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TUBB 21 L UNIT

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 49140District 08Field 85280301Hydrogen sulphide fieldOilCasinghead gasSaveExport
Value, all time
$79.1 M
Jun 2017 – May 2026
Value, last 12 filed months
$2.4 M
at the published price for each month
Months reported
108
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 581 leases and 1,079 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 2016-03-08.

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: “DESIGNATED AS UFT FIELD PER DOCKET 01-0299858”

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
OilDisposition1,204,177 bbl$68,127,896
Casinghead gasProduction3,298,950 Mcf$10,949,165
Total$79,077,061

Wells on this lease (3)

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 31.9085, -102.0850. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.3 miles.

31.90855, -102.08512 · 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 3 wells
With a plug date
0.0%
0 of 3 wells
Median depth
9,803 ft
3 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.
3100.0%

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 9,801 and 9,811 ft, median 9,803 ft, over the 3 wells that filed a depth.

Completions filed
Jun 2017 – Jul 2017
3 of 3 wells

3 wells

42-329409853H9,811 ftJul 2017——
42-329409831H9,803 ftJul 2017——
42-329409875H9,801 ftJun 2017——

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 (108)

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

108 months

May 202683517,879106.413.05$143,309
Apr 20261,15019,96398.932.87$171,058
Mar 20261,16520,28989.753.15$168,458
Feb 20261,18923,04863.503.75$161,939
Jan 20261,52031,01359.138.00$337,917
Dec 20251,33229,08656.664.41$203,838
Nov 20251,36329,02358.593.93$193,815
Oct 20251,57431,04759.383.30$196,069
Sep 20251,43027,40862.743.08$174,050
Aug 20251,51633,37263.933.01$197,526
Jul 20251,60031,08366.743.32$209,830
Jun 20251,63031,19366.483.13$205,957
May 20251,53631,45760.553.23$194,684
Apr 20251,55328,12762.363.54$196,502
Mar 20251,75527,81367.704.27$237,528
Feb 20251,84523,97270.884.34$234,832
Jan 20251,75016,38374.324.28$200,158
Dec 20241,91718,90768.993.12$191,270
Nov 20241,89219,52569.052.20$173,567
Oct 20242,21321,41871.372.28$206,805
Sep 20242,24519,45569.612.36$202,273
Aug 20242,68318,79575.632.06$241,701
Jul 20242,19512,97679.932.15$203,301
Jun 20242,43811,25278.082.63$219,997
May 20241,8827,78478.812.20$165,433
Apr 20242,79810,93084.451.66$254,426
Mar 20242,65610,02780.301.55$228,770
Feb 20242,4355,83176.091.78$195,680
Jan 20242,6344,94473.023.30$208,638
Dec 20232,9125,56371.262.61$222,033
Nov 20232,3144,44277.892.81$192,709
Oct 20232,3395,62385.443.09$217,204
Sep 20233,0996,39089.042.74$293,412
Aug 20233,1834,81680.522.67$269,168
Jul 202396592574.852.64$74,674
Jun 20239851,51768.962.26$71,352
May 20231,6665,74170.622.23$130,440
Apr 20239233,83778.122.24$80,691
Mar 20232,0448,27572.852.39$168,709
Feb 20233,8468,63175.112.47$310,154
Jan 20232,3156,96276.533.39$200,752
Dec 20222,62511,93676.415.73$268,959
Nov 20222313,42985.005.65$38,996
Oct 20222,21112,01787.185.86$263,220
Sep 20223,02620,27584.888.16$422,365
Aug 20223,54020,88494.529.13$525,212
Jul 20224,36420,776101.587.54$599,989
Jun 20223,99715,661115.097.98$584,946
May 20224,76917,413109.378.43$668,430
Apr 20228,05321,696104.226.84$987,632
Mar 20225701,296108.885.08$68,641
Feb 20223201,37291.054.86$35,802
Jan 20222,29417,87981.844.54$268,870
Dec 20213,12021,51171.323.90$306,392
Nov 20214,73231,53577.435.24$531,543
Oct 20215,10341,87179.795.71$646,414
Sep 20214,41335,03369.865.35$495,751
Aug 20215,00637,80366.024.22$490,047
Jul 20214,92936,83570.783.98$495,555
Jun 20215,12037,83069.493.38$483,678
May 20215,58139,38463.483.02$473,130
Apr 20215,83337,20160.362.76$454,696
Mar 20216,22430,76061.302.72$465,104
Feb 20213,98824,42157.805.55$365,993
Jan 20216,36533,07150.412.81$413,798
Dec 20206,33242,18044.642.68$395,511
Nov 20207,12538,13938.772.71$379,462
Oct 20208,19240,04336.972.48$402,102
Sep 20207,66338,31737.091.99$360,511
Aug 20206,88639,68039.982.39$369,943
Jul 20208,45151,04738.371.83$417,432
Jun 20208,62947,33034.901.69$381,154
May 20208,89549,47216.921.81$240,283
Apr 20209,37840,34314.751.80$211,120
Mar 202010,15937,19530.341.86$377,267
Feb 202010,82031,76849.881.98$602,624
Jan 202012,00932,69657.252.09$756,005
Dec 201910,37127,35059.012.30$675,017
Nov 20199,51421,87555.302.75$586,296
Oct 20199,49217,95853.472.42$550,969
Sep 201911,41112,91955.052.66$662,505
Aug 201913,47920,56053.112.30$763,247
Jul 201914,13321,07356.272.46$847,105
Jun 201913,28119,40652.782.49$749,315
May 201913,26018,95858.482.74$827,396
Apr 201911,72512,47562.632.75$768,652
Mar 20199,3529,10156.803.06$559,062
Feb 20194,8978,54150.852.79$272,861
Jan 20198,47321,38646.033.23$459,050
Dec 201820,25270,97846.594.19$1,240,615
Nov 201821,56270,39752.934.24$1,439,566
Oct 201824,28583,06861.443.40$1,774,342
Sep 201826,19587,79459.543.11$1,832,514
Aug 201828,95098,31959.403.07$2,021,131
Jul 201837,234120,98265.142.93$2,780,127
Jun 201837,59482,17760.183.08$2,515,259
May 201849,914131,56965.382.90$3,645,033
Apr 201847,45696,25263.842.90$3,308,799
Mar 201846,56072,50961.222.79$3,052,474
Feb 201822,60126,24161.782.77$1,468,876
Jan 201827,05925,42262.874.01$1,803,124
Dec 201736,38234,30357.272.92$2,183,814
Nov 201764,02973,02755.423.12$3,776,212
Oct 201783,17076,60849.292.98$4,328,023
Sep 2017109,11196,10847.523.09$5,481,667
Aug 201742,81040,20145.373.00$2,063,070
Jul 201769,35064,33243.873.09$3,240,995
Jun 2017024042.493.09$741

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                  835 bbl  × $106.41 =    $88,852
Casinghead gas    17,879 Mcf  × $  3.05 =    $54,457

────────────────────────────────────────────────────
Month total                                 $143,309

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/49140 is the state's own key, not one this site invented.