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MCWILLIAMS-O'NEILL EF

Operated by TRAILBLAZER ENERGY RESOURCES,LLC (P-5 100797) in the BRISCOE RANCH (EAGLEFORD) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 19838District 01Field 12018200Hydrogen sulphide fieldOilCasinghead gasSaveExport
Value, all time
$8.7 M
Jul 2019 – May 2026
Value, last 12 filed months
$511 k
at the published price for each month
Months reported
83
no gaps in the span
Streams
2
oil, casinghead gas

The BRISCOE RANCH (EAGLEFORD) 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 5,584 leases and 8,017 wells, and the rule below applies to all of them.

Discovered
2007-11-05
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 2013-04-09.

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: “MAY ELECT TO CLASSIFY AS PERMANENT GAS WELL”

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
OilDisposition113,250 bbl$6,709,778
Casinghead gasProduction592,878 Mcf$1,950,231
Total$8,660,009

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 28.8269, -99.2706. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.0 miles.

28.82689, -99.27063 · 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
6,350 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 6,350 ft.

Completions filed
Jul 2019
1 of 1 wells

1 well

42-163341811H6,350 ftJul 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 (83)

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

83 months

May 20263283,889106.413.05$46,748
Apr 20263373,80698.932.87$44,262
Mar 20264803,90889.753.15$55,388
Feb 20263343,74663.503.75$35,258
Jan 20263334,19059.138.00$53,202
Dec 20255194,07456.664.41$47,387
Nov 20253574,03658.593.93$36,764
Oct 20253374,26959.383.30$34,119
Sep 20253194,25662.743.08$33,109
Aug 20253473,96763.933.01$34,143
Jul 20253445,34866.743.32$40,688
Jun 20255085,22466.483.13$50,116
May 202517819,70860.553.23$74,480
Apr 20253425,00862.363.54$39,071
Mar 20254835,69267.704.27$56,994
Feb 20256745,73670.884.34$72,672
Jan 20255176,68974.324.28$67,044
Dec 20245115,38268.993.12$52,053
Nov 20246864,42269.052.20$57,090
Oct 20245172,36971.372.28$42,303
Sep 20243382,75369.612.36$30,037
Aug 20245153,08675.632.06$45,318
Jul 20245092,98079.932.15$47,081
Jun 20246752,75078.082.63$59,947
May 20246553,33578.812.20$58,952
Apr 20245093,24484.451.66$48,367
Mar 20247183,57480.301.55$63,178
Feb 20243782,93476.091.78$33,995
Jan 20247553,70973.023.30$67,361
Dec 20237533,47171.262.61$62,721
Nov 20239343,82877.892.81$83,497
Oct 20235634,28085.443.09$61,316
Sep 20237313,84489.042.74$75,602
Aug 20238583,37280.522.67$78,099
Jul 20231873,08774.852.64$22,152
Jun 20237424,05568.962.26$60,326
May 20236863,77670.622.23$56,856
Apr 20231,0774,62978.122.24$94,494
Mar 20236334,25472.852.39$56,295
Feb 20234793,58975.112.47$44,827
Jan 20231,2765,47176.533.39$116,187
Dec 20221572,13476.415.73$24,222
Nov 20221,1196,27785.005.65$130,556
Oct 20227856,35887.185.86$105,718
Sep 20226315,46984.888.16$98,206
Aug 20229646,36594.529.13$149,212
Jul 20229516,145101.587.54$142,949
Jun 20226256,098115.097.98$120,576
May 20229447,353109.378.43$165,253
Apr 20229497,512104.226.84$150,269
Mar 20221,1136,720108.885.08$155,297
Feb 20229475,28091.054.86$111,879
Jan 20221,2916,12481.844.54$133,444
Dec 20219635,96471.323.90$91,936
Nov 20216285,60577.435.24$77,979
Oct 20211,4275,51079.795.71$145,344
Sep 20216326,55769.865.35$79,238
Aug 20211,2836,33366.024.22$111,433
Jul 20217846,42270.783.98$81,064
Jun 20211,2747,03769.493.38$112,320
May 20211,3086,67263.483.02$103,166
Apr 20211,1617,34260.362.76$90,330
Mar 20211,4586,65961.302.72$107,468
Feb 20219646,55757.805.55$92,097
Jan 20211,6128,80450.412.81$106,003
Dec 20201,4429,62544.642.68$90,122
Nov 20201,43010,20638.772.71$83,064
Oct 20202,21911,61336.972.48$110,818
Sep 20202,03810,95737.091.99$97,405
Aug 20202,08112,02839.982.39$111,886
Jul 20202,40012,04638.371.83$114,073
Jun 20202,89311,66134.901.69$120,676
May 20202,57513,04116.921.81$67,235
Apr 20202,73512,89014.751.80$63,600
Mar 20202,73717,68230.341.86$115,862
Feb 20203,17415,02149.881.98$188,071
Jan 20203,93316,68057.252.09$260,105
Dec 20194,31321,53659.012.30$304,137
Nov 20194,96619,45555.302.75$328,135
Oct 20196,13219,43653.472.42$374,885
Sep 20196,78318,50555.052.66$422,577
Aug 20198,50720,63553.112.30$499,357
Jul 20196,5006,82456.272.46$382,542

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                  328 bbl  × $106.41 =    $34,902
Casinghead gas     3,889 Mcf  × $  3.05 =    $11,845

────────────────────────────────────────────────────
Month total                                  $46,748

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. 01/O/19838 is the state's own key, not one this site invented.