DUVAL RANCH SEC. 578

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

Oil lease lease 8767District 04Field 81136001OilCasinghead gasSaveExport
Value, all time
$1.8 M
Jan 1993 – May 2026
Value, last 12 filed months
$29 k
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 19 leases and 55 wells, and the rule below applies to all of them.

Discovered
1949-10-25
as the register files it
Field class
Oil and gas
the register's own label
Between wells
660 ft
minimum
From a lease line
330 ft
minimum

A drilling unit in this field needs at least 0 acres. The field rule took effect on 1989-06-15.

The Commission's schedule remark for this field reads: ALLOCATION FORMULA EFFECTIVE 04/01/98.

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
OilDisposition51,212 bbl$1,792,248
Casinghead gasProduction21 Mcf$0
Total$1,792,248

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 27.7711, -98.6796. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.2 miles.

27.77111, -98.67957 · 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
75.0%
3 of 4 wells
With a plug date
50.0%
2 of 4 wells
Median depth
2,560 ft
3 wells filed one
Completion to plug
31.9 years
median over 2 wells

What the state filed about each well

On the RRC proration schedule
375.0%
A plug date is filed
250.0%
BothOn the schedule and plugged. Neither fact cancels the other.
250.0%
NeitherNo plug date, and not on the schedule.
125.0%

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 2,324 and 2,575 ft, median 2,560 ft, over the 3 wells that filed a depth.

Completions filed
Jul 1976 – Mar 1978
2 of 4 wells; 2 filed none
Plug dates filed
Mar 2008 – Apr 2010
2 of 4 wells; 2 filed none

Last completion to plug: a median of 31.9 years across the 2 wells that filed both dates, with the middle half between 30.9 years and 32.8 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

4 wells

42-131106365Yes
42-1318107412,575 ft
42-1310618032,324 ftMar 1978Mar 2008Yes
42-1310617922,560 ftJul 1976Apr 2010Yes

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 2026156063.503.75$9,906
Jan 20260059.138.00$0
Dec 20250056.664.41$0
Nov 2025154058.593.93$9,023
Oct 20250059.383.30$0
Sep 20250062.743.08$0
Aug 20250063.933.01$0
Jul 2025156066.743.32$10,411
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 2025161074.324.28$11,966
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 202463078.082.63$4,919
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 2022160076.415.73$12,226
Nov 20220085.005.65$0
Oct 2022150087.185.86$13,077
Sep 20220084.888.16$0
Aug 20220094.529.13$0
Jul 202200101.587.54$0
Jun 20221620115.097.98$18,645
May 202200109.378.43$0
Apr 202200104.226.84$0
Mar 202200108.885.08$0
Feb 2022157091.054.86$14,295
Jan 20220081.844.54$0
Dec 20210071.323.90$0
Nov 2021157077.435.24$12,157
Oct 20210079.795.71$0
Sep 20210069.865.35$0
Aug 20210066.024.22$0
Jul 2021160070.783.98$11,325
Jun 20210069.493.38$0
May 20210063.483.02$0
Apr 2021162060.362.76$9,778
Mar 20210061.302.72$0
Feb 20210057.805.55$0
Jan 2021155050.412.81$7,814
Dec 20200044.642.68$0
Nov 20200038.772.71$0
Oct 2020163036.972.48$6,026
Sep 20200037.091.99$0
Aug 20200039.982.39$0
Jul 2020164038.371.83$6,293
Jun 20200034.901.69$0
May 20200016.921.81$0
Apr 20200014.751.80$0
Mar 2020158030.341.86$4,794
Feb 20200049.881.98$0
Jan 20200057.252.09$0
Dec 2019152059.012.30$8,970
Nov 20190055.302.75$0
Oct 2019163053.472.42$8,716
Sep 20190055.052.66$0
Aug 2019157053.112.30$8,338
Jul 20190056.272.46$0
Jun 20190052.782.49$0
May 2019154058.482.74$9,006
Apr 2019155062.632.75$9,708
Mar 20190056.803.06$0
Feb 20190050.852.79$0
Jan 2019165046.033.23$7,595
Dec 20180046.594.19$0
Nov 2018166052.934.24$8,786
Oct 20180061.443.40$0
Sep 2018159059.543.11$9,467
Aug 20180059.403.07$0
Jul 2018161065.142.93$10,488
Jun 20180060.183.08$0
May 20180065.382.90$0
Apr 2018164063.842.90$10,470
Mar 20180061.222.79$0
Feb 2018166061.782.77$10,255
Jan 20180062.874.01$0
Dec 20170057.272.92$0
Nov 2017165055.423.12$9,144
Oct 20170049.292.98$0
Sep 2017162047.523.09$7,698
Aug 20170045.373.00$0
Jul 20170043.873.09$0
Jun 2017165042.493.09$7,011
May 20170045.373.26$0
Apr 2017163047.933.21$7,813
Mar 20170046.772.98$0
Feb 2017163050.452.95$8,223
Jan 20170049.413.42$0
Dec 20160048.763.72$0
Nov 2016162042.492.64$6,883
Oct 20160046.193.09$0
Sep 20160041.553.10$0
Aug 2016161041.442.92$6,672
Jul 20160041.622.92$0
Jun 20160045.352.69$0
May 20160042.521.99$0
Apr 2016127036.561.99$4,643
Mar 2016127033.011.79$4,192
Feb 20160026.472.06$0
Jan 2016158027.352.36$4,321
Dec 20150032.362.00$0
Nov 2015163038.792.17$6,323
Oct 20150043.552.43$0
Sep 2015157042.992.76$6,749
Aug 20150040.162.87$0
Jul 2015147048.152.95$7,078
Jun 20150056.152.88$0
May 20150055.212.96$0
Apr 2015155049.822.71$7,722
Mar 20150042.892.93$0
Feb 2015145044.662.98$6,476
Jan 2015150043.433.10$6,515
Dec 20140054.693.59$0
Nov 2014158070.464.25$11,133
Oct 20140078.303.90$0
Sep 2014153086.164.05$13,182
Aug 2014148089.394.04$13,230
Jul 20140096.564.18$0
Jun 2014156098.164.74$15,313
May 20140094.734.73$0
Apr 2014153095.944.81$14,679
Mar 2014151095.895.06$14,479
Feb 20140097.406.19$0
Jan 2014147090.404.86$13,289
Dec 2013146091.824.35$13,406
Nov 20130088.853.74$0
Oct 20130097.423.78$0
Sep 201300104.113.72$0
Aug 20131560104.253.52$16,263
Jul 201300102.523.72$0
Jun 20130094.403.93$0
May 2013158094.834.15$14,983
Apr 20130093.964.28$0
Mar 20130093.623.91$0
Feb 2013159091.233.42$14,506
Jan 20130091.603.42$0
Dec 2012156086.773.42$13,536
Nov 20120086.953.62$0
Oct 20120089.383.40$0
Sep 2012159094.672.92$15,053
Aug 20120092.662.91$0
Jul 2012158085.133.02$13,451
Jun 20120079.822.52$0
May 2012161091.612.49$14,749
Apr 201200101.652.00$0
Mar 20121520105.052.22$15,968
Feb 201200101.102.57$0
Jan 2012168098.092.73$16,479
Dec 20110096.873.24$0
Nov 2011170095.723.31$16,272
Oct 20110084.983.65$0
Sep 2011156083.623.99$13,045
Aug 2011157083.404.15$13,094
Jul 20110094.144.52$0
Jun 2011154092.904.64$14,307
May 20110098.134.40$0
Apr 20111640105.964.33$17,377
Mar 20110096.364.06$0
Feb 20110085.644.18$0
Jan 2011152086.504.59$13,148
Dec 2010167085.734.35$14,317
Nov 2010154080.843.80$12,449
Oct 20100078.103.51$0
Sep 20100072.633.98$0
Aug 2010153073.684.42$11,273
Jul 20100072.554.74$0
Jun 20100070.364.91$0
May 2010152071.124.24$10,810
Apr 20100081.694.12$0
Mar 20100078.394.39$0
Feb 2010155073.585.44$11,405
Jan 20100074.365.96$0
Dec 20090071.445.48$0
Nov 20090074.593.75$0
Oct 2009166072.544.11$12,042
Sep 20090065.543.06$0
Aug 20090067.423.22$0
Jul 20090061.133.46$0
Jun 2009149066.163.90$9,858
May 20090054.743.93$0
Apr 20090046.773.59$0
Mar 2009150042.144.06$6,321
Feb 20090032.814.63$0
Jan 2009155035.865.37$5,558
Dec 20080037.105.98$0
Nov 20080055.496.86$0
Oct 20080075.246.92$0
Sep 200800101.767.88$0
Aug 20081790114.228.48$20,445
Jul 200800131.0811.39$0
Jun 200800131.3313.03$0
May 200800123.1711.57$0
Apr 20081760110.3110.45$19,415
Mar 200800101.909.66$0
Feb 20080092.538.77$0
Jan 2008184090.388.21$16,630
Dec 20070088.337.30$0
Nov 20070091.677.29$0
Oct 2007173082.856.92$14,333
Sep 20070075.846.24$0
Aug 2007340069.066.39$23,480
Jul 20070070.906.39$0
Jun 20070062.007.55$0
May 2007168058.747.85$9,868
Apr 20070059.617.81$0
Mar 2007178056.927.30$10,132
Feb 2007176055.108.22$9,698
Jan 20070050.306.73$0
Dec 2006171056.656.92$9,687
Nov 2006174054.207.62$9,431
Oct 20060054.906.01$0
Sep 2006184060.085.04$11,055
Aug 2006178068.717.34$12,230
Jul 20060069.376.34$0
Jun 2006174066.286.38$11,533
May 2006175066.016.42$11,552
Apr 20060064.397.36$0
Mar 2006174056.707.08$9,866
Feb 2006145057.597.75$8,351
Jan 2006173060.598.93$10,482
Dec 2005172054.9413.42$9,450
Nov 20050054.6910.59$0
Oct 2005180058.3413.80$10,501
Sep 2005157061.4512.08$9,648
Aug 2005171061.519.80$10,518
Jul 20050055.697.84$0
Jun 2005168052.337.38$8,791
May 2005166045.226.65$7,507
Apr 20050049.207.36$0
Mar 2005153050.377.15$7,707
Feb 2005173045.226.31$7,823
Jan 2005179043.166.32$7,726
Dec 2004176039.866.75$7,015
Nov 20040045.286.33$0
Oct 2004161049.706.52$8,002
Sep 2004162043.245.28$7,005
Aug 2004159042.375.55$6,737
Jul 2004157038.286.08$6,010
Jun 2004160036.106.43$5,776
May 2004172037.486.49$6,447
Apr 2004166034.475.86$5,722
Mar 2004154034.365.53$5,291
Feb 20040032.455.51$0
Jan 20040032.036.30$0
Dec 20030030.266.30$0
Nov 20030028.804.60$0
Oct 2003169028.174.76$4,761
Sep 2003170026.314.75$4,473
Aug 2003172029.765.13$5,119
Jul 2003163029.415.17$4,794
Jun 2003159028.565.98$4,541
May 2003324026.595.97$8,615
Apr 2003158026.675.41$4,214
Mar 2003171031.146.10$5,325
Feb 2003170033.487.93$5,692
Jan 2003162030.315.58$4,910
Dec 2002327026.914.85$8,800
Nov 2002169024.664.14$4,168
Oct 20020026.464.23$0
Sep 2002304027.443.64$8,342
Aug 2002167025.963.16$4,335
Jul 20020024.583.06$0
Jun 2002160023.733.34$3,797
May 2002158024.663.58$3,896
Apr 2002156023.653.51$3,689
Mar 2002157022.003.10$3,454
Feb 2002311018.222.38$5,666
Jan 20020017.172.38$0
Dec 2001319016.932.36$5,401
Nov 2001159018.072.41$2,873
Oct 2001165019.782.53$3,264
Sep 2001154024.262.25$3,736
Aug 2001311024.873.05$7,735
Jul 2001313023.933.20$7,490
Jun 2001166024.563.82$4,077
May 2001156025.524.31$3,981
Apr 2001161024.685.34$3,973
Mar 2001306024.545.38$7,509
Feb 2001168027.755.77$4,662
Jan 2001176027.478.40$4,835
Dec 2000350026.889.12$9,408
Nov 2000171032.215.66$5,508
Oct 2000329031.235.15$10,275
Sep 2000174031.875.19$5,545
Aug 2000172029.644.54$5,098
Jul 2000170028.534.09$4,850
Jun 2000174029.304.40$5,098
May 2000338027.263.68$9,214
Apr 20000024.513.12$0
Mar 2000329028.422.86$9,350
Feb 2000315027.622.73$8,700
Jan 2000168025.272.48$4,245
Dec 1999165024.282.42$4,006
Nov 1999165023.192.43$3,826
Oct 1999166020.982.80$3,483
Sep 1999328021.752.62$7,134
Aug 1999168019.262.88$3,236
Jul 1999164017.892.37$2,934
Jun 1999170015.942.36$2,710
May 1999168015.792.32$2,653
Apr 1999314015.102.21$4,741
Mar 1999173012.471.84$2,157
Feb 199916109.981.82$1,607
Jan 1999330010.381.90$3,425
Dec 199833509.201.77$3,082
Nov 1998165010.892.19$1,797
Oct 1998323012.421.97$4,012
Sep 1998328012.592.08$4,130
Aug 1998334011.301.91$3,774
Jul 1998337011.742.24$3,956
Jun 1998331011.242.24$3,720
May 1998165012.622.21$2,082
Apr 1998344013.042.51$4,486
Mar 1998333012.802.31$4,262
Feb 1998325013.952.30$4,534
Jan 1998313014.702.15$4,601
Dec 1997316016.322.41$5,157
Nov 1997330018.193.09$6,003
Oct 1997325019.253.15$6,256
Sep 1997322017.742.95$5,712
Aug 1997330017.862.55$5,894
Jul 1997319017.582.25$5,608
Jun 1997311017.242.26$5,362
May 1997473018.972.31$8,973
Apr 1997156017.882.08$2,789
Mar 1997321018.951.94$6,083
Feb 1997302020.492.21$6,188
Jan 1997313023.483.54$7,349
Dec 1996159023.32$3,708
Nov 1996155021.97$3,405
Oct 1996485023.31$11,305
Sep 1996169022.22$3,755
Aug 1996500020.26$10,130
Jul 1996492019.55$9,619
Jun 1996321018.73$6,012
May 1996288019.43$5,596
Apr 1996152021.51$3,270
Mar 1996166019.38$3,217
Feb 1996334016.98$5,671
Jan 1996329017.07$5,616
Dec 1995314017.19$5,398
Nov 1995333016.00$5,328
Oct 1995330015.43$5,092
Sep 1995332016.18$5,372
Aug 1995320015.92$5,094
Jul 1995335015.24$5,105
Jun 1995162016.41$2,658
May 1995165017.56$2,897
Apr 1995339017.73$6,010
Mar 1995486016.44$7,990
Feb 1995320016.58$5,306
Jan 1995320015.92$5,094
Dec 1994522015.03$7,846
Nov 1994354015.90$5,629
Oct 1994346015.58$5,391
Sep 1994352115.29$5,382
Aug 1994492116.13$7,936
Jul 1994472117.56$8,288
Jun 1994333117.09$5,691
May 1994341115.88$5,415
Apr 1994367114.14$5,189
Mar 1994187112.46$2,330
Feb 1994195112.50$2,438
Jan 1994356112.66$4,507
Dec 1993195112.33$2,404
Nov 1993195114.49$2,826
Oct 1993342115.85$5,421
Sep 1993188115.03$2,826
Aug 1993347115.66$5,434
Jul 1993163115.46$2,520
Jun 1993342116.79$5,742
May 1993193117.68$3,412
Apr 1993386118.05$6,967
Mar 1993187118.14$3,392
Feb 1993194117.90$3,473
Jan 1993192116.93$3,251

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.

Feb 2026 — as filed, then multipliedworked
Oil                  156 bbl  × $ 63.50 =     $9,906
Casinghead gas         0 Mcf  × $  3.75 =         $0

────────────────────────────────────────────────────
Month total                                   $9,906

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/8767 is the state's own key, not one this site invented.