MANKINS, CECIL

Operated by ENR OPERATING, LLC (P-5 253075) in the ARCHER COUNTY REGULAR field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 219District 09Field 03446001OilCasinghead gasSaveExport
Value, all time
$3.8 M
Jan 1993 – May 2026
Value, last 12 filed months
$33 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 2,166 leases and 11,249 wells, and the rule below applies to all of them.

Discovered
1911-12-31
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

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
OilDisposition78,768 bbl$3,754,443
Casinghead gasProduction22 Mcf$0
Total$3,754,443

22 Mcf of this lease's gas, across 22 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 (38)

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 33.7887, -98.7863. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.9 miles.

33.78742, -98.78650 · 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
60.5%
23 of 38 wells
With a plug date
60.5%
23 of 38 wells
Median depth
4,307 ft
37 wells filed one
Completion to plug
15.0 years
median over 20 wells

What the state filed about each well

On the RRC proration schedule
2360.5%
A plug date is filed
2360.5%
BothOn the schedule and plugged. Neither fact cancels the other.
2360.5%
NeitherNo plug date, and not on the schedule.
1539.5%

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

Total depth in feet, 37 of 38 wells. Median 4,307 ft, with the middle half between 1,861 and 4,314 ft; the shallowest is 1,031 ft and the deepest 4,350 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

Last completion by decade, 32 of 38 wells, Oct 1954 – Feb 2024. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Oct 1954 – Feb 2024
32 of 38 wells; 6 filed none
Plug dates filed
Apr 1958 – Jun 2023
23 of 38 wells; 15 filed none

Last completion to plug: a median of 15.0 years across the 20 wells that filed both dates, with the middle half between 12.4 years and 24.8 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

38 wells

42-00903809254,310 ftMar 1975Yes
42-00903815334,341 ftDec 2015Yes
42-00903817434,315 ftMay 1997Yes
42-009037965
42-00903811284,314 ft
42-00916000411,031 ft
42-0090384968WS2,900 ftFeb 2024
42-0094036774 S1,861 ftApr 1991
42-00903813314,350 ftMar 1990
42-00930238734,301 ftMay 1976
42-00903853724,314 ftSep 1965Jun 2023Yes
42-00903805144,292 ftAug 1965Jun 2023Yes
42-00903816374,333 ftJul 1960Mar 1975Yes
42-00903791344,330 ftDec 1959Mar 1975Yes
42-00913525361,795 ftMay 1959Aug 1968Yes
42-00903814324,342 ftJun 1958Jun 2023Yes
42-00903812304,327 ftJun 1958May 1997Yes
42-0091942129S1,789 ftJun 1958Jul 1968Yes
42-00903810274,307 ftMay 1958Mar 1975Yes
42-00903808244,305 ftApr 1958Mar 1975Yes
42-0091353626S1,787 ftApr 1958Jul 1968Yes
42-00903807234,313 ftApr 1958Apr 1997Yes
42-0091353420S1,777 ftMar 1956Jul 1968Yes
42-0091353218S1,787 ftFeb 1956Jul 1968Yes
42-0091353117S1,783 ftFeb 1956Aug 1968Yes
42-0091353319S1,783 ftFeb 1956Aug 1968Yes
42-0091353016S1,784 ftJan 1956Jul 1968Yes
42-00903804134,314 ftAug 1955
42-00903803124,282 ftMay 1955
42-00903802114,334 ftMay 1955Mar 1975Yes
42-0090380094,302 ftMay 1955
42-00903801104,298 ftApr 1955
42-0090379984,313 ftJan 1955
42-0090379764,314 ftJan 1955Mar 1975Yes
42-0090379874,334 ftJan 1955Apr 1958Yes
42-0090379544,292 ftDec 1954
42-0090379324,310 ftNov 1954
42-0090379214,307 ftOct 1954

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 2026159089.753.15$14,270
Feb 20260063.503.75$0
Jan 20260059.138.00$0
Dec 2025159056.664.41$9,009
Nov 20250058.593.93$0
Oct 20250059.383.30$0
Sep 2025160062.743.08$10,038
Aug 20250063.933.01$0
Jul 20250066.743.32$0
Jun 20250066.483.13$0
May 2025157060.553.23$9,506
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 2024162069.052.20$11,186
Oct 20240071.372.28$0
Sep 2024349069.612.36$24,294
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 20220081.844.54$0
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 2019160055.302.75$8,848
Oct 20190053.472.42$0
Sep 20190055.052.66$0
Aug 201968053.112.30$3,611
Jul 2019138056.272.46$7,765
Jun 20190052.782.49$0
May 201937058.482.74$2,164
Apr 20190062.632.75$0
Mar 20190056.803.06$0
Feb 20190050.852.79$0
Jan 2019165046.033.23$7,595
Dec 20180046.594.19$0
Nov 20180052.934.24$0
Oct 20180061.443.40$0
Sep 20180059.543.11$0
Aug 201895059.403.07$5,643
Jul 2018329065.142.93$21,431
Jun 2018119060.183.08$7,161
May 2018304065.382.90$19,876
Apr 2018214063.842.90$13,662
Mar 20180061.222.79$0
Feb 20180061.782.77$0
Jan 2018143062.874.01$8,990
Dec 2017240057.272.92$13,745
Nov 2017207055.423.12$11,472
Oct 201779049.292.98$3,894
Sep 2017168047.523.09$7,983
Aug 20170045.373.00$0
Jul 2017175043.873.09$7,677
Jun 20170042.493.09$0
May 2017167045.373.26$7,577
Apr 2017174047.933.21$8,340
Mar 20170046.772.98$0
Feb 2017172050.452.95$8,677
Jan 2017338049.413.42$16,701
Dec 2016348048.763.72$16,968
Nov 2016174042.492.64$7,393
Oct 2016343046.193.09$15,843
Sep 2016171041.553.10$7,105
Aug 2016351041.442.92$14,545
Jul 2016173041.622.92$7,200
Jun 2016349045.352.69$15,827
May 2016341042.521.99$14,499
Apr 2016339036.561.99$12,394
Mar 2016176033.011.79$5,810
Feb 2016341026.472.06$9,026
Jan 2016342027.352.36$9,354
Dec 2015341032.362.00$11,035
Nov 2015331038.792.17$12,839
Oct 2015167043.552.43$7,273
Sep 2015335042.992.76$14,402
Aug 2015164040.162.87$6,586
Jul 2015163048.152.95$7,848
Jun 201558056.152.88$3,257
May 2015172055.212.96$9,496
Apr 2015347049.822.71$17,288
Mar 2015170042.892.93$7,291
Feb 2015173044.662.98$7,726
Jan 2015171043.433.10$7,427
Dec 2014287054.693.59$15,696
Nov 2014252070.464.25$17,756
Oct 2014170078.303.90$13,311
Sep 2014167086.164.05$14,389
Aug 2014160089.394.04$14,302
Jul 2014345096.564.18$33,313
Jun 2014167098.164.74$16,393
May 2014297094.734.73$28,135
Apr 2014294095.944.81$28,206
Mar 2014163095.895.06$15,630
Feb 2014343097.406.19$33,408
Jan 2014173090.404.86$15,639
Dec 2013302091.824.35$27,730
Nov 2013171088.853.74$15,193
Oct 2013303097.423.78$29,518
Sep 20131700104.113.72$17,699
Aug 20133300104.253.52$34,403
Jul 20131720102.523.72$17,633
Jun 2013334094.403.93$31,530
May 2013174094.834.15$16,500
Apr 2013347093.964.28$32,604
Mar 2013338093.623.91$31,644
Feb 2013280091.233.42$25,544
Jan 2013141091.603.42$12,916
Dec 2012350086.773.42$30,370
Nov 2012282086.953.62$24,520
Oct 2012294089.383.40$26,278
Sep 2012345094.672.92$32,661
Aug 2012344092.662.91$31,875
Jul 2012341085.133.02$29,029
Jun 2012463079.822.52$36,957
May 2012349091.612.49$31,972
Apr 20123410101.652.00$34,663
Mar 20121760105.052.22$18,489
Feb 20121790101.102.57$18,097
Jan 2012340098.092.73$33,351
Dec 2011212096.873.24$20,536
Nov 2011268095.723.31$25,653
Oct 2011175084.983.65$14,872
Sep 2011284083.623.99$23,748
Aug 2011249083.404.15$20,767
Jul 2011332094.144.52$31,254
Jun 2011347092.904.64$32,236
May 2011113098.134.40$11,089
Apr 20111740105.964.33$18,437
Mar 2011355096.364.06$34,208
Feb 2011175085.644.18$14,987
Jan 2011292086.504.59$25,258
Dec 2010309085.734.35$26,491
Nov 2010287080.843.80$23,201
Oct 2010350078.103.51$27,335
Sep 2010356072.633.98$25,856
Aug 2010179073.684.42$13,189
Jul 2010347072.554.74$25,175
Jun 2010173070.364.91$12,172
May 2010175071.124.24$12,446
Apr 2010173081.694.12$14,132
Mar 2010323078.394.39$25,320
Feb 2010174073.585.44$12,803
Jan 2010333074.365.96$24,762
Dec 2009187071.445.48$13,359
Nov 2009340074.593.75$25,361
Oct 2009176072.544.11$12,767
Sep 2009346065.543.06$22,677
Aug 2009173067.423.22$11,664
Jul 2009344061.133.46$21,029
Jun 2009167066.163.90$11,049
May 2009173054.743.93$9,470
Apr 2009335046.773.59$15,668
Mar 2009169042.144.06$7,122
Feb 2009332032.814.63$10,893
Jan 2009180035.865.37$6,455
Dec 2008341037.105.98$12,651
Nov 2008169055.496.86$9,378
Oct 2008343075.246.92$25,807
Sep 20083520101.767.88$35,820
Aug 20081670114.228.48$19,075
Jul 20083440131.0811.39$45,092
Jun 20083500131.3313.03$45,966
May 20081710123.1711.57$21,062
Apr 20083520110.3110.45$38,829
Mar 20083530101.909.66$35,971
Feb 2008358092.538.77$33,126
Jan 2008347090.388.21$31,362
Dec 2007181088.337.30$15,988
Nov 2007358091.677.29$32,818
Oct 2007182082.856.92$15,079
Sep 2007356075.846.24$26,999
Aug 2007167069.066.39$11,533
Jul 2007166070.906.39$11,769
Jun 2007349062.007.55$21,638
May 2007172058.747.85$10,103
Apr 2007173059.617.81$10,313
Mar 2007336056.927.30$19,125
Feb 2007174055.108.22$9,587
Jan 2007335050.306.73$16,851
Dec 2006178056.656.92$10,084
Nov 2006336054.207.62$18,211
Oct 2006173054.906.01$9,498
Sep 2006341060.085.04$20,487
Aug 2006172068.717.34$11,818
Jul 2006343069.376.34$23,794
Jun 2006171066.286.38$11,334
May 2006174066.016.42$11,486
Apr 2006347064.397.36$22,343
Mar 2006176056.707.08$9,979
Feb 2006173057.597.75$9,963
Jan 2006344060.598.93$20,843
Dec 2005175054.9413.42$9,615
Nov 2005343054.6910.59$18,759
Oct 2005175058.3413.80$10,210
Sep 2005343061.4512.08$21,077
Aug 2005168061.519.80$10,334
Jul 2005171055.697.84$9,523
Jun 2005173052.337.38$9,053
May 2005355045.226.65$16,053
Apr 2005170049.207.36$8,364
Mar 2005351050.377.15$17,680
Feb 2005175045.226.31$7,914
Jan 2005354043.166.32$15,279
Dec 2004354039.866.75$14,110
Nov 2004175045.286.33$7,924
Oct 2004349049.706.52$17,345
Sep 2004175043.245.28$7,567
Aug 2004349042.375.55$14,787
Jul 2004173038.286.08$6,622
Jun 2004343036.106.43$12,382
May 2004171037.486.49$6,409
Apr 2004342034.475.86$11,789
Mar 2004169034.365.53$5,807
Feb 2004171032.455.51$5,549
Jan 2004173032.036.30$5,541
Dec 2003171030.266.30$5,174
Nov 2003346028.804.60$9,965
Oct 20030028.174.76$0
Sep 2003343026.314.75$9,024
Aug 2003171029.765.13$5,089
Jul 2003175029.415.17$5,147
Jun 2003177028.565.98$5,055
May 2003172026.595.97$4,573
Apr 2003348026.675.41$9,281
Mar 2003176031.146.10$5,481
Feb 2003173033.487.93$5,792
Jan 2003177030.315.58$5,365
Dec 2002353026.914.85$9,499
Nov 2002174024.664.14$4,291
Oct 2002173026.464.23$4,578
Sep 2002176027.443.64$4,829
Aug 2002171025.963.16$4,439
Jul 2002178024.583.06$4,375
Jun 2002173023.733.34$4,105
May 2002174024.663.58$4,291
Apr 2002351023.653.51$8,301
Mar 2002168022.003.10$3,696
Feb 2002176018.222.38$3,207
Jan 2002347017.172.38$5,958
Dec 2001178016.932.36$3,014
Nov 2001179018.072.41$3,235
Oct 2001178019.782.53$3,521
Sep 2001174024.262.25$4,221
Aug 2001177024.873.05$4,402
Jul 2001173023.933.20$4,140
Jun 2001349024.563.82$8,571
May 2001173025.524.31$4,415
Apr 2001175024.685.34$4,319
Mar 2001353024.545.38$8,663
Feb 2001176027.755.77$4,884
Jan 2001342027.478.40$9,395
Dec 2000168026.889.12$4,516
Nov 2000171032.215.66$5,508
Oct 2000137031.235.15$4,279
Sep 2000176031.875.19$5,609
Aug 2000321029.644.54$9,514
Jul 2000173028.534.09$4,936
Jun 2000317029.304.40$9,288
May 2000165027.263.68$4,498
Apr 2000293024.513.12$7,181
Mar 2000179028.422.86$5,087
Feb 2000180027.622.73$4,972
Jan 2000332025.272.48$8,390
Dec 1999345024.282.42$8,377
Nov 1999167023.192.43$3,873
Oct 1999172020.982.80$3,609
Sep 1999344021.752.62$7,482
Aug 1999178019.262.88$3,428
Jul 1999164017.892.37$2,934
Jun 1999320015.942.36$5,101
May 1999365015.792.32$5,763
Apr 1999184015.102.21$2,778
Mar 1999178012.471.84$2,220
Feb 199934909.981.82$3,483
Jan 1999183010.381.90$1,900
Dec 199835609.201.77$3,275
Nov 1998181010.892.19$1,971
Oct 1998292012.421.97$3,627
Sep 1998179012.592.08$2,254
Aug 1998179011.301.91$2,023
Jul 1998321011.742.24$3,769
Jun 1998282011.242.24$3,170
May 1998271012.622.21$3,420
Apr 1998180013.042.51$2,347
Mar 1998175012.802.31$2,240
Feb 1998271013.952.30$3,780
Jan 1998185014.702.15$2,720
Dec 1997374016.322.41$6,104
Nov 1997186018.193.09$3,383
Oct 1997361019.253.15$6,949
Sep 1997180017.742.95$3,193
Aug 1997324017.862.55$5,787
Jul 1997359017.582.25$6,311
Jun 1997177017.242.26$3,051
May 1997341018.972.31$6,469
Apr 1997353017.882.08$6,312
Mar 1997172018.951.94$3,259
Feb 1997318020.492.21$6,516
Jan 1997183023.483.54$4,297
Dec 1996169023.32$3,941
Nov 1996295021.97$6,481
Oct 1996177023.31$4,126
Sep 1996359022.22$7,977
Aug 1996178020.26$3,606
Jul 1996359019.55$7,018
Jun 1996181018.73$3,390
May 1996180019.43$3,497
Apr 1996368021.51$7,916
Mar 1996179019.38$3,469
Feb 1996361016.98$6,130
Jan 1996168017.07$2,868
Dec 1995192017.19$3,300
Nov 1995347016.00$5,552
Oct 1995339015.43$5,231
Sep 1995314016.18$5,081
Aug 1995181015.92$2,882
Jul 1995292015.24$4,450
Jun 1995510016.41$8,369
May 1995176017.56$3,091
Apr 1995324017.73$5,745
Mar 1995341016.44$5,606
Feb 1995355016.58$5,886
Jan 1995363015.92$5,779
Dec 1994184015.03$2,766
Nov 1994168015.90$2,671
Oct 1994349115.58$5,437
Sep 1994184115.29$2,813
Aug 1994295116.13$4,758
Jul 1994354117.56$6,216
Jun 1994361117.09$6,169
May 1994178115.88$2,827
Apr 1994320114.14$4,525
Mar 1994365112.46$4,548
Feb 1994191112.50$2,388
Jan 1994362112.66$4,583
Dec 1993363112.33$4,476
Nov 1993369114.49$5,347
Oct 1993309115.85$4,898
Sep 1993359115.03$5,396
Aug 1993363115.66$5,685
Jul 1993363115.46$5,612
Jun 1993511116.79$8,580
May 1993367117.68$6,489
Apr 1993374118.05$6,751
Mar 1993357118.14$6,476
Feb 1993356117.90$6,372
Jan 1993367116.93$6,213

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.

Mar 2026 — as filed, then multipliedworked
Oil                  159 bbl  × $ 89.75 =    $14,270
Casinghead gas         0 Mcf  × $  3.15 =         $0

────────────────────────────────────────────────────
Month total                                  $14,270

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. 09/O/219 is the state's own key, not one this site invented.