CHALK, G. O.

Name: CHALK, G. O. 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 2684District 08Field 42971001Hydrogen sulphide fieldNGPA filingOilCasinghead gasSave Export

Value, all time

$1.9 M

Jan 1993 – Mar 2012

Value, last 12 filed months

$151 k

at the published price for each month

Months reported

231

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	3	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	46,212 bbl	$1,906,453
Casinghead gas	Production	8,712 Mcf	$32,969
Total			$1,939,422

2,439 Mcf of this lease's gas, across 44 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 (14)

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 32.1187, -101.2629. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.4 miles.

32.11883, -101.26321 · 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%

14 of 14 wells

With a plug date

50.0%

7 of 14 wells

Median depth

3,000 ft

13 wells filed one

Completion to plug

19.3 years

median over 6 wells

What the state filed about each well

On the RRC proration schedule

14100.0%

A plug date is filed

750.0%

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

750.0%

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, 13 of 14 wells. Median 3,000 ft, with the middle half between 2,600 and 3,100 ft; the shallowest is 1,460 ft and the deepest 7,700 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, 11 of 14 wells, Sep 1965 – Jun 2019. 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 1965 – Jun 2019

11 of 14 wells; 3 filed none

Plug dates filed

Jun 1968 – Jun 2021

7 of 14 wells; 7 filed none

Last completion to plug: a median of 19.3 years across the 6 wells that filed both dates, with the middle half between 5.6 years and 36.5 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

14 wells


42-22702316	4D	1,648 ft	—	Aug 1992	Yes
42-22710053	15 U	—	—	—	Yes
42-22730294	20D	7,700 ft	—	—	Yes
42-22700503	12 U	2,961 ft	Jun 2019	—	Yes
42-22710051	13 U	3,049 ft	Apr 2014	—	Yes
42-22710052	14 U	3,000 ft	Sep 2013	Apr 2017	Yes
42-22732784	24	3,150 ft	Jul 2009	—	Yes
42-22733069	25	3,100 ft	Mar 2008	Nov 2019	Yes
42-22733401	26	3,100 ft	Mar 2003	—	Yes
42-22732158	22	3,100 ft	Sep 1980	Jun 2021	Yes
42-22730095	19	2,600 ft	Nov 1969	—	Yes
42-22730099	18	2,600 ft	Oct 1969	Jun 2009	Yes
42-22720060	17	1,750 ft	Jan 1967	Jun 1968	Yes
42-22710346	16	1,460 ft	Sep 1965	Jul 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 (231)

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

231 months


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	230	83	95.72	3.31	$22,290
Oct 2011	250	72	84.98	3.65	$21,508
Sep 2011	206	54	83.62	3.99	$17,441
Aug 2011	204	52	83.40	4.15	$17,229
Jul 2011	207	56	94.14	4.52	$19,740
Jun 2011	190	0	92.90	4.64	$17,651
May 2011	136	3	98.13	4.40	$13,359
Apr 2011	202	11	105.96	4.33	$21,452
Mar 2011	130	8	96.36	4.06	$12,559
Feb 2011	162	25	85.64	4.18	$13,978
Jan 2011	211	48	86.50	4.59	$18,472
Dec 2010	224	21	85.73	4.35	$19,295
Nov 2010	227	33	80.84	3.80	$18,476
Oct 2010	268	60	78.10	3.51	$21,141
Sep 2010	266	56	72.63	3.98	$19,542
Aug 2010	246	71	73.68	4.42	$18,439
Jul 2010	201	80	72.55	4.74	$14,961
Jun 2010	178	85	70.36	4.91	$12,941
May 2010	216	74	71.12	4.24	$15,675
Apr 2010	199	39	81.69	4.12	$16,417
Mar 2010	236	76	78.39	4.39	$18,834
Feb 2010	212	67	73.58	5.44	$15,964
Jan 2010	185	83	74.36	5.96	$14,252
Dec 2009	214	77	71.44	5.48	$15,710
Nov 2009	201	73	74.59	3.75	$15,266
Oct 2009	195	53	72.54	4.11	$14,363
Sep 2009	184	35	65.54	3.06	$12,167
Aug 2009	184	47	67.42	3.22	$12,557
Jul 2009	178	34	61.13	3.46	$10,999
Jun 2009	89	29	66.16	3.90	$6,001
May 2009	175	27	54.74	3.93	$9,686
Apr 2009	146	35	46.77	3.59	$6,954
Mar 2009	210	43	42.14	4.06	$9,024
Feb 2009	225	38	32.81	4.63	$7,558
Jan 2009	268	38	35.86	5.37	$9,815
Dec 2008	268	19	37.10	5.98	$10,056
Nov 2008	260	13	55.49	6.86	$14,517
Oct 2008	238	21	75.24	6.92	$18,052
Sep 2008	203	18	101.76	7.88	$20,799
Aug 2008	213	22	114.22	8.48	$24,515
Jul 2008	207	20	131.08	11.39	$27,361
Jun 2008	191	22	131.33	13.03	$25,371
May 2008	204	34	123.17	11.57	$25,520
Apr 2008	208	40	110.31	10.45	$23,363
Mar 2008	211	39	101.90	9.66	$21,878
Feb 2008	199	40	92.53	8.77	$18,764
Jan 2008	218	36	90.38	8.21	$19,998
Dec 2007	84	22	88.33	7.30	$7,580
Nov 2007	83	17	91.67	7.29	$7,733
Oct 2007	225	34	82.85	6.92	$18,877
Sep 2007	239	38	75.84	6.24	$18,363
Aug 2007	235	36	69.06	6.39	$16,459
Jul 2007	227	22	70.90	6.39	$16,235
Jun 2007	236	26	62.00	7.55	$14,828
May 2007	238	24	58.74	7.85	$14,168
Apr 2007	237	32	59.61	7.81	$14,377
Mar 2007	239	27	56.92	7.30	$13,801
Feb 2007	215	19	55.10	8.22	$12,003
Jan 2007	246	23	50.30	6.73	$12,529
Dec 2006	252	25	56.65	6.92	$14,449
Nov 2006	238	28	54.20	7.62	$13,113
Oct 2006	268	30	54.90	6.01	$14,894
Sep 2006	274	32	60.08	5.04	$16,623
Aug 2006	281	32	68.71	7.34	$19,542
Jul 2006	291	24	69.37	6.34	$20,339
Jun 2006	270	16	66.28	6.38	$17,998
May 2006	267	90	66.01	6.42	$18,203
Apr 2006	260	89	64.39	7.36	$17,396
Mar 2006	276	82	56.70	7.08	$16,230
Feb 2006	249	59	57.59	7.75	$14,797
Jan 2006	258	51	60.59	8.93	$16,088
Dec 2005	228	40	54.94	13.42	$13,063
Nov 2005	240	52	54.69	10.59	$13,676
Oct 2005	234	40	58.34	13.80	$14,203
Sep 2005	223	26	61.45	12.08	$14,017
Aug 2005	232	0	61.51	9.80	$14,270
Jul 2005	242	48	55.69	7.84	$13,853
Jun 2005	239	31	52.33	7.38	$12,736
May 2005	279	50	45.22	6.65	$12,949
Apr 2005	246	55	49.20	7.36	$12,508
Mar 2005	216	52	50.37	7.15	$11,252
Feb 2005	226	44	45.22	6.31	$10,497
Jan 2005	254	24	43.16	6.32	$11,114
Dec 2004	255	54	39.86	6.75	$10,529
Nov 2004	271	58	45.28	6.33	$12,638
Oct 2004	288	59	49.70	6.52	$14,698
Sep 2004	275	64	43.24	5.28	$12,229
Aug 2004	370	65	42.37	5.55	$16,038
Jul 2004	371	68	38.28	6.08	$14,616
Jun 2004	263	62	36.10	6.43	$9,893
May 2004	291	65	37.48	6.49	$11,329
Apr 2004	264	53	34.47	5.86	$9,411
Mar 2004	329	54	34.36	5.53	$11,603
Feb 2004	285	47	32.45	5.51	$9,507
Jan 2004	282	50	32.03	6.30	$9,347
Dec 2003	286	53	30.26	6.30	$8,988
Nov 2003	282	55	28.80	4.60	$8,374
Oct 2003	313	52	28.17	4.76	$9,065
Sep 2003	275	53	26.31	4.75	$7,487
Aug 2003	276	62	29.76	5.13	$8,532
Jul 2003	279	64	29.41	5.17	$8,536
Jun 2003	255	53	28.56	5.98	$7,600
May 2003	272	62	26.59	5.97	$7,603
Apr 2003	258	60	26.67	5.41	$7,205
Mar 2003	272	62	31.14	6.10	$8,848
Feb 2003	197	54	33.48	7.93	$7,024
Jan 2003	240	28	30.31	5.58	$7,431
Dec 2002	221	27	26.91	4.85	$6,078
Nov 2002	234	0	24.66	4.14	$5,770
Oct 2002	274	31	26.46	4.23	$7,381
Sep 2002	245	24	27.44	3.64	$6,810
Aug 2002	227	31	25.96	3.16	$5,991
Jul 2002	212	30	24.58	3.06	$5,303
Jun 2002	164	29	23.73	3.34	$3,989
May 2002	174	31	24.66	3.58	$4,402
Apr 2002	163	32	23.65	3.51	$3,967
Mar 2002	159	23	22.00	3.10	$3,569
Feb 2002	166	0	18.22	2.38	$3,025
Jan 2002	165	25	17.17	2.38	$2,892
Dec 2001	118	28	16.93	2.36	$2,064
Nov 2001	124	26	18.07	2.41	$2,303
Oct 2001	129	30	19.78	2.53	$2,627
Sep 2001	129	29	24.26	2.25	$3,195
Aug 2001	122	29	24.87	3.05	$3,123
Jul 2001	127	29	23.93	3.20	$3,132
Jun 2001	131	29	24.56	3.82	$3,328
May 2001	128	27	25.52	4.31	$3,383
Apr 2001	133	30	24.68	5.34	$3,443
Mar 2001	129	27	24.54	5.38	$3,311
Feb 2001	117	24	27.75	5.77	$3,385
Jan 2001	70	0	27.47	8.40	$1,923
Dec 2000	111	0	26.88	9.12	$2,984
Nov 2000	117	0	32.21	5.66	$3,769
Oct 2000	101	2	31.23	5.15	$3,165
Sep 2000	86	1	31.87	5.19	$2,746
Aug 2000	78	1	29.64	4.54	$2,316
Jul 2000	121	0	28.53	4.09	$3,452
Jun 2000	111	1	29.30	4.40	$3,257
May 2000	101	1	27.26	3.68	$2,757
Apr 2000	101	1	24.51	3.12	$2,479
Mar 2000	72	1	28.42	2.86	$2,049
Feb 2000	64	1	27.62	2.73	$1,770
Jan 2000	59	1	25.27	2.48	$1,493
Dec 1999	64	1	24.28	2.42	$1,556
Nov 1999	77	1	23.19	2.43	$1,788
Oct 1999	88	1	20.98	2.80	$1,849
Sep 1999	90	1	21.75	2.62	$1,960
Aug 1999	76	1	19.26	2.88	$1,467
Jul 1999	60	1	17.89	2.37	$1,076
Jun 1999	90	1	15.94	2.36	$1,437
May 1999	108	1	15.79	2.32	$1,708
Apr 1999	122	1	15.10	2.21	$1,844
Mar 1999	80	3	12.47	1.84	$1,003
Feb 1999	107	3	9.98	1.82	$1,073
Jan 1999	81	6	10.38	1.90	$852
Dec 1998	111	25	9.20	1.77	$1,066
Nov 1998	107	32	10.89	2.19	$1,235
Oct 1998	100	39	12.42	1.97	$1,319
Sep 1998	114	52	12.59	2.08	$1,544
Aug 1998	130	25	11.30	1.91	$1,517
Jul 1998	117	68	11.74	2.24	$1,526
Jun 1998	112	56	11.24	2.24	$1,384
May 1998	122	24	12.62	2.21	$1,593
Apr 1998	107	5	13.04	2.51	$1,408
Mar 1998	119	1	12.80	2.31	$1,526
Feb 1998	123	1	13.95	2.30	$1,718
Jan 1998	114	1	14.70	2.15	$1,678
Dec 1997	132	6	16.32	2.41	$2,169
Nov 1997	128	32	18.19	3.09	$2,427
Oct 1997	149	26	19.25	3.15	$2,950
Sep 1997	147	69	17.74	2.95	$2,812
Aug 1997	160	83	17.86	2.55	$3,070
Jul 1997	159	84	17.58	2.25	$2,984
Jun 1997	113	76	17.24	2.26	$2,120
May 1997	221	76	18.97	2.31	$4,368
Apr 1997	212	45	17.88	2.08	$3,884
Mar 1997	211	42	18.95	1.94	$4,080
Feb 1997	259	38	20.49	2.21	$5,391
Jan 1997	157	38	23.48	3.54	$3,821
Dec 1996	184	41	23.32	—	$4,291
Nov 1996	118	53	21.97	—	$2,592
Oct 1996	125	52	23.31	—	$2,914
Sep 1996	122	61	22.22	—	$2,711
Aug 1996	117	63	20.26	—	$2,370
Jul 1996	125	62	19.55	—	$2,444
Jun 1996	169	65	18.73	—	$3,165
May 1996	184	67	19.43	—	$3,575
Apr 1996	154	58	21.51	—	$3,313
Mar 1996	178	59	19.38	—	$3,450
Feb 1996	243	47	16.98	—	$4,126
Jan 1996	268	41	17.07	—	$4,575
Dec 1995	177	38	17.19	—	$3,043
Nov 1995	248	41	16.00	—	$3,968
Oct 1995	266	101	15.43	—	$4,104
Sep 1995	324	59	16.18	—	$5,242
Aug 1995	148	62	15.92	—	$2,356
Jul 1995	137	64	15.24	—	$2,088
Jun 1995	144	60	16.41	—	$2,363
May 1995	237	153	17.56	—	$4,162
Apr 1995	310	146	17.73	—	$5,496
Mar 1995	279	153	16.44	—	$4,587
Feb 1995	147	113	16.58	—	$2,437
Jan 1995	144	97	15.92	—	$2,292
Dec 1994	0	0	15.03	—	$0
Nov 1994	0	0	15.90	—	$0
Oct 1994	0	0	15.58	—	$0
Sep 1994	9	0	15.29	—	$138
Aug 1994	330	48	16.13	—	$5,323
Jul 1994	375	24	17.56	—	$6,585
Jun 1994	285	8	17.09	—	$4,871
May 1994	328	2	15.88	—	$5,209
Apr 1994	246	2	14.14	—	$3,478
Mar 1994	293	7	12.46	—	$3,651
Feb 1994	280	2	12.50	—	$3,500
Jan 1994	347	1	12.66	—	$4,393
Dec 1993	349	1	12.33	—	$4,303
Nov 1993	301	36	14.49	—	$4,361
Oct 1993	390	92	15.85	—	$6,182
Sep 1993	343	88	15.03	—	$5,155
Aug 1993	297	35	15.66	—	$4,651
Jul 1993	514	1	15.46	—	$7,946
Jun 1993	298	18	16.79	—	$5,003
May 1993	442	104	17.68	—	$7,815
Apr 1993	455	104	18.05	—	$8,213
Mar 1993	402	63	18.14	—	$7,292
Feb 1993	428	23	17.90	—	$7,661
Jan 1993	531	24	16.93	—	$8,990

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                  230 bbl  × $ 95.72 =    $22,016
Casinghead gas        83 Mcf  × $  3.31 =       $275

────────────────────────────────────────────────────
Month total                                  $22,290

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/2684 is the state's own key, not one this site invented.