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BIRK

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

Oil lease lease 15516District 09Field 47902001OilCasinghead gasSaveExport
Value, all time
$387 k
Jan 1993 – May 2026
Value, last 12 filed months
$9 k
at the published price for each month
Months reported
401
no gaps in the span
Streams
2
oil, casinghead gas

The K-M-A field

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 347 leases and 2,190 wells, and the rule below applies to all of them.

Discovered
1931-12-31
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 20 acres.

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
OilDisposition14,348 bbl$387,494
Casinghead gasProduction19 Mcf$0
Total$387,494

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 33.9074, -98.6758. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.5 miles.

33.90658, -98.67590 · 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
50.0%
5 of 10 wells
With a plug date
50.0%
5 of 10 wells
Median depth
4,677 ft
8 wells filed one
Completion to plug
39.3 years
median over 1 well

What the state filed about each well

On the RRC proration schedule
550.0%
A plug date is filed
550.0%
BothOn the schedule and plugged. Neither fact cancels the other.
550.0%
NeitherNo plug date, and not on the schedule.
550.0%

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, 8 of 10 wells. Median 4,677 ft, with the middle half between 4,215 and 4,694 ft; the shallowest is 4,086 ft and the deepest 4,722 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, 4 of 10 wells, Jun 1969 – Jul 2012. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Jun 1969 – Jul 2012
4 of 10 wells; 6 filed none
Plug dates filed
Dec 2001 – Jun 2013
5 of 10 wells; 5 filed none

Last completion to plug: a median of 39.3 years across the 1 well that filed both dates, with the middle half between 39.3 years and 39.3 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

10 wells

42-485016792B4,722 ft—Oct 2008Yes
42-48501681114,701 ft—Dec 2001Yes
42-485129896BW4,115 ft—Oct 2008Yes
42-48591089134,692 ft—Jun 2013Yes
42-485910811W————
42-4859108710————
42-485910833B4,086 ftJul 2012——
42-4850167774,671 ftJan 2011——
42-4859108684,682 ftAug 1994——
42-485143085BW4,248 ftJun 1969Oct 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 2026100106.413.05$1,064
Apr 202610098.932.87$989
Mar 202610089.753.15$898
Feb 202610063.503.75$635
Jan 202610059.138.00$591
Dec 202510056.664.41$567
Nov 202510058.593.93$586
Oct 202510059.383.30$594
Sep 202510062.743.08$627
Aug 202510063.933.01$639
Jul 202510066.743.32$667
Jun 202510066.483.13$665
May 202510060.553.23$606
Apr 202510062.363.54$624
Mar 202510067.704.27$677
Feb 202510070.884.34$709
Jan 202510074.324.28$743
Dec 202410068.993.12$690
Nov 202418069.052.20$1,243
Oct 202418071.372.28$1,285
Sep 202417069.612.36$1,183
Aug 202417075.632.06$1,286
Jul 202417079.932.15$1,359
Jun 202416078.082.63$1,249
May 202417078.812.20$1,340
Apr 202417084.451.66$1,436
Mar 202425080.301.55$2,008
Feb 202416076.091.78$1,217
Jan 202417073.023.30$1,241
Dec 202316071.262.61$1,140
Nov 202324077.892.81$1,869
Oct 202317085.443.09$1,452
Sep 202316089.042.74$1,425
Aug 202316080.522.67$1,288
Jul 202325074.852.64$1,871
Jun 202317068.962.26$1,172
May 20238070.622.23$565
Apr 202317078.122.24$1,328
Mar 202316072.852.39$1,166
Feb 20238075.112.47$601
Jan 202316076.533.39$1,224
Dec 202216076.415.73$1,223
Nov 202216085.005.65$1,360
Oct 202216087.185.86$1,395
Sep 202215084.888.16$1,273
Aug 20228094.529.13$756
Jul 2022160101.587.54$1,625
Jun 2022160115.097.98$1,841
May 202270109.378.43$766
Apr 2022150104.226.84$1,563
Mar 2022240108.885.08$2,613
Feb 20228091.054.86$728
Jan 202217081.844.54$1,391
Dec 202116071.323.90$1,141
Nov 202116077.435.24$1,239
Oct 202117079.795.71$1,356
Sep 202116069.865.35$1,118
Aug 202116066.024.22$1,056
Jul 202116070.783.98$1,132
Jun 202116069.493.38$1,112
May 202116063.483.02$1,016
Apr 202116060.362.76$966
Mar 202116061.302.72$981
Feb 20218057.805.55$462
Jan 202117050.412.81$857
Dec 202016044.642.68$714
Nov 202016038.772.71$620
Oct 202021036.972.48$776
Sep 202016037.091.99$593
Aug 202015039.982.39$600
Jul 202017038.371.83$652
Jun 202016034.901.69$558
May 202016016.921.81$271
Apr 202015014.751.80$221
Mar 202016030.341.86$485
Feb 202016049.881.98$798
Jan 202016057.252.09$916
Dec 201916059.012.30$944
Nov 201916055.302.75$885
Oct 201916053.472.42$856
Sep 201924055.052.66$1,321
Aug 201916053.112.30$850
Jul 201916056.272.46$900
Jun 201923052.782.49$1,214
May 201916058.482.74$936
Apr 201917062.632.75$1,065
Mar 201917056.803.06$966
Feb 201917050.852.79$864
Jan 20197046.033.23$322
Dec 201816046.594.19$745
Nov 201822052.934.24$1,164
Oct 201817061.443.40$1,044
Sep 201816059.543.11$953
Aug 201817059.403.07$1,010
Jul 201816065.142.93$1,042
Jun 201815060.183.08$903
May 201825065.382.90$1,635
Apr 201816063.842.90$1,021
Mar 201825061.222.79$1,531
Feb 201817061.782.77$1,050
Jan 201817062.874.01$1,069
Dec 201726057.272.92$1,489
Nov 201716055.423.12$887
Oct 201716049.292.98$789
Sep 201725047.523.09$1,188
Aug 201725045.373.00$1,134
Jul 201716043.873.09$702
Jun 201717042.493.09$722
May 201717045.373.26$771
Apr 201716047.933.21$767
Mar 201717046.772.98$795
Feb 201716050.452.95$807
Jan 201717049.413.42$840
Dec 201625048.763.72$1,219
Nov 201617042.492.64$722
Oct 201617046.193.09$785
Sep 201617041.553.10$706
Aug 201616041.442.92$663
Jul 201625041.622.92$1,041
Jun 201616045.352.69$726
May 201625042.521.99$1,063
Apr 201617036.561.99$622
Mar 201626033.011.79$858
Feb 201617026.472.06$450
Jan 201617027.352.36$465
Dec 201516032.362.00$518
Nov 201516038.792.17$621
Oct 201516043.552.43$697
Sep 201525042.992.76$1,075
Aug 201525040.162.87$1,004
Jul 201525048.152.95$1,204
Jun 201516056.152.88$898
May 201525055.212.96$1,380
Apr 201517049.822.71$847
Mar 201534042.892.93$1,458
Feb 201516044.662.98$715
Jan 201525043.433.10$1,086
Dec 201417054.693.59$930
Nov 201417070.464.25$1,198
Oct 20148078.303.90$626
Sep 201416086.164.05$1,379
Aug 201425089.394.04$2,235
Jul 201416096.564.18$1,545
Jun 201425098.164.74$2,454
May 201417094.734.73$1,610
Apr 201425095.944.81$2,399
Mar 201417095.895.06$1,630
Feb 201425097.406.19$2,435
Jan 201425090.404.86$2,260
Dec 201317091.824.35$1,561
Nov 201325088.853.74$2,221
Oct 201317097.423.78$1,656
Sep 2013250104.113.72$2,603
Aug 2013170104.253.52$1,772
Jul 2013170102.523.72$1,743
Jun 201317094.403.93$1,605
May 201317094.834.15$1,612
Apr 201325093.964.28$2,349
Mar 201317093.623.91$1,592
Feb 201317091.233.42$1,551
Jan 201325091.603.42$2,290
Dec 201226086.773.42$2,256
Nov 20129086.953.62$783
Oct 201217089.383.40$1,519
Sep 201217094.672.92$1,609
Aug 201216092.662.91$1,483
Jul 201216085.133.02$1,362
Jun 201217079.822.52$1,357
May 20124091.612.49$366
Apr 201250101.652.00$508
Mar 201240105.052.22$420
Feb 201250101.102.57$506
Jan 20125098.092.73$490
Dec 20113096.873.24$291
Nov 20115095.723.31$479
Oct 20113084.983.65$255
Sep 20115083.623.99$418
Aug 20113083.404.15$250
Jul 20113094.144.52$282
Jun 20112092.904.64$186
May 20115098.134.40$491
Apr 201130105.964.33$318
Mar 20115096.364.06$482
Feb 20115085.644.18$428
Jan 201151086.504.59$4,412
Dec 20100085.734.35$0
Nov 20100080.843.80$0
Oct 20100078.103.51$0
Sep 20100072.633.98$0
Aug 20100073.684.42$0
Jul 20100072.554.74$0
Jun 20100070.364.91$0
May 20100071.124.24$0
Apr 20100081.694.12$0
Mar 20100078.394.39$0
Feb 20100073.585.44$0
Jan 20100074.365.96$0
Dec 20090071.445.48$0
Nov 20090074.593.75$0
Oct 20090072.544.11$0
Sep 20090065.543.06$0
Aug 20090067.423.22$0
Jul 20090061.133.46$0
Jun 20090066.163.90$0
May 20090054.743.93$0
Apr 20090046.773.59$0
Mar 20090042.144.06$0
Feb 20090032.814.63$0
Jan 20090035.865.37$0
Dec 20080037.105.98$0
Nov 20080055.496.86$0
Oct 20080075.246.92$0
Sep 200800101.767.88$0
Aug 200800114.228.48$0
Jul 200800131.0811.39$0
Jun 200800131.3313.03$0
May 200800123.1711.57$0
Apr 200800110.3110.45$0
Mar 200800101.909.66$0
Feb 20080092.538.77$0
Jan 20080090.388.21$0
Dec 20070088.337.30$0
Nov 20070091.677.29$0
Oct 20070082.856.92$0
Sep 20070075.846.24$0
Aug 20070069.066.39$0
Jul 20070070.906.39$0
Jun 20070062.007.55$0
May 20070058.747.85$0
Apr 20070059.617.81$0
Mar 20070056.927.30$0
Feb 20070055.108.22$0
Jan 20070050.306.73$0
Dec 20060056.656.92$0
Nov 20060054.207.62$0
Oct 20060054.906.01$0
Sep 20060060.085.04$0
Aug 20060068.717.34$0
Jul 20060069.376.34$0
Jun 20060066.286.38$0
May 20060066.016.42$0
Apr 20060064.397.36$0
Mar 20060056.707.08$0
Feb 20060057.597.75$0
Jan 20060060.598.93$0
Dec 20050054.9413.42$0
Nov 20050054.6910.59$0
Oct 20050058.3413.80$0
Sep 20050061.4512.08$0
Aug 20050061.519.80$0
Jul 20050055.697.84$0
Jun 20050052.337.38$0
May 20050045.226.65$0
Apr 20050049.207.36$0
Mar 20050050.377.15$0
Feb 20050045.226.31$0
Jan 20050043.166.32$0
Dec 20040039.866.75$0
Nov 20040045.286.33$0
Oct 20040049.706.52$0
Sep 20040043.245.28$0
Aug 20040042.375.55$0
Jul 20040038.286.08$0
Jun 20040036.106.43$0
May 20040037.486.49$0
Apr 20040034.475.86$0
Mar 20040034.365.53$0
Feb 20040032.455.51$0
Jan 20040032.036.30$0
Dec 20030030.266.30$0
Nov 20030028.804.60$0
Oct 20030028.174.76$0
Sep 20030026.314.75$0
Aug 20030029.765.13$0
Jul 20030029.415.17$0
Jun 20030028.565.98$0
May 20030026.595.97$0
Apr 20030026.675.41$0
Mar 20030031.146.10$0
Feb 20030033.487.93$0
Jan 20030030.315.58$0
Dec 20020026.914.85$0
Nov 20020024.664.14$0
Oct 20020026.464.23$0
Sep 20020027.443.64$0
Aug 20020025.963.16$0
Jul 20020024.583.06$0
Jun 20020023.733.34$0
May 20020024.663.58$0
Apr 20020023.653.51$0
Mar 20020022.003.10$0
Feb 20020018.222.38$0
Jan 20020017.172.38$0
Dec 20010016.932.36$0
Nov 20010018.072.41$0
Oct 20010019.782.53$0
Sep 20010024.262.25$0
Aug 20010024.873.05$0
Jul 20010023.933.20$0
Jun 20010024.563.82$0
May 20010025.524.31$0
Apr 20010024.685.34$0
Mar 20010024.545.38$0
Feb 20010027.755.77$0
Jan 20010027.478.40$0
Dec 20000026.889.12$0
Nov 20000032.215.66$0
Oct 20000031.235.15$0
Sep 20000031.875.19$0
Aug 20000029.644.54$0
Jul 20000028.534.09$0
Jun 20000029.304.40$0
May 20000027.263.68$0
Apr 20000024.513.12$0
Mar 20000028.422.86$0
Feb 20000027.622.73$0
Jan 20000025.272.48$0
Dec 19990024.282.42$0
Nov 19990023.192.43$0
Oct 19990020.982.80$0
Sep 19990021.752.62$0
Aug 19990019.262.88$0
Jul 19990017.892.37$0
Jun 19990015.942.36$0
May 19990015.792.32$0
Apr 19990015.102.21$0
Mar 19990012.471.84$0
Feb 1999009.981.82$0
Jan 199970010.381.90$727
Dec 1998009.201.77$0
Nov 1998103010.892.19$1,122
Oct 1998167012.421.97$2,074
Sep 1998230012.592.08$2,896
Aug 199889011.301.91$1,006
Jul 1998178011.742.24$2,090
Jun 1998178011.242.24$2,001
May 199887012.622.21$1,098
Apr 1998176013.042.51$2,295
Mar 1998181012.802.31$2,317
Feb 199888013.952.30$1,228
Jan 1998183014.702.15$2,690
Dec 1997181016.322.41$2,954
Nov 199791018.193.09$1,655
Oct 1997190019.253.15$3,658
Sep 1997189017.742.95$3,353
Aug 1997150017.862.55$2,679
Jul 1997149017.582.25$2,619
Jun 1997199017.242.26$3,431
May 1997197018.972.31$3,737
Apr 1997205017.882.08$3,665
Mar 1997184018.951.94$3,487
Feb 1997184020.492.21$3,770
Jan 1997147023.483.54$3,452
Dec 1996143023.32—$3,335
Nov 1996146021.97—$3,208
Oct 1996137023.31—$3,193
Sep 1996193022.22—$4,288
Aug 1996206020.26—$4,174
Jul 1996136019.55—$2,659
Jun 1996203018.73—$3,802
May 1996133019.43—$2,584
Apr 1996150021.51—$3,227
Mar 1996214019.38—$4,147
Feb 1996135016.98—$2,292
Jan 1996206017.07—$3,516
Dec 1995171017.19—$2,939
Nov 1995220016.00—$3,520
Oct 1995226015.43—$3,487
Sep 1995140016.18—$2,265
Aug 1995226015.92—$3,598
Jul 1995190015.24—$2,896
Jun 1995142016.41—$2,330
May 1995144017.56—$2,529
Apr 1995140017.73—$2,482
Mar 1995156016.44—$2,565
Feb 1995148016.58—$2,454
Jan 1995127015.92—$2,022
Dec 1994182015.03—$2,735
Nov 199494015.90—$1,495
Oct 1994127015.58—$1,979
Sep 1994234015.29—$3,578
Aug 1994136016.13—$2,194
Jul 1994135117.56—$2,371
Jun 199468117.09—$1,162
May 1994112115.88—$1,779
Apr 1994116114.14—$1,640
Mar 1994144112.46—$1,794
Feb 199471112.50—$888
Jan 1994145112.66—$1,836
Dec 1993263112.33—$3,243
Nov 1993177114.49—$2,565
Oct 1993235115.85—$3,725
Sep 1993225115.03—$3,382
Aug 1993168115.66—$2,631
Jul 199382115.46—$1,268
Jun 1993154116.79—$2,586
May 1993192117.68—$3,395
Apr 199384118.05—$1,516
Mar 1993156118.14—$2,830
Feb 1993175117.90—$3,133
Jan 199380116.93—$1,354

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                   10 bbl  × $106.41 =     $1,064
Casinghead gas         0 Mcf  × $  3.05 =         $0

────────────────────────────────────────────────────
Month total                                   $1,064

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/15516 is the state's own key, not one this site invented.