COBB, TOM "B" R/A "B"

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

Oil lease lease 61806District 8AField 99343001Hydrogen sulphide fieldOilCasinghead gasSaveExport
Value, all time
$10.2 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 23 leases and 192 wells, and the rule below applies to all of them.

Discovered
1944-02-09
as the register files it
Field class
Oil
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 44 acres.

The register flags this field for hydrogen sulphide. That is a poisonous gas that occurs naturally in some formations. The flag is a property of the field as the Commission records it. It is not a measurement taken at this lease, and it is not a statement that gas is escaping anywhere.

The Commission's schedule remark for this field reads: UNITS ARE 44.25 ACRES

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
OilDisposition213,307 bbl$10,111,434
Casinghead gasProduction17,607 Mcf$66,429
Total$10,177,864

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 (4)

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 33.7332, -102.4478. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.8 miles.

33.73315, -102.44777 · 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
25.0%
1 of 4 wells
With a plug date
25.0%
1 of 4 wells
Median depth
4,703 ft
4 wells filed one
Completion to plug
46.8 years
median over 1 well

What the state filed about each well

On the RRC proration schedule
125.0%
A plug date is filed
125.0%
BothOn the schedule and plugged. Neither fact cancels the other.
125.0%
NeitherNo plug date, and not on the schedule.
375.0%

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 4,670 and 4,705 ft, median 4,703 ft, over the 4 wells that filed a depth.

Completions filed
Dec 1976 – Feb 2016
4 of 4 wells
Plug dates filed
Oct 2023
1 of 4 wells; 3 filed none

Last completion to plug: a median of 46.8 years across the 1 well that filed both dates, with the middle half between 46.8 years and 46.8 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

4 wells

42-21936660244,705 ftFeb 2016
42-21936662264,705 ftJul 2002
42-21932463234,670 ftJun 1978
42-21931835224,700 ftDec 1976Oct 2023Yes

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 202493078.812.20$7,329
Apr 2024314084.451.66$26,517
Mar 2024242080.301.55$19,433
Feb 2024247076.091.78$18,794
Jan 2024322073.023.30$23,512
Dec 2023424071.262.61$30,214
Nov 2023449077.892.81$34,973
Oct 2023159085.443.09$13,585
Sep 2023407089.042.74$36,239
Aug 2023440080.522.67$35,429
Jul 2023191074.852.64$14,296
Jun 2023387068.962.26$26,688
May 2023337070.622.23$23,799
Apr 2023285078.122.24$22,264
Mar 2023340072.852.39$24,769
Feb 2023190075.112.47$14,271
Jan 2023244076.533.39$18,673
Dec 2022268076.415.73$20,478
Nov 2022486085.005.65$41,310
Oct 20225649387.185.86$49,715
Sep 20224198684.888.16$36,267
Aug 202253611194.529.13$51,676
Jul 2022491230101.587.54$51,610
Jun 2022379193115.097.98$45,159
May 202219276109.378.43$21,640
Apr 202236584104.226.84$38,615
Mar 2022520164108.885.08$57,450
Feb 202258520691.054.86$54,265
Jan 202264720381.844.54$53,872
Dec 202135414971.323.90$25,828
Nov 2021427977.435.24$3,666
Oct 20210779.795.71$40
Sep 20217069.865.35$489
Aug 202117066.024.22$1,122
Jul 20210070.783.98$0
Jun 20210069.493.38$0
May 20210063.483.02$0
Apr 2021372960.362.76$2,313
Mar 202195961.302.72$712
Feb 2021304457.805.55$1,978
Jan 2021147150.412.81$905
Dec 202046044.642.68$2,053
Nov 20200038.772.71$0
Oct 202039036.972.48$1,442
Sep 202042037.091.99$1,558
Aug 202015039.982.39$600
Jul 202032038.371.83$1,228
Jun 202038034.901.69$1,326
May 202014016.921.81$237
Apr 202067014.751.80$988
Mar 2020134030.341.86$4,066
Feb 2020204049.881.98$10,176
Jan 202019510257.252.09$11,377
Dec 201924512959.012.30$14,755
Nov 201924310855.302.75$13,735
Oct 20192859653.472.42$15,471
Sep 201928014355.052.66$15,794
Aug 201924912253.112.30$13,506
Jul 201924914656.272.46$14,370
Jun 201927212152.782.49$14,658
May 201916610558.482.74$9,995
Apr 201915612762.632.75$10,120
Mar 201968056.803.06$3,862
Feb 20196310950.852.79$3,508
Jan 20191747546.033.23$8,251
Dec 20183499746.594.19$16,666
Nov 201848012552.934.24$25,936
Oct 201862714061.443.40$38,999
Sep 20187039159.543.11$42,139
Aug 201862010359.403.07$37,144
Jul 201827911165.142.93$18,500
Jun 201824210960.183.08$14,899
May 201829710365.382.90$19,717
Apr 20181579263.842.90$10,290
Mar 201816412461.222.79$10,386
Feb 20181353161.782.77$8,426
Jan 20181629062.874.01$10,546
Dec 20171876357.272.92$10,894
Nov 20171876555.423.12$10,566
Oct 20171838449.292.98$9,271
Sep 20171827547.523.09$8,880
Aug 201718912445.373.00$8,947
Jul 201718212743.873.09$8,376
Jun 201718210042.493.09$8,042
May 201720013345.373.26$9,508
Apr 20172179047.933.21$10,690
Mar 20172194846.772.98$10,386
Feb 20172735250.452.95$13,926
Jan 20173415949.413.42$17,051
Dec 20163434848.763.72$16,903
Nov 20163465542.492.64$14,847
Oct 20163848546.193.09$18,000
Sep 20164239641.553.10$17,873
Aug 201650316841.442.92$21,336
Jul 20163857741.622.92$16,249
Jun 20163278245.352.69$15,050
May 201640719742.521.99$17,698
Apr 201639516436.561.99$14,768
Mar 20164776033.011.79$15,853
Feb 20166135626.472.06$16,342
Jan 201672312327.352.36$20,065
Dec 201568812032.362.00$22,504
Nov 201584312938.792.17$32,980
Oct 201587615743.552.43$38,531
Sep 201592915742.992.76$40,371
Aug 201582815340.162.87$33,692
Jul 201576434548.152.95$37,803
Jun 201574615656.152.88$42,338
May 20158482755.212.96$46,898
Apr 2015875049.822.71$43,593
Mar 201596918042.892.93$42,089
Feb 201576713844.662.98$34,665
Jan 201574410143.433.10$32,625
Dec 20148899354.693.59$48,953
Nov 201481012370.464.25$57,596
Oct 201484611078.303.90$66,671
Sep 20148308286.164.05$71,845
Aug 201472114889.394.04$65,047
Jul 201486821896.564.18$84,725
Jun 201486821198.164.74$86,202
May 201489621194.734.73$85,875
Apr 201478616095.944.81$76,178
Mar 201493019395.895.06$90,154
Feb 201484017897.406.19$82,918
Jan 20141,06523290.404.86$97,404
Dec 201358418591.824.35$54,428
Nov 201360020888.853.74$54,088
Oct 201362017297.423.78$61,050
Sep 2013600150104.113.72$63,024
Aug 2013620209104.253.52$65,371
Jul 2013620171102.523.72$64,198
Jun 201360018094.403.93$57,348
May 201362018194.834.15$59,546
Apr 201360012593.964.28$56,911
Mar 201362111993.623.91$58,604
Feb 201350612491.233.42$46,586
Jan 201362012991.603.42$57,233
Dec 201262012386.773.42$54,218
Nov 201260017486.953.62$52,801
Oct 201262315589.383.40$56,211
Sep 201260016394.672.92$57,278
Aug 201261512192.662.91$57,338
Jul 201262018685.133.02$53,342
Jun 201260015379.822.52$48,277
May 201262112391.612.49$57,196
Apr 2012594151101.652.00$60,682
Mar 2012620139105.052.22$65,440
Feb 2012580154101.102.57$59,034
Jan 201262017498.092.73$61,292
Dec 201155218696.873.24$54,075
Nov 201148812095.723.31$47,109
Oct 201161521584.983.65$53,047
Sep 201160019583.623.99$50,949
Aug 201161417683.404.15$51,938
Jul 201162010994.144.52$58,859
Jun 201155218692.904.64$52,144
May 201161014998.134.40$60,516
Apr 2011588135105.964.33$62,889
Mar 2011612096.364.06$58,972
Feb 20115567785.644.18$47,938
Jan 201162011586.504.59$54,158
Dec 201062010585.734.35$53,609
Nov 201059016380.843.80$48,314
Oct 201060510678.103.51$47,622
Sep 20106007572.633.98$43,876
Aug 2010620073.684.42$45,682
Jul 201061718672.554.74$45,644
Jun 201060022770.364.91$43,331
May 201062018471.124.24$44,874
Apr 201060017081.694.12$49,715
Mar 201062020778.394.39$49,510
Feb 201056020773.585.44$42,331
Jan 201062018874.365.96$47,224
Dec 2009581071.445.48$41,507
Nov 2009570074.593.75$42,516
Oct 2009620072.544.11$44,975
Sep 2009600065.543.06$39,324
Aug 2009620067.423.22$41,800
Jul 2009617061.133.46$37,717
Jun 2009624066.163.90$41,284
May 2009734054.743.93$40,179
Apr 2009653046.773.59$30,541
Mar 2009417042.144.06$17,572
Feb 2009618032.814.63$20,277
Jan 2009685035.865.37$24,564
Dec 2008620037.105.98$23,002
Nov 2008620055.496.86$34,404
Oct 2008630075.246.92$47,401
Sep 20086450101.767.88$65,635
Aug 20087140114.228.48$81,553
Jul 20086440131.0811.39$84,416
Jun 20086940131.3313.03$91,143
May 20085390123.1711.57$66,389
Apr 20084540110.3110.45$50,081
Mar 20085420101.909.66$55,230
Feb 2008502092.538.77$46,450
Jan 2008573090.388.21$51,788
Dec 2007455088.337.30$40,190
Nov 2007484091.677.29$44,368
Oct 2007568082.856.92$47,059
Sep 2007558075.846.24$42,319
Aug 2007505069.066.39$34,875
Jul 2007529070.906.39$37,506
Jun 2007522062.007.55$32,364
May 2007516058.747.85$30,310
Apr 2007476059.617.81$28,374
Mar 2007468056.927.30$26,639
Feb 2007449055.108.22$24,740
Jan 2007617050.306.73$31,035
Dec 2006602056.656.92$34,103
Nov 2006551054.207.62$29,864
Oct 2006586054.906.01$32,171
Sep 2006633060.085.04$38,031
Aug 2006543068.717.34$37,310
Jul 2006507069.376.34$35,171
Jun 2006462066.286.38$30,621
May 2006456066.016.42$30,101
Apr 2006443064.397.36$28,525
Mar 2006452056.707.08$25,628
Feb 2006419057.597.75$24,130
Jan 2006492060.598.93$29,810
Dec 2005467054.9413.42$25,657
Nov 20050054.6910.59$0
Oct 2005481058.3413.80$28,062
Sep 2005493061.4512.08$30,295
Aug 2005474061.519.80$29,156
Jul 2005469055.697.84$26,119
Jun 2005480052.337.38$25,118
May 2005446045.226.65$20,168
Apr 2005479049.207.36$23,567
Mar 2005484050.377.15$24,379
Feb 2005440045.226.31$19,897
Jan 2005490043.166.32$21,148
Dec 2004531039.866.75$21,166
Nov 2004475045.286.33$21,508
Oct 2004635049.706.52$31,560
Sep 2004615043.245.28$26,593
Aug 2004692042.375.55$29,320
Jul 2004697038.286.08$26,681
Jun 2004710036.106.43$25,631
May 2004648037.486.49$24,287
Apr 2004634034.475.86$21,854
Mar 2004662034.365.53$22,746
Feb 2004626032.455.51$20,314
Jan 2004744032.036.30$23,830
Dec 2003744030.266.30$22,513
Nov 2003717028.804.60$20,650
Oct 2003761028.174.76$21,437
Sep 2003753026.314.75$19,811
Aug 2003796029.765.13$23,689
Jul 2003815029.415.17$23,969
Jun 2003809028.565.98$23,105
May 2003937026.595.97$24,915
Apr 2003981026.675.41$26,163
Mar 2003953031.146.10$29,676
Feb 2003878033.487.93$29,395
Jan 20031,234030.315.58$37,403
Dec 20021,347026.914.85$36,248
Nov 20021,217024.664.14$30,011
Oct 20021,342026.464.23$35,509
Sep 20021,256027.443.64$34,465
Aug 20021,250025.963.16$32,450
Jul 20021,157024.583.06$28,439
Jun 2002859023.733.34$20,384
May 20021,125024.663.58$27,743
Apr 2002778023.653.51$18,400
Mar 2002614022.003.10$13,508
Feb 2002692018.222.38$12,608
Jan 2002774017.172.38$13,290
Dec 2001685016.932.36$11,597
Nov 2001727018.072.41$13,137
Oct 2001762019.782.53$15,072
Sep 2001756024.262.25$18,341
Aug 2001775024.873.05$19,274
Jul 2001676023.933.20$16,177
Jun 2001733024.563.82$18,002
May 2001765025.524.31$19,523
Apr 2001714024.685.34$17,622
Mar 2001770024.545.38$18,896
Feb 2001693027.755.77$19,231
Jan 2001770027.478.40$21,152
Dec 2000764026.889.12$20,536
Nov 2000742032.215.66$23,900
Oct 2000710031.235.15$22,173
Sep 2000752031.875.19$23,966
Aug 2000733029.644.54$21,726
Jul 2000771028.534.09$21,997
Jun 2000704029.304.40$20,627
May 2000776027.263.68$21,154
Apr 2000678024.513.12$16,618
Mar 2000768028.422.86$21,827
Feb 2000714027.622.73$19,721
Jan 2000747025.272.48$18,877
Dec 1999754024.282.42$18,307
Nov 1999744023.192.43$17,253
Oct 1999757020.982.80$15,882
Sep 1999747021.752.62$16,247
Aug 1999713019.262.88$13,732
Jul 1999735017.892.37$13,149
Jun 1999652015.942.36$10,393
May 1999743015.792.32$11,732
Apr 1999724015.102.21$10,932
Mar 1999750012.471.84$9,353
Feb 199965509.981.82$6,537
Jan 1999733010.381.90$7,609
Dec 199869509.201.77$6,394
Nov 1998718010.892.19$7,819
Oct 1998748012.421.97$9,290
Sep 1998723012.592.08$9,103
Aug 1998746011.301.91$8,430
Jul 1998770011.742.24$9,040
Jun 1998732011.242.24$8,228
May 1998780012.622.21$9,844
Apr 1998730013.042.51$9,519
Mar 1998717012.802.31$9,178
Feb 1998659013.952.30$9,193
Jan 1998735014.702.15$10,805
Dec 1997754016.322.41$12,305
Nov 1997732018.193.09$13,315
Oct 1997759019.253.15$14,611
Sep 1997722017.742.95$12,808
Aug 1997746017.862.55$13,324
Jul 1997765017.582.25$13,449
Jun 1997730017.242.26$12,585
May 1997747018.972.31$14,171
Apr 1997607017.882.08$10,853
Mar 1997779018.951.94$14,762
Feb 1997653020.492.21$13,380
Jan 1997748023.483.54$17,563
Dec 1996724023.32$16,884
Nov 1996684021.97$15,027
Oct 1996838023.31$19,534
Sep 1996745022.22$16,554
Aug 1996744020.26$15,073
Jul 1996713019.55$13,939
Jun 1996680018.73$12,736
May 1996655019.43$12,727
Apr 1996637021.51$13,702
Mar 1996711019.38$13,779
Feb 1996660016.98$11,207
Jan 1996733017.07$12,512
Dec 1995747017.19$12,841
Nov 1995718016.00$11,488
Oct 1995777015.43$11,989
Sep 1995743016.18$12,022
Aug 1995731015.92$11,638
Jul 1995719015.24$10,958
Jun 1995719016.41$11,799
May 1995726017.56$12,749
Apr 1995686017.73$12,163
Mar 1995724016.44$11,903
Feb 1995674016.58$11,175
Jan 1995720015.92$11,462
Dec 1994722015.03$10,852
Nov 1994722015.90$11,480
Oct 1994724015.58$11,280
Sep 1994676115.29$10,336
Aug 1994694116.13$11,194
Jul 1994688117.56$12,081
Jun 1994641117.09$10,955
May 1994681115.88$10,814
Apr 1994630114.14$8,908
Mar 1994472112.46$5,881
Feb 1994398112.50$4,975
Jan 1994623112.66$7,887
Dec 1993498112.33$6,140
Nov 1993465114.49$6,738
Oct 1993563115.85$8,924
Sep 1993548115.03$8,236
Aug 1993603115.66$9,443
Jul 1993589115.46$9,106
Jun 1993567116.79$9,520
May 1993602117.68$10,643
Apr 1993561118.05$10,126
Mar 1993562118.14$10,195
Feb 1993475117.90$8,503
Jan 1993597116.93$10,107

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 2024 — as filed, then multipliedworked
Oil                   93 bbl  × $ 78.81 =     $7,329
Casinghead gas         0 Mcf  × $  2.20 =         $0

────────────────────────────────────────────────────
Month total                                   $7,329

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/61806 is the state's own key, not one this site invented.