 acres. The field rule took effect on 1991-03-01.

The Commission's schedule remark for this field reads: OPERATOR REQUEST (COSTILLA PETROLEUM CORP.)

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
CondensateDisposition3,915 bbl$164,220
GasProduction633,140 Mcf$2,164,835
Total$2,329,054

151,747 Mcf of this lease's gas, across 37 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 (1)

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 31.7493, -101.5568. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.0 miles.

31.74927, -101.55680 · 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
0.0%
0 of 1 wells
With a plug date
0.0%
0 of 1 wells
Median depth
10,100 ft
1 wells filed one
Completion to plug
no well filed both dates

What the state filed about each well

On the RRC proration schedule
00.0%
A plug date is filed
00.0%
BothOn the schedule and plugged. Neither fact cancels the other.
00.0%
NeitherNo plug date, and not on the schedule.
1100.0%

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

The one well that filed a depth was drilled to 10,100 ft.

Completions filed
Dec 1993
1 of 1 wells

1 well

42-17331839110,100 ftDec 1993

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 (390)

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

390 months

May 20260530106.413.05$1,614
Apr 2026032098.932.87$918
Mar 20260089.753.15$0
Feb 202603963.503.75$146
Jan 2026055159.138.00$4,407
Dec 2025054256.664.41$2,392
Nov 2025053758.593.93$2,109
Oct 2025053859.383.30$1,778
Sep 2025050362.743.08$1,548
Aug 202512255563.933.01$9,473
Jul 2025055966.743.32$1,853
Jun 2025060366.483.13$1,887
May 2025013960.553.23$449
Apr 2025011762.363.54$415
Mar 2025038567.704.27$1,643
Feb 2025049770.884.34$2,157
Jan 2025055474.324.28$2,370
Dec 2024057668.993.12$1,798
Nov 2024055269.052.20$1,214
Oct 2024056771.372.28$1,294
Sep 2024058569.612.36$1,383
Aug 2024058275.632.06$1,201
Jul 2024060279.932.15$1,292
Jun 2024058678.082.63$1,544
May 2024038878.812.20$853
Apr 2024051284.451.66$850
Mar 2024054080.301.55$834
Feb 2024061776.091.78$1,101
Jan 2024026773.023.30$880
Dec 202307771.262.61$201
Nov 2023083577.892.81$2,344
Oct 2023021385.443.09$658
Sep 20230089.042.74$0
Aug 20230080.522.67$0
Jul 202305274.852.64$137
Jun 2023012368.962.26$278
May 2023013770.622.23$305
Apr 2023020278.122.24$452
Mar 2023066772.852.39$1,596
Feb 2023128275.112.47$770
Jan 2023052776.533.39$1,785
Dec 2022028976.415.73$1,656
Nov 2022087785.005.65$4,952
Oct 202201,03987.185.86$6,092
Sep 202201,05184.888.16$8,580
Aug 2022099094.529.13$9,036
Jul 20220792101.587.54$5,973
Jun 20220657115.097.98$5,241
May 202201,014109.378.43$8,551
Apr 202201,172104.226.84$8,014
Mar 20220695108.885.08$3,528
Feb 2022033291.054.86$1,613
Jan 2022024981.844.54$1,130
Dec 2021011171.323.90$433
Nov 20210077.435.24$0
Oct 20210079.795.71$0
Sep 20210069.865.35$0
Aug 20210066.024.22$0
Jul 20210070.783.98$0
Jun 20210069.493.38$0
May 20210063.483.02$0
Apr 20210060.362.76$0
Mar 20210061.302.72$0
Feb 20210057.805.55$0
Jan 20210050.412.81$0
Dec 20200044.642.68$0
Nov 20200038.772.71$0
Oct 20200036.972.48$0
Sep 20200037.091.99$0
Aug 20200039.982.39$0
Jul 20200038.371.83$0
Jun 20200034.901.69$0
May 20200016.921.81$0
Apr 20200014.751.80$0
Mar 20200030.341.86$0
Feb 20200049.881.98$0
Jan 20200057.252.09$0
Dec 20190059.012.30$0
Nov 201974355.302.75$4,100
Oct 20190053.472.42$0
Sep 201901555.052.66$40
Aug 2019063553.112.30$1,463
Jul 2019072056.272.46$1,771
Jun 20190652.782.49$15
May 2019049158.482.74$1,346
Apr 2019037862.632.75$1,040
Mar 2019049956.803.06$1,528
Feb 2019060550.852.79$1,689
Jan 201910419446.033.23$5,413
Dec 2018040746.594.19$1,703
Nov 2018087952.934.24$3,725
Oct 201805661.443.40$190
Sep 2018021659.543.11$671
Aug 2018043159.403.07$1,322
Jul 2018053065.142.93$1,554
Jun 2018077860.183.08$2,394
May 201801,29165.382.90$3,745
Apr 201802263.842.90$64
Mar 20180061.222.79$0
Feb 20180061.782.77$0
Jan 20180062.874.01$0
Dec 2017045157.272.92$1,318
Nov 2017071255.423.12$2,220
Oct 2017089549.292.98$2,670
Sep 2017086947.523.09$2,683
Aug 2017090145.373.00$2,707
Jul 201701,07643.873.09$3,322
Jun 2017084542.493.09$2,609
May 2017071545.373.26$2,333
Apr 2017094147.933.21$3,022
Mar 2017088146.772.98$2,629
Feb 201701,02650.452.95$3,029
Jan 2017090849.413.42$3,104
Dec 2016035448.763.72$1,318
Nov 2016063242.492.64$1,671
Oct 2016087946.193.09$2,716
Sep 201601,17641.553.10$3,646
Aug 2016076441.442.92$2,234
Jul 201601,02341.622.92$2,992
Jun 201601,80245.352.69$4,840
May 2016057642.521.99$1,147
Apr 2016067136.561.99$1,336
Mar 201601,21233.011.79$2,174
Feb 201601,30126.472.06$2,685
Jan 201601,52427.352.36$3,603
Dec 201501,85332.362.00$3,709
Nov 201501,11638.792.17$2,419
Oct 2015068143.552.43$1,653
Sep 201501,82842.992.76$5,042
Aug 201501,82140.162.87$5,231
Jul 201502,00348.152.95$5,899
Jun 201501,99856.152.88$5,760
May 201502,03455.212.96$6,011
Apr 201501,80449.822.71$4,883
Mar 201501,83642.892.93$5,388
Feb 201501,79944.662.98$5,354
Jan 201501,76543.433.10$5,473
Dec 20141762,00754.693.59$16,833
Nov 201401,92870.464.25$8,198
Oct 201401,78378.303.90$6,955
Sep 201401,71486.164.05$6,934
Aug 201401,79889.394.04$7,255
Jul 201401,83696.564.18$7,674
Jun 201402,05998.164.74$9,753
May 201402,18994.734.73$10,346
Apr 201402,00595.944.81$9,642
Mar 201402,22195.895.06$11,231
Feb 201402,08397.406.19$12,898
Jan 201402,03890.404.86$9,906
Dec 2013016291.824.35$705
Nov 20131762,05988.853.74$23,335
Oct 201302,17997.423.78$8,235
Sep 201302,251104.113.72$8,369
Aug 201302,066104.253.52$7,278
Jul 201300102.523.72$0
Jun 201301,31994.403.93$5,188
May 201301,94594.834.15$8,070
Apr 201301,89793.964.28$8,124
Mar 201301,92593.623.91$7,532
Feb 201301,81991.233.42$6,221
Jan 201301,45391.603.42$4,969
Dec 201201,76086.773.42$6,019
Nov 201201,97086.953.62$7,141
Oct 201202,05389.383.40$6,980
Sep 201201,90794.672.92$5,565
Aug 201201,97092.662.91$5,729
Jul 201202,00985.133.02$6,069
Jun 201201,95779.822.52$4,930
May 201202,02391.612.49$5,034
Apr 201201,878101.652.00$3,750
Mar 201202,042105.052.22$4,537
Feb 201201,529101.102.57$3,930
Jan 201201,52298.092.73$4,161
Dec 201101,60296.873.24$5,190
Nov 20112281,56295.723.31$26,996
Oct 201101,62584.983.65$5,929
Sep 201101,55483.623.99$6,194
Aug 201101,61783.404.15$6,709
Jul 201101,62794.144.52$7,350
Jun 201101,47192.904.64$6,825
May 201101,72998.134.40$7,616
Apr 201101,377105.964.33$5,967
Mar 201101,63996.364.06$6,650
Feb 201101,63085.644.18$6,813
Jan 201101,69886.504.59$7,792
Dec 201001,71185.734.35$7,439
Nov 201001,63280.843.80$6,194
Oct 201001,28078.103.51$4,491
Sep 201001,50072.633.98$5,969
Aug 201001,30573.684.42$5,767
Jul 201001,53072.554.74$7,247
Jun 201001,31270.364.91$6,442
May 20102361,76271.124.24$24,247
Apr 201001,28081.694.12$5,277
Mar 201002,06678.394.39$9,067
Feb 201001,81173.585.44$9,856
Jan 201001,92874.365.96$11,499
Dec 200901,90371.445.48$10,436
Nov 200901,79474.593.75$6,730
Oct 200901,83972.544.11$7,559
Sep 2009058565.543.06$1,793
Aug 2009080767.423.22$2,597
Jul 200901,47561.133.46$5,110
Jun 200901,55166.163.90$6,041
May 200901,82754.743.93$7,172
Apr 200901,45446.773.59$5,216
Mar 200901,73542.144.06$7,042
Feb 200901,70332.814.63$7,890
Jan 200901,94435.865.37$10,441
Dec 200801,88237.105.98$11,249
Nov 20081641,93555.496.86$22,375
Oct 200801,80675.246.92$12,501
Sep 200801,524101.767.88$12,005
Aug 200801,971114.228.48$16,720
Jul 200802,024131.0811.39$23,052
Jun 200802,005131.3313.03$26,130
May 200802,103123.1711.57$24,341
Apr 200802,077110.3110.45$21,715
Mar 200802,170101.909.66$20,971
Feb 200802,05192.538.77$17,988
Jan 200802,20490.388.21$18,085
Dec 200702,22588.337.30$16,247
Nov 20071532,16591.677.29$29,812
Oct 200702,25882.856.92$15,630
Sep 200702,21275.846.24$13,812
Aug 200702,31069.066.39$14,756
Jul 200702,28770.906.39$14,609
Jun 200702,25062.007.55$16,984
May 200702,36458.747.85$18,549
Apr 200702,32359.617.81$18,131
Mar 20071201,60756.927.30$18,565
Feb 200701,12455.108.22$9,235
Jan 200701,25750.306.73$8,456
Dec 200601,39056.656.92$9,617
Nov 200601,51754.207.62$11,556
Oct 200601,71954.906.01$10,338
Sep 200601,67960.085.04$8,457
Aug 200601,79368.717.34$13,160
Jul 200601,85969.376.34$11,791
Jun 200601,61166.286.38$10,284
May 200601,70466.016.42$10,948
Apr 200601,91664.397.36$14,103
Mar 200601,66156.707.08$11,765
Feb 200601,36357.597.75$10,565
Jan 200601,74860.598.93$15,615
Dec 200501,84854.9413.42$24,792
Nov 200501,95354.6910.59$20,679
Oct 200502,37458.3413.80$32,751
Sep 200501,87161.4512.08$22,600
Aug 20051602,24161.519.80$31,796
Jul 2005582,08555.697.84$19,584
Jun 200521,46852.337.38$10,940
May 200501,54445.226.65$10,269
Apr 200501,46249.207.36$10,761
Mar 200501,56450.377.15$11,190
Feb 200501,43845.226.31$9,077
Jan 200501,59343.166.32$10,071
Dec 200431,56839.866.75$10,705
Nov 200431,50445.286.33$9,657
Oct 200401,58749.706.52$10,339
Sep 200401,63043.245.28$8,613
Aug 200401,75942.375.55$9,764
Jul 200401,83438.286.08$11,158
Jun 200402,10336.106.43$13,529
May 200401,71437.486.49$11,132
Apr 200401,75934.475.86$10,305
Mar 200401,90834.365.53$10,552
Feb 200401,81632.455.51$10,005
Jan 200442,10532.036.30$13,389
Dec 200301,55330.266.30$9,786
Nov 200301,49428.804.60$6,865
Oct 200301,72028.174.76$8,187
Sep 20031471,78926.314.75$12,364
Aug 200301,87429.765.13$9,613
Jul 200301,93029.415.17$9,980
Jun 200301,93228.565.98$11,559
May 200302,01926.595.97$12,059
Apr 200302,05626.675.41$11,117
Mar 200302,07131.146.10$12,625
Feb 200301,96133.487.93$15,543
Jan 200302,15530.315.58$12,029
Dec 200202,19626.914.85$10,659
Nov 200202,06724.664.14$8,551
Oct 200201,14326.464.23$4,834
Sep 2002080727.443.64$2,934
Aug 2002096425.963.16$3,050
Jul 2002082524.583.06$2,526
Jun 2002091023.733.34$3,038
May 20021241,03524.663.58$6,767
Apr 2002095323.653.51$3,347
Mar 200201,07122.003.10$3,323
Feb 200201,13118.222.38$2,687
Jan 200201,26517.172.38$3,005
Dec 200101,32716.932.36$3,138
Nov 200101,10318.072.41$2,653
Oct 200101,05719.782.53$2,673
Sep 20010024.262.25$0
Aug 20011301,11124.873.05$6,625
Jul 200101,46923.933.20$4,697
Jun 2001041724.563.82$1,595
May 200101,12525.524.31$4,846
Apr 200101,28124.685.34$6,835
Mar 200101,40524.545.38$7,554
Feb 200101,45627.755.77$8,397
Jan 200101,17227.478.40$9,843
Dec 200001,37526.889.12$12,543
Nov 200001,30532.215.66$7,384
Oct 200001,62331.235.15$8,351
Sep 200001,74631.875.19$9,056
Aug 20000029.644.54$0
Jul 200001,79028.534.09$7,321
Jun 200001,73929.304.40$7,647
May 200001,27227.263.68$4,681
Apr 200001,52524.513.12$4,752
Mar 200002,20928.422.86$6,317
Feb 200002,63627.622.73$7,187
Jan 200002,87525.272.48$7,131
Dec 199902,93024.282.42$7,102
Nov 199902,90923.192.43$7,080
Oct 199903,00220.982.80$8,417
Sep 199902,97021.752.62$7,778
Aug 1999913,01019.262.88$10,408
Jul 199903,03917.892.37$7,210
Jun 199902,72215.942.36$6,430
May 199902,82415.792.32$6,555
Apr 199902,92215.102.21$6,452
Mar 199902,72912.471.84$5,017
Feb 199902,5209.981.82$4,581
Jan 199901,22910.381.90$2,335
Dec 199802,6359.201.77$4,673
Nov 19981922,95210.892.19$8,543
Oct 199803,11212.421.97$6,128
Sep 199803,00912.592.08$6,267
Aug 199803,04911.301.91$5,816
Jul 199803,23111.742.24$7,229
Jun 199803,08011.242.24$6,891
May 199803,01112.622.21$6,643
Apr 19980113.042.51$3
Mar 199803,21712.802.31$7,429
Feb 199802,18513.952.30$5,024
Jan 1998902,74214.702.15$7,231
Dec 199703,28616.322.41$7,923
Nov 199703,20318.193.09$9,892
Oct 199703,42019.253.15$10,772
Sep 199703,46717.742.95$10,245
Aug 199704,10617.862.55$10,490
Jul 199703,28617.582.25$7,383
Jun 199703,58817.242.26$8,099
May 19971433,50118.972.31$10,795
Apr 199738117.882.08$682
Mar 199703,33918.951.94$6,475
Feb 199703,04620.492.21$6,719
Jan 199702,58423.483.54$9,147
Dec 199603,46823.32$0
Nov 199603,46621.97$0
Oct 19963723,59523.31$8,671
Sep 199603,61522.22$0
Aug 199603,82220.26$0
Jul 199603,77419.55$0
Jun 199602,44718.73$0
May 199604,82519.43$0
Apr 199604,31921.51$0
Mar 199604,69219.38$0
Feb 199601,87416.98$0
Jan 19962753,56717.07$4,694
Dec 199503,56717.19$0
Nov 199505,10916.00$0
Oct 19953384,48115.43$5,215
Sep 199504,39716.18$0
Aug 199504,81215.92$0
Jul 199504,93015.24$0
Jun 199504,41416.41$0
May 199504,79817.56$0
Apr 199504,70417.73$0
Mar 199504,38116.44$0
Feb 199504,03016.58$0
Jan 199504,29915.92$0
Dec 199404,11615.03$0
Nov 199404,57915.90$0
Oct 199404,56315.58$0
Sep 199404,90015.29$0
Aug 19941094,84916.13$1,758
Jul 199404,86117.56$0
Jun 199405,01617.09$0
May 199403,38515.88$0
Apr 199401,46214.14$0
Mar 1994824,42912.46$1,022
Feb 199404,76012.50$0
Jan 199404,76412.66$0
Dec 199302,67712.33$0

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
Condensate             0 bbl  × $106.41 =         $0
Gas                  530 Mcf  × $  3.05 =     $1,614

────────────────────────────────────────────────────
Month total                                   $1,614

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/G/147950 is the state's own key, not one this site invented.