COLTHARP

Operated by SANGUINE GAS EXPLORATION, LLC (P-5 748059) in the MILLS RANCH (GRANITE WASH CONS.) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 8676District 10Field 61691235OilCasinghead gasSave
Value, all time
$27.7 M
Dec 2011 – May 2026
Value, last 12 filed months
$123 k
at the published price for each month
Months reported
174
no gaps in the span
Streams
2
oil, casinghead gas

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
OilDisposition266,109 bbl$22,836,919
Casinghead gasProduction1,332,159 Mcf$4,888,413
Total$27,725,331

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 35.3888, -100.0619. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.3 miles.

35.38933, -100.06266 · 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
10,468 ft
3 wells filed one
Completion to plug
10.5 years
median over 1 wells

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 10,380 and 11,201 ft, median 10,468 ft, over the 3 wells that filed a depth.

Completions filed
Dec 2011 – Feb 2013
3 of 3 wells
Plug dates filed
Aug 2023
1 of 3 wells; 2 filed none

Last completion to plug: a median of 10.5 years across the 1 well that filed both dates, with the middle half between 10.5 years and 10.5 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

3 wells

42-483335974058H11,201 ftFeb 2013Aug 2023Yes
42-483334383058H10,468 ftOct 2012
42-483333002058H10,380 ftDec 2011

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 (174)

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

174 months

May 20261861,451106.413.05$24,212
Apr 202601,43998.932.87$4,130
Mar 202601,58689.753.15$4,995
Feb 202601,66563.503.75$6,244
Jan 202601,42759.138.00$11,413
Dec 20251741,68456.664.41$17,291
Nov 202501,41958.593.93$5,572
Oct 20251751,90359.383.30$16,681
Sep 202501,71862.743.08$5,286
Aug 202501,69163.933.01$5,098
Jul 2025962,46066.743.32$14,562
Jun 202502,39966.483.13$7,506
May 20253681,46460.553.23$27,015
Apr 202501,43162.363.54$5,070
Mar 202501,52067.704.27$6,488
Feb 202501,22070.884.34$5,296
Jan 20251721,59574.324.28$19,608
Dec 202401,86268.993.12$5,812
Nov 20241831,94169.052.20$16,903
Oct 202402,11271.372.28$4,818
Sep 202402,17669.612.36$5,145
Aug 20241882,44175.632.06$19,256
Jul 202402,12979.932.15$4,570
Jun 20241822,51378.082.63$20,830
May 202402,73378.812.20$6,008
Apr 202402,79784.451.66$4,641
Mar 20243922,83280.301.55$35,853
Feb 202402,78776.091.78$4,971
Jan 20241903,02773.023.30$23,856
Dec 202303,21471.262.61$8,391
Nov 20233933,14277.892.81$39,432
Oct 202303,34685.443.09$10,330
Sep 20231923,32989.042.74$26,201
Aug 20231893,53780.522.67$24,672
Jul 20231903,62474.852.64$23,795
Jun 202303,70868.962.26$8,374
May 20233743,69670.622.23$34,644
Apr 20231923,57578.122.24$22,999
Mar 202303,79672.852.39$9,084
Feb 20233913,94075.112.47$39,083
Jan 202303,80076.533.39$12,873
Dec 20223713,93676.415.73$50,898
Nov 20221994,46685.005.65$42,131
Oct 20221803,65987.185.86$37,148
Sep 20221863,72584.888.16$46,197
Aug 20221885,06094.529.13$63,953
Jul 20223764,070101.587.54$68,890
Jun 20221884,106115.097.98$54,391
May 20221783,292109.378.43$47,229
Apr 20221773,704104.226.84$43,773
Mar 20223834,600108.885.08$65,052
Feb 20221882,54191.054.86$29,464
Jan 202204,50081.844.54$20,420
Dec 20213734,42871.323.90$43,868
Nov 20211824,24677.435.24$36,328
Oct 20213814,42079.795.71$55,655
Sep 20211843,87669.865.35$33,594
Aug 20211943,05866.024.22$25,714
Jul 20211853,73370.783.98$27,959
Jun 202103,73369.493.38$12,620
May 20211895,01263.483.02$27,122
Apr 20213815,59960.362.76$38,442
Mar 20213705,78761.302.72$38,404
Feb 202104,91457.805.55$27,263
Jan 20213816,49550.412.81$37,459
Dec 20201936,92644.642.68$27,146
Nov 20205675,91338.772.71$37,987
Oct 20203695,89736.972.48$28,257
Sep 20205566,06937.091.99$32,706
Aug 20205485,76239.982.39$35,652
Jul 20203846,00838.371.83$25,699
Jun 202006,16034.901.69$10,412
May 202006,24816.921.81$11,339
Apr 20201886,18814.751.80$13,939
Mar 20205666,34530.341.86$28,950
Feb 20203715,57449.881.98$29,546
Jan 20205566,21957.252.09$44,858
Dec 20193756,02959.012.30$36,022
Nov 20195456,28155.302.75$47,416
Oct 20193786,69453.472.42$36,401
Sep 20197444,72055.052.66$53,500
Aug 20191893,63453.112.30$18,412
Jul 20193774,24356.272.46$31,652
Jun 20193794,58852.782.49$31,433
May 20195684,52858.482.74$45,625
Apr 20193563,95362.632.75$33,170
Mar 20193762,00756.803.06$27,502
Feb 20193782,13650.852.79$25,185
Jan 20193792,11846.033.23$24,283
Dec 20183882,32946.594.19$27,825
Nov 20183842,21652.934.24$29,715
Oct 20183812,35661.443.40$31,415
Sep 20183802,11059.543.11$29,183
Aug 20183762,50259.403.07$30,007
Jul 20187452,46765.142.93$55,762
Jun 20181912,26760.183.08$18,470
May 20187622,58965.382.90$57,330
Apr 20183792,11763.842.90$30,336
Mar 20187711,77561.222.79$52,147
Feb 20181922,22961.782.77$18,027
Jan 20189512,83762.874.01$71,164
Dec 20177583,17557.272.92$52,686
Nov 20171922,94355.423.12$19,818
Oct 20177412,81149.292.98$44,911
Sep 20179383,28147.523.09$54,703
Aug 20175683,42545.373.00$36,060
Jul 20171,3163,78743.873.09$69,424
Jun 20173772,21842.493.09$22,866
May 201701,98645.373.26$6,481
Apr 201702,07947.933.21$6,677
Mar 201702,12146.772.98$6,328
Feb 201701,53750.452.95$4,538
Jan 20171781,72349.413.42$14,686
Dec 201601,84548.763.72$6,869
Nov 201601,34742.492.64$3,562
Oct 20165272,58046.193.09$32,315
Sep 20163652,58141.553.10$23,168
Aug 20165502,04341.442.92$28,766
Jul 20169432,80841.622.92$47,459
Jun 20163792,95145.352.69$25,114
May 20161,3072,54142.521.99$60,633
Apr 20163731,97036.561.99$17,559
Mar 20169432,57433.011.79$35,746
Feb 20167662,57426.472.06$25,588
Jan 20169342,10827.352.36$30,529
Dec 20153902,27232.362.00$17,168
Nov 20153902,37538.792.17$20,276
Oct 20159612,76143.552.43$48,551
Sep 20157543,09442.992.76$40,949
Aug 20151,3423,50840.162.87$63,971
Jul 20159603,94348.152.95$57,836
Jun 20151,3414,30956.152.88$87,719
May 20151,0114,69155.212.96$69,681
Apr 20152,69510,45049.822.71$162,549
Mar 20152,09911,50542.892.93$123,790
Feb 20151,93316,32344.662.98$134,908
Jan 20151,37418,16243.433.10$115,986
Dec 20142,92120,60254.693.59$233,739
Nov 20141,74711,20670.464.25$170,740
Oct 20143,47813,14678.303.90$323,609
Sep 20141,73716,14186.164.05$214,957
Aug 20143,07213,79689.394.04$330,275
Jul 20143,43812,61696.564.18$384,703
Jun 20142,66612,97898.164.74$323,170
May 20143,40612,57294.734.73$382,073
Apr 20144,21317,09195.944.81$486,388
Mar 20143,30527,48895.895.06$455,918
Feb 20143,55620,64597.406.19$474,188
Jan 20145,57236,68090.404.86$682,000
Dec 20135,32640,20991.824.35$664,123
Nov 20134,82642,53888.853.74$587,809
Oct 20135,92144,14197.423.78$743,649
Sep 20136,12741,452104.113.72$791,990
Aug 20137,21143,647104.253.52$905,498
Jul 20138,19344,017102.523.72$1,003,590
Jun 20138,98744,50394.403.93$1,023,421
May 201311,34251,85194.834.15$1,290,696
Apr 201313,50651,90893.964.28$1,491,324
Mar 201317,92460,34793.623.91$1,914,175
Feb 20139,30627,40691.233.42$942,712
Jan 20134,71210,91891.603.42$468,958
Dec 20127,17216,23786.773.42$677,848
Nov 20123,03310,19386.953.62$300,669
Oct 20121,8134,76389.383.40$178,239
Sep 20123,5799,36994.672.92$366,166
Aug 20123,17910,51292.662.91$325,137
Jul 20124,7697,80885.133.02$429,571
Jun 20124,4949,74479.822.52$383,257
May 20124,6308,41891.612.49$445,101
Apr 20125,3567,700101.652.00$559,813
Mar 20122,3803,838105.052.22$258,547
Feb 201210,90114,035101.102.57$1,138,164
Jan 201211,76811,87698.092.73$1,186,793
Dec 20118,2352,24496.873.24$804,994

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                  186 bbl  × $106.41 =    $19,792
Casinghead gas     1,451 Mcf  × $  3.05 =     $4,420

────────────────────────────────────────────────────
Month total                                  $24,212

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. 10/O/8676 is the state's own key, not one this site invented.