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LEE HEFLEY

Operated by MMGL TXPH, LLC (P-5 101619) 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 9378District 10Field 61691235OilCasinghead gasSaveExport
Value, all time
$11.9 M
Oct 2014 – May 2026
Value, last 12 filed months
$293 k
at the published price for each month
Months reported
140
no gaps in the span
Streams
2
oil, casinghead gas

The MILLS RANCH (GRANITE WASH CONS.) 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 274 leases and 400 wells, and the rule below applies to all of them.

Discovered
2010-02-23
as the register files it
Field class
Oil and gas
the register's own label
Between wells
0 ft
minimum
From a lease line
467 ft
minimum

A drilling unit in this field needs at least 20 acres. The field rule took effect on 2013-07-09.

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
OilDisposition179,593 bbl$9,475,784
Casinghead gasProduction765,771 Mcf$2,381,300
Total$11,857,084

Wells on this lease (1)

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 35.5752, -100.3055. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.0 miles.

35.57518, -100.30552 · 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 1 wells
With a plug date
0.0%
0 of 1 wells
Median depth
9,894 ft
1 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.
1100.0%

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

The one well that filed a depth was drilled to 9,894 ft.

Completions filed
Oct 2014
1 of 1 wells

1 well

42-483338594H9,894 ftOct 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 (140)

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

140 months

May 20261741,987106.413.05$24,567
Apr 20261832,16198.932.87$24,306
Mar 20261732,03489.753.15$21,933
Feb 20263592,16763.503.75$30,923
Jan 20261752,02659.138.00$26,552
Dec 20253422,24756.664.41$29,295
Nov 202522,11158.593.93$8,406
Oct 20253462,35859.383.30$28,338
Sep 20251752,17762.743.08$17,678
Aug 20251822,51563.933.01$19,217
Jul 20255182,32166.743.32$42,266
Jun 20251722,49166.483.13$19,228
May 20253602,58360.553.23$30,147
Apr 20251812,58062.363.54$20,428
Mar 20253592,70867.704.27$35,863
Feb 20253312,45870.884.34$34,131
Jan 20251742,38674.324.28$23,141
Dec 20243442,59268.993.12$31,823
Nov 20243302,47469.052.20$28,225
Oct 20241712,86571.372.28$18,740
Sep 20241692,26969.612.36$17,129
Aug 20243362,68275.632.06$30,946
Jul 20241622,69079.932.15$18,723
Jun 20241712,48178.082.63$19,887
May 20243432,61978.812.20$32,790
Apr 20243392,28784.451.66$32,423
Mar 20241732,57180.301.55$17,864
Feb 20243382,18676.091.78$29,617
Jan 20241762,55973.023.30$21,290
Dec 20233502,72571.262.61$32,055
Nov 20233332,89577.892.81$34,065
Oct 20234822,99285.443.09$50,419
Sep 20233472,99589.042.74$39,088
Aug 20233493,25980.522.67$36,812
Jul 20233663,06074.852.64$35,479
Jun 20235213,16868.962.26$43,083
May 20233512,80070.622.23$31,024
Apr 202316562078.122.24$14,277
Mar 20233352,10972.852.39$29,452
Feb 20233442,08175.112.47$30,969
Jan 20235392,67076.533.39$50,295
Dec 20223273,03376.415.73$42,362
Nov 20223162,69785.005.65$42,088
Oct 20223302,82787.185.86$45,346
Sep 20223292,38184.888.16$47,363
Aug 20221552,19394.529.13$34,666
Jul 20225103,290101.587.54$76,619
Jun 20221823,212115.097.98$46,569
May 20225113,443109.378.43$84,923
Apr 20223413,399104.226.84$58,780
Mar 20223803,724108.885.08$60,279
Feb 20225073,30391.054.86$62,211
Jan 20223623,92681.844.54$47,441
Dec 20215383,87771.323.90$53,487
Nov 20213473,93777.435.24$47,486
Oct 20215294,28779.795.71$66,704
Sep 20215134,13869.865.35$57,980
Aug 20215204,23366.024.22$52,196
Jul 20215143,88370.783.98$51,843
Jun 20215193,51269.493.38$47,938
May 20217154,19063.483.02$58,032
Apr 20218845,09060.362.76$67,399
Mar 2021161361.302.72$1,727
Feb 2021145957.805.55$2,604
Jan 2021285050.412.81$2,490
Dec 20205393,90844.642.68$34,517
Nov 20205564,20138.772.71$32,926
Oct 20205243,94136.972.48$29,140
Sep 20205254,18737.091.99$27,809
Aug 20205254,31139.982.39$31,272
Jul 20206914,14038.371.83$34,070
Jun 20205264,09834.901.69$25,284
May 20205324,62616.921.81$17,396
Apr 20205245,02914.751.80$16,803
Mar 20208734,61130.341.86$35,046
Feb 20206923,94249.881.98$42,325
Jan 20205234,35457.252.09$39,062
Dec 20199235,23659.012.30$66,532
Nov 20198855,08855.302.75$62,936
Oct 20197274,33353.472.42$49,352
Sep 20195284,52855.052.66$41,099
Aug 20193363,90153.112.30$26,834
Jul 20198516,19356.272.46$63,121
Jun 20198496,06252.782.49$59,912
May 20195176,74958.482.74$48,729
Apr 20191,2466,86062.632.75$96,907
Mar 20191,0837,10456.803.06$83,268
Feb 20191,1036,79550.852.79$75,061
Jan 20191,0007,85246.033.23$71,378
Dec 20189119,37446.594.19$81,678
Nov 20181,4667,59452.934.24$109,773
Oct 20189117,11761.443.40$80,156
Sep 20181,0906,42559.543.11$84,868
Aug 20181,2846,00059.403.07$94,669
Jul 20181,2755,64765.142.93$99,610
Jun 20181,1014,84960.183.08$81,178
May 20189035,70265.382.90$75,579
Apr 20181,2894,88663.842.90$96,463
Mar 20181,0814,57761.222.79$78,934
Feb 20189314,30961.782.77$69,436
Jan 20181,1014,75662.874.01$88,288
Dec 20171,3164,89857.272.92$89,677
Nov 20171,1464,99955.423.12$79,100
Oct 20171,0855,28949.292.98$69,260
Sep 20175362,44647.523.09$33,022
Aug 20179075,97645.373.00$59,105
Jul 20171,4136,65143.873.09$82,522
Jun 20171,0697,00742.493.09$67,054
May 20171,4468,15845.373.26$92,228
Apr 20171,4828,92047.933.21$99,680
Mar 20171,4659,85146.772.98$97,910
Feb 20171,5279,31250.452.95$104,532
Jan 20171,84112,87149.413.42$134,967
Dec 20161,69413,66048.763.72$133,453
Nov 20162,17211,38942.492.64$122,405
Oct 20161,6749,88746.193.09$107,875
Sep 20161,9768,60241.553.10$108,774
Aug 20162,19210,23841.442.92$120,776
Jul 20162,47110,02741.622.92$132,165
Jun 20162,4547,79845.352.69$132,233
May 20162,1847,34642.521.99$107,490
Apr 20162,3476,66036.561.99$99,067
Mar 20162,28617,90133.011.79$107,575
Feb 20162,36430,90626.472.06$126,354
Jan 20162,4486,28827.352.36$81,820
Dec 20152,8428,41132.362.00$108,801
Nov 20153,16610,06138.792.17$144,615
Oct 20152,94310,71343.552.43$154,164
Sep 20153,66317,20842.992.76$204,939
Aug 20154,08112,10040.162.87$198,650
Jul 20154,68411,72848.152.95$260,075
Jun 20154,12111,03256.152.88$263,198
May 20155,46610,84955.212.96$333,842
Apr 20154,94720,28149.822.71$301,351
Mar 20155,75211,62042.892.93$280,805
Feb 20156,90797044.662.98$311,354
Jan 20158,1472,41543.433.10$361,312
Dec 201412,59110,07254.693.59$724,774
Nov 201417,29428,05670.464.25$1,337,825
Oct 201402,43478.303.90$9,495

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                  174 bbl  × $106.41 =    $18,515
Casinghead gas     1,987 Mcf  × $  3.05 =     $6,052

────────────────────────────────────────────────────
Month total                                  $24,567

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/9378 is the state's own key, not one this site invented.