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MARY 18-7A-AZ

Operated by PIONEER NATURAL RES. USA, INC. (P-5 665748) in the SPRABERRY (TREND AREA) R 40 EXC field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 19484District 7CField 85279201OilCasinghead gasSaveExport
Value, all time
$47.1 M
Dec 2016 – May 2026
Value, last 12 filed months
$2.7 M
at the published price for each month
Months reported
114
no gaps in the span
Streams
2
oil, casinghead gas

The SPRABERRY (TREND AREA) R 40 EXC 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 721 leases and 1,413 wells, and the rule below applies to all of them.

Discovered
2013-12-18
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 2024-02-01.

The Commission's schedule remark for this field reads: “ALLOCATION FORMULA EFFECTIVE 02/01/2024.”

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
OilDisposition686,775 bbl$40,830,015
Casinghead gasProduction1,913,588 Mcf$6,260,534
Total$47,090,549

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 31.6190, -102.0304. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.0 miles.

31.61897, -102.03036 · 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
9,395 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 9,395 ft.

Completions filed
Dec 2016
1 of 1 wells

1 well

42-461403154202H9,395 ftDec 2016——

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 (114)

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

114 months

May 20261,98412,430106.413.05$248,977
Apr 20262,37212,30098.932.87$269,960
Mar 20262,97811,49689.753.15$303,481
Feb 20262,7299,68663.503.75$209,617
Jan 20262,47410,13859.138.00$227,371
Dec 20252,55111,58056.664.41$195,646
Nov 20252,6848,81658.593.93$191,871
Oct 20253,25213,06959.383.30$236,295
Sep 20252,12511,90162.743.08$169,941
Aug 20252,52412,79563.933.01$199,933
Jul 20252,51711,91266.743.32$207,475
Jun 20252,47112,78266.483.13$204,263
May 20253,05911,15460.553.23$221,276
Apr 20252,6928,74562.363.54$198,858
Mar 20252,7889,72267.704.27$230,244
Feb 20252,6399,08470.884.34$226,485
Jan 20252,8299,41374.324.28$250,526
Dec 20243,0029,73568.993.12$237,495
Nov 20242,7669,84269.052.20$212,629
Oct 20242,78211,03871.372.28$223,733
Sep 20243,47819,79369.612.36$288,901
Aug 20242,15913,50475.632.06$191,152
Jul 20243,09321,31279.932.15$292,972
Jun 20243,15218,21778.082.63$294,091
May 20243,31419,80778.812.20$304,721
Apr 20243,73721,89584.451.66$351,918
Mar 20243,58620,04280.301.55$318,923
Feb 20241,9397,49276.091.78$160,902
Jan 20242,92214,48073.023.30$261,115
Dec 20233,77519,69971.262.61$320,435
Nov 20233,43622,65177.892.81$331,224
Oct 20233,79728,98285.443.09$413,891
Sep 20233,45130,29989.042.74$390,146
Aug 20233,82837,20780.522.67$407,680
Jul 20233,94436,05674.852.64$390,461
Jun 20233,72035,53868.962.26$336,793
May 20234,01237,51570.622.23$366,888
Apr 20233,93438,59978.122.24$393,699
Mar 20234,67035,42572.852.39$424,987
Feb 20234,81618,07975.112.47$406,307
Jan 20234,53615,99176.533.39$401,313
Dec 20224,54313,56676.415.73$424,851
Nov 20224,29611,96685.005.65$432,722
Oct 20224,04713,28687.185.86$430,723
Sep 20224,56522,85984.888.16$574,091
Aug 20224,80523,00094.529.13$664,093
Jul 20224,32214,461101.587.54$548,095
Jun 20223,70012,177115.097.98$522,971
May 20224,0139,761109.378.43$521,217
Apr 20224,2529,866104.226.84$510,603
Mar 20224,79810,368108.885.08$575,038
Feb 20223,9127,66291.054.86$393,416
Jan 20223,9367,13381.844.54$354,490
Dec 20213,9407,52771.323.90$310,349
Nov 20214,87910,07277.435.24$430,527
Oct 20214,8659,08779.795.71$440,100
Sep 20214,3999,12369.865.35$356,131
Aug 20214,3159,19766.024.22$323,693
Jul 20214,9929,48270.783.98$391,092
Jun 20213,7666,66369.493.38$284,224
May 20213,2343,63663.483.02$216,267
Apr 20212,8512,35960.362.76$178,593
Mar 20211,8641,33461.302.72$117,888
Feb 202176830157.805.55$46,060
Jan 20211,19477750.412.81$62,373
Dec 20208895,36644.642.68$54,041
Nov 20202,0066,33938.772.71$94,930
Oct 20201,2735,50536.972.48$60,707
Sep 20204035,09937.091.99$25,100
Aug 20202,8615,85439.982.39$128,345
Jul 20205,46212,06138.371.83$231,590
Jun 20205,42610,93934.901.69$207,858
May 20205,72011,92216.921.81$118,418
Apr 20205,98112,32514.751.80$110,459
Mar 20206,41218,59430.341.86$229,055
Feb 20205,34714,51849.881.98$295,464
Jan 20206,2707,96557.252.09$375,642
Dec 20197,1889,43059.012.30$445,894
Nov 20194,8062,64955.302.75$273,058
Oct 201944715153.472.42$24,266
Sep 2019323355.052.66$1,849
Aug 20191516053.112.30$8,158
Jul 20196,06826,08756.272.46$405,622
Jun 20196,53030,77452.782.49$421,318
May 20196,82536,99758.482.74$500,510
Apr 20197,27437,31562.632.75$558,213
Mar 20197,79027,92656.803.06$527,984
Feb 20194,97910,58250.852.79$282,729
Jan 20197,52616,03546.033.23$398,186
Dec 20187,36720,37846.594.19$428,519
Nov 20188,12824,65552.934.24$534,684
Oct 20187,79429,58661.443.40$579,399
Sep 20188,76737,77759.543.11$639,398
Aug 201810,43033,91759.403.07$723,551
Jul 20187,78510,48765.142.93$537,862
Jun 20188,08819,97960.183.08$548,210
May 201810,94342,11065.382.90$837,606
Apr 201811,36035,28363.842.90$827,571
Mar 20189,26314,49661.222.79$607,479
Feb 201810,06923,49761.782.77$687,058
Jan 201811,48121,10662.874.01$806,431
Dec 201712,34525,38857.272.92$781,170
Nov 201712,11122,86155.423.12$742,480
Oct 201713,70736,82749.292.98$785,498
Sep 201712,70624,13947.523.09$678,313
Aug 201715,73828,78345.373.00$800,509
Jul 201717,23031,09143.873.09$851,867
Jun 201717,57023,49642.493.09$819,088
May 201719,53917,49545.373.26$943,578
Apr 201721,67123,68947.933.21$1,114,771
Mar 201724,09622,96646.772.98$1,195,493
Feb 201724,88923,77550.452.95$1,325,848
Jan 201734,60333,71549.413.42$1,824,999
Dec 201620,65615,68248.763.72$1,065,568

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                1,984 bbl  × $106.41 =   $211,117
Casinghead gas    12,430 Mcf  × $  3.05 =    $37,860

────────────────────────────────────────────────────
Month total                                 $248,977

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/19484 is the state's own key, not one this site invented.