CHAPMAN, A. J. "A"

Operated by RIO PETROLEUM, INC. (P-5 712840) in the PANHANDLE GRAY COUNTY FIELD field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 435District 10Field 68873001NGPA filingOilCasinghead gasSaveExport
Value, all time
$2.9 M
Jan 1993 – May 2026
Value, last 12 filed months
$40 k
at the published price for each month
Months reported
401
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 837 leases and 6,360 wells, and the rule below applies to all of them.

Discovered
1921-12-31
as the register files it
Field class
Oil
the register's own label
Between wells
467 ft
minimum
From a lease line
330 ft
minimum

A drilling unit in this field needs at least 20 acres. The field rule took effect on 1989-05-01.

The Commission's schedule remark for this field reads: UNTIL THE FLUID MIGRATION FROM SUCH STRATA IS ELIMINATED.

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.

ProgrammeFilingsWith an approval dateDatedDocket
NGPA4none

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.

StreamBasisVolumeValue
OilDisposition59,856 bbl$2,720,558
Casinghead gasProduction30,132 Mcf$136,197
Total$2,856,755

21 Mcf of this lease's gas, across 21 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 (5)

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 35.3983, -100.6857. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.4 miles. 1 well has no surveyed location and is left out of it.

35.39827, -100.68578 · centre of 4 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
20.0%
1 of 5 wells
With a plug date
20.0%
1 of 5 wells
Median depth
2,813 ft
5 wells filed one
Completion to plug
no well filed both dates

What the state filed about each well

On the RRC proration schedule
120.0%
A plug date is filed
120.0%
BothOn the schedule and plugged. Neither fact cancels the other.
120.0%
NeitherNo plug date, and not on the schedule.
480.0%

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 2,733 and 3,039 ft, median 2,813 ft, over the 5 wells that filed a depth.

Completions filed
Nov 1932 – Feb 1938
4 of 5 wells; 1 filed none
Plug dates filed
Feb 1989
1 of 5 wells; 4 filed none

5 wells

42-179823045W2,880 ftFeb 1989Yes
42-1798230342,733 ftFeb 1938
42-1798230232,760 ftOct 1937
42-1798230123,039 ftApr 1937
42-1798230012,813 ftNov 1932

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 (401)

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

401 months

May 20261800106.413.05$19,154
Apr 20260098.932.87$0
Mar 20260089.753.15$0
Feb 20260063.503.75$0
Jan 20260059.138.00$0
Dec 2025175056.664.41$9,916
Nov 20250058.593.93$0
Oct 20250059.383.30$0
Sep 20250062.743.08$0
Aug 2025172063.933.01$10,996
Jul 20250066.743.32$0
Jun 20250066.483.13$0
May 2025170060.553.23$10,294
Apr 20250062.363.54$0
Mar 20250067.704.27$0
Feb 2025164070.884.34$11,624
Jan 20250074.324.28$0
Dec 20240068.993.12$0
Nov 2024173069.052.20$11,946
Oct 20240071.372.28$0
Sep 2024171069.612.36$11,903
Aug 20240075.632.06$0
Jul 2024182079.932.15$14,547
Jun 20240078.082.63$0
May 20240078.812.20$0
Apr 2024165084.451.66$13,934
Mar 20240180.301.55$2
Feb 20241673476.091.78$12,768
Jan 202402673.023.30$86
Dec 20231682271.262.61$12,029
Nov 202303677.892.81$101
Oct 20231703685.443.09$14,636
Sep 202304589.042.74$123
Aug 20231742880.522.67$14,085
Jul 202303374.852.64$87
Jun 20231733668.962.26$12,011
May 202303370.622.23$74
Apr 20231702978.122.24$13,345
Mar 202302872.852.39$67
Feb 20231622575.112.47$12,229
Jan 202303076.533.39$102
Dec 202202776.415.73$155
Nov 20221651685.005.65$14,115
Oct 202202387.185.86$135
Sep 20221753084.888.16$15,099
Aug 202216117394.529.13$16,797
Jul 20220200101.587.54$1,508
Jun 2022173185115.097.98$21,386
May 20220191109.378.43$1,611
Apr 2022177202104.226.84$19,828
Mar 20220201108.885.08$1,020
Feb 202208291.054.86$398
Jan 202217319181.844.54$15,025
Dec 202117618871.323.90$13,285
Nov 2021018177.435.24$948
Oct 2021019079.795.71$1,086
Sep 202116919869.865.35$12,866
Aug 202117721166.024.22$12,576
Jul 202106570.783.98$259
Jun 202107969.493.38$267
May 20211638963.483.02$10,616
Apr 2021024260.362.76$668
Mar 202116918861.302.72$10,870
Feb 202105257.805.55$288
Jan 202116810650.412.81$8,767
Dec 20201729944.642.68$7,943
Nov 202005038.772.71$135
Oct 2020010136.972.48$250
Sep 20201689337.091.99$6,416
Aug 2020010739.982.39$255
Jul 2020162038.371.83$6,216
Jun 20200034.901.69$0
May 2020172016.921.81$2,910
Apr 20200014.751.80$0
Mar 20200030.341.86$0
Feb 2020164049.881.98$8,180
Jan 20200157.252.09$2
Dec 20191727959.012.30$10,332
Nov 20190055.302.75$0
Oct 20191696253.472.42$9,186
Sep 201905755.052.66$151
Aug 20191621853.112.30$8,645
Jul 20190056.272.46$0
Jun 20191693252.782.49$9,000
May 20190058.482.74$0
Apr 20191718162.632.75$10,933
Mar 2019160056.803.06$9,088
Feb 20190050.852.79$0
Jan 2019183046.033.23$8,423
Dec 201807246.594.19$301
Nov 201806952.934.24$292
Oct 20181677261.443.40$10,505
Sep 201807459.543.11$230
Aug 20181698559.403.07$10,299
Jul 201808065.142.93$235
Jun 20181777860.183.08$10,892
May 201802765.382.90$78
Apr 20181686163.842.90$10,902
Mar 2018010161.222.79$281
Feb 20181797561.782.77$11,266
Jan 201808762.874.01$349
Dec 20171736857.272.92$10,106
Nov 201707355.423.12$228
Oct 20171798949.292.98$9,088
Sep 201706147.523.09$188
Aug 201706545.373.00$195
Jul 201706243.873.09$191
Jun 20171663642.493.09$7,164
May 201708345.373.26$271
Apr 201708547.933.21$273
Mar 20171767546.772.98$8,455
Feb 201706450.452.95$189
Jan 201708349.413.42$284
Dec 201608148.763.72$302
Nov 20161836342.492.64$7,942
Oct 201606446.193.09$198
Sep 201606141.553.10$189
Aug 201607141.442.92$208
Jul 20161745541.622.92$7,403
Jun 201603745.352.69$99
May 20161802342.521.99$7,699
Apr 201602436.561.99$48
Mar 201605833.011.79$104
Feb 20161767526.472.06$4,813
Jan 201607127.352.36$168
Dec 20151787932.362.00$5,918
Nov 201506738.792.17$145
Oct 201506943.552.43$167
Sep 20151717342.992.76$7,553
Aug 201507440.162.87$213
Jul 20151707848.152.95$8,415
Jun 20151807656.152.88$10,326
May 201507055.212.96$207
Apr 201507449.822.71$200
Mar 20151716242.892.93$7,516
Feb 20151664944.662.98$7,559
Jan 201502243.433.10$68
Dec 20141647554.693.59$9,239
Nov 201407870.464.25$332
Oct 20141757678.303.90$13,999
Sep 201406986.164.05$279
Aug 20141719189.394.04$15,653
Jul 201407996.564.18$330
Jun 20141729298.164.74$17,319
May 20141809094.734.73$17,477
Apr 201407095.944.81$337
Mar 201405995.895.06$298
Feb 20141738397.406.19$17,364
Jan 201408990.404.86$433
Dec 20131708391.824.35$15,971
Nov 20131688388.853.74$15,237
Oct 201309097.423.78$340
Sep 2013086104.113.72$320
Aug 201317288104.253.52$18,241
Jul 201318094102.523.72$18,803
Jun 201308294.403.93$323
May 201308894.834.15$365
Apr 201317010293.964.28$16,410
Mar 20131829993.623.91$17,426
Feb 201308691.233.42$294
Jan 20131829191.603.42$16,982
Dec 201209586.773.42$325
Nov 20121818686.953.62$16,050
Oct 20121619189.383.40$14,700
Sep 201208594.672.92$248
Aug 201215914892.662.91$15,163
Jul 201217515285.133.02$15,357
Jun 20121699779.822.52$13,734
May 20121808191.612.49$16,691
Apr 2012084101.652.00$168
Mar 201218279105.052.22$19,295
Feb 201219064101.102.57$19,374
Jan 2012015298.092.73$416
Dec 2011014596.873.24$470
Nov 201117621795.723.31$17,565
Oct 2011020184.983.65$733
Sep 201135620183.623.99$30,570
Aug 2011021383.404.15$884
Jul 201117814294.144.52$17,398
Jun 20111646592.904.64$15,537
May 20111649798.134.40$16,521
Apr 201116940105.964.33$18,081
Mar 201117715396.364.06$17,676
Feb 201106785.644.18$280
Jan 20111739586.504.59$15,400
Dec 201017211685.734.35$15,250
Nov 20101893180.843.80$15,396
Oct 2010011878.103.51$414
Sep 201007772.633.98$306
Aug 20101677773.684.42$12,645
Jul 20103458272.554.74$25,418
Jun 2010015270.364.91$746
May 201016211571.124.24$12,008
Apr 201016712081.694.12$14,137
Mar 201032412478.394.39$25,943
Feb 201004973.585.44$267
Jan 201032411174.365.96$24,755
Dec 200906671.445.48$362
Nov 20091709774.593.75$13,044
Oct 20091699872.544.11$12,662
Sep 200909365.543.06$285
Aug 200917113867.423.22$11,973
Jul 200917012261.133.46$10,815
Jun 20091777366.163.90$11,995
May 200917712954.743.93$10,195
Apr 200917813146.773.59$8,795
Mar 200916810942.144.06$7,522
Feb 20091729432.814.63$6,079
Jan 200917113335.865.37$6,846
Dec 200817112937.105.98$7,115
Nov 2008012355.496.86$844
Oct 200818012775.246.92$14,422
Sep 20080122101.767.88$961
Aug 2008176109114.228.48$21,027
Jul 2008183145131.0811.39$25,639
Jun 2008183120131.3313.03$25,597
May 2008364130123.1711.57$46,339
Apr 2008186116110.3110.45$21,730
Mar 2008183143101.909.66$20,030
Feb 200833613792.538.77$32,292
Jan 20081828590.388.21$17,147
Dec 200716512488.337.30$15,480
Nov 200735115891.677.29$33,328
Oct 200717114882.856.92$15,192
Sep 20071681675.846.24$12,841
Aug 20074974869.066.39$34,629
Jul 2007016870.906.39$1,073
Jun 200734817662.007.55$22,905
May 200716516058.747.85$10,948
Apr 20073361659.617.81$20,154
Mar 20071809356.927.30$10,925
Feb 200716620055.108.22$10,790
Jan 20071809550.306.73$9,693
Dec 200618510056.656.92$11,172
Nov 20063659154.207.62$20,476
Oct 200618410654.906.01$10,739
Sep 20061778860.085.04$11,077
Aug 200635513768.717.34$25,398
Jul 20061824369.376.34$12,898
Jun 20061763766.286.38$11,901
May 20061752166.016.42$11,687
Apr 20061653664.397.36$10,889
Mar 20061784056.707.08$10,376
Feb 20063409257.597.75$20,294
Jan 200616812460.598.93$11,287
Dec 200534210354.9413.42$20,171
Nov 20051748454.6910.59$10,405
Oct 200516611958.3413.80$11,326
Sep 20053494061.4512.08$21,929
Aug 200517510861.519.80$11,822
Jul 200534410555.697.84$19,981
Jun 200517910752.337.38$10,157
May 20051765545.226.65$8,325
Apr 20053483949.207.36$17,409
Mar 20051639750.377.15$8,904
Feb 20053328745.226.31$15,562
Jan 20053209043.166.32$14,380
Dec 20041708439.866.75$7,343
Nov 20041688045.286.33$8,113
Oct 200417910949.706.52$9,606
Sep 20041674243.245.28$7,443
Aug 20043409442.375.55$14,928
Jul 200434710538.286.08$13,922
Jun 20042629136.106.43$10,044
May 20041769237.486.49$7,194
Apr 200417910834.475.86$6,803
Mar 200434510534.365.53$12,435
Feb 20041788832.455.51$6,261
Jan 20041809532.036.30$6,364
Dec 20031795630.266.30$5,769
Nov 20031783528.804.60$5,287
Oct 200303828.174.76$181
Sep 20031793926.314.75$4,895
Aug 20031736929.765.13$5,502
Jul 20031746429.415.17$5,448
Jun 20031787028.565.98$5,502
May 20031821826.595.97$4,947
Apr 20031762626.675.41$4,835
Mar 20031756431.146.10$5,840
Feb 200304533.487.93$357
Jan 20031758530.315.58$5,779
Dec 20021798626.914.85$5,234
Nov 20023588124.664.14$9,163
Oct 20021804726.464.23$4,962
Sep 20021846327.443.64$5,278
Aug 20021786925.963.16$4,839
Jul 200217710924.583.06$4,684
Jun 200217436823.733.34$5,357
May 200217818824.663.58$5,063
Apr 200233019823.653.51$8,500
Mar 200234717722.003.10$8,183
Feb 200218213618.222.38$3,639
Jan 200237013017.172.38$6,662
Dec 2001012916.932.36$305
Nov 200135912618.072.41$6,790
Oct 200118111219.782.53$3,863
Sep 200118310924.262.25$4,685
Aug 200118112024.873.05$4,868
Jul 200136211023.933.20$9,014
Jun 2001011324.563.82$432
May 200118310525.524.31$5,122
Apr 200136611324.685.34$9,636
Mar 200117810524.545.38$4,933
Feb 20011809527.755.77$5,543
Jan 200118214727.478.40$6,234
Dec 200018012026.889.12$5,933
Nov 200017812832.215.66$6,458
Oct 200019812531.235.15$6,827
Sep 20001857831.875.19$6,301
Aug 200017716329.644.54$5,986
Jul 200018417428.534.09$5,961
Jun 200018415629.304.40$6,077
May 20003676727.263.68$10,251
Apr 200018518424.513.12$5,108
Mar 200036820128.422.86$11,033
Feb 2000020027.622.73$545
Jan 200036525425.272.48$9,854
Dec 199918623024.282.42$5,074
Nov 199918225523.192.43$4,841
Oct 199918238320.982.80$4,892
Sep 1999021821.752.62$571
Aug 199918447219.262.88$4,901
Jul 199936133017.892.37$7,241
Jun 199907915.942.36$187
May 19991795615.792.32$2,956
Apr 19991832815.102.21$2,825
Mar 1999011512.471.84$211
Feb 19991861789.981.82$2,180
Jan 199917625110.381.90$2,304
Dec 199802929.201.77$518
Nov 199818631110.892.19$2,705
Oct 199818420912.421.97$2,697
Sep 199836213512.592.08$4,839
Aug 19983608311.301.91$4,226
Jul 1998177011.742.24$2,078
Jun 19980011.242.24$0
May 1998180012.622.21$2,272
Apr 1998164013.042.51$2,139
Mar 1998181012.802.31$2,317
Feb 1998179013.952.30$2,497
Jan 1998184014.702.15$2,705
Dec 1997175016.322.41$2,856
Nov 1997181018.193.09$3,292
Oct 1997183019.253.15$3,523
Sep 1997365017.742.95$6,475
Aug 1997181017.862.55$3,233
Jul 1997183017.582.25$3,217
Jun 1997178017.242.26$3,069
May 1997179018.972.31$3,396
Apr 1997176017.882.08$3,147
Mar 1997358018.951.94$6,784
Feb 1997177020.492.21$3,627
Jan 1997180023.483.54$4,226
Dec 1996183023.32$4,268
Nov 1996182021.97$3,999
Oct 1996182023.31$4,242
Sep 1996366022.22$8,133
Aug 1996181020.26$3,667
Jul 1996180019.55$3,519
Jun 1996181018.73$3,390
May 1996361019.43$7,014
Apr 1996181021.51$3,893
Mar 1996181019.38$3,508
Feb 1996183016.98$3,107
Jan 1996365017.07$6,231
Dec 1995184017.19$3,163
Nov 1995178016.00$2,848
Oct 1995180015.43$2,777
Sep 1995360016.18$5,825
Aug 1995176015.92$2,802
Jul 1995180015.24$2,743
Jun 1995359016.41$5,891
May 1995356017.56$6,251
Apr 1995179017.73$3,174
Mar 1995178016.44$2,926
Feb 1995354016.58$5,869
Jan 1995174015.92$2,770
Dec 1994170015.03$2,555
Nov 1994368015.90$5,851
Oct 1994180015.58$2,804
Sep 1994364115.29$5,566
Aug 1994177116.13$2,855
Jul 1994361117.56$6,339
Jun 1994178117.09$3,042
May 1994177115.88$2,811
Apr 1994363114.14$5,133
Mar 1994183112.46$2,280
Feb 1994178112.50$2,225
Jan 1994178112.66$2,253
Dec 1993363112.33$4,476
Nov 1993180114.49$2,608
Oct 1993364115.85$5,769
Sep 1993181115.03$2,720
Aug 1993369115.66$5,779
Jul 1993181115.46$2,798
Jun 1993364116.79$6,112
May 1993183117.68$3,235
Apr 1993155118.05$2,798
Mar 1993365118.14$6,621
Feb 1993310117.90$5,549
Jan 1993181116.93$3,064

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.

May 2026 — as filed, then multipliedworked
Oil                  180 bbl  × $106.41 =    $19,154
Casinghead gas         0 Mcf  × $  3.05 =         $0

────────────────────────────────────────────────────
Month total                                  $19,154

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. 10/O/435 is the state's own key, not one this site invented.