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UNIVERSITY 4-18

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 18258District 7CField 85279200OilCasinghead gasSaveExport
Value, all time
$32.1 M
Jun 2013 – May 2026
Value, last 12 filed months
$1.5 M
at the published price for each month
Months reported
156
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
OilDisposition417,875 bbl$29,738,333
Casinghead gasProduction670,993 Mcf$2,359,104
Total$32,097,436

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 31.1804, -101.7883. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.1 miles.

31.18040, -101.78831 · 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 2 wells
With a plug date
0.0%
0 of 2 wells
Median depth
8,336 ft
2 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.
2100.0%

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 8,272 and 8,399 ft, median 8,336 ft, over the 2 wells that filed a depth.

Completions filed
Jun 2013
2 of 2 wells

2 wells

42-461384992H8,399 ftJun 2013——
42-461384981H8,272 ftJun 2013——

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 (156)

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

156 months

May 20261,7804,879106.413.05$204,270
Apr 20261,6033,69698.932.87$169,191
Mar 20261,3823,25789.753.15$134,292
Feb 20261,6083,61763.503.75$115,673
Jan 20261,4843,98259.138.00$119,597
Dec 20251,5994,60556.664.41$110,923
Nov 20251,6273,24658.593.93$108,071
Oct 20251,4934,36659.383.30$103,083
Sep 20251,7135,42162.743.08$124,154
Aug 20251,7706,56363.933.01$132,942
Jul 20251,4447,14866.743.32$120,070
Jun 20251,2105,88966.483.13$98,866
May 20251,4616,68860.553.23$110,081
Apr 20251,4835,78362.363.54$112,970
Mar 20251,7756,11567.704.27$146,268
Feb 20251,8776,25270.884.34$160,181
Jan 20251,7406,87074.324.28$158,711
Dec 20241,8406,68268.993.12$147,799
Nov 20241,6636,43269.052.20$128,971
Oct 20241,9696,69471.372.28$155,799
Sep 20241,9296,61569.612.36$149,918
Aug 20242,5973,68075.632.06$204,005
Jul 20242,1061,14979.932.15$170,799
Jun 20242,1001,40678.082.63$167,671
May 20242,3271,61178.812.20$186,933
Apr 20242,3491,12384.451.66$200,236
Mar 20241,36425180.301.55$109,917
Feb 20241,97646876.091.78$151,189
Jan 20242,27144073.023.30$167,279
Dec 20232,49950171.262.61$179,387
Nov 20232,3571,37177.892.81$187,436
Oct 20232,28472385.443.09$197,377
Sep 20232,44834489.042.74$218,911
Aug 20232,53742080.522.67$205,402
Jul 20232,37249774.852.64$178,857
Jun 20232,09050268.962.26$145,260
May 20232,08529870.622.23$147,906
Apr 20231,92747078.122.24$151,589
Mar 20232,68544072.852.39$196,655
Feb 20235,6751,95075.112.47$431,057
Jan 20235,0862,01576.533.39$396,058
Dec 20220076.415.73$0
Nov 20220085.005.65$0
Oct 20220087.185.86$0
Sep 20222084.888.16$170
Aug 202269894.529.13$6,595
Jul 20221,066487101.587.54$111,957
Jun 2022907960115.097.98$112,045
May 20221,3455,144109.378.43$190,482
Apr 20224861,435104.226.84$60,463
Mar 202225695108.885.08$28,356
Feb 20221,4913,41491.054.86$152,344
Jan 20222,1978,08081.844.54$216,467
Dec 20212,2536,59771.323.90$186,406
Nov 20212,2628,89177.435.24$221,707
Oct 20212,9456,14079.795.71$270,065
Sep 20212,8754,43669.865.35$224,584
Aug 20214,8033,26566.024.22$330,874
Jul 20214,3903,44570.783.98$324,442
Jun 20211,48768069.493.38$105,630
May 20211,51248063.483.02$97,430
Apr 20211,87373160.362.76$115,071
Mar 20211,30949661.302.72$81,589
Feb 20212346057.805.55$13,858
Jan 202147429050.412.81$24,709
Dec 202083696344.642.68$39,896
Nov 202036347238.772.71$15,351
Oct 20206221,08736.972.48$25,689
Sep 20209931,19737.091.99$39,214
Aug 202069375339.982.39$29,502
Jul 20209521,34638.371.83$38,985
Jun 20208911,90834.901.69$34,321
May 20201,2002,63816.921.81$25,091
Apr 20201,1892,44714.751.80$21,953
Mar 20201,4753,60030.341.86$51,434
Feb 20201,1266,09649.881.98$68,239
Jan 20201,5667,32857.252.09$105,004
Dec 20192,46211,74059.012.30$172,336
Nov 20192,1807,06355.302.75$139,982
Oct 20191,6424,76153.472.42$99,312
Sep 20192,2814,78955.052.66$138,295
Aug 20193,2414,75053.112.30$183,075
Jul 20191,0162,05156.272.46$62,216
Jun 20198771,37652.782.49$49,716
May 20191,6752,79858.482.74$105,621
Apr 20191,4842,30362.632.75$99,278
Mar 20191,7828,45456.803.06$127,105
Feb 20192,0449,00950.852.79$129,093
Jan 20192,8596,45546.033.23$152,438
Dec 20182,7622,71146.594.19$140,028
Nov 20189472,16952.934.24$59,315
Oct 20181,1533,16261.443.40$81,585
Sep 20181,7083,57159.543.11$112,793
Aug 20181,8373,75459.403.07$120,630
Jul 20181,9203,98365.142.93$136,746
Jun 20181,7723,95060.183.08$118,793
May 20181,6654,48265.382.90$121,859
Apr 20181,8624,56263.842.90$132,104
Mar 20181,8174,82961.222.79$124,694
Feb 20181,7574,29361.782.77$120,422
Jan 20182,0916,93562.874.01$159,266
Dec 20172,1066,28957.272.92$138,984
Nov 20172,0945,83655.423.12$134,248
Oct 20171,9765,84449.292.98$114,834
Sep 20172,1137,24947.523.09$122,789
Aug 20172,3685,72445.373.00$124,633
Jul 20172,3572,19243.873.09$110,169
Jun 20172,6223,09342.493.09$120,958
May 20172,8063,35545.373.26$138,257
Apr 20171,20074447.933.21$59,905
Mar 20172,5063,72946.772.98$128,332
Feb 20172,7064,13550.452.95$148,727
Jan 20172,6313,30549.413.42$141,297
Dec 20162,0162,88648.763.72$109,044
Nov 20162,5243,31942.492.64$116,021
Oct 20162,3853,76246.193.09$121,789
Sep 20162,3914,18041.553.10$112,307
Aug 20162,4194,15841.442.92$112,403
Jul 20162,4362,64441.622.92$109,118
Jun 20162,3512,15245.352.69$112,398
May 20162,4592,06042.521.99$108,658
Apr 20162,6002,15536.561.99$99,347
Mar 20162,6862,15333.011.79$92,527
Feb 20162,5882,33826.472.06$73,329
Jan 20162,9052,40027.352.36$85,126
Dec 20153,1062,78732.362.00$106,088
Nov 20152,8523,43138.792.17$118,065
Oct 20153,0313,48643.552.43$140,459
Sep 20152,9483,48042.992.76$136,334
Aug 20153,3114,25740.162.87$145,198
Jul 20153,5393,69548.152.95$181,285
Jun 20153,3434,37756.152.88$200,328
May 20153,5994,90755.212.96$213,203
Apr 20152,9915,79949.822.71$164,707
Mar 20154,1605,06942.892.93$193,298
Feb 20153,6604,92644.662.98$178,116
Jan 20155,2534,87543.433.10$243,253
Dec 20143,5258,80054.693.59$224,386
Nov 20144,46112,76170.464.25$368,580
Oct 20144,51913,44878.303.90$406,298
Sep 20144,45014,71386.164.05$442,933
Aug 20144,96313,76289.394.04$499,174
Jul 20144,67810,81596.564.18$496,910
Jun 20145,12912,68698.164.74$563,555
May 20145,7387,99494.734.73$581,345
Apr 20145,70510,63295.944.81$598,468
Mar 20145,6926,32695.895.06$577,795
Feb 20145,7305,68997.406.19$593,328
Jan 20146,7309,79690.404.86$656,008
Dec 20136,90911,37691.824.35$683,921
Nov 20137,67010,73888.853.74$721,621
Oct 20138,69112,66697.423.78$894,547
Sep 201310,66214,617104.113.72$1,164,363
Aug 201314,2209,426104.253.52$1,515,639
Jul 201317,0528,601102.523.72$1,780,147
Jun 201315,7525,97894.403.93$1,510,503

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                1,780 bbl  × $106.41 =   $189,410
Casinghead gas     4,879 Mcf  × $  3.05 =    $14,861

────────────────────────────────────────────────────
Month total                                 $204,270

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/18258 is the state's own key, not one this site invented.