FROST NATIONAL BANK UNIT

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

Operated by SAGE ENERGY COMPANY (P-5 743215) 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 13320District 01Field 69981125OilCasinghead gasSave Export

Value, all time

$800 k

Jan 1993 – Jul 2002

Value, last 12 filed months

$32 k

at the published price for each month

Months reported

115

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	39,061 bbl	$677,465
Casinghead gas	Production	148,803 Mcf	$122,888
Total			$800,353

98,842 Mcf of this lease's gas, across 48 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 (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 28.6777, -99.5346. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.0 miles.

28.67766, -99.53464 · 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%

1 of 1 wells

With a plug date

100.0%

1 of 1 wells

Median depth

9,410 ft

1 wells filed one

Completion to plug

6.8 years

median over 1 well

What the state filed about each well

On the RRC proration schedule

1100.0%

A plug date is filed

1100.0%

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

1100.0%

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

The one well that filed a depth was drilled to 9,410 ft.

Completions filed

Nov 2005

1 of 1 wells

Plug dates filed

Sep 2012

1 of 1 wells

Last completion to plug: a median of 6.8 years across the 1 well that filed both dates, with the middle half between 6.8 years and 6.8 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

1 well


42-50732414	1	9,410 ft	Nov 2005	Sep 2012	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 (115)

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

115 months


Jul 2002	0	0	24.58	3.06	$0
Jun 2002	0	0	23.73	3.34	$0
May 2002	271	0	24.66	3.58	$6,683
Apr 2002	0	513	23.65	3.51	$1,802
Mar 2002	0	670	22.00	3.10	$2,079
Feb 2002	0	562	18.22	2.38	$1,335
Jan 2002	0	680	17.17	2.38	$1,615
Dec 2001	0	675	16.93	2.36	$1,596
Nov 2001	0	510	18.07	2.41	$1,227
Oct 2001	0	920	19.78	2.53	$2,327
Sep 2001	0	2,566	24.26	2.25	$5,777
Aug 2001	0	2,560	24.87	3.05	$7,816
Jul 2001	0	545	23.93	3.20	$1,742
Jun 2001	0	0	24.56	3.82	$0
May 2001	0	0	25.52	4.31	$0
Apr 2001	0	1	24.68	5.34	$5
Mar 2001	0	45	24.54	5.38	$242
Feb 2001	0	61	27.75	5.77	$352
Jan 2001	0	28	27.47	8.40	$235
Dec 2000	0	72	26.88	9.12	$657
Nov 2000	0	40	32.21	5.66	$226
Oct 2000	0	60	31.23	5.15	$309
Sep 2000	0	135	31.87	5.19	$700
Aug 2000	180	81	29.64	4.54	$5,703
Jul 2000	0	159	28.53	4.09	$650
Jun 2000	0	118	29.30	4.40	$519
May 2000	0	52	27.26	3.68	$191
Apr 2000	0	205	24.51	3.12	$639
Mar 2000	0	292	28.42	2.86	$835
Feb 2000	177	695	27.62	2.73	$6,784
Jan 2000	182	328	25.27	2.48	$5,413
Dec 1999	342	1,113	24.28	2.42	$11,001
Nov 1999	0	278	23.19	2.43	$677
Oct 1999	150	662	20.98	2.80	$5,003
Sep 1999	474	1,175	21.75	2.62	$13,387
Aug 1999	333	1,215	19.26	2.88	$9,907
Jul 1999	327	743	17.89	2.37	$7,613
Jun 1999	166	67	15.94	2.36	$2,804
May 1999	329	1,156	15.79	2.32	$7,878
Apr 1999	481	919	15.10	2.21	$9,292
Mar 1999	348	1,090	12.47	1.84	$6,343
Feb 1999	360	826	9.98	1.82	$5,094
Jan 1999	177	339	10.38	1.90	$2,481
Dec 1998	166	1,105	9.20	1.77	$3,487
Nov 1998	336	1,115	10.89	2.19	$6,096
Oct 1998	179	1,324	12.42	1.97	$4,830
Sep 1998	171	1,460	12.59	2.08	$5,194
Aug 1998	344	1,169	11.30	1.91	$6,117
Jul 1998	0	832	11.74	2.24	$1,861
Jun 1998	0	820	11.24	2.24	$1,835
May 1998	349	56	12.62	2.21	$4,528
Apr 1998	526	0	13.04	2.51	$6,859
Mar 1998	347	519	12.80	2.31	$5,640
Feb 1998	170	721	13.95	2.30	$4,029
Jan 1998	0	703	14.70	2.15	$1,515
Dec 1997	130	432	16.32	2.41	$3,163
Nov 1997	252	471	18.19	3.09	$6,038
Oct 1997	45	438	19.25	3.15	$2,246
Sep 1997	0	938	17.74	2.95	$2,772
Aug 1997	455	1,883	17.86	2.55	$12,937
Jul 1997	808	2,171	17.58	2.25	$19,083
Jun 1997	666	2,129	17.24	2.26	$16,287
May 1997	1,027	2,103	18.97	2.31	$24,337
Apr 1997	868	2,056	17.88	2.08	$19,802
Mar 1997	594	2,113	18.95	1.94	$15,354
Feb 1997	557	1,487	20.49	2.21	$14,693
Jan 1997	903	1,760	23.48	3.54	$27,432
Dec 1996	766	2,339	23.32	—	$17,863
Nov 1996	614	2,262	21.97	—	$13,490
Oct 1996	377	1,682	23.31	—	$8,788
Sep 1996	345	1,813	22.22	—	$7,666
Aug 1996	0	1,379	20.26	—	$0
Jul 1996	322	1,929	19.55	—	$6,295
Jun 1996	120	1,815	18.73	—	$2,248
May 1996	283	2,056	19.43	—	$5,499
Apr 1996	400	1,891	21.51	—	$8,604
Mar 1996	290	1,641	19.38	—	$5,620
Feb 1996	382	1,603	16.98	—	$6,486
Jan 1996	380	1,752	17.07	—	$6,487
Dec 1995	279	1,346	17.19	—	$4,796
Nov 1995	330	1,458	16.00	—	$5,280
Oct 1995	550	1,684	15.43	—	$8,487
Sep 1995	719	1,413	16.18	—	$11,633
Aug 1995	400	1,385	15.92	—	$6,368
Jul 1995	403	1,897	15.24	—	$6,142
Jun 1995	556	1,922	16.41	—	$9,124
May 1995	603	1,688	17.56	—	$10,589
Apr 1995	168	620	17.73	—	$2,979
Mar 1995	71	595	16.44	—	$1,167
Feb 1995	140	278	16.58	—	$2,321
Jan 1995	178	564	15.92	—	$2,834
Dec 1994	677	646	15.03	—	$10,175
Nov 1994	321	635	15.90	—	$5,104
Oct 1994	456	670	15.58	—	$7,104
Sep 1994	699	765	15.29	—	$10,688
Aug 1994	10	567	16.13	—	$161
Jul 1994	36	1,060	17.56	—	$632
Jun 1994	87	1,264	17.09	—	$1,487
May 1994	132	802	15.88	—	$2,096
Apr 1994	221	899	14.14	—	$3,125
Mar 1994	0	509	12.46	—	$0
Feb 1994	0	783	12.50	—	$0
Jan 1994	76	926	12.66	—	$962
Dec 1993	72	1,498	12.33	—	$888
Nov 1993	253	1,257	14.49	—	$3,666
Oct 1993	528	2,572	15.85	—	$8,369
Sep 1993	1,038	3,146	15.03	—	$15,601
Aug 1993	1,370	4,648	15.66	—	$21,454
Jul 1993	1,815	4,781	15.46	—	$28,060
Jun 1993	1,499	4,383	16.79	—	$25,168
May 1993	1,199	4,887	17.68	—	$21,198
Apr 1993	1,178	4,303	18.05	—	$21,263
Mar 1993	1,620	6,520	18.14	—	$29,387
Feb 1993	1,816	8,036	17.90	—	$32,506
Jan 1993	2,092	6,273	16.93	—	$35,418

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 2002 — as filed, then multipliedworked

Oil                  271 bbl  × $ 24.66 =     $6,683
Casinghead gas         0 Mcf  × $  3.58 =         $0

────────────────────────────────────────────────────
Month total                                   $6,683

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/13320 is the state's own key, not one this site invented.