WELCH, H. C. -A-

Operated by BLACKJACK EXTRACTION LLC (P-5 102825) in the THROCKMORTON COUNTY REGULAR field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 4821District 7BField 89812001OilCasinghead gasSaveExport
Value, all time
$934 k
Jan 1993 – May 2026
Value, last 12 filed months
$14 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 1,000 leases and 3,227 wells, and the rule below applies to all of them.

Discovered
1924-12-31
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

The Commission's schedule remark for this field reads: CLASS 4 W/DAILY 81 = 6000 TO 8000'

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
OilDisposition17,889 bbl$933,929
Casinghead gasProduction21 Mcf$0
Total$933,929

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 32.9819, -99.1144. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.7 miles.

32.98190, -99.11133 · 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
81.0%
17 of 21 wells
With a plug date
71.4%
15 of 21 wells
Median depth
360 ft
21 wells filed one
Completion to plug
9.7 years
median over 6 wells

What the state filed about each well

On the RRC proration schedule
1781.0%
A plug date is filed
1571.4%
BothOn the schedule and plugged. Neither fact cancels the other.
1571.4%
NeitherNo plug date, and not on the schedule.
419.0%

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, 21 of 21 wells. Median 360 ft, with the middle half between 342 and 390 ft; the shallowest is 300 ft and the deepest 440 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, 12 of 21 wells, Aug 1977 – Sep 1985. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Aug 1977 – Sep 1985
12 of 21 wells; 9 filed none
Plug dates filed
Sep 1978 – Nov 2006
15 of 21 wells; 6 filed none

Last completion to plug: a median of 9.7 years across the 6 wells that filed both dates, with the middle half between 7.7 years and 22.5 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

21 wells

42-4470147152440 ftAug 2003Yes
42-447803883342 ftSep 1978Yes
42-4478038911342 ftSep 1978Yes
42-4478039014342 ftSep 1978Yes
42-4478039116342 ftSep 1978Yes
42-447820287320 ftApr 1982Yes
42-447820298300 ftApr 1982Yes
42-447820444300 ftApr 1982Yes
42-447820701320 ftApr 1982Yes
42-4473444813 A390 ftSep 1985
42-4473444914 A390 ftSep 1985Jul 1990Yes
42-447319306 A370 ftDec 1982Jul 1990Yes
42-4473302311 A405 ftFeb 1982
42-4473302210 A412 ftFeb 1982
42-447330219 A405 ftFeb 1982
42-447323798 A300 ftSep 1980Nov 2006Yes
42-447323047 A402 ftAug 1980Yes
42-447318585 A360 ftMar 1979Jul 1990Yes
42-447317953 A390 ftDec 1978Nov 2006Yes
42-447318204 A385 ftNov 1978Yes
42-447314741 A344 ftAug 1977Aug 1985Yes

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 202635098.932.87$3,463
Mar 20260089.753.15$0
Feb 20260063.503.75$0
Jan 20260059.138.00$0
Dec 202550056.664.41$2,833
Nov 202541058.593.93$2,402
Oct 20250059.383.30$0
Sep 20250062.743.08$0
Aug 20250063.933.01$0
Jul 202526066.743.32$1,735
Jun 202554066.483.13$3,590
May 20250060.553.23$0
Apr 202547062.363.54$2,931
Mar 202543067.704.27$2,911
Feb 202545070.884.34$3,190
Jan 202565074.324.28$4,831
Dec 202481068.993.12$5,588
Nov 202463069.052.20$4,350
Oct 202461071.372.28$4,354
Sep 202443069.612.36$2,993
Aug 202458075.632.06$4,387
Jul 202461079.932.15$4,876
Jun 202464078.082.63$4,997
May 202458078.812.20$4,571
Apr 202462084.451.66$5,236
Mar 202447080.301.55$3,774
Feb 202456076.091.78$4,261
Jan 202461073.023.30$4,454
Dec 202364071.262.61$4,561
Nov 202361077.892.81$4,751
Oct 202364085.443.09$5,468
Sep 202371089.042.74$6,322
Aug 202356080.522.67$4,509
Jul 202362074.852.64$4,641
Jun 202352068.962.26$3,586
May 202361070.622.23$4,308
Apr 202364078.122.24$5,000
Mar 202364072.852.39$4,662
Feb 202344075.112.47$3,305
Jan 202364076.533.39$4,898
Dec 202261076.415.73$4,661
Nov 202265085.005.65$5,525
Oct 202265087.185.86$5,667
Sep 202280084.888.16$6,790
Aug 202259094.529.13$5,577
Jul 2022550101.587.54$5,587
Jun 2022590115.097.98$6,790
May 2022640109.378.43$7,000
Apr 2022570104.226.84$5,941
Mar 2022590108.885.08$6,424
Feb 202261091.054.86$5,554
Jan 202262081.844.54$5,074
Dec 202160071.323.90$4,279
Nov 202161077.435.24$4,723
Oct 202164079.795.71$5,107
Sep 202164069.865.35$4,471
Aug 202164066.024.22$4,225
Jul 202174070.783.98$5,238
Jun 202137069.493.38$2,571
May 202138063.483.02$2,412
Apr 202155060.362.76$3,320
Mar 202163061.302.72$3,862
Feb 202170057.805.55$4,046
Jan 202156050.412.81$2,823
Dec 202056044.642.68$2,500
Nov 202058038.772.71$2,249
Oct 202064036.972.48$2,366
Sep 202062037.091.99$2,300
Aug 202062039.982.39$2,479
Jul 202064038.371.83$2,456
Jun 202058034.901.69$2,024
May 202059016.921.81$998
Apr 202058014.751.80$856
Mar 202063030.341.86$1,911
Feb 202064049.881.98$3,192
Jan 202050057.252.09$2,863
Dec 201965059.012.30$3,836
Nov 201955055.302.75$3,042
Oct 201953053.472.42$2,834
Sep 201964055.052.66$3,523
Aug 201960053.112.30$3,187
Jul 201964056.272.46$3,601
Jun 201954052.782.49$2,850
May 201959058.482.74$3,450
Apr 201952062.632.75$3,257
Mar 201954056.803.06$3,067
Feb 201958050.852.79$2,949
Jan 2019122046.033.23$5,616
Dec 20180046.594.19$0
Nov 201865052.934.24$3,440
Oct 201862061.443.40$3,809
Sep 201881059.543.11$4,823
Aug 201866059.403.07$3,920
Jul 201863065.142.93$4,104
Jun 201862060.183.08$3,731
May 201862065.382.90$4,054
Apr 201861063.842.90$3,894
Mar 2018145061.222.79$8,877
Feb 20180061.782.77$0
Jan 2018122062.874.01$7,670
Dec 20170057.272.92$0
Nov 201776055.423.12$4,212
Oct 201764049.292.98$3,155
Sep 201782047.523.09$3,897
Aug 201762045.373.00$2,813
Jul 201752043.873.09$2,281
Jun 201782042.493.09$3,484
May 201764045.373.26$2,904
Apr 201782047.933.21$3,930
Mar 201776046.772.98$3,555
Feb 201771050.452.95$3,582
Jan 201765049.413.42$3,212
Dec 201664048.763.72$3,121
Nov 201662042.492.64$2,634
Oct 201662046.193.09$2,864
Sep 201680041.553.10$3,324
Aug 201662041.442.92$2,569
Jul 201661041.622.92$2,539
Jun 201650045.352.69$2,268
May 201680042.521.99$3,402
Apr 201664036.561.99$2,340
Mar 201676033.011.79$2,509
Feb 201662026.472.06$1,641
Jan 201682027.352.36$2,243
Dec 2015124032.362.00$4,013
Nov 20150038.792.17$0
Oct 201562043.552.43$2,700
Sep 201562042.992.76$2,665
Aug 201564040.162.87$2,570
Jul 201578048.152.95$3,756
Jun 2015109056.152.88$6,120
May 201564055.212.96$3,533
Apr 201519049.822.71$947
Mar 2015137042.892.93$5,876
Feb 20150044.662.98$0
Jan 201564043.433.10$2,780
Dec 201480054.693.59$4,375
Nov 201460070.464.25$4,228
Oct 201441078.303.90$3,210
Sep 201476086.164.05$6,548
Aug 201456089.394.04$5,006
Jul 201475096.564.18$7,242
Jun 201464098.164.74$6,282
May 201464094.734.73$6,063
Apr 201477095.944.81$7,387
Mar 201465095.895.06$6,233
Feb 201482097.406.19$7,987
Jan 201475090.404.86$6,780
Dec 20130091.824.35$0
Nov 201380088.853.74$7,108
Oct 201365097.423.78$6,332
Sep 2013640104.113.72$6,663
Aug 2013560104.253.52$5,838
Jul 2013640102.523.72$6,561
Jun 201363094.403.93$5,947
May 201365094.834.15$6,164
Apr 20130093.964.28$0
Mar 201358093.623.91$5,430
Feb 201383091.233.42$7,572
Jan 201382091.603.42$7,511
Dec 20120086.773.42$0
Nov 201282086.953.62$7,130
Oct 201284089.383.40$7,508
Sep 201282094.672.92$7,763
Aug 20120092.662.91$0
Jul 201256085.133.02$4,767
Jun 20120079.822.52$0
May 201252091.612.49$4,764
Apr 2012340101.652.00$3,456
Mar 2012490105.052.22$5,147
Feb 2012510101.102.57$5,156
Jan 201288098.092.73$8,632
Dec 20110096.873.24$0
Nov 201183095.723.31$7,945
Oct 20110084.983.65$0
Sep 201143083.623.99$3,596
Aug 201154083.404.15$4,504
Jul 201181094.144.52$7,625
Jun 20110092.904.64$0
May 20110098.134.40$0
Apr 2011160105.964.33$1,695
Mar 20110096.364.06$0
Feb 20110085.644.18$0
Jan 20110086.504.59$0
Dec 20100085.734.35$0
Nov 201040080.843.80$3,234
Oct 20100078.103.51$0
Sep 20100072.633.98$0
Aug 20100073.684.42$0
Jul 201055072.554.74$3,990
Jun 20100070.364.91$0
May 20100071.124.24$0
Apr 201063081.694.12$5,146
Mar 20100078.394.39$0
Feb 201022073.585.44$1,619
Jan 20100074.365.96$0
Dec 20090071.445.48$0
Nov 200928074.593.75$2,089
Oct 20090072.544.11$0
Sep 20090065.543.06$0
Aug 200940067.423.22$2,697
Jul 20090061.133.46$0
Jun 20090066.163.90$0
May 200944054.743.93$2,409
Apr 20090046.773.59$0
Mar 20090042.144.06$0
Feb 200946032.814.63$1,509
Jan 20090035.865.37$0
Dec 200877037.105.98$2,857
Nov 20080055.496.86$0
Oct 20080075.246.92$0
Sep 200800101.767.88$0
Aug 2008750114.228.48$8,567
Jul 200800131.0811.39$0
Jun 2008460131.3313.03$6,041
May 200800123.1711.57$0
Apr 2008840110.3110.45$9,266
Mar 200800101.909.66$0
Feb 20080092.538.77$0
Jan 200894090.388.21$8,496
Dec 200740088.337.30$3,533
Nov 20070091.677.29$0
Oct 200755082.856.92$4,557
Sep 200743075.846.24$3,261
Aug 20070069.066.39$0
Jul 20070070.906.39$0
Jun 20070062.007.55$0
May 200783058.747.85$4,875
Apr 20070059.617.81$0
Mar 20070056.927.30$0
Feb 200786055.108.22$4,739
Jan 20070050.306.73$0
Dec 20060056.656.92$0
Nov 20060054.207.62$0
Oct 200675054.906.01$4,118
Sep 20060060.085.04$0
Aug 20060068.717.34$0
Jul 200688069.376.34$6,105
Jun 20060066.286.38$0
May 200690066.016.42$5,941
Apr 20060064.397.36$0
Mar 20060056.707.08$0
Feb 20060057.597.75$0
Jan 200647060.598.93$2,848
Dec 200542054.9413.42$2,307
Nov 20050054.6910.59$0
Oct 200537058.3413.80$2,159
Sep 20050061.4512.08$0
Aug 200546061.519.80$2,829
Jul 20050055.697.84$0
Jun 200561052.337.38$3,192
May 20050045.226.65$0
Apr 200587049.207.36$4,280
Mar 200590050.377.15$4,533
Feb 20050045.226.31$0
Jan 20050043.166.32$0
Dec 200493039.866.75$3,707
Nov 20040045.286.33$0
Oct 20040049.706.52$0
Sep 200493043.245.28$4,021
Aug 20040042.375.55$0
Jul 200493038.286.08$3,560
Jun 20040036.106.43$0
May 200493037.486.49$3,486
Apr 20040034.475.86$0
Mar 200490034.365.53$3,092
Feb 20040032.455.51$0
Jan 20040032.036.30$0
Dec 20030030.266.30$0
Nov 200378028.804.60$2,246
Oct 20030028.174.76$0
Sep 200390026.314.75$2,368
Aug 20030029.765.13$0
Jul 200392029.415.17$2,706
Jun 20030028.565.98$0
May 20030026.595.97$0
Apr 20030026.675.41$0
Mar 200390031.146.10$2,803
Feb 20030033.487.93$0
Jan 20030030.315.58$0
Dec 200296026.914.85$2,583
Nov 20020024.664.14$0
Oct 20020026.464.23$0
Sep 200283027.443.64$2,278
Aug 200273025.963.16$1,895
Jul 20020024.583.06$0
Jun 200289023.733.34$2,112
May 20020024.663.58$0
Apr 200288023.653.51$2,081
Mar 20020022.003.10$0
Feb 20020018.222.38$0
Jan 20020017.172.38$0
Dec 200158016.932.36$982
Nov 200189018.072.41$1,608
Oct 20010019.782.53$0
Sep 20010024.262.25$0
Aug 200178024.873.05$1,940
Jul 20010023.933.20$0
Jun 20010024.563.82$0
May 200190025.524.31$2,297
Apr 200164024.685.34$1,580
Mar 20010024.545.38$0
Feb 200162027.755.77$1,721
Jan 20010027.478.40$0
Dec 20000026.889.12$0
Nov 20000032.215.66$0
Oct 200083031.235.15$2,592
Sep 200062031.875.19$1,976
Aug 20000029.644.54$0
Jul 200060028.534.09$1,712
Jun 20000029.304.40$0
May 200062027.263.68$1,690
Apr 200076024.513.12$1,863
Mar 200088028.422.86$2,501
Feb 20000027.622.73$0
Jan 200056025.272.48$1,415
Dec 19990024.282.42$0
Nov 199961023.192.43$1,415
Oct 199962020.982.80$1,301
Sep 19990021.752.62$0
Aug 199964019.262.88$1,233
Jul 199983017.892.37$1,485
Jun 199982015.942.36$1,307
May 199984015.792.32$1,326
Apr 199984015.102.21$1,268
Mar 199992012.471.84$1,147
Feb 1999009.981.82$0
Jan 19990010.381.90$0
Dec 19986309.201.77$580
Nov 199858010.892.19$632
Oct 199865012.421.97$807
Sep 19980012.592.08$0
Aug 199862011.301.91$701
Jul 19980011.742.24$0
Jun 19980011.242.24$0
May 199864012.622.21$808
Apr 199862013.042.51$808
Mar 1998139012.802.31$1,779
Feb 19980013.952.30$0
Jan 199863014.702.15$926
Dec 19970016.322.41$0
Nov 199763018.193.09$1,146
Oct 1997100019.253.15$1,925
Sep 19970017.742.95$0
Aug 199758017.862.55$1,036
Jul 199790017.582.25$1,582
Jun 19970017.242.26$0
May 19970018.972.31$0
Apr 199793017.882.08$1,663
Mar 199790018.951.94$1,706
Feb 19970020.492.21$0
Jan 199757023.483.54$1,338
Dec 199663023.32$1,469
Nov 199660021.97$1,318
Oct 1996124023.31$2,890
Sep 19960022.22$0
Aug 199665020.26$1,317
Jul 199661019.55$1,193
Jun 199663018.73$1,180
May 19960019.43$0
Apr 1996113021.51$2,431
Mar 19960019.38$0
Feb 19960016.98$0
Jan 19960017.07$0
Dec 1995100017.19$1,719
Nov 19950016.00$0
Oct 1995124015.43$1,913
Sep 19950016.18$0
Aug 19950015.92$0
Jul 19950015.24$0
Jun 1995117016.41$1,920
May 19950017.56$0
Apr 19950017.73$0
Mar 19950016.44$0
Feb 1995124016.58$2,056
Jan 19950015.92$0
Dec 19940015.03$0
Nov 19940015.90$0
Oct 1994123015.58$1,916
Sep 19940115.29$0
Aug 19940116.13$0
Jul 1994127117.56$2,230
Jun 19940117.09$0
May 19940115.88$0
Apr 1994125114.14$1,768
Mar 19940112.46$0
Feb 19940112.50$0
Jan 19940112.66$0
Dec 1993127112.33$1,566
Nov 19930114.49$0
Oct 1993125115.85$1,981
Sep 19930115.03$0
Aug 19930115.66$0
Jul 1993117115.46$1,809
Jun 19930116.79$0
May 1993126117.68$2,228
Apr 19930118.05$0
Mar 1993131118.14$2,376
Feb 19930117.90$0
Jan 19930116.93$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.

Apr 2026 — as filed, then multipliedworked
Oil                   35 bbl  × $ 98.93 =     $3,463
Casinghead gas         0 Mcf  × $  2.87 =         $0

────────────────────────────────────────────────────
Month total                                   $3,463

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. 7B/O/4821 is the state's own key, not one this site invented.