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BLALOCK C

Operated by XTO ENERGY INC. (P-5 945936) 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 40539District 08Field 85280300OilCasinghead gasSaveExport
Value, all time
$20.8 M
Oct 2010 – May 2026
Value, last 12 filed months
$169 k
at the published price for each month
Months reported
188
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
OilDisposition242,449 bbl$16,080,905
Casinghead gasProduction1,423,781 Mcf$4,739,568
Total$20,820,472

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 31.9293, -101.7173. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.3 miles.

31.92895, -101.71827 · 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
33.3%
1 of 3 wells
With a plug date
33.3%
1 of 3 wells
Median depth
10,905 ft
3 wells filed one
Completion to plug
6 months
median over 1 well

What the state filed about each well

On the RRC proration schedule
133.3%
A plug date is filed
133.3%
BothOn the schedule and plugged. Neither fact cancels the other.
133.3%
NeitherNo plug date, and not on the schedule.
266.7%

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

Between 9,445 and 10,965 ft, median 10,905 ft, over the 3 wells that filed a depth.

Completions filed
Jul 2012 – Apr 2025
3 of 3 wells
Plug dates filed
Oct 2025
1 of 3 wells; 2 filed none

Last completion to plug: a median of 6 months across the 1 well that filed both dates, with the middle half between 6 months and 6 months. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

3 wells

42-17335024121110,905 ftApr 2025Oct 2025Yes
42-17335091121210,965 ftMar 2022——
42-1733362512109,445 ftJul 2012——

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 (188)

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

188 months

May 20261751,209106.413.05$22,304
Apr 20261251,18898.932.87$15,775
Mar 20261191,35689.753.15$14,951
Feb 20262389063.503.75$4,798
Jan 2026162,41259.138.00$20,237
Dec 2025304,91556.664.41$23,391
Nov 2025581,69058.593.93$10,034
Oct 2025801,46559.383.30$9,592
Sep 202511579462.743.08$9,658
Aug 2025931,97063.933.01$11,885
Jul 2025681,91466.743.32$10,884
Jun 20251391,95466.483.13$15,354
May 20251212,10160.553.23$14,118
Apr 20251581,54762.363.54$15,334
Mar 20252201,75067.704.27$22,364
Feb 20255803,00270.884.34$54,142
Jan 20258654,16774.324.28$82,116
Dec 20248624,20368.993.12$72,589
Nov 20245583,78269.052.20$46,844
Oct 20243523,50771.372.28$33,123
Sep 20243614,34769.612.36$35,407
Aug 20242353,90875.632.06$25,838
Jul 20241695,19879.932.15$24,666
Jun 20241915,18778.082.63$28,576
May 20242123,26478.812.20$23,883
Apr 20241733,09984.451.66$19,752
Mar 20242993,78780.301.55$29,861
Feb 20242483,43676.091.78$24,999
Jan 20241892,77773.023.30$22,958
Dec 20234313,08971.262.61$38,778
Nov 20231416677.892.81$1,557
Oct 20233085.443.09$256
Sep 20230089.042.74$0
Aug 20230080.522.67$0
Jul 20239517874.852.64$7,581
Jun 20234361,20768.962.26$32,793
May 20233701,43770.622.23$29,330
Apr 202323927678.122.24$19,288
Mar 202358314472.852.39$42,816
Feb 20233411,35575.112.47$28,954
Jan 20231751,13476.533.39$17,234
Dec 2022065876.415.73$3,770
Nov 20220085.005.65$0
Oct 20229221,78187.185.86$90,823
Sep 20223611,23784.888.16$40,740
Aug 20220094.529.13$0
Jul 202200101.587.54$0
Jun 202200115.097.98$0
May 2022541841109.378.43$66,261
Apr 20229191,365104.226.84$105,112
Mar 20220743108.885.08$3,772
Feb 202237770891.054.86$37,766
Jan 202218543481.844.54$17,110
Dec 2021043471.323.90$1,692
Nov 2021042977.435.24$2,247
Oct 2021043479.795.71$2,480
Sep 202116763369.865.35$15,054
Aug 20217042,98966.024.22$59,093
Jul 20217313,10370.783.98$64,097
Jun 20219131,93769.493.38$69,993
May 20213512,84263.483.02$30,858
Apr 20218953,81960.362.76$64,557
Mar 20211,2364,86061.302.72$88,971
Feb 20215263,85857.805.55$51,807
Jan 20211,4334,99350.412.81$86,269
Dec 20201712,20944.642.68$13,544
Nov 20209103,62238.772.71$45,084
Oct 20208624,17236.972.48$42,208
Sep 20205252,23837.091.99$23,928
Aug 20205211,54439.982.39$24,512
Jul 20208822,01038.371.83$37,511
Jun 20201,1285,92834.901.69$49,387
May 20209436,08616.921.81$27,000
Apr 20201,3279,88514.751.80$37,410
Mar 20201,98211,85830.341.86$82,145
Feb 20201,88011,25749.881.98$116,071
Jan 20202,06811,83257.252.09$143,178
Dec 20191,89612,36959.012.30$140,386
Nov 20191,87411,61555.302.75$135,582
Oct 20192,44912,66053.472.42$161,567
Sep 20191,6909,21855.052.66$117,529
Aug 20199116,86353.112.30$64,198
Jul 20191,51210,23156.272.46$110,249
Jun 20191,82210,31252.782.49$121,854
May 20191,72411,60258.482.74$132,613
Apr 20192,05111,22262.632.75$159,322
Mar 20197567,21856.803.06$65,043
Feb 20191,4348,88950.852.79$97,739
Jan 20191,79710,49546.033.23$116,596
Dec 20181,26811,68646.594.19$107,987
Nov 20182,34811,27052.934.24$172,033
Oct 20181,23911,54661.443.40$115,358
Sep 20181,41511,89459.543.11$121,216
Aug 20181,43712,24359.403.07$122,902
Jul 20181,40110,41965.142.93$121,808
Jun 20181,3959,59060.183.08$113,459
May 20181,39111,30965.382.90$123,749
Apr 20181,40510,89963.842.90$121,311
Mar 20182,27411,17661.222.79$170,360
Feb 20181,58311,62061.782.77$129,940
Jan 20181,25011,24362.874.01$123,664
Dec 20171,96713,24757.272.92$151,351
Nov 20172,12613,80355.423.12$160,866
Oct 20171,57913,94949.292.98$119,448
Sep 20172,28114,45347.523.09$153,014
Aug 20172,06715,19845.373.00$139,441
Jul 20171,56015,41043.873.09$116,012
Jun 20172,26214,29042.493.09$140,230
May 20171,93415,00645.373.26$136,716
Apr 20171,93615,79647.933.21$143,523
Mar 20172,30314,03646.772.98$149,590
Feb 20171,95813,96050.452.95$139,999
Jan 20172,31415,61149.413.42$167,706
Dec 20162,64115,78948.763.72$187,555
Nov 20161,84515,63142.492.64$119,728
Oct 20162,23016,12746.193.09$152,840
Sep 20162,22015,96641.553.10$141,746
Aug 20162,38915,82741.442.92$145,284
Jul 20161,62910,60541.622.92$98,812
Jun 20162,19413,38545.352.69$135,448
May 20162,36614,38542.521.99$129,243
Apr 20162,43214,87636.561.99$118,533
Mar 20162,56816,12033.011.79$113,689
Feb 20162,23514,79626.472.06$89,694
Jan 20162,81913,29427.352.36$108,531
Dec 20152,67716,01532.362.00$118,680
Nov 20152,41916,13638.792.17$128,805
Oct 20153,20116,91543.552.43$180,449
Sep 20151,8798,14742.992.76$103,251
Aug 20151,4678,37540.162.87$82,972
Jul 20152,89113,14348.152.95$177,909
Jun 20153,41119,82356.152.88$248,675
May 20151,1216,91055.212.96$82,313
Apr 20152,53511,96649.822.71$158,681
Mar 20151,3519,81842.892.93$86,757
Feb 20152,33310,96944.662.98$136,838
Jan 20152,43912,40143.433.10$144,377
Dec 20141,88612,98654.693.59$149,783
Nov 20142,14818,71670.464.25$230,926
Oct 20143,17424,54778.303.90$344,281
Sep 20143,41820,55386.164.05$377,641
Aug 20142,43916,69289.394.04$285,376
Jul 20142,48218,31996.564.18$316,228
Jun 20143,68720,86098.164.74$460,727
May 20143,69225,04494.734.73$468,115
Apr 20144,08222,98895.944.81$502,179
Mar 20144,96325,54095.895.06$605,053
Feb 20145,09923,98297.406.19$645,139
Jan 20143,63816,05790.404.86$406,924
Dec 20133,04315,17791.824.35$345,496
Nov 20133,19016,77888.853.74$346,152
Oct 20133,81617,66597.423.78$438,517
Sep 20134,54820,045104.113.72$548,014
Aug 20134,05920,390104.253.52$494,977
Jul 20135,05421,907102.523.72$599,581
Jun 20133,18718,02494.403.93$371,749
May 20132,82016,28794.834.15$334,997
Apr 20132091,24593.964.28$24,969
Mar 201320782493.623.91$22,604
Feb 201319136691.233.42$18,677
Jan 201315416291.603.42$14,660
Dec 201215842986.773.42$15,177
Nov 201232049886.953.62$29,629
Oct 20121,11351589.383.40$101,231
Sep 20121,76134994.672.92$167,732
Aug 201221214692.662.91$20,069
Jul 20123387685.133.02$29,004
Jun 2012023979.822.52$602
May 20121705391.612.49$15,706
Apr 2012321325101.652.00$33,279
Mar 2012218105.052.22$250
Feb 2012513219101.102.57$52,427
Jan 201251628498.092.73$51,391
Dec 2011236996.873.24$1,389
Nov 201134476995.723.31$35,474
Oct 20113551,21184.983.65$34,586
Sep 20113591,75783.623.99$37,023
Aug 20111692,43183.404.15$24,182
Jul 20115182,71594.144.52$61,029
Jun 20113512,98592.904.64$46,458
May 20113425,54298.134.40$57,972
Apr 20113538,507105.964.33$74,267
Mar 20111,0487,40496.364.06$131,026
Feb 20111,0786,12385.644.18$117,914
Jan 20112,15011,86186.504.59$240,403
Dec 20103,1487,13085.734.35$300,878
Nov 20104,0494,77880.843.80$345,455
Oct 20106911,58378.103.51$59,522

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                  175 bbl  × $106.41 =    $18,622
Casinghead gas     1,209 Mcf  × $  3.05 =     $3,682

────────────────────────────────────────────────────
Month total                                  $22,304

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/40539 is the state's own key, not one this site invented.