CHALK

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

Operated by SAHARA OPERATING COMPANY (P-5 743279) 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 19832District 08Field 42971001Hydrogen sulphide fieldOilCasinghead gasSave Export

Value, all time

$1.1 M

Jan 1993 – Jul 2012

Value, last 12 filed months

$37 k

at the published price for each month

Months reported

235

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	31,297 bbl	$1,132,496
Casinghead gas	Production	21 Mcf	$0
Total			$1,132,496

21 Mcf of this lease's gas, across 21 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 (7)

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 32.1414, -101.2516. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.5 miles.

32.14155, -101.25041 · 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%

7 of 7 wells

With a plug date

28.6%

2 of 7 wells

Median depth

2,998 ft

3 wells filed one

Completion to plug

35.3 years

median over 1 well

What the state filed about each well

On the RRC proration schedule

7100.0%

A plug date is filed

228.6%

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

228.6%

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

Between 2,903 and 3,008 ft, median 2,998 ft, over the 3 wells that filed a depth.

Completions filed

Oct 1973 – Mar 1997

2 of 7 wells; 5 filed none

Plug dates filed

Dec 1978 – Feb 2009

2 of 7 wells; 5 filed none

Last completion to plug: a median of 35.3 years across the 1 well that filed both dates, with the middle half between 35.3 years and 35.3 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

7 wells


42-22702157	4	—	—	—	Yes
42-22702723	1 U	2,903 ft	—	Dec 1978	Yes
42-22702791	2	—	—	—	Yes
42-22710361	3	—	—	—	Yes
42-22710830	4 L	—	—	—	Yes
42-22730480	4W	3,008 ft	Mar 1997	—	Yes
42-22730478	1W	2,998 ft	Oct 1973	Feb 2009	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 (235)

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

235 months


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	133	0	95.72	3.31	$12,731
Oct 2011	91	0	84.98	3.65	$7,733
Sep 2011	104	0	83.62	3.99	$8,696
Aug 2011	90	0	83.40	4.15	$7,506
Jul 2011	84	0	94.14	4.52	$7,908
Jun 2011	104	0	92.90	4.64	$9,662
May 2011	124	0	98.13	4.40	$12,168
Apr 2011	140	0	105.96	4.33	$14,834
Mar 2011	86	0	96.36	4.06	$8,287
Feb 2011	60	0	85.64	4.18	$5,138
Jan 2011	113	0	86.50	4.59	$9,775
Dec 2010	99	0	85.73	4.35	$8,487
Nov 2010	118	0	80.84	3.80	$9,539
Oct 2010	90	0	78.10	3.51	$7,029
Sep 2010	208	0	72.63	3.98	$15,107
Aug 2010	0	0	73.68	4.42	$0
Jul 2010	106	0	72.55	4.74	$7,690
Jun 2010	165	0	70.36	4.91	$11,609
May 2010	38	0	71.12	4.24	$2,703
Apr 2010	117	0	81.69	4.12	$9,558
Mar 2010	106	0	78.39	4.39	$8,309
Feb 2010	101	0	73.58	5.44	$7,432
Jan 2010	101	0	74.36	5.96	$7,510
Dec 2009	131	0	71.44	5.48	$9,359
Nov 2009	82	0	74.59	3.75	$6,116
Oct 2009	100	0	72.54	4.11	$7,254
Sep 2009	81	0	65.54	3.06	$5,309
Aug 2009	91	0	67.42	3.22	$6,135
Jul 2009	95	0	61.13	3.46	$5,807
Jun 2009	98	0	66.16	3.90	$6,484
May 2009	118	0	54.74	3.93	$6,459
Apr 2009	98	0	46.77	3.59	$4,583
Mar 2009	109	0	42.14	4.06	$4,593
Feb 2009	127	0	32.81	4.63	$4,167
Jan 2009	271	0	35.86	5.37	$9,718
Dec 2008	0	0	37.10	5.98	$0
Nov 2008	123	0	55.49	6.86	$6,825
Oct 2008	56	0	75.24	6.92	$4,213
Sep 2008	111	0	101.76	7.88	$11,295
Aug 2008	123	0	114.22	8.48	$14,049
Jul 2008	119	0	131.08	11.39	$15,599
Jun 2008	109	0	131.33	13.03	$14,315
May 2008	100	0	123.17	11.57	$12,317
Apr 2008	101	0	110.31	10.45	$11,141
Mar 2008	124	0	101.90	9.66	$12,636
Feb 2008	142	0	92.53	8.77	$13,139
Jan 2008	110	0	90.38	8.21	$9,942
Dec 2007	128	0	88.33	7.30	$11,306
Nov 2007	143	0	91.67	7.29	$13,109
Oct 2007	111	0	82.85	6.92	$9,196
Sep 2007	119	0	75.84	6.24	$9,025
Aug 2007	130	0	69.06	6.39	$8,978
Jul 2007	115	0	70.90	6.39	$8,154
Jun 2007	103	0	62.00	7.55	$6,386
May 2007	138	0	58.74	7.85	$8,106
Apr 2007	114	0	59.61	7.81	$6,796
Mar 2007	122	0	56.92	7.30	$6,944
Feb 2007	170	0	55.10	8.22	$9,367
Jan 2007	56	0	50.30	6.73	$2,817
Dec 2006	134	0	56.65	6.92	$7,591
Nov 2006	126	0	54.20	7.62	$6,829
Oct 2006	86	0	54.90	6.01	$4,721
Sep 2006	115	0	60.08	5.04	$6,909
Aug 2006	126	0	68.71	7.34	$8,657
Jul 2006	127	0	69.37	6.34	$8,810
Jun 2006	145	0	66.28	6.38	$9,611
May 2006	146	0	66.01	6.42	$9,637
Apr 2006	129	0	64.39	7.36	$8,306
Mar 2006	107	0	56.70	7.08	$6,067
Feb 2006	98	0	57.59	7.75	$5,644
Jan 2006	112	0	60.59	8.93	$6,786
Dec 2005	182	0	54.94	13.42	$9,999
Nov 2005	0	0	54.69	10.59	$0
Oct 2005	126	0	58.34	13.80	$7,351
Sep 2005	62	0	61.45	12.08	$3,810
Aug 2005	131	0	61.51	9.80	$8,058
Jul 2005	104	0	55.69	7.84	$5,792
Jun 2005	151	0	52.33	7.38	$7,902
May 2005	94	0	45.22	6.65	$4,251
Apr 2005	105	0	49.20	7.36	$5,166
Mar 2005	168	0	50.37	7.15	$8,462
Feb 2005	75	0	45.22	6.31	$3,392
Jan 2005	146	0	43.16	6.32	$6,301
Dec 2004	234	0	39.86	6.75	$9,327
Nov 2004	98	0	45.28	6.33	$4,437
Oct 2004	97	0	49.70	6.52	$4,821
Sep 2004	126	0	43.24	5.28	$5,448
Aug 2004	125	0	42.37	5.55	$5,296
Jul 2004	134	0	38.28	6.08	$5,130
Jun 2004	121	0	36.10	6.43	$4,368
May 2004	99	0	37.48	6.49	$3,711
Apr 2004	426	0	34.47	5.86	$14,684
Mar 2004	119	0	34.36	5.53	$4,089
Feb 2004	151	0	32.45	5.51	$4,900
Jan 2004	121	0	32.03	6.30	$3,876
Dec 2003	159	0	30.26	6.30	$4,811
Nov 2003	97	0	28.80	4.60	$2,794
Oct 2003	172	0	28.17	4.76	$4,845
Sep 2003	111	0	26.31	4.75	$2,920
Aug 2003	130	0	29.76	5.13	$3,869
Jul 2003	185	0	29.41	5.17	$5,441
Jun 2003	112	0	28.56	5.98	$3,199
May 2003	142	0	26.59	5.97	$3,776
Apr 2003	121	0	26.67	5.41	$3,227
Mar 2003	173	0	31.14	6.10	$5,387
Feb 2003	144	0	33.48	7.93	$4,821
Jan 2003	167	0	30.31	5.58	$5,062
Dec 2002	147	0	26.91	4.85	$3,956
Nov 2002	138	0	24.66	4.14	$3,403
Oct 2002	141	0	26.46	4.23	$3,731
Sep 2002	158	0	27.44	3.64	$4,336
Aug 2002	195	0	25.96	3.16	$5,062
Jul 2002	162	0	24.58	3.06	$3,982
Jun 2002	124	0	23.73	3.34	$2,943
May 2002	335	0	24.66	3.58	$8,261
Apr 2002	0	0	23.65	3.51	$0
Mar 2002	158	0	22.00	3.10	$3,476
Feb 2002	175	0	18.22	2.38	$3,189
Jan 2002	181	0	17.17	2.38	$3,108
Dec 2001	190	0	16.93	2.36	$3,217
Nov 2001	164	0	18.07	2.41	$2,963
Oct 2001	225	0	19.78	2.53	$4,451
Sep 2001	159	0	24.26	2.25	$3,857
Aug 2001	218	0	24.87	3.05	$5,422
Jul 2001	185	0	23.93	3.20	$4,427
Jun 2001	207	0	24.56	3.82	$5,084
May 2001	247	0	25.52	4.31	$6,303
Apr 2001	192	0	24.68	5.34	$4,739
Mar 2001	89	0	24.54	5.38	$2,184
Feb 2001	158	0	27.75	5.77	$4,385
Jan 2001	145	0	27.47	8.40	$3,983
Dec 2000	86	0	26.88	9.12	$2,312
Nov 2000	92	0	32.21	5.66	$2,963
Oct 2000	111	0	31.23	5.15	$3,467
Sep 2000	108	0	31.87	5.19	$3,442
Aug 2000	118	0	29.64	4.54	$3,498
Jul 2000	101	0	28.53	4.09	$2,882
Jun 2000	67	0	29.30	4.40	$1,963
May 2000	109	0	27.26	3.68	$2,971
Apr 2000	108	0	24.51	3.12	$2,647
Mar 2000	129	0	28.42	2.86	$3,666
Feb 2000	126	0	27.62	2.73	$3,480
Jan 2000	128	0	25.27	2.48	$3,235
Dec 1999	115	0	24.28	2.42	$2,792
Nov 1999	138	0	23.19	2.43	$3,200
Oct 1999	125	0	20.98	2.80	$2,623
Sep 1999	125	0	21.75	2.62	$2,719
Aug 1999	110	0	19.26	2.88	$2,119
Jul 1999	107	0	17.89	2.37	$1,914
Jun 1999	139	0	15.94	2.36	$2,216
May 1999	140	0	15.79	2.32	$2,211
Apr 1999	125	0	15.10	2.21	$1,888
Mar 1999	160	0	12.47	1.84	$1,995
Feb 1999	107	0	9.98	1.82	$1,068
Jan 1999	94	0	10.38	1.90	$976
Dec 1998	102	0	9.20	1.77	$938
Nov 1998	156	0	10.89	2.19	$1,699
Oct 1998	113	0	12.42	1.97	$1,403
Sep 1998	128	0	12.59	2.08	$1,612
Aug 1998	119	0	11.30	1.91	$1,345
Jul 1998	139	0	11.74	2.24	$1,632
Jun 1998	119	0	11.24	2.24	$1,338
May 1998	140	0	12.62	2.21	$1,767
Apr 1998	149	0	13.04	2.51	$1,943
Mar 1998	163	0	12.80	2.31	$2,086
Feb 1998	119	0	13.95	2.30	$1,660
Jan 1998	148	0	14.70	2.15	$2,176
Dec 1997	154	0	16.32	2.41	$2,513
Nov 1997	134	0	18.19	3.09	$2,437
Oct 1997	163	0	19.25	3.15	$3,138
Sep 1997	116	0	17.74	2.95	$2,058
Aug 1997	129	0	17.86	2.55	$2,304
Jul 1997	132	0	17.58	2.25	$2,321
Jun 1997	189	0	17.24	2.26	$3,258
May 1997	128	0	18.97	2.31	$2,428
Apr 1997	138	0	17.88	2.08	$2,467
Mar 1997	131	0	18.95	1.94	$2,482
Feb 1997	151	0	20.49	2.21	$3,094
Jan 1997	102	0	23.48	3.54	$2,395
Dec 1996	141	0	23.32	—	$3,288
Nov 1996	122	0	21.97	—	$2,680
Oct 1996	142	0	23.31	—	$3,310
Sep 1996	179	0	22.22	—	$3,977
Aug 1996	142	0	20.26	—	$2,877
Jul 1996	288	0	19.55	—	$5,630
Jun 1996	0	0	18.73	—	$0
May 1996	163	0	19.43	—	$3,167
Apr 1996	229	0	21.51	—	$4,926
Mar 1996	219	0	19.38	—	$4,244
Feb 1996	0	0	16.98	—	$0
Jan 1996	158	0	17.07	—	$2,697
Dec 1995	152	0	17.19	—	$2,613
Nov 1995	125	0	16.00	—	$2,000
Oct 1995	173	0	15.43	—	$2,669
Sep 1995	379	0	16.18	—	$6,132
Aug 1995	0	0	15.92	—	$0
Jul 1995	222	0	15.24	—	$3,383
Jun 1995	0	0	16.41	—	$0
May 1995	199	0	17.56	—	$3,494
Apr 1995	241	0	17.73	—	$4,273
Mar 1995	238	0	16.44	—	$3,913
Feb 1995	0	0	16.58	—	$0
Jan 1995	247	0	15.92	—	$3,932
Dec 1994	244	0	15.03	—	$3,667
Nov 1994	235	0	15.90	—	$3,737
Oct 1994	0	0	15.58	—	$0
Sep 1994	241	1	15.29	—	$3,685
Aug 1994	220	1	16.13	—	$3,549
Jul 1994	225	1	17.56	—	$3,951
Jun 1994	233	1	17.09	—	$3,982
May 1994	238	1	15.88	—	$3,779
Apr 1994	0	1	14.14	—	$0
Mar 1994	229	1	12.46	—	$2,853
Feb 1994	234	1	12.50	—	$2,925
Jan 1994	233	1	12.66	—	$2,950
Dec 1993	0	1	12.33	—	$0
Nov 1993	221	1	14.49	—	$3,202
Oct 1993	228	1	15.85	—	$3,614
Sep 1993	226	1	15.03	—	$3,397
Aug 1993	219	1	15.66	—	$3,430
Jul 1993	227	1	15.46	—	$3,509
Jun 1993	0	1	16.79	—	$0
May 1993	228	1	17.68	—	$4,031
Apr 1993	228	1	18.05	—	$4,115
Mar 1993	248	1	18.14	—	$4,499
Feb 1993	210	1	17.90	—	$3,759
Jan 1993	243	1	16.93	—	$4,114

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                  133 bbl  × $ 95.72 =    $12,731
Casinghead gas         0 Mcf  × $  3.31 =         $0

────────────────────────────────────────────────────
Month total                                  $12,731

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/19832 is the state's own key, not one this site invented.