CASSIN

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

Operated by SOUTH LOOP OPERATING, L.C. (P-5 802704) in the MONKSFIELD (350 SAND) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 10570District 01Field 62480500OilCasinghead gasSave Export

Value, all time

$437 k

Jan 1993 – Sep 2006

Value, last 12 filed months

$21 k

at the published price for each month

Months reported

165

no gaps in the span

Streams

oil, casinghead gas

The MONKSFIELD (350 SAND) 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 19 leases and 1,555 wells, and the rule below applies to all of them.

Discovered

1956-05-16

as the register files it

Field class

Oil

the register's own label

Between wells

100 ft

minimum

From a lease line

50 ft

minimum

A drilling unit in this field needs at least 0 acres. The field rule took effect on 1984-03-01.

The Commission's schedule remark for this field reads: “RULE 2 - 1/2 ACRE OIL PRORATION UNITS”

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	20,759 bbl	$436,893
Casinghead gas	Production	142 Mcf	$385
Total			$437,279

44 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 (108)

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 29.3056, -98.4643. A lease has no coordinate of its own — that point is the mean of its wells, and they span 1.1 miles.

29.30528, -98.46117 · 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%

108 of 108 wells

With a plug date

100.0%

108 of 108 wells

Median depth

460 ft

108 wells filed one

Completion to plug

20.4 years

median over 107 wells

What the state filed about each well

On the RRC proration schedule

108100.0%

A plug date is filed

108100.0%

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

108100.0%

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, 108 of 108 wells. Median 460 ft, with the middle half between 460 and 480 ft; the shallowest is 420 ft and the deepest 550 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, 107 of 108 wells, Jun 1956 – Jul 1985. 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 1956 – Jul 1985

107 of 108 wells; 1 filed none

Plug dates filed

Oct 2005 – Nov 2005

108 of 108 wells

Last completion to plug: a median of 20.4 years across the 107 wells that filed both dates, with the middle half between 20.3 years and 20.4 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

108 wells


42-02900453	2	480 ft	—	Nov 2005	Yes
42-02936586	C 22	460 ft	Jul 1985	Nov 2005	Yes
42-02936591	C 20	460 ft	Jul 1985	Nov 2005	Yes
42-02936585	J 3	480 ft	Jul 1985	Nov 2005	Yes
42-02936587	C 19	460 ft	Jul 1985	Nov 2005	Yes
42-02936588	C 18	460 ft	Jul 1985	Nov 2005	Yes
42-02936589	D 20	460 ft	Jul 1985	Nov 2005	Yes
42-02936590	M 6N	480 ft	Jul 1985	Nov 2005	Yes
42-02936529	M 3N	480 ft	Jul 1985	Oct 2005	Yes
42-02936531	C 7	440 ft	Jul 1985	Nov 2005	Yes
42-02936534	F 10	440 ft	Jul 1985	Nov 2005	Yes
42-02936542	M 4	480 ft	Jul 1985	Oct 2005	Yes
42-02936584	D 19	460 ft	Jul 1985	Nov 2005	Yes
42-02936526	L 4	500 ft	Jul 1985	Oct 2005	Yes
42-02936548	E 5	440 ft	Jul 1985	Nov 2005	Yes
42-02936559	J 7	480 ft	Jul 1985	Nov 2005	Yes
42-02936561	J 11	460 ft	Jul 1985	Nov 2005	Yes
42-02936567	H 11	440 ft	Jul 1985	Nov 2005	Yes
42-02936494	D 18	460 ft	Jul 1985	Nov 2005	Yes
42-02936495	D 17	460 ft	Jul 1985	Nov 2005	Yes
42-02936523	D 16	460 ft	Jul 1985	Nov 2005	Yes
42-02936540	D 21	460 ft	Jul 1985	Nov 2005	Yes
42-02936541	D 22	460 ft	Jul 1985	Nov 2005	Yes
42-02936508	D 11	460 ft	Jul 1985	Nov 2005	Yes
42-02936519	D 12	460 ft	Jul 1985	Nov 2005	Yes
42-02936520	D 13	480 ft	Jul 1985	Nov 2005	Yes
42-02936521	D 14	480 ft	Jul 1985	Nov 2005	Yes
42-02936522	D 15	480 ft	Jul 1985	Nov 2005	Yes
42-02936506	D 10	420 ft	Jul 1985	Nov 2005	Yes
42-02936516	D 9	420 ft	Jul 1985	Nov 2005	Yes
42-02936517	D 8	420 ft	Jul 1985	Nov 2005	Yes
42-02936518	D 7	440 ft	Jul 1985	Nov 2005	Yes
42-02936524	D 6	440 ft	Jul 1985	Nov 2005	Yes
42-02936501	E 11	460 ft	Jul 1985	Nov 2005	Yes
42-02936502	E 10	440 ft	Jul 1985	Nov 2005	Yes
42-02936533	E 8	440 ft	Jul 1985	Nov 2005	Yes
42-02936549	E 7	440 ft	Jul 1985	Nov 2005	Yes
42-02936550	E 9	440 ft	Jul 1985	Nov 2005	Yes
42-02936496	F 8	460 ft	Jul 1985	Nov 2005	Yes
42-02936497	F 9	460 ft	Jul 1985	Nov 2005	Yes
42-02936532	E 6	460 ft	Jul 1985	Nov 2005	Yes
42-02936551	F 11	420 ft	Jul 1985	Nov 2005	Yes
42-02936498	F 7	460 ft	Jun 1985	Nov 2005	Yes
42-02936499	F 6	460 ft	Jun 1985	Nov 2005	Yes
42-02936500	F 5	440 ft	Jun 1985	Nov 2005	Yes
42-02936543	M 5N	480 ft	Jun 1985	Nov 2005	Yes
42-02936525	M 4N	480 ft	Jun 1985	Nov 2005	Yes
42-02936527	M 3	480 ft	Jun 1985	Oct 2005	Yes
42-02936528	M 5	480 ft	Jun 1985	Oct 2005	Yes
42-02936556	K 8L	480 ft	Jun 1985	Nov 2005	Yes
42-02936503	H 10	460 ft	Jun 1985	Nov 2005	Yes
42-02936504	H 9	460 ft	Jun 1985	Nov 2005	Yes
42-02936505	H 8	460 ft	Jun 1985	Nov 2005	Yes
42-02936530	K 6L	480 ft	Jun 1985	Nov 2005	Yes
42-02936539	K 7L	480 ft	Jun 1985	Nov 2005	Yes
42-02936535	H 7	480 ft	Jun 1985	Nov 2005	Yes
42-02936538	J 13	480 ft	Jun 1985	Nov 2005	Yes
42-02936557	J 12	460 ft	Jun 1985	Nov 2005	Yes
42-02936568	J 10	480 ft	Jun 1985	Nov 2005	Yes
42-02936560	J 5	480 ft	Jun 1985	Nov 2005	Yes
42-02936562	J 9	500 ft	Jun 1985	Nov 2005	Yes
42-02936564	J 8	480 ft	Jun 1985	Nov 2005	Yes
42-02936565	J 6	480 ft	Jun 1985	Nov 2005	Yes
42-02936545	K 9	460 ft	Jun 1985	Nov 2005	Yes
42-02936546	K 10	460 ft	Jun 1985	Oct 2005	Yes
42-02936558	K 11	460 ft	Jun 1985	Oct 2005	Yes
42-02936566	J 4	480 ft	Jun 1985	Nov 2005	Yes
42-02936569	K 8	480 ft	Jun 1985	Nov 2005	Yes
42-02936544	L 5	500 ft	Jun 1985	Oct 2005	Yes
42-02936552	K 7	480 ft	Jun 1985	Nov 2005	Yes
42-02936553	K 6	480 ft	Jun 1985	Oct 2005	Yes
42-02936563	L 3	500 ft	Jun 1985	Oct 2005	Yes
42-02936507	C 17	460 ft	Jun 1985	Nov 2005	Yes
42-02936536	K 5	480 ft	Jun 1985	Oct 2005	Yes
42-02936537	K 3	500 ft	Jun 1985	Oct 2005	Yes
42-02936554	K 4	500 ft	Jun 1985	Oct 2005	Yes
42-02936555	K 2	520 ft	Jun 1985	Oct 2005	Yes
42-02936509	C 16	460 ft	Jun 1985	Nov 2005	Yes
42-02936510	C 15	460 ft	Jun 1985	Nov 2005	Yes
42-02936511	C 14	460 ft	Jun 1985	Nov 2005	Yes
42-02936512	C 13	460 ft	Jun 1985	Nov 2005	Yes
42-02936513	C 12	460 ft	Jun 1985	Nov 2005	Yes
42-02936514	C 11	460 ft	Jun 1985	Nov 2005	Yes
42-02936515	C 10	440 ft	Jun 1985	Nov 2005	Yes
42-02936547	C 8	440 ft	Jun 1985	Nov 2005	Yes
42-02936483	B 10	460 ft	Jun 1985	Nov 2005	Yes
42-02936484	B 9	460 ft	Jun 1985	Nov 2005	Yes
42-02936490	B 13	460 ft	Jun 1985	Nov 2005	Yes
42-02936491	B 11	440 ft	Jun 1985	Nov 2005	Yes
42-02936492	B 12	460 ft	Jun 1985	Nov 2005	Yes
42-02936485	C 9	420 ft	Jun 1985	Nov 2005	Yes
42-02936486	A 13	460 ft	Jun 1985	Nov 2005	Yes
42-02936487	A 12	440 ft	Jun 1985	Nov 2005	Yes
42-02936488	A 11	460 ft	Jun 1985	Nov 2005	Yes
42-02936489	A 10	460 ft	Jun 1985	Nov 2005	Yes
42-02936323	4A	550 ft	May 1985	Oct 2005	Yes
42-02936324	1A	550 ft	May 1985	Oct 2005	Yes
42-02936325	2A	550 ft	May 1985	Oct 2005	Yes
42-02936326	3A	550 ft	May 1985	Oct 2005	Yes
42-02936327	5A	550 ft	May 1985	Nov 2005	Yes
42-02936328	6A	550 ft	May 1985	Nov 2005	Yes
42-02936329	7A	550 ft	May 1985	Nov 2005	Yes
42-02931986	7	480 ft	Jun 1982	Oct 2005	Yes
42-02931918	6	470 ft	May 1982	Oct 2005	Yes
42-02931916	5	470 ft	May 1982	Nov 2005	Yes
42-02931917	4	500 ft	Apr 1982	Nov 2005	Yes
42-02900452	1	500 ft	Mar 1964	Nov 2005	Yes
42-02980676	1B	480 ft	Jun 1956	Nov 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 (165)

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

165 months


Sep 2006	0	0	60.08	5.04	$0
Aug 2006	0	0	68.71	7.34	$0
Jul 2006	0	0	69.37	6.34	$0
Jun 2006	0	0	66.28	6.38	$0
May 2006	0	0	66.01	6.42	$0
Apr 2006	0	0	64.39	7.36	$0
Mar 2006	0	0	56.70	7.08	$0
Feb 2006	0	0	57.59	7.75	$0
Jan 2006	0	0	60.59	8.93	$0
Dec 2005	0	0	54.94	13.42	$0
Nov 2005	391	0	54.69	10.59	$21,384
Oct 2005	0	0	58.34	13.80	$0
Sep 2005	0	0	61.45	12.08	$0
Aug 2005	140	0	61.51	9.80	$8,611
Jul 2005	0	0	55.69	7.84	$0
Jun 2005	112	0	52.33	7.38	$5,861
May 2005	0	0	45.22	6.65	$0
Apr 2005	140	0	49.20	7.36	$6,888
Mar 2005	0	1	50.37	7.15	$7
Feb 2005	124	1	45.22	6.31	$5,614
Jan 2005	0	1	43.16	6.32	$6
Dec 2004	128	1	39.86	6.75	$5,109
Nov 2004	0	1	45.28	6.33	$6
Oct 2004	0	1	49.70	6.52	$7
Sep 2004	158	1	43.24	5.28	$6,837
Aug 2004	124	1	42.37	5.55	$5,259
Jul 2004	0	1	38.28	6.08	$6
Jun 2004	0	1	36.10	6.43	$6
May 2004	131	1	37.48	6.49	$4,916
Apr 2004	0	1	34.47	5.86	$6
Mar 2004	131	1	34.36	5.53	$4,507
Feb 2004	0	1	32.45	5.51	$6
Jan 2004	126	1	32.03	6.30	$4,042
Dec 2003	0	1	30.26	6.30	$6
Nov 2003	0	1	28.80	4.60	$5
Oct 2003	115	1	28.17	4.76	$3,244
Sep 2003	0	1	26.31	4.75	$5
Aug 2003	113	1	29.76	5.13	$3,368
Jul 2003	128	1	29.41	5.17	$3,770
Jun 2003	0	1	28.56	5.98	$6
May 2003	0	1	26.59	5.97	$6
Apr 2003	133	1	26.67	5.41	$3,553
Mar 2003	118	1	31.14	6.10	$3,681
Feb 2003	0	1	33.48	7.93	$8
Jan 2003	145	1	30.31	5.58	$4,401
Dec 2002	0	1	26.91	4.85	$5
Nov 2002	0	1	24.66	4.14	$4
Oct 2002	120	1	26.46	4.23	$3,179
Sep 2002	33	1	27.44	3.64	$909
Aug 2002	47	1	25.96	3.16	$1,223
Jul 2002	0	1	24.58	3.06	$3
Jun 2002	111	1	23.73	3.34	$2,637
May 2002	120	1	24.66	3.58	$2,963
Apr 2002	119	1	23.65	3.51	$2,818
Mar 2002	0	1	22.00	3.10	$3
Feb 2002	171	1	18.22	2.38	$3,118
Jan 2002	143	1	17.17	2.38	$2,458
Dec 2001	0	1	16.93	2.36	$2
Nov 2001	123	1	18.07	2.41	$2,225
Oct 2001	130	0	19.78	2.53	$2,571
Sep 2001	127	1	24.26	2.25	$3,083
Aug 2001	0	1	24.87	3.05	$3
Jul 2001	120	1	23.93	3.20	$2,875
Jun 2001	123	1	24.56	3.82	$3,025
May 2001	120	1	25.52	4.31	$3,067
Apr 2001	226	1	24.68	5.34	$5,583
Mar 2001	0	1	24.54	5.38	$5
Feb 2001	224	1	27.75	5.77	$6,222
Jan 2001	117	1	27.47	8.40	$3,222
Dec 2000	111	1	26.88	9.12	$2,993
Nov 2000	0	1	32.21	5.66	$6
Oct 2000	116	1	31.23	5.15	$3,628
Sep 2000	117	1	31.87	5.19	$3,734
Aug 2000	239	1	29.64	4.54	$7,089
Jul 2000	116	1	28.53	4.09	$3,314
Jun 2000	104	1	29.30	4.40	$3,052
May 2000	115	1	27.26	3.68	$3,139
Apr 2000	248	1	24.51	3.12	$6,082
Mar 2000	121	1	28.42	2.86	$3,442
Feb 2000	126	1	27.62	2.73	$3,483
Jan 2000	239	1	25.27	2.48	$6,042
Dec 1999	121	1	24.28	2.42	$2,940
Nov 1999	120	1	23.19	2.43	$2,785
Oct 1999	123	1	20.98	2.80	$2,583
Sep 1999	135	1	21.75	2.62	$2,939
Aug 1999	112	1	19.26	2.88	$2,160
Jul 1999	221	1	17.89	2.37	$3,956
Jun 1999	119	1	15.94	2.36	$1,899
May 1999	112	1	15.79	2.32	$1,771
Apr 1999	240	1	15.10	2.21	$3,626
Mar 1999	123	1	12.47	1.84	$1,536
Feb 1999	129	1	9.98	1.82	$1,289
Jan 1999	119	1	10.38	1.90	$1,237
Dec 1998	252	1	9.20	1.77	$2,320
Nov 1998	127	1	10.89	2.19	$1,385
Oct 1998	122	1	12.42	1.97	$1,517
Sep 1998	133	1	12.59	2.08	$1,677
Aug 1998	241	1	11.30	1.91	$2,725
Jul 1998	130	1	11.74	2.24	$1,528
Jun 1998	156	1	11.24	2.24	$1,756
May 1998	249	1	12.62	2.21	$3,145
Apr 1998	119	1	13.04	2.51	$1,554
Mar 1998	242	1	12.80	2.31	$3,100
Feb 1998	113	1	13.95	2.30	$1,579
Jan 1998	118	1	14.70	2.15	$1,737
Dec 1997	229	1	16.32	2.41	$3,740
Nov 1997	118	1	18.19	3.09	$2,150
Oct 1997	246	1	19.25	3.15	$4,739
Sep 1997	116	1	17.74	2.95	$2,061
Aug 1997	251	1	17.86	2.55	$4,485
Jul 1997	119	1	17.58	2.25	$2,094
Jun 1997	122	1	17.24	2.26	$2,106
May 1997	125	1	18.97	2.31	$2,374
Apr 1997	248	1	17.88	2.08	$4,436
Mar 1997	252	1	18.95	1.94	$4,777
Feb 1997	120	1	20.49	2.21	$2,461
Jan 1997	239	1	23.48	3.54	$5,615
Dec 1996	124	1	23.32	—	$2,892
Nov 1996	239	1	21.97	—	$5,251
Oct 1996	237	1	23.31	—	$5,524
Sep 1996	123	1	22.22	—	$2,733
Aug 1996	235	1	20.26	—	$4,761
Jul 1996	243	1	19.55	—	$4,751
Jun 1996	242	1	18.73	—	$4,533
May 1996	128	1	19.43	—	$2,487
Apr 1996	132	1	21.51	—	$2,839
Mar 1996	257	1	19.38	—	$4,981
Feb 1996	137	1	16.98	—	$2,326
Jan 1996	240	1	17.07	—	$4,097
Dec 1995	129	1	17.19	—	$2,218
Nov 1995	246	1	16.00	—	$3,936
Oct 1995	132	1	15.43	—	$2,037
Sep 1995	122	1	16.18	—	$1,974
Aug 1995	129	1	15.92	—	$2,054
Jul 1995	131	1	15.24	—	$1,996
Jun 1995	287	1	16.41	—	$4,710
May 1995	133	1	17.56	—	$2,335
Apr 1995	131	1	17.73	—	$2,323
Mar 1995	262	1	16.44	—	$4,307
Feb 1995	139	1	16.58	—	$2,305
Jan 1995	279	1	15.92	—	$4,442
Dec 1994	181	1	15.03	—	$2,720
Nov 1994	116	1	15.90	—	$1,844
Oct 1994	136	1	15.58	—	$2,119
Sep 1994	254	1	15.29	—	$3,884
Aug 1994	122	1	16.13	—	$1,968
Jul 1994	207	1	17.56	—	$3,635
Jun 1994	252	1	17.09	—	$4,307
May 1994	259	1	15.88	—	$4,113
Apr 1994	136	1	14.14	—	$1,923
Mar 1994	262	1	12.46	—	$3,265
Feb 1994	129	1	12.50	—	$1,613
Jan 1994	250	1	12.66	—	$3,165
Dec 1993	131	1	12.33	—	$1,615
Nov 1993	282	1	14.49	—	$4,086
Oct 1993	282	1	15.85	—	$4,470
Sep 1993	140	1	15.03	—	$2,104
Aug 1993	286	1	15.66	—	$4,479
Jul 1993	294	1	15.46	—	$4,545
Jun 1993	297	1	16.79	—	$4,987
May 1993	142	1	17.68	—	$2,511
Apr 1993	0	0	18.05	—	$0
Mar 1993	0	0	18.14	—	$0
Feb 1993	0	0	17.90	—	$0
Jan 1993	0	0	16.93	—	$0

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 2005 — as filed, then multipliedworked

Oil                  391 bbl  × $ 54.69 =    $21,384
Casinghead gas         0 Mcf  × $ 10.59 =         $0

────────────────────────────────────────────────────
Month total                                  $21,384

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. 01/O/10570 is the state's own key, not one this site invented.