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ULVESTAD-BIRKHEAD E20G

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 51891District 08Field 85280300OilCasinghead gasSaveExport
Value, all time
$24.2 M
Feb 2019 – May 2026
Value, last 12 filed months
$1.0 M
at the published price for each month
Months reported
88
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 16,587 leases and 43,997 wells, and the rule below applies to all of them.

Discovered
1952-12-22
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 2018-02-13.

The Commission's schedule remark for this field reads: “SPRABERRY (TREND AREA) FIELD EFFECTIVE 10/1/2019.”

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
OilDisposition369,513 bbl$21,753,015
Casinghead gasProduction703,639 Mcf$2,468,555
Total$24,221,570

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 31.9058, -102.0960. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.0 miles.

31.90579, -102.09600 · 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
9,768 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 9,768 ft.

Completions filed
Feb 2019
1 of 1 wells

1 well

42-329426217H9,768 ftFeb 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 (88)

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

88 months

May 20267533,332106.413.05$90,275
Apr 2026131,81198.932.87$6,483
Mar 2026102,07889.753.15$7,442
Feb 20267227,17363.503.75$72,748
Jan 20267296,25759.138.00$93,149
Dec 20251,15810,26256.664.41$110,902
Nov 20251,22910,51458.593.93$113,290
Oct 20251,1339,38959.383.30$98,307
Sep 20251,1319,65162.743.08$100,654
Aug 20251,3659,34363.933.01$115,431
Jul 20251,3456,95966.743.32$112,836
Jun 20251,2705,18066.483.13$100,636
May 20251,2383,49660.553.23$86,261
Apr 20251,3893,37762.363.54$98,583
Mar 20251,4902,40067.704.27$111,117
Feb 20251,2233,13270.884.34$100,282
Jan 20251,3126,63774.324.28$125,905
Dec 20241,6812,82568.993.12$124,790
Nov 20241,4112,74669.052.20$103,466
Oct 20241,7241,95271.372.28$127,495
Sep 20241,6311,07869.612.36$116,083
Aug 20241,59511175.632.06$120,859
Jul 20241,1336979.932.15$90,709
Jun 202496914878.082.63$76,049
May 20247605278.812.20$60,010
Apr 20241,45310084.451.66$122,872
Mar 20241,2158680.301.55$97,697
Feb 202454122876.091.78$41,571
Jan 202420514473.023.30$15,444
Dec 20237091,24171.262.61$53,763
Nov 202325569877.892.81$21,822
Oct 202399788985.443.09$87,928
Sep 20232,1924,14189.042.74$206,501
Aug 20233,3615,53980.522.67$285,433
Jul 20233,3703,21874.852.64$260,746
Jun 20234,2882,76468.962.26$301,943
May 20231001,16870.622.23$9,664
Apr 20234694378.122.24$5,704
Mar 202317172.852.39$1,241
Feb 20230075.112.47$0
Jan 2023745076.533.39$2,060
Dec 202237376.415.73$2,844
Nov 20221,6004,43485.005.65$161,035
Oct 20222,6767,53987.185.86$277,501
Sep 20223,06213,72384.888.16$371,933
Aug 20223,87814,01594.529.13$494,466
Jul 20222,7627,495101.587.54$337,092
Jun 20222,0614,251115.097.98$271,112
May 20223,3297,637109.378.43$428,496
Apr 20223,4297,730104.226.84$410,225
Mar 20223,6146,330108.885.08$425,626
Feb 20223,1645,94091.054.86$316,944
Jan 20223,1985,43381.844.54$286,378
Dec 20213,0545,93371.323.90$240,945
Nov 20213,1777,79477.435.24$286,811
Oct 20213,63410,87179.795.71$352,072
Sep 20213,67812,80469.865.35$325,458
Aug 20213,89916,45566.024.22$326,862
Jul 20213,95818,62870.783.98$354,325
Jun 20214,14315,13369.493.38$339,056
May 20214,49515,61763.483.02$332,470
Apr 20213,91715,00960.362.76$277,831
Mar 20214,91310,16661.302.72$328,787
Feb 20213,0597,35657.805.55$217,621
Jan 20214,55312,72950.412.81$265,289
Dec 20204,23710,89244.642.68$218,281
Nov 20204,94512,48738.772.71$225,515
Oct 20206,20818,27236.972.48$274,796
Sep 20206,00117,44237.091.99$257,305
Aug 20206,15816,59439.982.39$285,775
Jul 20207,56516,35038.371.83$320,110
Jun 20206,4876,87034.901.69$238,009
May 20207,0728,11616.921.81$134,387
Apr 20207,41612,31214.751.80$131,602
Mar 20208,17312,86130.341.86$271,842
Feb 20208,05114,33049.881.98$429,967
Jan 20209,26814,26557.252.09$560,474
Dec 20199,99018,15059.012.30$631,334
Nov 201911,21622,62455.302.75$682,477
Oct 201914,16730,97353.472.42$832,419
Sep 201918,89737,73755.052.66$1,140,558
Aug 201913,4964,18053.112.30$726,405
Jul 20199,2441,56656.272.46$524,012
Jun 20191,22511052.782.49$64,930
May 201918,52217,95158.482.74$1,132,358
Apr 201920,79711,19262.632.75$1,333,302
Mar 201927,45320,56456.803.06$1,622,299
Feb 201916,46513,19450.852.79$874,086

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                  753 bbl  × $106.41 =    $80,127
Casinghead gas     3,332 Mcf  × $  3.05 =    $10,149

────────────────────────────────────────────────────
Month total                                  $90,275

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. 08/O/51891 is the state's own key, not one this site invented.