CHALK -B- DUNCAN

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

Operated by CONOCOPHILLIPS COMPANY (P-5 172232) 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 2721District 08Field 42971001Hydrogen sulphide fieldNGPA filingOilCasinghead gasSave Export

Value, all time

$2.2 M

Jan 1993 – Apr 2012

Value, last 12 filed months

$145 k

at the published price for each month

Months reported

232

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.”

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	1	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	57,510 bbl	$2,153,568
Casinghead gas	Production	4,862 Mcf	$17,806
Total			$2,171,373

1,754 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 (6)

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 32.0986, -101.2793. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.3 miles.

32.09866, -101.27932 · 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%

6 of 6 wells

With a plug date

50.0%

3 of 6 wells

Median depth

3,225 ft

6 wells filed one

Completion to plug

29.8 years

median over 3 wells

What the state filed about each well

On the RRC proration schedule

6100.0%

A plug date is filed

350.0%

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

350.0%

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 2,744 and 3,345 ft, median 3,225 ft, over the 6 wells that filed a depth.

Completions filed

Apr 1965 – Feb 2015

6 of 6 wells

Plug dates filed

Jun 1995 – May 2013

3 of 6 wells; 3 filed none

Last completion to plug: a median of 29.8 years across the 3 wells that filed both dates, with the middle half between 15.3 years and 30.0 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

6 wells


42-22710312	5	3,250 ft	Feb 2015	—	Yes
42-22710123	3	3,200 ft	Aug 2012	May 2013	Yes
42-22700987	1	3,304 ft	Jan 1989	—	Yes
42-22700989	2	3,345 ft	Dec 1988	—	Yes
42-22710313	6	2,745 ft	Sep 1965	Jun 1995	Yes
42-22710124	4	2,744 ft	Apr 1965	Jun 1995	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 (232)

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

232 months


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	352	3	95.72	3.31	$33,703
Oct 2011	423	1	84.98	3.65	$35,950
Sep 2011	363	3	83.62	3.99	$30,366
Aug 2011	316	12	83.40	4.15	$26,404
Jul 2011	152	3	94.14	4.52	$14,323
Jun 2011	12	0	92.90	4.64	$1,115
May 2011	35	0	98.13	4.40	$3,435
Apr 2011	218	0	105.96	4.33	$23,099
Mar 2011	142	0	96.36	4.06	$13,683
Feb 2011	194	8	85.64	4.18	$16,648
Jan 2011	205	9	86.50	4.59	$17,774
Dec 2010	127	11	85.73	4.35	$10,936
Nov 2010	150	1	80.84	3.80	$12,130
Oct 2010	63	0	78.10	3.51	$4,920
Sep 2010	168	25	72.63	3.98	$12,301
Aug 2010	310	43	73.68	4.42	$23,031
Jul 2010	333	35	72.55	4.74	$24,325
Jun 2010	264	22	70.36	4.91	$18,683
May 2010	278	40	71.12	4.24	$19,941
Apr 2010	262	32	81.69	4.12	$21,535
Mar 2010	268	51	78.39	4.39	$21,232
Feb 2010	273	45	73.58	5.44	$20,332
Jan 2010	269	54	74.36	5.96	$20,325
Dec 2009	260	69	71.44	5.48	$18,953
Nov 2009	176	29	74.59	3.75	$13,237
Oct 2009	226	40	72.54	4.11	$16,558
Sep 2009	6	0	65.54	3.06	$393
Aug 2009	272	43	67.42	3.22	$18,477
Jul 2009	357	26	61.13	3.46	$21,913
Jun 2009	318	26	66.16	3.90	$21,140
May 2009	322	23	54.74	3.93	$17,717
Apr 2009	299	26	46.77	3.59	$14,078
Mar 2009	329	33	42.14	4.06	$13,998
Feb 2009	248	20	32.81	4.63	$8,230
Jan 2009	260	24	35.86	5.37	$9,453
Dec 2008	233	24	37.10	5.98	$8,788
Nov 2008	250	30	55.49	6.86	$14,078
Oct 2008	269	28	75.24	6.92	$20,433
Sep 2008	178	21	101.76	7.88	$18,279
Aug 2008	176	40	114.22	8.48	$20,442
Jul 2008	158	35	131.08	11.39	$21,109
Jun 2008	143	28	131.33	13.03	$19,145
May 2008	145	38	123.17	11.57	$18,299
Apr 2008	142	31	110.31	10.45	$15,988
Mar 2008	155	40	101.90	9.66	$16,181
Feb 2008	161	40	92.53	8.77	$15,248
Jan 2008	195	41	90.38	8.21	$17,961
Dec 2007	184	49	88.33	7.30	$16,611
Nov 2007	146	33	91.67	7.29	$13,624
Oct 2007	154	36	82.85	6.92	$13,008
Sep 2007	189	43	75.84	6.24	$14,602
Aug 2007	233	13	69.06	6.39	$16,174
Jul 2007	225	0	70.90	6.39	$15,953
Jun 2007	237	0	62.00	7.55	$14,694
May 2007	237	0	58.74	7.85	$13,921
Apr 2007	214	0	59.61	7.81	$12,757
Mar 2007	237	0	56.92	7.30	$13,490
Feb 2007	49	0	55.10	8.22	$2,700
Jan 2007	51	0	50.30	6.73	$2,565
Dec 2006	44	0	56.65	6.92	$2,493
Nov 2006	0	0	54.20	7.62	$0
Oct 2006	0	0	54.90	6.01	$0
Sep 2006	0	0	60.08	5.04	$0
Aug 2006	20	0	68.71	7.34	$1,374
Jul 2006	431	14	69.37	6.34	$29,987
Jun 2006	377	10	66.28	6.38	$25,051
May 2006	356	12	66.01	6.42	$23,577
Apr 2006	416	22	64.39	7.36	$26,948
Mar 2006	348	16	56.70	7.08	$19,845
Feb 2006	426	27	57.59	7.75	$24,743
Jan 2006	297	7	60.59	8.93	$18,058
Dec 2005	380	12	54.94	13.42	$21,038
Nov 2005	383	17	54.69	10.59	$21,126
Oct 2005	445	14	58.34	13.80	$26,154
Sep 2005	442	14	61.45	12.08	$27,330
Aug 2005	406	0	61.51	9.80	$24,973
Jul 2005	463	22	55.69	7.84	$25,957
Jun 2005	471	23	52.33	7.38	$24,817
May 2005	273	33	45.22	6.65	$12,565
Apr 2005	289	26	49.20	7.36	$14,410
Mar 2005	285	23	50.37	7.15	$14,520
Feb 2005	51	23	45.22	6.31	$2,451
Jan 2005	268	15	43.16	6.32	$11,662
Dec 2004	297	27	39.86	6.75	$12,021
Nov 2004	305	24	45.28	6.33	$13,962
Oct 2004	317	20	49.70	6.52	$15,885
Sep 2004	307	20	43.24	5.28	$13,380
Aug 2004	318	23	42.37	5.55	$13,601
Jul 2004	252	10	38.28	6.08	$9,707
Jun 2004	253	19	36.10	6.43	$9,256
May 2004	32	25	37.48	6.49	$1,362
Apr 2004	194	17	34.47	5.86	$6,787
Mar 2004	179	20	34.36	5.53	$6,261
Feb 2004	188	23	32.45	5.51	$6,227
Jan 2004	210	26	32.03	6.30	$6,890
Dec 2003	201	21	30.26	6.30	$6,215
Nov 2003	208	23	28.80	4.60	$6,096
Oct 2003	212	23	28.17	4.76	$6,082
Sep 2003	209	27	26.31	4.75	$5,627
Aug 2003	193	23	29.76	5.13	$5,862
Jul 2003	198	25	29.41	5.17	$5,952
Jun 2003	182	24	28.56	5.98	$5,342
May 2003	229	31	26.59	5.97	$6,274
Apr 2003	217	30	26.67	5.41	$5,950
Mar 2003	230	27	31.14	6.10	$7,327
Feb 2003	222	27	33.48	7.93	$7,647
Jan 2003	371	31	30.31	5.58	$11,418
Dec 2002	353	31	26.91	4.85	$9,650
Nov 2002	328	35	24.66	4.14	$8,233
Oct 2002	291	37	26.46	4.23	$7,856
Sep 2002	272	34	27.44	3.64	$7,587
Aug 2002	485	42	25.96	3.16	$12,723
Jul 2002	280	44	24.58	3.06	$7,017
Jun 2002	259	47	23.73	3.34	$6,303
May 2002	279	47	24.66	3.58	$7,049
Apr 2002	301	32	23.65	3.51	$7,231
Mar 2002	318	25	22.00	3.10	$7,074
Feb 2002	291	22	18.22	2.38	$5,354
Jan 2002	301	24	17.17	2.38	$5,225
Dec 2001	316	24	16.93	2.36	$5,407
Nov 2001	206	20	18.07	2.41	$3,771
Oct 2001	201	23	19.78	2.53	$4,034
Sep 2001	150	25	24.26	2.25	$3,695
Aug 2001	181	31	24.87	3.05	$4,596
Jul 2001	283	32	23.93	3.20	$6,875
Jun 2001	297	33	24.56	3.82	$7,421
May 2001	396	28	25.52	4.31	$10,227
Apr 2001	356	17	24.68	5.34	$8,877
Mar 2001	158	27	24.54	5.38	$4,022
Feb 2001	149	27	27.75	5.77	$4,290
Jan 2001	166	38	27.47	8.40	$4,879
Dec 2000	205	38	26.88	9.12	$5,857
Nov 2000	210	33	32.21	5.66	$6,951
Oct 2000	201	27	31.23	5.15	$6,416
Sep 2000	193	1	31.87	5.19	$6,156
Aug 2000	249	1	29.64	4.54	$7,385
Jul 2000	228	0	28.53	4.09	$6,505
Jun 2000	270	0	29.30	4.40	$7,911
May 2000	290	1	27.26	3.68	$7,909
Apr 2000	213	1	24.51	3.12	$5,224
Mar 2000	151	1	28.42	2.86	$4,294
Feb 2000	232	1	27.62	2.73	$6,411
Jan 2000	216	1	25.27	2.48	$5,461
Dec 1999	158	1	24.28	2.42	$3,839
Nov 1999	150	1	23.19	2.43	$3,481
Oct 1999	199	1	20.98	2.80	$4,178
Sep 1999	219	1	21.75	2.62	$4,766
Aug 1999	272	1	19.26	2.88	$5,242
Jul 1999	309	1	17.89	2.37	$5,530
Jun 1999	154	1	15.94	2.36	$2,457
May 1999	272	1	15.79	2.32	$4,297
Apr 1999	211	1	15.10	2.21	$3,188
Mar 1999	297	1	12.47	1.84	$3,705
Feb 1999	312	1	9.98	1.82	$3,116
Jan 1999	248	1	10.38	1.90	$2,576
Dec 1998	274	1	9.20	1.77	$2,523
Nov 1998	259	1	10.89	2.19	$2,823
Oct 1998	300	1	12.42	1.97	$3,728
Sep 1998	254	1	12.59	2.08	$3,200
Aug 1998	208	1	11.30	1.91	$2,352
Jul 1998	286	1	11.74	2.24	$3,360
Jun 1998	246	1	11.24	2.24	$2,767
May 1998	313	1	12.62	2.21	$3,952
Apr 1998	260	1	13.04	2.51	$3,393
Mar 1998	269	1	12.80	2.31	$3,446
Feb 1998	198	1	13.95	2.30	$2,764
Jan 1998	308	1	14.70	2.15	$4,530
Dec 1997	313	1	16.32	2.41	$5,111
Nov 1997	322	1	18.19	3.09	$5,860
Oct 1997	380	1	19.25	3.15	$7,318
Sep 1997	328	1	17.74	2.95	$5,822
Aug 1997	212	1	17.86	2.55	$3,789
Jul 1997	184	1	17.58	2.25	$3,237
Jun 1997	232	1	17.24	2.26	$4,002
May 1997	230	1	18.97	2.31	$4,365
Apr 1997	286	1	17.88	2.08	$5,116
Mar 1997	214	1	18.95	1.94	$4,057
Feb 1997	282	1	20.49	2.21	$5,780
Jan 1997	304	0	23.48	3.54	$7,138
Dec 1996	303	1	23.32	—	$7,066
Nov 1996	315	1	21.97	—	$6,921
Oct 1996	350	1	23.31	—	$8,159
Sep 1996	424	1	22.22	—	$9,421
Aug 1996	203	1	20.26	—	$4,113
Jul 1996	324	1	19.55	—	$6,334
Jun 1996	466	1	18.73	—	$8,728
May 1996	206	1	19.43	—	$4,003
Apr 1996	333	1	21.51	—	$7,163
Mar 1996	204	1	19.38	—	$3,954
Feb 1996	221	1	16.98	—	$3,753
Jan 1996	309	94	17.07	—	$5,275
Dec 1995	225	147	17.19	—	$3,868
Nov 1995	176	1	16.00	—	$2,816
Oct 1995	451	1	15.43	—	$6,959
Sep 1995	461	138	16.18	—	$7,459
Aug 1995	157	95	15.92	—	$2,499
Jul 1995	240	1	15.24	—	$3,658
Jun 1995	247	125	16.41	—	$4,053
May 1995	229	129	17.56	—	$4,021
Apr 1995	402	131	17.73	—	$7,127
Mar 1995	712	131	16.44	—	$11,705
Feb 1995	463	124	16.58	—	$7,677
Jan 1995	693	21	15.92	—	$11,033
Dec 1994	333	122	15.03	—	$5,005
Nov 1994	303	18	15.90	—	$4,818
Oct 1994	331	20	15.58	—	$5,157
Sep 1994	292	17	15.29	—	$4,465
Aug 1994	308	23	16.13	—	$4,968
Jul 1994	308	22	17.56	—	$5,408
Jun 1994	252	23	17.09	—	$4,307
May 1994	297	23	15.88	—	$4,716
Apr 1994	270	23	14.14	—	$3,818
Mar 1994	336	23	12.46	—	$4,187
Feb 1994	141	19	12.50	—	$1,763
Jan 1994	241	23	12.66	—	$3,051
Dec 1993	308	23	12.33	—	$3,798
Nov 1993	334	23	14.49	—	$4,840
Oct 1993	506	22	15.85	—	$8,020
Sep 1993	52	7	15.03	—	$782
Aug 1993	160	23	15.66	—	$2,506
Jul 1993	149	23	15.46	—	$2,304
Jun 1993	109	17	16.79	—	$1,830
May 1993	169	23	17.68	—	$2,988
Apr 1993	151	21	18.05	—	$2,726
Mar 1993	202	24	18.14	—	$3,664
Feb 1993	139	20	17.90	—	$2,488
Jan 1993	161	23	16.93	—	$2,726

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                  352 bbl  × $ 95.72 =    $33,693
Casinghead gas         3 Mcf  × $  3.31 =        $10

────────────────────────────────────────────────────
Month total                                  $33,703

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/2721 is the state's own key, not one this site invented.