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 CIMAREX ENERGY CO. OF COLORADO (P-5 153429) 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 2834District 08Field 42971001Hydrogen sulphide fieldOilCasinghead gasSave Export

Value, all time

$8.3 M

Jan 1993 – Jul 2013

Value, last 12 filed months

at the published price for each month

Months reported

247

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	210,836 bbl	$8,189,800
Casinghead gas	Production	13,575 Mcf	$68,593
Total			$8,258,393

22 Mcf of this lease's gas, across 22 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 (19)

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 32.1265, -101.2463. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.5 miles.

32.12718, -101.24595 · 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%

19 of 19 wells

With a plug date

42.1%

8 of 19 wells

Median depth

2,268 ft

18 wells filed one

Completion to plug

31.2 years

median over 6 wells

What the state filed about each well

On the RRC proration schedule

19100.0%

A plug date is filed

842.1%

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

842.1%

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, 18 of 19 wells. Median 2,268 ft, with the middle half between 2,197 and 2,310 ft; the shallowest is 1,424 ft and the deepest 2,975 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, 16 of 19 wells, Oct 1968 – Nov 2018. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed

Oct 1968 – Nov 2018

16 of 19 wells; 3 filed none

Plug dates filed

Dec 1983 – Jul 2017

8 of 19 wells; 11 filed none

Last completion to plug: a median of 31.2 years across the 6 wells that filed both dates, with the middle half between 25.3 years and 43.1 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

19 wells


42-22701861	3	1,582 ft	—	Dec 1999	Yes
42-22701881	4	2,190 ft	—	Jul 2017	Yes
42-22730013	16	—	—	—	Yes
42-22703884	10	2,265 ft	Nov 2018	—	Yes
42-22730012	15	2,246 ft	Aug 2012	—	Yes
42-22710976	14	2,265 ft	Sep 2010	—	Yes
42-22710975	13	2,270 ft	Jul 1999	—	Yes
42-22735309	27	2,400 ft	Jun 1998	—	Yes
42-22730132	19	2,287 ft	Mar 1998	—	Yes
42-22703857	2W	2,921 ft	Mar 1986	Jun 2011	Yes
42-22730516	28W	1,441 ft	Jul 1973	Dec 1983	Yes
42-22730517	29W	1,424 ft	Jul 1973	Jun 2010	Yes
42-22730381	26	1,772 ft	May 1972	Jul 2017	Yes
42-22730158	22	2,298 ft	Jun 1970	—	Yes
42-22730157	20	2,314 ft	Apr 1970	—	Yes
42-22730156	21	2,315 ft	Apr 1970	Aug 1995	Yes
42-22730133	17	2,285 ft	Dec 1969	—	Yes
42-22730060	1 W	2,975 ft	Aug 1969	—	Yes
42-22710958	12	2,217 ft	Oct 1968	Apr 2016	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 (247)

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

247 months


Jul 2013	0	0	102.52	3.72	$0
Jun 2013	0	0	94.40	3.93	$0
May 2013	0	0	94.83	4.15	$0
Apr 2013	0	0	93.96	4.28	$0
Mar 2013	0	0	93.62	3.91	$0
Feb 2013	0	0	91.23	3.42	$0
Jan 2013	0	0	91.60	3.42	$0
Dec 2012	0	0	86.77	3.42	$0
Nov 2012	0	0	86.95	3.62	$0
Oct 2012	0	0	89.38	3.40	$0
Sep 2012	0	0	94.67	2.92	$0
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	764	0	95.72	3.31	$73,130
Oct 2011	972	88	84.98	3.65	$82,922
Sep 2011	723	78	83.62	3.99	$60,768
Aug 2011	1,090	0	83.40	4.15	$90,906
Jul 2011	1,203	0	94.14	4.52	$113,250
Jun 2011	808	0	92.90	4.64	$75,063
May 2011	891	9	98.13	4.40	$87,473
Apr 2011	604	15	105.96	4.33	$64,065
Mar 2011	790	41	96.36	4.06	$76,291
Feb 2011	863	0	85.64	4.18	$73,907
Jan 2011	756	27	86.50	4.59	$65,518
Dec 2010	1,108	34	85.73	4.35	$95,137
Nov 2010	897	68	80.84	3.80	$72,772
Oct 2010	1,157	15	78.10	3.51	$90,414
Sep 2010	647	21	72.63	3.98	$47,075
Aug 2010	841	147	73.68	4.42	$62,615
Jul 2010	934	157	72.55	4.74	$68,505
Jun 2010	735	127	70.36	4.91	$52,338
May 2010	858	138	71.12	4.24	$61,605
Apr 2010	750	215	81.69	4.12	$62,154
Mar 2010	346	151	78.39	4.39	$27,786
Feb 2010	560	66	73.58	5.44	$41,564
Jan 2010	468	60	74.36	5.96	$35,158
Dec 2009	633	35	71.44	5.48	$45,413
Nov 2009	568	13	74.59	3.75	$42,416
Oct 2009	679	21	72.54	4.11	$49,341
Sep 2009	583	26	65.54	3.06	$38,290
Aug 2009	825	33	67.42	3.22	$55,728
Jul 2009	895	0	61.13	3.46	$54,711
Jun 2009	813	42	66.16	3.90	$53,952
May 2009	644	47	54.74	3.93	$35,437
Apr 2009	625	63	46.77	3.59	$29,457
Mar 2009	550	84	42.14	4.06	$23,518
Feb 2009	438	67	32.81	4.63	$14,681
Jan 2009	468	83	35.86	5.37	$17,228
Dec 2008	633	91	37.10	5.98	$24,028
Nov 2008	664	91	55.49	6.86	$37,470
Oct 2008	753	82	75.24	6.92	$57,223
Sep 2008	924	55	101.76	7.88	$94,459
Aug 2008	812	87	114.22	8.48	$93,485
Jul 2008	931	87	131.08	11.39	$123,026
Jun 2008	843	88	131.33	13.03	$111,858
May 2008	935	97	123.17	11.57	$116,287
Apr 2008	938	100	110.31	10.45	$104,516
Mar 2008	986	112	101.90	9.66	$101,556
Feb 2008	940	122	92.53	8.77	$88,048
Jan 2008	874	128	90.38	8.21	$80,042
Dec 2007	1,136	138	88.33	7.30	$101,351
Nov 2007	954	140	91.67	7.29	$88,474
Oct 2007	956	141	82.85	6.92	$80,181
Sep 2007	1,019	127	75.84	6.24	$78,074
Aug 2007	1,029	134	69.06	6.39	$71,919
Jul 2007	1,016	128	70.90	6.39	$72,852
Jun 2007	929	143	62.00	7.55	$58,677
May 2007	1,040	164	58.74	7.85	$62,376
Apr 2007	908	152	59.61	7.81	$55,312
Mar 2007	996	142	56.92	7.30	$57,729
Feb 2007	1,047	116	55.10	8.22	$58,643
Jan 2007	849	132	50.30	6.73	$43,593
Dec 2006	880	142	56.65	6.92	$50,834
Nov 2006	920	139	54.20	7.62	$50,923
Oct 2006	1,065	149	54.90	6.01	$59,365
Sep 2006	806	104	60.08	5.04	$48,948
Aug 2006	1,002	95	68.71	7.34	$69,545
Jul 2006	882	56	69.37	6.34	$61,540
Jun 2006	909	55	66.28	6.38	$60,600
May 2006	1,072	61	66.01	6.42	$71,155
Apr 2006	1,105	56	64.39	7.36	$71,563
Mar 2006	1,189	62	56.70	7.08	$67,855
Feb 2006	798	55	57.59	7.75	$46,383
Jan 2006	1,095	56	60.59	8.93	$66,846
Dec 2005	1,292	51	54.94	13.42	$71,667
Nov 2005	1,025	58	54.69	10.59	$56,671
Oct 2005	900	63	58.34	13.80	$53,375
Sep 2005	936	47	61.45	12.08	$58,085
Aug 2005	1,093	67	61.51	9.80	$67,887
Jul 2005	875	81	55.69	7.84	$49,364
Jun 2005	894	73	52.33	7.38	$47,322
May 2005	1,087	74	45.22	6.65	$49,646
Apr 2005	942	67	49.20	7.36	$46,840
Mar 2005	1,152	130	50.37	7.15	$58,956
Feb 2005	895	63	45.22	6.31	$40,870
Jan 2005	1,019	49	43.16	6.32	$44,290
Dec 2004	983	65	39.86	6.75	$39,621
Nov 2004	947	60	45.28	6.33	$43,260
Oct 2004	1,146	66	49.70	6.52	$57,386
Sep 2004	887	56	43.24	5.28	$38,650
Aug 2004	1,142	58	42.37	5.55	$48,708
Jul 2004	886	59	38.28	6.08	$34,275
Jun 2004	883	53	36.10	6.43	$32,217
May 2004	1,075	52	37.48	6.49	$40,629
Apr 2004	1,039	67	34.47	5.86	$36,207
Mar 2004	1,195	69	34.36	5.53	$41,442
Feb 2004	801	73	32.45	5.51	$26,395
Jan 2004	831	68	32.03	6.30	$27,045
Dec 2003	1,021	64	30.26	6.30	$31,299
Nov 2003	904	85	28.80	4.60	$26,426
Oct 2003	1,074	69	28.17	4.76	$30,583
Sep 2003	1,128	36	26.31	4.75	$29,849
Aug 2003	1,235	31	29.76	5.13	$36,913
Jul 2003	1,230	24	29.41	5.17	$36,298
Jun 2003	1,212	17	28.56	5.98	$34,716
May 2003	1,435	26	26.59	5.97	$38,312
Apr 2003	1,189	29	26.67	5.41	$31,867
Mar 2003	1,202	23	31.14	6.10	$37,570
Feb 2003	1,032	39	33.48	7.93	$34,860
Jan 2003	1,422	59	30.31	5.58	$43,430
Dec 2002	1,302	121	26.91	4.85	$35,624
Nov 2002	1,138	70	24.66	4.14	$28,353
Oct 2002	1,097	64	26.46	4.23	$29,297
Sep 2002	1,163	84	27.44	3.64	$32,218
Aug 2002	904	75	25.96	3.16	$23,705
Jul 2002	966	56	24.58	3.06	$23,916
Jun 2002	1,004	72	23.73	3.34	$24,065
May 2002	1,224	22	24.66	3.58	$30,263
Apr 2002	792	12	23.65	3.51	$18,773
Mar 2002	862	4	22.00	3.10	$18,976
Feb 2002	524	8	18.22	2.38	$9,566
Jan 2002	817	0	17.17	2.38	$14,028
Dec 2001	709	11	16.93	2.36	$12,029
Nov 2001	818	36	18.07	2.41	$14,868
Oct 2001	772	71	19.78	2.53	$15,450
Sep 2001	844	58	24.26	2.25	$20,606
Aug 2001	1,006	55	24.87	3.05	$25,187
Jul 2001	834	52	23.93	3.20	$20,124
Jun 2001	768	54	24.56	3.82	$19,069
May 2001	532	47	25.52	4.31	$13,779
Apr 2001	603	62	24.68	5.34	$15,213
Mar 2001	543	61	24.54	5.38	$13,653
Feb 2001	616	65	27.75	5.77	$17,469
Jan 2001	625	31	27.47	8.40	$17,429
Dec 2000	498	40	26.88	9.12	$13,751
Nov 2000	580	42	32.21	5.66	$18,919
Oct 2000	662	63	31.23	5.15	$20,998
Sep 2000	658	64	31.87	5.19	$21,302
Aug 2000	498	65	29.64	4.54	$15,056
Jul 2000	503	63	28.53	4.09	$14,608
Jun 2000	570	53	29.30	4.40	$16,934
May 2000	554	86	27.26	3.68	$15,419
Apr 2000	459	73	24.51	3.12	$11,478
Mar 2000	684	74	28.42	2.86	$19,651
Feb 2000	607	66	27.62	2.73	$16,945
Jan 2000	731	142	25.27	2.48	$18,825
Dec 1999	610	142	24.28	2.42	$15,155
Nov 1999	685	141	23.19	2.43	$16,228
Oct 1999	606	157	20.98	2.80	$13,154
Sep 1999	681	207	21.75	2.62	$15,354
Aug 1999	705	224	19.26	2.88	$14,222
Jul 1999	597	211	17.89	2.37	$11,181
Jun 1999	701	199	15.94	2.36	$11,644
May 1999	806	279	15.79	2.32	$13,374
Apr 1999	709	433	15.10	2.21	$11,662
Mar 1999	723	283	12.47	1.84	$9,536
Feb 1999	732	170	9.98	1.82	$7,614
Jan 1999	738	277	10.38	1.90	$8,187
Dec 1998	718	293	9.20	1.77	$7,125
Nov 1998	672	334	10.89	2.19	$8,048
Oct 1998	831	312	12.42	1.97	$10,935
Sep 1998	724	0	12.59	2.08	$9,115
Aug 1998	708	0	11.30	1.91	$8,000
Jul 1998	931	0	11.74	2.24	$10,930
Jun 1998	754	0	11.24	2.24	$8,475
May 1998	750	0	12.62	2.21	$9,465
Apr 1998	680	0	13.04	2.51	$8,867
Mar 1998	759	0	12.80	2.31	$9,715
Feb 1998	739	0	13.95	2.30	$10,309
Jan 1998	856	0	14.70	2.15	$12,583
Dec 1997	771	0	16.32	2.41	$12,583
Nov 1997	895	0	18.19	3.09	$16,280
Oct 1997	738	0	19.25	3.15	$14,207
Sep 1997	838	0	17.74	2.95	$14,866
Aug 1997	824	0	17.86	2.55	$14,717
Jul 1997	856	0	17.58	2.25	$15,048
Jun 1997	1,012	0	17.24	2.26	$17,447
May 1997	761	0	18.97	2.31	$14,436
Apr 1997	884	0	17.88	2.08	$15,806
Mar 1997	877	0	18.95	1.94	$16,619
Feb 1997	831	0	20.49	2.21	$17,027
Jan 1997	857	0	23.48	3.54	$20,122
Dec 1996	759	0	23.32	—	$17,700
Nov 1996	899	0	21.97	—	$19,751
Oct 1996	761	0	23.31	—	$17,739
Sep 1996	897	0	22.22	—	$19,931
Aug 1996	807	0	20.26	—	$16,350
Jul 1996	1,144	0	19.55	—	$22,365
Jun 1996	1,136	0	18.73	—	$21,277
May 1996	1,233	0	19.43	—	$23,957
Apr 1996	948	0	21.51	—	$20,391
Mar 1996	958	0	19.38	—	$18,566
Feb 1996	1,141	0	16.98	—	$19,374
Jan 1996	1,183	0	17.07	—	$20,194
Dec 1995	1,164	0	17.19	—	$20,009
Nov 1995	1,137	0	16.00	—	$18,192
Oct 1995	1,132	0	15.43	—	$17,467
Sep 1995	1,140	0	16.18	—	$18,445
Aug 1995	1,125	0	15.92	—	$17,910
Jul 1995	985	0	15.24	—	$15,011
Jun 1995	1,134	0	16.41	—	$18,609
May 1995	1,145	0	17.56	—	$20,106
Apr 1995	1,128	0	17.73	—	$19,999
Mar 1995	1,130	0	16.44	—	$18,577
Feb 1995	997	0	16.58	—	$16,530
Jan 1995	1,166	0	15.92	—	$18,563
Dec 1994	1,179	0	15.03	—	$17,720
Nov 1994	1,108	0	15.90	—	$17,617
Oct 1994	1,294	1	15.58	—	$20,161
Sep 1994	1,020	1	15.29	—	$15,596
Aug 1994	1,308	1	16.13	—	$21,098
Jul 1994	1,160	1	17.56	—	$20,370
Jun 1994	1,216	1	17.09	—	$20,781
May 1994	1,187	1	15.88	—	$18,850
Apr 1994	1,359	1	14.14	—	$19,216
Mar 1994	1,366	1	12.46	—	$17,020
Feb 1994	1,218	1	12.50	—	$15,225
Jan 1994	1,349	1	12.66	—	$17,078
Dec 1993	1,482	1	12.33	—	$18,273
Nov 1993	1,347	1	14.49	—	$19,518
Oct 1993	1,630	1	15.85	—	$25,836
Sep 1993	1,352	1	15.03	—	$20,321
Aug 1993	1,472	1	15.66	—	$23,052
Jul 1993	1,420	1	15.46	—	$21,953
Jun 1993	1,641	1	16.79	—	$27,552
May 1993	1,366	1	17.68	—	$24,151
Apr 1993	1,510	1	18.05	—	$27,256
Mar 1993	1,393	1	18.14	—	$25,269
Feb 1993	1,345	1	17.90	—	$24,076
Jan 1993	1,509	1	16.93	—	$25,547

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                  764 bbl  × $ 95.72 =    $73,130
Casinghead gas         0 Mcf  × $  3.31 =         $0

────────────────────────────────────────────────────
Month total                                  $73,130

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/2834 is the state's own key, not one this site invented.