MCLAUGHLIN ACCT-4

Operated by ATLAS OPERATING LLC (P-5 36587) in the DIAMOND -M- (CLEAR FORK) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 66956District 8AField 24562284Hydrogen sulphide fieldOilCasinghead gasSaveExport
Value, all time
$6.1 M
Jan 1993 – May 2026
Value, last 12 filed months
$31 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 52 leases and 468 wells, and the rule below applies to all of them.

Discovered
1940-10-09
as the register files it
Field class
Oil
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 10 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: DIAMOND -M- (SAN ANDRES)CONS TO THIS FLD PER DOC 8A-0201285 4-5-93

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
OilDisposition135,510 bbl$6,135,985
Casinghead gasProduction77 Mcf$328
Total$6,136,314

19 Mcf of this lease's gas, across 19 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 (10)

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 32.7043, -101.0884. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.7 miles.

32.70423, -101.09154 · 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
40.0%
4 of 10 wells
With a plug date
40.0%
4 of 10 wells
Median depth
3,264 ft
10 wells filed one
Completion to plug
15.3 years
median over 3 wells

What the state filed about each well

On the RRC proration schedule
440.0%
A plug date is filed
440.0%
BothOn the schedule and plugged. Neither fact cancels the other.
440.0%
NeitherNo plug date, and not on the schedule.
660.0%

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

Total depth in feet, 10 of 10 wells. Median 3,264 ft, with the middle half between 2,576 and 4,383 ft; the shallowest is 2,571 ft and the deepest 7,050 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, 9 of 10 wells, Nov 1985 – Nov 2017. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Nov 1985 – Nov 2017
9 of 10 wells; 1 filed none
Plug dates filed
May 1997 – Jun 2026
4 of 10 wells; 6 filed none

Last completion to plug: a median of 15.3 years across the 3 wells that filed both dates, with the middle half between 13.8 years and 18.8 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

10 wells

42-415019811B2,585 ftMay 1997Yes
42-415344831527,050 ftNov 2017
42-415351111454,510 ftJul 2015
42-415332151184,000 ftJul 2015
42-415325171033,937 ftJan 2014Jun 2026Yes
42-415019862B2,571 ftMar 2001
42-415104133B2,571 ftApr 1993
42-415327981A2,590 ftMar 1993
42-41501449316,878 ftSep 1992Dec 2007Yes
42-415328262A2,573 ftNov 1985Feb 2008Yes

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 2025332058.593.93$19,452
Oct 20250059.383.30$0
Sep 20250062.743.08$0
Aug 20250063.933.01$0
Jul 20250066.743.32$0
Jun 2025177066.483.13$11,767
May 20250060.553.23$0
Apr 2025173062.363.54$10,788
Mar 2025171067.704.27$11,577
Feb 20250070.884.34$0
Jan 2025183074.324.28$13,601
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 2024172078.812.20$13,555
Apr 2024172084.451.66$14,525
Mar 20240080.301.55$0
Feb 2024178076.091.78$13,544
Jan 20240073.023.30$0
Dec 2023340071.262.61$24,228
Nov 20230077.892.81$0
Oct 2023159085.443.09$13,585
Sep 20230089.042.74$0
Aug 20230080.522.67$0
Jul 20230074.852.64$0
Jun 20230068.962.26$0
May 2023342070.622.23$24,152
Apr 2023172078.122.24$13,437
Mar 2023353072.852.39$25,716
Feb 2023344075.112.47$25,838
Jan 2023175076.533.39$13,393
Dec 2022350076.415.73$26,744
Nov 2022170085.005.65$14,450
Oct 2022351087.185.86$30,600
Sep 2022338084.888.16$28,689
Aug 2022179094.529.13$16,919
Jul 20221780101.587.54$18,081
Jun 20223490115.097.98$40,166
May 20221710109.378.43$18,702
Apr 20221720104.226.84$17,926
Mar 20221730108.885.08$18,836
Feb 2022176091.054.86$16,025
Jan 2022355081.844.54$29,053
Dec 2021356071.323.90$25,390
Nov 2021181077.435.24$14,015
Oct 2021529079.795.71$42,209
Sep 2021176069.865.35$12,295
Aug 2021346066.024.22$22,843
Jul 2021357070.783.98$25,268
Jun 2021340069.493.38$23,627
May 2021367063.483.02$23,297
Apr 2021693060.362.76$41,829
Mar 2021361061.302.72$22,129
Feb 2021174057.805.55$10,057
Jan 2021357050.412.81$17,996
Dec 2020355044.642.68$15,847
Nov 2020347038.772.71$13,453
Oct 2020175036.972.48$6,470
Sep 2020350037.091.99$12,982
Aug 2020353039.982.39$14,113
Jul 2020522038.371.83$20,029
Jun 2020178034.901.69$6,212
May 20200016.921.81$0
Apr 2020171014.751.80$2,522
Mar 2020359030.341.86$10,892
Feb 2020349049.881.98$17,408
Jan 2020526057.252.09$30,114
Dec 2019369059.012.30$21,775
Nov 2019535055.302.75$29,586
Oct 2019525053.472.42$28,072
Sep 2019326055.052.66$17,946
Aug 2019531053.112.30$28,201
Jul 2019350056.272.46$19,695
Jun 2019530052.782.49$27,973
May 2019521058.482.74$30,468
Apr 2019519062.632.75$32,505
Mar 2019533056.803.06$30,274
Feb 2019543050.852.79$27,612
Jan 2019539046.033.23$24,810
Dec 2018716046.594.19$33,358
Nov 2018544052.934.24$28,794
Oct 2018499061.443.40$30,659
Sep 2018550059.543.11$32,747
Aug 2018532059.403.07$31,601
Jul 2018723065.142.93$47,096
Jun 2018531060.183.08$31,956
May 2018715065.382.90$46,747
Apr 2018728063.842.90$46,476
Mar 2018722061.222.79$44,201
Feb 2018717061.782.77$44,296
Jan 20181,093062.874.01$68,717
Dec 2017908057.272.92$52,001
Nov 20171,037055.423.12$57,471
Oct 2017731049.292.98$36,031
Sep 2017550047.523.09$26,136
Aug 2017722045.373.00$32,757
Jul 2017710043.873.09$31,148
Jun 2017718042.493.09$30,508
May 2017892045.373.26$40,470
Apr 2017541047.933.21$25,930
Mar 2017913046.772.98$42,701
Feb 2017720050.452.95$36,324
Jan 2017901049.413.42$44,518
Dec 2016920048.763.72$44,859
Nov 2016903042.492.64$38,368
Oct 2016711046.193.09$32,841
Sep 2016819041.553.10$34,029
Aug 2016900041.442.92$37,296
Jul 20161,071041.622.92$44,575
Jun 2016894045.352.69$40,543
May 20161,261042.521.99$53,618
Apr 20161,233036.561.99$45,078
Mar 20161,468033.011.79$48,459
Feb 20161,643026.472.06$43,490
Jan 20161,852027.352.36$50,652
Dec 20151,609032.362.00$52,067
Nov 20152,165038.792.17$83,980
Oct 20151,817043.552.43$79,130
Sep 20152,913042.992.76$125,230
Aug 20152,533040.162.87$101,725
Jul 20151,226048.152.95$59,032
Jun 201541056.152.88$2,302
May 201573055.212.96$4,030
Apr 201525049.822.71$1,246
Mar 2015140042.892.93$6,005
Feb 201581044.662.98$3,617
Jan 2015146043.433.10$6,341
Dec 2014424054.693.59$23,189
Nov 2014326070.464.25$22,970
Oct 2014159078.303.90$12,450
Sep 2014157086.164.05$13,527
Aug 2014320089.394.04$28,605
Jul 2014160096.564.18$15,450
Jun 2014322098.164.74$31,608
May 2014165094.734.73$15,630
Apr 2014325095.944.81$31,181
Mar 2014336095.895.06$32,219
Feb 2014328097.406.19$31,947
Jan 2014150090.404.86$13,560
Dec 2013304091.824.35$27,913
Nov 2013153088.853.74$13,594
Oct 2013154097.423.78$15,003
Sep 20133010104.113.72$31,337
Aug 20131440104.253.52$15,012
Jul 20131530102.523.72$15,686
Jun 2013313094.403.93$29,547
May 2013152094.834.15$14,414
Apr 2013313093.964.28$29,409
Mar 2013153093.623.91$14,324
Feb 2013291091.233.42$26,548
Jan 2013143091.603.42$13,099
Dec 2012288086.773.42$24,990
Nov 2012146086.953.62$12,695
Oct 2012283089.383.40$25,295
Sep 2012280094.672.92$26,508
Aug 2012130092.662.91$12,046
Jul 2012280085.133.02$23,836
Jun 2012136079.822.52$10,856
May 2012280091.612.49$25,651
Apr 20122770101.652.00$28,157
Mar 20121460105.052.22$15,337
Feb 201200101.102.57$0
Jan 2012275098.092.73$26,975
Dec 2011142096.873.24$13,756
Nov 2011284095.723.31$27,184
Oct 2011268084.983.65$22,775
Sep 2011130083.623.99$10,871
Aug 2011260083.404.15$21,684
Jul 2011130094.144.52$12,238
Jun 2011253092.904.64$23,504
May 2011264098.134.40$25,906
Apr 20112580105.964.33$27,338
Mar 2011273096.364.06$26,306
Feb 2011129085.644.18$11,048
Jan 2011257086.504.59$22,231
Dec 2010260085.734.35$22,290
Nov 2010128080.843.80$10,348
Oct 2010249078.103.51$19,447
Sep 2010223072.633.98$16,196
Aug 2010117073.684.42$8,621
Jul 2010230072.554.74$16,687
Jun 2010111070.364.91$7,810
May 2010219071.124.24$15,575
Apr 2010208081.694.12$16,992
Mar 2010219078.394.39$17,167
Feb 2010110073.585.44$8,094
Jan 2010239074.365.96$17,772
Dec 2009119071.445.48$8,501
Nov 2009238074.593.75$17,752
Oct 2009120072.544.11$8,705
Sep 2009234065.543.06$15,336
Aug 2009232067.423.22$15,641
Jul 2009128061.133.46$7,825
Jun 2009226066.163.90$14,952
May 2009112054.743.93$6,131
Apr 2009216046.773.59$10,102
Mar 2009248042.144.06$10,451
Feb 2009123032.814.63$4,036
Jan 2009253035.865.37$9,073
Dec 2008248037.105.98$9,201
Nov 2008125055.496.86$6,936
Oct 2008253075.246.92$19,036
Sep 20082380101.767.88$24,219
Aug 20082520114.228.48$28,783
Jul 20082520131.0811.39$33,032
Jun 20081260131.3313.03$16,548
May 20082460123.1711.57$30,300
Apr 20082470110.3110.45$27,247
Mar 20081250101.909.66$12,738
Feb 2008251092.538.77$23,225
Jan 2008224090.388.21$20,245
Dec 2007114088.337.30$10,070
Nov 2007226091.677.29$20,717
Oct 2007227082.856.92$18,807
Sep 2007229075.846.24$17,367
Aug 2007113069.066.39$7,804
Jul 2007251070.906.39$17,796
Jun 2007125062.007.55$7,750
May 2007246058.747.85$14,450
Apr 2007255059.617.81$15,201
Mar 2007121056.927.30$6,887
Feb 2007251055.108.22$13,830
Jan 2007238050.306.73$11,971
Dec 2006244056.656.92$13,823
Nov 2006117054.207.62$6,341
Oct 2006250054.906.01$13,725
Sep 2006247060.085.04$14,840
Aug 2006150068.717.34$10,307
Jul 2006427069.376.34$29,621
Jun 2006138066.286.38$9,147
May 2006154066.016.42$10,166
Apr 2006117064.397.36$7,534
Mar 2006111056.707.08$6,294
Feb 200688057.597.75$5,068
Jan 2006114060.598.93$6,907
Dec 2005107054.9413.42$5,879
Nov 2005224054.6910.59$12,251
Oct 2005111058.3413.80$6,476
Sep 2005176061.4512.08$10,815
Aug 200595061.519.80$5,843
Jul 200583055.697.84$4,622
Jun 2005154052.337.38$8,059
May 2005171045.226.65$7,733
Apr 2005113049.207.36$5,560
Mar 2005219050.377.15$11,031
Feb 2005215045.226.31$9,722
Jan 2005111043.166.32$4,791
Dec 2004202039.866.75$8,052
Nov 2004223045.286.33$10,097
Oct 2004202049.706.52$10,039
Sep 200498043.245.28$4,238
Aug 2004222042.375.55$9,406
Jul 2004211038.286.08$8,077
Jun 2004214036.106.43$7,725
May 2004218037.486.49$8,171
Apr 2004246034.475.86$8,480
Mar 2004240034.365.53$8,246
Feb 2004122032.455.51$3,959
Jan 2004245032.036.30$7,847
Dec 2003245030.266.30$7,414
Nov 2003125028.804.60$3,600
Oct 2003240028.174.76$6,761
Sep 2003113026.314.75$2,973
Aug 2003257029.765.13$7,648
Jul 2003258029.415.17$7,588
Jun 2003244028.565.98$6,969
May 20031402626.595.97$3,878
Apr 20032413226.675.41$6,601
Mar 2003255031.146.10$7,941
Feb 2003124033.487.93$4,152
Jan 2003368030.315.58$11,154
Dec 2002123026.914.85$3,310
Nov 2002242024.664.14$5,968
Oct 2002254026.464.23$6,721
Sep 2002121027.443.64$3,320
Aug 2002245025.963.16$6,360
Jul 2002244024.583.06$5,998
Jun 2002178023.733.34$4,224
May 2002259024.663.58$6,387
Apr 2002272023.653.51$6,433
Mar 2002261022.003.10$5,742
Feb 2002263018.222.38$4,792
Jan 2002265017.172.38$4,550
Dec 2001272016.932.36$4,605
Nov 2001256018.072.41$4,626
Oct 2001273019.782.53$5,400
Sep 2001255024.262.25$6,186
Aug 2001399024.873.05$9,923
Jul 2001275023.933.20$6,581
Jun 2001270024.563.82$6,631
May 2001404025.524.31$10,310
Apr 2001274024.685.34$6,762
Mar 2001412024.545.38$10,110
Feb 2001276027.755.77$7,659
Jan 2001251027.478.40$6,895
Dec 2000134026.889.12$3,602
Nov 2000269032.215.66$8,664
Oct 2000267031.235.15$8,338
Sep 2000262031.875.19$8,350
Aug 2000272029.644.54$8,062
Jul 2000267028.534.09$7,618
Jun 2000136029.304.40$3,985
May 2000381027.263.68$10,386
Apr 2000252024.513.12$6,177
Mar 2000257028.422.86$7,304
Feb 2000267027.622.73$7,375
Jan 2000133025.272.48$3,361
Dec 1999263024.282.42$6,386
Nov 1999276023.192.43$6,400
Oct 1999256020.982.80$5,371
Sep 1999270021.752.62$5,873
Aug 1999387019.262.88$7,454
Jul 1999275017.892.37$4,920
Jun 1999135015.942.36$2,152
May 1999394015.792.32$6,221
Apr 1999270015.102.21$4,077
Mar 1999272012.471.84$3,392
Feb 199928909.981.82$2,884
Jan 1999422010.381.90$4,380
Dec 199813909.201.77$1,279
Nov 1998412010.892.19$4,487
Oct 1998275012.421.97$3,416
Sep 1998280012.592.08$3,525
Aug 1998405011.301.91$4,577
Jul 1998282011.742.24$3,311
Jun 1998408011.242.24$4,586
May 1998283012.622.21$3,571
Apr 1998417013.042.51$5,438
Mar 1998281012.802.31$3,597
Feb 1998424013.952.30$5,915
Jan 1998281014.702.15$4,131
Dec 1997365016.322.41$5,957
Nov 1997243018.193.09$4,420
Oct 1997373019.253.15$7,180
Sep 1997248017.742.95$4,400
Aug 1997359017.862.55$6,412
Jul 1997330017.582.25$5,801
Jun 1997323017.242.26$5,569
May 1997236018.972.31$4,477
Apr 1997333017.882.08$5,954
Mar 1997344018.951.94$6,519
Feb 1997232020.492.21$4,754
Jan 1997337023.483.54$7,913
Dec 1996352023.32$8,209
Nov 1996335021.97$7,360
Oct 1996338023.31$7,879
Sep 1996327022.22$7,266
Aug 1996439020.26$8,894
Jul 1996333019.55$6,510
Jun 1996324018.73$6,069
May 1996426019.43$8,277
Apr 1996439021.51$9,443
Mar 1996431019.38$8,353
Feb 1996281016.98$4,771
Jan 1996423017.07$7,221
Dec 1995502017.19$8,629
Nov 1995316016.00$5,056
Oct 1995527015.43$8,132
Sep 1995449016.18$7,265
Aug 1995552015.92$8,788
Jul 1995445015.24$6,782
Jun 1995396016.41$6,498
May 1995474017.56$8,323
Apr 1995479017.73$8,493
Mar 1995478016.44$7,858
Feb 1995381016.58$6,317
Jan 1995669015.92$10,650
Dec 1994398015.03$5,982
Nov 1994703015.90$11,178
Oct 1994556015.58$8,662
Sep 1994781115.29$11,941
Aug 1994569116.13$9,178
Jul 1994572117.56$10,044
Jun 1994464117.09$7,930
May 1994774115.88$12,291
Apr 1994622114.14$8,795
Mar 1994666112.46$8,298
Feb 1994799112.50$9,988
Jan 1994771112.66$9,761
Dec 1993823112.33$10,148
Nov 1993504114.49$7,303
Oct 1993428115.85$6,784
Sep 1993251115.03$3,773
Aug 1993191115.66$2,991
Jul 1993265115.46$4,097
Jun 1993282116.79$4,735
May 1993167117.68$2,953
Apr 1993612118.05$11,047
Mar 1993382118.14$6,929
Feb 19930017.90$0
Jan 19930016.93$0

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.

Nov 2025 — as filed, then multipliedworked
Oil                  332 bbl  × $ 58.59 =    $19,452
Casinghead gas         0 Mcf  × $  3.93 =         $0

────────────────────────────────────────────────────
Month total                                  $19,452

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/66956 is the state's own key, not one this site invented.