CHALK

Name: CHALK 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 2805District 08Field 42971001Hydrogen sulphide fieldOilCasinghead gasSave Export

Value, all time

$17.8 M

Jan 1993 – Aug 2012

Value, last 12 filed months

$427 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	490,812 bbl	$17,611,833
Casinghead gas	Production	37,754 Mcf	$171,801
Total			$17,783,634

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 (32)

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 32.1342, -101.2323. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.9 miles.

32.13401, -101.23236 · 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%

32 of 32 wells

With a plug date

21.9%

7 of 32 wells

Median depth

3,020 ft

31 wells filed one

Completion to plug

31.6 years

median over 7 wells

What the state filed about each well

On the RRC proration schedule

32100.0%

A plug date is filed

721.9%

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

721.9%

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

Total depth in feet, 31 of 32 wells. Median 3,020 ft, with the middle half between 3,001 and 3,025 ft; the shallowest is 2,960 ft and the deepest 7,850 ft. The median is published rather than the mean, because a single mis-keyed depth moves a mean and cannot move a median.

When they were last completed

Last completion by decade, 31 of 32 wells, Feb 1970 – Nov 1993. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed

Feb 1970 – Nov 1993

31 of 32 wells; 1 filed none

Plug dates filed

Sep 1993 – Jul 2020

7 of 32 wells; 25 filed none

Last completion to plug: a median of 31.6 years across the 7 wells that filed both dates, with the middle half between 24.3 years and 40.5 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

32 wells


42-22702543	3UW	—	—	—	Yes
42-22734466	33	7,850 ft	Nov 1993	—	Yes
42-22731638	32	3,020 ft	Aug 1978	—	Yes
42-22731428	25	3,025 ft	Jul 1978	Sep 1993	Yes
42-22730990	13	3,070 ft	May 1978	—	Yes
42-22731065	17	3,037 ft	May 1978	Apr 2018	Yes
42-22702538	3	3,032 ft	Mar 1978	—	Yes
42-22700348	1	2,981 ft	Feb 1978	—	Yes
42-22702540	4	3,040 ft	Feb 1978	—	Yes
42-22731207	21	3,025 ft	Feb 1978	—	Yes
42-22702939	7	3,025 ft	Feb 1978	—	Yes
42-22702941	10	2,978 ft	Feb 1978	—	Yes
42-22731558	31	3,020 ft	Feb 1978	—	Yes
42-22731214	20	2,960 ft	Jan 1978	Aug 2009	Yes
42-22731141	18	3,005 ft	Jan 1978	—	Yes
42-22731154	19	3,015 ft	Jan 1978	—	Yes
42-22731215	22	2,980 ft	Jan 1978	—	Yes
42-22731493	28	3,020 ft	Jan 1978	—	Yes
42-22731489	27	2,990 ft	Jan 1978	—	Yes
42-22731503	30	3,020 ft	Jan 1978	Jul 2020	Yes
42-22731501	29	3,020 ft	Oct 1977	—	Yes
42-22731427	26	3,025 ft	Aug 1977	Sep 2018	Yes
42-22731429	24	3,000 ft	Aug 1977	—	Yes
42-22731430	23	3,020 ft	Jul 1977	—	Yes
42-22731115	16	2,993 ft	Dec 1976	—	Yes
42-22731064	15	3,060 ft	Oct 1976	—	Yes
42-22731031	14	3,012 ft	Aug 1976	Sep 1997	Yes
42-22730964	12	3,025 ft	Apr 1976	—	Yes
42-22702943	11	3,002 ft	Apr 1970	—	Yes
42-22702542	6	3,007 ft	Mar 1970	—	Yes
42-22702536	2	3,000 ft	Mar 1970	—	Yes
42-22702940	1UW	3,005 ft	Feb 1970	Sep 1997	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	1,811	0	95.72	3.31	$173,349
Oct 2011	1,735	0	84.98	3.65	$147,440
Sep 2011	1,266	0	83.62	3.99	$105,863
Aug 2011	1,280	0	83.40	4.15	$106,752
Jul 2011	1,746	0	94.14	4.52	$164,368
Jun 2011	1,302	0	92.90	4.64	$120,956
May 2011	1,461	0	98.13	4.40	$143,368
Apr 2011	1,463	0	105.96	4.33	$155,019
Mar 2011	1,552	0	96.36	4.06	$149,551
Feb 2011	1,310	0	85.64	4.18	$112,188
Jan 2011	1,859	0	86.50	4.59	$160,804
Dec 2010	1,618	0	85.73	4.35	$138,711
Nov 2010	1,587	0	80.84	3.80	$128,293
Oct 2010	1,687	0	78.10	3.51	$131,755
Sep 2010	1,754	0	72.63	3.98	$127,393
Aug 2010	1,773	0	73.68	4.42	$130,635
Jul 2010	2,102	0	72.55	4.74	$152,500
Jun 2010	1,558	0	70.36	4.91	$109,621
May 2010	1,780	0	71.12	4.24	$126,594
Apr 2010	1,728	0	81.69	4.12	$141,160
Mar 2010	1,926	0	78.39	4.39	$150,979
Feb 2010	1,496	0	73.58	5.44	$110,076
Jan 2010	1,749	0	74.36	5.96	$130,056
Dec 2009	1,663	0	71.44	5.48	$118,805
Nov 2009	1,721	0	74.59	3.75	$128,369
Oct 2009	1,913	0	72.54	4.11	$138,769
Sep 2009	1,686	0	65.54	3.06	$110,500
Aug 2009	1,604	0	67.42	3.22	$108,142
Jul 2009	1,683	0	61.13	3.46	$102,882
Jun 2009	1,848	0	66.16	3.90	$122,264
May 2009	1,705	0	54.74	3.93	$93,332
Apr 2009	1,714	0	46.77	3.59	$80,164
Mar 2009	1,672	0	42.14	4.06	$70,458
Feb 2009	1,598	0	32.81	4.63	$52,430
Jan 2009	1,859	0	35.86	5.37	$66,664
Dec 2008	1,634	0	37.10	5.98	$60,621
Nov 2008	1,675	0	55.49	6.86	$92,946
Oct 2008	1,885	0	75.24	6.92	$141,827
Sep 2008	1,724	0	101.76	7.88	$175,434
Aug 2008	1,830	0	114.22	8.48	$209,023
Jul 2008	1,666	0	131.08	11.39	$218,379
Jun 2008	1,728	0	131.33	13.03	$226,938
May 2008	1,592	0	123.17	11.57	$196,087
Apr 2008	1,616	0	110.31	10.45	$178,261
Mar 2008	1,629	0	101.90	9.66	$165,995
Feb 2008	1,631	0	92.53	8.77	$150,916
Jan 2008	1,891	0	90.38	8.21	$170,909
Dec 2007	1,999	0	88.33	7.30	$176,572
Nov 2007	1,717	0	91.67	7.29	$157,397
Oct 2007	1,761	0	82.85	6.92	$145,899
Sep 2007	1,911	0	75.84	6.24	$144,930
Aug 2007	1,781	0	69.06	6.39	$122,996
Jul 2007	1,925	0	70.90	6.39	$136,483
Jun 2007	2,100	0	62.00	7.55	$130,200
May 2007	2,079	0	58.74	7.85	$122,120
Apr 2007	1,876	0	59.61	7.81	$111,828
Mar 2007	2,068	0	56.92	7.30	$117,711
Feb 2007	1,531	0	55.10	8.22	$84,358
Jan 2007	1,943	0	50.30	6.73	$97,733
Dec 2006	2,071	0	56.65	6.92	$117,322
Nov 2006	1,998	0	54.20	7.62	$108,292
Oct 2006	2,074	0	54.90	6.01	$113,863
Sep 2006	1,913	0	60.08	5.04	$114,933
Aug 2006	1,898	0	68.71	7.34	$130,412
Jul 2006	1,658	0	69.37	6.34	$115,015
Jun 2006	1,741	0	66.28	6.38	$115,393
May 2006	1,892	0	66.01	6.42	$124,891
Apr 2006	1,773	0	64.39	7.36	$114,163
Mar 2006	1,840	0	56.70	7.08	$104,328
Feb 2006	1,729	0	57.59	7.75	$99,573
Jan 2006	2,064	0	60.59	8.93	$125,058
Dec 2005	2,170	0	54.94	13.42	$119,220
Nov 2005	1,789	0	54.69	10.59	$97,840
Oct 2005	2,147	0	58.34	13.80	$125,256
Sep 2005	2,097	0	61.45	12.08	$128,861
Aug 2005	1,648	0	61.51	9.80	$101,368
Jul 2005	1,729	0	55.69	7.84	$96,288
Jun 2005	1,759	0	52.33	7.38	$92,048
May 2005	1,947	0	45.22	6.65	$88,043
Apr 2005	1,767	0	49.20	7.36	$86,936
Mar 2005	1,960	0	50.37	7.15	$98,725
Feb 2005	1,678	0	45.22	6.31	$75,879
Jan 2005	1,829	0	43.16	6.32	$78,940
Dec 2004	2,005	0	39.86	6.75	$79,919
Nov 2004	2,153	0	45.28	6.33	$97,488
Oct 2004	2,079	0	49.70	6.52	$103,326
Sep 2004	1,964	0	43.24	5.28	$84,923
Aug 2004	1,784	0	42.37	5.55	$75,588
Jul 2004	2,014	744	38.28	6.08	$81,623
Jun 2004	1,779	652	36.10	6.43	$68,416
May 2004	1,886	682	37.48	6.49	$75,117
Apr 2004	1,684	660	34.47	5.86	$61,914
Mar 2004	1,826	682	34.36	5.53	$66,513
Feb 2004	1,806	638	32.45	5.51	$62,120
Jan 2004	1,937	680	32.03	6.30	$66,326
Dec 2003	1,831	674	30.26	6.30	$59,653
Nov 2003	1,952	659	28.80	4.60	$59,246
Oct 2003	2,077	682	28.17	4.76	$61,755
Sep 2003	1,970	660	26.31	4.75	$54,965
Aug 2003	1,971	680	29.76	5.13	$62,145
Jul 2003	2,092	682	29.41	5.17	$65,052
Jun 2003	1,979	660	28.56	5.98	$60,469
May 2003	2,013	662	26.59	5.97	$57,480
Apr 2003	1,990	660	26.67	5.41	$56,642
Mar 2003	1,999	682	31.14	6.10	$66,406
Feb 2003	1,839	614	33.48	7.93	$66,436
Jan 2003	2,081	674	30.31	5.58	$66,837
Dec 2002	2,077	682	26.91	4.85	$59,202
Nov 2002	2,062	653	24.66	4.14	$53,550
Oct 2002	2,184	682	26.46	4.23	$60,673
Sep 2002	2,183	660	27.44	3.64	$62,301
Aug 2002	2,250	678	25.96	3.16	$60,555
Jul 2002	2,232	682	24.58	3.06	$56,951
Jun 2002	2,335	660	23.73	3.34	$57,613
May 2002	2,105	682	24.66	3.58	$54,354
Apr 2002	2,185	660	23.65	3.51	$53,993
Mar 2002	2,413	682	22.00	3.10	$55,202
Feb 2002	2,175	616	18.22	2.38	$41,092
Jan 2002	2,313	682	17.17	2.38	$41,334
Dec 2001	2,179	682	16.93	2.36	$38,503
Nov 2001	2,276	660	18.07	2.41	$42,715
Oct 2001	2,486	682	19.78	2.53	$50,898
Sep 2001	2,471	690	24.26	2.25	$61,500
Aug 2001	2,456	682	24.87	3.05	$63,163
Jul 2001	2,588	682	23.93	3.20	$64,111
Jun 2001	2,572	660	24.56	3.82	$65,692
May 2001	2,348	682	25.52	4.31	$62,859
Apr 2001	2,216	657	24.68	5.34	$58,196
Mar 2001	2,387	677	24.54	5.38	$62,217
Feb 2001	2,102	616	27.75	5.77	$61,883
Jan 2001	2,330	682	27.47	8.40	$69,733
Dec 2000	2,331	682	26.88	9.12	$68,879
Nov 2000	2,177	630	32.21	5.66	$73,686
Oct 2000	2,159	711	31.23	5.15	$71,084
Sep 2000	1,977	650	31.87	5.19	$66,378
Aug 2000	2,014	713	29.64	4.54	$62,933
Jul 2000	2,167	713	28.53	4.09	$64,741
Jun 2000	2,070	690	29.30	4.40	$63,685
May 2000	2,147	713	27.26	3.68	$61,151
Apr 2000	2,098	690	24.51	3.12	$53,572
Mar 2000	2,166	682	28.42	2.86	$63,508
Feb 2000	2,157	666	27.62	2.73	$61,392
Jan 2000	2,298	682	25.27	2.48	$59,762
Dec 1999	2,261	713	24.28	2.42	$56,625
Nov 1999	2,457	0	23.19	2.43	$56,978
Oct 1999	2,450	0	20.98	2.80	$51,401
Sep 1999	2,448	0	21.75	2.62	$53,244
Aug 1999	2,625	0	19.26	2.88	$50,558
Jul 1999	2,699	0	17.89	2.37	$48,285
Jun 1999	2,684	0	15.94	2.36	$42,783
May 1999	2,598	0	15.79	2.32	$41,022
Apr 1999	2,609	0	15.10	2.21	$39,396
Mar 1999	2,709	0	12.47	1.84	$33,781
Feb 1999	2,479	0	9.98	1.82	$24,740
Jan 1999	2,702	0	10.38	1.90	$28,047
Dec 1998	2,784	0	9.20	1.77	$25,613
Nov 1998	2,694	0	10.89	2.19	$29,338
Oct 1998	2,649	0	12.42	1.97	$32,901
Sep 1998	2,197	0	12.59	2.08	$27,660
Aug 1998	2,236	0	11.30	1.91	$25,267
Jul 1998	2,257	0	11.74	2.24	$26,497
Jun 1998	2,285	0	11.24	2.24	$25,683
May 1998	2,300	0	12.62	2.21	$29,026
Apr 1998	2,125	0	13.04	2.51	$27,710
Mar 1998	2,052	0	12.80	2.31	$26,266
Feb 1998	1,906	0	13.95	2.30	$26,589
Jan 1998	2,140	0	14.70	2.15	$31,458
Dec 1997	2,150	0	16.32	2.41	$35,088
Nov 1997	2,064	0	18.19	3.09	$37,544
Oct 1997	2,152	0	19.25	3.15	$41,426
Sep 1997	2,191	0	17.74	2.95	$38,868
Aug 1997	2,137	0	17.86	2.55	$38,167
Jul 1997	1,788	0	17.58	2.25	$31,433
Jun 1997	2,063	0	17.24	2.26	$35,566
May 1997	2,051	0	18.97	2.31	$38,907
Apr 1997	2,058	0	17.88	2.08	$36,797
Mar 1997	2,216	0	18.95	1.94	$41,993
Feb 1997	2,064	0	20.49	2.21	$42,291
Jan 1997	2,377	0	23.48	3.54	$55,812
Dec 1996	2,336	0	23.32	—	$54,476
Nov 1996	2,177	0	21.97	—	$47,829
Oct 1996	2,347	0	23.31	—	$54,709
Sep 1996	2,345	0	22.22	—	$52,106
Aug 1996	2,370	0	20.26	—	$48,016
Jul 1996	2,327	0	19.55	—	$45,493
Jun 1996	2,355	0	18.73	—	$44,109
May 1996	2,355	0	19.43	—	$45,758
Apr 1996	2,393	0	21.51	—	$51,473
Mar 1996	2,462	0	19.38	—	$47,714
Feb 1996	1,886	0	16.98	—	$32,024
Jan 1996	2,700	0	17.07	—	$46,089
Dec 1995	2,974	0	17.19	—	$51,123
Nov 1995	2,816	0	16.00	—	$45,056
Oct 1995	3,044	0	15.43	—	$46,969
Sep 1995	2,744	0	16.18	—	$44,398
Aug 1995	3,007	0	15.92	—	$47,871
Jul 1995	2,989	0	15.24	—	$45,552
Jun 1995	2,911	0	16.41	—	$47,770
May 1995	3,014	0	17.56	—	$52,926
Apr 1995	2,887	0	17.73	—	$51,187
Mar 1995	2,935	0	16.44	—	$48,251
Feb 1995	2,691	0	16.58	—	$44,617
Jan 1995	2,995	0	15.92	—	$47,680
Dec 1994	2,812	0	15.03	—	$42,264
Nov 1994	2,877	0	15.90	—	$45,744
Oct 1994	2,966	1	15.58	—	$46,210
Sep 1994	2,908	1	15.29	—	$44,463
Aug 1994	3,007	0	16.13	—	$48,503
Jul 1994	2,979	1	17.56	—	$52,311
Jun 1994	2,901	1	17.09	—	$49,578
May 1994	2,975	1	15.88	—	$47,243
Apr 1994	2,867	1	14.14	—	$40,539
Mar 1994	2,888	1	12.46	—	$35,984
Feb 1994	2,654	1	12.50	—	$33,175
Jan 1994	2,814	1	12.66	—	$35,625
Dec 1993	2,866	1	12.33	—	$35,338
Nov 1993	2,890	1	14.49	—	$41,876
Oct 1993	2,881	1	15.85	—	$45,664
Sep 1993	2,832	1	15.03	—	$42,565
Aug 1993	2,748	1	15.66	—	$43,034
Jul 1993	2,809	1	15.46	—	$43,427
Jun 1993	3,001	1	16.79	—	$50,387
May 1993	3,149	1	17.68	—	$55,674
Apr 1993	2,956	1	18.05	—	$53,356
Mar 1993	3,105	1	18.14	—	$56,325
Feb 1993	2,979	1	17.90	—	$53,324
Jan 1993	3,262	1	16.93	—	$55,226

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                1,811 bbl  × $ 95.72 =   $173,349
Casinghead gas         0 Mcf  × $  3.31 =         $0

────────────────────────────────────────────────────
Month total                                 $173,349

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/2805 is the state's own key, not one this site invented.