W. F. HAYDEN ET AL UNIT

Name: W. F. HAYDEN ET AL UNIT 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 13169District 01Field 69981125OilCasinghead gasSave Export

Value, all time

$417 k

Jan 1993 – Sep 1997

Value, last 12 filed months

$6 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	24,833 bbl	$416,656
Casinghead gas	Production	33,965 Mcf	$0
Total			$416,656

33,965 Mcf of this lease's gas, across 44 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 (2)

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 28.6084, -99.5605. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.5 miles.

28.60834, -99.56047 · 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%

2 of 2 wells

With a plug date

100.0%

2 of 2 wells

Median depth

9,469 ft

2 wells filed one

Completion to plug

5.9 years

median over 2 wells

What the state filed about each well

On the RRC proration schedule

2100.0%

A plug date is filed

2100.0%

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

2100.0%

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 8,971 and 9,967 ft, median 9,469 ft, over the 2 wells that filed a depth.

Completions filed

Apr 1991 – Feb 1992

2 of 2 wells

Plug dates filed

Aug 1997

2 of 2 wells

Last completion to plug: a median of 5.9 years across the 2 wells that filed both dates, with the middle half between 5.8 years and 6.2 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

2 wells


42-12733035	2	9,967 ft	Feb 1992	Aug 1997	Yes
42-12732992	1	8,971 ft	Apr 1991	Aug 1997	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 (57)

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

57 months


Sep 1997	0	0	17.74	2.95	$0
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	101	0	17.88	2.08	$1,806
Mar 1997	57	0	18.95	1.94	$1,080
Feb 1997	0	0	20.49	2.21	$0
Jan 1997	0	0	23.48	3.54	$0
Dec 1996	0	0	23.32	—	$0
Nov 1996	0	0	21.97	—	$0
Oct 1996	140	0	23.31	—	$3,263
Sep 1996	15	0	22.22	—	$333
Aug 1996	5	1	20.26	—	$101
Jul 1996	75	1	19.55	—	$1,466
Jun 1996	196	60	18.73	—	$3,671
May 1996	298	163	19.43	—	$5,790
Apr 1996	407	111	21.51	—	$8,755
Mar 1996	748	88	19.38	—	$14,496
Feb 1996	1,157	484	16.98	—	$19,646
Jan 1996	742	321	17.07	—	$12,666
Dec 1995	673	686	17.19	—	$11,569
Nov 1995	209	90	16.00	—	$3,344
Oct 1995	239	107	15.43	—	$3,688
Sep 1995	203	126	16.18	—	$3,285
Aug 1995	368	333	15.92	—	$5,859
Jul 1995	482	752	15.24	—	$7,346
Jun 1995	362	900	16.41	—	$5,940
May 1995	404	800	17.56	—	$7,094
Apr 1995	516	1,066	17.73	—	$9,149
Mar 1995	831	1,966	16.44	—	$13,662
Feb 1995	1,182	1,002	16.58	—	$19,598
Jan 1995	446	1,117	15.92	—	$7,100
Dec 1994	460	1,079	15.03	—	$6,914
Nov 1994	556	1,352	15.90	—	$8,840
Oct 1994	617	2,143	15.58	—	$9,613
Sep 1994	478	2,270	15.29	—	$7,309
Aug 1994	869	3,551	16.13	—	$14,017
Jul 1994	1,389	1,210	17.56	—	$24,391
Jun 1994	931	1,565	17.09	—	$15,911
May 1994	440	91	15.88	—	$6,987
Apr 1994	0	45	14.14	—	$0
Mar 1994	3	72	12.46	—	$37
Feb 1994	1	1	12.50	—	$13
Jan 1994	1	46	12.66	—	$13
Dec 1993	39	323	12.33	—	$481
Nov 1993	631	685	14.49	—	$9,143
Oct 1993	1,360	3,474	15.85	—	$21,556
Sep 1993	785	672	15.03	—	$11,799
Aug 1993	677	538	15.66	—	$10,602
Jul 1993	885	601	15.46	—	$13,682
Jun 1993	1,375	1,013	16.79	—	$23,086
May 1993	534	254	17.68	—	$9,441
Apr 1993	712	546	18.05	—	$12,852
Mar 1993	717	618	18.14	—	$13,006
Feb 1993	593	761	17.90	—	$10,615
Jan 1993	924	881	16.93	—	$15,643

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.

Apr 1997 — as filed, then multipliedworked

Oil                  101 bbl  × $ 17.88 =     $1,806
Casinghead gas         0 Mcf  × $  2.08 =         $0

────────────────────────────────────────────────────
Month total                                   $1,806

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/13169 is the state's own key, not one this site invented.