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FOUR CORNERS TXL FEE 'B'

Operated by DIAMONDBACK E&P LLC (P-5 217012) in the SALLIE ANN (SPRABERRY-WOLFCAMP) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 45228District 08Field 79820800OilCasinghead gasSaveExport
Value, all time
$14.9 M
Jun 2014 – May 2026
Value, last 12 filed months
$111 k
at the published price for each month
Months reported
144
no gaps in the span
Streams
2
oil, casinghead gas

The SALLIE ANN (SPRABERRY-WOLFCAMP) 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 125 leases and 849 wells, and the rule below applies to all of them.

Discovered
2004-12-13
as the register files it
Field class
Oil and gas
the register's own label
Between wells
500 ft
minimum
From a lease line
660 ft
minimum

A drilling unit in this field needs at least 40 acres. The field rule took effect on 2012-11-20.

The Commission's schedule remark for this field reads: “FIELDS”

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
OilDisposition243,093 bbl$13,380,081
Casinghead gasProduction496,476 Mcf$1,504,553
Total$14,884,635

Wells on this lease (12)

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 31.6640, -102.3229. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.9 miles.

31.66330, -102.32422 · 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
8.3%
1 of 12 wells
With a plug date
8.3%
1 of 12 wells
Median depth
11,234 ft
12 wells filed one
Completion to plug
3.3 years
median over 1 well

What the state filed about each well

On the RRC proration schedule
18.3%
A plug date is filed
18.3%
BothOn the schedule and plugged. Neither fact cancels the other.
18.3%
NeitherNo plug date, and not on the schedule.
1191.7%

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

Total depth in feet, 12 of 12 wells. Median 11,234 ft, with the middle half between 11,199 and 11,273 ft; the shallowest is 10,710 ft and the deepest 11,375 ft. The median is published rather than the mean, because a single mis-keyed depth moves a mean and cannot move a median.

When they were last completed

Last completion by decade, 12 of 12 wells, Jun 2014 – Nov 2014. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Jun 2014 – Nov 2014
12 of 12 wells
Plug dates filed
Oct 2017
1 of 12 wells; 11 filed none

Last completion to plug: a median of 3.3 years across the 1 well that filed both dates, with the middle half between 3.3 years and 3.3 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

12 wells

42-135429750908E11,240 ftNov 2014——
42-135429780905E10,710 ftNov 2014——
42-135429770912E11,254 ftNov 2014——
42-135429760916E11,200 ftOct 2014——
42-135429810901E11,275 ftOct 2014——
42-135429820913E11,195 ftSep 2014——
42-135429830904E11,228 ftSep 2014——
42-135429800910E11,280 ftAug 2014——
42-135429790906E11,214 ftAug 2014——
42-135429740909E11,185 ftJul 2014Oct 2017Yes
42-135429320914E11,272 ftJun 2014——
42-135429650902E11,375 ftJun 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 (144)

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

144 months

May 202696366106.413.05$11,330
Apr 20269936498.932.87$10,839
Mar 202610040789.753.15$10,257
Feb 202613136263.503.75$9,676
Jan 202613637859.138.00$11,065
Dec 202511124256.664.41$7,357
Nov 202513520858.593.93$8,726
Oct 202519322259.383.30$12,194
Sep 202510514062.743.08$7,018
Aug 202512410363.933.01$8,238
Jul 20259211366.743.32$6,515
Jun 202510412666.483.13$7,308
May 20251127760.553.23$7,030
Apr 2025107962.363.54$6,704
Mar 2025119067.704.27$8,056
Feb 2025126070.884.34$8,931
Jan 20251441274.324.28$10,753
Dec 202423539868.993.12$17,455
Nov 202426634769.052.20$19,130
Oct 202420914771.372.28$15,252
Sep 2024116069.612.36$8,075
Aug 2024161075.632.06$12,176
Jul 20242155679.932.15$17,305
Jun 20242326978.082.63$18,296
May 20243829378.812.20$30,310
Apr 2024425084.451.66$35,891
Mar 20247423180.301.55$59,631
Feb 20243326276.091.78$25,372
Jan 202428438173.023.30$21,994
Dec 202331646271.262.61$23,724
Nov 202395757777.892.81$76,161
Oct 20231,16036985.443.09$100,250
Sep 20231,07027589.042.74$96,025
Aug 202354152980.522.67$44,975
Jul 202329350274.852.64$23,257
Jun 202343060968.962.26$31,028
May 202390749870.622.23$65,162
Apr 202386947178.122.24$68,940
Mar 202397747572.852.39$72,311
Feb 202398952475.112.47$75,576
Jan 20231,02856376.533.39$80,580
Dec 202290457276.415.73$72,352
Nov 202260840685.005.65$53,972
Oct 202294383387.185.86$87,095
Sep 20227431,04284.888.16$71,572
Aug 202279588094.529.13$83,175
Jul 20226671,039101.587.54$75,590
Jun 2022421912115.097.98$55,728
May 2022408868109.378.43$51,943
Apr 2022536534104.226.84$59,513
Mar 20226531,184108.885.08$77,109
Feb 20224681,00991.054.86$47,514
Jan 202255543681.844.54$47,400
Dec 202123239171.323.90$18,071
Nov 202146758377.435.24$39,213
Oct 20219101,30279.795.71$80,048
Sep 20217512,25369.865.35$64,520
Aug 20216802,19866.024.22$54,170
Jul 20216771,27670.783.98$52,999
Jun 202128877269.493.38$22,623
May 20215401,15063.483.02$37,750
Apr 202159457460.362.76$37,437
Mar 202135232761.302.72$22,466
Feb 202115716357.805.55$9,979
Jan 202134016,06950.412.81$62,298
Dec 202059019,34144.642.68$78,084
Nov 20204369438.772.71$17,158
Oct 202042946236.972.48$17,005
Sep 202063677637.091.99$25,134
Aug 202060390239.982.39$26,259
Jul 202059458638.371.83$23,861
Jun 20207051,24234.901.69$26,704
May 20206031,66316.921.81$13,221
Apr 202094070414.751.80$15,135
Mar 20202,04692930.341.86$63,800
Feb 20201,58879749.881.98$80,788
Jan 20201,1431,29557.252.09$68,149
Dec 20191,3451,51959.012.30$82,869
Nov 20191,3701,27355.302.75$79,263
Oct 20195801,02153.472.42$33,482
Sep 201964389055.052.66$37,762
Aug 20191,6012,72253.112.30$91,302
Jul 20191,5691,60156.272.46$92,226
Jun 20192,1311,67752.782.49$116,652
May 20191,7531,25358.482.74$105,949
Apr 20191,21973262.632.75$78,359
Mar 20191,14298956.803.06$67,894
Feb 20192,2431,52050.852.79$118,301
Jan 20192,1441,58146.033.23$103,792
Dec 20181,44389846.594.19$70,988
Nov 201869152452.934.24$38,795
Oct 201858493361.443.40$39,051
Sep 20181,3401,20859.543.11$83,538
Aug 20181,3371,40259.403.07$83,717
Jul 20181,5301,39265.142.93$103,745
Jun 20181,4841,04660.183.08$92,526
May 20182,11340265.382.90$139,314
Apr 20182,44264963.842.90$157,780
Mar 20182,43274461.222.79$150,960
Feb 20181,3752,98261.782.77$93,196
Jan 20181,7735,59462.874.01$133,897
Dec 20171,7829,44457.272.92$129,646
Nov 20171,35010,05655.423.12$106,175
Oct 20171,5809,00149.292.98$104,734
Sep 20172,93713,53247.523.09$181,343
Aug 20172,35210,03845.373.00$136,868
Jul 20171,7507,72843.873.09$100,631
Jun 20171,0264,00342.493.09$55,953
May 20171,0235,85845.373.26$65,531
Apr 20171,1366,41547.933.21$75,051
Mar 20171,5309,45646.772.98$99,772
Feb 20171,9128,46250.452.95$121,445
Jan 20171,95912,29849.413.42$138,839
Dec 20162,61919,24348.763.72$199,341
Nov 20163,0637,58642.492.64$150,207
Oct 20161,8756,98446.193.09$108,189
Sep 20161,7149,77041.553.10$101,510
Aug 20162,3268,82541.442.92$122,197
Jul 20161,6535,85341.622.92$85,914
Jun 20161,8827,01545.352.69$104,190
May 20163,62810,40342.521.99$174,975
Apr 20163,91111,30836.561.99$165,501
Mar 20164,32812,38833.011.79$165,091
Feb 20163,6829,83126.472.06$117,750
Jan 20164,57410,76927.352.36$150,561
Dec 20153,0148,39232.362.00$114,329
Nov 20153,0917,63738.792.17$136,452
Oct 20154,23110,26643.552.43$209,171
Sep 20154,98610,94142.992.76$244,528
Aug 20155,15811,50540.162.87$240,193
Jul 20155,23710,36548.152.95$282,687
Jun 20155,5239,84756.152.88$338,504
May 20156,64712,71255.212.96$404,551
Apr 20156,2458,41549.822.71$333,902
Mar 20154,7265,32142.892.93$218,314
Feb 20156,7087,65444.662.98$322,359
Jan 201510,5898,73643.433.10$486,967
Dec 201414,68315,62654.693.59$859,132
Nov 201411,91110,50870.464.25$883,927
Oct 20147,8747,25878.303.90$644,847
Sep 20144,6645,70586.164.05$424,929
Aug 20144,9266,81189.394.04$467,818
Jul 20141,8321,82896.564.18$184,538
Jun 20140098.164.74$0

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                   96 bbl  × $106.41 =    $10,215
Casinghead gas       366 Mcf  × $  3.05 =     $1,115

────────────────────────────────────────────────────
Month total                                  $11,330

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/45228 is the state's own key, not one this site invented.