CHALK "A"

Name: CHALK "A" 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 HOWARD GLASSCOCK field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 24512District 08Field 42971001Hydrogen sulphide fieldOilCasinghead gasSave Export

Value, all time

$2.9 M

Jan 1993 – Aug 2012

Value, last 12 filed months

$84 k

at the published price for each month

Months reported

236

no gaps in the span

Streams

oil, casinghead gas

The HOWARD GLASSCOCK 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 285 leases and 3,948 wells, and the rule below applies to all of them.

Discovered

1925-12-31

as the register files it

Field class

Oil

the register's own label

Between wells

400 ft

minimum

From a lease line

200 ft

minimum

A drilling unit in this field needs at least 5 acres. The field rule took effect on 2008-07-28.

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: “HOWARD GLASSCOCK (CONSOLIDATED), EFFECTIVE 11/22/11.”

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	86,515 bbl	$2,845,676
Casinghead gas	Production	8,850 Mcf	$40,015
Total			$2,885,691

21 Mcf of this lease's gas, across 21 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 (7)

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 32.1397, -101.2365. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.4 miles.

32.13977, -101.23627 · 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%

7 of 7 wells

With a plug date

42.9%

3 of 7 wells

Median depth

3,018 ft

7 wells filed one

Completion to plug

37.2 years

median over 3 wells

What the state filed about each well

On the RRC proration schedule

7100.0%

A plug date is filed

342.9%

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

342.9%

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 2,990 and 3,626 ft, median 3,018 ft, over the 7 wells that filed a depth.

Completions filed

Mar 1977 – Apr 1978

7 of 7 wells

Plug dates filed

Sep 1997 – Feb 2023

3 of 7 wells; 4 filed none

Last completion to plug: a median of 37.2 years across the 3 wells that filed both dates, with the middle half between 28.3 years and 41.4 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

7 wells


42-22702535	1	3,018 ft	Apr 1978	—	Yes
42-22702537	2	3,050 ft	Mar 1978	Sep 1997	Yes
42-22702539	3	2,990 ft	Mar 1978	—	Yes
42-22731502	8	3,020 ft	Nov 1977	—	Yes
42-22731216	7	3,010 ft	Jul 1977	Feb 2023	Yes
42-22731139	6	3,010 ft	Apr 1977	Jun 2014	Yes
42-22731138	5	3,626 ft	Mar 1977	—	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 (236)

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

236 months


Aug 2012	0	0	92.66	2.91	$0
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	473	0	95.72	3.31	$45,276
Oct 2011	461	0	84.98	3.65	$39,176
Sep 2011	0	0	83.62	3.99	$0
Aug 2011	0	0	83.40	4.15	$0
Jul 2011	433	0	94.14	4.52	$40,763
Jun 2011	458	0	92.90	4.64	$42,548
May 2011	0	0	98.13	4.40	$0
Apr 2011	0	0	105.96	4.33	$0
Mar 2011	453	0	96.36	4.06	$43,651
Feb 2011	0	0	85.64	4.18	$0
Jan 2011	450	0	86.50	4.59	$38,925
Dec 2010	0	0	85.73	4.35	$0
Nov 2010	437	0	80.84	3.80	$35,327
Oct 2010	0	0	78.10	3.51	$0
Sep 2010	437	0	72.63	3.98	$31,739
Aug 2010	0	0	73.68	4.42	$0
Jul 2010	447	0	72.55	4.74	$32,430
Jun 2010	0	0	70.36	4.91	$0
May 2010	435	0	71.12	4.24	$30,937
Apr 2010	0	0	81.69	4.12	$0
Mar 2010	464	0	78.39	4.39	$36,373
Feb 2010	0	0	73.58	5.44	$0
Jan 2010	472	0	74.36	5.96	$35,098
Dec 2009	0	0	71.44	5.48	$0
Nov 2009	458	0	74.59	3.75	$34,162
Oct 2009	0	0	72.54	4.11	$0
Sep 2009	467	0	65.54	3.06	$30,607
Aug 2009	0	0	67.42	3.22	$0
Jul 2009	459	0	61.13	3.46	$28,059
Jun 2009	0	0	66.16	3.90	$0
May 2009	460	0	54.74	3.93	$25,180
Apr 2009	470	0	46.77	3.59	$21,982
Mar 2009	0	0	42.14	4.06	$0
Feb 2009	457	0	32.81	4.63	$14,994
Jan 2009	0	0	35.86	5.37	$0
Dec 2008	456	0	37.10	5.98	$16,918
Nov 2008	0	0	55.49	6.86	$0
Oct 2008	0	0	75.24	6.92	$0
Sep 2008	464	0	101.76	7.88	$47,217
Aug 2008	454	0	114.22	8.48	$51,856
Jul 2008	0	0	131.08	11.39	$0
Jun 2008	0	0	131.33	13.03	$0
May 2008	0	0	123.17	11.57	$0
Apr 2008	397	0	110.31	10.45	$43,793
Mar 2008	0	0	101.90	9.66	$0
Feb 2008	0	0	92.53	8.77	$0
Jan 2008	438	0	90.38	8.21	$39,586
Dec 2007	0	0	88.33	7.30	$0
Nov 2007	460	0	91.67	7.29	$42,168
Oct 2007	0	0	82.85	6.92	$0
Sep 2007	438	0	75.84	6.24	$33,218
Aug 2007	458	0	69.06	6.39	$31,629
Jul 2007	0	0	70.90	6.39	$0
Jun 2007	471	0	62.00	7.55	$29,202
May 2007	464	0	58.74	7.85	$27,255
Apr 2007	0	0	59.61	7.81	$0
Mar 2007	394	0	56.92	7.30	$22,426
Feb 2007	456	0	55.10	8.22	$25,126
Jan 2007	452	0	50.30	6.73	$22,736
Dec 2006	0	0	56.65	6.92	$0
Nov 2006	358	0	54.20	7.62	$19,404
Oct 2006	435	0	54.90	6.01	$23,882
Sep 2006	455	0	60.08	5.04	$27,336
Aug 2006	121	0	68.71	7.34	$8,314
Jul 2006	261	0	69.37	6.34	$18,106
Jun 2006	337	0	66.28	6.38	$22,336
May 2006	313	0	66.01	6.42	$20,661
Apr 2006	286	0	64.39	7.36	$18,416
Mar 2006	368	0	56.70	7.08	$20,866
Feb 2006	318	0	57.59	7.75	$18,314
Jan 2006	358	0	60.59	8.93	$21,691
Dec 2005	351	0	54.94	13.42	$19,284
Nov 2005	387	0	54.69	10.59	$21,165
Oct 2005	346	0	58.34	13.80	$20,186
Sep 2005	353	0	61.45	12.08	$21,692
Aug 2005	415	0	61.51	9.80	$25,527
Jul 2005	329	0	55.69	7.84	$18,322
Jun 2005	352	0	52.33	7.38	$18,420
May 2005	405	0	45.22	6.65	$18,314
Apr 2005	424	0	49.20	7.36	$20,861
Mar 2005	403	0	50.37	7.15	$20,299
Feb 2005	270	0	45.22	6.31	$12,209
Jan 2005	373	0	43.16	6.32	$16,099
Dec 2004	296	0	39.86	6.75	$11,799
Nov 2004	366	0	45.28	6.33	$16,572
Oct 2004	304	0	49.70	6.52	$15,109
Sep 2004	301	0	43.24	5.28	$13,015
Aug 2004	421	0	42.37	5.55	$17,838
Jul 2004	385	155	38.28	6.08	$15,681
Jun 2004	334	150	36.10	6.43	$13,022
May 2004	345	155	37.48	6.49	$13,937
Apr 2004	372	150	34.47	5.86	$13,702
Mar 2004	444	155	34.36	5.53	$16,113
Feb 2004	393	203	32.45	5.51	$13,871
Jan 2004	425	155	32.03	6.30	$14,589
Dec 2003	418	155	30.26	6.30	$13,625
Nov 2003	412	150	28.80	4.60	$12,555
Oct 2003	431	155	28.17	4.76	$12,879
Sep 2003	857	180	26.31	4.75	$23,403
Aug 2003	0	155	29.76	5.13	$795
Jul 2003	422	217	29.41	5.17	$13,533
Jun 2003	423	150	28.56	5.98	$12,978
May 2003	412	155	26.59	5.97	$11,881
Apr 2003	433	150	26.67	5.41	$12,359
Mar 2003	403	155	31.14	6.10	$13,494
Feb 2003	415	140	33.48	7.93	$15,004
Jan 2003	418	155	30.31	5.58	$13,535
Dec 2002	368	155	26.91	4.85	$10,655
Nov 2002	413	150	24.66	4.14	$10,805
Oct 2002	312	155	26.46	4.23	$8,911
Sep 2002	379	150	27.44	3.64	$10,945
Aug 2002	414	155	25.96	3.16	$11,238
Jul 2002	422	155	24.58	3.06	$10,847
Jun 2002	433	150	23.73	3.34	$10,776
May 2002	413	155	24.66	3.58	$10,740
Apr 2002	402	150	23.65	3.51	$10,034
Mar 2002	419	155	22.00	3.10	$9,699
Feb 2002	422	140	18.22	2.38	$8,021
Jan 2002	410	155	17.17	2.38	$7,408
Dec 2001	421	155	16.93	2.36	$7,494
Nov 2001	415	150	18.07	2.41	$7,860
Oct 2001	427	155	19.78	2.53	$8,838
Sep 2001	418	180	24.26	2.25	$10,546
Aug 2001	419	155	24.87	3.05	$10,894
Jul 2001	434	155	23.93	3.20	$10,881
Jun 2001	430	150	24.56	3.82	$11,134
May 2001	433	155	25.52	4.31	$11,718
Apr 2001	382	150	24.68	5.34	$10,228
Mar 2001	425	155	24.54	5.38	$11,263
Feb 2001	396	140	27.75	5.77	$11,796
Jan 2001	425	155	27.47	8.40	$12,977
Dec 2000	412	155	26.88	9.12	$12,489
Nov 2000	406	120	32.21	5.66	$13,756
Oct 2000	435	126	31.23	5.15	$14,233
Sep 2000	415	120	31.87	5.19	$13,848
Aug 2000	382	186	29.64	4.54	$12,167
Jul 2000	404	186	28.53	4.09	$12,287
Jun 2000	392	180	29.30	4.40	$12,277
May 2000	392	186	27.26	3.68	$11,370
Apr 2000	418	180	24.51	3.12	$10,806
Mar 2000	437	155	28.42	2.86	$12,863
Feb 2000	445	174	27.62	2.73	$12,765
Jan 2000	460	155	25.27	2.48	$12,009
Dec 1999	462	186	24.28	2.42	$11,668
Nov 1999	445	0	23.19	2.43	$10,320
Oct 1999	419	0	20.98	2.80	$8,791
Sep 1999	424	0	21.75	2.62	$9,222
Aug 1999	395	0	19.26	2.88	$7,608
Jul 1999	421	0	17.89	2.37	$7,532
Jun 1999	413	0	15.94	2.36	$6,583
May 1999	421	0	15.79	2.32	$6,648
Apr 1999	414	0	15.10	2.21	$6,251
Mar 1999	422	0	12.47	1.84	$5,262
Feb 1999	412	0	9.98	1.82	$4,112
Jan 1999	452	0	10.38	1.90	$4,692
Dec 1998	447	0	9.20	1.77	$4,112
Nov 1998	367	0	10.89	2.19	$3,997
Oct 1998	453	0	12.42	1.97	$5,626
Sep 1998	473	0	12.59	2.08	$5,955
Aug 1998	477	0	11.30	1.91	$5,390
Jul 1998	0	0	11.74	2.24	$0
Jun 1998	448	0	11.24	2.24	$5,036
May 1998	375	0	12.62	2.21	$4,733
Apr 1998	437	0	13.04	2.51	$5,698
Mar 1998	436	0	12.80	2.31	$5,581
Feb 1998	419	0	13.95	2.30	$5,845
Jan 1998	465	0	14.70	2.15	$6,836
Dec 1997	415	0	16.32	2.41	$6,773
Nov 1997	426	0	18.19	3.09	$7,749
Oct 1997	467	0	19.25	3.15	$8,990
Sep 1997	429	0	17.74	2.95	$7,610
Aug 1997	397	0	17.86	2.55	$7,090
Jul 1997	469	0	17.58	2.25	$8,245
Jun 1997	398	0	17.24	2.26	$6,862
May 1997	430	0	18.97	2.31	$8,157
Apr 1997	436	0	17.88	2.08	$7,796
Mar 1997	408	0	18.95	1.94	$7,732
Feb 1997	354	0	20.49	2.21	$7,253
Jan 1997	440	0	23.48	3.54	$10,331
Dec 1996	479	0	23.32	—	$11,170
Nov 1996	376	0	21.97	—	$8,261
Oct 1996	467	0	23.31	—	$10,886
Sep 1996	422	0	22.22	—	$9,377
Aug 1996	437	0	20.26	—	$8,854
Jul 1996	474	0	19.55	—	$9,267
Jun 1996	446	0	18.73	—	$8,354
May 1996	438	0	19.43	—	$8,510
Apr 1996	438	0	21.51	—	$9,421
Mar 1996	456	0	19.38	—	$8,837
Feb 1996	471	0	16.98	—	$7,998
Jan 1996	478	0	17.07	—	$8,159
Dec 1995	472	0	17.19	—	$8,114
Nov 1995	478	0	16.00	—	$7,648
Oct 1995	477	0	15.43	—	$7,360
Sep 1995	482	0	16.18	—	$7,799
Aug 1995	472	0	15.92	—	$7,514
Jul 1995	454	0	15.24	—	$6,919
Jun 1995	472	0	16.41	—	$7,746
May 1995	465	0	17.56	—	$8,165
Apr 1995	471	0	17.73	—	$8,351
Mar 1995	441	0	16.44	—	$7,250
Feb 1995	434	0	16.58	—	$7,196
Jan 1995	590	0	15.92	—	$9,393
Dec 1994	580	0	15.03	—	$8,717
Nov 1994	601	0	15.90	—	$9,556
Oct 1994	621	0	15.58	—	$9,675
Sep 1994	601	1	15.29	—	$9,189
Aug 1994	618	1	16.13	—	$9,968
Jul 1994	619	1	17.56	—	$10,870
Jun 1994	601	1	17.09	—	$10,271
May 1994	620	1	15.88	—	$9,846
Apr 1994	602	1	14.14	—	$8,512
Mar 1994	610	1	12.46	—	$7,601
Feb 1994	551	1	12.50	—	$6,888
Jan 1994	624	1	12.66	—	$7,900
Dec 1993	620	1	12.33	—	$7,645
Nov 1993	621	1	14.49	—	$8,998
Oct 1993	601	1	15.85	—	$9,526
Sep 1993	536	1	15.03	—	$8,056
Aug 1993	516	1	15.66	—	$8,081
Jul 1993	593	1	15.46	—	$9,168
Jun 1993	602	1	16.79	—	$10,108
May 1993	620	1	17.68	—	$10,962
Apr 1993	542	1	18.05	—	$9,783
Mar 1993	579	1	18.14	—	$10,503
Feb 1993	533	1	17.90	—	$9,541
Jan 1993	577	1	16.93	—	$9,769

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 2011 — as filed, then multipliedworked

Oil                  473 bbl  × $ 95.72 =    $45,276
Casinghead gas         0 Mcf  × $  3.31 =         $0

────────────────────────────────────────────────────
Month total                                  $45,276

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/24512 is the state's own key, not one this site invented.