STAR MAHAFFEY

Operated by BURK ROYALTY CO., LTD. (P-5 108799) in the CONGER (PENN) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 29961District 08Field 20097700NGPA filingOilCasinghead gasSaveExport
Value, all time
$2.7 M
Jan 1993 – May 2026
Value, last 12 filed months
$16 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 1,011 leases and 1,988 wells, and the rule below applies to all of them.

Discovered
1978-01-01
as the register files it
Field class
Oil and gas
the register's own label
Between wells
933 ft
minimum
From a lease line
660 ft
minimum

A drilling unit in this field needs at least 40 acres. The field rule took effect on 1985-04-29.

The Commission's schedule remark for this field reads: OPTIONAL 40ACRE UNIT DIAG. 2100 PER #8-84810

Severance-tax incentive filings

Applications the operator filed to have this lease's gas taxed at a reduced state rate. A filing is an application, and this page never calls one a reduction that was granted.

ProgrammeFilingsWith an approval dateDatedDocket
NGPA3none

This says nothing about a royalty. A severance tax is charged to the operator. Whether a reduced rate reaches a royalty owner depends on the wording of the lease instrument, which is a private contract this site does not hold.

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
OilDisposition15,687 bbl$465,022
Casinghead gasProduction715,925 Mcf$2,210,687
Total$2,675,709

197,897 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 (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 31.6595, -101.2141. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.8 miles.

31.65942, -101.21487 · 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
66.7%
2 of 3 wells
With a plug date
0.0%
0 of 3 wells
Median depth
8,300 ft
3 wells filed one
Completion to plug
no well filed both dates

What the state filed about each well

On the RRC proration schedule
266.7%
A plug date is filed
00.0%
BothOn the schedule and plugged. Neither fact cancels the other.
00.0%
NeitherNo plug date, and not on the schedule.
133.3%

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 8,300 and 8,302 ft, median 8,300 ft, over the 3 wells that filed a depth.

Completions filed
Aug 1985 – Mar 2012
3 of 3 wells

3 wells

42-4313161628,300 ftMar 2012Yes
42-4313161438,300 ftFeb 1986
42-4313161518,302 ftAug 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 20260293106.413.05$892
Apr 2026023498.932.87$672
Mar 20264628389.753.15$5,020
Feb 2026026163.503.75$979
Jan 2026029059.138.00$2,319
Dec 2025030856.664.41$1,359
Nov 2025032858.593.93$1,288
Oct 2025029559.383.30$975
Sep 2025015162.743.08$465
Aug 2025021363.933.01$642
Jul 2025027666.743.32$915
Jun 2025028666.483.13$895
May 2025030160.553.23$973
Apr 2025032262.363.54$1,141
Mar 2025028967.704.27$1,234
Feb 2025028770.884.34$1,246
Jan 20256834174.324.28$6,513
Dec 2024033368.993.12$1,039
Nov 2024036969.052.20$811
Oct 2024031571.372.28$719
Sep 2024025869.612.36$610
Aug 2024033675.632.06$693
Jul 2024041879.932.15$897
Jun 2024032578.082.63$856
May 2024043178.812.20$948
Apr 2024011484.451.66$189
Mar 2024031680.301.55$488
Feb 2024030176.091.78$537
Jan 2024031473.023.30$1,035
Dec 2023031871.262.61$830
Nov 2023031277.892.81$876
Oct 2023033485.443.09$1,031
Sep 2023034989.042.74$955
Aug 2023036380.522.67$970
Jul 2023035574.852.64$938
Jun 2023033668.962.26$759
May 2023037870.622.23$842
Apr 20237836078.122.24$6,899
Mar 2023036772.852.39$878
Feb 2023033175.112.47$816
Jan 2023036676.533.39$1,240
Dec 2022037276.415.73$2,131
Nov 2022037185.005.65$2,095
Oct 2022040187.185.86$2,351
Sep 2022039184.888.16$3,192
Aug 2022041994.529.13$3,824
Jul 20220428101.587.54$3,228
Jun 20220421115.097.98$3,358
May 20220373109.378.43$3,146
Apr 202253423104.226.84$8,416
Mar 20220350108.885.08$1,777
Feb 2022027891.054.86$1,351
Jan 2022031181.844.54$1,411
Dec 2021031571.323.90$1,228
Nov 2021030977.435.24$1,618
Oct 20216233979.795.71$6,884
Sep 2021027269.865.35$1,455
Aug 2021033566.024.22$1,414
Jul 2021038170.783.98$1,517
Jun 2021035669.493.38$1,204
May 2021038463.483.02$1,159
Apr 2021025460.362.76$701
Mar 2021029961.302.72$812
Feb 2021019057.805.55$1,054
Jan 2021035250.412.81$989
Dec 2020049644.642.68$1,327
Nov 2020051138.772.71$1,383
Oct 2020047336.972.48$1,172
Sep 2020054537.091.99$1,085
Aug 2020050739.982.39$1,209
Jul 2020033538.371.83$611
Jun 2020044934.901.69$759
May 20200016.921.81$0
Apr 2020011514.751.80$208
Mar 2020040330.341.86$748
Feb 2020038049.881.98$753
Jan 2020048257.252.09$1,010
Dec 20193424359.012.30$2,566
Nov 2019040555.302.75$1,114
Oct 2019042053.472.42$1,016
Sep 2019042355.052.66$1,124
Aug 2019043753.112.30$1,007
Jul 2019044056.272.46$1,082
Jun 2019042452.782.49$1,056
May 2019047058.482.74$1,288
Apr 2019034162.632.75$938
Mar 2019047156.803.06$1,442
Feb 2019043350.852.79$1,209
Jan 20194347646.033.23$3,516
Dec 2018049746.594.19$2,080
Nov 2018043552.934.24$1,843
Oct 2018049961.443.40$1,696
Sep 2018046259.543.11$1,436
Aug 2018050259.403.07$1,539
Jul 2018084265.142.93$2,469
Jun 2018084160.183.08$2,588
May 2018086365.382.90$2,503
Apr 2018087963.842.90$2,550
Mar 20184691161.222.79$5,355
Feb 2018081561.782.77$2,254
Jan 2018089362.874.01$3,580
Dec 20171790457.272.92$3,615
Nov 2017089555.423.12$2,791
Oct 2017094149.292.98$2,808
Sep 2017095647.523.09$2,951
Aug 2017094345.373.00$2,833
Jul 20176299543.873.09$5,792
Jun 2017095542.493.09$2,948
May 2017099345.373.26$3,241
Apr 2017096047.933.21$3,083
Mar 2017096046.772.98$2,864
Feb 2017073150.452.95$2,158
Jan 2017064449.413.42$2,202
Dec 20166766248.763.72$5,731
Nov 2016066742.492.64$1,764
Oct 2016057946.193.09$1,789
Sep 2016062441.553.10$1,935
Aug 2016069341.442.92$2,027
Jul 2016070741.622.92$2,068
Jun 2016067945.352.69$1,824
May 2016069442.521.99$1,382
Apr 2016083836.561.99$1,668
Mar 2016083433.011.79$1,496
Feb 201610278126.472.06$4,312
Jan 2016068427.352.36$1,617
Dec 2015084432.362.00$1,689
Nov 2015076738.792.17$1,662
Oct 2015097643.552.43$2,368
Sep 2015089842.992.76$2,477
Aug 201501,04640.162.87$3,005
Jul 201510499548.152.95$7,938
Jun 2015098556.152.88$2,840
May 2015080555.212.96$2,379
Apr 2015069549.822.71$1,881
Mar 2015077142.892.93$2,263
Feb 2015051144.662.98$1,521
Jan 201501,16243.433.10$3,603
Dec 2014095354.693.59$3,423
Nov 2014071970.464.25$3,057
Oct 2014073778.303.90$2,875
Sep 2014084686.164.05$3,422
Aug 201427317989.394.04$25,126
Jul 2014060696.564.18$2,533
Jun 2014080098.164.74$3,790
May 2014089094.734.73$4,207
Apr 2014068595.944.81$3,294
Mar 2014087495.895.06$4,420
Feb 2014085697.406.19$5,300
Jan 2014061390.404.86$2,980
Dec 2013072291.824.35$3,144
Nov 2013072588.853.74$2,710
Oct 201311876797.423.78$14,394
Sep 20130732104.113.72$2,721
Aug 20130478104.253.52$1,684
Jul 20130420102.523.72$1,561
Jun 2013047594.403.93$1,868
May 2013045394.834.15$1,880
Apr 2013052293.964.28$2,236
Mar 2013081293.623.91$3,177
Feb 2013072691.233.42$2,483
Jan 2013068291.603.42$2,332
Dec 2012069986.773.42$2,391
Nov 2012067886.953.62$2,458
Oct 2012070889.383.40$2,407
Sep 2012068694.672.92$2,002
Aug 2012068192.662.91$1,980
Jul 2012066885.133.02$2,018
Jun 2012071579.822.52$1,801
May 2012076791.612.49$1,909
Apr 2012136694101.652.00$15,210
Mar 20120891105.052.22$1,980
Feb 201201,110101.102.57$2,853
Jan 201201,25098.092.73$3,418
Dec 201101,23296.873.24$3,991
Nov 201101,29795.723.31$4,295
Oct 201101,32984.983.65$4,849
Sep 201101,30283.623.99$5,190
Aug 201101,41683.404.15$5,875
Jul 201101,32594.144.52$5,985
Jun 201101,36292.904.64$6,320
May 20111731,50898.134.40$23,619
Apr 201101,388105.964.33$6,015
Mar 201101,41996.364.06$5,757
Feb 201101,33485.644.18$5,576
Jan 201101,55486.504.59$7,131
Dec 201001,66885.734.35$7,252
Nov 20101651,70080.843.80$19,791
Oct 2010095278.103.51$3,340
Sep 2010087072.633.98$3,462
Aug 201001,32473.684.42$5,851
Jul 201001,38672.554.74$6,565
Jun 201001,15870.364.91$5,686
May 201001,19271.124.24$5,048
Apr 201001,25581.694.12$5,174
Mar 201001,47678.394.39$6,478
Feb 201001,36273.585.44$7,412
Jan 201001,56674.365.96$9,340
Dec 200901,29371.445.48$7,090
Nov 20091721,26774.593.75$17,583
Oct 200901,53672.544.11$6,313
Sep 200901,55265.543.06$4,756
Aug 200901,62467.423.22$5,227
Jul 200901,64061.133.46$5,682
Jun 200901,57366.163.90$6,127
May 200901,65054.743.93$6,477
Apr 200901,58346.773.59$5,679
Mar 200901,63042.144.06$6,616
Feb 20091701,44932.814.63$12,291
Jan 200901,59735.865.37$8,577
Dec 200801,61537.105.98$9,653
Nov 200801,57655.496.86$10,812
Oct 200801,65575.246.92$11,456
Sep 200801,586101.767.88$12,493
Aug 200801,664114.228.48$14,116
Jul 20081701,673131.0811.39$41,338
Jun 200801,586131.3313.03$20,670
May 200801,702123.1711.57$19,699
Apr 200801,577110.3110.45$16,487
Mar 200801,682101.909.66$16,255
Feb 200801,59092.538.77$13,945
Jan 200801,63890.388.21$13,441
Dec 2007121,66188.337.30$13,189
Nov 20071711,68891.677.29$27,984
Oct 200701,73182.856.92$11,982
Sep 200701,66575.846.24$10,397
Aug 200701,77169.066.39$11,313
Jul 200701,85070.906.39$11,818
Jun 200701,67962.007.55$12,674
May 200701,84858.747.85$14,500
Apr 200701,79859.617.81$14,034
Mar 20071721,88556.927.30$23,554
Feb 200701,75255.108.22$14,394
Jan 200701,53950.306.73$10,353
Dec 200601,87556.656.92$12,972
Nov 200601,91254.207.62$14,565
Oct 200602,01454.906.01$12,112
Sep 20061691,90360.085.04$19,739
Aug 200601,68568.717.34$12,368
Jul 200601,80269.376.34$11,430
Jun 200601,92866.286.38$12,308
May 200601,72866.016.42$11,102
Apr 200601,78664.397.36$13,146
Mar 200601,65956.707.08$11,751
Feb 200601,53957.597.75$11,929
Jan 200601,81560.598.93$16,214
Dec 20051801,81154.9413.42$34,184
Nov 200501,78054.6910.59$18,847
Oct 200501,94858.3413.80$26,874
Sep 200501,93461.4512.08$23,361
Aug 200502,03361.519.80$19,917
Jul 200502,09955.697.84$16,464
Jun 20051762,11052.337.38$24,784
May 200502,32145.226.65$15,437
Apr 200501,32349.207.36$9,738
Mar 200501,63150.377.15$11,670
Feb 200501,55345.226.31$9,802
Jan 200501,98743.166.32$12,562
Dec 20041822,06439.866.75$21,189
Nov 200402,09145.286.33$13,237
Oct 200402,21649.706.52$14,437
Sep 200402,28143.245.28$12,053
Aug 200402,02342.375.55$11,229
Jul 20041781,75238.286.08$17,473
Jun 200401,82436.106.43$11,734
May 200402,19237.486.49$14,236
Apr 200402,31634.475.86$13,568
Mar 200402,51634.365.53$13,914
Feb 200402,32132.455.51$12,788
Jan 200402,51632.036.30$15,850
Dec 20031862,59630.266.30$21,987
Nov 200302,26928.804.60$10,426
Oct 20030028.174.76$0
Sep 200302,50926.314.75$11,916
Aug 20031802,84929.765.13$19,971
Jul 200302,91029.415.17$15,047
Jun 200302,00628.565.98$12,002
May 200302,52426.595.97$15,075
Apr 2003180026.675.41$4,801
Mar 200302,17131.146.10$13,235
Feb 200302,15733.487.93$17,096
Jan 200302,52530.315.58$14,095
Dec 20021872,56926.914.85$17,501
Nov 200202,56224.664.14$10,599
Oct 200202,73826.464.23$11,579
Sep 200202,69927.443.64$9,811
Aug 20021842,82725.963.16$13,722
Jul 200202,87524.583.06$8,803
Jun 200202,84923.733.34$9,511
May 200202,93824.663.58$10,530
Apr 20022542,85823.653.51$16,045
Mar 200202,33822.003.10$7,254
Feb 200201,96218.222.38$4,661
Jan 200202,16417.172.38$5,141
Dec 20011811,84416.932.36$7,424
Nov 200102,04518.072.41$4,919
Oct 200102,13319.782.53$5,394
Sep 200102,67624.262.25$6,025
Aug 200102,41324.873.05$7,367
Jul 200102,14123.933.20$6,845
Jun 20011762,75224.563.82$14,847
May 20011812,98625.524.31$17,481
Apr 200102,14624.685.34$11,450
Mar 200102,42824.545.38$13,054
Feb 200102,60327.755.77$15,012
Jan 200102,21127.478.40$18,570
Dec 20001852,84126.889.12$30,890
Nov 200002,76232.215.66$15,627
Oct 200002,71731.235.15$13,980
Sep 20001802,98231.875.19$21,203
Aug 200003,13629.644.54$14,240
Jul 200001,10828.534.09$4,531
Jun 20001811,07329.304.40$10,022
May 200001,07627.263.68$3,959
Apr 2000083724.513.12$2,608
Mar 20001861,92628.422.86$10,794
Feb 200002,82127.622.73$7,691
Jan 200003,39925.272.48$8,431
Dec 19991822,79724.282.42$11,198
Nov 199903,85123.192.43$9,373
Oct 199904,13720.982.80$11,599
Sep 19991822,57221.752.62$10,694
Aug 199902,52319.262.88$7,255
Jul 199903,10417.892.37$7,364
Jun 19991813,14915.942.36$10,323
May 199903,21815.792.32$7,469
Apr 199903,55315.102.21$7,845
Mar 199904,21212.471.84$7,743
Feb 19991872,8129.981.82$6,978
Jan 199902,85010.381.90$5,415
Dec 199804,0069.201.77$7,104
Nov 19981813,99910.892.19$10,712
Oct 199804,44912.421.97$8,761
Sep 19981814,91912.592.08$12,523
Aug 199804,62311.301.91$8,818
Jul 199804,39811.742.24$9,840
Jun 19981814,02211.242.24$11,033
May 199803,86412.622.21$8,525
Apr 19981904,29513.042.51$13,238
Mar 199804,18912.802.31$9,674
Feb 19981693,44913.952.30$10,287
Jan 199804,02914.702.15$8,682
Dec 19973554,56916.322.41$16,810
Nov 19971744,92818.193.09$18,384
Oct 199703,85419.253.15$12,139
Sep 19971734,91017.742.95$17,577
Aug 199704,51917.862.55$11,545
Jul 199704,85717.582.25$10,913
Jun 19971785,68517.242.26$15,901
May 19971765,94118.972.31$17,054
Apr 19971756,54517.882.08$16,761
Mar 19973494,91518.951.94$16,144
Feb 199705,23920.492.21$11,557
Jan 199705,83523.483.54$20,654
Dec 19962095,04223.32$4,874
Nov 19961665,28321.97$3,647
Oct 199603,72723.31$0
Sep 19961713,28722.22$3,800
Aug 199603,55220.26$0
Jul 199603,78819.55$0
Jun 19961704,16518.73$3,184
May 199603,33619.43$0
Apr 19961753,79421.51$3,764
Mar 19961775,57119.38$3,430
Feb 19961744,95116.98$2,955
Jan 199605,38917.07$0
Dec 19951724,19517.19$2,957
Nov 199503,68016.00$0
Oct 19951704,41615.43$2,623
Sep 199504,45516.18$0
Aug 19951745,27815.92$2,770
Jul 19951763,71815.24$2,682
Jun 199503,41616.41$0
May 19951783,15517.56$3,126
Apr 199503,10817.73$0
Mar 19951584,53016.44$2,598
Feb 19953453,10116.58$5,720
Jan 199504,32315.92$0
Dec 19943303,28215.03$4,960
Nov 199403,54015.90$0
Oct 19941794,15215.58$2,789
Sep 199403,54115.29$0
Aug 19941734,65916.13$2,790
Jul 19941713,28817.56$3,003
Jun 199403,38317.09$0
May 19943404,22615.88$5,399
Apr 199404,53614.14$0
Mar 19943554,41412.46$4,423
Feb 199404,29812.50$0
Jan 19943484,57312.66$4,406
Dec 19933493,91412.33$4,303
Nov 199303,94814.49$0
Oct 19931753,06915.85$2,774
Sep 19931804,38815.03$2,705
Aug 199304,38115.66$0
Jul 19933364,56815.46$5,195
Jun 19931794,54516.79$3,005
May 19931874,52717.68$3,306
Apr 19931764,50518.05$3,177
Mar 19931794,51818.14$3,247
Feb 19931794,21217.90$3,204
Jan 19931824,17016.93$3,081

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                    0 bbl  × $106.41 =         $0
Casinghead gas       293 Mcf  × $  3.05 =       $892

────────────────────────────────────────────────────
Month total                                     $892

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. 08/O/29961 is the state's own key, not one this site invented.