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CHALLENGER UNIT B AC

Operated by MARATHON OIL EF LLC (P-5 525398) in the SUGARKANE (AUSTIN CHALK) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 11630District 02Field 86950300OilCasinghead gasSaveExport
Value, all time
$45.9 M
Nov 2018 – May 2026
Value, last 12 filed months
$1.6 M
at the published price for each month
Months reported
91
no gaps in the span
Streams
2
oil, casinghead gas

The SUGARKANE (AUSTIN CHALK) 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 527 leases and 806 wells, and the rule below applies to all of them.

Discovered
2006-09-07
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 2016-01-12.

The Commission's schedule remark for this field reads: “ INTO SUGARKANE (AUSTIN CHALK) EFF. 11/07/17.”

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
OilDisposition698,147 bbl$39,862,137
Casinghead gasProduction1,878,109 Mcf$5,996,753
Total$45,858,891

Wells on this lease (2)

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 28.9222, -97.9941. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.2 miles.

28.92218, -97.99412 · 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 2 wells
With a plug date
0.0%
0 of 2 wells
Median depth
10,529 ft
2 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.
2100.0%

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 10,503 and 10,554 ft, median 10,529 ft, over the 2 wells that filed a depth.

Completions filed
Nov 2018
2 of 2 wells

2 wells

42-255358621H10,503 ftNov 2018——
42-255358632H10,554 ftNov 2018——

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 (91)

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

91 months

May 20261,7297,156106.413.05$205,779
Apr 20262,43511,20798.932.87$273,056
Mar 20261,9808,81589.753.15$205,467
Feb 20266823,36063.503.75$55,908
Jan 20268093,75859.138.00$77,892
Dec 20251,0484,11256.664.41$77,527
Nov 20251,0054,97458.593.93$78,413
Oct 20251,4237,66159.383.30$109,816
Sep 20251,2307,47162.743.08$100,158
Aug 20252,0457,49463.933.01$153,329
Jul 20251,9878,85766.743.32$161,975
Jun 20251,8348,75466.483.13$149,313
May 20252,3238,96360.553.23$169,629
Apr 20251,8508,07162.363.54$143,963
Mar 20252,1849,69767.704.27$189,247
Feb 20251,8384,84270.884.34$151,296
Jan 20252,4028,74974.324.28$215,951
Dec 20242,5749,96168.993.12$208,672
Nov 20241,9658,55369.052.20$154,487
Oct 20242,1438,78271.372.28$172,981
Sep 20242,2148,96069.612.36$175,301
Aug 20242,4259,96275.632.06$203,961
Jul 20242,58410,51979.932.15$229,119
Jun 20242,2749,45878.082.63$202,466
May 20243,0408,21178.812.20$257,634
Apr 20242,7569,76084.451.66$248,938
Mar 20242,58510,33580.301.55$223,544
Feb 20242,68710,01476.091.78$222,315
Jan 20242,70610,76173.023.30$233,078
Dec 20232,77111,39871.262.61$227,218
Nov 20233,28612,13577.892.81$290,016
Oct 20232,68512,61385.443.09$268,346
Sep 20232,63611,16289.042.74$265,238
Aug 20233,01712,14180.522.67$275,380
Jul 20233,59312,09574.852.64$300,889
Jun 20233,1129,09468.962.26$235,142
May 20233,36611,58970.622.23$263,520
Apr 20233,05711,06178.122.24$263,565
Mar 20233,31711,92972.852.39$270,191
Feb 20232,9517,23275.112.47$239,481
Jan 20234,18011,34776.533.39$358,336
Dec 20223,40011,38476.415.73$325,014
Nov 20222,79311,19885.005.65$300,631
Oct 20223,38611,62087.185.86$363,328
Sep 20222,97811,20584.888.16$344,247
Aug 20223,22310,94594.529.13$404,535
Jul 20223,74612,444101.587.54$474,372
Jun 20224,17414,069115.097.98$592,617
May 20222,6308,298109.378.43$357,620
Apr 20223,66711,017104.226.84$457,505
Mar 20223,74310,491108.885.08$460,794
Feb 20223,2869,91691.054.86$347,371
Jan 20224,51511,70981.844.54$422,639
Dec 20215,43412,82971.323.90$437,575
Nov 20215,82811,68777.435.24$512,465
Oct 20215,18411,82979.795.71$481,221
Sep 20214,0729,48269.865.35$335,207
Aug 20213,69810,39166.024.22$287,998
Jul 20216,45417,85170.783.98$527,898
Jun 20214,73515,81869.493.38$382,510
May 20216,39018,95263.483.02$462,828
Apr 20216,53017,92560.362.76$443,595
Mar 20216,25718,82561.302.72$434,701
Feb 20214,01712,76057.805.55$302,974
Jan 20214,85913,07050.412.81$281,672
Dec 20206,48019,91744.642.68$342,554
Nov 20206,42120,75238.772.71$305,109
Oct 20207,20023,09436.972.48$323,421
Sep 20207,10022,56437.091.99$308,265
Aug 20207,15724,25139.982.39$343,978
Jul 20207,53024,05338.371.83$332,826
Jun 20208,07624,49034.901.69$323,248
May 20209,08325,69416.921.81$200,313
Apr 20209,47826,26914.751.80$187,200
Mar 20208,00326,65130.341.86$292,281
Feb 20209,52828,46849.881.98$531,642
Jan 202010,84129,65457.252.09$682,765
Dec 201911,90527,71459.012.30$766,377
Nov 201911,12229,78155.302.75$696,965
Oct 201912,08535,23853.472.42$731,409
Sep 201910,40535,00555.052.66$665,813
Aug 201915,27749,04753.112.30$924,383
Jul 201916,49954,07156.272.46$1,061,417
Jun 201918,71360,24852.782.49$1,137,762
May 201921,96365,02658.482.74$1,462,588
Apr 201927,68676,66562.632.75$1,944,857
Mar 201921,09948,38656.803.06$1,346,586
Feb 201934,747110,37150.852.79$2,075,065
Jan 201953,536121,76446.033.23$2,857,338
Dec 201876,258101,44246.594.19$3,977,440
Nov 201868,22888,76652.934.24$3,987,431

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                1,729 bbl  × $106.41 =   $183,983
Casinghead gas     7,156 Mcf  × $  3.05 =    $21,796

────────────────────────────────────────────────────
Month total                                 $205,779

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. 02/O/11630 is the state's own key, not one this site invented.