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TUMBLER STATE G

Operated by U.S. ENERGY DEVELOPMENT CORP (P-5 875462) in the WOLFBONE (TREND AREA) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 53166District 08Field 98359800Hydrogen sulphide fieldOilCasinghead gasSaveExport
Value, all time
$13.6 M
Aug 2019 – May 2026
Value, last 12 filed months
$937 k
at the published price for each month
Months reported
82
no gaps in the span
Streams
2
oil, casinghead gas

The WOLFBONE (TREND AREA) 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 1,266 leases and 2,377 wells, and the rule below applies to all of them.

Discovered
2010-11-30
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 40 acres. The field rule took effect on 2015-04-08.

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: “DESIGNATED AS UFT FIELD PER DOCKET 01-0299858”

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
OilDisposition192,997 bbl$11,699,880
Casinghead gasProduction563,905 Mcf$1,888,502
Total$13,588,382

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 31.3541, -103.4051. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.0 miles.

31.35413, -103.40506 · 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 1 wells
With a plug date
0.0%
0 of 1 wells
Median depth
11,107 ft
1 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.
1100.0%

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 11,107 ft.

Completions filed
Aug 2019
1 of 1 wells

1 well

42-389372141875H11,107 ftAug 2019——

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 (82)

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

82 months

May 20261,5516,640106.413.05$185,266
Apr 20268183,85698.932.87$91,990
Mar 20268363,07489.753.15$84,712
Feb 20268362,95163.503.75$64,153
Jan 20261,0342,26759.138.00$79,272
Dec 20251,1393,55156.664.41$80,208
Nov 20251,0663,07458.593.93$74,527
Oct 20251,2573,38059.383.30$85,811
Sep 20259511,40362.743.08$63,983
Aug 20258692,26163.933.01$62,372
Jul 20254991,73366.743.32$39,049
Jun 20253301,15966.483.13$25,565
May 20254231,74360.553.23$31,247
Apr 20252431,21662.363.54$19,462
Mar 20252952,33667.704.27$29,942
Feb 20256406,91570.884.34$75,380
Jan 20258699,24874.324.28$104,153
Dec 20247328,58568.993.12$77,298
Nov 20246254,01469.052.20$51,981
Oct 20246363,64271.372.28$53,700
Sep 20242681,25269.612.36$21,616
Aug 20245314,06775.632.06$48,552
Jul 20246315,59179.932.15$62,437
Jun 20244992,96978.082.63$46,782
May 20249856,18178.812.20$91,216
Apr 20241,0855,48184.451.66$100,722
Mar 20241,2934,64080.301.55$110,997
Feb 20241,2525,06476.091.78$104,297
Jan 20241,2825,22373.023.30$110,835
Dec 20231,3685,38971.262.61$111,553
Nov 20231,1404,08577.892.81$100,263
Oct 20231,4725,86185.443.09$143,862
Sep 20231,4965,67689.042.74$148,728
Aug 20231,5416,04680.522.67$140,242
Jul 20231,2484,43374.852.64$105,124
Jun 20231,1024,45968.962.26$86,064
May 20231,0854,07370.622.23$85,695
Apr 20231,3815,56978.122.24$120,346
Mar 20231,6766,35472.852.39$137,303
Feb 20231,8705,81675.112.47$154,796
Jan 20231,7077,53076.533.39$156,146
Dec 20221,6004,92376.415.73$150,460
Nov 20221,8705,84285.005.65$191,935
Oct 20222,0516,51187.185.86$216,985
Sep 20221,2443,81784.888.16$136,751
Aug 20221,7937,03994.529.13$233,720
Jul 20221,7816,737101.587.54$231,725
Jun 20221,9016,630115.097.98$271,675
May 20222,0727,577109.378.43$290,512
Apr 20222,0887,228104.226.84$267,034
Mar 20222,1126,520108.885.08$263,053
Feb 20221,8465,65591.054.86$195,555
Jan 20221,7815,08081.844.54$168,808
Dec 20211,7505,73571.323.90$147,171
Nov 20212,1347,39877.435.24$203,978
Oct 20212,2188,16579.795.71$223,628
Sep 20212,3328,59069.865.35$208,878
Aug 20212,5419,01466.024.22$205,801
Jul 20212,6258,73170.783.98$220,565
Jun 20212,7398,46269.493.38$218,940
May 20212,9228,82363.483.02$212,113
Apr 20212,9047,75060.362.76$196,663
Mar 20212,8275,99961.302.72$189,594
Feb 20212,2023,82957.805.55$148,519
Jan 20213,4257,38450.412.81$193,405
Dec 20203,7628,33244.642.68$190,228
Nov 20203,7049,24438.772.71$168,624
Oct 20203,76611,16236.972.48$166,893
Sep 20203,4708,95237.091.99$146,526
Aug 20203,6819,48839.982.39$169,796
Jul 20203,85811,13738.371.83$168,358
Jun 20204,2798,79934.901.69$164,210
May 20204,8268,64416.921.81$97,343
Apr 20204,6849,07614.751.80$85,466
Mar 20205,49611,17230.341.86$187,486
Feb 20205,71812,16149.881.98$309,301
Jan 20206,65314,63357.252.09$411,537
Dec 20196,42214,79459.012.30$413,053
Nov 20196,21418,20055.302.75$393,697
Oct 201910,40921,68253.472.42$609,008
Sep 201916,15231,40255.052.66$972,612
Aug 20196,58412,78153.112.30$379,128

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                1,551 bbl  × $106.41 =   $165,042
Casinghead gas     6,640 Mcf  × $  3.05 =    $20,224

────────────────────────────────────────────────────
Month total                                 $185,266

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/53166 is the state's own key, not one this site invented.