SIRES

Operated by BYRD OPERATING COMPANY (P-5 118748) in the WELCH field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 63421District 8AField 96062001Hydrogen sulphide fieldOilCasinghead gasSaveExport
Value, all time
$7.4 M
Jan 1993 – May 2026
Value, last 12 filed months
$172 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 67 leases and 1,426 wells, and the rule below applies to all of them.

Discovered
1941-12-31
as the register files it
Field class
Oil
the register's own label
Between wells
0 ft
minimum
From a lease line
330 ft
minimum

A drilling unit in this field needs at least 20 acres. The field rule took effect on 2019-01-23.

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: REQUIRED

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
OilDisposition183,154 bbl$7,313,529
Casinghead gasProduction12,950 Mcf$50,962
Total$7,364,491

1,875 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 (6)

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 32.9617, -102.1057. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.3 miles.

32.96171, -102.10578 · 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
33.3%
2 of 6 wells
With a plug date
33.3%
2 of 6 wells
Median depth
4,943 ft
6 wells filed one
Completion to plug
22.9 years
median over 2 wells

What the state filed about each well

On the RRC proration schedule
233.3%
A plug date is filed
233.3%
BothOn the schedule and plugged. Neither fact cancels the other.
233.3%
NeitherNo plug date, and not on the schedule.
466.7%

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

Between 4,934 and 4,950 ft, median 4,943 ft, over the 6 wells that filed a depth.

Completions filed
Nov 1981 – Dec 1988
6 of 6 wells
Plug dates filed
Apr 2003 – Jan 2012
2 of 6 wells; 4 filed none

Last completion to plug: a median of 22.9 years across the 2 wells that filed both dates, with the middle half between 21.8 years and 24.0 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

6 wells

42-4453124064,950 ftDec 1988
42-4453095814,934 ftDec 1986Jan 2012Yes
42-4453110454,945 ftFeb 1983
42-4453107444,940 ftAug 1982Apr 2003Yes
42-4453104634,945 ftApr 1982
42-4453098924,940 ftNov 1981

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 20261700106.413.05$18,090
Apr 2026170098.932.87$16,818
Mar 2026339089.753.15$30,425
Feb 2026179063.503.75$11,367
Jan 20260059.138.00$0
Dec 2025179056.664.41$10,142
Nov 2025340058.593.93$19,921
Oct 2025170059.383.30$10,095
Sep 2025173062.743.08$10,854
Aug 2025169063.933.01$10,804
Jul 2025166066.743.32$11,079
Jun 2025331066.483.13$22,005
May 2025177060.553.23$10,717
Apr 2025175062.363.54$10,913
Mar 2025162067.704.27$10,967
Feb 2025171070.884.34$12,120
Jan 2025172074.324.28$12,783
Dec 2024353068.993.12$24,353
Nov 20240069.052.20$0
Oct 2024327071.372.28$23,338
Sep 2024163069.612.36$11,346
Aug 2024171075.632.06$12,933
Jul 2024179079.932.15$14,307
Jun 2024163078.082.63$12,727
May 2024336078.812.20$26,480
Apr 2024166084.451.66$14,019
Mar 2024169080.301.55$13,571
Feb 2024181076.091.78$13,772
Jan 2024340073.023.30$24,827
Dec 2023167071.262.61$11,900
Nov 2023173077.892.81$13,475
Oct 2023164085.443.09$14,012
Sep 2023163089.042.74$14,514
Aug 2023330080.522.67$26,572
Jul 2023168074.852.64$12,575
Jun 2023342068.962.26$23,584
May 20230070.622.23$0
Apr 2023332078.122.24$25,936
Mar 2023162072.852.39$11,802
Feb 2023168075.112.47$12,618
Jan 2023320076.533.39$24,490
Dec 2022164076.415.73$12,531
Nov 2022184085.005.65$15,640
Oct 2022163087.185.86$14,210
Sep 2022318084.888.16$26,992
Aug 2022159094.529.13$15,029
Jul 20221630101.587.54$16,558
Jun 20221590115.097.98$18,299
May 20223220109.378.43$35,217
Apr 20221620104.226.84$16,884
Mar 20221620108.885.08$17,639
Feb 2022326091.054.86$29,682
Jan 2022163081.844.54$13,340
Dec 2021162071.323.90$11,554
Nov 20211622577.435.24$12,675
Oct 20213222579.795.71$25,835
Sep 20211612569.865.35$11,381
Aug 20211642566.024.22$10,933
Jul 20213252570.783.98$23,103
Jun 20211712569.493.38$11,967
May 20211672563.483.02$10,677
Apr 20213272560.362.76$19,807
Mar 20211762561.302.72$10,857
Feb 20211612557.805.55$9,445
Jan 20213242550.412.81$16,403
Dec 20201612544.642.68$7,254
Nov 20203352538.772.71$13,056
Oct 20203332536.972.48$12,373
Sep 20201742537.091.99$6,503
Aug 20203392539.982.39$13,613
Jul 20201702538.371.83$6,569
Jun 202002534.901.69$42
May 202002516.921.81$45
Apr 20203512514.751.80$5,222
Mar 20201772530.341.86$5,417
Feb 20201752549.881.98$8,779
Jan 20203432557.252.09$19,689
Dec 20191852559.012.30$10,974
Nov 20191762555.302.75$9,802
Oct 20193592553.472.42$19,256
Sep 20191732555.052.66$9,590
Aug 20191792553.112.30$9,564
Jul 20193572556.272.46$20,150
Jun 20191742552.782.49$9,246
May 20193472558.482.74$20,361
Apr 20191802562.632.75$11,342
Mar 20191842556.803.06$10,528
Feb 20191862550.852.79$9,528
Jan 20191722546.033.23$7,998
Dec 20181752546.594.19$8,258
Nov 20183482552.934.24$18,526
Oct 20183652561.443.40$22,511
Sep 20181752559.543.11$10,497
Aug 20181832559.403.07$10,947
Jul 20183472565.142.93$22,677
Jun 20181742560.183.08$10,548
May 20181722565.382.90$11,318
Apr 20183492563.842.90$22,353
Mar 201802561.222.79$70
Feb 20183422561.782.77$21,198
Jan 20181742562.874.01$11,040
Dec 201702557.272.92$73
Nov 20173422555.423.12$19,032
Oct 20171742549.292.98$8,651
Sep 20171722547.523.09$8,251
Aug 20173472545.373.00$15,819
Jul 20171742543.873.09$7,711
Jun 20171642542.493.09$7,046
May 20173332545.373.26$15,190
Apr 20171722547.933.21$8,324
Mar 20171602546.772.98$7,558
Feb 20173572550.452.95$18,084
Jan 20171732549.413.42$8,633
Dec 20163562548.763.72$17,452
Nov 20161762542.492.64$7,544
Oct 20161772546.193.09$8,253
Sep 20163472541.553.10$14,495
Aug 20161752541.442.92$7,325
Jul 20163422541.622.92$14,307
Jun 20161782545.352.69$8,139
May 20163492542.521.99$14,889
Apr 20161752536.561.99$6,448
Mar 20161792533.011.79$5,954
Feb 20161732526.472.06$4,631
Jan 20163402527.352.36$9,358
Dec 20153422532.362.00$11,117
Nov 20151702538.792.17$6,648
Oct 20153402543.552.43$14,868
Sep 20151712542.992.76$7,420
Aug 20153422540.162.87$13,807
Jul 20151742548.152.95$8,452
Jun 20153232556.152.88$18,209
May 20151712555.212.96$9,515
Apr 20153182549.822.71$15,910
Mar 20153392542.892.93$14,613
Feb 201502544.662.98$74
Jan 20151712543.433.10$7,504
Dec 20143312554.693.59$18,192
Nov 20143202570.464.25$22,654
Oct 20141662578.303.90$13,095
Sep 20143402586.164.05$29,396
Aug 20141692589.394.04$15,208
Jul 20145082596.564.18$49,157
Jun 20143482598.164.74$34,278
May 20141652594.734.73$15,749
Apr 20141722595.944.81$16,622
Mar 20143352595.895.06$32,250
Feb 20143512597.406.19$34,342
Jan 20143302590.404.86$29,954
Dec 20131762591.824.35$16,269
Nov 20133432588.853.74$30,569
Oct 20133462597.423.78$33,802
Sep 201334425104.113.72$35,907
Aug 201335225104.253.52$36,784
Jul 201317825102.523.72$18,342
Jun 20133552594.403.93$33,610
May 20133382594.834.15$32,156
Apr 20131732593.964.28$16,362
Mar 20133362593.623.91$31,554
Feb 20133482591.233.42$31,834
Jan 20133372591.603.42$30,955
Dec 20124962586.773.42$43,123
Nov 20123282586.953.62$28,610
Oct 20121522589.383.40$13,671
Sep 20125372594.672.92$50,911
Aug 20123612592.662.91$33,523
Jul 20121822585.133.02$15,569
Jun 20125352579.822.52$42,767
May 20121792591.612.49$16,460
Apr 201235825101.652.00$36,441
Mar 201253725105.052.22$56,467
Feb 201235525101.102.57$35,955
Jan 20123572598.092.73$35,086
Dec 20113572596.873.24$34,664
Nov 20113522595.723.31$33,776
Oct 20115382584.983.65$45,810
Sep 20115162583.623.99$43,248
Aug 20113522583.404.15$29,461
Jul 20115302594.144.52$50,007
Jun 20113592592.904.64$33,467
May 20115392598.134.40$53,002
Apr 201135825105.964.33$38,042
Mar 20115352596.364.06$51,654
Feb 20111792585.644.18$15,434
Jan 20113442586.504.59$29,871
Dec 20103562585.734.35$30,629
Nov 20103472580.843.80$28,146
Oct 20103602578.103.51$28,204
Sep 20103432572.633.98$25,012
Aug 20103582573.684.42$26,488
Jul 20101802572.554.74$13,177
Jun 20103612570.364.91$25,523
May 20103572571.124.24$25,496
Apr 20103572581.694.12$29,266
Mar 20105352578.394.39$42,048
Feb 20103422573.585.44$25,300
Jan 20103572574.365.96$26,696
Dec 20093562571.445.48$25,570
Nov 20093562574.593.75$26,648
Oct 20093612572.544.11$26,290
Sep 20095382565.543.06$35,337
Aug 20095272567.423.22$35,611
Jul 20095252561.133.46$32,180
Jun 20095292566.163.90$35,096
May 20093552554.743.93$19,531
Apr 20093572546.773.59$16,787
Mar 20093532542.144.06$14,977
Feb 20091722532.814.63$5,759
Jan 20093562535.865.37$12,900
Dec 20083595037.105.98$13,618
Nov 20083595055.496.86$20,264
Oct 20081815075.246.92$13,965
Sep 200836050101.767.88$37,027
Aug 200817750114.228.48$20,641
Jul 200835650131.0811.39$47,234
Jun 200818150131.3313.03$24,422
May 2008050123.1711.57$579
Apr 200817850110.3110.45$20,158
Mar 2008050101.909.66$483
Feb 20081745092.538.77$16,539
Jan 20081785090.388.21$16,498
Dec 200715088.337.30$453
Nov 20071785091.677.29$16,682
Oct 20075375082.856.92$44,837
Sep 20073555075.846.24$27,235
Aug 20075335069.066.39$37,128
Jul 20073555070.906.39$25,489
Jun 20075335062.007.55$33,423
May 20075315058.747.85$31,583
Apr 20075425059.617.81$32,699
Mar 20075305056.927.30$30,533
Feb 20073445055.108.22$19,365
Jan 20071795050.306.73$9,340
Dec 20063525056.656.92$20,287
Nov 20065315054.207.62$29,161
Oct 20065205054.906.01$28,849
Sep 20063625060.085.04$22,001
Aug 20063625068.717.34$25,240
Jul 20065265069.376.34$36,806
Jun 20065215066.286.38$34,851
May 20063545066.016.42$23,689
Apr 20065285064.397.36$34,366
Mar 20065235056.707.08$30,008
Feb 20063595057.597.75$21,062
Jan 20065305060.598.93$32,559
Dec 20053435054.9413.42$19,515
Nov 20056975054.6910.59$38,648
Oct 20053445058.3413.80$20,759
Sep 20053325061.4512.08$21,005
Aug 20055105061.519.80$31,860
Jul 20054975055.697.84$28,070
Jun 20054955052.337.38$26,272
May 20054935045.226.65$22,626
Apr 20055075049.207.36$25,312
Mar 20055245050.377.15$26,752
Feb 20055095045.226.31$23,333
Jan 20055255043.166.32$22,975
Dec 20043505039.866.75$14,289
Nov 20045045045.286.33$23,138
Oct 20046775049.706.52$33,973
Sep 20044795043.245.28$20,976
Aug 20043505042.375.55$15,107
Jul 20043425038.286.08$13,396
Jun 20045175036.106.43$18,985
May 20045135037.486.49$19,552
Apr 20045265034.475.86$18,424
Mar 20045245034.365.53$18,281
Feb 20045195032.455.51$17,117
Jan 20045205032.036.30$16,971
Dec 20035255030.266.30$16,202
Nov 20033555028.804.60$10,454
Oct 20035325028.174.76$15,224
Sep 20035305026.314.75$14,182
Aug 20035345029.765.13$16,148
Jul 20035355029.415.17$15,993
Jun 20035395028.565.98$15,693
May 20033515026.595.97$9,632
Apr 20035215026.675.41$14,165
Mar 20035335031.146.10$16,902
Feb 20033505033.487.93$12,114
Jan 20033585030.315.58$11,130
Dec 20025345026.914.85$14,613
Nov 20023585024.664.14$9,035
Oct 20028875026.464.23$23,681
Sep 20023535027.443.64$9,868
Aug 20027075025.963.16$18,512
Jul 20025335024.583.06$13,254
Jun 20027075023.733.34$16,944
May 20025205024.663.58$13,002
Apr 20026985023.653.51$16,683
Mar 20026995022.003.10$15,533
Feb 20025125018.222.38$9,447
Jan 20027195017.172.38$12,464
Dec 20015395016.932.36$9,243
Nov 20016805018.072.41$12,408
Oct 20016985019.782.53$13,933
Sep 20015255024.262.25$12,849
Aug 20016895024.873.05$17,288
Jul 20016975023.933.20$16,839
Jun 20015225024.563.82$13,012
May 20016815025.524.31$17,594
Apr 20016985024.685.34$17,493
Mar 20016745024.545.38$16,809
Feb 20016775027.755.77$19,075
Jan 20016855027.478.40$19,237
Dec 20005215026.889.12$14,461
Nov 20006945032.215.66$22,637
Oct 20006815031.235.15$21,525
Sep 20005185031.875.19$16,768
Aug 20008525029.644.54$25,480
Jul 20006825028.534.09$19,662
Jun 20006805029.304.40$20,144
May 20006965027.263.68$19,157
Apr 20007055024.513.12$17,435
Mar 20003615028.422.86$10,403
Feb 20008785027.622.73$24,387
Jan 20006785025.272.48$17,257
Dec 19998245024.282.42$20,128
Nov 19994995023.192.43$11,694
Oct 19996765020.982.80$14,323
Sep 19998435021.752.62$18,466
Aug 19996785019.262.88$13,202
Jul 19996785017.892.37$12,248
Jun 19996555015.942.36$10,559
May 19998185015.792.32$13,032
Apr 19998315015.102.21$12,659
Mar 19996675012.471.84$8,409
Feb 1999673509.981.82$6,807
Jan 19998345010.381.90$8,752
Dec 1998846509.201.77$7,872
Nov 19986755010.892.19$7,460
Oct 19988855012.421.97$11,090
Sep 19986775012.592.08$8,628
Aug 19988355011.301.91$9,531
Jul 19988265011.742.24$9,809
Jun 19988195011.242.24$9,317
May 19986565012.622.21$8,389
Apr 19986735013.042.51$8,901
Mar 19981,0045012.802.31$12,967
Feb 19986375013.952.30$9,001
Jan 19986715014.702.15$9,971
Dec 19978335016.322.41$13,715
Nov 19978285018.193.09$15,216
Oct 19978305019.253.15$16,135
Sep 19978025017.742.95$14,375
Aug 19976805017.862.55$12,273
Jul 19979985017.582.25$17,657
Jun 19976655017.242.26$11,577
May 19979835018.972.31$18,763
Apr 19976695017.882.08$12,066
Mar 19971,0055018.951.94$19,142
Feb 19976615020.492.21$13,654
Jan 19978145023.483.54$19,290
Dec 19968195023.32$19,099
Nov 19968525021.97$18,718
Oct 19961,0175023.31$23,706
Sep 19968315022.22$18,465
Aug 19969555020.26$19,348
Jul 19967125019.55$13,920
Jun 19968375018.73$15,677
May 19961,1605019.43$22,539
Apr 19969725021.51$20,908
Mar 19968325019.38$16,124
Feb 19968345016.98$14,161
Jan 19968385017.07$14,305
Dec 19951,0025017.19$17,224
Nov 19959865016.00$15,776
Oct 19958265015.43$12,745
Sep 19958195016.18$13,251
Aug 19951,1405015.92$18,149
Jul 19959725015.24$14,813
Jun 19959885016.41$16,213
May 19958295017.56$14,557
Apr 19959835017.73$17,429
Mar 19958145016.44$13,382
Feb 19951,0075016.58$16,696
Jan 19958385015.92$13,341
Dec 19949835015.03$14,774
Nov 19941,1365015.90$18,062
Oct 19949785015.58$15,237
Sep 19949972515.29$15,244
Aug 19949872516.13$15,920
Jul 19949742517.56$17,103
Jun 19949702517.09$16,577
May 19949962515.88$15,816
Apr 19949742514.14$13,772
Mar 19941,1952512.46$14,890
Feb 19941,0332512.50$12,913
Jan 19941,0432512.66$13,204
Dec 19931,0402512.33$12,823
Nov 19931,1972514.49$17,345
Oct 19931,2242515.85$19,400
Sep 19931,0372515.03$15,586
Aug 19931,0372515.66$16,239
Jul 19931,0192515.46$15,754
Jun 19931,2122516.79$20,349
May 19931,0412517.68$18,405
Apr 19931,1842518.05$21,371
Mar 19931,0302518.14$18,684
Feb 19931,0512517.90$18,813
Jan 19931,2062516.93$20,418

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                  170 bbl  × $106.41 =    $18,090
Casinghead gas         0 Mcf  × $  3.05 =         $0

────────────────────────────────────────────────────
Month total                                  $18,090

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/63421 is the state's own key, not one this site invented.