GRINDSTAFF

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

Operated by DELTEX MINERALS INC. (P-5 214093) in the MCLARTY (GOEN) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 12875District 7CField 59699500OilCasinghead gasSave Export

Value, all time

$228 k

Jan 1993 – Sep 2003

Value, last 12 filed months

$3 k

at the published price for each month

Months reported

129

no gaps in the span

Streams

oil, casinghead gas

The MCLARTY (GOEN) 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 15 leases and 28 wells, and the rule below applies to all of them.

Discovered

1983-01-07

as the register files it

Field class

Oil and gas

the register's own label

Between wells

—

no field rule filed

From a lease line

—

no field rule filed

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	12,066 bbl	$216,878
Casinghead gas	Production	9,629 Mcf	$11,117
Total			$227,994

5,537 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 (3)

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 31.8291, -99.8779. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.3 miles.

31.82923, -99.87826 · 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%

3 of 3 wells

With a plug date

100.0%

3 of 3 wells

Median depth

4,210 ft

3 wells filed one

Completion to plug

10.2 years

median over 3 wells

What the state filed about each well

On the RRC proration schedule

3100.0%

A plug date is filed

3100.0%

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

3100.0%

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

Between 4,195 and 4,600 ft, median 4,210 ft, over the 3 wells that filed a depth.

Completions filed

Apr 1991 – May 2003

3 of 3 wells

Plug dates filed

Jul 1992 – Aug 2016

3 of 3 wells

Last completion to plug: a median of 10.2 years across the 3 wells that filed both dates, with the middle half between 5.8 years and 16.8 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

3 wells


42-39934164	6	4,210 ft	May 2003	Jul 2013	Yes
42-39934084	5	4,195 ft	Apr 1993	Aug 2016	Yes
42-39932926	4	4,600 ft	Apr 1991	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 (129)

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

129 months


Sep 2003	0	0	26.31	4.75	$0
Aug 2003	0	0	29.76	5.13	$0
Jul 2003	0	0	29.41	5.17	$0
Jun 2003	0	0	28.56	5.98	$0
May 2003	47	0	26.59	5.97	$1,250
Apr 2003	0	0	26.67	5.41	$0
Mar 2003	0	0	31.14	6.10	$0
Feb 2003	0	0	33.48	7.93	$0
Jan 2003	0	0	30.31	5.58	$0
Dec 2002	0	0	26.91	4.85	$0
Nov 2002	0	0	24.66	4.14	$0
Oct 2002	49	0	26.46	4.23	$1,297
Sep 2002	0	0	27.44	3.64	$0
Aug 2002	0	0	25.96	3.16	$0
Jul 2002	0	0	24.58	3.06	$0
Jun 2002	0	0	23.73	3.34	$0
May 2002	0	0	24.66	3.58	$0
Apr 2002	0	0	23.65	3.51	$0
Mar 2002	0	0	22.00	3.10	$0
Feb 2002	0	0	18.22	2.38	$0
Jan 2002	0	3	17.17	2.38	$7
Dec 2001	0	8	16.93	2.36	$19
Nov 2001	113	23	18.07	2.41	$2,097
Oct 2001	89	24	19.78	2.53	$1,821
Sep 2001	83	25	24.26	2.25	$2,070
Aug 2001	90	35	24.87	3.05	$2,345
Jul 2001	171	126	23.93	3.20	$4,495
Jun 2001	0	0	24.56	3.82	$0
May 2001	0	0	25.52	4.31	$0
Apr 2001	0	0	24.68	5.34	$0
Mar 2001	0	0	24.54	5.38	$0
Feb 2001	0	0	27.75	5.77	$0
Jan 2001	0	0	27.47	8.40	$0
Dec 2000	64	9	26.88	9.12	$1,802
Nov 2000	170	62	32.21	5.66	$5,827
Oct 2000	0	16	31.23	5.15	$82
Sep 2000	172	57	31.87	5.19	$5,777
Aug 2000	89	79	29.64	4.54	$2,997
Jul 2000	169	130	28.53	4.09	$5,353
Jun 2000	0	98	29.30	4.40	$431
May 2000	90	73	27.26	3.68	$2,722
Apr 2000	90	139	24.51	3.12	$2,639
Mar 2000	180	72	28.42	2.86	$5,322
Feb 2000	0	54	27.62	2.73	$147
Jan 2000	90	57	25.27	2.48	$2,416
Dec 1999	86	49	24.28	2.42	$2,207
Nov 1999	175	32	23.19	2.43	$4,136
Oct 1999	0	60	20.98	2.80	$168
Sep 1999	0	49	21.75	2.62	$128
Aug 1999	0	0	19.26	2.88	$0
Jul 1999	0	0	17.89	2.37	$0
Jun 1999	0	0	15.94	2.36	$0
May 1999	0	0	15.79	2.32	$0
Apr 1999	0	0	15.10	2.21	$0
Mar 1999	150	62	12.47	1.84	$1,984
Feb 1999	81	69	9.98	1.82	$934
Jan 1999	135	74	10.38	1.90	$1,542
Dec 1998	160	34	9.20	1.77	$1,532
Nov 1998	77	73	10.89	2.19	$998
Oct 1998	78	104	12.42	1.97	$1,174
Sep 1998	146	81	12.59	2.08	$2,007
Aug 1998	77	120	11.30	1.91	$1,099
Jul 1998	150	114	11.74	2.24	$2,016
Jun 1998	80	114	11.24	2.24	$1,154
May 1998	79	139	12.62	2.21	$1,304
Apr 1998	160	147	13.04	2.51	$2,455
Mar 1998	75	144	12.80	2.31	$1,293
Feb 1998	150	111	13.95	2.30	$2,348
Jan 1998	157	120	14.70	2.15	$2,566
Dec 1997	79	94	16.32	2.41	$1,516
Nov 1997	155	137	18.19	3.09	$3,243
Oct 1997	151	149	19.25	3.15	$3,376
Sep 1997	80	96	17.74	2.95	$1,703
Aug 1997	155	133	17.86	2.55	$3,108
Jul 1997	80	145	17.58	2.25	$1,732
Jun 1997	217	124	17.24	2.26	$4,021
May 1997	78	107	18.97	2.31	$1,727
Apr 1997	156	90	17.88	2.08	$2,977
Mar 1997	157	91	18.95	1.94	$3,152
Feb 1997	156	76	20.49	2.21	$3,364
Jan 1997	157	64	23.48	3.54	$3,913
Dec 1996	163	59	23.32	—	$3,801
Nov 1996	156	83	21.97	—	$3,427
Oct 1996	139	97	23.31	—	$3,240
Sep 1996	37	87	22.22	—	$822
Aug 1996	72	105	20.26	—	$1,459
Jul 1996	73	127	19.55	—	$1,427
Jun 1996	108	126	18.73	—	$2,023
May 1996	107	133	19.43	—	$2,079
Apr 1996	36	113	21.51	—	$774
Mar 1996	93	99	19.38	—	$1,802
Feb 1996	73	103	16.98	—	$1,240
Jan 1996	108	68	17.07	—	$1,844
Dec 1995	106	107	17.19	—	$1,822
Nov 1995	73	88	16.00	—	$1,168
Oct 1995	142	77	15.43	—	$2,191
Sep 1995	94	100	16.18	—	$1,521
Aug 1995	170	80	15.92	—	$2,706
Jul 1995	67	84	15.24	—	$1,021
Jun 1995	86	118	16.41	—	$1,411
May 1995	87	115	17.56	—	$1,528
Apr 1995	87	109	17.73	—	$1,543
Mar 1995	90	89	16.44	—	$1,480
Feb 1995	92	72	16.58	—	$1,525
Jan 1995	92	102	15.92	—	$1,465
Dec 1994	91	90	15.03	—	$1,368
Nov 1994	90	73	15.90	—	$1,431
Oct 1994	92	89	15.58	—	$1,433
Sep 1994	97	69	15.29	—	$1,483
Aug 1994	171	38	16.13	—	$2,758
Jul 1994	175	81	17.56	—	$3,073
Jun 1994	173	82	17.09	—	$2,957
May 1994	85	93	15.88	—	$1,350
Apr 1994	170	84	14.14	—	$2,404
Mar 1994	171	1	12.46	—	$2,131
Feb 1994	174	103	12.50	—	$2,175
Jan 1994	84	134	12.66	—	$1,063
Dec 1993	264	120	12.33	—	$3,255
Nov 1993	81	118	14.49	—	$1,174
Oct 1993	87	110	15.85	—	$1,379
Sep 1993	173	130	15.03	—	$2,600
Aug 1993	85	135	15.66	—	$1,331
Jul 1993	336	130	15.46	—	$5,195
Jun 1993	172	157	16.79	—	$2,888
May 1993	344	224	17.68	—	$6,082
Apr 1993	349	321	18.05	—	$6,299
Mar 1993	168	315	18.14	—	$3,048
Feb 1993	337	246	17.90	—	$6,032
Jan 1993	353	253	16.93	—	$5,976

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.

May 2003 — as filed, then multipliedworked

Oil                   47 bbl  × $ 26.59 =     $1,250
Casinghead gas         0 Mcf  × $  5.97 =         $0

────────────────────────────────────────────────────
Month total                                   $1,250

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. 7C/O/12875 is the state's own key, not one this site invented.