BIRK

Operated by HEYDRICK PETROLEUM COMPANY (P-5 383199) in the HAMMON (KMA ZONE 3) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 15515District 09Field 38553600OilCasinghead gasSaveExport
Value, all time
$5.9 M
Jan 1993 – May 2026
Value, last 12 filed months
$237 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 4 leases and 8 wells, and the rule below applies to all of them.

Discovered
1951-02-19
as the register files it
Field class
Oil
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
OilDisposition93,875 bbl$5,923,929
Casinghead gasProduction19 Mcf$0
Total$5,923,929

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 (3)

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 33.9085, -98.6782. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.2 miles.

33.90836, -98.67773 · 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%
1 of 3 wells
With a plug date
33.3%
1 of 3 wells
Median depth
4,464 ft
2 wells filed one
Completion to plug
no well filed both dates

What the state filed about each well

On the RRC proration schedule
133.3%
A plug date is filed
133.3%
BothOn the schedule and plugged. Neither fact cancels the other.
133.3%
NeitherNo plug date, and not on the schedule.
266.7%

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 4,138 and 4,789 ft, median 4,464 ft, over the 2 wells that filed a depth.

Completions filed
Nov 2007
1 of 3 wells; 2 filed none
Plug dates filed
Oct 2008
1 of 3 wells; 2 filed none

3 wells

42-485016801B4,789 ftOct 2008Yes
42-485910794B4,138 ft
42-4850561614Nov 2007

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 20262770106.413.05$29,476
Apr 2026302098.932.87$29,877
Mar 2026305089.753.15$27,374
Feb 2026289063.503.75$18,352
Jan 2026305059.138.00$18,035
Dec 2025141056.664.41$7,989
Nov 2025301058.593.93$17,636
Oct 2025305059.383.30$18,111
Sep 2025140062.743.08$8,784
Aug 2025306063.933.01$19,563
Jul 2025315066.743.32$21,023
Jun 2025314066.483.13$20,875
May 2025302060.553.23$18,286
Apr 2025473062.363.54$29,496
Mar 2025309067.704.27$20,919
Feb 2025328070.884.34$23,249
Jan 2025328074.324.28$24,377
Dec 2024468068.993.12$32,287
Nov 2024318069.052.20$21,958
Oct 2024314071.372.28$22,410
Sep 2024311069.612.36$21,649
Aug 2024308075.632.06$23,294
Jul 2024298079.932.15$23,819
Jun 2024298078.082.63$23,268
May 2024307078.812.20$24,195
Apr 2024303084.451.66$25,588
Mar 2024450080.301.55$36,135
Feb 2024297076.091.78$22,599
Jan 2024301073.023.30$21,979
Dec 2023299071.262.61$21,307
Nov 2023429077.892.81$33,415
Oct 2023301085.443.09$25,717
Sep 2023300089.042.74$26,712
Aug 2023302080.522.67$24,317
Jul 2023450074.852.64$33,683
Jun 2023298068.962.26$20,550
May 2023149070.622.23$10,522
Apr 2023299078.122.24$23,358
Mar 2023295072.852.39$21,491
Feb 2023147075.112.47$11,041
Jan 2023292076.533.39$22,347
Dec 2022301076.415.73$22,999
Nov 2022296085.005.65$25,160
Oct 2022294087.185.86$25,631
Sep 2022286084.888.16$24,276
Aug 2022138094.529.13$13,044
Jul 20222950101.587.54$29,966
Jun 20222930115.097.98$33,721
May 20221400109.378.43$15,312
Apr 20222870104.226.84$29,911
Mar 20224420108.885.08$48,125
Feb 2022146091.054.86$13,293
Jan 2022304081.844.54$24,879
Dec 2021302071.323.90$21,539
Nov 2021302077.435.24$23,384
Oct 2021297079.795.71$23,698
Sep 2021300069.865.35$20,958
Aug 2021296066.024.22$19,542
Jul 2021299070.783.98$21,163
Jun 2021304069.493.38$21,125
May 2021294063.483.02$18,663
Apr 2021292060.362.76$17,625
Mar 2021290061.302.72$17,777
Feb 2021146057.805.55$8,439
Jan 2021304050.412.81$15,325
Dec 2020303044.642.68$13,526
Nov 2020304038.772.71$11,786
Oct 2020392036.972.48$14,492
Sep 2020302037.091.99$11,201
Aug 2020278039.982.39$11,114
Jul 2020296038.371.83$11,358
Jun 2020300034.901.69$10,470
May 2020305016.921.81$5,161
Apr 2020275014.751.80$4,056
Mar 2020296030.341.86$8,981
Feb 2020296049.881.98$14,764
Jan 2020297057.252.09$17,003
Dec 2019300059.012.30$17,703
Nov 2019301055.302.75$16,645
Oct 2019296053.472.42$15,827
Sep 2019438055.052.66$24,112
Aug 2019292053.112.30$15,508
Jul 2019302056.272.46$16,994
Jun 2019422052.782.49$22,273
May 2019307058.482.74$17,953
Apr 2019307062.632.75$19,227
Mar 2019313056.803.06$17,778
Feb 2019314050.852.79$15,967
Jan 2019145046.033.23$6,674
Dec 2018304046.594.19$14,163
Nov 2018419052.934.24$22,178
Oct 2018302061.443.40$18,555
Sep 2018295059.543.11$17,564
Aug 2018310059.403.07$18,414
Jul 2018299065.142.93$19,477
Jun 2018286060.183.08$17,211
May 2018456065.382.90$29,813
Apr 2018303063.842.90$19,344
Mar 2018445061.222.79$27,243
Feb 2018310061.782.77$19,152
Jan 2018306062.874.01$19,238
Dec 2017468057.272.92$26,802
Nov 2017302055.423.12$16,737
Oct 2017298049.292.98$14,688
Sep 2017452047.523.09$21,479
Aug 2017459045.373.00$20,825
Jul 2017306043.873.09$13,424
Jun 2017313042.493.09$13,299
May 2017305045.373.26$13,838
Apr 2017304047.933.21$14,571
Mar 2017306046.772.98$14,312
Feb 2017302050.452.95$15,236
Jan 2017304049.413.42$15,021
Dec 2016452048.763.72$22,040
Nov 2016306042.492.64$13,002
Oct 2016307046.193.09$14,180
Sep 2016309041.553.10$12,839
Aug 2016303041.442.92$12,556
Jul 2016452041.622.92$18,812
Jun 2016305045.352.69$13,832
May 2016455042.521.99$19,347
Apr 2016308036.561.99$11,260
Mar 2016464033.011.79$15,317
Feb 2016306026.472.06$8,100
Jan 2016308027.352.36$8,424
Dec 2015305032.362.00$9,870
Nov 2015297038.792.17$11,521
Oct 2015302043.552.43$13,152
Sep 2015451042.992.76$19,388
Aug 2015450040.162.87$18,072
Jul 2015457048.152.95$22,005
Jun 2015304056.152.88$17,070
May 2015458055.212.96$25,286
Apr 2015302049.822.71$15,046
Mar 2015608042.892.93$26,077
Feb 2015299044.662.98$13,353
Jan 2015460043.433.10$19,978
Dec 2014309054.693.59$16,899
Nov 2014308070.464.25$21,702
Oct 2014147078.303.90$11,510
Sep 2014305086.164.05$26,279
Aug 2014460089.394.04$41,119
Jul 2014302096.564.18$29,161
Jun 2014455098.164.74$44,663
May 2014302094.734.73$28,608
Apr 2014456095.944.81$43,749
Mar 2014314095.895.06$30,109
Feb 2014462097.406.19$44,999
Jan 2014459090.404.86$41,494
Dec 2013306091.824.35$28,097
Nov 2013459088.853.74$40,782
Oct 2013312097.423.78$30,395
Sep 20134630104.113.72$48,203
Aug 20133010104.253.52$31,379
Jul 20133050102.523.72$31,269
Jun 2013304094.403.93$28,698
May 2013298094.834.15$28,259
Apr 2013458093.964.28$43,034
Mar 2013317093.623.91$29,678
Feb 2013307091.233.42$28,008
Jan 2013460091.603.42$42,136
Dec 2012464086.773.42$40,261
Nov 2012152086.953.62$13,216
Oct 2012310089.383.40$27,708
Sep 2012304094.672.92$28,780
Aug 2012301092.662.91$27,891
Jul 2012284085.133.02$24,177
Jun 2012307079.822.52$24,505
May 2012306091.612.49$28,033
Apr 20124650101.652.00$47,267
Mar 20123130105.052.22$32,881
Feb 20124570101.102.57$46,203
Jan 2012467098.092.73$45,808
Dec 2011309096.873.24$29,933
Nov 2011467095.723.31$44,701
Oct 2011305084.983.65$25,919
Sep 2011456083.623.99$38,131
Aug 2011305083.404.15$25,437
Jul 2011304094.144.52$28,619
Jun 2011150092.904.64$13,935
May 2011458098.134.40$44,944
Apr 20113040105.964.33$32,212
Mar 2011454096.364.06$43,747
Feb 2011459085.644.18$39,309
Jan 2011415086.504.59$35,898
Dec 2010462085.734.35$39,607
Nov 2010302080.843.80$24,414
Oct 2010305078.103.51$23,821
Sep 2010305072.633.98$22,152
Aug 2010455073.684.42$33,524
Jul 2010302072.554.74$21,910
Jun 2010302070.364.91$21,249
May 2010457071.124.24$32,502
Apr 2010451081.694.12$36,842
Mar 2010301078.394.39$23,595
Feb 2010152073.585.44$11,184
Jan 2010458074.365.96$34,057
Dec 2009306071.445.48$21,861
Nov 2009454074.593.75$33,864
Oct 2009449072.544.11$32,570
Sep 2009453065.543.06$29,690
Aug 2009304067.423.22$20,496
Jul 2009451061.133.46$27,570
Jun 2009453066.163.90$29,970
May 2009299054.743.93$16,367
Apr 2009459046.773.59$21,467
Mar 2009610042.144.06$25,705
Feb 2009323032.814.63$10,598
Jan 2009468035.865.37$16,782
Dec 2008476037.105.98$17,660
Nov 2008479055.496.86$26,580
Oct 2008472075.246.92$35,513
Sep 20086480101.767.88$65,940
Aug 20086250114.228.48$71,388
Jul 20084590131.0811.39$60,166
Jun 20084730131.3313.03$62,119
May 20086110123.1711.57$75,257
Apr 20084710110.3110.45$51,956
Mar 20086300101.909.66$64,197
Feb 2008623092.538.77$57,646
Jan 2008773090.388.21$69,864
Dec 20071,102088.337.30$97,340
Nov 200744091.677.29$4,033
Oct 200741082.856.92$3,397
Sep 200742075.846.24$3,185
Aug 200744069.066.39$3,039
Jul 200744070.906.39$3,120
Jun 200743062.007.55$2,666
May 200745058.747.85$2,643
Apr 20070059.617.81$0
Mar 20070056.927.30$0
Feb 200744055.108.22$2,424
Jan 200745050.306.73$2,264
Dec 200644056.656.92$2,493
Nov 200645054.207.62$2,439
Oct 20060054.906.01$0
Sep 200642060.085.04$2,523
Aug 200643068.717.34$2,955
Jul 200644069.376.34$3,052
Jun 200643066.286.38$2,850
May 200643066.016.42$2,838
Apr 200643064.397.36$2,769
Mar 20060056.707.08$0
Feb 200645057.597.75$2,592
Jan 200644060.598.93$2,666
Dec 200543054.9413.42$2,362
Nov 200545054.6910.59$2,461
Oct 20050058.3413.80$0
Sep 200544061.4512.08$2,704
Aug 200544061.519.80$2,706
Jul 200544055.697.84$2,450
Jun 20050052.337.38$0
May 200543045.226.65$1,944
Apr 200544049.207.36$2,165
Mar 200545050.377.15$2,267
Feb 20050045.226.31$0
Jan 200544043.166.32$1,899
Dec 200444039.866.75$1,754
Nov 200445045.286.33$2,038
Oct 20040049.706.52$0
Sep 200443043.245.28$1,859
Aug 200443042.375.55$1,822
Jul 200444038.286.08$1,684
Jun 20040036.106.43$0
May 200443037.486.49$1,612
Apr 200443034.475.86$1,482
Mar 200446034.365.53$1,581
Feb 20040032.455.51$0
Jan 200447032.036.30$1,505
Dec 200346030.266.30$1,392
Nov 200345028.804.60$1,296
Oct 20030028.174.76$0
Sep 200343026.314.75$1,131
Aug 200344029.765.13$1,309
Jul 200341029.415.17$1,206
Jun 20030028.565.98$0
May 200345026.595.97$1,197
Apr 200344026.675.41$1,173
Mar 200345031.146.10$1,401
Feb 200344033.487.93$1,473
Jan 200346030.315.58$1,394
Dec 20020026.914.85$0
Nov 200244024.664.14$1,085
Oct 20020026.464.23$0
Sep 200244027.443.64$1,207
Aug 200243025.963.16$1,116
Jul 200244024.583.06$1,082
Jun 20020023.733.34$0
May 200243024.663.58$1,060
Apr 200293023.653.51$2,199
Mar 20020022.003.10$0
Feb 20020018.222.38$0
Jan 200290017.172.38$1,545
Dec 200172016.932.36$1,219
Nov 200182018.072.41$1,482
Oct 20010019.782.53$0
Sep 200160024.262.25$1,456
Aug 200159024.873.05$1,467
Jul 200157023.933.20$1,364
Jun 200157024.563.82$1,400
May 200156025.524.31$1,429
Apr 200158024.685.34$1,431
Mar 20010024.545.38$0
Feb 200159027.755.77$1,637
Jan 200161027.478.40$1,676
Dec 200060026.889.12$1,613
Nov 200059032.215.66$1,900
Oct 20000031.235.15$0
Sep 200061031.875.19$1,944
Aug 200062029.644.54$1,838
Jul 200062028.534.09$1,769
Jun 200062029.304.40$1,817
May 200053027.263.68$1,445
Apr 200051024.513.12$1,250
Mar 200053028.422.86$1,506
Feb 200046027.622.73$1,271
Jan 200039025.272.48$986
Dec 199952024.282.42$1,263
Nov 199973023.192.43$1,693
Oct 199929020.982.80$608
Sep 199958021.752.62$1,262
Aug 19990019.262.88$0
Jul 1999183017.892.37$3,274
Jun 19990015.942.36$0
May 19990015.792.32$0
Apr 1999186015.102.21$2,809
Mar 19990012.471.84$0
Feb 1999009.981.82$0
Jan 199980010.381.90$830
Dec 199813409.201.77$1,233
Nov 199865010.892.19$708
Oct 1998168012.421.97$2,087
Sep 1998104012.592.08$1,309
Aug 199855011.301.91$622
Jul 1998111011.742.24$1,303
Jun 1998111011.242.24$1,248
May 199854012.622.21$681
Apr 1998110013.042.51$1,434
Mar 1998113012.802.31$1,446
Feb 199855013.952.30$767
Jan 1998114014.702.15$1,676
Dec 1997113016.322.41$1,844
Nov 199757018.193.09$1,037
Oct 1997105019.253.15$2,021
Sep 1997105017.742.95$1,863
Aug 1997125017.862.55$2,233
Jul 1997124017.582.25$2,180
Jun 1997100017.242.26$1,724
May 199798018.972.31$1,859
Apr 1997102017.882.08$1,824
Mar 1997123018.951.94$2,331
Feb 1997123020.492.21$2,520
Jan 1997153023.483.54$3,592
Dec 1996159023.32$3,708
Nov 1996183021.97$4,021
Oct 1996172023.31$4,009
Sep 1996241022.22$5,355
Aug 1996258020.26$5,227
Jul 1996171019.55$3,343
Jun 1996254018.73$4,757
May 1996167019.43$3,245
Apr 1996187021.51$4,022
Mar 1996267019.38$5,174
Feb 1996168016.98$2,853
Jan 1996258017.07$4,404
Dec 1995171017.19$2,939
Nov 1995275016.00$4,400
Oct 1995281015.43$4,336
Sep 1995181016.18$2,929
Aug 1995226015.92$3,598
Jul 1995151015.24$2,301
Jun 1995242016.41$3,971
May 1995241017.56$4,232
Apr 1995165017.73$2,925
Mar 1995246016.44$4,044
Feb 1995189016.58$3,134
Jan 1995208015.92$3,311
Dec 1994170015.03$2,555
Nov 199494015.90$1,495
Oct 1994203015.58$3,163
Sep 1994126015.29$1,927
Aug 1994155016.13$2,500
Jul 1994141117.56$2,476
Jun 1994119117.09$2,034
May 1994208115.88$3,303
Apr 1994208114.14$2,941
Mar 1994121112.46$1,508
Feb 199460112.50$750
Jan 1994122112.66$1,545
Dec 1993321112.33$3,958
Nov 1993216114.49$3,130
Oct 1993156115.85$2,473
Sep 1993163115.03$2,450
Aug 1993213115.66$3,336
Jul 1993112115.46$1,732
Jun 1993230116.79$3,862
May 1993192117.68$3,395
Apr 1993111118.05$2,004
Mar 1993233118.14$4,227
Feb 1993214117.90$3,831
Jan 1993115116.93$1,947

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                  277 bbl  × $106.41 =    $29,476
Casinghead gas         0 Mcf  × $  3.05 =         $0

────────────────────────────────────────────────────
Month total                                  $29,476

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/15515 is the state's own key, not one this site invented.