CHALK, G. O. -E-

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

Operated by CONOCOPHILLIPS COMPANY (P-5 172232) in the HOWARD-GLASSCOCK (GLORIETA) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 18991District 08Field 42971332Hydrogen sulphide fieldNGPA filingOilCasinghead gasSave Export

Value, all time

$10.3 M

Jan 1993 – Apr 2012

Value, last 12 filed months

$464 k

at the published price for each month

Months reported

232

no gaps in the span

Streams

oil, casinghead gas

The HOWARD-GLASSCOCK (GLORIETA) 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 131 leases and 850 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

660 ft

minimum

From a lease line

330 ft

minimum

A drilling unit in this field needs at least 10 acres.

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: “11/22/11.”

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	6	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
Oil	Disposition	309,948 bbl	$10,199,091
Casinghead gas	Production	64,328 Mcf	$135,330
Total			$10,334,422

30,467 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 (12)

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 32.1063, -101.2740. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.4 miles.

32.10670, -101.27281 · 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%

12 of 12 wells

With a plug date

50.0%

6 of 12 wells

Median depth

3,178 ft

12 wells filed one

Completion to plug

28.5 years

median over 6 wells

What the state filed about each well

On the RRC proration schedule

12100.0%

A plug date is filed

650.0%

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

650.0%

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

Total depth in feet, 12 of 12 wells. Median 3,178 ft, with the middle half between 3,102 and 3,224 ft; the shallowest is 3,100 ft and the deepest 3,950 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, 12 of 12 wells, Sep 1947 – Mar 2026. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed

Sep 1947 – Mar 2026

12 of 12 wells

Plug dates filed

May 1992 – Feb 2015

6 of 12 wells; 6 filed none

Last completion to plug: a median of 28.5 years across the 6 wells that filed both dates, with the middle half between 23.2 years and 39.1 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

12 wells


42-22732189	19	3,150 ft	Mar 2026	—	Yes
42-22733026	22	3,950 ft	Dec 2024	—	Yes
42-22734318	24	3,258 ft	Jan 1989	—	Yes
42-22710074	10	3,100 ft	Aug 1988	Apr 1999	Yes
42-22702518	4	3,181 ft	Nov 1987	—	Yes
42-22700506	7	3,215 ft	Aug 1984	—	Yes
42-22732707	21	3,102 ft	Aug 1982	—	Yes
42-22732188	20	3,250 ft	Nov 1980	Aug 2005	Yes
42-22700508	8	3,195 ft	Oct 1973	Feb 2015	Yes
42-22710075	11	3,100 ft	Oct 1973	May 1996	Yes
42-22730492	17	3,100 ft	Jul 1973	Sep 2005	Yes
42-22700504	9 L	3,175 ft	Sep 1947	May 1992	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 (232)

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

232 months


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	681	16	95.72	3.31	$65,238
Oct 2011	734	5	84.98	3.65	$62,394
Sep 2011	745	15	83.62	3.99	$62,357
Aug 2011	826	60	83.40	4.15	$69,137
Jul 2011	825	112	94.14	4.52	$78,171
Jun 2011	544	18	92.90	4.64	$50,621
May 2011	775	0	98.13	4.40	$76,051
Apr 2011	772	0	105.96	4.33	$81,801
Mar 2011	272	0	96.36	4.06	$26,210
Feb 2011	831	42	85.64	4.18	$71,342
Jan 2011	977	43	86.50	4.59	$84,708
Dec 2010	1,050	79	85.73	4.35	$90,360
Nov 2010	1,011	109	80.84	3.80	$82,143
Oct 2010	968	108	78.10	3.51	$75,980
Sep 2010	1,105	192	72.63	3.98	$81,020
Aug 2010	987	171	73.68	4.42	$73,478
Jul 2010	960	138	72.55	4.74	$70,302
Jun 2010	1,044	96	70.36	4.91	$73,927
May 2010	1,000	161	71.12	4.24	$71,802
Apr 2010	987	147	81.69	4.12	$81,234
Mar 2010	1,079	263	78.39	4.39	$85,737
Feb 2010	1,054	223	73.58	5.44	$78,767
Jan 2010	628	164	74.36	5.96	$47,676
Dec 2009	1,014	337	71.44	5.48	$74,288
Nov 2009	885	159	74.59	3.75	$66,609
Oct 2009	1,079	239	72.54	4.11	$79,253
Sep 2009	1,021	217	65.54	3.06	$67,581
Aug 2009	1,067	215	67.42	3.22	$72,629
Jul 2009	1,397	130	61.13	3.46	$85,849
Jun 2009	1,230	127	66.16	3.90	$81,871
May 2009	1,275	115	54.74	3.93	$70,245
Apr 2009	1,098	121	46.77	3.59	$51,788
Mar 2009	1,196	160	42.14	4.06	$51,049
Feb 2009	1,133	105	32.81	4.63	$37,660
Jan 2009	1,028	116	35.86	5.37	$37,487
Dec 2008	1,018	134	37.10	5.98	$38,569
Nov 2008	1,002	150	55.49	6.86	$56,630
Oct 2008	1,076	137	75.24	6.92	$81,907
Sep 2008	722	108	101.76	7.88	$74,321
Aug 2008	1,091	200	114.22	8.48	$126,311
Jul 2008	1,053	175	131.08	11.39	$140,020
Jun 2008	974	110	131.33	13.03	$129,349
May 2008	984	147	123.17	11.57	$122,901
Apr 2008	991	124	110.31	10.45	$110,614
Mar 2008	1,075	162	101.90	9.66	$111,108
Feb 2008	1,108	167	92.53	8.77	$103,988
Jan 2008	1,116	126	90.38	8.21	$101,898
Dec 2007	1,017	45	88.33	7.30	$90,160
Nov 2007	777	34	91.67	7.29	$71,476
Oct 2007	609	36	82.85	6.92	$50,705
Sep 2007	736	43	75.84	6.24	$56,087
Aug 2007	1,122	51	69.06	6.39	$77,811
Jul 2007	1,022	45	70.90	6.39	$72,747
Jun 2007	959	36	62.00	7.55	$59,730
May 2007	1,064	49	58.74	7.85	$62,884
Apr 2007	893	44	59.61	7.81	$53,575
Mar 2007	694	30	56.92	7.30	$39,722
Feb 2007	774	37	55.10	8.22	$42,951
Jan 2007	973	36	50.30	6.73	$49,184
Dec 2006	1,170	48	56.65	6.92	$66,613
Nov 2006	1,014	49	54.20	7.62	$55,332
Oct 2006	1,147	34	54.90	6.01	$63,175
Sep 2006	955	76	60.08	5.04	$57,759
Aug 2006	1,027	52	68.71	7.34	$70,947
Jul 2006	895	55	69.37	6.34	$62,435
Jun 2006	937	45	66.28	6.38	$62,392
May 2006	738	43	66.01	6.42	$48,992
Apr 2006	865	84	64.39	7.36	$56,316
Mar 2006	1,160	104	56.70	7.08	$66,509
Feb 2006	1,117	133	57.59	7.75	$65,359
Jan 2006	1,122	53	60.59	8.93	$68,455
Dec 2005	988	60	54.94	13.42	$55,086
Nov 2005	994	86	54.69	10.59	$55,272
Oct 2005	1,068	68	58.34	13.80	$63,245
Sep 2005	1,149	70	61.45	12.08	$71,452
Aug 2005	1,055	0	61.51	9.80	$64,893
Jul 2005	1,205	112	55.69	7.84	$67,985
Jun 2005	1,233	119	52.33	7.38	$65,401
May 2005	1,192	165	45.22	6.65	$55,000
Apr 2005	1,605	135	49.20	7.36	$79,960
Mar 2005	1,210	114	50.37	7.15	$61,763
Feb 2005	1,220	115	45.22	6.31	$55,894
Jan 2005	670	78	43.16	6.32	$29,410
Dec 2004	1,664	137	39.86	6.75	$67,252
Nov 2004	1,641	117	45.28	6.33	$75,045
Oct 2004	1,451	102	49.70	6.52	$72,779
Sep 2004	994	103	43.24	5.28	$43,525
Aug 2004	1,151	112	42.37	5.55	$49,390
Jul 2004	1,009	55	38.28	6.08	$38,959
Jun 2004	649	96	36.10	6.43	$24,046
May 2004	597	121	37.48	6.49	$23,161
Apr 2004	460	84	34.47	5.86	$16,348
Mar 2004	426	104	34.36	5.53	$15,212
Feb 2004	447	116	32.45	5.51	$15,144
Jan 2004	499	131	32.03	6.30	$16,808
Dec 2003	478	105	30.26	6.30	$15,126
Nov 2003	494	119	28.80	4.60	$14,774
Oct 2003	504	116	28.17	4.76	$14,750
Sep 2003	497	133	26.31	4.75	$13,708
Aug 2003	490	118	29.76	5.13	$15,188
Jul 2003	820	123	29.41	5.17	$24,752
Jun 2003	743	124	28.56	5.98	$21,962
May 2003	429	155	26.59	5.97	$12,333
Apr 2003	414	150	26.67	5.41	$11,852
Mar 2003	802	135	31.14	6.10	$25,797
Feb 2003	681	135	33.48	7.93	$23,870
Jan 2003	741	155	30.31	5.58	$23,325
Dec 2002	708	155	26.91	4.85	$19,805
Nov 2002	768	175	24.66	4.14	$19,663
Oct 2002	816	185	26.46	4.23	$22,374
Sep 2002	745	170	27.44	3.64	$21,061
Aug 2002	673	210	25.96	3.16	$18,136
Jul 2002	683	220	24.58	3.06	$17,462
Jun 2002	635	235	23.73	3.34	$15,853
May 2002	697	235	24.66	3.58	$18,030
Apr 2002	683	160	23.65	3.51	$16,715
Mar 2002	665	119	22.00	3.10	$14,999
Feb 2002	609	110	18.22	2.38	$11,357
Jan 2002	634	120	17.17	2.38	$11,171
Dec 2001	838	120	16.93	2.36	$14,471
Nov 2001	713	120	18.07	2.41	$13,173
Oct 2001	687	135	19.78	2.53	$13,930
Sep 2001	610	125	24.26	2.25	$15,080
Aug 2001	703	155	24.87	3.05	$17,957
Jul 2001	905	160	23.93	3.20	$22,168
Jun 2001	1,039	165	24.56	3.82	$26,149
May 2001	897	140	25.52	4.31	$23,494
Apr 2001	844	85	24.68	5.34	$21,283
Mar 2001	946	135	24.54	5.38	$23,941
Feb 2001	929	135	27.75	5.77	$26,558
Jan 2001	1,187	190	27.47	8.40	$34,203
Dec 2000	1,061	190	26.88	9.12	$30,253
Nov 2000	1,126	165	32.21	5.66	$37,202
Oct 2000	1,186	135	31.23	5.15	$37,733
Sep 2000	1,135	450	31.87	5.19	$38,506
Aug 2000	1,317	472	29.64	4.54	$41,179
Jul 2000	1,306	497	28.53	4.09	$39,293
Jun 2000	1,147	503	29.30	4.40	$35,819
May 2000	1,163	536	27.26	3.68	$33,676
Apr 2000	1,391	384	24.51	3.12	$35,290
Mar 2000	1,280	334	28.42	2.86	$37,333
Feb 2000	1,320	270	27.62	2.73	$37,195
Jan 2000	1,173	282	25.27	2.48	$30,341
Dec 1999	1,118	277	24.28	2.42	$27,816
Nov 1999	1,394	337	23.19	2.43	$33,147
Oct 1999	1,549	420	20.98	2.80	$33,676
Sep 1999	1,234	453	21.75	2.62	$28,026
Aug 1999	1,241	541	19.26	2.88	$25,457
Jul 1999	1,122	518	17.89	2.37	$21,301
Jun 1999	1,171	454	15.94	2.36	$19,738
May 1999	1,146	496	15.79	2.32	$19,247
Apr 1999	1,218	414	15.10	2.21	$19,306
Mar 1999	1,251	430	12.47	1.84	$16,390
Feb 1999	1,061	386	9.98	1.82	$11,290
Jan 1999	1,706	387	10.38	1.90	$18,444
Dec 1998	1,605	461	9.20	1.77	$15,584
Nov 1998	1,380	414	10.89	2.19	$15,933
Oct 1998	1,638	460	12.42	1.97	$21,250
Sep 1998	1,653	520	12.59	2.08	$21,894
Aug 1998	1,472	482	11.30	1.91	$17,553
Jul 1998	1,393	394	11.74	2.24	$17,235
Jun 1998	1,255	422	11.24	2.24	$15,050
May 1998	1,733	479	12.62	2.21	$22,927
Apr 1998	1,591	368	13.04	2.51	$21,669
Mar 1998	1,467	240	12.80	2.31	$19,332
Feb 1998	1,207	189	13.95	2.30	$17,272
Jan 1998	1,431	235	14.70	2.15	$21,542
Dec 1997	1,299	246	16.32	2.41	$21,793
Nov 1997	1,409	381	18.19	3.09	$26,806
Oct 1997	1,608	456	19.25	3.15	$32,390
Sep 1997	1,733	465	17.74	2.95	$32,117
Aug 1997	1,909	537	17.86	2.55	$35,467
Jul 1997	1,844	545	17.58	2.25	$33,642
Jun 1997	1,725	465	17.24	2.26	$30,789
May 1997	1,813	448	18.97	2.31	$35,427
Apr 1997	1,811	383	17.88	2.08	$33,178
Mar 1997	1,896	381	18.95	1.94	$36,668
Feb 1997	1,585	324	20.49	2.21	$33,191
Jan 1997	1,698	303	23.48	3.54	$40,942
Dec 1996	2,031	396	23.32	—	$47,363
Nov 1996	2,134	594	21.97	—	$46,884
Oct 1996	2,120	586	23.31	—	$49,417
Sep 1996	1,926	520	22.22	—	$42,796
Aug 1996	2,315	524	20.26	—	$46,902
Jul 1996	2,170	606	19.55	—	$42,424
Jun 1996	2,038	600	18.73	—	$38,172
May 1996	2,286	647	19.43	—	$44,417
Apr 1996	2,042	547	21.51	—	$43,923
Mar 1996	2,386	622	19.38	—	$46,241
Feb 1996	2,215	570	16.98	—	$37,611
Jan 1996	2,445	5	17.07	—	$41,736
Dec 1995	2,090	453	17.19	—	$35,927
Nov 1995	1,985	1,989	16.00	—	$31,760
Oct 1995	2,179	3,014	15.43	—	$33,622
Sep 1995	2,222	797	16.18	—	$35,952
Aug 1995	2,455	88	15.92	—	$39,084
Jul 1995	2,546	761	15.24	—	$38,801
Jun 1995	2,211	20	16.41	—	$36,283
May 1995	2,618	13	17.56	—	$45,972
Apr 1995	2,418	13	17.73	—	$42,871
Mar 1995	2,781	15	16.44	—	$45,720
Feb 1995	2,303	7	16.58	—	$38,184
Jan 1995	2,488	6	15.92	—	$39,609
Dec 1994	2,773	6	15.03	—	$41,678
Nov 1994	3,030	672	15.90	—	$48,177
Oct 1994	2,935	765	15.58	—	$45,727
Sep 1994	2,452	640	15.29	—	$37,491
Aug 1994	3,036	667	16.13	—	$48,971
Jul 1994	3,076	485	17.56	—	$54,015
Jun 1994	2,414	570	17.09	—	$41,255
May 1994	3,089	691	15.88	—	$49,053
Apr 1994	3,030	730	14.14	—	$42,844
Mar 1994	3,263	693	12.46	—	$40,657
Feb 1994	2,710	604	12.50	—	$33,875
Jan 1994	3,130	793	12.66	—	$39,626
Dec 1993	3,362	815	12.33	—	$41,453
Nov 1993	3,142	861	14.49	—	$45,528
Oct 1993	3,312	1,020	15.85	—	$52,495
Sep 1993	2,644	768	15.03	—	$39,739
Aug 1993	2,949	573	15.66	—	$46,181
Jul 1993	3,206	730	15.46	—	$49,565
Jun 1993	2,344	820	16.79	—	$39,356
May 1993	2,471	840	17.68	—	$43,687
Apr 1993	2,504	797	18.05	—	$45,197
Mar 1993	2,824	930	18.14	—	$51,227
Feb 1993	2,489	755	17.90	—	$44,553
Jan 1993	2,829	849	16.93	—	$47,895

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                  681 bbl  × $ 95.72 =    $65,185
Casinghead gas        16 Mcf  × $  3.31 =        $53

────────────────────────────────────────────────────
Month total                                  $65,238

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/18991 is the state's own key, not one this site invented.