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SIENKIEWICZ UNIT

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

Gas lease lease 266858District 02Field 86950600Hydrogen sulphide field2 tax incentive programmesCondensateGasSaveExport
Value, all time
$30.1 M
Oct 2012 – May 2026
Value, last 12 filed months
$4 k
at the published price for each month
Months reported
164
no gaps in the span
Streams
2
condensate, gas

The SUGARKANE (EAGLE FORD) 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 1,993 leases and 2,259 wells, and the rule below applies to all of them.

Discovered
2009-12-01
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 2017-10-10.

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: “GAS WELLS”

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
High Cost Gas112013-08-16210337
NGPA1none——

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
CondensateDisposition328,219 bbl$24,894,977
GasProduction1,490,265 Mcf$5,167,137
Total$30,062,114

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 28.8456, -97.8987. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.0 miles.

28.84557, -97.89865 · 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
12,593 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 12,593 ft.

Completions filed
Sep 2021
1 of 1 wells

1 well

42-255325476H12,593 ftSep 2021——

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 (164)

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

164 months

May 202600106.413.05$0
Apr 202644098.932.87$4,353
Mar 20260089.753.15$0
Feb 20260063.503.75$0
Jan 20260059.138.00$0
Dec 20250056.664.41$0
Nov 20250058.593.93$0
Oct 20250059.383.30$0
Sep 20250062.743.08$0
Aug 20250063.933.01$0
Jul 20250066.743.32$0
Jun 20250066.483.13$0
May 20250060.553.23$0
Apr 20250062.363.54$0
Mar 20250067.704.27$0
Feb 20250070.884.34$0
Jan 20250074.324.28$0
Dec 20240068.993.12$0
Nov 20240069.052.20$0
Oct 20240071.372.28$0
Sep 20240069.612.36$0
Aug 20240075.632.06$0
Jul 20240079.932.15$0
Jun 20240078.082.63$0
May 20240078.812.20$0
Apr 20240084.451.66$0
Mar 20240080.301.55$0
Feb 20240076.091.78$0
Jan 20240073.023.30$0
Dec 20230071.262.61$0
Nov 20230077.892.81$0
Oct 20230085.443.09$0
Sep 2023344089.042.74$30,630
Aug 20230080.522.67$0
Jul 20230074.852.64$0
Jun 20230068.962.26$0
May 20230070.622.23$0
Apr 20230078.122.24$0
Mar 20230072.852.39$0
Feb 20230075.112.47$0
Jan 20230076.533.39$0
Dec 20220076.415.73$0
Nov 20220085.005.65$0
Oct 20220087.185.86$0
Sep 20223084.888.16$255
Aug 20228213694.529.13$8,992
Jul 2022100286101.587.54$12,315
Jun 202210115.097.98$115
May 202230120109.378.43$4,293
Apr 20223209104.226.84$1,742
Mar 202215095108.885.08$16,814
Feb 20225091.054.86$455
Jan 20221844881.844.54$15,276
Dec 20210071.323.90$0
Nov 20211077.435.24$77
Oct 2021595979.795.71$5,045
Sep 202141613169.865.35$29,763
Aug 20211066.024.22$66
Jul 202113624470.783.98$10,598
Jun 202111748969.493.38$9,783
May 20212381,14963.483.02$18,576
Apr 20212831,18760.362.76$20,356
Mar 20214611,50661.302.72$32,351
Feb 202132893757.805.55$24,157
Jan 20218072,49450.412.81$47,690
Dec 202023294844.642.68$12,893
Nov 20201,0934,66238.772.71$54,994
Oct 20201,0954,31736.972.48$51,182
Sep 20201,0664,51737.091.99$48,531
Aug 20201,1214,11139.982.39$54,623
Jul 20201,0454,24038.371.83$47,835
Jun 20201,0454,47134.901.69$44,028
May 20201,0664,70016.921.81$26,566
Apr 20203885,67114.751.80$15,956
Mar 20203687,40430.341.86$24,909
Feb 20201778,17149.881.98$25,013
Jan 20201606,89757.252.09$23,607
Dec 20192631,11359.012.30$18,084
Nov 20199773,89755.302.75$64,748
Oct 20191,0193,67253.472.42$63,367
Sep 20191,1214,66555.052.66$74,107
Aug 20191,2194,54753.112.30$75,219
Jul 20191,3824,89356.272.46$89,802
Jun 20191,3714,89052.782.49$84,543
May 20191,4025,27358.482.74$96,439
Apr 20191,4615,19062.632.75$105,779
Mar 20192,8115,08956.803.06$175,248
Feb 20196004,02150.852.79$41,738
Jan 2019933,83646.033.23$16,664
Dec 20184882,64046.594.19$33,785
Nov 20183694,27152.934.24$37,628
Oct 20181,8115,19361.443.40$128,914
Sep 20181,8886,18359.543.11$131,628
Aug 20182,1437,54659.403.07$150,434
Jul 20182,5809,03665.142.93$194,554
Jun 20181,9325,88760.183.08$134,382
May 20187142,95165.382.90$55,242
Apr 20187202,89563.842.90$54,363
Mar 20187686,39261.222.79$64,830
Feb 20186825,59261.782.77$57,602
Jan 20184610162.874.01$3,297
Dec 20178846,65557.272.92$70,069
Nov 201799110,70355.423.12$88,297
Oct 20171,49610,99649.292.98$106,546
Sep 20171,5068,81347.523.09$98,773
Aug 20171,4519,65945.373.00$94,851
Jul 20171,91312,47743.873.09$122,443
Jun 20171,81112,25442.493.09$114,781
May 20171,96212,97045.373.26$131,342
Apr 20172,62913,14747.933.21$168,231
Mar 20172,57813,87446.772.98$161,969
Feb 20171,74512,75450.452.95$125,693
Jan 20172,25714,00349.413.42$159,392
Dec 20162,08612,88248.763.72$149,671
Nov 20162,43513,68242.492.64$139,643
Oct 20162,68013,90746.193.09$166,765
Sep 20162,69116,51641.553.10$163,021
Aug 20164,93418,49241.442.92$258,542
Jul 2016030941.622.92$904
Jun 20160045.352.69$0
May 201611042.521.99$468
Apr 20169715,39136.561.99$46,233
Mar 20162,31217,67033.011.79$108,019
Feb 20162,24617,29626.472.06$95,144
Jan 20162,54621,66727.352.36$120,862
Dec 20152,31618,29432.362.00$111,560
Nov 20152,48616,32438.792.17$131,811
Oct 20152,90017,32043.552.43$168,323
Sep 20152,69710,94942.992.76$146,146
Aug 20152,91410,46840.162.87$147,095
Jul 20152,93211,53748.152.95$175,153
Jun 20152,97111,96256.152.88$201,306
May 20153,18713,08955.212.96$214,638
Apr 20152,5219,07649.822.71$150,161
Mar 20153,79712,77542.892.93$200,344
Feb 20152,93413,20444.662.98$170,330
Jan 20153,57412,55943.433.10$194,160
Dec 20143,91914,53854.693.59$266,541
Nov 20143,56214,50870.464.25$312,664
Oct 20144,04613,65578.303.90$370,069
Sep 20143,76715,58686.164.05$387,617
Aug 20143,89417,96189.394.04$420,559
Jul 20144,18518,57396.564.18$481,731
Jun 20144,49717,81598.164.74$525,813
May 20144,79319,47294.734.73$546,076
Apr 20145,23919,34595.944.81$595,662
Mar 20145,70320,79395.895.06$652,007
Feb 20145,17019,60997.406.19$624,977
Jan 20146,13524,32290.404.86$672,826
Dec 20136,36127,45091.824.35$703,598
Nov 20137,53928,71888.853.74$777,196
Oct 20138,51164,79397.423.78$1,074,018
Sep 20135,81945,172104.113.72$773,754
Aug 20137,06437,848104.253.52$869,746
Jul 20138,50245,356102.523.72$1,040,247
Jun 20139,57146,63494.403.93$1,086,933
May 201312,00449,70794.834.15$1,344,578
Apr 201312,88147,42893.964.28$1,413,413
Mar 201315,74957,18993.623.91$1,698,195
Feb 201316,14454,89391.233.42$1,660,546
Jan 201319,33888,19491.603.42$2,072,976
Dec 201223,95366,74286.773.42$2,306,670
Nov 201201,31886.953.62$4,778
Oct 20120089.383.40$0

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.

Apr 2026 — as filed, then multipliedworked
Condensate            44 bbl  × $ 98.93 =     $4,353
Gas                    0 Mcf  × $  2.87 =         $0

────────────────────────────────────────────────────
Month total                                   $4,353

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/G/266858 is the state's own key, not one this site invented.