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 (GLORIETA) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 18986District 08Field 42971332Hydrogen sulphide fieldNGPA filingOilCasinghead gasSave Export

Value, all time

$7.7 M

Jan 1993 – Apr 2012

Value, last 12 filed months

$583 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	5	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	212,017 bbl	$7,610,007
Casinghead gas	Production	29,642 Mcf	$84,394
Total			$7,694,402

10,953 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 (10)

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 32.1188, -101.2631. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.4 miles.

32.11883, -101.26306 · 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%

10 of 10 wells

With a plug date

50.0%

5 of 10 wells

Median depth

3,100 ft

9 wells filed one

Completion to plug

21.8 years

median over 5 wells

What the state filed about each well

On the RRC proration schedule

10100.0%

A plug date is filed

550.0%

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

550.0%

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, 9 of 10 wells. Median 3,100 ft, with the middle half between 3,049 and 3,100 ft; the shallowest is 2,961 ft and the deepest 3,350 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, 9 of 10 wells, Jun 1980 – 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

Jun 1980 – Jun 2019

9 of 10 wells; 1 filed none

Plug dates filed

Jan 2005 – Jun 2021

5 of 10 wells; 5 filed none

Last completion to plug: a median of 21.8 years across the 5 wells that filed both dates, with the middle half between 11.7 years and 24.6 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

10 wells


42-22710053	15 L	—	—	—	Yes
42-22700503	12	2,961 ft	Jun 2019	—	Yes
42-22710051	13 L	3,049 ft	Apr 2014	—	Yes
42-22710052	14 L	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
42-22732769	23	3,350 ft	Mar 1983	Jan 2005	Yes
42-22732158	22	3,100 ft	Sep 1980	Jun 2021	Yes
42-22732157	21	3,100 ft	Jun 1980	Jan 2005	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	730	197	95.72	3.31	$70,528
Oct 2011	880	171	84.98	3.65	$75,406
Sep 2011	823	136	83.62	3.99	$69,361
Aug 2011	970	129	83.40	4.15	$81,433
Jul 2011	1,074	139	94.14	4.52	$101,734
Jun 2011	1,106	0	92.90	4.64	$102,747
May 2011	829	8	98.13	4.40	$81,385
Apr 2011	930	26	105.96	4.33	$98,655
Mar 2011	528	19	96.36	4.06	$50,955
Feb 2011	602	55	85.64	4.18	$51,785
Jan 2011	782	95	86.50	4.59	$68,079
Dec 2010	1,000	49	85.73	4.35	$85,943
Nov 2010	1,134	82	80.84	3.80	$91,984
Oct 2010	1,187	150	78.10	3.51	$93,231
Sep 2010	1,105	140	72.63	3.98	$80,813
Aug 2010	1,002	181	73.68	4.42	$74,627
Jul 2010	833	176	72.55	4.74	$61,268
Jun 2010	811	192	70.36	4.91	$58,005
May 2010	1,052	181	71.12	4.24	$75,585
Apr 2010	976	97	81.69	4.12	$80,129
Mar 2010	1,063	191	78.39	4.39	$84,167
Feb 2010	990	163	73.58	5.44	$73,731
Jan 2010	885	207	74.36	5.96	$67,043
Dec 2009	855	171	71.44	5.48	$62,019
Nov 2009	752	152	74.59	3.75	$56,662
Oct 2009	952	101	72.54	4.11	$69,473
Sep 2009	1,054	88	65.54	3.06	$69,349
Aug 2009	759	106	67.42	3.22	$51,513
Jul 2009	655	65	61.13	3.46	$40,265
Jun 2009	652	87	66.16	3.90	$43,475
May 2009	535	54	54.74	3.93	$29,498
Apr 2009	467	80	46.77	3.59	$22,129
Mar 2009	537	83	42.14	4.06	$22,966
Feb 2009	523	76	32.81	4.63	$17,512
Jan 2009	582	80	35.86	5.37	$21,300
Dec 2008	538	38	37.10	5.98	$20,187
Nov 2008	523	26	55.49	6.86	$29,200
Oct 2008	607	42	75.24	6.92	$45,961
Sep 2008	697	36	101.76	7.88	$71,210
Aug 2008	693	44	114.22	8.48	$79,528
Jul 2008	664	40	131.08	11.39	$87,493
Jun 2008	572	39	131.33	13.03	$75,629
May 2008	656	68	123.17	11.57	$81,587
Apr 2008	672	77	110.31	10.45	$74,933
Mar 2008	690	79	101.90	9.66	$71,074
Feb 2008	641	80	92.53	8.77	$60,013
Jan 2008	707	72	90.38	8.21	$64,489
Dec 2007	557	64	88.33	7.30	$49,667
Nov 2007	565	51	91.67	7.29	$52,165
Oct 2007	746	69	82.85	6.92	$62,284
Sep 2007	760	75	75.84	6.24	$58,107
Aug 2007	766	71	69.06	6.39	$53,354
Jul 2007	735	43	70.90	6.39	$52,386
Jun 2007	608	45	62.00	7.55	$38,036
May 2007	471	36	58.74	7.85	$27,949
Apr 2007	604	55	59.61	7.81	$36,434
Mar 2007	734	55	56.92	7.30	$42,181
Feb 2007	667	40	55.10	8.22	$37,080
Jan 2007	651	35	50.30	6.73	$32,981
Dec 2006	743	49	56.65	6.92	$42,430
Nov 2006	729	57	54.20	7.62	$39,946
Oct 2006	768	61	54.90	6.01	$42,530
Sep 2006	653	49	60.08	5.04	$39,479
Aug 2006	639	49	68.71	7.34	$44,265
Jul 2006	763	46	69.37	6.34	$53,221
Jun 2006	712	27	66.28	6.38	$47,364
May 2006	818	159	66.01	6.42	$55,018
Apr 2006	753	178	64.39	7.36	$49,796
Mar 2006	789	161	56.70	7.08	$45,877
Feb 2006	720	119	57.59	7.75	$42,387
Jan 2006	747	102	60.59	8.93	$46,172
Dec 2005	660	81	54.94	13.42	$37,347
Nov 2005	696	104	54.69	10.59	$39,165
Oct 2005	653	76	58.34	13.80	$39,145
Sep 2005	646	53	61.45	12.08	$40,337
Aug 2005	674	0	61.51	9.80	$41,458
Jul 2005	702	95	55.69	7.84	$39,840
Jun 2005	694	61	52.33	7.38	$36,767
May 2005	807	98	45.22	6.65	$37,144
Apr 2005	714	111	49.20	7.36	$35,946
Mar 2005	673	104	50.37	7.15	$34,643
Feb 2005	654	87	45.22	6.31	$30,123
Jan 2005	648	49	43.16	6.32	$28,277
Dec 2004	648	109	39.86	6.75	$26,565
Nov 2004	689	116	45.28	6.33	$31,932
Oct 2004	736	118	49.70	6.52	$37,348
Sep 2004	900	127	43.24	5.28	$39,587
Aug 2004	740	129	42.37	5.55	$32,070
Jul 2004	746	136	38.28	6.08	$29,384
Jun 2004	718	125	36.10	6.43	$26,724
May 2004	822	129	37.48	6.49	$31,646
Apr 2004	791	133	34.47	5.86	$28,045
Mar 2004	911	134	34.36	5.53	$32,043
Feb 2004	761	120	32.45	5.51	$25,356
Jan 2004	768	126	32.03	6.30	$25,393
Dec 2003	781	134	30.26	6.30	$24,477
Nov 2003	770	138	28.80	4.60	$22,810
Oct 2003	854	130	28.17	4.76	$24,676
Sep 2003	854	129	26.31	4.75	$23,081
Aug 2003	920	156	29.76	5.13	$28,179
Jul 2003	930	159	29.41	5.17	$28,173
Jun 2003	816	140	28.56	5.98	$24,143
May 2003	878	148	26.59	5.97	$24,230
Apr 2003	816	124	26.67	5.41	$22,433
Mar 2003	861	128	31.14	6.10	$27,592
Feb 2003	747	112	33.48	7.93	$25,897
Jan 2003	773	106	30.31	5.58	$24,021
Dec 2002	866	116	26.91	4.85	$23,867
Nov 2002	818	0	24.66	4.14	$20,172
Oct 2002	904	140	26.46	4.23	$24,512
Sep 2002	799	107	27.44	3.64	$22,314
Aug 2002	731	140	25.96	3.16	$19,420
Jul 2002	686	135	24.58	3.06	$17,275
Jun 2002	751	126	23.73	3.34	$18,242
May 2002	797	136	24.66	3.58	$20,141
Apr 2002	748	140	23.65	3.51	$18,182
Mar 2002	751	115	22.00	3.10	$16,879
Feb 2002	784	0	18.22	2.38	$14,284
Jan 2002	784	125	17.17	2.38	$13,758
Dec 2001	802	140	16.93	2.36	$13,909
Nov 2001	841	130	18.07	2.41	$15,510
Oct 2001	879	150	19.78	2.53	$17,766
Sep 2001	824	136	24.26	2.25	$20,296
Aug 2001	830	145	24.87	3.05	$21,085
Jul 2001	864	145	23.93	3.20	$21,139
Jun 2001	889	145	24.56	3.82	$22,388
May 2001	868	135	25.52	4.31	$22,733
Apr 2001	905	150	24.68	5.34	$23,136
Mar 2001	879	135	24.54	5.38	$22,296
Feb 2001	801	120	27.75	5.77	$22,920
Jan 2001	766	0	27.47	8.40	$21,042
Dec 2000	757	0	26.88	9.12	$20,348
Nov 2000	897	0	32.21	5.66	$28,892
Oct 2000	879	0	31.23	5.15	$27,451
Sep 2000	772	1	31.87	5.19	$24,609
Aug 2000	691	1	29.64	4.54	$20,486
Jul 2000	1,073	0	28.53	4.09	$30,613
Jun 2000	840	4	29.30	4.40	$24,630
May 2000	762	2	27.26	3.68	$20,779
Apr 2000	790	1	24.51	3.12	$19,366
Mar 2000	727	1	28.42	2.86	$20,664
Feb 2000	651	1	27.62	2.73	$17,983
Jan 2000	602	1	25.27	2.48	$15,215
Dec 1999	642	1	24.28	2.42	$15,590
Nov 1999	724	1	23.19	2.43	$16,792
Oct 1999	823	1	20.98	2.80	$17,269
Sep 1999	833	1	21.75	2.62	$18,120
Aug 1999	726	1	19.26	2.88	$13,986
Jul 1999	561	1	17.89	2.37	$10,039
Jun 1999	829	1	15.94	2.36	$13,217
May 1999	1,011	1	15.79	2.32	$15,966
Apr 1999	1,150	1	15.10	2.21	$17,367
Mar 1999	760	17	12.47	1.84	$9,508
Feb 1999	921	15	9.98	1.82	$9,219
Jan 1999	704	30	10.38	1.90	$7,365
Dec 1998	980	147	9.20	1.77	$9,277
Nov 1998	1,003	184	10.89	2.19	$11,325
Oct 1998	990	220	12.42	1.97	$12,729
Sep 1998	1,138	294	12.59	2.08	$14,940
Aug 1998	1,295	144	11.30	1.91	$14,908
Jul 1998	1,171	387	11.74	2.24	$14,613
Jun 1998	1,110	322	11.24	2.24	$13,197
May 1998	1,221	139	12.62	2.21	$15,716
Apr 1998	1,053	25	13.04	2.51	$13,794
Mar 1998	1,194	2	12.80	2.31	$15,288
Feb 1998	1,216	1	13.95	2.30	$16,966
Jan 1998	1,127	1	14.70	2.15	$16,569
Dec 1997	1,299	36	16.32	2.41	$21,286
Nov 1997	1,296	178	18.19	3.09	$24,124
Oct 1997	1,579	158	19.25	3.15	$30,893
Sep 1997	1,553	406	17.74	2.95	$28,750
Aug 1997	1,680	488	17.86	2.55	$31,252
Jul 1997	1,673	492	17.58	2.25	$30,517
Jun 1997	1,411	449	17.24	2.26	$25,339
May 1997	1,461	449	18.97	2.31	$28,752
Apr 1997	1,316	274	17.88	2.08	$24,101
Mar 1997	1,289	254	18.95	1.94	$24,919
Feb 1997	1,579	227	20.49	2.21	$32,854
Jan 1997	978	229	23.48	3.54	$23,774
Dec 1996	1,151	247	23.32	—	$26,841
Nov 1996	1,413	302	21.97	—	$31,044
Oct 1996	1,546	314	23.31	—	$36,037
Sep 1996	1,427	355	22.22	—	$31,708
Aug 1996	1,458	380	20.26	—	$29,539
Jul 1996	1,467	366	19.55	—	$28,680
Jun 1996	1,355	392	18.73	—	$25,379
May 1996	1,577	403	19.43	—	$30,641
Apr 1996	1,197	343	21.51	—	$25,747
Mar 1996	1,403	356	19.38	—	$27,190
Feb 1996	1,157	268	16.98	—	$19,646
Jan 1996	1,408	272	17.07	—	$24,035
Dec 1995	1,154	320	17.19	—	$19,837
Nov 1995	1,251	252	16.00	—	$20,016
Oct 1995	1,489	701	15.43	—	$22,975
Sep 1995	1,201	388	16.18	—	$19,432
Aug 1995	1,690	427	15.92	—	$26,905
Jul 1995	1,254	444	15.24	—	$19,111
Jun 1995	1,341	420	16.41	—	$22,006
May 1995	1,027	358	17.56	—	$18,034
Apr 1995	1,351	338	17.73	—	$23,953
Mar 1995	1,218	356	16.44	—	$20,024
Feb 1995	934	325	16.58	—	$15,486
Jan 1995	641	226	15.92	—	$10,205
Dec 1994	1,400	233	15.03	—	$21,042
Nov 1994	1,109	349	15.90	—	$17,633
Oct 1994	1,481	167	15.58	—	$23,074
Sep 1994	1,561	72	15.29	—	$23,868
Aug 1994	1,225	113	16.13	—	$19,759
Jul 1994	1,200	51	17.56	—	$21,072
Jun 1994	1,145	17	17.09	—	$19,568
May 1994	1,292	3	15.88	—	$20,517
Apr 1994	986	2	14.14	—	$13,942
Mar 1994	1,153	15	12.46	—	$14,366
Feb 1994	995	6	12.50	—	$12,438
Jan 1994	1,055	1	12.66	—	$13,356
Dec 1993	1,439	1	12.33	—	$17,743
Nov 1993	1,304	84	14.49	—	$18,895
Oct 1993	1,366	216	15.85	—	$21,651
Sep 1993	1,322	218	15.03	—	$19,870
Aug 1993	1,332	80	15.66	—	$20,859
Jul 1993	1,184	1	15.46	—	$18,305
Jun 1993	1,173	37	16.79	—	$19,695
May 1993	1,320	240	17.68	—	$23,338
Apr 1993	1,370	240	18.05	—	$24,729
Mar 1993	1,252	146	18.14	—	$22,711
Feb 1993	1,165	51	17.90	—	$20,854
Jan 1993	1,350	57	16.93	—	$22,856

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                  730 bbl  × $ 95.72 =    $69,876
Casinghead gas       197 Mcf  × $  3.31 =       $652

────────────────────────────────────────────────────
Month total                                  $70,528

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/18986 is the state's own key, not one this site invented.