ROCKER B -F-

Operated by DISCOVERY NATURAL RESOURCES LLC (P-5 220855) in the SPRABERRY (TREND AREA) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 4577District 7CField 85279200NGPA filingOilCasinghead gasSaveExport
Value, all time
$8.5 M
Jan 1993 – Jan 2019
Value, last 12 filed months
$225 k
at the published price for each month
Months reported
313
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 7,461 leases and 22,481 wells, and the rule below applies to all of them.

Discovered
1904-12-31
as the register files it
Field class
Oil and gas
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 80 acres. The field rule took effect on 2016-03-08.

The Commission's schedule remark for this field reads: AREA) 85279200.

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
NGPA5none

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
OilDisposition103,708 bbl$5,450,911
Casinghead gasProduction884,858 Mcf$3,015,266
Total$8,466,177

134,946 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 (13)

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 31.3711, -101.3945. A lease has no coordinate of its own — that point is the mean of its wells, and they span 1.6 miles.

31.37109, -101.39320 · 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
76.9%
10 of 13 wells
With a plug date
76.9%
10 of 13 wells
Median depth
7,600 ft
13 wells filed one
Completion to plug
30.7 years
median over 5 wells

What the state filed about each well

On the RRC proration schedule
1076.9%
A plug date is filed
1076.9%
BothOn the schedule and plugged. Neither fact cancels the other.
1076.9%
NeitherNo plug date, and not on the schedule.
323.1%

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, 13 of 13 wells. Median 7,600 ft, with the middle half between 7,170 and 7,670 ft; the shallowest is 7,120 ft and the deepest 9,690 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, 8 of 13 wells, Apr 1982 – Aug 2022. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Apr 1982 – Aug 2022
8 of 13 wells; 5 filed none
Plug dates filed
Dec 1981 – Oct 2025
10 of 13 wells; 3 filed none

Last completion to plug: a median of 30.7 years across the 5 wells that filed both dates, with the middle half between 30.3 years and 34.8 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

13 wells

42-3831008917,650 ftSep 2000Yes
42-3831009137,670 ftDec 1981Yes
42-3831009257,625 ftMar 2012Yes
42-3831009367,580 ftFeb 1982Yes
42-3831060347,600 ftMay 1983Yes
42-3831009027,700 ftAug 2022Oct 2025Yes
42-38338860119,690 ftJul 2022
42-38337580109,666 ftOct 2021
42-3833336797,170 ftMay 1985Feb 2020Yes
42-3833336687,170 ftApr 1985Aug 2015Yes
42-3833323277,300 ftDec 1984Aug 2015Yes
42-383322136 X7,120 ftDec 1982
42-383321223 X7,160 ftApr 1982Jan 2020Yes

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 (313)

Volume × price = value, one row per cycle. The price columns are the same series published on the prices page — nothing here is modelled.

313 months

Jan 20190046.033.23$0
Dec 20180046.594.19$0
Nov 20180052.934.24$0
Oct 201827189961.443.40$19,705
Sep 20180059.543.11$0
Aug 201816059.403.07$950
Jul 20183664,08465.142.93$35,815
Jun 20181834,07760.183.08$23,558
May 20183644,83465.382.90$37,821
Apr 20185384,77763.842.90$48,203
Mar 20183675,16961.222.79$36,873
Feb 20181883,95161.782.77$22,544
Jan 20185674,54662.874.01$53,874
Dec 20173715,13857.272.92$36,258
Nov 20175654,97255.423.12$46,817
Oct 20171894,35049.292.98$22,295
Sep 20173705,01347.523.09$33,059
Aug 20175505,42145.373.00$41,240
Jul 20173585,38143.873.09$32,318
Jun 20173655,75942.493.09$33,289
May 20177325,44045.373.26$50,964
Apr 20173625,42547.933.21$34,774
Mar 20177454,97846.772.98$49,696
Feb 20173764,41250.452.95$31,996
Jan 20173734,96049.413.42$35,387
Dec 20167405,17348.763.72$55,341
Nov 20163664,96442.492.64$28,678
Oct 20163675,49246.193.09$33,923
Sep 20167275,40841.553.10$46,975
Aug 20167066,01741.442.92$46,852
Jul 20163595,40341.622.92$30,742
Jun 20167145,36245.352.69$46,781
May 20163585,26042.521.99$25,695
Apr 20167305,85936.561.99$38,354
Mar 20163635,55233.011.79$21,943
Feb 20167305,80726.472.06$31,307
Jan 20167316,01627.352.36$34,217
Dec 20151,1035,64432.362.00$46,989
Nov 20153595,44138.792.17$25,718
Oct 20157216,05343.552.43$46,088
Sep 20151,0816,01642.992.76$63,067
Aug 20153606,44640.162.87$32,974
Jul 20151,0846,60748.152.95$71,653
Jun 20157156,23556.152.88$58,122
May 20151,0667,14155.212.96$79,959
Apr 20155607,05549.822.71$46,994
Mar 20151,6357,12142.892.93$91,023
Feb 20155525,59644.662.98$41,307
Jan 20151,0986,23943.433.10$67,031
Dec 20141,4808,48454.693.59$111,410
Nov 20142,2329,13270.464.25$196,095
Oct 20147174,13878.303.90$72,283
Sep 20147253,62386.164.05$77,123
Aug 20147213,59689.394.04$78,960
Jul 20143553,16796.564.18$47,516
Jun 20143604,19698.164.74$55,214
May 20147064,76894.734.73$89,416
Apr 20143653,00095.944.81$49,445
Mar 20141,0953,70895.895.06$123,750
Feb 20143563,40097.406.19$55,727
Jan 20147253,70990.404.86$83,568
Dec 20137213,04091.824.35$79,440
Nov 20133623,35888.853.74$44,717
Oct 20131,0803,90797.423.78$119,980
Sep 20133643,354104.113.72$50,365
Aug 20137274,564104.253.52$91,867
Jul 20131,0954,661102.523.72$129,588
Jun 20137303,77794.403.93$83,768
May 20131,2623,64994.834.15$134,815
Apr 20137233,00793.964.28$80,811
Mar 201302,90093.623.91$11,347
Feb 20133661,75491.233.42$39,389
Jan 201301,94291.603.42$6,641
Dec 20129143,08686.773.42$89,862
Nov 20121,2447,36986.953.62$134,878
Oct 20129016,03089.383.40$101,031
Sep 20127305,02994.672.92$83,786
Aug 20121,0675,06592.662.91$113,598
Jul 20121,8305,65485.133.02$172,868
Jun 20127154,40679.822.52$68,170
May 20121,8045,49591.612.49$178,938
Apr 20121,8024,325101.652.00$191,809
Mar 20123621,940105.052.22$42,339
Feb 20121911,876101.102.57$24,132
Jan 20123811,94298.092.73$42,682
Dec 201102,10896.873.24$6,829
Nov 20113671,78495.723.31$41,037
Oct 20111891,84084.983.65$22,775
Sep 201101,86183.623.99$7,418
Aug 20111791,80883.404.15$22,431
Jul 20111791,97094.144.52$25,750
Jun 20111331,86992.904.64$21,028
May 20111831,99798.134.40$26,754
Apr 201101,924105.964.33$8,337
Mar 20111412,01696.364.06$21,766
Feb 20111801,43085.644.18$21,393
Jan 20111801,93086.504.59$24,426
Dec 20101862,02285.734.35$24,737
Nov 20101821,99480.843.80$22,281
Oct 20101821,99678.103.51$21,218
Sep 20101802,08972.633.98$21,387
Aug 20103532,08873.684.42$35,237
Jul 201001,91872.554.74$9,085
Jun 20101741,89470.364.91$21,543
May 20101831,93571.124.24$21,210
Apr 20101811,65781.694.12$21,617
Mar 20101371,75278.394.39$18,428
Feb 201001,77173.585.44$9,638
Jan 20101811,95474.365.96$25,113
Dec 20091801,89671.445.48$23,256
Nov 20091791,91774.593.75$20,543
Oct 200902,04472.544.11$8,401
Sep 20091791,99065.543.06$17,831
Aug 20091812,01967.423.22$18,701
Jul 20091741,98961.133.46$17,528
Jun 20091802,05666.163.90$19,917
May 20091792,17154.743.93$18,321
Apr 20091821,96346.773.59$15,554
Mar 200901,92142.144.06$7,797
Feb 20093731,77732.814.63$20,471
Jan 20091841,92835.865.37$16,954
Dec 200801,90037.105.98$11,357
Nov 20083581,79955.496.86$32,207
Oct 200801,82875.246.92$12,653
Sep 200801,794101.767.88$14,132
Aug 20081761,942114.228.48$36,577
Jul 20081792,111131.0811.39$47,506
Jun 200801,828131.3313.03$23,824
May 20083561,941123.1711.57$66,314
Apr 200801,450110.3110.45$15,160
Mar 20084451,783101.909.66$62,577
Feb 200801,70992.538.77$14,989
Jan 200801,81890.388.21$14,918
Dec 20074261,81688.337.30$50,889
Nov 200701,83591.677.29$13,380
Oct 200701,91682.856.92$13,263
Sep 20073981,82175.846.24$41,555
Aug 200702,26669.066.39$14,475
Jul 200702,20370.906.39$14,073
Jun 20072781,92062.007.55$31,729
May 200701,94658.747.85$15,269
Apr 20073411,94259.617.81$35,485
Mar 200702,09056.927.30$15,261
Feb 20074011,73855.108.22$36,375
Jan 200701,70050.306.73$11,436
Dec 200601,83656.656.92$12,702
Nov 20063591,95554.207.62$34,350
Oct 200602,04554.906.01$12,298
Sep 20062991,95860.085.04$27,827
Aug 200602,02168.717.34$14,834
Jul 20063862,04469.376.34$39,741
Jun 200601,97066.286.38$12,576
May 20064082,03666.016.42$40,013
Apr 200601,97664.397.36$14,544
Mar 200602,00756.707.08$14,215
Feb 20063521,77457.597.75$34,022
Jan 200601,91960.598.93$17,143
Dec 20054001,93054.9413.42$47,868
Nov 200501,88754.6910.59$19,980
Oct 20053202,00758.3413.80$46,357
Sep 200501,89961.4512.08$22,938
Aug 20053022,03761.519.80$38,532
Jul 200501,60155.697.84$12,558
Jun 20053571,78052.337.38$31,820
May 200502,05045.226.65$13,635
Apr 20053831,65849.207.36$31,047
Mar 200501,79450.377.15$12,836
Feb 20053041,72445.226.31$24,629
Jan 200501,97043.166.32$12,455
Dec 20043681,96439.866.75$27,928
Nov 200401,93345.286.33$12,237
Oct 20044242,00949.706.52$34,162
Sep 200402,04943.245.28$10,827
Aug 20043332,11642.375.55$25,854
Jul 200401,77238.286.08$10,781
Jun 20044041,63836.106.43$25,122
May 200401,92137.486.49$12,476
Apr 20043852,06134.475.86$25,345
Mar 200401,94634.365.53$10,762
Feb 20044771,91932.455.51$26,052
Jan 200402,02232.036.30$12,738
Dec 20033802,11630.266.30$24,833
Nov 200302,14628.804.60$9,861
Oct 20034472,22228.174.76$23,168
Sep 200301,97226.314.75$9,366
Aug 20033822,20529.765.13$22,679
Jul 200302,05929.415.17$10,647
Jun 20033231,01628.565.98$15,304
May 200301,68426.595.97$10,058
Apr 20034181,79626.675.41$20,860
Mar 200301,83231.146.10$11,168
Feb 20033521,75733.487.93$25,711
Jan 200301,69630.315.58$9,467
Dec 20023251,95026.914.85$18,211
Nov 200201,94824.664.14$8,059
Oct 20023921,99626.464.23$18,814
Sep 200202,00227.443.64$7,278
Aug 20023232,16425.963.16$15,232
Jul 20023992,00724.583.06$15,952
Jun 200201,60223.733.34$5,348
May 200202,10324.663.58$7,537
Apr 20024112,10923.653.51$17,128
Mar 200202,25922.003.10$7,009
Feb 20024121,64018.222.38$11,403
Jan 20024232,09017.172.38$12,228
Dec 200102,06716.932.36$4,887
Nov 200102,05318.072.41$4,939
Oct 20013682,16719.782.53$12,759
Sep 200102,06724.262.25$4,653
Aug 20014322,10824.873.05$17,180
Jul 200102,20623.933.20$7,053
Jun 20014622,07424.563.82$19,278
May 200102,19325.524.31$9,446
Apr 20013492,15224.685.34$20,095
Mar 200102,13424.545.38$11,473
Feb 20014162,01927.755.77$23,188
Jan 200102,20627.478.40$18,528
Dec 20004542,21126.889.12$32,373
Nov 200002,15532.215.66$12,193
Oct 20003372,29231.235.15$22,318
Sep 200002,44431.875.19$12,676
Aug 20004152,51929.644.54$23,739
Jul 200002,47528.534.09$10,122
Jun 20004042,43329.304.40$22,536
May 200002,44727.263.68$9,004
Apr 20003942,46924.513.12$17,350
Mar 20004582,26128.422.86$19,482
Feb 200002,10027.622.73$5,726
Jan 20004092,16225.272.48$15,698
Dec 199902,07624.282.42$5,032
Nov 19994301,86623.192.43$14,514
Oct 199902,16820.982.80$6,078
Sep 19994622,13121.752.62$15,629
Aug 199902,33119.262.88$6,703
Jul 19994652,39717.892.37$14,005
Jun 199902,35015.942.36$5,551
May 19993732,65415.792.32$12,050
Apr 19994421,82915.102.21$10,713
Mar 199901,81512.471.84$3,337
Feb 199901,3529.981.82$2,458
Jan 19994751,34210.381.90$7,480
Dec 199801,7019.201.77$3,016
Nov 199801,68510.892.19$3,683
Oct 199801,85412.421.97$3,651
Sep 19984022,09212.592.08$9,418
Aug 199802,07611.301.91$3,960
Jul 199802,19811.742.24$4,918
Jun 19984672,36411.242.24$10,538
May 199802,79312.622.21$6,162
Apr 19984022,77313.042.51$12,189
Mar 199802,82412.802.31$6,522
Feb 19984812,42413.952.30$12,283
Jan 19984092,94514.702.15$12,358
Dec 19974022,76716.322.41$13,232
Nov 199702,56918.193.09$7,934
Oct 19974682,71019.253.15$17,545
Sep 199702,64717.742.95$7,822
Aug 19973192,52117.862.55$12,138
Jul 19974672,39217.582.25$13,585
Jun 199702,87217.242.26$6,483
May 19974562,93918.972.31$15,435
Apr 19974902,88817.882.08$14,776
Mar 19974813,06718.951.94$15,062
Feb 199702,04820.492.21$4,518
Jan 19974832,52123.483.54$20,264
Dec 199602,52723.32$0
Nov 19964242,63321.97$9,315
Oct 19964662,76023.31$10,862
Sep 199602,71722.22$0
Aug 19964561,58320.26$9,239
Jul 199602,03319.55$0
Jun 19964362,53118.73$8,166
May 19964482,76519.43$8,705
Apr 199602,66921.51$0
Mar 19964742,73219.38$9,186
Feb 19964552,53916.98$7,726
Jan 199602,46517.07$0
Dec 19954392,55317.19$7,546
Nov 19954372,70916.00$6,992
Oct 19954252,89315.43$6,558
Sep 199502,92416.18$0
Aug 19954843,13215.92$7,705
Jul 199503,17115.24$0
Jun 19954442,96716.41$7,286
May 19954353,10617.56$7,639
Apr 199502,83817.73$0
Mar 19954382,96016.44$7,201
Feb 19954612,63316.58$7,643
Jan 19954632,86815.92$7,371
Dec 19944532,92115.03$6,809
Nov 199402,98915.90$0
Oct 19944393,08215.58$6,840
Sep 19944572,91215.29$6,988
Aug 19944612,96916.13$7,436
Jul 199403,09517.56$0
Jun 19944563,21017.09$7,793
May 19944323,13415.88$6,860
Apr 19944722,88514.14$6,674
Mar 199403,22012.46$0
Feb 19944772,62812.50$5,963
Jan 19944773,01412.66$6,039
Dec 199302,97312.33$0
Nov 19939282,93814.49$13,447
Oct 199302,32015.85$0
Sep 19934882,28715.03$7,335
Aug 19934712,03615.66$7,376
Jul 199303,38615.46$0
Jun 19934713,33616.79$7,908
May 19934723,08217.68$8,345
Apr 19934713,06318.05$8,502
Mar 199303,06418.14$0
Feb 19934653,02217.90$8,324
Jan 19934452,67216.93$7,534

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.

Oct 2018 — as filed, then multipliedworked
Oil                  271 bbl  × $ 61.44 =    $16,650
Casinghead gas       899 Mcf  × $  3.40 =     $3,055

────────────────────────────────────────────────────
Month total                                  $19,705

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. 7C/O/4577 is the state's own key, not one this site invented.