HALFMAN, E. A. "B"

Operated by CARBURANTE EXPLORATION CO, LTD. (P-5 130787) in the HALFMAN (STRAWN) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 11150District 7CField 38170500NGPA filingOilCasinghead gasSaveExport
Value, all time
$808 k
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 7 leases and 11 wells, and the rule below applies to all of them.

Discovered
1969-09-26
as the register files it
Field class
Oil
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
OilDisposition20,152 bbl$808,373
Casinghead gasProduction21 Mcf$0
Total$808,373

21 Mcf of this lease's gas, across 21 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 (2)

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 31.3114, -100.2533. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.2 miles.

31.31144, -100.25332 · 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
50.0%
1 of 2 wells
With a plug date
50.0%
1 of 2 wells
Median depth
4,683 ft
2 wells filed one
Completion to plug
21 months
median over 1 well

What the state filed about each well

On the RRC proration schedule
150.0%
A plug date is filed
150.0%
BothOn the schedule and plugged. Neither fact cancels the other.
150.0%
NeitherNo plug date, and not on the schedule.
150.0%

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

Between 4,666 and 4,700 ft, median 4,683 ft, over the 2 wells that filed a depth.

Completions filed
Mar 1985 – Oct 1985
2 of 2 wells
Plug dates filed
Jul 1987
1 of 2 wells; 1 filed none

Last completion to plug: a median of 21 months across the 1 well that filed both dates, with the middle half between 21 months and 21 months. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

2 wells

42-451103911 B4,700 ftOct 1985Jul 1987Yes
42-451100062 B4,666 ftMar 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 (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 202448073.023.30$3,505
Dec 20230071.262.61$0
Nov 202353077.892.81$4,128
Oct 20230085.443.09$0
Sep 202355089.042.74$4,897
Aug 202352080.522.67$4,187
Jul 20230074.852.64$0
Jun 202352068.962.26$3,586
May 20230070.622.23$0
Apr 202340078.122.24$3,125
Mar 20230072.852.39$0
Feb 202340075.112.47$3,004
Jan 202339076.533.39$2,985
Dec 20220076.415.73$0
Nov 202241085.005.65$3,485
Oct 20220087.185.86$0
Sep 202242084.888.16$3,565
Aug 202240094.529.13$3,781
Jul 202200101.587.54$0
Jun 2022420115.097.98$4,834
May 2022410109.378.43$4,484
Apr 202200104.226.84$0
Mar 2022410108.885.08$4,464
Feb 202238091.054.86$3,460
Jan 202240081.844.54$3,274
Dec 20210071.323.90$0
Nov 202140077.435.24$3,097
Oct 202138079.795.71$3,032
Sep 202139069.865.35$2,725
Aug 20210066.024.22$0
Jul 202136070.783.98$2,548
Jun 202138069.493.38$2,641
May 202138063.483.02$2,412
Apr 202137060.362.76$2,233
Mar 202139061.302.72$2,391
Feb 20210057.805.55$0
Jan 202140050.412.81$2,016
Dec 202038044.642.68$1,696
Nov 202038038.772.71$1,473
Oct 202038036.972.48$1,405
Sep 202040037.091.99$1,484
Aug 202010039.982.39$400
Jul 202078038.371.83$2,993
Jun 202079034.901.69$2,757
May 20200016.921.81$0
Apr 20200014.751.80$0
Mar 20200030.341.86$0
Feb 202041049.881.98$2,045
Jan 20200057.252.09$0
Dec 201955059.012.30$3,246
Nov 201942055.302.75$2,323
Oct 201942053.472.42$2,246
Sep 20190055.052.66$0
Aug 201942053.112.30$2,231
Jul 201940056.272.46$2,251
Jun 201942052.782.49$2,217
May 201942058.482.74$2,456
Apr 20190062.632.75$0
Mar 201960056.803.06$3,408
Feb 201978050.852.79$3,966
Jan 20190046.033.23$0
Dec 201839046.594.19$1,817
Nov 20180052.934.24$0
Oct 201839061.443.40$2,396
Sep 201881059.543.11$4,823
Aug 20180059.403.07$0
Jul 201837065.142.93$2,410
Jun 20180060.183.08$0
May 201838065.382.90$2,484
Apr 201876063.842.90$4,852
Mar 20180061.222.79$0
Feb 201841061.782.77$2,533
Jan 201840062.874.01$2,515
Dec 20170057.272.92$0
Nov 201739055.423.12$2,161
Oct 201741049.292.98$2,021
Sep 201741047.523.09$1,948
Aug 201739045.373.00$1,769
Jul 20170043.873.09$0
Jun 201740042.493.09$1,700
May 201739045.373.26$1,769
Apr 201738047.933.21$1,821
Mar 201741046.772.98$1,918
Feb 20170050.452.95$0
Jan 201737049.413.42$1,828
Dec 201635048.763.72$1,707
Nov 20160042.492.64$0
Oct 201640046.193.09$1,848
Sep 201640041.553.10$1,662
Aug 201641041.442.92$1,699
Jul 20160041.622.92$0
Jun 201641045.352.69$1,859
May 201643042.521.99$1,828
Apr 201642036.561.99$1,536
Mar 201640033.011.79$1,320
Feb 201639026.472.06$1,032
Jan 201642027.352.36$1,149
Dec 201542032.362.00$1,359
Nov 20150038.792.17$0
Oct 201543043.552.43$1,873
Sep 201540042.992.76$1,720
Aug 201541040.162.87$1,647
Jul 201540048.152.95$1,926
Jun 201541056.152.88$2,302
May 201541055.212.96$2,264
Apr 201541049.822.71$2,043
Mar 201541042.892.93$1,758
Feb 20150044.662.98$0
Jan 201585043.433.10$3,692
Dec 20140054.693.59$0
Nov 201441070.464.25$2,889
Oct 201442078.303.90$3,289
Sep 201442086.164.05$3,619
Aug 201442089.394.04$3,754
Jul 201442096.564.18$4,056
Jun 201443098.164.74$4,221
May 201441094.734.73$3,884
Apr 201443095.944.81$4,125
Mar 20140095.895.06$0
Feb 201442097.406.19$4,091
Jan 201485090.404.86$7,684
Dec 20130091.824.35$0
Nov 201342088.853.74$3,732
Oct 201342097.423.78$4,092
Sep 201300104.113.72$0
Aug 2013370104.253.52$3,857
Jul 2013420102.523.72$4,306
Jun 201342094.403.93$3,965
May 201342094.834.15$3,983
Apr 201341093.964.28$3,852
Mar 201343093.623.91$4,026
Feb 201373091.233.42$6,660
Jan 20130091.603.42$0
Dec 201242086.773.42$3,644
Nov 201240086.953.62$3,478
Oct 201241089.383.40$3,665
Sep 201241094.672.92$3,881
Aug 201241092.662.91$3,799
Jul 201239085.133.02$3,320
Jun 201241079.822.52$3,273
May 201242091.612.49$3,848
Apr 201200101.652.00$0
Mar 2012860105.052.22$9,034
Feb 2012400101.102.57$4,044
Jan 201242098.092.73$4,120
Dec 201140096.873.24$3,875
Nov 201143095.723.31$4,116
Oct 201142084.983.65$3,569
Sep 201142083.623.99$3,512
Aug 201184083.404.15$7,006
Jul 20110094.144.52$0
Jun 201142092.904.64$3,902
May 201141098.134.40$4,023
Apr 2011380105.964.33$4,026
Mar 201141096.364.06$3,951
Feb 201142085.644.18$3,597
Jan 201139086.504.59$3,374
Dec 201040085.734.35$3,429
Nov 201044080.843.80$3,557
Oct 201042078.103.51$3,280
Sep 201041072.633.98$2,978
Aug 201040073.684.42$2,947
Jul 201042072.554.74$3,047
Jun 201042070.364.91$2,955
May 201043071.124.24$3,058
Apr 201042081.694.12$3,431
Mar 201083078.394.39$6,506
Feb 201043073.585.44$3,164
Jan 20100074.365.96$0
Dec 200942071.445.48$3,000
Nov 200940074.593.75$2,984
Oct 200941072.544.11$2,974
Sep 200941065.543.06$2,687
Aug 200940067.423.22$2,697
Jul 200941061.133.46$2,506
Jun 200939066.163.90$2,580
May 200942054.743.93$2,299
Apr 200938046.773.59$1,777
Mar 200941042.144.06$1,728
Feb 20090032.814.63$0
Jan 200986035.865.37$3,084
Dec 200842037.105.98$1,558
Nov 20080055.496.86$0
Oct 200873075.246.92$5,493
Sep 2008430101.767.88$4,376
Aug 200800114.228.48$0
Jul 2008420131.0811.39$5,505
Jun 2008410131.3313.03$5,385
May 2008420123.1711.57$5,173
Apr 2008840110.3110.45$9,266
Mar 2008430101.909.66$4,382
Feb 200842092.538.77$3,886
Jan 200843090.388.21$3,886
Dec 200741088.337.30$3,622
Nov 20070091.677.29$0
Oct 200740082.856.92$3,314
Sep 200784075.846.24$6,371
Aug 20070069.066.39$0
Jul 200783070.906.39$5,885
Jun 20070062.007.55$0
May 200781058.747.85$4,758
Apr 20070059.617.81$0
Mar 200783056.927.30$4,724
Feb 200740055.108.22$2,204
Jan 200741050.306.73$2,062
Dec 200641056.656.92$2,323
Nov 200643054.207.62$2,331
Oct 200640054.906.01$2,196
Sep 200642060.085.04$2,523
Aug 20060068.717.34$0
Jul 200640069.376.34$2,775
Jun 200641066.286.38$2,717
May 200641066.016.42$2,706
Apr 200642064.397.36$2,704
Mar 200643056.707.08$2,438
Feb 200640057.597.75$2,304
Jan 200680060.598.93$4,847
Dec 200543054.9413.42$2,362
Nov 200542054.6910.59$2,297
Oct 200542058.3413.80$2,450
Sep 200540061.4512.08$2,458
Aug 200541061.519.80$2,522
Jul 200539055.697.84$2,172
Jun 200542052.337.38$2,198
May 200540045.226.65$1,809
Apr 200541049.207.36$2,017
Mar 200579050.377.15$3,979
Feb 200540045.226.31$1,809
Jan 200542043.166.32$1,813
Dec 200441039.866.75$1,634
Nov 200440045.286.33$1,811
Oct 200442049.706.52$2,087
Sep 200483043.245.28$3,589
Aug 200442042.375.55$1,780
Jul 200439038.286.08$1,493
Jun 200441036.106.43$1,480
May 200482037.486.49$3,073
Apr 200440034.475.86$1,379
Mar 200442034.365.53$1,443
Feb 200441032.455.51$1,330
Jan 200481032.036.30$2,594
Dec 200342030.266.30$1,271
Nov 200340028.804.60$1,152
Oct 200340028.174.76$1,127
Sep 200378026.314.75$2,052
Aug 200339029.765.13$1,161
Jul 200380029.415.17$2,353
Jun 200341028.565.98$1,171
May 200341026.595.97$1,090
Apr 200337026.675.41$987
Mar 200379031.146.10$2,460
Feb 200341033.487.93$1,373
Jan 200340030.315.58$1,212
Dec 200281026.914.85$2,180
Nov 200241024.664.14$1,011
Oct 200242026.464.23$1,111
Sep 200240027.443.64$1,098
Aug 200237025.963.16$961
Jul 200240024.583.06$983
Jun 200239023.733.34$925
May 200241024.663.58$1,011
Apr 200238023.653.51$899
Mar 200240022.003.10$880
Feb 200242018.222.38$765
Jan 200240017.172.38$687
Dec 200140016.932.36$677
Nov 200140018.072.41$723
Oct 200141019.782.53$811
Sep 200141024.262.25$995
Aug 200140024.873.05$995
Jul 200141023.933.20$981
Jun 200140024.563.82$982
May 200182025.524.31$2,093
Apr 200140024.685.34$987
Mar 200183024.545.38$2,037
Feb 200138027.755.77$1,055
Jan 200140027.478.40$1,099
Dec 200042026.889.12$1,129
Nov 200042032.215.66$1,353
Oct 200040031.235.15$1,249
Sep 200075031.875.19$2,390
Aug 200040029.644.54$1,186
Jul 200040028.534.09$1,141
Jun 200041029.304.40$1,201
May 200040027.263.68$1,090
Apr 200079024.513.12$1,936
Mar 200039028.422.86$1,108
Feb 200039027.622.73$1,077
Jan 200038025.272.48$960
Dec 199984024.282.42$2,040
Nov 199982023.192.43$1,902
Oct 1999122020.982.80$2,560
Sep 199939021.752.62$848
Aug 1999115019.262.88$2,215
Jul 1999118017.892.37$2,111
Jun 199981015.942.36$1,291
May 1999120015.792.32$1,895
Apr 199982015.102.21$1,238
Mar 199980012.471.84$998
Feb 199911909.981.82$1,188
Jan 1999118010.381.90$1,225
Dec 19988209.201.77$754
Nov 199883010.892.19$904
Oct 1998122012.421.97$1,515
Sep 199882012.592.08$1,032
Aug 1998158011.301.91$1,785
Jul 199876011.742.24$892
Jun 199835011.242.24$393
May 199878012.622.21$984
Apr 1998116013.042.51$1,513
Mar 1998116012.802.31$1,485
Feb 1998114013.952.30$1,590
Jan 1998111014.702.15$1,632
Dec 1997152016.322.41$2,481
Nov 199738018.193.09$691
Oct 1997121019.253.15$2,329
Sep 199740017.742.95$710
Aug 199781017.862.55$1,447
Jul 1997107017.582.25$1,881
Jun 199783017.242.26$1,431
May 1997101018.972.31$1,916
Apr 1997102017.882.08$1,824
Mar 199769018.951.94$1,308
Feb 1997105020.492.21$2,151
Jan 1997102023.483.54$2,395
Dec 199699023.32$2,309
Nov 1996125021.97$2,746
Oct 1996135023.31$3,147
Sep 1996130022.22$2,889
Aug 1996109020.26$2,208
Jul 1996137019.55$2,678
Jun 1996130018.73$2,435
May 199666019.43$1,282
Apr 199668021.51$1,463
Mar 1996101019.38$1,957
Feb 1996101016.98$1,715
Jan 1996137017.07$2,339
Dec 1995100017.19$1,719
Nov 1995150016.00$2,400
Oct 1995136015.43$2,098
Sep 1995120016.18$1,942
Aug 1995125015.92$1,990
Jul 1995160015.24$2,438
Jun 1995106016.41$1,739
May 1995122017.56$2,142
Apr 1995164017.73$2,908
Mar 1995110016.44$1,808
Feb 1995116016.58$1,923
Jan 1995160015.92$2,547
Dec 1994123015.03$1,849
Nov 1994123015.90$1,956
Oct 1994123015.58$1,916
Sep 1994164115.29$2,508
Aug 1994120116.13$1,936
Jul 199446117.56$808
Jun 1994128117.09$2,188
May 1994114115.88$1,810
Apr 1994135114.14$1,909
Mar 1994151112.46$1,881
Feb 199471112.50$888
Jan 19940112.66$0
Dec 1993121112.33$1,492
Nov 1993117114.49$1,695
Oct 1993118115.85$1,870
Sep 1993111115.03$1,668
Aug 199376115.66$1,190
Jul 1993119115.46$1,840
Jun 1993137116.79$2,300
May 1993123117.68$2,175
Apr 199375118.05$1,354
Mar 199397118.14$1,760
Feb 1993123117.90$2,202
Jan 1993123116.93$2,082

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 2024 — as filed, then multipliedworked
Oil                   48 bbl  × $ 73.02 =     $3,505
Casinghead gas         0 Mcf  × $  3.30 =         $0

────────────────────────────────────────────────────
Month total                                   $3,505

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/11150 is the state's own key, not one this site invented.