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HALFF 2B

Operated by PIONEER NATURAL RES. USA, INC. (P-5 665748) in the SPRABERRY (TREND AREA) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 18580District 7CField 85279200OilCasinghead gasSaveExport
Value, all time
$4.9 M
Dec 2013 – May 2026
Value, last 12 filed months
$0
at the published price for each month
Months reported
150
no gaps in the span
Streams
2
oil, casinghead gas

The SPRABERRY (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 7,461 leases and 22,481 wells, and the rule below applies to all of them.

Discovered
1904-12-31
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 2016-03-08.

The Commission's schedule remark for this field reads: “AREA) 85279200.”

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
OilDisposition71,653 bbl$4,283,758
Casinghead gasProduction202,255 Mcf$643,002
Total$4,926,760

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 31.3893, -101.7977. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.3 miles.

31.38927, -101.79770 · 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
50.0%
1 of 2 wells
With a plug date
50.0%
1 of 2 wells
Median depth
11,290 ft
2 wells filed one
Completion to plug
8 months
median over 1 well

What the state filed about each well

On the RRC proration schedule
150.0%
A plug date is filed
150.0%
BothOn the schedule and plugged. Neither fact cancels the other.
150.0%
NeitherNo plug date, and not on the schedule.
150.0%

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 10,912 and 11,667 ft, median 11,290 ft, over the 2 wells that filed a depth.

Completions filed
Feb 2014 – Aug 2025
2 of 2 wells
Plug dates filed
Apr 2026
1 of 2 wells; 1 filed none

Last completion to plug: a median of 8 months across the 1 well that filed both dates, with the middle half between 8 months and 8 months. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

2 wells

42-46139356211,667 ftAug 2025Apr 2026Yes
42-46139095110,912 ftFeb 2014——

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 (150)

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

150 months

May 202600106.413.05$0
Apr 20260098.932.87$0
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 20230089.042.74$0
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 20220084.888.16$0
Aug 20220094.529.13$0
Jul 202200101.587.54$0
Jun 202200115.097.98$0
May 202200109.378.43$0
Apr 202200104.226.84$0
Mar 202200108.885.08$0
Feb 20220091.054.86$0
Jan 20220081.844.54$0
Dec 20210071.323.90$0
Nov 202143077.435.24$3,329
Oct 202141079.795.71$3,271
Sep 20210069.865.35$0
Aug 20210066.024.22$0
Jul 20210070.783.98$0
Jun 20210069.493.38$0
May 20210063.483.02$0
Apr 20210060.362.76$0
Mar 2021267061.302.72$16,367
Feb 20215057.805.55$289
Jan 20210050.412.81$0
Dec 20206041,57144.642.68$31,166
Nov 20207311,98438.772.71$33,711
Oct 20203211,29136.972.48$15,067
Sep 20205492,24037.091.99$24,822
Aug 20205961,55439.982.39$27,535
Jul 20206971,47338.371.83$29,432
Jun 20205112,94934.901.69$22,819
May 20206972,14616.921.81$15,688
Apr 20208081,55514.751.80$14,724
Mar 202016462230.341.86$6,130
Feb 202015228149.881.98$8,138
Jan 20206601,61257.252.09$41,162
Dec 20196761,80859.012.30$44,057
Nov 20193251,30755.302.75$21,568
Oct 20194991,69053.472.42$30,769
Sep 20194861,58155.052.66$30,955
Aug 20194831,65553.112.30$29,466
Jul 20197641,92256.272.46$47,719
Jun 20194941,35852.782.49$29,456
May 20195971,72858.482.74$39,648
Apr 20195511,80362.632.75$39,469
Mar 20195171,63956.803.06$34,384
Feb 20195981,46950.852.79$34,510
Jan 20195651,51346.033.23$30,891
Dec 20186551,55246.594.19$37,012
Nov 20187061,43352.934.24$43,441
Oct 20184871,59161.443.40$35,328
Sep 20185511,39459.543.11$37,139
Aug 201816461959.403.07$11,640
Jul 20183841,30265.142.93$28,831
Jun 20182751,74260.183.08$21,909
May 20185572,45865.382.90$43,547
Apr 20186941,13863.842.90$47,606
Mar 20185521,85061.222.79$38,949
Feb 20188061,54461.782.77$54,066
Jan 20184611,40862.874.01$34,628
Dec 20175721,95757.272.92$38,476
Nov 20175942,59855.423.12$41,021
Oct 20176511,88649.292.98$37,715
Sep 20173442,93247.523.09$25,399
Aug 20177031,60745.373.00$36,723
Jul 20176172,03843.873.09$33,360
Jun 20177743,63342.493.09$44,103
May 20173851,78145.373.26$23,280
Apr 20177521,90747.933.21$42,168
Mar 20178112,14346.772.98$44,325
Feb 20176122,05450.452.95$36,940
Jan 20176982,15649.413.42$41,859
Dec 20161,1102,47548.763.72$63,338
Nov 20166702,23342.492.64$34,373
Oct 20169462,47646.193.09$51,347
Sep 20169713,22241.553.10$50,335
Aug 20165571,74941.442.92$28,197
Jul 201631041.622.92$1,290
Jun 2016281045.352.69$12,743
May 20165772,51542.521.99$29,542
Apr 20167832,53136.561.99$33,666
Mar 20166791,85233.011.79$25,736
Feb 20165742,54626.472.06$20,448
Jan 20167302,36327.352.36$25,552
Dec 20151,0052,65232.362.00$37,830
Nov 20157712,81138.792.17$35,999
Oct 20159161,96043.552.43$44,648
Sep 20151,32385142.992.76$59,223
Aug 201582931040.162.87$34,183
Jul 20151,0011,80948.152.95$53,526
Jun 20151,35198056.152.88$78,684
May 20151,3495,25355.212.96$90,003
Apr 20151,9849,65249.822.71$124,967
Mar 20151,9397,04942.892.93$103,850
Feb 20151,6015,21444.662.98$87,019
Jan 20154755,06343.433.10$36,328
Dec 20149182,32554.693.59$58,555
Nov 20141,3743,59470.464.25$112,093
Oct 20141,7654,04578.303.90$153,979
Sep 20142,1674,25586.164.05$203,922
Aug 20143,7997,30389.394.04$369,061
Jul 20141,7136,98096.564.18$194,581
Jun 20141,3334,35898.164.74$151,491
May 20141,2343,62594.734.73$134,031
Apr 20142,2743,93095.944.81$237,067
Mar 20142,4235,46395.895.06$259,967
Feb 20145481,48197.406.19$62,546
Jan 20141,0391,43890.404.86$100,915
Dec 20131,4072,41891.824.35$139,720

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.

Nov 2021 — as filed, then multipliedworked
Oil                   43 bbl  × $ 77.43 =     $3,329
Casinghead gas         0 Mcf  × $  5.24 =         $0

────────────────────────────────────────────────────
Month total                                   $3,329

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. 7C/O/18580 is the state's own key, not one this site invented.