DUVAL RANCH -59-

Operated by KILLAM OIL CO., LTD. (P-5 460054) in the GOVT. WELLS, SOUTH field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 1138District 04Field 36112001OilCasinghead gasSave
Value, all time
$37.4 M
Jan 1993 – May 2026
Value, last 12 filed months
$339 k
at the published price for each month
Months reported
401
no gaps in the span
Streams
2
oil, casinghead gas

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
OilDisposition797,736 bbl$37,406,957
Casinghead gasProduction21 Mcf$0
Total$37,406,957

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 (21)

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 27.8617, -98.6541. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.8 miles. 1 well has no surveyed location and is left out of it.

27.86089, -98.65466 · centre of 20 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
42.9%
9 of 21 wells
With a plug date
42.9%
9 of 21 wells
Median depth
2,270 ft
16 wells filed one
Completion to plug
26.8 years
median over 6 wells

What the state filed about each well

On the RRC proration schedule
942.9%
A plug date is filed
942.9%
BothOn the schedule and plugged. Neither fact cancels the other.
942.9%
NeitherNo plug date, and not on the schedule.
1257.1%

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

0k
2k
4k
6k
8k
10k
12k
15k
20k+

Total depth in feet, 16 of 21 wells. Median 2,270 ft, with the middle half between 2,232 and 2,338 ft; the shallowest is 2,200 ft and the deepest 8,312 ft. The median is published rather than the mean, because a single mis-keyed depth moves a mean and cannot move a median.

When they were last completed

30s
40s
50s
60s
70s
80s
90s
00s
10s
20s

Last completion by decade, 14 of 21 wells, Jun 1934 – Nov 2023. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Jun 1934 – Nov 2023
14 of 21 wells; 7 filed none
Plug dates filed
Apr 2002 – Nov 2024
9 of 21 wells; 12 filed none

Last completion to plug: a median of 26.8 years across the 6 wells that filed both dates, with the middle half between 19.8 years and 38.8 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

21 wells

42-1310584992,233 ftApr 2002Yes
42-13105853132,225 ftFeb 2011Yes
42-13180588112,235 ftFeb 2011Yes
42-131058477
42-131058488
42-131805875
42-1318058912
42-13139630312,526 ftNov 2023
42-13134795282,310 ftMay 2020
42-131383371W8,312 ftJun 2018
42-13105855152,203 ftJan 2010
42-13133868262,300 ftSep 1999Dec 2009Yes
42-1310584662,234 ftFeb 1992Dec 2010Yes
42-13135730292,340 ftNov 1981Nov 2024Yes
42-13134794272,309 ftMay 1980
42-13105854142,240 ftJan 1980
42-1318058522,337 ftDec 1979Aug 2002Yes
42-13133179252,608 ftJun 1979
42-13105850102,230 ftMar 1979Mar 2010Yes
42-13130435232,200 ftDec 1970Apr 2012Yes
42-131058444Jun 1934

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 20261560106.413.05$16,600
Apr 2026470098.932.87$46,497
Mar 2026321089.753.15$28,810
Feb 2026153063.503.75$9,716
Jan 2026324059.138.00$19,158
Dec 2025481056.664.41$27,253
Nov 2025318058.593.93$18,632
Oct 2025317059.383.30$18,823
Sep 2025318062.743.08$19,951
Aug 2025782063.933.01$49,993
Jul 2025626066.743.32$41,779
Jun 2025626066.483.13$41,616
May 2025802060.553.23$48,561
Apr 2025799062.363.54$49,826
Mar 2025634067.704.27$42,922
Feb 2025635070.884.34$45,009
Jan 2025634074.324.28$47,119
Dec 2024483068.993.12$33,322
Nov 2024322069.052.20$22,234
Oct 2024474071.372.28$33,829
Sep 2024468069.612.36$32,577
Aug 2024624075.632.06$47,193
Jul 2024789079.932.15$63,065
Jun 2024786078.082.63$61,371
May 2024945078.812.20$74,475
Apr 2024942084.451.66$79,552
Mar 2024952080.301.55$76,446
Feb 2024803076.091.78$61,100
Jan 2024644073.023.30$47,025
Dec 2023647071.262.61$46,105
Nov 2023627077.892.81$48,837
Oct 2023950085.443.09$81,168
Sep 2023799089.042.74$71,143
Aug 2023937080.522.67$75,447
Jul 2023635074.852.64$47,530
Jun 20231,432068.962.26$98,751
May 20231,418070.622.23$100,139
Apr 20231,412078.122.24$110,305
Mar 20231,556072.852.39$113,355
Feb 20231,110075.112.47$83,372
Jan 20231,260076.533.39$96,428
Dec 20221,873076.415.73$143,116
Nov 20221,575085.005.65$133,875
Oct 2022954087.185.86$83,170
Sep 20221,118084.888.16$94,896
Aug 2022960094.529.13$90,739
Jul 20221,5880101.587.54$161,309
Jun 20221,2640115.097.98$145,474
May 20221,2740109.378.43$139,337
Apr 20221,4160104.226.84$147,576
Mar 20221,4270108.885.08$155,372
Feb 20221,428091.054.86$130,019
Jan 20221,576081.844.54$128,980
Dec 20211,427071.323.90$101,774
Nov 20211,425077.435.24$110,338
Oct 2021943079.795.71$75,242
Sep 20211,109069.865.35$77,475
Aug 2021940066.024.22$62,059
Jul 20211,546070.783.98$109,426
Jun 20211,601069.493.38$111,253
May 20211,116063.483.02$70,844
Apr 20211,433060.362.76$86,496
Mar 20211,244061.302.72$76,257
Feb 20211,124057.805.55$64,967
Jan 20211,584050.412.81$79,849
Dec 20201,581044.642.68$70,576
Nov 20201,594038.772.71$61,799
Oct 20201,597036.972.48$59,041
Sep 20201,251037.091.99$46,400
Aug 20201,747039.982.39$69,845
Jul 20202,060038.371.83$79,042
Jun 20202,526034.901.69$88,157
May 20200016.921.81$0
Apr 20201,262014.751.80$18,615
Mar 20201,744030.341.86$52,913
Feb 20202,071049.881.98$103,301
Jan 20201,444057.252.09$82,669
Dec 20191,440059.012.30$84,974
Nov 20191,273055.302.75$70,397
Oct 20191,287053.472.42$68,816
Sep 20191,290055.052.66$71,015
Aug 20191,776053.112.30$94,323
Jul 20191,444056.272.46$81,254
Jun 20191,284052.782.49$67,770
May 20191,279058.482.74$74,796
Apr 2019789062.632.75$49,415
Mar 20191,281056.803.06$72,761
Feb 20191,121050.852.79$57,003
Jan 20191,600046.033.23$73,648
Dec 20181,603046.594.19$74,684
Nov 20181,292052.934.24$68,386
Oct 20181,271061.443.40$78,090
Sep 2018799059.543.11$47,572
Aug 20181,250059.403.07$74,250
Jul 20181,420065.142.93$92,499
Jun 2018471060.183.08$28,345
May 20180065.382.90$0
Apr 20181,121063.842.90$71,565
Mar 20181,621061.222.79$99,238
Feb 20181,142061.782.77$70,553
Jan 20181,269062.874.01$79,782
Dec 20171,296057.272.92$74,222
Nov 20171,300055.423.12$72,046
Oct 20171,454049.292.98$71,668
Sep 20171,464047.523.09$69,569
Aug 20171,124045.373.00$50,996
Jul 20171,448043.873.09$63,524
Jun 20171,617042.493.09$68,706
May 20171,299045.373.26$58,936
Apr 20171,769047.933.21$84,788
Mar 20171,471046.772.98$68,799
Feb 20171,622050.452.95$81,830
Jan 20171,457049.413.42$71,990
Dec 20161,316048.763.72$64,168
Nov 20161,460042.492.64$62,035
Oct 20161,630046.193.09$75,290
Sep 20161,438041.553.10$59,749
Aug 2016326041.442.92$13,509
Jul 20161,604041.622.92$66,758
Jun 20161,590045.352.69$72,107
May 20161,737042.521.99$73,857
Apr 20161,608036.561.99$58,788
Mar 20161,606033.011.79$53,014
Feb 20161,791026.472.06$47,408
Jan 20161,607027.352.36$43,951
Dec 20151,281032.362.00$41,453
Nov 20151,438038.792.17$55,780
Oct 20151,914043.552.43$83,355
Sep 20151,732042.992.76$74,459
Aug 20151,419040.162.87$56,987
Jul 20151,858048.152.95$89,463
Jun 20151,553056.152.88$87,201
May 20151,249055.212.96$68,957
Apr 20151,406049.822.71$70,047
Mar 20151,723042.892.93$73,899
Feb 20151,683044.662.98$75,163
Jan 20152,136043.433.10$92,766
Dec 20141,843054.693.59$100,794
Nov 20141,846070.464.25$130,069
Oct 20142,149078.303.90$168,267
Sep 20141,225086.164.05$105,546
Aug 20141,840089.394.04$164,478
Jul 20142,000096.564.18$193,120
Jun 20141,539098.164.74$151,068
May 20142,164094.734.73$204,996
Apr 20141,527095.944.81$146,500
Mar 20141,534095.895.06$147,095
Feb 20141,832097.406.19$178,437
Jan 20141,807090.404.86$163,353
Dec 20132,283091.824.35$209,625
Nov 20131,383088.853.74$122,880
Oct 20131,802097.423.78$175,551
Sep 20131,8630104.113.72$193,957
Aug 20131,8660104.253.52$194,531
Jul 20131,8510102.523.72$189,765
Jun 20131,535094.403.93$144,904
May 20132,013094.834.15$190,893
Apr 20131,851093.964.28$173,920
Mar 20131,578093.623.91$147,732
Feb 20132,025091.233.42$184,741
Jan 20131,863091.603.42$170,651
Dec 20122,347086.773.42$203,649
Nov 20121,404086.953.62$122,078
Oct 20121,712089.383.40$153,019
Sep 20121,713094.672.92$162,170
Aug 20122,024092.662.91$187,544
Jul 20121,847085.133.02$157,235
Jun 20121,754079.822.52$140,004
May 20122,019091.612.49$184,961
Apr 20121,8280101.652.00$185,816
Mar 20121,9840105.052.22$208,419
Feb 20121,7130101.102.57$173,184
Jan 20122,129098.092.73$208,834
Dec 20111,710096.873.24$165,648
Nov 20111,719095.723.31$164,543
Oct 20111,918084.983.65$162,992
Sep 20111,798083.623.99$150,349
Aug 20112,338083.404.15$194,989
Jul 20111,701094.144.52$160,132
Jun 20111,991092.904.64$184,964
May 20111,996098.134.40$195,867
Apr 20112,1300105.964.33$225,695
Mar 20112,443096.364.06$235,407
Feb 20111,522085.644.18$130,344
Jan 20112,474086.504.59$214,001
Dec 20102,002085.734.35$171,631
Nov 20102,134080.843.80$172,513
Oct 20102,017078.103.51$157,528
Sep 20102,276072.633.98$165,306
Aug 20101,983073.684.42$146,107
Jul 20102,290072.554.74$166,140
Jun 20102,401070.364.91$168,934
May 20102,281071.124.24$162,225
Apr 20101,996081.694.12$163,053
Mar 20102,318078.394.39$181,708
Feb 20101,936073.585.44$142,451
Jan 20102,139074.365.96$159,056
Dec 20092,131071.445.48$152,239
Nov 20092,135074.593.75$159,250
Oct 20091,858072.544.11$134,779
Sep 20092,464065.543.06$161,491
Aug 20092,382067.423.22$160,594
Jul 20092,158061.133.46$131,919
Jun 20092,036066.163.90$134,702
May 20092,191054.743.93$119,935
Apr 20092,236046.773.59$104,578
Mar 20092,347042.144.06$98,903
Feb 20092,052032.814.63$67,326
Jan 20092,544035.865.37$91,228
Dec 20082,231037.105.98$82,770
Nov 20082,217055.496.86$123,021
Oct 20082,741075.246.92$206,233
Sep 20082,2730101.767.88$231,300
Aug 20082,6060114.228.48$297,657
Jul 20082,6040131.0811.39$341,332
Jun 20082,2600131.3313.03$296,806
May 20082,9610123.1711.57$364,706
Apr 20082,7900110.3110.45$307,765
Mar 20082,4250101.909.66$247,108
Feb 20082,295092.538.77$212,356
Jan 20082,490090.388.21$225,046
Dec 20072,307088.337.30$203,777
Nov 20072,472091.677.29$226,608
Oct 20072,260082.856.92$187,241
Sep 20072,468075.846.24$187,173
Aug 20072,279069.066.39$157,388
Jul 20071,928070.906.39$136,695
Jun 20072,808062.007.55$174,096
May 20072,619058.747.85$153,840
Apr 20073,000059.617.81$178,830
Mar 20072,992056.927.30$170,305
Feb 20072,658055.108.22$146,456
Jan 20072,483050.306.73$124,895
Dec 20063,033056.656.92$171,819
Nov 20062,477054.207.62$134,253
Oct 20062,287054.906.01$125,556
Sep 20062,827060.085.04$169,846
Aug 20062,281068.717.34$156,728
Jul 20062,582069.376.34$179,113
Jun 20062,092066.286.38$138,658
May 20062,453066.016.42$161,923
Apr 20061,947064.397.36$125,367
Mar 20061,767056.707.08$100,189
Feb 20062,314057.597.75$133,263
Jan 20062,119060.598.93$128,390
Dec 20051,777054.9413.42$97,628
Nov 20052,291054.6910.59$125,295
Oct 20051,931058.3413.80$112,655
Sep 20052,268061.4512.08$139,369
Aug 20051,909061.519.80$117,423
Jul 20052,118055.697.84$117,951
Jun 20051,911052.337.38$100,003
May 20052,466045.226.65$111,513
Apr 20052,465049.207.36$121,278
Mar 20052,439050.377.15$122,852
Feb 20051,519045.226.31$68,689
Jan 20052,468043.166.32$106,519
Dec 20042,082039.866.75$82,989
Nov 20042,243045.286.33$101,563
Oct 20041,921049.706.52$95,474
Sep 20041,919043.245.28$82,978
Aug 20041,870042.375.55$79,232
Jul 20041,390038.286.08$53,209
Jun 20041,748036.106.43$63,103
May 20041,725037.486.49$64,653
Apr 20041,594034.475.86$54,945
Mar 20041,764034.365.53$60,611
Feb 20041,762032.455.51$57,177
Jan 20042,084032.036.30$66,751
Dec 20031,527030.266.30$46,207
Nov 20032,115028.804.60$60,912
Oct 20032,271028.174.76$63,974
Sep 20031,393026.314.75$36,650
Aug 20031,895029.765.13$56,395
Jul 20032,427029.415.17$71,378
Jun 20032,922028.565.98$83,452
May 20032,581026.595.97$68,629
Apr 20032,600026.675.41$69,342
Mar 20032,766031.146.10$86,133
Feb 20032,247033.487.93$75,230
Jan 20032,606030.315.58$78,988
Dec 20022,334026.914.85$62,808
Nov 20022,439024.664.14$60,146
Oct 20022,746026.464.23$72,659
Sep 20023,111027.443.64$85,366
Aug 20023,263025.963.16$84,707
Jul 20022,744024.583.06$67,448
Jun 20022,763023.733.34$65,566
May 20023,094024.663.58$76,298
Apr 20023,122023.653.51$73,835
Mar 20023,282022.003.10$72,204
Feb 20023,124018.222.38$56,919
Jan 20022,275017.172.38$39,062
Dec 20013,192016.932.36$54,041
Nov 20012,282018.072.41$41,236
Oct 20012,986019.782.53$59,063
Sep 20012,927024.262.25$71,009
Aug 20012,918024.873.05$72,571
Jul 20012,524023.933.20$60,399
Jun 20012,374024.563.82$58,305
May 20012,715025.524.31$69,287
Apr 20012,560024.685.34$63,181
Mar 20013,097024.545.38$76,000
Feb 20012,507027.755.77$69,569
Jan 20012,922027.478.40$80,267
Dec 20002,401026.889.12$64,539
Nov 20002,196032.215.66$70,733
Oct 20003,265031.235.15$101,966
Sep 20002,899031.875.19$92,391
Aug 20003,116029.644.54$92,358
Jul 20002,560028.534.09$73,037
Jun 20003,096029.304.40$90,713
May 20002,948027.263.68$80,362
Apr 20002,726024.513.12$66,814
Mar 20003,327028.422.86$94,553
Feb 20002,656027.622.73$73,359
Jan 20003,138025.272.48$79,297
Dec 19992,171024.282.42$52,712
Nov 19992,017023.192.43$46,774
Oct 19992,741020.982.80$57,506
Sep 1999352021.752.62$7,656
Aug 19990019.262.88$0
Jul 19990017.892.37$0
Jun 19990015.942.36$0
May 19990015.792.32$0
Apr 19990015.102.21$0
Mar 19990012.471.84$0
Feb 1999009.981.82$0
Jan 19990010.381.90$0
Dec 1998009.201.77$0
Nov 19980010.892.19$0
Oct 19980012.421.97$0
Sep 19980012.592.08$0
Aug 1998341011.301.91$3,853
Jul 1998186011.742.24$2,184
Jun 19981,961011.242.24$22,042
May 19983,117012.622.21$39,337
Apr 19982,730013.042.51$35,599
Mar 19983,297012.802.31$42,202
Feb 19982,158013.952.30$30,104
Jan 19982,935014.702.15$43,145
Dec 19973,274016.322.41$53,432
Nov 19972,970018.193.09$54,024
Oct 19973,112019.253.15$59,906
Sep 19972,768017.742.95$49,104
Aug 19973,273017.862.55$58,456
Jul 19972,380017.582.25$41,840
Jun 19973,117017.242.26$53,737
May 19973,555018.972.31$67,438
Apr 19972,822017.882.08$50,457
Mar 19973,099018.951.94$58,726
Feb 19972,909020.492.21$59,605
Jan 19973,600023.483.54$84,528
Dec 19963,437023.32$80,151
Nov 19963,073021.97$67,514
Oct 19963,310023.31$77,156
Sep 19962,845022.22$63,216
Aug 19963,326020.26$67,385
Jul 19963,016019.55$58,963
Jun 19963,132018.73$58,662
May 19963,631019.43$70,550
Apr 19963,153021.51$67,821
Mar 19963,697019.38$71,648
Feb 19963,305016.98$56,119
Jan 19962,507017.07$42,794
Dec 19953,881017.19$66,714
Nov 19953,273016.00$52,368
Oct 19953,799015.43$58,619
Sep 19953,374016.18$54,591
Aug 19953,827015.92$60,926
Jul 19953,281015.24$50,002
Jun 19953,717016.41$60,996
May 19953,952017.56$69,397
Apr 19953,388017.73$60,069
Mar 19953,777016.44$62,094
Feb 19953,235016.58$53,636
Jan 19953,406015.92$54,224
Dec 19943,747015.03$56,317
Nov 19943,079015.90$48,956
Oct 19943,251015.58$50,651
Sep 19943,425115.29$52,368
Aug 19943,037116.13$48,987
Jul 19942,685117.56$47,149
Jun 19942,658117.09$45,425
May 19943,231115.88$51,308
Apr 19943,376114.14$47,737
Mar 19943,719112.46$46,339
Feb 19943,097112.50$38,713
Jan 19943,412112.66$43,196
Dec 19933,288112.33$40,541
Nov 19933,859114.49$55,917
Oct 19933,725115.85$59,041
Sep 19933,783115.03$56,858
Aug 19934,292115.66$67,213
Jul 19933,650115.46$56,429
Jun 19933,939116.79$66,136
May 19934,074117.68$72,028
Apr 19933,740118.05$67,507
Mar 19933,979118.14$72,179
Feb 19933,821117.90$68,396
Jan 19934,131116.93$69,938

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
Oil                  156 bbl  × $106.41 =    $16,600
Casinghead gas         0 Mcf  × $  3.05 =         $0

────────────────────────────────────────────────────
Month total                                  $16,600

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/O/1138 is the state's own key, not one this site invented.