HALFF ESTATE

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

Operated by SLEDGE, H. G., INC. (P-5 787403) in the AMACKER-TIPPETT (DEVONIAN) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 8899District 7CField 02207304Hydrogen sulphide fieldNGPA filingOilCasinghead gasSave Export

Value, all time

$1.6 M

Jan 1993 – Nov 2016

Value, last 12 filed months

at the published price for each month

Months reported

287

no gaps in the span

Streams

oil, casinghead gas

The AMACKER-TIPPETT (DEVONIAN) 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 165 leases and 173 wells, and the rule below applies to all of them.

Discovered

1955-09-10

as the register files it

Field class

Oil and gas

the register's own label

Between wells

933 ft

minimum

From a lease line

467 ft

minimum

A drilling unit in this field needs at least 40 acres. The field rule took effect on 2008-02-12.

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: “PSUEDO RULES FOR HORIZONTALS”

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	3	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	32,041 bbl	$843,151
Casinghead gas	Production	219,565 Mcf	$751,887
Total			$1,595,038

68,726 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 31.3410, -102.0741. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.5 miles.

31.34079, -102.07400 · 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

11,630 ft

3 wells filed one

Completion to plug

26.3 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 11,610 and 11,771 ft, median 11,630 ft, over the 3 wells that filed a depth.

Completions filed

Jun 1983 – Aug 2008

3 of 3 wells

Plug dates filed

Feb 2010 – Oct 2016

3 of 3 wells

Last completion to plug: a median of 26.3 years across the 3 wells that filed both dates, with the middle half between 17.3 years and 28.1 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

3 wells


42-46132140	3	11,630 ft	Aug 2008	Oct 2016	Yes
42-46132065	2	11,610 ft	Nov 1983	Feb 2010	Yes
42-46131673	1	11,771 ft	Jun 1983	Apr 2013	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 (287)

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

287 months


Nov 2016	0	0	42.49	2.64	$0
Oct 2016	0	0	46.19	3.09	$0
Sep 2016	0	0	41.55	3.10	$0
Aug 2016	0	0	41.44	2.92	$0
Jul 2016	0	0	41.62	2.92	$0
Jun 2016	0	0	45.35	2.69	$0
May 2016	0	0	42.52	1.99	$0
Apr 2016	0	0	36.56	1.99	$0
Mar 2016	0	0	33.01	1.79	$0
Feb 2016	0	0	26.47	2.06	$0
Jan 2016	0	0	27.35	2.36	$0
Dec 2015	0	0	32.36	2.00	$0
Nov 2015	0	0	38.79	2.17	$0
Oct 2015	0	0	43.55	2.43	$0
Sep 2015	0	0	42.99	2.76	$0
Aug 2015	0	0	40.16	2.87	$0
Jul 2015	0	0	48.15	2.95	$0
Jun 2015	0	0	56.15	2.88	$0
May 2015	0	0	55.21	2.96	$0
Apr 2015	0	0	49.82	2.71	$0
Mar 2015	0	0	42.89	2.93	$0
Feb 2015	0	0	44.66	2.98	$0
Jan 2015	0	0	43.43	3.10	$0
Dec 2014	0	0	54.69	3.59	$0
Nov 2014	0	0	70.46	4.25	$0
Oct 2014	0	0	78.30	3.90	$0
Sep 2014	0	0	86.16	4.05	$0
Aug 2014	0	0	89.39	4.04	$0
Jul 2014	0	0	96.56	4.18	$0
Jun 2014	0	0	98.16	4.74	$0
May 2014	0	0	94.73	4.73	$0
Apr 2014	0	0	95.94	4.81	$0
Mar 2014	0	0	95.89	5.06	$0
Feb 2014	0	0	97.40	6.19	$0
Jan 2014	0	0	90.40	4.86	$0
Dec 2013	0	0	91.82	4.35	$0
Nov 2013	0	0	88.85	3.74	$0
Oct 2013	0	0	97.42	3.78	$0
Sep 2013	0	0	104.11	3.72	$0
Aug 2013	0	0	104.25	3.52	$0
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	0	0	95.72	3.31	$0
Oct 2011	0	0	84.98	3.65	$0
Sep 2011	0	0	83.62	3.99	$0
Aug 2011	0	0	83.40	4.15	$0
Jul 2011	0	0	94.14	4.52	$0
Jun 2011	0	0	92.90	4.64	$0
May 2011	0	0	98.13	4.40	$0
Apr 2011	0	0	105.96	4.33	$0
Mar 2011	0	0	96.36	4.06	$0
Feb 2011	0	0	85.64	4.18	$0
Jan 2011	0	0	86.50	4.59	$0
Dec 2010	0	0	85.73	4.35	$0
Nov 2010	0	0	80.84	3.80	$0
Oct 2010	0	0	78.10	3.51	$0
Sep 2010	0	0	72.63	3.98	$0
Aug 2010	0	0	73.68	4.42	$0
Jul 2010	0	0	72.55	4.74	$0
Jun 2010	0	0	70.36	4.91	$0
May 2010	0	0	71.12	4.24	$0
Apr 2010	0	0	81.69	4.12	$0
Mar 2010	0	0	78.39	4.39	$0
Feb 2010	0	0	73.58	5.44	$0
Jan 2010	0	0	74.36	5.96	$0
Dec 2009	0	0	71.44	5.48	$0
Nov 2009	0	0	74.59	3.75	$0
Oct 2009	0	0	72.54	4.11	$0
Sep 2009	0	0	65.54	3.06	$0
Aug 2009	0	0	67.42	3.22	$0
Jul 2009	0	0	61.13	3.46	$0
Jun 2009	0	0	66.16	3.90	$0
May 2009	0	0	54.74	3.93	$0
Apr 2009	0	0	46.77	3.59	$0
Mar 2009	0	0	42.14	4.06	$0
Feb 2009	0	0	32.81	4.63	$0
Jan 2009	0	0	35.86	5.37	$0
Dec 2008	0	0	37.10	5.98	$0
Nov 2008	0	0	55.49	6.86	$0
Oct 2008	0	0	75.24	6.92	$0
Sep 2008	0	0	101.76	7.88	$0
Aug 2008	192	0	114.22	8.48	$21,930
Jul 2008	3	831	131.08	11.39	$9,858
Jun 2008	0	948	131.33	13.03	$12,355
May 2008	165	983	123.17	11.57	$31,701
Apr 2008	0	956	110.31	10.45	$9,995
Mar 2008	0	981	101.90	9.66	$9,480
Feb 2008	179	918	92.53	8.77	$24,614
Jan 2008	0	976	90.38	8.21	$8,009
Dec 2007	179	970	88.33	7.30	$22,894
Nov 2007	0	990	91.67	7.29	$7,219
Oct 2007	0	996	82.85	6.92	$6,894
Sep 2007	178	940	75.84	6.24	$19,369
Aug 2007	0	982	69.06	6.39	$6,273
Jul 2007	0	969	70.90	6.39	$6,190
Jun 2007	172	866	62.00	7.55	$17,201
May 2007	0	902	58.74	7.85	$7,077
Apr 2007	0	833	59.61	7.81	$6,502
Mar 2007	167	881	56.92	7.30	$15,939
Feb 2007	0	809	55.10	8.22	$6,647
Jan 2007	181	1,009	50.30	6.73	$15,892
Dec 2006	1	923	56.65	6.92	$6,442
Nov 2006	173	941	54.20	7.62	$16,545
Oct 2006	179	980	54.90	6.01	$15,721
Sep 2006	0	961	60.08	5.04	$4,841
Aug 2006	0	978	68.71	7.34	$7,178
Jul 2006	220	1,013	69.37	6.34	$21,687
Jun 2006	179	1,007	66.28	6.38	$18,293
May 2006	0	1,017	66.01	6.42	$6,534
Apr 2006	0	1,181	64.39	7.36	$8,693
Mar 2006	161	1,191	56.70	7.08	$17,564
Feb 2006	153	1,045	57.59	7.75	$16,911
Jan 2006	0	1,148	60.59	8.93	$10,255
Dec 2005	180	1,184	54.94	13.42	$25,773
Nov 2005	180	1,128	54.69	10.59	$21,788
Oct 2005	123	1,049	58.34	13.80	$21,648
Sep 2005	0	897	61.45	12.08	$10,835
Aug 2005	181	934	61.51	9.80	$20,284
Jul 2005	133	1,370	55.69	7.84	$18,153
Jun 2005	0	969	52.33	7.38	$7,152
May 2005	172	1,005	45.22	6.65	$14,462
Apr 2005	182	978	49.20	7.36	$16,153
Mar 2005	151	940	50.37	7.15	$14,331
Feb 2005	0	873	45.22	6.31	$5,510
Jan 2005	148	995	43.16	6.32	$12,678
Dec 2004	152	822	39.86	6.75	$11,608
Nov 2004	146	883	45.28	6.33	$12,201
Oct 2004	151	934	49.70	6.52	$13,590
Sep 2004	155	968	43.24	5.28	$11,817
Aug 2004	149	1,068	42.37	5.55	$12,241
Jul 2004	0	973	38.28	6.08	$5,920
Jun 2004	142	1,034	36.10	6.43	$11,778
May 2004	150	1,038	37.48	6.49	$12,363
Apr 2004	136	1,006	34.47	5.86	$10,582
Mar 2004	136	1,001	34.36	5.53	$10,209
Feb 2004	136	958	32.45	5.51	$9,691
Jan 2004	136	998	32.03	6.30	$10,643
Dec 2003	133	1,023	30.26	6.30	$10,471
Nov 2003	132	976	28.80	4.60	$8,286
Oct 2003	135	1,198	28.17	4.76	$9,505
Sep 2003	139	1,175	26.31	4.75	$9,238
Aug 2003	135	971	29.76	5.13	$8,999
Jul 2003	135	864	29.41	5.17	$8,438
Jun 2003	127	921	28.56	5.98	$9,137
May 2003	261	1,033	26.59	5.97	$13,110
Apr 2003	121	1,046	26.67	5.41	$8,883
Mar 2003	126	1,067	31.14	6.10	$10,428
Feb 2003	127	890	33.48	7.93	$11,306
Jan 2003	129	1,232	30.31	5.58	$10,787
Dec 2002	257	1,220	26.91	4.85	$12,837
Nov 2002	127	1,191	24.66	4.14	$8,059
Oct 2002	127	1,023	26.46	4.23	$7,687
Sep 2002	129	1,010	27.44	3.64	$7,211
Aug 2002	127	1,008	25.96	3.16	$6,486
Jul 2002	253	1,086	24.58	3.06	$9,544
Jun 2002	126	1,034	23.73	3.34	$6,442
May 2002	246	1,114	24.66	3.58	$10,059
Apr 2002	0	1,038	23.65	3.51	$3,646
Mar 2002	256	1,225	22.00	3.10	$9,433
Feb 2002	127	1,155	18.22	2.38	$5,058
Jan 2002	129	1,262	17.17	2.38	$5,213
Dec 2001	252	1,309	16.93	2.36	$7,361
Nov 2001	127	1,174	18.07	2.41	$5,119
Oct 2001	125	1,464	19.78	2.53	$6,175
Sep 2001	126	1,291	24.26	2.25	$5,963
Aug 2001	125	1,254	24.87	3.05	$6,937
Jul 2001	126	1,351	23.93	3.20	$7,334
Jun 2001	252	1,265	24.56	3.82	$11,027
May 2001	118	1,342	25.52	4.31	$8,792
Apr 2001	126	1,266	24.68	5.34	$9,864
Mar 2001	257	1,202	24.54	5.38	$12,769
Feb 2001	153	1,189	27.75	5.77	$11,103
Jan 2001	148	1,530	27.47	8.40	$16,916
Dec 2000	154	596	26.88	9.12	$9,577
Nov 2000	141	993	32.21	5.66	$10,160
Oct 2000	268	917	31.23	5.15	$13,088
Sep 2000	137	1,189	31.87	5.19	$10,533
Aug 2000	276	1,321	29.64	4.54	$14,179
Jul 2000	132	850	28.53	4.09	$7,242
Jun 2000	702	1,444	29.30	4.40	$26,918
May 2000	141	1,067	27.26	3.68	$7,770
Apr 2000	142	1,091	24.51	3.12	$6,880
Mar 2000	278	1,105	28.42	2.86	$11,061
Feb 2000	278	957	27.62	2.73	$10,288
Jan 2000	146	1,070	25.27	2.48	$6,344
Dec 1999	282	1,035	24.28	2.42	$9,356
Nov 1999	142	853	23.19	2.43	$5,369
Oct 1999	141	1,077	20.98	2.80	$5,978
Sep 1999	146	1,105	21.75	2.62	$6,069
Aug 1999	283	1,143	19.26	2.88	$8,737
Jul 1999	148	1,137	17.89	2.37	$5,345
Jun 1999	284	1,088	15.94	2.36	$7,097
May 1999	141	1,119	15.79	2.32	$4,824
Apr 1999	147	1,105	15.10	2.21	$4,660
Mar 1999	282	1,136	12.47	1.84	$5,605
Feb 1999	149	1,030	9.98	1.82	$3,359
Jan 1999	146	1,153	10.38	1.90	$3,706
Dec 1998	291	1,183	9.20	1.77	$4,775
Nov 1998	136	1,164	10.89	2.19	$4,025
Oct 1998	280	1,126	12.42	1.97	$5,695
Sep 1998	284	1,139	12.59	2.08	$5,948
Aug 1998	155	1,251	11.30	1.91	$4,138
Jul 1998	137	1,079	11.74	2.24	$4,022
Jun 1998	144	1,096	11.24	2.24	$4,071
May 1998	297	1,083	12.62	2.21	$6,138
Apr 1998	148	1,110	13.04	2.51	$4,711
Mar 1998	155	1,191	12.80	2.31	$4,735
Feb 1998	156	1,044	13.95	2.30	$4,576
Jan 1998	299	1,160	14.70	2.15	$6,895
Dec 1997	150	1,150	16.32	2.41	$5,221
Nov 1997	154	1,187	18.19	3.09	$6,467
Oct 1997	310	1,278	19.25	3.15	$9,993
Sep 1997	162	1,235	17.74	2.95	$6,523
Aug 1997	321	1,280	17.86	2.55	$9,003
Jul 1997	163	1,278	17.58	2.25	$5,737
Jun 1997	323	1,010	17.24	2.26	$7,848
May 1997	162	1,283	18.97	2.31	$6,035
Apr 1997	157	1,330	17.88	2.08	$5,577
Mar 1997	309	1,716	18.95	1.94	$9,183
Feb 1997	314	1,530	20.49	2.21	$9,809
Jan 1997	152	1,826	23.48	3.54	$10,032
Dec 1996	462	1,595	23.32	—	$10,774
Nov 1996	0	1,076	21.97	—	$0
Oct 1996	303	1,306	23.31	—	$7,063
Sep 1996	142	1,204	22.22	—	$3,155
Aug 1996	155	1,121	20.26	—	$3,140
Jul 1996	149	1,122	19.55	—	$2,913
Jun 1996	300	1,172	18.73	—	$5,619
May 1996	147	1,382	19.43	—	$2,856
Apr 1996	146	1,351	21.51	—	$3,140
Mar 1996	314	1,224	19.38	—	$6,085
Feb 1996	150	1,045	16.98	—	$2,547
Jan 1996	159	1,231	17.07	—	$2,714
Dec 1995	314	1,258	17.19	—	$5,398
Nov 1995	154	1,081	16.00	—	$2,464
Oct 1995	156	1,189	15.43	—	$2,407
Sep 1995	309	1,167	16.18	—	$5,000
Aug 1995	154	1,130	15.92	—	$2,452
Jul 1995	156	1,360	15.24	—	$2,377
Jun 1995	155	1,442	16.41	—	$2,544
May 1995	151	1,401	17.56	—	$2,652
Apr 1995	306	1,226	17.73	—	$5,425
Mar 1995	158	1,555	16.44	—	$2,598
Feb 1995	144	1,283	16.58	—	$2,388
Jan 1995	291	1,166	15.92	—	$4,633
Dec 1994	291	1,422	15.03	—	$4,374
Nov 1994	142	1,348	15.90	—	$2,258
Oct 1994	152	1,638	15.58	—	$2,368
Sep 1994	145	1,534	15.29	—	$2,217
Aug 1994	422	1,714	16.13	—	$6,807
Jul 1994	0	1,762	17.56	—	$0
Jun 1994	285	1,634	17.09	—	$4,871
May 1994	139	1,435	15.88	—	$2,207
Apr 1994	282	1,619	14.14	—	$3,987
Mar 1994	274	1,653	12.46	—	$3,414
Feb 1994	142	1,509	12.50	—	$1,775
Jan 1994	282	1,617	12.66	—	$3,570
Dec 1993	274	1,270	12.33	—	$3,378
Nov 1993	262	660	14.49	—	$3,796
Oct 1993	139	1,407	15.85	—	$2,203
Sep 1993	278	1,827	15.03	—	$4,178
Aug 1993	278	1,869	15.66	—	$4,353
Jul 1993	278	1,869	15.46	—	$4,298
Jun 1993	284	2,234	16.79	—	$4,768
May 1993	554	2,563	17.68	—	$9,795
Apr 1993	149	1,078	18.05	—	$2,689
Mar 1993	143	1,759	18.14	—	$2,594
Feb 1993	496	1,468	17.90	—	$8,878
Jan 1993	170	1,750	16.93	—	$2,878

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.

Aug 2008 — as filed, then multipliedworked

Oil                  192 bbl  × $114.22 =    $21,930
Casinghead gas         0 Mcf  × $  8.48 =         $0

────────────────────────────────────────────────────
Month total                                  $21,930

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/8899 is the state's own key, not one this site invented.