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HALFF-HALL 1BB

Operated by PIONEER NATURAL RES. USA, INC. (P-5 665748) in the SPRABERRY (TREND AREA) R 40 EXC field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 20534District 7CField 85279201OilCasinghead gasSaveExport
Value, all time
$31.7 M
May 2019 – May 2026
Value, last 12 filed months
$1.8 M
at the published price for each month
Months reported
85
no gaps in the span
Streams
2
oil, casinghead gas

The SPRABERRY (TREND AREA) R 40 EXC 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 721 leases and 1,413 wells, and the rule below applies to all of them.

Discovered
2013-12-18
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 2024-02-01.

The Commission's schedule remark for this field reads: “ALLOCATION FORMULA EFFECTIVE 02/01/2024.”

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
OilDisposition428,792 bbl$26,717,598
Casinghead gasProduction1,382,230 Mcf$5,031,557
Total$31,749,154

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 31.7417, -100.7609. A lease has no coordinate of its own — that point is the mean of its wells, and they span 121.7 miles, so treat it as the lease's centre and not as its location.

31.74174, -100.76087 · 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
6,925 ft
2 wells filed one
Completion to plug
4.3 years
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 4,625 and 9,225 ft, median 6,925 ft, over the 2 wells that filed a depth.

Completions filed
Nov 1983 – May 2019
2 of 2 wells
Plug dates filed
Feb 1988
1 of 2 wells; 1 filed none

Last completion to plug: a median of 4.3 years across the 1 well that filed both dates, with the middle half between 4.3 years and 4.3 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

2 wells

42-46140919102H9,225 ftMay 2019——
42-3993281124,625 ftNov 1983Feb 1988Yes

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 (85)

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

85 months

May 20261,61214,537106.413.05$215,810
Apr 20261,34613,42098.932.87$171,671
Mar 20261,50911,76689.753.15$172,489
Feb 20261,9219,38863.503.75$157,192
Jan 202680212,88759.138.00$150,491
Dec 202579410,84956.664.41$92,869
Nov 20251,3557,94858.593.93$110,597
Oct 20251,30310,11459.383.30$110,797
Sep 20252,0629,66062.743.08$159,093
Aug 20251,9449,25563.933.01$152,182
Jul 20252,3557,82666.743.32$183,117
Jun 20252,1203,82366.483.13$152,899
May 20251,8401,21960.553.23$115,352
Apr 20254612462.363.54$28,833
Mar 20252481367.704.27$16,845
Feb 20253935,19770.884.34$50,415
Jan 20251,15313,87674.324.28$145,062
Dec 20241,00519,23368.993.12$129,368
Nov 20241,12215,57769.052.20$111,719
Oct 202492817,93271.372.28$107,141
Sep 20241,34616,29169.612.36$132,213
Aug 20241,14712,43375.632.06$112,405
Jul 20241,13811,38979.932.15$115,408
Jun 20241,04012,09678.082.63$113,064
May 20241,1951,54078.812.20$97,564
Apr 20241,04439584.451.66$88,821
Mar 20241,79523,76680.301.55$180,860
Feb 20242,11020,02676.091.78$196,269
Jan 20242,77518,22573.023.30$262,730
Dec 20233,47317,49071.262.61$293,147
Nov 20233,26620,14077.892.81$310,933
Oct 20232,88423,41185.443.09$318,685
Sep 20233,27014,47289.042.74$330,742
Aug 20233,39614,81380.522.67$313,039
Jul 20233,61714,11374.852.64$308,016
Jun 20233,34313,77968.962.26$261,653
May 20233,15614,39970.622.23$254,949
Apr 20233,07619,63178.122.24$284,227
Mar 20233,44919,78772.852.39$298,613
Feb 20233,22417,92775.112.47$286,357
Jan 20233,86220,45376.533.39$364,848
Dec 20223,69320,20776.415.73$397,950
Nov 20224,57624,38085.005.65$526,614
Oct 20224,33623,53887.185.86$516,034
Sep 20224,40325,13884.888.16$578,945
Aug 20224,22523,80894.529.13$616,646
Jul 20224,26024,157101.587.54$614,925
Jun 20224,97527,659115.097.98$793,214
May 20226,33528,143109.378.43$930,190
Apr 20225,88327,479104.226.84$801,017
Mar 20225,34731,852108.885.08$743,875
Feb 20224,86025,53791.054.86$566,583
Jan 20225,58919,36281.844.54$545,262
Dec 20217,95216,85871.323.90$632,868
Nov 20216,1648,48077.435.24$521,687
Oct 20214,7396,06479.795.71$412,774
Sep 20213,5665,81369.865.35$280,226
Aug 20214,80510,95566.024.22$363,463
Jul 20217,38215,27770.783.98$583,332
Jun 20217,07623,14769.493.38$569,962
May 20215,02125,88963.483.02$396,858
Apr 20214,69226,19560.362.76$355,466
Mar 20215,36918,47261.302.72$379,307
Feb 20215,4819,39457.805.55$368,919
Jan 20219,54114,86050.412.81$522,722
Dec 20207,89216,61444.642.68$396,749
Nov 20207,51619,24938.772.71$343,494
Oct 20207,75817,67136.972.48$330,610
Sep 20207,85118,34937.091.99$327,727
Aug 20208,50819,54939.982.39$386,776
Jul 20208,17218,62438.371.83$347,551
Jun 20207,67823,52234.901.69$307,722
May 20206,97920,82916.921.81$155,884
Apr 20206,01512,41614.751.80$111,124
Mar 20208,13319,65130.341.86$283,232
Feb 20207,62918,13149.881.98$416,446
Jan 20209,70323,77257.252.09$605,293
Dec 201911,26321,33659.012.30$713,795
Nov 201912,98318,12055.302.75$767,803
Oct 201913,04211,80053.472.42$725,895
Sep 201914,96013,86455.052.66$860,389
Aug 201915,28217,08353.112.30$850,992
Jul 201918,10921,69956.272.46$1,072,374
Jun 201925,05625,61752.782.49$1,386,273
May 201914,11420,55058.482.74$881,700

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                1,612 bbl  × $106.41 =   $171,533
Casinghead gas    14,537 Mcf  × $  3.05 =    $44,277

────────────────────────────────────────────────────
Month total                                 $215,810

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/20534 is the state's own key, not one this site invented.