BYRD, K.W.

Operated by ENR OPERATING, LLC (P-5 253075) in the MARCELINA CREEK (AUSTIN CHALK) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 10561District 01Field 57367500Hydrogen sulphide fieldOilCasinghead gasSaveExport
Value, all time
$733 k
Jan 1993 – May 2026
Value, last 12 filed months
$0
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 164 leases and 198 wells, and the rule below applies to all of them.

Discovered
1980-10-09
as the register files it
Field class
Oil
the register's own label
Between wells
1,200 ft
minimum
From a lease line
467 ft
minimum

A drilling unit in this field needs at least 80 acres.

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: 80 ACRES OP. 3250 DIAG.

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
OilDisposition20,395 bbl$733,073
Casinghead gasProduction163 Mcf$260
Total$733,334

93 Mcf of this lease's gas, across 42 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 (1)

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 29.0866, -98.1142. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.0 miles.

29.08656, -98.11419 · 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
100.0%
1 of 1 wells
With a plug date
100.0%
1 of 1 wells
Median depth
6,554 ft
1 wells filed one
Completion to plug
39.0 years
median over 1 well

What the state filed about each well

On the RRC proration schedule
1100.0%
A plug date is filed
1100.0%
BothOn the schedule and plugged. Neither fact cancels the other.
1100.0%
NeitherNo plug date, and not on the schedule.
00.0%

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

The one well that filed a depth was drilled to 6,554 ft.

Completions filed
Aug 1985
1 of 1 wells
Plug dates filed
Aug 2024
1 of 1 wells

Last completion to plug: a median of 39.0 years across the 1 well that filed both dates, with the middle half between 39.0 years and 39.0 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

1 well

42-4933175016,554 ftAug 1985Aug 2024Yes

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 20260098.932.87$0
Mar 20260089.753.15$0
Feb 20260063.503.75$0
Jan 20260059.138.00$0
Dec 20250056.664.41$0
Nov 20250058.593.93$0
Oct 20250059.383.30$0
Sep 20250062.743.08$0
Aug 20250063.933.01$0
Jul 20250066.743.32$0
Jun 20250066.483.13$0
May 20250060.553.23$0
Apr 20250062.363.54$0
Mar 2025275067.704.27$18,618
Feb 20250070.884.34$0
Jan 20250074.324.28$0
Dec 20240068.993.12$0
Nov 20240069.052.20$0
Oct 20240071.372.28$0
Sep 20240069.612.36$0
Aug 20240075.632.06$0
Jul 20240079.932.15$0
Jun 20240078.082.63$0
May 20240078.812.20$0
Apr 20240084.451.66$0
Mar 20240080.301.55$0
Feb 20240076.091.78$0
Jan 20240073.023.30$0
Dec 20230071.262.61$0
Nov 20230077.892.81$0
Oct 20230085.443.09$0
Sep 20230089.042.74$0
Aug 20230080.522.67$0
Jul 20230074.852.64$0
Jun 20230068.962.26$0
May 20230070.622.23$0
Apr 20230078.122.24$0
Mar 20230072.852.39$0
Feb 20230075.112.47$0
Jan 20230076.533.39$0
Dec 20220076.415.73$0
Nov 20220085.005.65$0
Oct 20220087.185.86$0
Sep 20220084.888.16$0
Aug 20220094.529.13$0
Jul 202200101.587.54$0
Jun 202200115.097.98$0
May 202200109.378.43$0
Apr 202200104.226.84$0
Mar 202200108.885.08$0
Feb 20220091.054.86$0
Jan 20220081.844.54$0
Dec 20210071.323.90$0
Nov 20210077.435.24$0
Oct 20210079.795.71$0
Sep 20210069.865.35$0
Aug 20210066.024.22$0
Jul 20210070.783.98$0
Jun 20210069.493.38$0
May 20210063.483.02$0
Apr 20210060.362.76$0
Mar 20210061.302.72$0
Feb 20210057.805.55$0
Jan 20210050.412.81$0
Dec 20200044.642.68$0
Nov 20200038.772.71$0
Oct 20200036.972.48$0
Sep 20200037.091.99$0
Aug 20200039.982.39$0
Jul 20200038.371.83$0
Jun 20200034.901.69$0
May 20200016.921.81$0
Apr 20200014.751.80$0
Mar 20200030.341.86$0
Feb 20200049.881.98$0
Jan 20200057.252.09$0
Dec 20190059.012.30$0
Nov 20190055.302.75$0
Oct 20190053.472.42$0
Sep 20190055.052.66$0
Aug 20190053.112.30$0
Jul 20190056.272.46$0
Jun 20190052.782.49$0
May 20190058.482.74$0
Apr 20190062.632.75$0
Mar 20190056.803.06$0
Feb 20190050.852.79$0
Jan 20190046.033.23$0
Dec 20180046.594.19$0
Nov 20180052.934.24$0
Oct 20180061.443.40$0
Sep 20180059.543.11$0
Aug 20180059.403.07$0
Jul 20180065.142.93$0
Jun 20180060.183.08$0
May 20180065.382.90$0
Apr 20180063.842.90$0
Mar 20180061.222.79$0
Feb 20180061.782.77$0
Jan 20180062.874.01$0
Dec 2017128057.272.92$7,331
Nov 20170055.423.12$0
Oct 20170049.292.98$0
Sep 20170047.523.09$0
Aug 20170045.373.00$0
Jul 20170043.873.09$0
Jun 20170042.493.09$0
May 20170045.373.26$0
Apr 20170047.933.21$0
Mar 20170046.772.98$0
Feb 20170050.452.95$0
Jan 20170049.413.42$0
Dec 20160048.763.72$0
Nov 20160042.492.64$0
Oct 20160046.193.09$0
Sep 2016155041.553.10$6,440
Aug 20160041.442.92$0
Jul 20160041.622.92$0
Jun 201696045.352.69$4,354
May 20160042.521.99$0
Apr 20160036.561.99$0
Mar 20160033.011.79$0
Feb 20160026.472.06$0
Jan 20160027.352.36$0
Dec 20150032.362.00$0
Nov 20150038.792.17$0
Oct 20150043.552.43$0
Sep 2015124042.992.76$5,331
Aug 20150040.162.87$0
Jul 2015152048.152.95$7,319
Jun 20150056.152.88$0
May 2015155055.212.96$8,558
Apr 20150049.822.71$0
Mar 20150042.892.93$0
Feb 2015141044.662.98$6,297
Jan 2015144043.433.10$6,254
Dec 2014145054.693.59$7,930
Nov 20140070.464.25$0
Oct 20140078.303.90$0
Sep 20140086.164.05$0
Aug 20140089.394.04$0
Jul 20140096.564.18$0
Jun 20140098.164.74$0
May 20140094.734.73$0
Apr 20140095.944.81$0
Mar 20140095.895.06$0
Feb 2014148097.406.19$14,415
Jan 20140090.404.86$0
Dec 2013146091.824.35$13,406
Nov 20130088.853.74$0
Oct 20130097.423.78$0
Sep 201300104.113.72$0
Aug 20131520104.253.52$15,846
Jul 20131490102.523.72$15,275
Jun 20130094.403.93$0
May 20130094.834.15$0
Apr 20130093.964.28$0
Mar 2013152093.623.91$14,230
Feb 2013142091.233.42$12,955
Jan 2013145091.603.42$13,282
Dec 20120086.773.42$0
Nov 20120086.953.62$0
Oct 20120089.383.40$0
Sep 20120094.672.92$0
Aug 20120092.662.91$0
Jul 20120085.133.02$0
Jun 20120079.822.52$0
May 20120091.612.49$0
Apr 201200101.652.00$0
Mar 20121480105.052.22$15,547
Feb 201200101.102.57$0
Jan 2012124098.092.73$12,163
Dec 20110096.873.24$0
Nov 20110095.723.31$0
Oct 20110084.983.65$0
Sep 2011148083.623.99$12,376
Aug 20110083.404.15$0
Jul 2011144094.144.52$13,556
Jun 20110092.904.64$0
May 2011302098.134.40$29,635
Apr 201100105.964.33$0
Mar 20110096.364.06$0
Feb 20110085.644.18$0
Jan 2011155086.504.59$13,408
Dec 20100085.734.35$0
Nov 2010332080.843.80$26,839
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 2010154081.694.12$12,580
Mar 20100078.394.39$0
Feb 20100073.585.44$0
Jan 2010159074.365.96$11,823
Dec 20090071.445.48$0
Nov 2009168074.593.75$12,531
Oct 2009156072.544.11$11,316
Sep 20090065.543.06$0
Aug 2009160067.423.22$10,787
Jul 2009160061.133.46$9,781
Jun 20090066.163.90$0
May 2009155054.743.93$8,485
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 2008500110.3110.45$5,516
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 2005159054.9413.42$8,735
Nov 2005153054.6910.59$8,368
Oct 2005136058.3413.80$7,934
Sep 2005157061.4512.08$9,648
Aug 20050061.519.80$0
Jul 2005178055.697.84$9,913
Jun 20050052.337.38$0
May 20050045.226.65$0
Apr 20050049.207.36$0
Mar 20050050.377.15$0
Feb 2005147045.226.31$6,647
Jan 20050043.166.32$0
Dec 2004161039.866.75$6,417
Nov 20040145.286.33$6
Oct 2004145149.706.52$7,213
Sep 20040043.245.28$0
Aug 2004151042.375.55$6,398
Jul 20040038.286.08$0
Jun 2004118036.106.43$4,260
May 2004163037.486.49$6,109
Apr 2004147034.475.86$5,067
Mar 2004162034.365.53$5,566
Feb 2004338032.455.51$10,968
Jan 20040132.036.30$6
Dec 20030130.266.30$6
Nov 20030128.804.60$5
Oct 20030128.174.76$5
Sep 20030126.314.75$5
Aug 2003178129.765.13$5,302
Jul 20030129.415.17$5
Jun 2003160128.565.98$4,576
May 20030126.595.97$6
Apr 2003171126.675.41$4,566
Mar 20030031.146.10$0
Feb 2003161133.487.93$5,398
Jan 2003165130.315.58$5,007
Dec 20020126.914.85$5
Nov 2002161124.664.14$3,974
Oct 20020026.464.23$0
Sep 2002171027.443.64$4,692
Aug 20020025.963.16$0
Jul 2002332024.583.06$8,161
Jun 20020023.733.34$0
May 2002157024.663.58$3,872
Apr 20020023.653.51$0
Mar 2002152122.003.10$3,347
Feb 20020118.222.38$2
Jan 20020117.172.38$2
Dec 20010116.932.36$2
Nov 20010118.072.41$2
Oct 20010119.782.53$3
Sep 20010124.262.25$2
Aug 20010124.873.05$3
Jul 20010123.933.20$3
Jun 2001150124.563.82$3,688
May 2001153125.524.31$3,909
Apr 20010124.685.34$5
Mar 20010124.545.38$5
Feb 20010127.755.77$6
Jan 20010127.478.40$8
Dec 20000126.889.12$9
Nov 20000132.215.66$6
Oct 2000150131.235.15$4,690
Sep 20000131.875.19$5
Aug 20000129.644.54$5
Jul 2000133128.534.09$3,799
Jun 20000129.304.40$4
May 2000100127.263.68$2,730
Apr 200079124.513.12$1,939
Mar 20000028.422.86$0
Feb 20000027.622.73$0
Jan 2000157025.272.48$3,967
Dec 19990024.282.42$0
Nov 1999167023.192.43$3,873
Oct 19990020.982.80$0
Sep 1999150021.752.62$3,263
Aug 1999159019.262.88$3,062
Jul 19990017.892.37$0
Jun 19990115.942.36$2
May 1999157115.792.32$2,481
Apr 1999161115.102.21$2,433
Mar 19990112.471.84$2
Feb 199915719.981.82$1,569
Jan 19990110.381.90$2
Dec 199812719.201.77$1,170
Nov 19980110.892.19$2
Oct 1998151112.421.97$1,877
Sep 19980112.592.08$2
Aug 1998160111.301.91$1,810
Jul 1998137111.742.24$1,611
Jun 19980111.242.24$2
May 1998160112.622.21$2,021
Apr 1998159113.042.51$2,076
Mar 1998164112.802.31$2,102
Feb 19980113.952.30$2
Jan 1998139114.702.15$2,045
Dec 1997155116.322.41$2,532
Nov 19970118.193.09$3
Oct 1997162119.253.15$3,122
Sep 19970117.742.95$3
Aug 1997141117.862.55$2,521
Jul 1997165117.582.25$2,903
Jun 1997154117.242.26$2,657
May 19970118.972.31$2
Apr 1997149117.882.08$2,666
Mar 1997166118.951.94$3,148
Feb 19970120.492.21$2
Jan 1997170123.483.54$3,995
Dec 1996152123.32$3,545
Nov 19960121.97$0
Oct 1996154123.31$3,590
Sep 1996166122.22$3,689
Aug 1996176120.26$3,566
Jul 19960119.55$0
Jun 1996128118.73$2,397
May 1996146119.43$2,837
Apr 1996158121.51$3,399
Mar 1996178119.38$3,450
Feb 1996183116.98$3,107
Jan 19960117.07$0
Dec 1995121117.19$2,080
Nov 1995338116.00$5,408
Oct 1995160115.43$2,469
Sep 19950116.18$0
Aug 1995147115.92$2,340
Jul 1995145115.24$2,210
Jun 1995355116.41$5,826
May 1995164117.56$2,880
Apr 19950117.73$0
Mar 1995189116.44$3,107
Feb 1995190116.58$3,150
Jan 1995361115.92$5,747
Dec 19940115.03$0
Nov 1994190115.90$3,021
Oct 1994176115.58$2,742
Sep 1994533115.29$8,150
Aug 19940116.13$0
Jul 1994134017.56$2,353
Jun 19940017.09$0
May 19940015.88$0
Apr 19940014.14$0
Mar 19940012.46$0
Feb 19940012.50$0
Jan 1994139712.66$1,760
Dec 1993120312.33$1,480
Nov 19930314.49$0
Oct 1993157415.85$2,488
Sep 1993145315.03$2,179
Aug 1993157515.66$2,459
Jul 1993495815.46$7,653
Jun 19931416.79$17
May 1993178717.68$3,147
Apr 1993334518.05$6,029
Mar 1993167518.14$3,029
Feb 1993170517.90$3,043
Jan 1993169516.93$2,861

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.

Mar 2025 — as filed, then multipliedworked
Oil                  275 bbl  × $ 67.70 =    $18,618
Casinghead gas         0 Mcf  × $  4.27 =         $0

────────────────────────────────────────────────────
Month total                                  $18,618

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. 01/O/10561 is the state's own key, not one this site invented.