HIRSCH ESTATE 517

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

Gas lease lease 138518District 04Field 078002002 tax incentive programmesCondensateGasSaveExport
Value, all time
$2.7 M
Jan 1993 – May 2026
Value, last 12 filed months
$30 k
at the published price for each month
Months reported
401
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 164 leases and 164 wells, and the rule below applies to all of them.

Discovered
1979-07-17
as the register files it
Field class
Gas
the register's own label
Between wells
1,200 ft
minimum
From a lease line
467 ft
minimum

A drilling unit in this field needs at least 40 acres. The field rule took effect on 2010-11-02.

The Commission's schedule remark for this field reads: STATEWIDE RULES. NO P-15 & PLAT.

Severance-tax incentive filings

Applications the operator filed to have this lease's gas taxed at a reduced state rate. A filing is an application, and this page never calls one a reduction that was granted.

ProgrammeFilingsWith an approval dateDatedDocket
High Cost Gas111991-09-04123595
NGPA1none

This says nothing about a royalty. A severance tax is charged to the operator. Whether a reduced rate reaches a royalty owner depends on the wording of the lease instrument, which is a private contract this site does not hold.

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
CondensateDisposition15,269 bbl$279,736
GasProduction1,450,161 Mcf$2,449,305
Total$2,729,041

702,024 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 (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 27.7672, -99.1146. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.0 miles.

27.76716, -99.11459 · 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
8,500 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 8,500 ft.

Completions filed
May 1991
1 of 1 wells

1 well

42-4793520348,500 ftMay 1991

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 2026091106.413.05$277
Apr 2026024798.932.87$709
Mar 2026079689.753.15$2,507
Feb 2026045863.503.75$1,718
Jan 2026071259.138.00$5,695
Dec 2025076456.664.41$3,372
Nov 2025076258.593.93$2,992
Oct 2025082959.383.30$2,740
Sep 2025077362.743.08$2,378
Aug 2025079063.933.01$2,382
Jul 2025081366.743.32$2,695
Jun 2025084466.483.13$2,641
May 2025098960.553.23$3,197
Apr 2025072662.363.54$2,572
Mar 2025090867.704.27$3,876
Feb 2025083370.884.34$3,616
Jan 2025076874.324.28$3,286
Dec 2024099668.993.12$3,109
Nov 2024097169.052.20$2,135
Oct 202401,20471.372.28$2,747
Sep 202401,25869.612.36$2,974
Aug 202401,08675.632.06$2,241
Jul 202401,18079.932.15$2,533
Jun 202401,26778.082.63$3,337
May 202401,44478.812.20$3,175
Apr 2024090684.451.66$1,503
Mar 2024088380.301.55$1,364
Feb 202401,12376.091.78$2,003
Jan 202401,91773.023.30$6,322
Dec 2023492771.262.61$2,705
Nov 202301,70277.892.81$4,778
Oct 202301,49685.443.09$4,619
Sep 202301,60689.042.74$4,392
Aug 2023080580.522.67$2,152
Jul 202371,58674.852.64$4,714
Jun 202301,83368.962.26$4,140
May 202301,99770.622.23$4,448
Apr 202311,69078.122.24$3,860
Mar 2023191,61972.852.39$5,259
Feb 202301,76975.112.47$4,362
Jan 202301,56676.533.39$5,305
Dec 202201,78976.415.73$10,249
Nov 202202,33585.005.65$13,184
Oct 202202,45987.185.86$14,419
Sep 202202,45784.888.16$20,058
Aug 202202,76094.529.13$25,191
Jul 202202,794101.587.54$21,073
Jun 202203,198115.097.98$25,511
May 202203,396109.378.43$28,639
Apr 202203,051104.226.84$20,862
Mar 202203,675108.885.08$18,656
Feb 202203,81591.054.86$18,536
Jan 202203,48481.844.54$15,809
Dec 202103,65571.323.90$14,251
Nov 202103,51677.435.24$18,413
Oct 2021173,57379.795.71$21,772
Sep 202104,68969.865.35$25,090
Aug 202105,20966.024.22$21,985
Jul 202105,79070.783.98$23,056
Jun 2021365,37869.493.38$20,683
May 2021226,83363.483.02$22,016
Apr 202106,41060.362.76$17,681
Mar 202107,42561.302.72$20,173
Feb 2021126,10957.805.55$34,586
Jan 2021337,13150.412.81$21,704
Dec 202008,25444.642.68$22,083
Nov 202049,48738.772.71$25,832
Oct 20204010,41736.972.48$27,297
Sep 2020010,92337.091.99$21,748
Aug 2020912,52839.982.39$30,240
Jul 20201612,05038.371.83$22,607
Jun 202003,92234.901.69$6,629
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 20190055.302.75$0
Oct 20190053.472.42$0
Sep 20190055.052.66$0
Aug 20190053.112.30$0
Jul 20190056.272.46$0
Jun 20190052.782.49$0
May 20190058.482.74$0
Apr 20190062.632.75$0
Mar 20190056.803.06$0
Feb 20190050.852.79$0
Jan 20190046.033.23$0
Dec 20180046.594.19$0
Nov 20180052.934.24$0
Oct 20180061.443.40$0
Sep 20180059.543.11$0
Aug 20180059.403.07$0
Jul 20180065.142.93$0
Jun 20180060.183.08$0
May 20180065.382.90$0
Apr 20180063.842.90$0
Mar 20180061.222.79$0
Feb 20180061.782.77$0
Jan 20180062.874.01$0
Dec 20170057.272.92$0
Nov 20170055.423.12$0
Oct 20170049.292.98$0
Sep 20170047.523.09$0
Aug 20170045.373.00$0
Jul 20170043.873.09$0
Jun 20170042.493.09$0
May 20170045.373.26$0
Apr 20170047.933.21$0
Mar 20170046.772.98$0
Feb 20170050.452.95$0
Jan 20170049.413.42$0
Dec 20160048.763.72$0
Nov 20160042.492.64$0
Oct 20160046.193.09$0
Sep 20160041.553.10$0
Aug 20160041.442.92$0
Jul 20160041.622.92$0
Jun 20160045.352.69$0
May 20160042.521.99$0
Apr 20160036.561.99$0
Mar 20160033.011.79$0
Feb 20160026.472.06$0
Jan 20160027.352.36$0
Dec 20150032.362.00$0
Nov 20150038.792.17$0
Oct 20150043.552.43$0
Sep 20150042.992.76$0
Aug 20150040.162.87$0
Jul 20150048.152.95$0
Jun 20150056.152.88$0
May 20150055.212.96$0
Apr 20150049.822.71$0
Mar 20150042.892.93$0
Feb 20150044.662.98$0
Jan 20150043.433.10$0
Dec 20140054.693.59$0
Nov 20140070.464.25$0
Oct 20140078.303.90$0
Sep 20140086.164.05$0
Aug 20140089.394.04$0
Jul 20140096.564.18$0
Jun 20140098.164.74$0
May 20140094.734.73$0
Apr 20140095.944.81$0
Mar 20140095.895.06$0
Feb 20140097.406.19$0
Jan 20140090.404.86$0
Dec 20130091.824.35$0
Nov 20130088.853.74$0
Oct 20130097.423.78$0
Sep 201300104.113.72$0
Aug 201300104.253.52$0
Jul 201300102.523.72$0
Jun 20130094.403.93$0
May 20130094.834.15$0
Apr 20130093.964.28$0
Mar 20130093.623.91$0
Feb 20130091.233.42$0
Jan 20130091.603.42$0
Dec 20120086.773.42$0
Nov 20120086.953.62$0
Oct 20120089.383.40$0
Sep 20120094.672.92$0
Aug 20120092.662.91$0
Jul 20120085.133.02$0
Jun 20120079.822.52$0
May 20120091.612.49$0
Apr 201200101.652.00$0
Mar 201200105.052.22$0
Feb 201200101.102.57$0
Jan 20120098.092.73$0
Dec 20110096.873.24$0
Nov 20110095.723.31$0
Oct 20110084.983.65$0
Sep 20110083.623.99$0
Aug 20110083.404.15$0
Jul 20110094.144.52$0
Jun 20110092.904.64$0
May 20110098.134.40$0
Apr 201100105.964.33$0
Mar 20110096.364.06$0
Feb 20110085.644.18$0
Jan 20110086.504.59$0
Dec 20100085.734.35$0
Nov 20100080.843.80$0
Oct 20100078.103.51$0
Sep 20100072.633.98$0
Aug 20100073.684.42$0
Jul 20100072.554.74$0
Jun 20100070.364.91$0
May 20100071.124.24$0
Apr 20100081.694.12$0
Mar 20100078.394.39$0
Feb 20100073.585.44$0
Jan 20100074.365.96$0
Dec 20090071.445.48$0
Nov 20090074.593.75$0
Oct 20090072.544.11$0
Sep 20090065.543.06$0
Aug 20090067.423.22$0
Jul 20090061.133.46$0
Jun 20090066.163.90$0
May 20090054.743.93$0
Apr 20090046.773.59$0
Mar 20090042.144.06$0
Feb 20090032.814.63$0
Jan 20090035.865.37$0
Dec 20080037.105.98$0
Nov 20080055.496.86$0
Oct 20080075.246.92$0
Sep 200800101.767.88$0
Aug 200800114.228.48$0
Jul 200800131.0811.39$0
Jun 200800131.3313.03$0
May 200800123.1711.57$0
Apr 200800110.3110.45$0
Mar 200800101.909.66$0
Feb 20080592.538.77$44
Jan 2008014190.388.21$1,157
Dec 20070088.337.30$0
Nov 20070091.677.29$0
Oct 20070082.856.92$0
Sep 20070075.846.24$0
Aug 20070069.066.39$0
Jul 20070070.906.39$0
Jun 20070062.007.55$0
May 20070058.747.85$0
Apr 20070059.617.81$0
Mar 20070056.927.30$0
Feb 20070055.108.22$0
Jan 20070050.306.73$0
Dec 20060056.656.92$0
Nov 20060054.207.62$0
Oct 20060054.906.01$0
Sep 20060060.085.04$0
Aug 20060068.717.34$0
Jul 20060069.376.34$0
Jun 20060066.286.38$0
May 20060066.016.42$0
Apr 20060064.397.36$0
Mar 20060056.707.08$0
Feb 20060357.597.75$23
Jan 20060560.598.93$45
Dec 20050254.9413.42$27
Nov 20050354.6910.59$32
Oct 200501958.3413.80$262
Sep 20050261.4512.08$24
Aug 20050061.519.80$0
Jul 20050255.697.84$16
Jun 20050152.337.38$7
May 20050045.226.65$0
Apr 20050149.207.36$7
Mar 20050050.377.15$0
Feb 200501645.226.31$101
Jan 200502343.166.32$145
Dec 200402839.866.75$189
Nov 200402745.286.33$171
Oct 200401549.706.52$98
Sep 200408043.245.28$423
Aug 2004010942.375.55$605
Jul 2004040438.286.08$2,458
Jun 200441,05636.106.43$6,938
May 200461,97537.486.49$13,052
Apr 2004142,66134.475.86$16,072
Mar 2004123,23534.365.53$18,302
Feb 2004163,00532.455.51$17,076
Jan 200481,24032.036.30$8,068
Dec 2003222,77230.266.30$18,134
Nov 200371,46328.804.60$6,924
Oct 2003999428.174.76$4,985
Sep 2003132,19726.314.75$10,776
Aug 2003234,56129.765.13$24,081
Jul 2003185,84429.415.17$30,748
Jun 2003284,68328.565.98$28,818
May 2003704,82526.595.97$30,679
Apr 2003692,34526.675.41$14,520
Mar 20031056,15831.146.10$40,809
Feb 2003212,18833.487.93$18,045
Jan 2003191,78730.315.58$10,551
Dec 2002181,83126.914.85$9,372
Nov 200202,68124.664.14$11,091
Oct 200203,38326.464.23$14,307
Sep 200204,63727.443.64$16,856
Aug 200205,74225.963.16$18,169
Jul 200206,47024.583.06$19,810
Jun 200233,79323.733.34$12,733
May 20021431,94924.663.58$10,512
Apr 20021963,53623.653.51$17,055
Mar 20021775,75222.003.10$21,741
Feb 2002402,80818.222.38$7,400
Jan 2002482,81117.172.38$7,502
Dec 200104,95416.932.36$11,713
Nov 200105,51218.072.41$13,259
Oct 200105,04219.782.53$12,751
Sep 200105,52424.262.25$12,436
Aug 200105,20024.873.05$15,876
Jul 200106,47123.933.20$20,688
Jun 200116,62624.563.82$25,363
May 2001206,50125.524.31$28,512
Apr 2001143,14524.685.34$17,125
Mar 2001442,65524.545.38$15,354
Feb 2001645,15327.755.77$31,494
Jan 200111312027.478.40$4,112
Dec 2000456,10826.889.12$56,930
Nov 2000252,59132.215.66$15,465
Oct 2000221531.235.15$764
Sep 2000424,86931.875.19$26,592
Aug 2000466,10129.644.54$29,067
Jul 2000346,30928.534.09$26,772
Jun 2000755,81129.304.40$27,750
May 2000827,30527.263.68$29,116
Apr 2000607,06924.513.12$23,498
Mar 200006,90128.422.86$19,735
Feb 200006,84927.622.73$18,674
Jan 200006,80925.272.48$16,890
Dec 199908,03424.282.42$19,472
Nov 199905,77223.192.43$14,049
Oct 1999108,21820.982.80$23,251
Sep 1999416,49121.752.62$17,891
Aug 1999336,12419.262.88$18,246
Jul 1999427,78517.892.37$19,220
Jun 1999398,57615.942.36$20,879
May 1999256,94215.792.32$16,507
Apr 199908,08515.102.21$17,852
Mar 199908,30312.471.84$15,264
Feb 199906,7199.981.82$12,214
Jan 199907,44510.381.90$14,145
Dec 199805,7379.201.77$10,174
Nov 199806,31410.892.19$13,801
Oct 199809,86112.421.97$19,418
Sep 199809,23612.592.08$19,235
Aug 199809,65811.301.91$18,421
Jul 1998010,55711.742.24$23,619
Jun 199809,23711.242.24$20,666
May 1998010,26112.622.21$22,639
Apr 1998012,27513.042.51$30,753
Mar 1998013,96312.802.31$32,247
Feb 1998013,11713.952.30$30,158
Jan 199806,96914.702.15$15,017
Dec 199706,67516.322.41$16,094
Nov 199706,84018.193.09$21,124
Oct 199708,18119.253.15$25,769
Sep 199707,05317.742.95$20,841
Aug 199709,29817.862.55$23,754
Jul 1997012,30917.582.25$27,658
Jun 1997010,45017.242.26$23,588
May 199705,51818.972.31$12,738
Apr 199704,24317.882.08$8,837
Mar 1997219,48818.951.94$18,797
Feb 199714011,65920.492.21$28,587
Jan 199718514,39023.483.54$55,280
Dec 199614511,10823.32$3,381
Nov 199613411,78921.97$2,944
Oct 199612110,55723.31$2,821
Sep 199626511,61722.22$5,888
Aug 199620010,83620.26$4,052
Jul 199626913,55119.55$5,259
Jun 199634515,43818.73$6,462
May 19961425,48919.43$2,759
Apr 19961014,88421.51$2,173
Mar 1996147,86719.38$271
Feb 1996106,59316.98$170
Jan 199685,02017.07$137
Dec 199563,08217.19$103
Nov 199542,68016.00$64
Oct 199542,61115.43$62
Sep 199531,50316.18$49
Aug 199554,62415.92$80
Jul 1995109,02515.24$152
Jun 19952611,76216.41$427
May 1995239,73417.56$404
Apr 19952911,01717.73$514
Mar 19953512,69716.44$575
Feb 19952811,30516.58$464
Jan 19953812,13015.92$605
Dec 1994419,07715.03$616
Nov 19945912,43615.90$938
Oct 19948216,31415.58$1,278
Sep 199411416,39015.29$1,743
Aug 199412317,95116.13$1,984
Jul 199417215,99617.56$3,020
Jun 199446216,15917.09$7,896
May 199475320,80815.88$11,958
Apr 199483622,96514.14$11,821
Mar 19941,02029,13012.46$12,709
Feb 199452320,31712.50$6,538
Jan 199473027,54812.66$9,242
Dec 199342620,10212.33$5,253
Nov 199310510,26514.49$1,521
Oct 199310815,77415.85$1,712
Sep 19939312,12015.03$1,398
Aug 19937413,20715.66$1,159
Jul 199312129,03015.46$1,871
Jun 199357021,92316.79$9,570
May 199361325,10117.68$10,838
Apr 199366221,09518.05$11,949
Mar 199384131,49818.14$15,256
Feb 19931,03929,75517.90$18,598
Jan 19931,20540,14416.93$20,401

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                   91 Mcf  × $  3.05 =       $277

────────────────────────────────────────────────────
Month total                                     $277

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. 04/G/138518 is the state's own key, not one this site invented.