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MACK 8 UNIT

Operated by APACHE CORPORATION (P-5 27200) in the JAILHOUSE (FUSSELMAN) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 44881District 08Field 45484200Hydrogen sulphide fieldOilCasinghead gasSaveExport
Value, all time
$26.2 M
Jun 2013 – May 2026
Value, last 12 filed months
$957 k
at the published price for each month
Months reported
156
no gaps in the span
Streams
2
oil, casinghead gas

The JAILHOUSE (FUSSELMAN) 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 109 leases and 197 wells, and the rule below applies to all of them.

Discovered
1995-08-10
as the register files it
Field class
Oil and gas
the register's own label
Between wells
660 ft
minimum
From a lease line
467 ft
minimum

A drilling unit in this field needs at least 40 acres. The field rule took effect on 2017-06-06.

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: “UNLIMITED NET GOR.”

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
OilDisposition360,308 bbl$24,126,847
Casinghead gasProduction591,243 Mcf$2,057,222
Total$26,184,069

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 31.9835, -101.4865. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.2 miles.

31.98370, -101.48669 · 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
0.0%
0 of 3 wells
With a plug date
0.0%
0 of 3 wells
Median depth
10,268 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
00.0%
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.
3100.0%

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

Between 10,266 and 10,315 ft, median 10,268 ft, over the 3 wells that filed a depth.

Completions filed
Jun 2013 – Oct 2014
3 of 3 wells

3 wells

42-17336775510,268 ftOct 2014——
42-17336090410,266 ftNov 2013——
42-17335391110,315 ftJun 2013——

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 (156)

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

156 months

May 20261,1742,034106.413.05$131,121
Apr 20261,1562,26598.932.87$120,863
Mar 20261,1562,15389.753.15$110,532
Feb 20268011,39963.503.75$56,110
Jan 202654954259.138.00$36,797
Dec 202552179756.664.41$33,037
Nov 20258411,13358.593.93$53,723
Oct 20251,5231,83159.383.30$96,487
Sep 20251,8662,08562.743.08$123,488
Aug 20251,2341,48063.933.01$83,351
Jul 20251,0311,40166.743.32$73,454
Jun 202554765366.483.13$38,408
May 202542757960.553.23$27,726
Apr 202567467662.363.54$44,426
Mar 20258671,53367.704.27$65,239
Feb 202527334270.884.34$20,835
Jan 202579460574.324.28$61,599
Dec 20249921,52168.993.12$73,186
Nov 20241,1852,76169.052.20$87,894
Oct 20248301,66171.372.28$63,027
Sep 20247701,41469.612.36$56,943
Aug 20247921,48275.632.06$62,957
Jul 20241,0381,88579.932.15$87,014
Jun 20247451,51078.082.63$62,147
May 20247591,57178.812.20$63,271
Apr 20241,2301,95784.451.66$107,121
Mar 20241,0552,10380.301.55$87,966
Feb 20248461,13676.091.78$66,398
Jan 20241,1391,62773.023.30$88,535
Dec 20237641,66471.262.61$58,787
Nov 202334347377.892.81$28,044
Oct 202335272085.443.09$32,298
Sep 20231,0701,91389.042.74$100,505
Aug 20238441,43880.522.67$71,802
Jul 20239582,05274.852.64$77,127
Jun 20238861,33968.962.26$64,123
May 20231,1882,04470.622.23$88,449
Apr 20239492,24978.122.24$79,169
Mar 20231,2452,26272.852.39$96,112
Feb 20231,3892,06475.112.47$109,417
Jan 20238182,18376.533.39$69,997
Dec 20221,1532,60876.415.73$103,042
Nov 20221,2842,59585.005.65$123,792
Oct 20221,5252,71887.185.86$148,887
Sep 20221,1362,18784.888.16$114,278
Aug 20221,1512,32394.529.13$129,995
Jul 20221,1252,370101.587.54$132,152
Jun 20221,3511,899115.097.98$170,635
May 20229312,137109.378.43$119,845
Apr 20221,4472,653104.226.84$168,946
Mar 20221,4962,827108.885.08$177,235
Feb 20221,1981,81491.054.86$117,892
Jan 20228711,78581.844.54$79,382
Dec 20219011,80371.323.90$71,289
Nov 20211,1762,40577.435.24$103,652
Oct 20211,1302,61079.795.71$105,076
Sep 20211,0592,92869.865.35$89,649
Aug 20219322,26466.024.22$71,086
Jul 20217731,90470.783.98$62,295
Jun 20211,1312,04269.493.38$85,496
May 20219262,24063.483.02$65,542
Apr 20218201,75060.362.76$54,322
Mar 20218591,00861.302.72$55,395
Feb 202152172857.805.55$34,153
Jan 20217181,48450.412.81$40,365
Dec 20201,1362,18444.642.68$56,554
Nov 20207332,16938.772.71$34,289
Oct 20208811,85836.972.48$37,175
Sep 20201,0351,44237.091.99$41,259
Aug 20201,0772,13839.982.39$48,158
Jul 20208932,13438.371.83$38,159
Jun 20201,2552,32134.901.69$47,723
May 20201,1172,22516.921.81$22,937
Apr 20209572,24114.751.80$18,159
Mar 20201,0322,25330.341.86$35,493
Feb 20208351,35449.881.98$44,332
Jan 20208731,63657.252.09$53,406
Dec 20191,1641,89059.012.30$73,043
Nov 20191,0231,99655.302.75$62,062
Oct 20191,0682,23753.472.42$62,516
Sep 20191,0072,22455.052.66$61,345
Aug 20191,1042,46053.112.30$64,302
Jul 20191,0692,37056.272.46$65,983
Jun 20198121,66152.782.49$46,995
May 20197681,64158.482.74$49,410
Apr 20191,1441,55662.632.75$75,929
Mar 20197821,23056.803.06$48,184
Feb 20198111,27050.852.79$44,785
Jan 20191,3481,57546.033.23$67,133
Dec 20181,0472,08046.594.19$57,485
Nov 20181,4452,14652.934.24$85,577
Oct 20181,0722,06961.443.40$72,894
Sep 20181,1642,05859.543.11$75,701
Aug 20181,4322,32459.403.07$92,187
Jul 20181,4252,50865.142.93$100,178
Jun 20181,1292,57760.183.08$75,872
May 20181,6743,40865.382.90$119,332
Apr 20189781,55963.842.90$66,958
Mar 20181,3581,91361.222.79$88,468
Feb 20181,2451,81661.782.77$81,939
Jan 20181,3282,11862.874.01$91,983
Dec 20171,3262,36857.272.92$82,858
Nov 20171,9442,51155.423.12$115,567
Oct 20171,3772,89149.292.98$76,498
Sep 20171,4592,38747.523.09$76,701
Aug 20172,1352,97945.373.00$105,815
Jul 20171,6783,52843.873.09$84,506
Jun 20171,9723,71242.493.09$95,250
May 20172,5514,11245.373.26$129,158
Apr 20171,8614,03747.933.21$102,163
Mar 20172,3174,20546.772.98$120,912
Feb 20172,6063,82750.452.95$142,772
Jan 20172,6044,22249.413.42$143,098
Dec 20162,8204,42248.763.72$153,966
Nov 20162,1644,63842.492.64$104,213
Oct 20162,7935,12146.193.09$144,834
Sep 20162,9734,62441.553.10$137,865
Aug 20162,7735,23241.442.92$130,213
Jul 20163,2515,12041.622.92$150,279
Jun 20163,1945,70545.352.69$160,171
May 20163,3325,35742.521.99$152,343
Apr 20163,3955,81136.561.99$135,691
Mar 20164,3586,36433.011.79$155,275
Feb 20163,6216,30326.472.06$108,855
Jan 20163,7796,36427.352.36$118,402
Dec 20154,4247,08432.362.00$157,339
Nov 20154,3027,28238.792.17$182,657
Oct 20154,0497,87943.552.43$195,453
Sep 20154,1328,27842.992.76$200,469
Aug 20154,5217,60940.162.87$203,420
Jul 20155,8678,05348.152.95$306,213
Jun 20155,3009,98456.152.88$326,377
May 20155,93912,36655.212.96$364,439
Apr 20155,55511,68449.822.71$308,374
Mar 20155,6599,73042.892.93$271,269
Feb 20155,9199,04044.662.98$291,247
Jan 20158,38614,59043.433.10$409,442
Dec 201411,31718,16254.693.59$684,153
Nov 201411,91316,28370.464.25$908,623
Oct 20145,94911,41978.303.90$510,352
Sep 20145,97010,92286.164.05$558,560
Aug 20146,77611,57089.394.04$652,393
Jul 20147,61311,93096.564.18$784,974
Jun 20147,77912,64898.164.74$823,499
May 20149,01213,68394.734.73$918,380
Apr 20149,09812,28895.944.81$931,957
Mar 20146,7538,61895.895.06$691,125
Feb 20146,1896,91697.406.19$645,632
Jan 20148,5599,48190.404.86$819,818
Dec 20138,51110,50691.824.35$827,228
Nov 20136,5648,44688.853.74$614,785
Oct 20132,5393,31297.423.78$259,867
Sep 20134,6724,489104.113.72$503,091
Aug 20135,5155,437104.253.52$594,091
Jul 20135,3347,180102.523.72$573,535
Jun 20131,4532,27494.403.93$146,108

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                1,174 bbl  × $106.41 =   $124,925
Casinghead gas     2,034 Mcf  × $  3.05 =     $6,195

────────────────────────────────────────────────────
Month total                                 $131,121

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/44881 is the state's own key, not one this site invented.