CURRIE

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

Operated by LEGACY RESERVES OPERATING LP (P-5 495445) in the DEWEY LAKE, S. (WOLFCAMP) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 31899District 08Field 24489385OilCasinghead gasSave Export

Value, all time

$6.6 M

Jan 1993 – Jun 2020

Value, last 12 filed months

$44 k

at the published price for each month

Months reported

330

no gaps in the span

Streams

oil, casinghead gas

The DEWEY LAKE, S. (WOLFCAMP) 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 7 leases and 8 wells, and the rule below applies to all of them.

Discovered

1983-06-10

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 1985-09-16.

The Commission's schedule remark for this field reads: “#85280300 EFF 12/01/2019”

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	107,334 bbl	$3,520,577
Casinghead gas	Production	810,870 Mcf	$3,079,194
Total			$6,599,771

123,199 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 31.8710, -101.6533. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.0 miles.

31.87101, -101.65330 · 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

0.0%

0 of 1 wells

Median depth

10,240 ft

1 wells filed one

Completion to plug

—

no well filed both dates

What the state filed about each well

On the RRC proration schedule

1100.0%

A plug date is filed

00.0%

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

00.0%

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 10,240 ft.

Completions filed

Aug 1988

1 of 1 wells

1 well


42-17331956	4104	10,240 ft	Aug 1988	—	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 (330)

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

330 months


Jun 2020	0	0	34.90	1.69	$0
May 2020	0	0	16.92	1.81	$0
Apr 2020	0	0	14.75	1.80	$0
Mar 2020	0	0	30.34	1.86	$0
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	233	1,590	55.30	2.75	$17,259
Oct 2019	0	1,696	53.47	2.42	$4,102
Sep 2019	103	1,697	55.05	2.66	$10,180
Aug 2019	0	1,427	53.11	2.30	$3,288
Jul 2019	98	1,414	56.27	2.46	$8,993
Jun 2019	0	1,613	52.78	2.49	$4,018
May 2019	106	1,755	58.48	2.74	$11,008
Apr 2019	0	1,726	62.63	2.75	$4,748
Mar 2019	103	1,798	56.80	3.06	$11,356
Feb 2019	100	1,570	50.85	2.79	$9,469
Jan 2019	102	1,725	46.03	3.23	$10,264
Dec 2018	102	1,818	46.59	4.19	$12,361
Nov 2018	100	1,426	52.93	4.24	$11,335
Oct 2018	0	1,825	61.44	3.40	$6,202
Sep 2018	105	1,904	59.54	3.11	$12,169
Aug 2018	104	1,152	59.40	3.07	$9,710
Jul 2018	0	1,710	65.14	2.93	$5,014
Jun 2018	0	1,896	60.18	3.08	$5,834
May 2018	76	1,920	65.38	2.90	$10,538
Apr 2018	69	1,976	63.84	2.90	$10,137
Mar 2018	70	2,348	61.22	2.79	$10,829
Feb 2018	0	1,895	61.78	2.77	$5,242
Jan 2018	72	2,169	62.87	4.01	$13,223
Dec 2017	71	2,436	57.27	2.92	$11,183
Nov 2017	73	2,445	55.42	3.12	$11,670
Oct 2017	69	2,551	49.29	2.98	$11,012
Sep 2017	0	2,094	47.52	3.09	$6,465
Aug 2017	79	2,213	45.37	3.00	$10,233
Jul 2017	0	1,772	43.87	3.09	$5,471
Jun 2017	89	2,010	42.49	3.09	$9,987
May 2017	0	2,245	45.37	3.26	$7,326
Apr 2017	178	2,298	47.93	3.21	$15,912
Mar 2017	92	1,688	46.77	2.98	$9,339
Feb 2017	98	1,984	50.45	2.95	$10,802
Jan 2017	0	2,374	49.41	3.42	$8,116
Dec 2016	206	1,739	48.76	3.72	$16,519
Nov 2016	0	2,532	42.49	2.64	$6,695
Oct 2016	75	3,029	46.19	3.09	$12,825
Sep 2016	102	2,779	41.55	3.10	$12,855
Aug 2016	171	3,303	41.44	2.92	$16,745
Jul 2016	0	3,241	41.62	2.92	$9,478
Jun 2016	94	3,188	45.35	2.69	$12,825
May 2016	99	3,655	42.52	1.99	$11,487
Apr 2016	0	3,154	36.56	1.99	$6,280
Mar 2016	100	2,884	33.01	1.79	$8,475
Feb 2016	86	3,121	26.47	2.06	$8,717
Jan 2016	195	3,286	27.35	2.36	$13,103
Dec 2015	88	3,372	32.36	2.00	$9,596
Nov 2015	87	3,298	38.79	2.17	$10,523
Oct 2015	86	369	43.55	2.43	$4,641
Sep 2015	0	1,546	42.99	2.76	$4,265
Aug 2015	117	1,813	40.16	2.87	$9,907
Jul 2015	119	3,721	48.15	2.95	$16,688
Jun 2015	89	4,233	56.15	2.88	$17,201
May 2015	77	2,621	55.21	2.96	$11,997
Apr 2015	232	2,625	49.82	2.71	$18,663
Mar 2015	81	2,143	42.89	2.93	$9,763
Feb 2015	87	3,341	44.66	2.98	$13,829
Jan 2015	89	4,218	43.43	3.10	$16,944
Dec 2014	127	2,687	54.69	3.59	$16,596
Nov 2014	40	1,966	70.46	4.25	$11,178
Oct 2014	98	4,891	78.30	3.90	$26,753
Sep 2014	92	4,061	86.16	4.05	$24,355
Aug 2014	0	3,685	89.39	4.04	$14,869
Jul 2014	151	3,136	96.56	4.18	$27,688
Jun 2014	85	3,677	98.16	4.74	$25,761
May 2014	277	4,481	94.73	4.73	$47,420
Apr 2014	0	6,563	95.94	4.81	$31,562
Mar 2014	143	1,885	95.89	5.06	$23,244
Feb 2014	89	5,951	97.40	6.19	$45,517
Jan 2014	90	3,735	90.40	4.86	$26,291
Dec 2013	163	1,713	91.82	4.35	$22,426
Nov 2013	163	2,795	88.85	3.74	$24,931
Oct 2013	231	1,556	97.42	3.78	$28,385
Sep 2013	0	0	104.11	3.72	$0
Aug 2013	142	0	104.25	3.52	$14,804
Jul 2013	111	870	102.52	3.72	$14,614
Jun 2013	163	2,935	94.40	3.93	$26,932
May 2013	136	3,043	94.83	4.15	$25,523
Apr 2013	113	2,423	93.96	4.28	$20,994
Mar 2013	98	504	93.62	3.91	$11,147
Feb 2013	294	1,755	91.23	3.42	$32,824
Jan 2013	115	2,257	91.60	3.42	$18,253
Dec 2012	332	2,623	86.77	3.42	$37,779
Nov 2012	332	2,445	86.95	3.62	$37,730
Oct 2012	106	2,508	89.38	3.40	$18,001
Sep 2012	186	2,501	94.67	2.92	$24,908
Aug 2012	207	2,647	92.66	2.91	$26,879
Jul 2012	200	2,579	85.13	3.02	$24,817
Jun 2012	138	2,513	79.82	2.52	$17,346
May 2012	74	2,425	91.61	2.49	$12,813
Apr 2012	314	2,396	101.65	2.00	$36,702
Mar 2012	83	2,483	105.05	2.22	$14,237
Feb 2012	275	2,152	101.10	2.57	$33,334
Jan 2012	535	2,310	98.09	2.73	$58,794
Dec 2011	113	2,490	96.87	3.24	$19,013
Nov 2011	112	2,405	95.72	3.31	$18,684
Oct 2011	0	2,798	84.98	3.65	$10,209
Sep 2011	224	0	83.62	3.99	$18,731
Aug 2011	223	0	83.40	4.15	$18,598
Jul 2011	0	0	94.14	4.52	$0
Jun 2011	158	0	92.90	4.64	$14,678
May 2011	0	2,285	98.13	4.40	$10,065
Apr 2011	153	2,504	105.96	4.33	$27,062
Mar 2011	0	3,000	96.36	4.06	$12,172
Feb 2011	103	2,786	85.64	4.18	$20,466
Jan 2011	0	2,936	86.50	4.59	$13,473
Dec 2010	177	3,009	85.73	4.35	$28,257
Nov 2010	163	2,919	80.84	3.80	$24,255
Oct 2010	173	3,027	78.10	3.51	$24,133
Sep 2010	360	3,061	72.63	3.98	$38,328
Aug 2010	159	2,928	73.68	4.42	$24,655
Jul 2010	185	3,888	72.55	4.74	$31,837
Jun 2010	163	2,098	70.36	4.91	$21,771
May 2010	168	3,938	71.12	4.24	$28,626
Apr 2010	164	2,287	81.69	4.12	$22,826
Mar 2010	173	3,140	78.39	4.39	$27,342
Feb 2010	177	2,628	73.58	5.44	$27,326
Jan 2010	173	3,234	74.36	5.96	$32,152
Dec 2009	360	2,964	71.44	5.48	$41,972
Nov 2009	171	2,889	74.59	3.75	$23,593
Oct 2009	171	3,022	72.54	4.11	$24,826
Sep 2009	176	2,855	65.54	3.06	$20,285
Aug 2009	174	2,976	67.42	3.22	$21,309
Jul 2009	346	3,088	61.13	3.46	$31,849
Jun 2009	176	3,007	66.16	3.90	$23,356
May 2009	184	3,272	54.74	3.93	$22,917
Apr 2009	174	2,695	46.77	3.59	$17,806
Mar 2009	168	3,166	42.14	4.06	$19,930
Feb 2009	184	2,819	32.81	4.63	$19,097
Jan 2009	360	3,098	35.86	5.37	$29,549
Dec 2008	160	3,089	37.10	5.98	$24,399
Nov 2008	176	3,040	55.49	6.86	$30,622
Oct 2008	174	3,099	75.24	6.92	$34,543
Sep 2008	185	1,908	101.76	7.88	$33,855
Aug 2008	167	3,189	114.22	8.48	$46,127
Jul 2008	349	3,213	131.08	11.39	$82,341
Jun 2008	184	3,128	131.33	13.03	$64,931
May 2008	184	3,194	123.17	11.57	$59,632
Apr 2008	544	3,065	110.31	10.45	$92,053
Mar 2008	0	3,152	101.90	9.66	$30,461
Feb 2008	688	2,944	92.53	8.77	$89,481
Jan 2008	0	3,145	90.38	8.21	$25,807
Dec 2007	0	3,125	88.33	7.30	$22,819
Nov 2007	365	3,102	91.67	7.29	$56,078
Oct 2007	0	3,207	82.85	6.92	$22,199
Sep 2007	357	3,095	75.84	6.24	$46,401
Aug 2007	179	3,142	69.06	6.39	$32,433
Jul 2007	716	3,259	70.90	6.39	$71,583
Jun 2007	300	3,142	62.00	7.55	$42,317
May 2007	325	3,122	58.74	7.85	$43,587
Apr 2007	0	3,058	59.61	7.81	$23,868
Mar 2007	185	3,159	56.92	7.30	$33,597
Feb 2007	360	2,671	55.10	8.22	$41,781
Jan 2007	180	3,052	50.30	6.73	$29,584
Dec 2006	368	3,042	56.65	6.92	$41,893
Nov 2006	361	2,977	54.20	7.62	$42,243
Oct 2006	360	2,992	54.90	6.01	$37,757
Sep 2006	363	2,880	60.08	5.04	$36,316
Aug 2006	360	2,913	68.71	7.34	$46,117
Jul 2006	356	2,702	69.37	6.34	$41,834
Jun 2006	177	1,843	66.28	6.38	$23,497
May 2006	178	2,010	66.01	6.42	$24,664
Apr 2006	175	2,065	64.39	7.36	$26,468
Mar 2006	162	2,124	56.70	7.08	$24,230
Feb 2006	169	1,857	57.59	7.75	$24,127
Jan 2006	361	2,109	60.59	8.93	$40,713
Dec 2005	184	2,098	54.94	13.42	$38,254
Nov 2005	184	2,095	54.69	10.59	$32,246
Oct 2005	182	2,172	58.34	13.80	$40,582
Sep 2005	179	1,836	61.45	12.08	$33,177
Aug 2005	178	2,268	61.51	9.80	$33,168
Jul 2005	176	2,273	55.69	7.84	$27,630
Jun 2005	178	2,185	52.33	7.38	$25,442
May 2005	180	2,212	45.22	6.65	$22,852
Apr 2005	169	2,126	49.20	7.36	$23,963
Mar 2005	359	2,196	50.37	7.15	$33,795
Feb 2005	185	1,979	45.22	6.31	$20,857
Jan 2005	184	2,195	43.16	6.32	$21,819
Dec 2004	183	2,179	39.86	6.75	$22,005
Nov 2004	350	2,247	45.28	6.33	$30,072
Oct 2004	176	2,301	49.70	6.52	$23,738
Sep 2004	181	2,249	43.24	5.28	$19,710
Aug 2004	364	2,341	42.37	5.55	$28,417
Jul 2004	175	2,405	38.28	6.08	$21,331
Jun 2004	183	2,291	36.10	6.43	$21,344
May 2004	179	2,331	37.48	6.49	$21,848
Apr 2004	365	2,400	34.47	5.86	$26,642
Mar 2004	180	2,371	34.36	5.53	$19,297
Feb 2004	369	2,204	32.45	5.51	$24,117
Jan 2004	181	2,360	32.03	6.30	$20,665
Dec 2003	366	2,379	30.26	6.30	$26,067
Nov 2003	181	2,405	28.80	4.60	$16,264
Oct 2003	351	2,491	28.17	4.76	$21,744
Sep 2003	183	2,481	26.31	4.75	$16,598
Aug 2003	360	2,552	29.76	5.13	$23,805
Jul 2003	182	2,548	29.41	5.17	$18,528
Jun 2003	358	2,527	28.56	5.98	$25,343
May 2003	180	2,562	26.59	5.97	$20,088
Apr 2003	179	2,456	26.67	5.41	$18,054
Mar 2003	358	2,534	31.14	6.10	$26,595
Feb 2003	375	2,259	33.48	7.93	$30,460
Jan 2003	365	2,435	30.31	5.58	$24,655
Dec 2002	181	2,359	26.91	4.85	$16,321
Nov 2002	368	2,280	24.66	4.14	$18,507
Oct 2002	357	2,367	26.46	4.23	$19,457
Sep 2002	180	2,343	27.44	3.64	$13,456
Aug 2002	179	2,334	25.96	3.16	$12,032
Jul 2002	362	2,273	24.58	3.06	$15,857
Jun 2002	181	2,067	23.73	3.34	$11,195
May 2002	356	2,383	24.66	3.58	$17,320
Apr 2002	355	2,319	23.65	3.51	$16,541
Mar 2002	182	2,486	22.00	3.10	$11,717
Feb 2002	357	2,195	18.22	2.38	$11,719
Jan 2002	370	2,445	17.17	2.38	$12,161
Dec 2001	361	2,451	16.93	2.36	$11,907
Nov 2001	183	2,442	18.07	2.41	$9,181
Oct 2001	356	2,588	19.78	2.53	$13,586
Sep 2001	540	2,537	24.26	2.25	$18,812
Aug 2001	181	1,355	24.87	3.05	$8,639
Jul 2001	367	2,663	23.93	3.20	$17,296
Jun 2001	176	2,553	24.56	3.82	$14,086
May 2001	365	2,572	25.52	4.31	$20,393
Apr 2001	351	2,502	24.68	5.34	$22,012
Mar 2001	361	2,567	24.54	5.38	$22,660
Feb 2001	350	2,142	27.75	5.77	$22,066
Jan 2001	493	2,560	27.47	8.40	$35,044
Dec 2000	359	2,476	26.88	9.12	$32,237
Nov 2000	341	2,456	32.21	5.66	$24,880
Oct 2000	341	2,599	31.23	5.15	$24,023
Sep 2000	537	2,541	31.87	5.19	$30,293
Aug 2000	346	2,622	29.64	4.54	$22,161
Jul 2000	520	2,638	28.53	4.09	$25,624
Jun 2000	355	2,589	29.30	4.40	$21,786
May 2000	364	2,731	27.26	3.68	$19,972
Apr 2000	355	2,675	24.51	3.12	$17,036
Mar 2000	537	2,749	28.42	2.86	$23,123
Feb 2000	544	2,570	27.62	2.73	$22,032
Jan 2000	368	2,712	25.27	2.48	$16,026
Dec 1999	368	2,687	24.28	2.42	$15,448
Nov 1999	367	2,570	23.19	2.43	$14,766
Oct 1999	545	2,643	20.98	2.80	$18,844
Sep 1999	363	2,592	21.75	2.62	$14,683
Aug 1999	521	2,685	19.26	2.88	$17,755
Jul 1999	531	2,712	17.89	2.37	$15,933
Jun 1999	366	2,517	15.94	2.36	$11,779
May 1999	367	2,562	15.79	2.32	$11,741
Apr 1999	525	2,504	15.10	2.21	$13,456
Mar 1999	555	2,568	12.47	1.84	$11,642
Feb 1999	526	2,419	9.98	1.82	$9,647
Jan 1999	604	2,702	10.38	1.90	$11,403
Dec 1998	377	2,628	9.20	1.77	$8,129
Nov 1998	542	2,676	10.89	2.19	$11,751
Oct 1998	548	2,632	12.42	1.97	$11,989
Sep 1998	518	2,553	12.59	2.08	$11,839
Aug 1998	516	2,575	11.30	1.91	$10,742
Jul 1998	534	2,584	11.74	2.24	$12,050
Jun 1998	517	2,436	11.24	2.24	$11,261
May 1998	722	2,388	12.62	2.21	$14,380
Apr 1998	366	2,221	13.04	2.51	$10,337
Mar 1998	552	2,344	12.80	2.31	$12,479
Feb 1998	550	1,306	13.95	2.30	$10,675
Jan 1998	705	2,436	14.70	2.15	$15,613
Dec 1997	379	2,424	16.32	2.41	$12,030
Nov 1997	702	2,434	18.19	3.09	$20,286
Oct 1997	529	2,141	19.25	3.15	$16,927
Sep 1997	538	2,611	17.74	2.95	$17,259
Aug 1997	698	2,536	17.86	2.55	$18,945
Jul 1997	539	2,114	17.58	2.25	$14,226
Jun 1997	717	2,214	17.24	2.26	$17,359
May 1997	715	2,670	18.97	2.31	$19,727
Apr 1997	528	2,376	17.88	2.08	$14,389
Mar 1997	687	2,565	18.95	1.94	$17,993
Feb 1997	691	2,635	20.49	2.21	$19,971
Jan 1997	892	2,379	23.48	3.54	$29,365
Dec 1996	692	2,441	23.32	—	$16,137
Nov 1996	671	2,593	21.97	—	$14,742
Oct 1996	536	2,663	23.31	—	$12,494
Sep 1996	679	2,608	22.22	—	$15,087
Aug 1996	685	3,098	20.26	—	$13,878
Jul 1996	679	2,522	19.55	—	$13,274
Jun 1996	635	2,580	18.73	—	$11,894
May 1996	1,033	2,570	19.43	—	$20,071
Apr 1996	696	2,500	21.51	—	$14,971
Mar 1996	711	2,549	19.38	—	$13,779
Feb 1996	694	2,228	16.98	—	$11,784
Jan 1996	1,035	2,423	17.07	—	$17,667
Dec 1995	691	2,437	17.19	—	$11,878
Nov 1995	687	2,214	16.00	—	$10,992
Oct 1995	692	2,045	15.43	—	$10,678
Sep 1995	689	1,961	16.18	—	$11,148
Aug 1995	872	2,105	15.92	—	$13,882
Jul 1995	679	2,478	15.24	—	$10,348
Jun 1995	862	2,420	16.41	—	$14,145
May 1995	696	2,448	17.56	—	$12,222
Apr 1995	1,028	2,322	17.73	—	$18,226
Mar 1995	697	2,278	16.44	—	$11,459
Feb 1995	880	1,883	16.58	—	$14,590
Jan 1995	855	2,399	15.92	—	$13,612
Dec 1994	883	2,510	15.03	—	$13,271
Nov 1994	870	2,487	15.90	—	$13,833
Oct 1994	1,008	2,615	15.58	—	$15,705
Sep 1994	527	2,632	15.29	—	$8,058
Aug 1994	1,038	2,808	16.13	—	$16,743
Jul 1994	863	2,797	17.56	—	$15,154
Jun 1994	1,033	2,723	17.09	—	$17,654
May 1994	711	2,875	15.88	—	$11,291
Apr 1994	1,038	2,795	14.14	—	$14,677
Mar 1994	873	2,827	12.46	—	$10,878
Feb 1994	1,032	2,592	12.50	—	$12,900
Jan 1994	1,033	2,883	12.66	—	$13,078
Dec 1993	1,017	2,882	12.33	—	$12,540
Nov 1993	1,051	2,692	14.49	—	$15,229
Oct 1993	1,030	2,976	15.85	—	$16,326
Sep 1993	689	2,776	15.03	—	$10,356
Aug 1993	1,020	2,787	15.66	—	$15,973
Jul 1993	679	2,796	15.46	—	$10,497
Jun 1993	1,368	2,689	16.79	—	$22,969
May 1993	1,052	2,838	17.68	—	$18,599
Apr 1993	879	2,654	18.05	—	$15,866
Mar 1993	1,230	2,731	18.14	—	$22,312
Feb 1993	713	2,375	17.90	—	$12,763
Jan 1993	1,374	2,694	16.93	—	$23,262

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.

Nov 2019 — as filed, then multipliedworked

Oil                  233 bbl  × $ 55.30 =    $12,885
Casinghead gas     1,590 Mcf  × $  2.75 =     $4,374

────────────────────────────────────────────────────
Month total                                  $17,259

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/31899 is the state's own key, not one this site invented.