STATE "XV"

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

Operated by KERR-MCGEE OIL & GAS ONSHORE LP (P-5 457807) in the BLOCK 17, SOUTHEAST (DELAWARE) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 25051District 08Field 09288500Hydrogen sulphide fieldOilCasinghead gasSave Export

Value, all time

$8.1 M

Jan 1993 – Feb 2020

Value, last 12 filed months

at the published price for each month

Months reported

326

no gaps in the span

Streams

oil, casinghead gas

The BLOCK 17, SOUTHEAST (DELAWARE) 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 44 leases and 65 wells, and the rule below applies to all of them.

Discovered

1956-02-01

as the register files it

Field class

Oil and gas

the register's own label

Between wells

1,100 ft

minimum

From a lease line

550 ft

minimum

A drilling unit in this field needs at least 40 acres. The field rule took effect on 1960-01-01.

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: “MULTIPLE 49B RULE”

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	201,965 bbl	$5,987,678
Casinghead gas	Production	546,629 Mcf	$2,153,433
Total			$8,141,111

137,416 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 (4)

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 31.5795, -103.2497. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.8 miles.

31.58112, -103.24991 · 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%

4 of 4 wells

With a plug date

100.0%

4 of 4 wells

Median depth

5,900 ft

4 wells filed one

Completion to plug

34.5 years

median over 4 wells

What the state filed about each well

On the RRC proration schedule

4100.0%

A plug date is filed

4100.0%

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

4100.0%

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 5,300 and 6,750 ft, median 5,900 ft, over the 4 wells that filed a depth.

Completions filed

May 1978 – Sep 1984

4 of 4 wells

Plug dates filed

Sep 2014 – Dec 2017

4 of 4 wells

Last completion to plug: a median of 34.5 years across the 4 wells that filed both dates, with the middle half between 33.1 years and 36.1 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

4 wells


42-47533428	7	6,750 ft	Sep 1984	Sep 2014	Yes
42-47532006	6	5,400 ft	Aug 1980	Sep 2014	Yes
42-47531938	5	5,300 ft	Oct 1979	Sep 2014	Yes
42-47531735	4	6,400 ft	May 1978	Dec 2017	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 (326)

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

326 months


Feb 2020	0	0	49.88	1.98	$0
Jan 2020	0	0	57.25	2.09	$0
Dec 2019	0	0	59.01	2.30	$0
Nov 2019	0	0	55.30	2.75	$0
Oct 2019	0	0	53.47	2.42	$0
Sep 2019	0	0	55.05	2.66	$0
Aug 2019	0	0	53.11	2.30	$0
Jul 2019	0	0	56.27	2.46	$0
Jun 2019	0	0	52.78	2.49	$0
May 2019	0	0	58.48	2.74	$0
Apr 2019	0	0	62.63	2.75	$0
Mar 2019	0	0	56.80	3.06	$0
Feb 2019	0	0	50.85	2.79	$0
Jan 2019	0	0	46.03	3.23	$0
Dec 2018	0	0	46.59	4.19	$0
Nov 2018	0	0	52.93	4.24	$0
Oct 2018	0	0	61.44	3.40	$0
Sep 2018	0	0	59.54	3.11	$0
Aug 2018	0	0	59.40	3.07	$0
Jul 2018	0	0	65.14	2.93	$0
Jun 2018	0	0	60.18	3.08	$0
May 2018	0	0	65.38	2.90	$0
Apr 2018	0	0	63.84	2.90	$0
Mar 2018	0	0	61.22	2.79	$0
Feb 2018	0	0	61.78	2.77	$0
Jan 2018	0	0	62.87	4.01	$0
Dec 2017	0	0	57.27	2.92	$0
Nov 2017	0	0	55.42	3.12	$0
Oct 2017	0	0	49.29	2.98	$0
Sep 2017	0	0	47.52	3.09	$0
Aug 2017	0	0	45.37	3.00	$0
Jul 2017	0	0	43.87	3.09	$0
Jun 2017	0	0	42.49	3.09	$0
May 2017	0	0	45.37	3.26	$0
Apr 2017	0	0	47.93	3.21	$0
Mar 2017	0	0	46.77	2.98	$0
Feb 2017	0	0	50.45	2.95	$0
Jan 2017	0	0	49.41	3.42	$0
Dec 2016	0	0	48.76	3.72	$0
Nov 2016	0	0	42.49	2.64	$0
Oct 2016	0	0	46.19	3.09	$0
Sep 2016	0	0	41.55	3.10	$0
Aug 2016	0	0	41.44	2.92	$0
Jul 2016	0	0	41.62	2.92	$0
Jun 2016	0	0	45.35	2.69	$0
May 2016	0	0	42.52	1.99	$0
Apr 2016	0	0	36.56	1.99	$0
Mar 2016	0	0	33.01	1.79	$0
Feb 2016	0	0	26.47	2.06	$0
Jan 2016	0	0	27.35	2.36	$0
Dec 2015	0	0	32.36	2.00	$0
Nov 2015	0	0	38.79	2.17	$0
Oct 2015	0	0	43.55	2.43	$0
Sep 2015	0	0	42.99	2.76	$0
Aug 2015	0	0	40.16	2.87	$0
Jul 2015	464	0	48.15	2.95	$22,342
Jun 2015	0	0	56.15	2.88	$0
May 2015	0	0	55.21	2.96	$0
Apr 2015	0	0	49.82	2.71	$0
Mar 2015	0	0	42.89	2.93	$0
Feb 2015	0	0	44.66	2.98	$0
Jan 2015	0	0	43.43	3.10	$0
Dec 2014	0	0	54.69	3.59	$0
Nov 2014	0	0	70.46	4.25	$0
Oct 2014	0	0	78.30	3.90	$0
Sep 2014	7	0	86.16	4.05	$603
Aug 2014	0	0	89.39	4.04	$0
Jul 2014	1	0	96.56	4.18	$97
Jun 2014	0	0	98.16	4.74	$0
May 2014	0	0	94.73	4.73	$0
Apr 2014	0	0	95.94	4.81	$0
Mar 2014	0	13	95.89	5.06	$66
Feb 2014	0	8	97.40	6.19	$50
Jan 2014	0	7	90.40	4.86	$34
Dec 2013	0	9	91.82	4.35	$39
Nov 2013	0	10	88.85	3.74	$37
Oct 2013	0	12	97.42	3.78	$45
Sep 2013	0	0	104.11	3.72	$0
Aug 2013	0	3	104.25	3.52	$11
Jul 2013	0	0	102.52	3.72	$0
Jun 2013	0	0	94.40	3.93	$0
May 2013	0	0	94.83	4.15	$0
Apr 2013	0	0	93.96	4.28	$0
Mar 2013	0	0	93.62	3.91	$0
Feb 2013	0	2	91.23	3.42	$7
Jan 2013	0	3	91.60	3.42	$10
Dec 2012	0	3	86.77	3.42	$10
Nov 2012	0	30	86.95	3.62	$109
Oct 2012	0	0	89.38	3.40	$0
Sep 2012	0	0	94.67	2.92	$0
Aug 2012	0	56	92.66	2.91	$163
Jul 2012	0	0	85.13	3.02	$0
Jun 2012	0	0	79.82	2.52	$0
May 2012	0	0	91.61	2.49	$0
Apr 2012	0	0	101.65	2.00	$0
Mar 2012	0	0	105.05	2.22	$0
Feb 2012	0	0	101.10	2.57	$0
Jan 2012	0	0	98.09	2.73	$0
Dec 2011	0	0	96.87	3.24	$0
Nov 2011	0	0	95.72	3.31	$0
Oct 2011	0	0	84.98	3.65	$0
Sep 2011	167	0	83.62	3.99	$13,965
Aug 2011	0	0	83.40	4.15	$0
Jul 2011	0	0	94.14	4.52	$0
Jun 2011	0	103	92.90	4.64	$478
May 2011	0	116	98.13	4.40	$511
Apr 2011	0	5	105.96	4.33	$22
Mar 2011	0	0	96.36	4.06	$0
Feb 2011	33	28	85.64	4.18	$2,943
Jan 2011	0	168	86.50	4.59	$771
Dec 2010	74	302	85.73	4.35	$7,657
Nov 2010	68	400	80.84	3.80	$7,015
Oct 2010	171	658	78.10	3.51	$15,664
Sep 2010	6	683	72.63	3.98	$3,154
Aug 2010	82	2,262	73.68	4.42	$16,038
Jul 2010	212	4,209	72.55	4.74	$35,316
Jun 2010	0	720	70.36	4.91	$3,535
May 2010	71	598	71.12	4.24	$7,582
Apr 2010	103	724	81.69	4.12	$11,399
Mar 2010	160	823	78.39	4.39	$16,154
Feb 2010	0	522	73.58	5.44	$2,841
Jan 2010	97	738	74.36	5.96	$11,614
Dec 2009	119	787	71.44	5.48	$12,817
Nov 2009	209	1,069	74.59	3.75	$19,600
Oct 2009	166	1,137	72.54	4.11	$16,715
Sep 2009	162	730	65.54	3.06	$12,855
Aug 2009	232	642	67.42	3.22	$17,708
Jul 2009	243	804	61.13	3.46	$17,640
Jun 2009	76	458	66.16	3.90	$6,812
May 2009	244	882	54.74	3.93	$16,819
Apr 2009	134	982	46.77	3.59	$9,790
Mar 2009	151	1,414	42.14	4.06	$12,103
Feb 2009	334	1,488	32.81	4.63	$17,852
Jan 2009	272	1,729	35.86	5.37	$19,040
Dec 2008	289	1,617	37.10	5.98	$20,387
Nov 2008	360	1,592	55.49	6.86	$30,898
Oct 2008	454	1,882	75.24	6.92	$47,186
Sep 2008	417	2,200	101.76	7.88	$59,764
Aug 2008	447	2,329	114.22	8.48	$70,813
Jul 2008	580	2,558	131.08	11.39	$105,161
Jun 2008	569	2,616	131.33	13.03	$108,820
May 2008	627	3,096	123.17	11.57	$113,062
Apr 2008	849	3,643	110.31	10.45	$131,740
Mar 2008	1,118	3,966	101.90	9.66	$152,252
Feb 2008	841	3,867	92.53	8.77	$111,734
Jan 2008	873	4,166	90.38	8.21	$113,087
Dec 2007	818	3,399	88.33	7.30	$97,073
Nov 2007	750	2,958	91.67	7.29	$90,321
Oct 2007	485	2,528	82.85	6.92	$57,681
Sep 2007	404	2,651	75.84	6.24	$47,193
Aug 2007	459	2,771	69.06	6.39	$49,400
Jul 2007	510	2,554	70.90	6.39	$52,474
Jun 2007	436	2,796	62.00	7.55	$48,137
May 2007	520	3,192	58.74	7.85	$55,590
Apr 2007	506	3,287	59.61	7.81	$55,818
Mar 2007	582	3,473	56.92	7.30	$58,487
Feb 2007	531	1,002	55.10	8.22	$37,491
Jan 2007	629	3,949	50.30	6.73	$58,203
Dec 2006	665	3,619	56.65	6.92	$62,710
Nov 2006	988	1,835	54.20	7.62	$67,528
Oct 2006	912	2,186	54.90	6.01	$63,215
Sep 2006	521	774	60.08	5.04	$35,200
Aug 2006	464	1,327	68.71	7.34	$41,622
Jul 2006	931	2,263	69.37	6.34	$78,937
Jun 2006	759	3,007	66.28	6.38	$69,503
May 2006	824	2,325	66.01	6.42	$69,330
Apr 2006	804	1,945	64.39	7.36	$66,086
Mar 2006	634	1,877	56.70	7.08	$49,242
Feb 2006	639	2,070	57.59	7.75	$52,845
Jan 2006	992	2,497	60.59	8.93	$82,412
Dec 2005	679	2,766	54.94	13.42	$74,411
Nov 2005	588	2,616	54.69	10.59	$59,857
Oct 2005	736	2,889	58.34	13.80	$82,794
Sep 2005	650	2,532	61.45	12.08	$70,527
Aug 2005	692	2,960	61.51	9.80	$71,564
Jul 2005	760	3,023	55.69	7.84	$66,036
Jun 2005	640	2,847	52.33	7.38	$54,505
May 2005	820	3,268	45.22	6.65	$58,816
Apr 2005	739	3,083	49.20	7.36	$59,051
Mar 2005	793	3,192	50.37	7.15	$62,782
Feb 2005	957	3,235	45.22	6.31	$63,695
Jan 2005	1,045	2,756	43.16	6.32	$62,526
Dec 2004	680	3,007	39.86	6.75	$47,405
Nov 2004	660	0	45.28	6.33	$29,885
Oct 2004	912	3,427	49.70	6.52	$67,654
Sep 2004	969	2,597	43.24	5.28	$55,622
Aug 2004	1,113	3,683	42.37	5.55	$67,601
Jul 2004	1,061	3,524	38.28	6.08	$62,056
Jun 2004	943	3,570	36.10	6.43	$57,008
May 2004	1,262	3,693	37.48	6.49	$71,284
Apr 2004	1,269	3,328	34.47	5.86	$63,239
Mar 2004	1,263	3,216	34.36	5.53	$61,182
Feb 2004	1,030	2,620	32.45	5.51	$47,859
Jan 2004	1,042	3,084	32.03	6.30	$52,803
Dec 2003	1,048	3,003	30.26	6.30	$50,636
Nov 2003	1,061	3,010	28.80	4.60	$44,388
Oct 2003	934	3,047	28.17	4.76	$40,813
Sep 2003	792	2,770	26.31	4.75	$33,993
Aug 2003	929	2,708	29.76	5.13	$41,538
Jul 2003	1,109	2,907	29.41	5.17	$47,647
Jun 2003	1,142	2,754	28.56	5.98	$49,093
May 2003	1,081	2,795	26.59	5.97	$45,437
Apr 2003	967	3,174	26.67	5.41	$42,953
Mar 2003	1,191	3,249	31.14	6.10	$56,894
Feb 2003	1,018	2,693	33.48	7.93	$55,427
Jan 2003	1,234	2,958	30.31	5.58	$53,914
Dec 2002	870	2,650	26.91	4.85	$36,274
Nov 2002	780	2,424	24.66	4.14	$29,263
Oct 2002	967	3,252	26.46	4.23	$39,340
Sep 2002	1,001	3,000	27.44	3.64	$38,373
Aug 2002	1,117	3,290	25.96	3.16	$39,407
Jul 2002	1,488	3,488	24.58	3.06	$47,254
Jun 2002	1,585	2,564	23.73	3.34	$46,171
May 2002	1,566	1,584	24.66	3.58	$44,295
Apr 2002	1,604	1,166	23.65	3.51	$42,030
Mar 2002	1,648	626	22.00	3.10	$38,198
Feb 2002	954	1,920	18.22	2.38	$21,943
Jan 2002	1,083	2,405	17.17	2.38	$24,309
Dec 2001	1,027	2,218	16.93	2.36	$22,631
Nov 2001	1,088	2,511	18.07	2.41	$25,700
Oct 2001	1,035	2,524	19.78	2.53	$26,855
Sep 2001	959	2,142	24.26	2.25	$28,088
Aug 2001	807	2,156	24.87	3.05	$26,653
Jul 2001	1,001	2,715	23.93	3.20	$32,634
Jun 2001	1,177	2,593	24.56	3.82	$38,823
May 2001	998	3,437	25.52	4.31	$40,273
Apr 2001	721	3,631	24.68	5.34	$37,167
Mar 2001	716	2,099	24.54	5.38	$28,856
Feb 2001	744	1,735	27.75	5.77	$30,652
Jan 2001	797	1,836	27.47	8.40	$37,314
Dec 2000	751	1,632	26.88	9.12	$35,075
Nov 2000	753	2,585	32.21	5.66	$38,880
Oct 2000	915	1,481	31.23	5.15	$36,196
Sep 2000	964	2,920	31.87	5.19	$45,867
Aug 2000	1,017	2,697	29.64	4.54	$42,390
Jul 2000	1,208	3,058	28.53	4.09	$46,971
Jun 2000	1,150	2,978	29.30	4.40	$46,790
May 2000	1,196	3,280	27.26	3.68	$44,673
Apr 2000	1,295	3,056	24.51	3.12	$41,263
Mar 2000	1,378	3,158	28.42	2.86	$48,194
Feb 2000	1,037	2,887	27.62	2.73	$36,513
Jan 2000	936	2,843	25.27	2.48	$30,705
Dec 1999	1,064	2,475	24.28	2.42	$31,833
Nov 1999	1,248	2,308	23.19	2.43	$34,559
Oct 1999	1,042	2,660	20.98	2.80	$29,319
Sep 1999	787	1,944	21.75	2.62	$22,208
Aug 1999	1,157	2,584	19.26	2.88	$29,714
Jul 1999	1,060	2,758	17.89	2.37	$25,506
Jun 1999	1,251	2,951	15.94	2.36	$26,912
May 1999	1,209	3,205	15.79	2.32	$26,529
Apr 1999	1,167	2,848	15.10	2.21	$23,910
Mar 1999	1,025	2,801	12.47	1.84	$17,931
Feb 1999	1,058	2,424	9.98	1.82	$14,965
Jan 1999	773	2,166	10.38	1.90	$12,139
Dec 1998	1,054	2,317	9.20	1.77	$13,806
Nov 1998	1,117	2,449	10.89	2.19	$17,517
Oct 1998	886	2,098	12.42	1.97	$15,136
Sep 1998	1,113	2,226	12.59	2.08	$18,649
Aug 1998	1,290	2,525	11.30	1.91	$19,393
Jul 1998	1,181	2,232	11.74	2.24	$18,859
Jun 1998	1,154	2,257	11.24	2.24	$18,020
May 1998	1,358	2,415	12.62	2.21	$22,466
Apr 1998	1,053	2,921	13.04	2.51	$21,049
Mar 1998	1,154	2,218	12.80	2.31	$19,894
Feb 1998	761	1,552	13.95	2.30	$14,184
Jan 1998	1,141	2,319	14.70	2.15	$21,770
Dec 1997	1,496	2,732	16.32	2.41	$31,002
Nov 1997	1,018	1,964	18.19	3.09	$24,583
Oct 1997	1,053	2,456	19.25	3.15	$28,006
Sep 1997	1,097	2,865	17.74	2.95	$27,927
Aug 1997	932	2,516	17.86	2.55	$23,073
Jul 1997	1,347	3,207	17.58	2.25	$30,886
Jun 1997	1,111	2,780	17.24	2.26	$25,429
May 1997	1,107	2,984	18.97	2.31	$27,888
Apr 1997	1,137	3,332	17.88	2.08	$27,269
Mar 1997	1,539	3,447	18.95	1.94	$35,848
Feb 1997	1,431	3,140	20.49	2.21	$36,248
Jan 1997	1,287	3,458	23.48	3.54	$42,459
Dec 1996	1,027	3,827	23.32	—	$23,950
Nov 1996	1,168	2,116	21.97	—	$25,661
Oct 1996	1,297	3,380	23.31	—	$30,233
Sep 1996	1,158	3,120	22.22	—	$25,731
Aug 1996	1,212	3,652	20.26	—	$24,555
Jul 1996	964	3,010	19.55	—	$18,846
Jun 1996	789	2,279	18.73	—	$14,778
May 1996	869	2,204	19.43	—	$16,885
Apr 1996	1,582	3,282	21.51	—	$34,029
Mar 1996	899	2,548	19.38	—	$17,423
Feb 1996	1,222	3,384	16.98	—	$20,750
Jan 1996	1,402	3,848	17.07	—	$23,932
Dec 1995	1,170	3,552	17.19	—	$20,112
Nov 1995	1,512	4,329	16.00	—	$24,192
Oct 1995	1,309	3,832	15.43	—	$20,198
Sep 1995	1,092	1,993	16.18	—	$17,669
Aug 1995	1,360	2,524	15.92	—	$21,651
Jul 1995	1,235	2,727	15.24	—	$18,821
Jun 1995	1,294	2,534	16.41	—	$21,235
May 1995	1,266	2,545	17.56	—	$22,231
Apr 1995	1,327	2,652	17.73	—	$23,528
Mar 1995	1,415	2,463	16.44	—	$23,263
Feb 1995	1,269	1,940	16.58	—	$21,040
Jan 1995	1,474	2,271	15.92	—	$23,466
Dec 1994	1,372	2,269	15.03	—	$20,621
Nov 1994	1,355	2,306	15.90	—	$21,545
Oct 1994	1,421	2,651	15.58	—	$22,139
Sep 1994	1,239	2,340	15.29	—	$18,944
Aug 1994	1,313	2,348	16.13	—	$21,179
Jul 1994	1,281	2,783	17.56	—	$22,494
Jun 1994	1,262	2,646	17.09	—	$21,568
May 1994	1,277	2,539	15.88	—	$20,279
Apr 1994	1,260	2,612	14.14	—	$17,816
Mar 1994	1,327	2,561	12.46	—	$16,534
Feb 1994	987	2,289	12.50	—	$12,338
Jan 1994	1,106	2,706	12.66	—	$14,002
Dec 1993	1,236	2,926	12.33	—	$15,240
Nov 1993	1,316	2,832	14.49	—	$19,069
Oct 1993	1,750	3,265	15.85	—	$27,738
Sep 1993	1,989	3,429	15.03	—	$29,895
Aug 1993	1,933	3,391	15.66	—	$30,271
Jul 1993	1,538	2,899	15.46	—	$23,777
Jun 1993	1,676	3,033	16.79	—	$28,140
May 1993	1,848	3,173	17.68	—	$32,673
Apr 1993	1,413	5,430	18.05	—	$25,505
Mar 1993	1,061	2,603	18.14	—	$19,247
Feb 1993	811	2,350	17.90	—	$14,517
Jan 1993	837	2,023	16.93	—	$14,170

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.

Jul 2015 — as filed, then multipliedworked

Oil                  464 bbl  × $ 48.15 =    $22,342
Casinghead gas         0 Mcf  × $  2.95 =         $0

────────────────────────────────────────────────────
Month total                                  $22,342

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/25051 is the state's own key, not one this site invented.