MOBIL FEE

Name: MOBIL FEE lease production and value, Jan 1993 onwards
Creator: Railroad Commission of Texas
License: https://www.rrc.texas.gov/site-policies/

Operated by ORYX ENERGY COMPANY (P-5 627127) in the PEARSALL (AUSTIN CHALK) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 13098District 01Field 69981125OilCasinghead gasSave Export

Value, all time

$1.3 M

Jan 1993 – Aug 1997

Value, last 12 filed months

$46 k

at the published price for each month

Months reported

no gaps in the span

Streams

oil, casinghead gas

The PEARSALL (AUSTIN CHALK) 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 1,992 leases and 3,388 wells, and the rule below applies to all of them.

Discovered

1936-12-28

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 2025-06-17.

The Commission's schedule remark for this field reads: “LEASE PLAT. PRORATION PLAT IS NOT REQUIRED.”

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.

Stream	Basis	Volume	Value
Oil	Disposition	77,917 bbl	$1,296,658
Casinghead gas	Production	120,940 Mcf	$2,346
Total			$1,299,004

120,217 Mcf of this lease's gas, across 47 months, carries no value here. No free Texas wellhead gas price exists before 1997, so those months are left out of the total rather than valued at zero. The total above is therefore a floor, not an estimate.

Wells on this lease (6)

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 28.6071, -99.3518. A lease has no coordinate of its own — that point is the mean of its wells, and they span 2.6 miles.

28.61017, -99.35134 · centre of the wells drawn, derived⌘ or Ctrl + scroll to zoom

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

100.0%

6 of 6 wells

With a plug date

100.0%

6 of 6 wells

Median depth

10,417 ft

6 wells filed one

Completion to plug

4.7 years

median over 6 wells

What the state filed about each well

On the RRC proration schedule

6100.0%

A plug date is filed

6100.0%

BothOn the schedule and plugged. Neither fact cancels the other.

6100.0%

NeitherNo plug date, and not on the schedule.

00.0%

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

Between 7,400 and 11,381 ft, median 10,417 ft, over the 6 wells that filed a depth.

Completions filed

Nov 1978 – Apr 1994

6 of 6 wells

Plug dates filed

Jun 1995 – Jul 1997

6 of 6 wells

Last completion to plug: a median of 4.7 years across the 6 wells that filed both dates, with the middle half between 3.6 years and 5.7 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

6 wells


42-28331543	4	10,500 ft	Apr 1994	Jul 1997	Yes
42-28331532	3	10,333 ft	Aug 1993	Jan 1996	Yes
42-28331447	6	11,381 ft	Aug 1991	Jan 1996	Yes
42-28331444	5	10,696 ft	Jul 1991	Jun 1997	Yes
42-28331420	1	9,933 ft	Mar 1991	Jan 1996	Yes
42-28330641	2	7,400 ft	Nov 1978	Jun 1995	Yes

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 (56)

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

56 months


Aug 1997	0	0	17.86	2.55	$0
Jul 1997	0	0	17.58	2.25	$0
Jun 1997	0	0	17.24	2.26	$0
May 1997	0	0	18.97	2.31	$0
Apr 1997	0	0	17.88	2.08	$0
Mar 1997	163	5	18.95	1.94	$3,099
Feb 1997	213	154	20.49	2.21	$4,704
Jan 1997	329	564	23.48	3.54	$9,721
Dec 1996	140	418	23.32	—	$3,265
Nov 1996	436	699	21.97	—	$9,579
Oct 1996	287	809	23.31	—	$6,690
Sep 1996	388	636	22.22	—	$8,621
Aug 1996	192	808	20.26	—	$3,890
Jul 1996	672	854	19.55	—	$13,138
Jun 1996	494	755	18.73	—	$9,253
May 1996	750	1,182	19.43	—	$14,573
Apr 1996	632	1,281	21.51	—	$13,594
Mar 1996	761	1,661	19.38	—	$14,748
Feb 1996	564	1,486	16.98	—	$9,577
Jan 1996	606	1,309	17.07	—	$10,344
Dec 1995	842	1,852	17.19	—	$14,474
Nov 1995	820	1,806	16.00	—	$13,120
Oct 1995	762	1,914	15.43	—	$11,758
Sep 1995	642	2,403	16.18	—	$10,388
Aug 1995	660	1,820	15.92	—	$10,507
Jul 1995	589	1,947	15.24	—	$8,976
Jun 1995	689	1,714	16.41	—	$11,306
May 1995	563	1,560	17.56	—	$9,886
Apr 1995	418	1,369	17.73	—	$7,411
Mar 1995	471	1,654	16.44	—	$7,743
Feb 1995	472	1,430	16.58	—	$7,826
Jan 1995	620	1,451	15.92	—	$9,870
Dec 1994	482	1,767	15.03	—	$7,244
Nov 1994	460	1,840	15.90	—	$7,314
Oct 1994	510	1,863	15.58	—	$7,946
Sep 1994	3,099	5,227	15.29	—	$47,384
Aug 1994	4,240	7,324	16.13	—	$68,391
Jul 1994	6,513	7,077	17.56	—	$114,368
Jun 1994	10,356	7,778	17.09	—	$176,984
May 1994	12,381	6,406	15.88	—	$196,610
Apr 1994	3,377	2,308	14.14	—	$47,751
Mar 1994	811	2,496	12.46	—	$10,105
Feb 1994	1,081	2,590	12.50	—	$13,513
Jan 1994	0	0	12.66	—	$0
Dec 1993	379	692	12.33	—	$4,673
Nov 1993	858	1,887	14.49	—	$12,432
Oct 1993	2,052	3,118	15.85	—	$32,524
Sep 1993	1,063	2,102	15.03	—	$15,977
Aug 1993	1,489	3,724	15.66	—	$23,318
Jul 1993	1,347	3,363	15.46	—	$20,825
Jun 1993	1,913	3,793	16.79	—	$32,119
May 1993	2,566	5,229	17.68	—	$45,367
Apr 1993	2,609	6,367	18.05	—	$47,092
Mar 1993	2,052	4,583	18.14	—	$37,223
Feb 1993	2,372	3,843	17.90	—	$42,459
Jan 1993	1,732	2,022	16.93	—	$29,323

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.

Mar 1997 — as filed, then multipliedworked

Oil                  163 bbl  × $ 18.95 =     $3,089
Casinghead gas         5 Mcf  × $  1.94 =        $10

────────────────────────────────────────────────────
Month total                                   $3,099

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. 01/O/13098 is the state's own key, not one this site invented.