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, SW (WOLFCAMP) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 10226District 7CField 02220700OilCasinghead gasSave Export

Value, all time

$378 k

Jan 1993 – May 2006

Value, last 12 filed months

$31 k

at the published price for each month

Months reported

161

no gaps in the span

Streams

oil, casinghead gas

The AMACKER-TIPPETT, SW (WOLFCAMP) 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 94 leases and 140 wells, and the rule below applies to all of them.

Discovered

1977-05-29

as the register files it

Field class

Oil and gas

the register's own label

Between wells

1,320 ft

minimum

From a lease line

660 ft

minimum

A drilling unit in this field needs at least 80 acres. The field rule took effect on 1996-05-01.

The Commission's schedule remark for this field reads: “AOF-1 AND AOF-2 EFFECTIVE 05/01/2002.”

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	7,947 bbl	$171,535
Casinghead gas	Production	67,225 Mcf	$206,594
Total			$378,129

17,183 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 (2)

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 31.3428, -102.0740. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.3 miles.

31.34278, -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%

2 of 2 wells

With a plug date

100.0%

2 of 2 wells

Median depth

11,701 ft

2 wells filed one

Completion to plug

19.0 years

median over 2 wells

What the state filed about each well

On the RRC proration schedule

2100.0%

A plug date is filed

2100.0%

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

2100.0%

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 11,630 and 11,771 ft, median 11,701 ft, over the 2 wells that filed a depth.

Completions filed

Jun 1983 – Aug 2008

2 of 2 wells

Plug dates filed

Apr 2013 – Oct 2016

2 of 2 wells

Last completion to plug: a median of 19.0 years across the 2 wells that filed both dates, with the middle half between 13.6 years and 24.4 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

2 wells


42-46132140	3	11,630 ft	Aug 2008	Oct 2016	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 (161)

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

161 months


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	26	0	57.59	7.75	$1,497
Jan 2006	0	235	60.59	8.93	$2,099
Dec 2005	0	242	54.94	13.42	$3,247
Nov 2005	0	231	54.69	10.59	$2,446
Oct 2005	2	429	58.34	13.80	$6,035
Sep 2005	1	367	61.45	12.08	$4,494
Aug 2005	0	381	61.51	9.80	$3,733
Jul 2005	1	560	55.69	7.84	$4,448
Jun 2005	0	396	52.33	7.38	$2,923
May 2005	0	411	45.22	6.65	$2,734
Apr 2005	0	399	49.20	7.36	$2,937
Mar 2005	33	384	50.37	7.15	$4,410
Feb 2005	0	357	45.22	6.31	$2,253
Jan 2005	30	406	43.16	6.32	$3,862
Dec 2004	35	335	39.86	6.75	$3,657
Nov 2004	30	361	45.28	6.33	$3,644
Oct 2004	31	381	49.70	6.52	$4,023
Sep 2004	33	395	43.24	5.28	$3,514
Aug 2004	30	436	42.37	5.55	$3,691
Jul 2004	0	398	38.28	6.08	$2,422
Jun 2004	29	422	36.10	6.43	$3,762
May 2004	31	424	37.48	6.49	$3,916
Apr 2004	46	431	34.47	5.86	$4,111
Mar 2004	45	429	34.36	5.53	$3,919
Feb 2004	46	410	32.45	5.51	$3,752
Jan 2004	45	428	32.03	6.30	$4,138
Dec 2003	45	439	30.26	6.30	$4,128
Nov 2003	44	418	28.80	4.60	$3,188
Oct 2003	46	513	28.17	4.76	$3,738
Sep 2003	46	504	26.31	4.75	$3,604
Aug 2003	46	416	29.76	5.13	$3,503
Jul 2003	45	370	29.41	5.17	$3,237
Jun 2003	43	395	28.56	5.98	$3,591
May 2003	87	443	26.59	5.97	$4,959
Apr 2003	53	449	26.67	5.41	$3,841
Mar 2003	55	458	31.14	6.10	$4,505
Feb 2003	55	381	33.48	7.93	$4,861
Jan 2003	57	528	30.31	5.58	$4,675
Dec 2002	111	523	26.91	4.85	$5,526
Nov 2002	55	510	24.66	4.14	$3,466
Oct 2002	54	438	26.46	4.23	$3,281
Sep 2002	56	433	27.44	3.64	$3,111
Aug 2002	55	432	25.96	3.16	$2,795
Jul 2002	110	465	24.58	3.06	$4,128
Jun 2002	55	444	23.73	3.34	$2,787
May 2002	106	478	24.66	3.58	$4,327
Apr 2002	0	445	23.65	3.51	$1,563
Mar 2002	112	526	22.00	3.10	$4,096
Feb 2002	55	495	18.22	2.38	$2,178
Jan 2002	56	542	17.17	2.38	$2,249
Dec 2001	109	560	16.93	2.36	$3,169
Nov 2001	56	412	18.07	2.41	$2,003
Oct 2001	53	515	19.78	2.53	$2,351
Sep 2001	55	454	24.26	2.25	$2,356
Aug 2001	55	440	24.87	3.05	$2,711
Jul 2001	54	476	23.93	3.20	$2,814
Jun 2001	109	445	24.56	3.82	$4,379
May 2001	52	424	25.52	4.31	$3,153
Apr 2001	54	401	24.68	5.34	$3,472
Mar 2001	112	379	24.54	5.38	$4,786
Feb 2001	31	261	27.75	5.77	$2,365
Jan 2001	33	337	27.47	8.40	$3,737
Dec 2000	35	131	26.88	9.12	$2,136
Nov 2000	36	248	32.21	5.66	$2,563
Oct 2000	81	274	31.23	5.15	$3,940
Sep 2000	41	355	31.87	5.19	$3,148
Aug 2000	82	394	29.64	4.54	$4,220
Jul 2000	43	850	28.53	4.09	$4,703
Jun 2000	174	680	29.30	4.40	$8,088
May 2000	37	502	27.26	3.68	$2,856
Apr 2000	36	514	24.51	3.12	$2,484
Mar 2000	69	520	28.42	2.86	$3,448
Feb 2000	69	451	27.62	2.73	$3,135
Jan 2000	37	504	25.27	2.48	$2,185
Dec 1999	71	487	24.28	2.42	$2,904
Nov 1999	38	402	23.19	2.43	$1,860
Oct 1999	36	507	20.98	2.80	$2,177
Sep 1999	36	521	21.75	2.62	$2,147
Aug 1999	73	539	19.26	2.88	$2,956
Jul 1999	37	535	17.89	2.37	$1,931
Jun 1999	71	513	15.94	2.36	$2,344
May 1999	35	527	15.79	2.32	$1,776
Apr 1999	37	520	15.10	2.21	$1,707
Mar 1999	71	535	12.47	1.84	$1,869
Feb 1999	37	485	9.98	1.82	$1,251
Jan 1999	36	543	10.38	1.90	$1,405
Dec 1998	73	557	9.20	1.77	$1,659
Nov 1998	35	548	10.89	2.19	$1,579
Oct 1998	71	531	12.42	1.97	$1,927
Sep 1998	71	536	12.59	2.08	$2,010
Aug 1998	40	590	11.30	1.91	$1,577
Jul 1998	35	509	11.74	2.24	$1,550
Jun 1998	37	517	11.24	2.24	$1,573
May 1998	77	510	12.62	2.21	$2,097
Apr 1998	36	522	13.04	2.51	$1,777
Mar 1998	38	560	12.80	2.31	$1,780
Feb 1998	41	491	13.95	2.30	$1,701
Jan 1998	74	545	14.70	2.15	$2,262
Dec 1997	39	541	16.32	2.41	$1,941
Nov 1997	38	558	18.19	3.09	$2,414
Oct 1997	77	600	19.25	3.15	$3,372
Sep 1997	31	608	17.74	2.95	$2,347
Aug 1997	60	630	17.86	2.55	$2,681
Jul 1997	32	628	17.58	2.25	$1,974
Jun 1997	61	496	17.24	2.26	$2,171
May 1997	31	632	18.97	2.31	$2,047
Apr 1997	39	332	17.88	2.08	$1,389
Mar 1997	77	429	18.95	1.94	$2,291
Feb 1997	78	382	20.49	2.21	$2,441
Jan 1997	38	456	23.48	3.54	$2,506
Dec 1996	115	399	23.32	—	$2,682
Nov 1996	0	269	21.97	—	$0
Oct 1996	76	327	23.31	—	$1,772
Sep 1996	36	301	22.22	—	$800
Aug 1996	38	280	20.26	—	$770
Jul 1996	37	280	19.55	—	$723
Jun 1996	76	293	18.73	—	$1,423
May 1996	37	345	19.43	—	$719
Apr 1996	36	338	21.51	—	$774
Mar 1996	78	306	19.38	—	$1,512
Feb 1996	38	261	16.98	—	$645
Jan 1996	40	308	17.07	—	$683
Dec 1995	79	315	17.19	—	$1,358
Nov 1995	39	270	16.00	—	$624
Oct 1995	39	297	15.43	—	$602
Sep 1995	77	292	16.18	—	$1,246
Aug 1995	38	283	15.92	—	$605
Jul 1995	39	340	15.24	—	$594
Jun 1995	39	361	16.41	—	$640
May 1995	38	350	17.56	—	$667
Apr 1995	76	307	17.73	—	$1,347
Mar 1995	39	389	16.44	—	$641
Feb 1995	36	321	16.58	—	$597
Jan 1995	73	292	15.92	—	$1,162
Dec 1994	73	355	15.03	—	$1,097
Nov 1994	35	337	15.90	—	$557
Oct 1994	38	409	15.58	—	$592
Sep 1994	36	384	15.29	—	$550
Aug 1994	105	429	16.13	—	$1,694
Jul 1994	0	440	17.56	—	$0
Jun 1994	71	408	17.09	—	$1,213
May 1994	35	359	15.88	—	$556
Apr 1994	70	405	14.14	—	$990
Mar 1994	69	413	12.46	—	$860
Feb 1994	36	377	12.50	—	$450
Jan 1994	70	404	12.66	—	$886
Dec 1993	68	317	12.33	—	$838
Nov 1993	67	165	14.49	—	$971
Oct 1993	35	352	15.85	—	$555
Sep 1993	69	457	15.03	—	$1,037
Aug 1993	69	467	15.66	—	$1,081
Jul 1993	69	467	15.46	—	$1,067
Jun 1993	71	559	16.79	—	$1,192
May 1993	141	641	17.68	—	$2,493
Apr 1993	37	269	18.05	—	$668
Mar 1993	36	440	18.14	—	$653
Feb 1993	124	367	17.90	—	$2,220
Jan 1993	43	438	16.93	—	$728

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.

Feb 2006 — as filed, then multipliedworked

Oil                   26 bbl  × $ 57.59 =     $1,497
Casinghead gas         0 Mcf  × $  7.75 =         $0

────────────────────────────────────────────────────
Month total                                   $1,497

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/10226 is the state's own key, not one this site invented.