CLARK, L. C.

Operated by GILSTRAP, JOEL (P-5 307219) in the CLARK (SAN ANDRES) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 618District 08Field 18593666OilCasinghead gasSave
Value, all time
$52.5 M
Jan 1993 – May 2026
Value, last 12 filed months
$1.1 M
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
OilDisposition1,252,383 bbl$52,547,595
Casinghead gasProduction145 Mcf$374
Total$52,547,969

48 Mcf of this lease's gas, across 48 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 (31)

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 31.6813, -100.8672. A lease has no coordinate of its own — that point is the mean of its wells, and they span 1.1 miles.

31.68051, -100.86744 · 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
32.3%
10 of 31 wells
With a plug date
19.4%
6 of 31 wells
Median depth
1,210 ft
31 wells filed one
Completion to plug
7.1 years
median over 3 wells

What the state filed about each well

On the RRC proration schedule
1032.3%
A plug date is filed
619.4%
BothOn the schedule and plugged. Neither fact cancels the other.
619.4%
NeitherNo plug date, and not on the schedule.
2167.7%

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, 31 of 31 wells. Median 1,210 ft, with the middle half between 1,188 and 1,373 ft; the shallowest is 1,048 ft and the deepest 1,711 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

60s
70s
80s
90s
00s
10s

Last completion by decade, 28 of 31 wells, Feb 1964 – Aug 2013. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Feb 1964 – Aug 2013
28 of 31 wells; 3 filed none
Plug dates filed
Nov 1993 – Mar 2007
6 of 31 wells; 25 filed none

Last completion to plug: a median of 7.1 years across the 3 wells that filed both dates, with the middle half between 6.2 years and 25.1 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

31 wells

42-43100480271,390 ftFeb 1994Yes
42-43100581191,048 ftNov 2000Yes
42-43130122261,084 ftNov 1993Yes
42-43133321421,206 ftAug 2013
42-43133320411,260 ftJun 2013
42-43133229401,286 ftMay 2013
42-43133055371,240 ftDec 2003
42-43133056361,375 ftSep 2003
42-4313300425A1,334 ftMay 2001
42-43100583211,204 ftNov 1994
42-43100585231,296 ftOct 1994
42-43100575121,176 ftAug 1994
42-43100576141,381 ftJul 1994Yes
42-4310056521,190 ftNov 1993
42-4310056311,222 ftNov 1993
42-4310057071,204 ftSep 1993
42-43100479251,115 ftApr 1993May 2000Yes
42-43100573101,185 ftMar 1993
42-4310056961,195 ftFeb 1993
42-4310056741,173 ftJan 1993
42-4310056631,711 ftNov 1992
42-43100586241,396 ftAug 1992Yes
42-43100584221,375 ftApr 1992Yes
42-43100574111,198 ftFeb 1992
42-4310057291,170 ftJan 1992
42-43100579171,370 ftJun 1991Yes
42-4310056851,191 ftAug 1990
42-4310057181,178 ftApr 1990
42-43100582201,210 ftOct 1989Jan 1995Yes
42-43131589311,375 ftApr 1985
42-43100481301,411 ftFeb 1964Mar 2007Yes

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 20261,2520106.413.05$133,225
Apr 20261,335098.932.87$132,072
Mar 2026805089.753.15$72,249
Feb 20261,357063.503.75$86,170
Jan 20261,172059.138.00$69,300
Dec 20251,174056.664.41$66,519
Nov 20251,422058.593.93$83,315
Oct 20251,317059.383.30$78,203
Sep 20251,542062.743.08$96,745
Aug 20251,135063.933.01$72,561
Jul 20251,156066.743.32$77,151
Jun 20251,463066.483.13$97,260
May 20251,290060.553.23$78,110
Apr 20251,280062.363.54$79,821
Mar 20251,637067.704.27$110,825
Feb 20251,097070.884.34$77,755
Jan 20251,620074.324.28$120,398
Dec 20241,625068.993.12$112,109
Nov 20241,454069.052.20$100,399
Oct 20241,456071.372.28$103,915
Sep 20241,468069.612.36$102,187
Aug 20241,309075.632.06$99,000
Jul 20241,627079.932.15$130,046
Jun 20241,449078.082.63$113,138
May 20241,458078.812.20$114,905
Apr 20241,413084.451.66$119,328
Mar 20241,442080.301.55$115,793
Feb 20241,447076.091.78$110,102
Jan 20241,468073.023.30$107,193
Dec 20231,440071.262.61$102,614
Nov 20231,436077.892.81$111,850
Oct 20231,434085.443.09$122,521
Sep 20231,444089.042.74$128,574
Aug 20231,447080.522.67$116,512
Jul 20231,459074.852.64$109,206
Jun 20231,471068.962.26$101,440
May 20231,458070.622.23$102,964
Apr 20231,453078.122.24$113,508
Mar 20231,441072.852.39$104,977
Feb 20231,471075.112.47$110,487
Jan 20231,468076.533.39$112,346
Dec 20221,460076.415.73$111,559
Nov 20221,472085.005.65$125,120
Oct 20221,460087.185.86$127,283
Sep 20221,441084.888.16$122,312
Aug 20221,459094.529.13$137,905
Jul 20221,4600101.587.54$148,307
Jun 20221,4570115.097.98$167,686
May 20221,4570109.378.43$159,352
Apr 20221,4610104.226.84$152,265
Mar 20221,6260108.885.08$177,039
Feb 20221,285091.054.86$116,999
Jan 20221,638081.844.54$134,054
Dec 20211,457071.323.90$103,913
Nov 20211,627077.435.24$125,979
Oct 20211,632079.795.71$130,217
Sep 20211,611069.865.35$112,544
Aug 20211,450066.024.22$95,729
Jul 20211,763070.783.98$124,785
Jun 20211,595069.493.38$110,837
May 20211,601063.483.02$101,631
Apr 20211,604060.362.76$96,817
Mar 20211,610061.302.72$98,693
Feb 20211,449057.805.55$83,752
Jan 20211,604050.412.81$80,858
Dec 20201,728044.642.68$77,138
Nov 20201,600038.772.71$62,032
Oct 20201,609036.972.48$59,485
Sep 20201,617037.091.99$59,975
Aug 20201,619039.982.39$64,728
Jul 20201,723038.371.83$66,112
Jun 20201,595034.901.69$55,666
May 20201,555016.921.81$26,311
Apr 20201,775014.751.80$26,181
Mar 20201,718030.341.86$52,124
Feb 20201,754049.881.98$87,490
Jan 20201,731057.252.09$99,100
Dec 20191,722059.012.30$101,615
Nov 20191,708055.302.75$94,452
Oct 20191,730053.472.42$92,503
Sep 20191,867055.052.66$102,778
Aug 20191,851053.112.30$98,307
Jul 20191,847056.272.46$103,931
Jun 20191,855052.782.49$97,907
May 20191,671058.482.74$97,720
Apr 20191,833062.632.75$114,801
Mar 20191,883056.803.06$106,954
Feb 20191,731050.852.79$88,021
Jan 20191,881046.033.23$86,582
Dec 20181,588046.594.19$73,985
Nov 20181,857052.934.24$98,291
Oct 20181,859061.443.40$114,217
Sep 20181,858059.543.11$110,625
Aug 20181,800059.403.07$106,920
Jul 20181,815065.142.93$118,229
Jun 20181,816060.183.08$109,287
May 20181,818065.382.90$118,861
Apr 20181,866063.842.90$119,125
Mar 20181,784061.222.79$109,216
Feb 20181,802061.782.77$111,328
Jan 20181,525062.874.01$95,877
Dec 20171,936057.272.92$110,875
Nov 20171,765055.423.12$97,816
Oct 20172,074049.292.98$102,227
Sep 20171,750047.523.09$83,160
Aug 20172,068045.373.00$93,825
Jul 20171,937043.873.09$84,976
Jun 20171,781042.493.09$75,675
May 20172,150045.373.26$97,546
Apr 20172,131047.933.21$102,139
Mar 20171,799046.772.98$84,139
Feb 20172,154050.452.95$108,669
Jan 20171,810049.413.42$89,432
Dec 20161,825048.763.72$88,987
Nov 20162,158042.492.64$91,693
Oct 20162,072046.193.09$95,706
Sep 20161,805041.553.10$74,998
Aug 20162,090041.442.92$86,610
Jul 20161,777041.622.92$73,959
Jun 20162,075045.352.69$94,101
May 20162,065042.521.99$87,804
Apr 20161,904036.561.99$69,610
Mar 20161,744033.011.79$57,569
Feb 20162,104026.472.06$55,693
Jan 20161,942027.352.36$53,114
Dec 20152,082032.362.00$67,374
Nov 20152,115038.792.17$82,041
Oct 20152,089043.552.43$90,976
Sep 20152,109042.992.76$90,666
Aug 20152,141040.162.87$85,983
Jul 20152,124048.152.95$102,271
Jun 20152,388056.152.88$134,086
May 20152,065055.212.96$114,009
Apr 20152,089049.822.71$104,074
Mar 20152,463042.892.93$105,638
Feb 20152,142044.662.98$95,662
Jan 20152,150043.433.10$93,375
Dec 20142,119054.693.59$115,888
Nov 20142,421070.464.25$170,584
Oct 20142,598078.303.90$203,423
Sep 20142,400086.164.05$206,784
Aug 20142,229089.394.04$199,250
Jul 20142,406096.564.18$232,323
Jun 20142,767098.164.74$271,609
May 20142,422094.734.73$229,436
Apr 20142,406095.944.81$230,832
Mar 20142,367095.895.06$226,972
Feb 20142,585097.406.19$251,779
Jan 20142,352090.404.86$212,621
Dec 20132,408091.824.35$221,103
Nov 20132,419088.853.74$214,928
Oct 20132,412097.423.78$234,977
Sep 20132,7520104.113.72$286,511
Aug 20133,0500104.253.52$317,963
Jul 20132,0550102.523.72$210,679
Jun 20132,070094.403.93$195,408
May 20132,895094.834.15$274,533
Apr 20132,070093.964.28$194,497
Mar 20132,074093.623.91$194,168
Feb 20132,091091.233.42$190,762
Jan 20132,407091.603.42$220,481
Dec 20122,042086.773.42$177,184
Nov 20122,027086.953.62$176,248
Oct 20122,332089.383.40$208,434
Sep 20121,950094.672.92$184,607
Aug 20122,286092.662.91$211,821
Jul 20122,380085.133.02$202,609
Jun 20122,707079.822.52$216,073
May 20121,733091.612.49$158,760
Apr 20122,4310101.652.00$247,111
Mar 20122,4260105.052.22$254,851
Feb 20122,0870101.102.57$210,996
Jan 20122,114098.092.73$207,362
Dec 20112,403096.873.24$232,779
Nov 20112,059095.723.31$197,087
Oct 20112,440084.983.65$207,351
Sep 20111,761083.623.99$147,255
Aug 20112,387083.404.15$199,076
Jul 20112,370094.144.52$223,112
Jun 20112,199092.904.64$204,287
May 20112,318098.134.40$227,465
Apr 20112,4810105.964.33$262,887
Mar 20112,505096.364.06$241,382
Feb 20112,069085.644.18$177,189
Jan 20112,240086.504.59$193,760
Dec 20102,536085.734.35$217,411
Nov 20102,552080.843.80$206,304
Oct 20102,718078.103.51$212,276
Sep 20102,350072.633.98$170,681
Aug 20102,705073.684.42$199,304
Jul 20102,228072.554.74$161,641
Jun 20102,370070.364.91$166,753
May 20102,530071.124.24$179,934
Apr 20102,509081.694.12$204,960
Mar 20102,170078.394.39$170,106
Feb 20102,227073.585.44$163,863
Jan 20102,314074.365.96$172,069
Dec 20092,488071.445.48$177,743
Nov 20092,494074.593.75$186,027
Oct 20092,366072.544.11$171,630
Sep 20092,332065.543.06$152,839
Aug 20092,660067.423.22$179,337
Jul 20092,548061.133.46$155,759
Jun 20092,809066.163.90$185,843
May 20092,462054.743.93$134,770
Apr 20092,506046.773.59$117,206
Mar 20092,490042.144.06$104,929
Feb 20092,532032.814.63$83,075
Jan 20092,488035.865.37$89,220
Dec 20082,828037.105.98$104,919
Nov 20082,513055.496.86$139,446
Oct 20082,647075.246.92$199,160
Sep 20082,7990101.767.88$284,826
Aug 20082,4420114.228.48$278,925
Jul 20083,1130131.0811.39$408,052
Jun 20082,3410131.3313.03$307,444
May 20082,8440123.1711.57$350,295
Apr 20082,6690110.3110.45$294,417
Mar 20082,4980101.909.66$254,546
Feb 20082,528092.538.77$233,916
Jan 20082,510090.388.21$226,854
Dec 20072,679088.337.30$236,636
Nov 20072,478091.677.29$227,158
Oct 20072,346082.856.92$194,366
Sep 20072,800075.846.24$212,352
Aug 20072,652069.066.39$183,147
Jul 20072,948070.906.39$209,013
Jun 20072,937062.007.55$182,094
May 20072,925058.747.85$171,815
Apr 20072,937059.617.81$175,075
Mar 20072,640056.927.30$150,269
Feb 20072,686055.108.22$147,999
Jan 20073,262050.306.73$164,079
Dec 20063,223056.656.92$182,583
Nov 20063,291054.207.62$178,372
Oct 20063,238054.906.01$177,766
Sep 20063,246060.085.04$195,020
Aug 20063,060068.717.34$210,253
Jul 20063,368069.376.34$233,638
Jun 20063,408066.286.38$225,882
May 20063,264066.016.42$215,457
Apr 20063,451064.397.36$222,210
Mar 20063,465056.707.08$196,466
Feb 20063,072057.597.75$176,916
Jan 20062,508060.598.93$151,960
Dec 20053,292054.9413.42$180,862
Nov 20053,202054.6910.59$175,117
Oct 20053,288058.3413.80$191,822
Sep 20053,299061.4512.08$202,724
Aug 20053,557061.519.80$218,791
Jul 20053,351055.697.84$186,617
Jun 20053,492052.337.38$182,736
May 20053,650045.226.65$165,053
Apr 20053,540049.207.36$174,168
Mar 20053,740050.377.15$188,384
Feb 20053,660145.226.31$165,512
Jan 20053,873043.166.32$167,159
Dec 20043,237139.866.75$129,034
Nov 20043,515145.286.33$159,166
Oct 20043,851149.706.52$191,401
Sep 20043,685143.245.28$159,345
Aug 20043,969142.375.55$168,172
Jul 20043,945138.286.08$151,021
Jun 20043,686136.106.43$133,071
May 20044,078137.486.49$152,850
Apr 20044,046134.475.86$139,471
Mar 20044,057134.365.53$139,404
Feb 20044,073132.455.51$132,174
Jan 20043,901132.036.30$124,955
Dec 20034,228130.266.30$127,946
Nov 20034,179128.804.60$120,360
Oct 20034,360128.174.76$122,826
Sep 20034,081126.314.75$107,376
Aug 20034,340129.765.13$129,164
Jul 20034,384129.415.17$128,939
Jun 20034,013128.565.98$114,617
May 20034,116126.595.97$109,450
Apr 20034,020126.675.41$107,219
Mar 20034,177131.146.10$130,078
Feb 20033,724133.487.93$124,687
Jan 20034,399130.315.58$133,339
Dec 20024,269126.914.85$114,884
Nov 20024,380124.664.14$108,015
Oct 20024,683126.464.23$123,916
Sep 20023,647127.443.64$100,077
Aug 20024,286125.963.16$111,268
Jul 20024,640124.583.06$114,054
Jun 20024,244123.733.34$100,713
May 20024,801124.663.58$118,396
Apr 20024,571123.653.51$108,108
Mar 20024,628122.003.10$101,819
Feb 20024,052118.222.38$73,830
Jan 20024,553117.172.38$78,177
Dec 20014,448116.932.36$75,307
Nov 20014,463118.072.41$80,649
Oct 20014,535119.782.53$89,705
Sep 20014,914124.262.25$119,216
Aug 20015,059124.873.05$125,820
Jul 20015,050123.933.20$120,850
Jun 20014,688124.563.82$115,141
May 20014,722125.524.31$120,510
Apr 20014,740124.685.34$116,989
Mar 20014,063124.545.38$99,711
Feb 20014,157127.755.77$115,363
Jan 20014,518127.478.40$124,118
Dec 20004,380126.889.12$117,744
Nov 20004,646132.215.66$149,653
Oct 20004,867131.235.15$152,002
Sep 20004,778131.875.19$152,280
Aug 20004,465129.644.54$132,347
Jul 20005,311128.534.09$151,527
Jun 20004,170129.304.40$122,185
May 20005,305127.263.68$144,618
Apr 20004,801124.513.12$117,676
Mar 20004,771128.422.86$135,595
Feb 20004,880127.622.73$134,788
Jan 20005,108125.272.48$129,082
Dec 19995,136124.282.42$124,705
Nov 19994,318123.192.43$100,137
Oct 19994,429120.982.80$92,923
Sep 19993,985121.752.62$86,676
Aug 19994,452119.262.88$85,748
Jul 19994,447117.892.37$79,559
Jun 19994,457115.942.36$71,047
May 19994,073115.792.32$64,315
Apr 19994,426115.102.21$66,835
Mar 19994,479112.471.84$55,855
Feb 19994,17619.981.82$41,678
Jan 19994,476110.381.90$46,463
Dec 19984,07019.201.77$37,446
Nov 19984,661110.892.19$50,760
Oct 19984,750112.421.97$58,997
Sep 19985,074112.592.08$63,884
Aug 19984,741111.301.91$53,575
Jul 19985,055111.742.24$59,348
Jun 19984,656111.242.24$52,336
May 19984,927112.622.21$62,181
Apr 19984,801113.042.51$62,608
Mar 19985,356112.802.31$68,559
Feb 19984,419113.952.30$61,647
Jan 19984,798114.702.15$70,533
Dec 19975,247116.322.41$85,633
Nov 19975,052118.193.09$91,899
Oct 19975,515119.253.15$106,167
Sep 19975,461117.742.95$96,881
Aug 19975,748117.862.55$102,662
Jul 19975,750117.582.25$101,087
Jun 19975,811117.242.26$100,184
May 19975,873118.972.31$111,413
Apr 19975,160117.882.08$92,263
Mar 19975,922118.951.94$112,224
Feb 19975,264120.492.21$107,862
Jan 19974,986123.483.54$117,075
Dec 19965,248123.32$122,383
Nov 19964,605121.97$101,172
Oct 19965,762123.31$134,312
Sep 19964,942122.22$109,811
Aug 19965,815120.26$117,812
Jul 19965,601119.55$109,500
Jun 19965,474118.73$102,528
May 19965,199119.43$101,017
Apr 19965,700121.51$122,607
Mar 19965,083119.38$98,509
Feb 19964,042116.98$68,633
Jan 19964,627117.07$78,983
Dec 19954,541117.19$78,060
Nov 19954,526116.00$72,416
Oct 19954,464115.43$68,880
Sep 19954,475116.18$72,406
Aug 19954,632115.92$73,741
Jul 19953,685115.24$56,159
Jun 19955,260116.41$86,317
May 19955,444117.56$95,597
Apr 19954,978117.73$88,260
Mar 19955,147116.44$84,617
Feb 19955,140116.58$85,221
Jan 19955,156115.92$82,084
Dec 19945,312115.03$79,839
Nov 19945,107115.90$81,201
Oct 19945,368115.58$83,633
Sep 19946,175115.29$94,416
Aug 19947,155116.13$115,410
Jul 19948,326117.56$146,205
Jun 19947,399117.09$126,449
May 19946,824115.88$108,365
Apr 19946,712114.14$94,908
Mar 19945,527112.46$68,866
Feb 19944,900112.50$61,250
Jan 19945,569112.66$70,504
Dec 19936,500112.33$80,145
Nov 19936,452114.49$93,489
Oct 19936,384115.85$101,186
Sep 19936,134115.03$92,194
Aug 19935,611115.66$87,868
Jul 19936,249115.46$96,610
Jun 19936,944116.79$116,590
May 19937,585117.68$134,103
Apr 19937,121118.05$128,534
Mar 19936,217118.14$112,776
Feb 19935,485117.90$98,182
Jan 19934,072116.93$68,939

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                1,252 bbl  × $106.41 =   $133,225
Casinghead gas         0 Mcf  × $  3.05 =         $0

────────────────────────────────────────────────────
Month total                                 $133,225

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. 08/O/618 is the state's own key, not one this site invented.