DUFF, A. H. ESTATE

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

Operated by TREK RESOURCES, INC. (P-5 867578) in the DOVE CREEK (CANYON -D-) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Gas lease lease 83184District 7CField 25930426NGPA filingCondensateGasSave Export

Value, all time

$702 k

Jan 1993 – Aug 2022

Value, last 12 filed months

$5 k

at the published price for each month

Months reported

356

no gaps in the span

Streams

condensate, gas

The DOVE CREEK (CANYON -D-) 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 72 leases and 121 wells, and the rule below applies to all of them.

Discovered

1965-06-18

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 40 acres.

The Commission's schedule remark for this field reads: “CONSOLIDATED) FIELD EFFECTIVE 03/01/2026.”

Severance-tax incentive filings

Applications the operator filed to have this lease's gas taxed at a reduced state rate. A filing is an application, and this page never calls one a reduction that was granted.

Programme	Filings	With an approval date	Dated	Docket
NGPA	2	none	—	—

This says nothing about a royalty. A severance tax is charged to the operator. Whether a reduced rate reaches a royalty owner depends on the wording of the lease instrument, which is a private contract this site does not hold.

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
Condensate	Disposition	2,747 bbl	$190,357
Gas	Production	131,361 Mcf	$511,331
Total			$701,688

8,468 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 31.1034, -100.6796. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.0 miles.

31.10336, -100.67965 · 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

7,650 ft

1 wells filed one

Completion to plug

43.3 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 7,650 ft.

Completions filed

Jun 1979

1 of 1 wells

Plug dates filed

Sep 2022

1 of 1 wells

Last completion to plug: a median of 43.3 years across the 1 well that filed both dates, with the middle half between 43.3 years and 43.3 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

1 well


42-45130465	1	7,650 ft	Jun 1979	Sep 2022	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 (356)

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

356 months


Aug 2022	0	0	94.52	9.13	$0
Jul 2022	0	0	101.58	7.54	$0
Jun 2022	0	0	115.09	7.98	$0
May 2022	0	0	109.37	8.43	$0
Apr 2022	19	0	104.22	6.84	$1,980
Mar 2022	0	0	108.88	5.08	$0
Feb 2022	0	0	91.05	4.86	$0
Jan 2022	36	0	81.84	4.54	$2,946
Dec 2021	0	0	71.32	3.90	$0
Nov 2021	0	0	77.43	5.24	$0
Oct 2021	0	0	79.79	5.71	$0
Sep 2021	0	0	69.86	5.35	$0
Aug 2021	18	0	66.02	4.22	$1,188
Jul 2021	0	0	70.78	3.98	$0
Jun 2021	18	0	69.49	3.38	$1,251
May 2021	0	0	63.48	3.02	$0
Apr 2021	0	0	60.36	2.76	$0
Mar 2021	0	0	61.30	2.72	$0
Feb 2021	0	0	57.80	5.55	$0
Jan 2021	18	0	50.41	2.81	$907
Dec 2020	0	7	44.64	2.68	$19
Nov 2020	17	10	38.77	2.71	$686
Oct 2020	0	55	36.97	2.48	$136
Sep 2020	0	134	37.09	1.99	$267
Aug 2020	18	132	39.98	2.39	$1,034
Jul 2020	0	90	38.37	1.83	$164
Jun 2020	18	92	34.90	1.69	$784
May 2020	0	103	16.92	1.81	$187
Apr 2020	0	157	14.75	1.80	$283
Mar 2020	18	182	30.34	1.86	$884
Feb 2020	0	170	49.88	1.98	$337
Jan 2020	0	197	57.25	2.09	$413
Dec 2019	18	173	59.01	2.30	$1,461
Nov 2019	0	154	55.30	2.75	$424
Oct 2019	18	85	53.47	2.42	$1,168
Sep 2019	0	157	55.05	2.66	$417
Aug 2019	0	126	53.11	2.30	$290
Jul 2019	18	182	56.27	2.46	$1,461
Jun 2019	0	121	52.78	2.49	$301
May 2019	18	71	58.48	2.74	$1,247
Apr 2019	0	165	62.63	2.75	$454
Mar 2019	0	180	56.80	3.06	$551
Feb 2019	0	175	50.85	2.79	$489
Jan 2019	18	162	46.03	3.23	$1,352
Dec 2018	18	182	46.59	4.19	$1,600
Nov 2018	0	123	52.93	4.24	$521
Oct 2018	0	90	61.44	3.40	$306
Sep 2018	0	132	59.54	3.11	$410
Aug 2018	0	126	59.40	3.07	$386
Jul 2018	17	183	65.14	2.93	$1,644
Jun 2018	0	170	60.18	3.08	$523
May 2018	18	133	65.38	2.90	$1,563
Apr 2018	0	146	63.84	2.90	$424
Mar 2018	0	96	61.22	2.79	$268
Feb 2018	0	129	61.78	2.77	$357
Jan 2018	18	228	62.87	4.01	$2,046
Dec 2017	0	223	57.27	2.92	$652
Nov 2017	18	227	55.42	3.12	$1,705
Oct 2017	0	214	49.29	2.98	$639
Sep 2017	0	195	47.52	3.09	$602
Aug 2017	18	235	45.37	3.00	$1,523
Jul 2017	0	265	43.87	3.09	$818
Jun 2017	0	251	42.49	3.09	$775
May 2017	17	205	45.37	3.26	$1,440
Apr 2017	18	228	47.93	3.21	$1,595
Mar 2017	0	237	46.77	2.98	$707
Feb 2017	0	195	50.45	2.95	$576
Jan 2017	17	244	49.41	3.42	$1,674
Dec 2016	0	234	48.76	3.72	$871
Nov 2016	0	245	42.49	2.64	$648
Oct 2016	18	271	46.19	3.09	$1,669
Sep 2016	18	227	41.55	3.10	$1,452
Aug 2016	0	275	41.44	2.92	$804
Jul 2016	0	280	41.62	2.92	$819
Jun 2016	18	289	45.35	2.69	$1,593
May 2016	0	268	42.52	1.99	$534
Apr 2016	0	257	36.56	1.99	$512
Mar 2016	0	279	33.01	1.79	$501
Feb 2016	18	234	26.47	2.06	$959
Jan 2016	18	251	27.35	2.36	$1,086
Dec 2015	0	293	32.36	2.00	$586
Nov 2015	0	282	38.79	2.17	$611
Oct 2015	0	309	43.55	2.43	$750
Sep 2015	17	289	42.99	2.76	$1,528
Aug 2015	0	310	40.16	2.87	$890
Jul 2015	18	323	48.15	2.95	$1,818
Jun 2015	0	297	56.15	2.88	$856
May 2015	18	255	55.21	2.96	$1,747
Apr 2015	0	253	49.82	2.71	$685
Mar 2015	24	256	42.89	2.93	$1,781
Feb 2015	0	246	44.66	2.98	$732
Jan 2015	0	275	43.43	3.10	$853
Dec 2014	18	311	54.69	3.59	$2,101
Nov 2014	0	270	70.46	4.25	$1,148
Oct 2014	19	277	78.30	3.90	$2,568
Sep 2014	0	348	86.16	4.05	$1,408
Aug 2014	19	346	89.39	4.04	$3,095
Jul 2014	18	358	96.56	4.18	$3,234
Jun 2014	0	367	98.16	4.74	$1,738
May 2014	19	400	94.73	4.73	$3,690
Apr 2014	25	395	95.94	4.81	$4,298
Mar 2014	0	267	95.89	5.06	$1,350
Feb 2014	19	447	97.40	6.19	$4,618
Jan 2014	57	410	90.40	4.86	$7,146
Dec 2013	0	192	91.82	4.35	$836
Nov 2013	0	211	88.85	3.74	$789
Oct 2013	31	247	97.42	3.78	$3,954
Sep 2013	23	272	104.11	3.72	$3,406
Aug 2013	0	293	104.25	3.52	$1,032
Jul 2013	23	292	102.52	3.72	$3,444
Jun 2013	0	222	94.40	3.93	$873
May 2013	0	326	94.83	4.15	$1,353
Apr 2013	23	352	93.96	4.28	$3,669
Mar 2013	0	344	93.62	3.91	$1,346
Feb 2013	19	265	91.23	3.42	$2,640
Jan 2013	0	310	91.60	3.42	$1,060
Dec 2012	88	347	86.77	3.42	$8,823
Nov 2012	50	332	86.95	3.62	$5,551
Oct 2012	93	317	89.38	3.40	$9,390
Sep 2012	0	211	94.67	2.92	$616
Aug 2012	22	285	92.66	2.91	$2,867
Jul 2012	31	109	85.13	3.02	$2,968
Jun 2012	0	325	79.82	2.52	$819
May 2012	19	306	91.61	2.49	$2,502
Apr 2012	19	326	101.65	2.00	$2,582
Mar 2012	0	341	105.05	2.22	$758
Feb 2012	32	251	101.10	2.57	$3,880
Jan 2012	0	371	98.09	2.73	$1,014
Dec 2011	28	414	96.87	3.24	$4,054
Nov 2011	0	230	95.72	3.31	$762
Oct 2011	18	245	84.98	3.65	$2,424
Sep 2011	18	248	83.62	3.99	$2,494
Aug 2011	18	299	83.40	4.15	$2,742
Jul 2011	0	330	94.14	4.52	$1,491
Jun 2011	15	276	92.90	4.64	$2,674
May 2011	0	287	98.13	4.40	$1,264
Apr 2011	18	215	105.96	4.33	$2,839
Mar 2011	0	256	96.36	4.06	$1,039
Feb 2011	0	199	85.64	4.18	$832
Jan 2011	16	274	86.50	4.59	$2,641
Dec 2010	27	301	85.73	4.35	$3,623
Nov 2010	0	143	80.84	3.80	$543
Oct 2010	26	283	78.10	3.51	$3,024
Sep 2010	0	300	72.63	3.98	$1,194
Aug 2010	26	290	73.68	4.42	$3,197
Jul 2010	0	158	72.55	4.74	$748
Jun 2010	0	43	70.36	4.91	$211
May 2010	19	235	71.12	4.24	$2,347
Apr 2010	0	250	81.69	4.12	$1,031
Mar 2010	19	251	78.39	4.39	$2,591
Feb 2010	0	267	73.58	5.44	$1,453
Jan 2010	23	289	74.36	5.96	$3,434
Dec 2009	0	272	71.44	5.48	$1,492
Nov 2009	30	309	74.59	3.75	$3,397
Oct 2009	19	290	72.54	4.11	$2,570
Sep 2009	0	250	65.54	3.06	$766
Aug 2009	29	277	67.42	3.22	$2,847
Jul 2009	0	284	61.13	3.46	$984
Jun 2009	23	314	66.16	3.90	$2,745
May 2009	44	358	54.74	3.93	$3,814
Apr 2009	0	216	46.77	3.59	$775
Mar 2009	24	281	42.14	4.06	$2,152
Feb 2009	0	341	32.81	4.63	$1,580
Jan 2009	18	250	35.86	5.37	$1,988
Dec 2008	18	173	37.10	5.98	$1,702
Nov 2008	0	203	55.49	6.86	$1,393
Oct 2008	29	266	75.24	6.92	$4,023
Sep 2008	0	246	101.76	7.88	$1,938
Aug 2008	31	338	114.22	8.48	$6,408
Jul 2008	31	308	131.08	11.39	$7,571
Jun 2008	38	323	131.33	13.03	$9,200
May 2008	0	291	123.17	11.57	$3,368
Apr 2008	18	254	110.31	10.45	$4,641
Mar 2008	31	387	101.90	9.66	$6,899
Feb 2008	0	461	92.53	8.77	$4,043
Jan 2008	18	234	90.38	8.21	$3,547
Dec 2007	13	254	88.33	7.30	$3,003
Nov 2007	0	468	91.67	7.29	$3,413
Oct 2007	30	544	82.85	6.92	$6,251
Sep 2007	32	568	75.84	6.24	$5,974
Aug 2007	19	383	69.06	6.39	$3,759
Jul 2007	0	341	70.90	6.39	$2,178
Jun 2007	37	337	62.00	7.55	$4,838
May 2007	0	307	58.74	7.85	$2,409
Apr 2007	0	290	59.61	7.81	$2,264
Mar 2007	18	366	56.92	7.30	$3,697
Feb 2007	19	318	55.10	8.22	$3,660
Jan 2007	19	307	50.30	6.73	$3,021
Dec 2006	16	443	56.65	6.92	$3,971
Nov 2006	27	413	54.20	7.62	$4,609
Oct 2006	64	657	54.90	6.01	$7,465
Sep 2006	0	0	60.08	5.04	$0
Aug 2006	0	0	68.71	7.34	$0
Jul 2006	0	108	69.37	6.34	$685
Jun 2006	0	279	66.28	6.38	$1,781
May 2006	16	309	66.01	6.42	$3,041
Apr 2006	16	358	64.39	7.36	$3,665
Mar 2006	15	305	56.70	7.08	$3,011
Feb 2006	17	316	57.59	7.75	$3,428
Jan 2006	18	333	60.59	8.93	$4,065
Dec 2005	16	432	54.94	13.42	$6,674
Nov 2005	30	372	54.69	10.59	$5,580
Oct 2005	27	388	58.34	13.80	$6,928
Sep 2005	0	0	61.45	12.08	$0
Aug 2005	0	0	61.51	9.80	$0
Jul 2005	0	109	55.69	7.84	$855
Jun 2005	16	320	52.33	7.38	$3,199
May 2005	15	336	45.22	6.65	$2,913
Apr 2005	16	282	49.20	7.36	$2,863
Mar 2005	17	368	50.37	7.15	$3,489
Feb 2005	18	225	45.22	6.31	$2,234
Jan 2005	18	380	43.16	6.32	$3,179
Dec 2004	15	451	39.86	6.75	$3,643
Nov 2004	28	412	45.28	6.33	$3,876
Oct 2004	0	0	49.70	6.52	$0
Sep 2004	16	339	43.24	5.28	$2,483
Aug 2004	38	362	42.37	5.55	$3,619
Jul 2004	4	432	38.28	6.08	$2,781
Jun 2004	16	423	36.10	6.43	$3,299
May 2004	30	494	37.48	6.49	$4,333
Apr 2004	32	483	34.47	5.86	$3,933
Mar 2004	18	394	34.36	5.53	$2,797
Feb 2004	48	292	32.45	5.51	$3,166
Jan 2004	18	419	32.03	6.30	$3,216
Dec 2003	0	775	30.26	6.30	$4,884
Nov 2003	0	750	28.80	4.60	$3,446
Oct 2003	0	775	28.17	4.76	$3,689
Sep 2003	0	775	26.31	4.75	$3,681
Aug 2003	0	775	29.76	5.13	$3,976
Jul 2003	0	775	29.41	5.17	$4,007
Jun 2003	0	750	28.56	5.98	$4,487
May 2003	0	775	26.59	5.97	$4,629
Apr 2003	0	750	26.67	5.41	$4,055
Mar 2003	0	775	31.14	6.10	$4,724
Feb 2003	0	701	33.48	7.93	$5,556
Jan 2003	0	775	30.31	5.58	$4,326
Dec 2002	0	775	26.91	4.85	$3,762
Nov 2002	0	750	24.66	4.14	$3,103
Oct 2002	0	775	26.46	4.23	$3,278
Sep 2002	0	751	27.44	3.64	$2,730
Aug 2002	0	775	25.96	3.16	$2,452
Jul 2002	0	775	24.58	3.06	$2,373
Jun 2002	0	750	23.73	3.34	$2,504
May 2002	0	775	24.66	3.58	$2,778
Apr 2002	0	750	23.65	3.51	$2,634
Mar 2002	0	775	22.00	3.10	$2,405
Feb 2002	0	700	18.22	2.38	$1,663
Jan 2002	0	775	17.17	2.38	$1,841
Dec 2001	0	775	16.93	2.36	$1,832
Nov 2001	0	750	18.07	2.41	$1,804
Oct 2001	0	750	19.78	2.53	$1,897
Sep 2001	0	1,050	24.26	2.25	$2,364
Aug 2001	0	1,085	24.87	3.05	$3,313
Jul 2001	0	1,085	23.93	3.20	$3,469
Jun 2001	0	150	24.56	3.82	$574
May 2001	0	651	25.52	4.31	$2,804
Apr 2001	0	630	24.68	5.34	$3,361
Mar 2001	0	1,085	24.54	5.38	$5,833
Feb 2001	0	980	27.75	5.77	$5,652
Jan 2001	0	1,085	27.47	8.40	$9,113
Dec 2000	0	1,085	26.88	9.12	$9,898
Nov 2000	0	1,050	32.21	5.66	$5,941
Oct 2000	0	1,050	31.23	5.15	$5,403
Sep 2000	0	1,050	31.87	5.19	$5,446
Aug 2000	0	1,085	29.64	4.54	$4,927
Jul 2000	0	1,085	28.53	4.09	$4,437
Jun 2000	0	1,170	29.30	4.40	$5,145
May 2000	0	1,209	27.26	3.68	$4,449
Apr 2000	0	1,240	24.51	3.12	$3,864
Mar 2000	0	1,240	28.42	2.86	$3,546
Feb 2000	0	1,131	27.62	2.73	$3,084
Jan 2000	0	1,209	25.27	2.48	$2,999
Dec 1999	0	1,209	24.28	2.42	$2,930
Nov 1999	0	1,170	23.19	2.43	$2,848
Oct 1999	0	1,209	20.98	2.80	$3,390
Sep 1999	0	1,470	21.75	2.62	$3,850
Aug 1999	0	1,519	19.26	2.88	$4,368
Jul 1999	0	1,519	17.89	2.37	$3,604
Jun 1999	0	1,470	15.94	2.36	$3,472
May 1999	0	1,519	15.79	2.32	$3,526
Apr 1999	0	1,470	15.10	2.21	$3,246
Mar 1999	0	1,519	12.47	1.84	$2,792
Feb 1999	0	1,372	9.98	1.82	$2,494
Jan 1999	0	1,440	10.38	1.90	$2,736
Dec 1998	0	1,240	9.20	1.77	$2,199
Nov 1998	0	1,600	10.89	2.19	$3,497
Oct 1998	0	1,650	12.42	1.97	$3,249
Sep 1998	0	1,200	12.59	2.08	$2,499
Aug 1998	0	1,200	11.30	1.91	$2,289
Jul 1998	0	0	11.74	2.24	$0
Jun 1998	0	752	11.24	2.24	$1,682
May 1998	0	179	12.62	2.21	$395
Apr 1998	0	147	13.04	2.51	$368
Mar 1998	0	120	12.80	2.31	$277
Feb 1998	0	121	13.95	2.30	$278
Jan 1998	0	103	14.70	2.15	$222
Dec 1997	0	105	16.32	2.41	$253
Nov 1997	0	105	18.19	3.09	$324
Oct 1997	0	134	19.25	3.15	$422
Sep 1997	0	124	17.74	2.95	$366
Aug 1997	0	169	17.86	2.55	$432
Jul 1997	0	131	17.58	2.25	$294
Jun 1997	0	165	17.24	2.26	$372
May 1997	0	168	18.97	2.31	$388
Apr 1997	0	147	17.88	2.08	$306
Mar 1997	0	289	18.95	1.94	$560
Feb 1997	0	156	20.49	2.21	$344
Jan 1997	0	241	23.48	3.54	$853
Dec 1996	0	296	23.32	—	$0
Nov 1996	0	741	21.97	—	$0
Oct 1996	0	633	23.31	—	$0
Sep 1996	0	1,108	22.22	—	$0
Aug 1996	0	635	20.26	—	$0
Jul 1996	0	274	19.55	—	$0
Jun 1996	0	41	18.73	—	$0
May 1996	0	73	19.43	—	$0
Apr 1996	0	98	21.51	—	$0
Mar 1996	0	1,339	19.38	—	$0
Feb 1996	0	1,818	16.98	—	$0
Jan 1996	0	0	17.07	—	$0
Dec 1995	0	0	17.19	—	$0
Nov 1995	0	31	16.00	—	$0
Oct 1995	0	73	15.43	—	$0
Sep 1995	0	59	16.18	—	$0
Aug 1995	0	52	15.92	—	$0
Jul 1995	0	40	15.24	—	$0
Jun 1995	0	34	16.41	—	$0
May 1995	0	32	17.56	—	$0
Apr 1995	0	32	17.73	—	$0
Mar 1995	0	34	16.44	—	$0
Feb 1995	0	30	16.58	—	$0
Jan 1995	0	43	15.92	—	$0
Dec 1994	0	34	15.03	—	$0
Nov 1994	0	30	15.90	—	$0
Oct 1994	0	47	15.58	—	$0
Sep 1994	0	32	15.29	—	$0
Aug 1994	0	44	16.13	—	$0
Jul 1994	0	40	17.56	—	$0
Jun 1994	0	45	17.09	—	$0
May 1994	0	38	15.88	—	$0
Apr 1994	0	38	14.14	—	$0
Mar 1994	0	35	12.46	—	$0
Feb 1994	0	34	12.50	—	$0
Jan 1994	0	38	12.66	—	$0
Dec 1993	0	41	12.33	—	$0
Nov 1993	0	43	14.49	—	$0
Oct 1993	0	45	15.85	—	$0
Sep 1993	0	46	15.03	—	$0
Aug 1993	0	46	15.66	—	$0
Jul 1993	0	40	15.46	—	$0
Jun 1993	0	42	16.79	—	$0
May 1993	0	33	17.68	—	$0
Apr 1993	0	38	18.05	—	$0
Mar 1993	0	37	18.14	—	$0
Feb 1993	0	40	17.90	—	$0
Jan 1993	0	46	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.

Apr 2022 — as filed, then multipliedworked

Condensate            19 bbl  × $104.22 =     $1,980
Gas                    0 Mcf  × $  6.84 =         $0

────────────────────────────────────────────────────
Month total                                   $1,980

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. 7C/G/83184 is the state's own key, not one this site invented.