HEADLEE DEVONIAN UNIT

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

Operated by FOUR STAR OIL AND GAS COMPANY (P-5 280606) in the HEADLEE, N. (DEVONIAN) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 30921District 08Field 39971500Hydrogen sulphide fieldOilCasinghead gasSave Export

Value, all time

$3.9 M

Jan 1993 – Feb 2009

Value, last 12 filed months

$328 k

at the published price for each month

Months reported

194

no gaps in the span

Streams

oil, casinghead gas

The HEADLEE, N. (DEVONIAN) 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 35 leases and 73 wells, and the rule below applies to all of them.

Discovered

1956-04-04

as the register files it

Field class

Oil and gas

the register's own label

Between wells

1,320 ft

minimum

From a lease line

660 ft

minimum

A drilling unit in this field needs at least 80 acres. The field rule took effect on 1957-07-19.

The register flags this field for hydrogen sulphide. That is a poisonous gas that occurs naturally in some formations. The flag is a property of the field as the Commission records it. It is not a measurement taken at this lease, and it is not a statement that gas is escaping anywhere.

The Commission's schedule remark for this field reads: “FIRST GAS WELL IN AN OIL FIELD.”

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	30,709 bbl	$779,214
Casinghead gas	Production	913,868 Mcf	$3,133,493
Total			$3,912,707

250,391 Mcf of this lease's gas, across 46 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 31.9198, -102.3600. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.0 miles.

31.91977, -102.36003 · 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

12,181 ft

1 wells filed one

Completion to plug

60.3 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 12,181 ft.

Completions filed

Dec 1959

1 of 1 wells

Plug dates filed

Mar 2020

1 of 1 wells

Last completion to plug: a median of 60.3 years across the 1 well that filed both dates, with the middle half between 60.3 years and 60.3 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

1 well


42-13508701	6701	12,181 ft	Dec 1959	Mar 2020	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 (194)

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

194 months


Feb 2009	0	0	32.81	4.63	$0
Jan 2009	0	0	35.86	5.37	$0
Dec 2008	162	0	37.10	5.98	$6,010
Nov 2008	0	0	55.49	6.86	$0
Oct 2008	0	3,171	75.24	6.92	$21,950
Sep 2008	181	2,881	101.76	7.88	$41,112
Aug 2008	0	3,028	114.22	8.48	$25,687
Jul 2008	180	3,429	131.08	11.39	$62,649
Jun 2008	0	3,464	131.33	13.03	$45,145
May 2008	186	2,993	123.17	11.57	$57,551
Apr 2008	0	3,286	110.31	10.45	$34,355
Mar 2008	0	3,483	101.90	9.66	$33,660
Feb 2008	185	3,209	92.53	8.77	$45,263
Jan 2008	0	2,905	90.38	8.21	$23,838
Dec 2007	0	2,979	88.33	7.30	$21,753
Nov 2007	180	2,983	91.67	7.29	$38,252
Oct 2007	0	3,161	82.85	6.92	$21,880
Sep 2007	0	2,604	75.84	6.24	$16,260
Aug 2007	180	3,301	69.06	6.39	$33,517
Jul 2007	180	3,401	70.90	6.39	$34,487
Jun 2007	0	2,773	62.00	7.55	$20,932
May 2007	0	3,404	58.74	7.85	$26,709
Apr 2007	181	3,026	59.61	7.81	$34,408
Mar 2007	0	3,216	56.92	7.30	$23,483
Feb 2007	0	2,999	55.10	8.22	$24,640
Jan 2007	180	3,288	50.30	6.73	$31,172
Dec 2006	0	3,285	56.65	6.92	$22,727
Nov 2006	0	3,522	54.20	7.62	$26,829
Oct 2006	171	3,565	54.90	6.01	$30,827
Sep 2006	0	3,513	60.08	5.04	$17,696
Aug 2006	185	3,559	68.71	7.34	$38,834
Jul 2006	0	3,532	69.37	6.34	$22,403
Jun 2006	0	3,427	66.28	6.38	$21,878
May 2006	179	3,597	66.01	6.42	$34,927
Apr 2006	0	3,658	64.39	7.36	$26,925
Mar 2006	180	3,229	56.70	7.08	$33,077
Feb 2006	0	3,266	57.59	7.75	$25,315
Jan 2006	0	3,689	60.59	8.93	$32,955
Dec 2005	166	3,602	54.94	13.42	$57,442
Nov 2005	175	3,633	54.69	10.59	$48,038
Oct 2005	0	4,050	58.34	13.80	$55,873
Sep 2005	182	3,560	61.45	12.08	$54,185
Aug 2005	0	3,575	61.51	9.80	$35,024
Jul 2005	0	3,816	55.69	7.84	$29,931
Jun 2005	180	3,743	52.33	7.38	$37,047
May 2005	0	3,946	45.22	6.65	$26,245
Apr 2005	179	3,780	49.20	7.36	$36,629
Mar 2005	0	3,827	50.37	7.15	$27,382
Feb 2005	179	3,564	45.22	6.31	$30,590
Jan 2005	0	4,009	43.16	6.32	$25,346
Dec 2004	181	3,810	39.86	6.75	$32,936
Nov 2004	0	3,891	45.28	6.33	$24,632
Oct 2004	0	3,794	49.70	6.52	$24,718
Sep 2004	184	3,803	43.24	5.28	$28,051
Aug 2004	0	4,231	42.37	5.55	$23,485
Jul 2004	182	4,497	38.28	6.08	$34,328
Jun 2004	0	5,032	36.10	6.43	$32,371
May 2004	180	4,110	37.48	6.49	$33,439
Apr 2004	0	4,126	34.47	5.86	$24,172
Mar 2004	184	4,230	34.36	5.53	$29,715
Feb 2004	0	4,063	32.45	5.51	$22,386
Jan 2004	183	4,586	32.03	6.30	$34,752
Dec 2003	0	4,174	30.26	6.30	$26,303
Nov 2003	180	4,806	28.80	4.60	$27,268
Oct 2003	0	4,262	28.17	4.76	$20,286
Sep 2003	187	4,452	26.31	4.75	$26,064
Aug 2003	0	4,878	29.76	5.13	$25,023
Jul 2003	187	4,200	29.41	5.17	$27,217
Jun 2003	0	4,305	28.56	5.98	$25,757
May 2003	102	4,526	26.59	5.97	$29,745
Apr 2003	180	4,517	26.67	5.41	$29,225
Mar 2003	0	4,387	31.14	6.10	$26,743
Feb 2003	193	4,145	33.48	7.93	$39,314
Jan 2003	190	4,702	30.31	5.58	$32,006
Dec 2002	0	4,909	26.91	4.85	$23,827
Nov 2002	190	4,604	24.66	4.14	$23,732
Oct 2002	0	4,784	26.46	4.23	$20,232
Sep 2002	187	4,303	27.44	3.64	$20,774
Aug 2002	0	4,732	25.96	3.16	$14,973
Jul 2002	190	4,691	24.58	3.06	$19,033
Jun 2002	0	4,764	23.73	3.34	$15,903
May 2002	190	5,087	24.66	3.58	$22,917
Apr 2002	190	4,778	23.65	3.51	$21,275
Mar 2002	0	4,801	22.00	3.10	$14,896
Feb 2002	190	4,435	18.22	2.38	$13,998
Jan 2002	190	5,020	17.17	2.38	$15,188
Dec 2001	0	5,094	16.93	2.36	$12,044
Nov 2001	190	4,940	18.07	2.41	$15,317
Oct 2001	197	5,016	19.78	2.53	$16,582
Sep 2001	0	5,163	24.26	2.25	$11,624
Aug 2001	190	5,124	24.87	3.05	$20,370
Jul 2001	0	7,032	23.93	3.20	$22,482
Jun 2001	193	5,061	24.56	3.82	$24,094
May 2001	190	5,113	25.52	4.31	$26,872
Apr 2001	0	4,987	24.68	5.34	$26,607
Mar 2001	193	5,200	24.54	5.38	$32,694
Feb 2001	193	4,657	27.75	5.77	$32,213
Jan 2001	0	5,175	27.47	8.40	$43,464
Dec 2000	190	4,891	26.88	9.12	$49,725
Nov 2000	190	5,173	32.21	5.66	$35,389
Oct 2000	0	5,610	31.23	5.15	$28,866
Sep 2000	182	5,632	31.87	5.19	$35,011
Aug 2000	190	7,169	29.64	4.54	$38,184
Jul 2000	187	5,785	28.53	4.09	$28,994
Jun 2000	0	4,994	29.30	4.40	$21,960
May 2000	190	5,263	27.26	3.68	$24,546
Apr 2000	0	5,193	24.51	3.12	$16,181
Mar 2000	187	5,388	28.42	2.86	$20,723
Feb 2000	205	4,890	27.62	2.73	$18,995
Jan 2000	182	5,468	25.27	2.48	$18,163
Dec 1999	386	5,368	24.28	2.42	$22,383
Nov 1999	0	5,168	23.19	2.43	$12,579
Oct 1999	0	5,280	20.98	2.80	$14,804
Sep 1999	347	5,794	21.75	2.62	$22,721
Aug 1999	0	6,080	19.26	2.88	$17,484
Jul 1999	0	4,129	17.89	2.37	$9,796
Jun 1999	360	5,514	15.94	2.36	$18,763
May 1999	0	5,815	15.79	2.32	$13,497
Apr 1999	360	5,278	15.10	2.21	$17,090
Mar 1999	0	5,393	12.47	1.84	$9,914
Feb 1999	352	4,896	9.98	1.82	$12,413
Jan 1999	0	5,761	10.38	1.90	$10,946
Dec 1998	0	5,540	9.20	1.77	$9,824
Nov 1998	358	5,356	10.89	2.19	$15,605
Oct 1998	0	5,725	12.42	1.97	$11,274
Sep 1998	371	5,161	12.59	2.08	$15,419
Aug 1998	0	5,511	11.30	1.91	$10,511
Jul 1998	338	6,220	11.74	2.24	$17,884
Jun 1998	0	8,010	11.24	2.24	$17,921
May 1998	369	6,662	12.62	2.21	$19,355
Apr 1998	0	5,973	13.04	2.51	$14,964
Mar 1998	371	6,317	12.80	2.31	$19,338
Feb 1998	2	5,975	13.95	2.30	$13,765
Jan 1998	327	5,501	14.70	2.15	$16,660
Dec 1997	0	5,739	16.32	2.41	$13,837
Nov 1997	360	7,157	18.19	3.09	$28,651
Oct 1997	0	4,667	19.25	3.15	$14,700
Sep 1997	0	7,448	17.74	2.95	$22,008
Aug 1997	365	7,316	17.86	2.55	$25,209
Jul 1997	0	9,578	17.58	2.25	$21,521
Jun 1997	369	7,060	17.24	2.26	$22,297
May 1997	0	5,279	18.97	2.31	$12,187
Apr 1997	363	7,912	17.88	2.08	$22,969
Mar 1997	80	5,635	18.95	1.94	$12,443
Feb 1997	374	5,627	20.49	2.21	$20,076
Jan 1997	349	9,248	23.48	3.54	$40,930
Dec 1996	0	7,953	23.32	—	$0
Nov 1996	366	7,843	21.97	—	$8,041
Oct 1996	377	7,455	23.31	—	$8,788
Sep 1996	366	7,799	22.22	—	$8,133
Aug 1996	0	0	20.26	—	$0
Jul 1996	369	5,694	19.55	—	$7,214
Jun 1996	366	6,606	18.73	—	$6,855
May 1996	410	5,396	19.43	—	$7,966
Apr 1996	470	5,603	21.51	—	$10,110
Mar 1996	0	3,835	19.38	—	$0
Feb 1996	385	3,978	16.98	—	$6,537
Jan 1996	437	5,913	17.07	—	$7,460
Dec 1995	0	4,351	17.19	—	$0
Nov 1995	393	3,846	16.00	—	$6,288
Oct 1995	380	3,846	15.43	—	$5,863
Sep 1995	0	0	16.18	—	$0
Aug 1995	360	3,569	15.92	—	$5,731
Jul 1995	0	4,404	15.24	—	$0
Jun 1995	389	5,094	16.41	—	$6,383
May 1995	487	5,094	17.56	—	$8,552
Apr 1995	0	3,657	17.73	—	$0
Mar 1995	358	5,147	16.44	—	$5,886
Feb 1995	0	4,404	16.58	—	$0
Jan 1995	413	5,404	15.92	—	$6,575
Dec 1994	371	4,727	15.03	—	$5,576
Nov 1994	484	4,102	15.90	—	$7,696
Oct 1994	0	5,901	15.58	—	$0
Sep 1994	454	6,325	15.29	—	$6,942
Aug 1994	410	8,880	16.13	—	$6,613
Jul 1994	0	9,025	17.56	—	$0
Jun 1994	408	4,946	17.09	—	$6,973
May 1994	0	6,523	15.88	—	$0
Apr 1994	399	5,697	14.14	—	$5,642
Mar 1994	434	8,172	12.46	—	$5,408
Feb 1994	436	7,633	12.50	—	$5,450
Jan 1994	0	5,299	12.66	—	$0
Dec 1993	385	7,076	12.33	—	$4,747
Nov 1993	469	7,558	14.49	—	$6,796
Oct 1993	0	4,996	15.85	—	$0
Sep 1993	436	3,138	15.03	—	$6,553
Aug 1993	0	5,603	15.66	—	$0
Jul 1993	438	6,744	15.46	—	$6,771
Jun 1993	1,073	6,979	16.79	—	$18,016
May 1993	865	6,083	17.68	—	$15,293
Apr 1993	0	1,837	18.05	—	$0
Mar 1993	422	2,077	18.14	—	$7,655
Feb 1993	438	1,979	17.90	—	$7,840
Jan 1993	0	2,200	16.93	—	$0

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.

Dec 2008 — as filed, then multipliedworked

Oil                  162 bbl  × $ 37.10 =     $6,010
Casinghead gas         0 Mcf  × $  5.98 =         $0

────────────────────────────────────────────────────
Month total                                   $6,010

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. 08/O/30921 is the state's own key, not one this site invented.