CHAPMAN

Operated by CARTER EXPLORATION COMPANY (P-5 136850) in the CHAPMAN RANCH (F-31) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 8911District 04Field 17075180OilCasinghead gasSaveExport
Value, all time
$564 k
Jan 1993 – Dec 2003
Value, last 12 filed months
$845
at the published price for each month
Months reported
132
no gaps in the span
Streams
2
oil, casinghead gas

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 2 leases and 3 wells, and the rule below applies to all of them.

Discovered
1975-05-24
as the register files it
Field class
Oil
the register's own label
Between wells
no field rule filed
From a lease line
no field rule filed

The Commission's schedule remark for this field reads: CHAPMAN RANCH (UPPER FRIO CONS) 17075667

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.

StreamBasisVolumeValue
OilDisposition31,807 bbl$560,267
Casinghead gasProduction3,994 Mcf$3,768
Total$564,035

2,527 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 27.6053, -97.5385. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.2 miles.

27.60525, -97.53853 · centre of the wells drawn, derived

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
6,644 ft
2 wells filed one
Completion to plug
15.0 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 6,271 and 7,016 ft, median 6,644 ft, over the 2 wells that filed a depth.

Completions filed
May 1977 – Apr 2002
2 of 2 wells
Plug dates filed
Oct 2003 – Oct 2005
2 of 2 wells

Last completion to plug: a median of 15.0 years across the 2 wells that filed both dates, with the middle half between 9.3 years and 20.7 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

2 wells

42-3553121276,271 ftApr 2002Oct 2005Yes
42-3553057217,016 ftMay 1977Oct 2003Yes

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 (132)

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

132 months

Dec 20030030.266.30$0
Nov 20030028.804.60$0
Oct 200330028.174.76$845
Sep 20030026.314.75$0
Aug 20030029.765.13$0
Jul 20030029.415.17$0
Jun 20030028.565.98$0
May 20030026.595.97$0
Apr 20030026.675.41$0
Mar 20030031.146.10$0
Feb 20030033.487.93$0
Jan 20030030.315.58$0
Dec 20020026.914.85$0
Nov 20020024.664.14$0
Oct 20020026.464.23$0
Sep 20020027.443.64$0
Aug 20020025.963.16$0
Jul 20020024.583.06$0
Jun 20020023.733.34$0
May 20020024.663.58$0
Apr 20020023.653.51$0
Mar 20020022.003.10$0
Feb 20020018.222.38$0
Jan 20020017.172.38$0
Dec 20010016.932.36$0
Nov 20010018.072.41$0
Oct 20010019.782.53$0
Sep 20010024.262.25$0
Aug 20010024.873.05$0
Jul 20010023.933.20$0
Jun 20010024.563.82$0
May 20010025.524.31$0
Apr 20010024.685.34$0
Mar 20010024.545.38$0
Feb 20010027.755.77$0
Jan 20010027.478.40$0
Dec 20000026.889.12$0
Nov 20000032.215.66$0
Oct 20000031.235.15$0
Sep 200050531.875.19$1,619
Aug 20003382929.644.54$10,150
Jul 20003393528.534.09$9,815
Jun 20003353729.304.40$9,978
May 20003384227.263.68$9,368
Apr 20004384524.513.12$10,876
Mar 20003474528.422.86$9,990
Feb 20004584427.622.73$12,770
Jan 20003855025.272.48$9,853
Dec 19994024324.282.42$9,865
Nov 19992702823.192.43$6,329
Oct 19991802220.982.80$3,838
Sep 199918421.752.62$402
Aug 19990019.262.88$0
Jul 19990017.892.37$0
Jun 19991291115.942.36$2,082
May 19993432315.792.32$5,469
Apr 19993502515.102.21$5,340
Mar 19993563412.471.84$4,502
Feb 1999159279.981.82$1,636
Jan 19992112410.381.90$2,236
Dec 1998380429.201.77$3,570
Nov 1998803610.892.19$950
Oct 199862812.421.97$130
Sep 19982421112.592.08$3,070
Aug 19982353611.301.91$2,724
Jul 19983664411.742.24$4,395
Jun 19983142611.242.24$3,588
May 19982362712.622.21$3,038
Apr 19985105013.042.51$6,776
Mar 19982554112.802.31$3,359
Feb 19985265113.952.30$7,455
Jan 19986057714.702.15$9,059
Dec 1997150916.322.41$2,470
Nov 19972614018.193.09$4,871
Oct 19972221919.253.15$4,333
Sep 19973183917.742.95$5,757
Aug 19973553717.862.55$6,435
Jul 19973564117.582.25$6,351
Jun 19973604017.242.26$6,297
May 19973403518.972.31$6,531
Apr 19973313517.882.08$5,991
Mar 19974795018.951.94$9,174
Feb 19972833720.492.21$5,880
Jan 19973844323.483.54$9,169
Dec 19963563923.32$8,302
Nov 19963104021.97$6,811
Oct 19963483923.31$8,112
Sep 19965623222.22$12,488
Aug 19961704020.26$3,444
Jul 19964494519.55$8,778
Jun 19963425218.73$6,406
May 19962903619.43$5,635
Apr 19962702621.51$5,808
Mar 19963003719.38$5,814
Feb 19962122416.98$3,600
Jan 19962693417.07$4,592
Dec 19954803517.19$8,251
Nov 19952053416.00$3,280
Oct 19952353215.43$3,626
Sep 19952451616.18$3,964
Aug 19954255915.92$6,766
Jul 19953082515.24$4,694
Jun 19953003116.41$4,923
May 19954003217.56$7,024
Apr 19953515617.73$6,223
Mar 19953433816.44$5,639
Feb 19953593916.58$5,952
Jan 19954294815.92$6,830
Dec 19944084715.03$6,132
Nov 19943524115.90$5,597
Oct 19943734915.58$5,811
Sep 19942441815.29$3,731
Aug 19944504716.13$7,259
Jul 19944454417.56$7,814
Jun 19944715117.09$8,049
May 19944814715.88$7,638
Apr 19944384814.14$6,193
Mar 19944193412.46$5,221
Feb 19944104712.50$5,125
Jan 19944885012.66$6,178
Dec 19934124212.33$5,080
Nov 199361117014.49$8,853
Oct 199340212515.85$6,372
Sep 199337110815.03$5,576
Aug 199356015015.66$8,770
Jul 199356115415.46$8,673
Jun 199337513316.79$6,296
May 199352417617.68$9,264
Apr 1993193518.05$3,484
Mar 19935531518.14$10,031
Feb 19936521917.90$11,671
Jan 19935861816.93$9,921

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.

Oct 2003 — as filed, then multipliedworked
Oil                   30 bbl  × $ 28.17 =       $845
Casinghead gas         0 Mcf  × $  4.76 =         $0

────────────────────────────────────────────────────
Month total                                     $845

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. 04/O/8911 is the state's own key, not one this site invented.