HALFF ESTATE 26

Operated by PIONEER NATURAL RES. USA, INC. (P-5 665748) in the OLD UPLAND (BEND) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 7999District 7CField 67039500NGPA filingOilCasinghead gasSaveExport
Value, all time
$1.2 M
Jan 1993 – May 2026
Value, last 12 filed months
$0
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 13 leases and 14 wells, and the rule below applies to all of them.

Discovered
1974-11-07
as the register files it
Field class
Oil and gas
the register's own label
Between wells
no field rule filed
From a lease line
no field rule filed

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
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
OilDisposition27,823 bbl$1,015,640
Casinghead gasProduction46,299 Mcf$139,928
Total$1,155,568

15,015 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 31.3454, -102.0248. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.0 miles.

31.34544, -102.02484 · 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
10,355 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 10,355 ft.

Completions filed
Jan 2018
1 of 1 wells

1 well

42-46131423110,355 ftJan 2018

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 202600106.413.05$0
Apr 20260098.932.87$0
Mar 20260089.753.15$0
Feb 20260063.503.75$0
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 20250067.704.27$0
Feb 20250070.884.34$0
Jan 20250074.324.28$0
Dec 20240068.993.12$0
Nov 20240069.052.20$0
Oct 20240071.372.28$0
Sep 20240069.612.36$0
Aug 20240075.632.06$0
Jul 20240079.932.15$0
Jun 20240078.082.63$0
May 20240078.812.20$0
Apr 20240084.451.66$0
Mar 20240080.301.55$0
Feb 20240076.091.78$0
Jan 20240073.023.30$0
Dec 20230071.262.61$0
Nov 20230077.892.81$0
Oct 20230085.443.09$0
Sep 20230089.042.74$0
Aug 20230080.522.67$0
Jul 20230074.852.64$0
Jun 20230068.962.26$0
May 20230070.622.23$0
Apr 20230078.122.24$0
Mar 20230072.852.39$0
Feb 20230075.112.47$0
Jan 20230076.533.39$0
Dec 20220076.415.73$0
Nov 20220085.005.65$0
Oct 20220087.185.86$0
Sep 20220084.888.16$0
Aug 20220094.529.13$0
Jul 202200101.587.54$0
Jun 202200115.097.98$0
May 202200109.378.43$0
Apr 202200104.226.84$0
Mar 202200108.885.08$0
Feb 20220091.054.86$0
Jan 2022027181.844.54$1,230
Dec 20210071.323.90$0
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 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 201823065.382.90$1,504
Apr 20180063.842.90$0
Mar 20180061.222.79$0
Feb 201825061.782.77$1,545
Jan 20180062.874.01$0
Dec 2017666457.272.92$3,967
Nov 201706455.423.12$200
Oct 2017696849.292.98$3,604
Sep 201706447.523.09$198
Aug 201706445.373.00$192
Jul 201706443.873.09$198
Jun 2017726442.493.09$3,257
May 201706445.373.26$209
Apr 2017346447.933.21$1,835
Mar 201706446.772.98$191
Feb 2017686450.452.95$3,620
Jan 201708449.413.42$287
Dec 2016536448.763.72$2,823
Nov 201606442.492.64$169
Oct 2016466446.193.09$2,323
Sep 201606441.553.10$198
Aug 201606441.442.92$187
Jul 2016796441.622.92$3,475
Jun 201606445.352.69$172
May 2016011142.521.99$221
Apr 2016579536.561.99$2,273
Mar 2016012233.011.79$219
Feb 20164210526.472.06$1,328
Jan 20163911627.352.36$1,341
Dec 2015012432.362.00$248
Nov 2015666438.792.17$2,699
Oct 2015796443.552.43$3,596
Sep 2015010742.992.76$295
Aug 20159512940.162.87$4,186
Jul 2015012948.152.95$380
Jun 2015869056.152.88$5,088
May 20153712055.212.96$2,397
Apr 2015012449.822.71$336
Mar 20157210142.892.93$3,384
Feb 201508644.662.98$256
Jan 20158711943.433.10$4,147
Dec 2014011854.693.59$424
Nov 20146511570.464.25$5,069
Oct 2014766478.303.90$6,200
Sep 201406486.164.05$259
Aug 2014010189.394.04$408
Jul 20145211696.564.18$5,506
Jun 20146415398.164.74$7,007
May 2014012794.734.73$600
Apr 2014012695.944.81$606
Mar 20145412695.895.06$5,815
Feb 20147719197.406.19$8,682
Jan 2014021990.404.86$1,065
Dec 20139817691.824.35$9,765
Nov 201306488.853.74$239
Oct 2013947497.423.78$9,437
Sep 2013076104.113.72$283
Aug 20134874104.253.52$5,265
Jul 2013119129102.523.72$12,679
Jun 2013020194.403.93$791
May 20135017894.834.15$5,480
Apr 20136722093.964.28$7,237
Mar 2013021793.623.91$849
Feb 20133221491.233.42$3,651
Jan 20136421291.603.42$6,587
Dec 2012022886.773.42$780
Nov 2012020086.953.62$725
Oct 201212122089.383.40$11,563
Sep 2012019794.672.92$575
Aug 20127321792.662.91$7,395
Jul 2012876485.133.02$7,600
Jun 2012017179.822.52$431
May 20126817291.612.49$6,657
Apr 201246178101.652.00$5,031
Mar 20120152105.052.22$338
Feb 201271201101.102.57$7,695
Jan 2012016998.092.73$462
Dec 20118618396.873.24$8,924
Nov 201111418995.723.31$11,538
Oct 2011019384.983.65$704
Sep 20116517283.623.99$6,121
Aug 2011019283.404.15$797
Jul 20117519094.144.52$7,919
Jun 20117218592.904.64$7,547
May 20117618998.134.40$8,290
Apr 20111188105.964.33$921
Mar 20114219696.364.06$4,842
Feb 20117118585.644.18$6,854
Jan 20117520486.504.59$7,424
Dec 2010019585.734.35$848
Nov 20104419780.843.80$4,305
Oct 20106319778.103.51$5,612
Sep 20106319072.633.98$5,332
Aug 20107630773.684.42$6,956
Jul 2010020872.554.74$985
Jun 20104123070.364.91$4,014
May 20105919771.124.24$5,030
Apr 20107019281.694.12$6,510
Mar 20106319978.394.39$5,812
Feb 20105418473.585.44$4,975
Jan 20106619474.365.96$6,065
Dec 20096920271.445.48$6,037
Nov 20096619274.593.75$5,643
Oct 20095618572.544.11$4,823
Sep 200910819265.543.06$7,667
Aug 20093117367.423.22$2,647
Jul 20093718861.133.46$2,913
Jun 20095818066.163.90$4,538
May 20095518754.743.93$3,745
Apr 200911018446.773.59$5,805
Mar 20097018942.144.06$3,717
Feb 20092917032.814.63$1,739
Jan 200910917535.865.37$4,849
Dec 20085119137.105.98$3,034
Nov 200810018055.496.86$6,784
Oct 20084819575.246.92$4,961
Sep 200891158101.767.88$10,505
Aug 200849147114.228.48$6,844
Jul 2008107187131.0811.39$16,155
Jun 200849184131.3313.03$8,833
May 200841203123.1711.57$7,400
Apr 200885164110.3110.45$11,091
Mar 200868183101.909.66$8,698
Feb 2008015892.538.77$1,386
Jan 20089464590.388.21$13,788
Dec 20079219188.337.30$9,521
Nov 200710735291.677.29$12,375
Oct 20075618382.856.92$5,906
Sep 20077518375.846.24$6,831
Aug 20078519569.066.39$7,116
Jul 20076619070.906.39$5,893
Jun 2007816462.007.55$5,505
May 200713415158.747.85$9,056
Apr 20072006459.617.81$12,422
Mar 200706456.927.30$467
Feb 200706455.108.22$526
Jan 20071766450.306.73$9,283
Dec 200606456.656.92$443
Nov 20061716454.207.62$9,756
Oct 200606454.906.01$385
Sep 20061766460.085.04$10,896
Aug 20061776468.717.34$12,631
Jul 200606469.376.34$406
Jun 20063516866.286.38$23,698
May 200606866.016.42$437
Apr 200606864.397.36$501
Mar 200606856.707.08$482
Feb 20061796857.597.75$10,836
Jan 200606860.598.93$607
Dec 20051786854.9413.42$10,692
Nov 20051796854.6910.59$10,510
Oct 200506858.3413.80$938
Sep 20051766861.4512.08$11,637
Aug 20051766861.519.80$11,492
Jul 20051766855.697.84$10,335
Jun 200506852.337.38$502
May 20051846845.226.65$8,773
Apr 200506849.207.36$501
Mar 200506850.377.15$487
Feb 200506845.226.31$429
Jan 20053456843.166.32$15,320
Dec 200406839.866.75$459
Nov 200406845.286.33$430
Oct 200406849.706.52$443
Sep 20043636843.245.28$16,055
Aug 200406842.375.55$377
Jul 200406838.286.08$414
Jun 20041796836.106.43$6,899
May 200406837.486.49$442
Apr 20043686834.475.86$13,083
Mar 200406834.365.53$376
Feb 200406832.455.51$375
Jan 20041846832.036.30$6,322
Dec 200306830.266.30$429
Nov 20031846828.804.60$5,612
Oct 200306828.174.76$324
Sep 20031816826.314.75$5,085
Aug 20031776829.765.13$5,616
Jul 200306829.415.17$352
Jun 20031796828.565.98$5,519
May 200306826.595.97$406
Apr 20031836826.675.41$5,248
Mar 20031816831.146.10$6,051
Feb 200306833.487.93$539
Jan 20031826830.315.58$5,896
Dec 200206826.914.85$330
Nov 20021866824.664.14$4,868
Oct 20021836826.464.23$5,130
Sep 200206827.443.64$247
Aug 20021886825.963.16$5,096
Jul 200206824.583.06$208
Jun 20021816823.733.34$4,522
May 200206824.663.58$244
Apr 20021806823.653.51$4,496
Mar 20023696822.003.10$8,329
Feb 200206818.222.38$162
Jan 200206817.172.38$162
Dec 20011806816.932.36$3,208
Nov 20011806818.072.41$3,416
Oct 200106819.782.53$172
Sep 20011816824.262.25$4,544
Aug 20011746824.873.05$4,535
Jul 200106823.933.20$217
Jun 200106824.563.82$260
May 20011796825.524.31$4,861
Apr 20011836824.685.34$4,879
Mar 200106824.545.38$366
Feb 20011816827.755.77$5,415
Jan 20011836827.478.40$5,598
Dec 200006826.889.12$620
Nov 20001786832.215.66$6,118
Oct 20001806831.235.15$5,971
Sep 200006831.875.19$353
Aug 20001796829.644.54$5,614
Jul 20001646828.534.09$4,957
Jun 20001876829.304.40$5,778
May 200006827.263.68$250
Apr 20001796824.513.12$4,599
Mar 20001866828.422.86$5,481
Feb 20001846827.622.73$5,267
Jan 200006825.272.48$169
Dec 19991916824.282.42$4,802
Nov 199906823.192.43$166
Oct 19991866820.982.80$4,093
Sep 19991856821.752.62$4,202
Aug 199906819.262.88$196
Jul 199918215417.892.37$3,621
Jun 199918815315.942.36$3,358
May 1999013215.792.32$306
Apr 199937015815.102.21$5,936
Mar 1999014212.471.84$261
Feb 19991811559.981.82$2,088
Jan 1999015110.381.90$287
Dec 19981871709.201.77$2,022
Nov 199818515410.892.19$2,351
Oct 1998012312.421.97$242
Sep 199818615312.592.08$2,660
Aug 199818315111.301.91$2,356
Jul 1998016311.742.24$365
Jun 199818115411.242.24$2,379
May 199818319412.622.21$2,737
Apr 199818617813.042.51$2,871
Mar 1998017312.802.31$400
Feb 199819016013.952.30$3,018
Jan 199818718214.702.15$3,141
Dec 199718714816.322.41$3,409
Nov 199718412818.193.09$3,742
Oct 1997018719.253.15$589
Sep 199718118917.742.95$3,769
Aug 199718417017.862.55$3,721
Jul 199718116517.582.25$3,553
Jun 1997018817.242.26$424
May 199718218018.972.31$3,868
Apr 199718417617.882.08$3,656
Mar 199718219418.951.94$3,825
Feb 1997017920.492.21$395
Jan 199717917823.483.54$4,833
Dec 199619318323.32$4,501
Nov 199619019421.97$4,174
Oct 199618420023.31$4,289
Sep 1996020222.22$0
Aug 199619332020.26$3,910
Jul 199618728519.55$3,656
Jun 199618836418.73$3,521
May 199618436519.43$3,575
Apr 1996028621.51$0
Mar 199619022419.38$3,682
Feb 199619433116.98$3,294
Jan 199619132617.07$3,260
Dec 199518335617.19$3,146
Nov 199517935916.00$2,864
Oct 1995039215.43$0
Sep 199518240216.18$2,945
Aug 199518732815.92$2,977
Jul 199518129115.24$2,758
Jun 199518131916.41$2,970
May 199518233517.56$3,196
Apr 1995025517.73$0
Mar 199518124916.44$2,976
Feb 1995028316.58$0
Jan 199518923315.92$3,009
Dec 199418425615.03$2,766
Nov 199418628915.90$2,957
Oct 199418532615.58$2,882
Sep 199418434515.29$2,813
Aug 199416732616.13$2,694
Jul 1994033217.56$0
Jun 199436632117.09$6,255
May 1994031815.88$0
Apr 199418331814.14$2,588
Mar 199418531412.46$2,305
Feb 199418129512.50$2,263
Jan 199418329112.66$2,317
Dec 199318229612.33$2,244
Nov 1993033014.49$0
Oct 199318136315.85$2,869
Sep 199317935615.03$2,690
Aug 199315936915.66$2,490
Jul 199317737315.46$2,736
Jun 199315836216.79$2,653
May 199317337717.68$3,059
Apr 199318233818.05$3,285
Mar 199318437018.14$3,338
Feb 199318333117.90$3,276
Jan 199318333716.93$3,098

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.

Jan 2022 — as filed, then multipliedworked
Oil                    0 bbl  × $ 81.84 =         $0
Casinghead gas       271 Mcf  × $  4.54 =     $1,230

────────────────────────────────────────────────────
Month total                                   $1,230

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. 7C/O/7999 is the state's own key, not one this site invented.