CHALK, G. O. -D-

Name: CHALK, G. O. -D- 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 field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 2688District 08Field 42971001Hydrogen sulphide fieldNGPA filingOilCasinghead gasSave Export

Value, all time

$3.2 M

Jan 1993 – Apr 2012

Value, last 12 filed months

$534 k

at the published price for each month

Months reported

232

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.”

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	11	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	73,770 bbl	$3,234,264
Casinghead gas	Production	8,479 Mcf	$7,911
Total			$3,242,175

5,798 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 (20)

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 32.1070, -101.2640. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.4 miles.

32.10641, -101.26373 · 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%

20 of 20 wells

With a plug date

75.0%

15 of 20 wells

Median depth

2,769 ft

20 wells filed one

Completion to plug

26.9 years

median over 12 wells

What the state filed about each well

On the RRC proration schedule

20100.0%

A plug date is filed

1575.0%

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

1575.0%

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, 20 of 20 wells. Median 2,769 ft, with the middle half between 1,787 and 3,135 ft; the shallowest is 1,650 ft and the deepest 3,900 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, 17 of 20 wells, Nov 1938 – Aug 2010. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed

Nov 1938 – Aug 2010

17 of 20 wells; 3 filed none

Plug dates filed

Apr 1994 – Jul 2026

15 of 20 wells; 5 filed none

Last completion to plug: a median of 26.9 years across the 12 wells that filed both dates, with the middle half between 5.8 years and 30.1 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

20 wells


42-22700514	2	1,755 ft	—	Apr 1994	Yes
42-22704101	1	1,727 ft	—	Aug 1994	Yes
42-22730005	15	2,800 ft	—	Aug 1994	Yes
42-22734441	26	3,300 ft	Aug 2010	—	Yes
42-22730285	19	3,900 ft	May 2010	—	Yes
42-22700512	5	3,015 ft	Feb 1991	—	Yes
42-22734435	25	3,300 ft	Oct 1989	Apr 1999	Yes
42-22710072	11	2,000 ft	Apr 1989	Apr 1994	Yes
42-22710069	8	3,150 ft	Feb 1989	Sep 1994	Yes
42-22710073	12	1,650 ft	Nov 1988	Aug 1994	Yes
42-22734319	22	3,250 ft	Oct 1988	—	Yes
42-22734331	23	2,025 ft	Oct 1988	Aug 1994	Yes
42-22700510	6 U	3,053 ft	Oct 1973	Jul 2026	Yes
42-22700379	4 U	3,125 ft	Oct 1973	—	Yes
42-22710930	13	2,737 ft	Aug 1968	May 1996	Yes
42-22710933	14	2,550 ft	Jul 1968	Aug 1994	Yes
42-22710071	10	1,700 ft	Oct 1964	Aug 1994	Yes
42-22710070	9	1,700 ft	Oct 1964	Aug 1994	Yes
42-22710068	7 L	3,130 ft	Oct 1963	Aug 1994	Yes
42-22700513	3	1,798 ft	Nov 1938	Mar 2001	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	721	0	95.72	3.31	$69,014
Oct 2011	692	0	84.98	3.65	$58,806
Sep 2011	795	0	83.62	3.99	$66,478
Aug 2011	821	0	83.40	4.15	$68,471
Jul 2011	954	0	94.14	4.52	$89,810
Jun 2011	978	0	92.90	4.64	$90,856
May 2011	924	0	98.13	4.40	$90,672
Apr 2011	726	0	105.96	4.33	$76,927
Mar 2011	555	0	96.36	4.06	$53,480
Feb 2011	726	0	85.64	4.18	$62,175
Jan 2011	936	0	86.50	4.59	$80,964
Dec 2010	1,102	0	85.73	4.35	$94,474
Nov 2010	302	0	80.84	3.80	$24,414
Oct 2010	1,040	0	78.10	3.51	$81,224
Sep 2010	1,176	0	72.63	3.98	$85,413
Aug 2010	1,072	0	73.68	4.42	$78,985
Jul 2010	1,106	0	72.55	4.74	$80,240
Jun 2010	683	0	70.36	4.91	$48,056
May 2010	192	0	71.12	4.24	$13,655
Apr 2010	0	0	81.69	4.12	$0
Mar 2010	0	0	78.39	4.39	$0
Feb 2010	0	0	73.58	5.44	$0
Jan 2010	4	0	74.36	5.96	$297
Dec 2009	197	0	71.44	5.48	$14,074
Nov 2009	219	0	74.59	3.75	$16,335
Oct 2009	207	0	72.54	4.11	$15,016
Sep 2009	194	0	65.54	3.06	$12,715
Aug 2009	153	0	67.42	3.22	$10,315
Jul 2009	267	0	61.13	3.46	$16,322
Jun 2009	207	0	66.16	3.90	$13,695
May 2009	249	0	54.74	3.93	$13,630
Apr 2009	216	0	46.77	3.59	$10,102
Mar 2009	222	0	42.14	4.06	$9,355
Feb 2009	215	0	32.81	4.63	$7,054
Jan 2009	126	0	35.86	5.37	$4,518
Dec 2008	100	0	37.10	5.98	$3,710
Nov 2008	225	0	55.49	6.86	$12,485
Oct 2008	242	0	75.24	6.92	$18,208
Sep 2008	162	0	101.76	7.88	$16,485
Aug 2008	221	0	114.22	8.48	$25,243
Jul 2008	211	0	131.08	11.39	$27,658
Jun 2008	190	0	131.33	13.03	$24,953
May 2008	193	0	123.17	11.57	$23,772
Apr 2008	187	0	110.31	10.45	$20,628
Mar 2008	114	0	101.90	9.66	$11,617
Feb 2008	135	0	92.53	8.77	$12,492
Jan 2008	286	0	90.38	8.21	$25,849
Dec 2007	316	0	88.33	7.30	$27,912
Nov 2007	260	0	91.67	7.29	$23,834
Oct 2007	265	0	82.85	6.92	$21,955
Sep 2007	322	0	75.84	6.24	$24,420
Aug 2007	328	0	69.06	6.39	$22,652
Jul 2007	300	0	70.90	6.39	$21,270
Jun 2007	316	0	62.00	7.55	$19,592
May 2007	316	0	58.74	7.85	$18,562
Apr 2007	306	0	59.61	7.81	$18,241
Mar 2007	333	0	56.92	7.30	$18,954
Feb 2007	292	0	55.10	8.22	$16,089
Jan 2007	286	0	50.30	6.73	$14,386
Dec 2006	342	0	56.65	6.92	$19,374
Nov 2006	297	0	54.20	7.62	$16,097
Oct 2006	337	0	54.90	6.01	$18,501
Sep 2006	314	0	60.08	5.04	$18,865
Aug 2006	350	0	68.71	7.34	$24,049
Jul 2006	266	0	69.37	6.34	$18,452
Jun 2006	184	0	66.28	6.38	$12,196
May 2006	177	0	66.01	6.42	$11,684
Apr 2006	227	0	64.39	7.36	$14,617
Mar 2006	251	0	56.70	7.08	$14,232
Feb 2006	258	0	57.59	7.75	$14,858
Jan 2006	259	0	60.59	8.93	$15,693
Dec 2005	228	0	54.94	13.42	$12,526
Nov 2005	229	0	54.69	10.59	$12,524
Oct 2005	225	0	58.34	13.80	$13,127
Sep 2005	265	0	61.45	12.08	$16,284
Aug 2005	244	0	61.51	9.80	$15,008
Jul 2005	278	0	55.69	7.84	$15,482
Jun 2005	287	0	52.33	7.38	$15,019
May 2005	407	0	45.22	6.65	$18,405
Apr 2005	313	0	49.20	7.36	$15,400
Mar 2005	314	0	50.37	7.15	$15,816
Feb 2005	298	0	45.22	6.31	$13,476
Jan 2005	376	0	43.16	6.32	$16,228
Dec 2004	429	0	39.86	6.75	$17,100
Nov 2004	237	0	45.28	6.33	$10,731
Oct 2004	341	0	49.70	6.52	$16,948
Sep 2004	330	0	43.24	5.28	$14,269
Aug 2004	344	0	42.37	5.55	$14,575
Jul 2004	329	0	38.28	6.08	$12,594
Jun 2004	418	0	36.10	6.43	$15,090
May 2004	458	0	37.48	6.49	$17,166
Apr 2004	242	0	34.47	5.86	$8,342
Mar 2004	224	0	34.36	5.53	$7,697
Feb 2004	235	0	32.45	5.51	$7,626
Jan 2004	263	0	32.03	6.30	$8,424
Dec 2003	251	0	30.26	6.30	$7,595
Nov 2003	260	0	28.80	4.60	$7,488
Oct 2003	265	0	28.17	4.76	$7,465
Sep 2003	261	0	26.31	4.75	$6,867
Aug 2003	240	0	29.76	5.13	$7,142
Jul 2003	200	0	29.41	5.17	$5,882
Jun 2003	259	0	28.56	5.98	$7,397
May 2003	286	0	26.59	5.97	$7,605
Apr 2003	272	0	26.67	5.41	$7,254
Mar 2003	315	2	31.14	6.10	$9,821
Feb 2003	267	1	33.48	7.93	$8,947
Jan 2003	291	3	30.31	5.58	$8,837
Dec 2002	278	5	26.91	4.85	$7,505
Nov 2002	302	8	24.66	4.14	$7,480
Oct 2002	321	9	26.46	4.23	$8,532
Sep 2002	294	13	27.44	3.64	$8,115
Aug 2002	336	15	25.96	3.16	$8,770
Jul 2002	342	19	24.58	3.06	$8,465
Jun 2002	319	13	23.73	3.34	$7,613
May 2002	418	14	24.66	3.58	$10,358
Apr 2002	406	31	23.65	3.51	$9,711
Mar 2002	231	28	22.00	3.10	$5,169
Feb 2002	212	24	18.22	2.38	$3,920
Jan 2002	219	28	17.17	2.38	$3,827
Dec 2001	232	28	16.93	2.36	$3,994
Nov 2001	219	29	18.07	2.41	$4,027
Oct 2001	213	28	19.78	2.53	$4,284
Sep 2001	163	31	24.26	2.25	$4,024
Aug 2001	199	30	24.87	3.05	$5,041
Jul 2001	239	28	23.93	3.20	$5,809
Jun 2001	239	28	24.56	3.82	$5,977
May 2001	208	23	25.52	4.31	$5,407
Apr 2001	181	28	24.68	5.34	$4,616
Mar 2001	185	27	24.54	5.38	$4,685
Feb 2001	172	27	27.75	5.77	$4,929
Jan 2001	239	37	27.47	8.40	$6,876
Dec 2000	234	31	26.88	9.12	$6,573
Nov 2000	219	24	32.21	5.66	$7,190
Oct 2000	188	25	31.23	5.15	$6,000
Sep 2000	182	33	31.87	5.19	$5,971
Aug 2000	238	31	29.64	4.54	$7,195
Jul 2000	191	22	28.53	4.09	$5,539
Jun 2000	187	31	29.30	4.40	$5,615
May 2000	232	34	27.26	3.68	$6,449
Apr 2000	189	30	24.51	3.12	$4,726
Mar 2000	177	30	28.42	2.86	$5,116
Feb 2000	204	25	27.62	2.73	$5,703
Jan 2000	204	29	25.27	2.48	$5,227
Dec 1999	202	44	24.28	2.42	$5,011
Nov 1999	256	45	23.19	2.43	$6,046
Oct 1999	253	61	20.98	2.80	$5,479
Sep 1999	278	54	21.75	2.62	$6,188
Aug 1999	219	55	19.26	2.88	$4,376
Jul 1999	252	48	17.89	2.37	$4,622
Jun 1999	223	43	15.94	2.36	$3,656
May 1999	244	48	15.79	2.32	$3,964
Apr 1999	229	36	15.10	2.21	$3,537
Mar 1999	268	37	12.47	1.84	$3,410
Feb 1999	229	34	9.98	1.82	$2,347
Jan 1999	145	38	10.38	1.90	$1,577
Dec 1998	173	29	9.20	1.77	$1,643
Nov 1998	191	41	10.89	2.19	$2,170
Oct 1998	199	47	12.42	1.97	$2,564
Sep 1998	234	39	12.59	2.08	$3,027
Aug 1998	156	42	11.30	1.91	$1,843
Jul 1998	106	43	11.74	2.24	$1,341
Jun 1998	267	51	11.24	2.24	$3,115
May 1998	232	63	12.62	2.21	$3,067
Apr 1998	216	62	13.04	2.51	$2,972
Mar 1998	246	65	12.80	2.31	$3,299
Feb 1998	155	52	13.95	2.30	$2,282
Jan 1998	145	38	14.70	2.15	$2,213
Dec 1997	238	44	16.32	2.41	$3,990
Nov 1997	305	51	18.19	3.09	$5,705
Oct 1997	281	52	19.25	3.15	$5,573
Sep 1997	218	49	17.74	2.95	$4,012
Aug 1997	249	77	17.86	2.55	$4,644
Jul 1997	183	49	17.58	2.25	$3,327
Jun 1997	218	46	17.24	2.26	$3,862
May 1997	423	37	18.97	2.31	$8,110
Apr 1997	256	61	17.88	2.08	$4,704
Mar 1997	256	65	18.95	1.94	$4,977
Feb 1997	389	60	20.49	2.21	$8,103
Jan 1997	392	73	23.48	3.54	$9,463
Dec 1996	404	72	23.32	—	$9,421
Nov 1996	407	62	21.97	—	$8,942
Oct 1996	309	74	23.31	—	$7,203
Sep 1996	438	77	22.22	—	$9,732
Aug 1996	403	79	20.26	—	$8,165
Jul 1996	365	78	19.55	—	$7,136
Jun 1996	437	85	18.73	—	$8,185
May 1996	406	91	19.43	—	$7,889
Apr 1996	487	88	21.51	—	$10,475
Mar 1996	557	91	19.38	—	$10,795
Feb 1996	486	85	16.98	—	$8,252
Jan 1996	514	94	17.07	—	$8,774
Dec 1995	606	87	17.19	—	$10,417
Nov 1995	480	82	16.00	—	$7,680
Oct 1995	551	121	15.43	—	$8,502
Sep 1995	430	83	16.18	—	$6,957
Aug 1995	303	91	15.92	—	$4,824
Jul 1995	274	96	15.24	—	$4,176
Jun 1995	294	89	16.41	—	$4,825
May 1995	325	79	17.56	—	$5,707
Apr 1995	274	90	17.73	—	$4,858
Mar 1995	193	95	16.44	—	$3,173
Feb 1995	246	144	16.58	—	$4,079
Jan 1995	318	148	15.92	—	$5,063
Dec 1994	260	135	15.03	—	$3,908
Nov 1994	227	122	15.90	—	$3,609
Oct 1994	263	146	15.58	—	$4,098
Sep 1994	278	165	15.29	—	$4,251
Aug 1994	302	194	16.13	—	$4,871
Jul 1994	309	185	17.56	—	$5,426
Jun 1994	342	142	17.09	—	$5,845
May 1994	231	202	15.88	—	$3,668
Apr 1994	238	203	14.14	—	$3,365
Mar 1994	253	158	12.46	—	$3,152
Feb 1994	189	173	12.50	—	$2,363
Jan 1994	354	135	12.66	—	$4,482
Dec 1993	521	67	12.33	—	$6,424
Nov 1993	236	113	14.49	—	$3,420
Oct 1993	796	180	15.85	—	$12,617
Sep 1993	458	144	15.03	—	$6,884
Aug 1993	595	316	15.66	—	$9,318
Jul 1993	426	204	15.46	—	$6,586
Jun 1993	369	144	16.79	—	$6,196
May 1993	546	143	17.68	—	$9,653
Apr 1993	530	111	18.05	—	$9,567
Mar 1993	598	95	18.14	—	$10,848
Feb 1993	529	85	17.90	—	$9,469
Jan 1993	649	55	16.93	—	$10,988

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                  721 bbl  × $ 95.72 =    $69,014
Casinghead gas         0 Mcf  × $  3.31 =         $0

────────────────────────────────────────────────────
Month total                                  $69,014

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/2688 is the state's own key, not one this site invented.