CHALKEY

Operated by OLSEN ENERGY INC. (P-5 621750) in the LEHN-APCO, S. (WICHITA-ALBANY) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Gas lease lease 74544District 08Field 53010500Hydrogen sulphide fieldCondensateGasSaveExport
Value, all time
$2.7 M
Jan 1993 – May 2026
Value, last 12 filed months
$6 k
at the published price for each month
Months reported
401
no gaps in the span
Streams
2
condensate, 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 31 leases and 36 wells, and the rule below applies to all of them.

Discovered
1977-07-05
as the register files it
Field class
Oil and gas
the register's own label
Between wells
1,200 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 1992-12-14.

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: TO 4645'

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
CondensateDisposition4,624 bbl$237,864
GasProduction946,576 Mcf$2,421,310
Total$2,659,174

338,240 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 (1)

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 31.1121, -102.6847. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.0 miles.

31.11212, -102.68467 · 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
0.0%
0 of 1 wells
With a plug date
0.0%
0 of 1 wells
Median depth
4,730 ft
1 wells filed one
Completion to plug
no well filed both dates

What the state filed about each well

On the RRC proration schedule
00.0%
A plug date is filed
00.0%
BothOn the schedule and plugged. Neither fact cancels the other.
00.0%
NeitherNo plug date, and not on the schedule.
1100.0%

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

The one well that filed a depth was drilled to 4,730 ft.

Completions filed
Sep 1977
1 of 1 wells

1 well

42-371323312 C4,730 ftSep 1977

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 202600106.413.05$0
Apr 20260098.932.87$0
Mar 20260089.753.15$0
Feb 2026019363.503.75$724
Jan 202602259.138.00$176
Dec 2025034956.664.41$1,540
Nov 2025013558.593.93$530
Oct 20250059.383.30$0
Sep 2025016062.743.08$492
Aug 2025013863.933.01$416
Jul 2025018266.743.32$603
Jun 2025032866.483.13$1,026
May 2025051160.553.23$1,652
Apr 2025033562.363.54$1,187
Mar 2025022767.704.27$969
Feb 2025027070.884.34$1,172
Jan 202505374.324.28$227
Dec 2024073668.993.12$2,297
Nov 2024068369.052.20$1,502
Oct 20240071.372.28$0
Sep 20240069.612.36$0
Aug 20240075.632.06$0
Jul 20240079.932.15$0
Jun 20240078.082.63$0
May 2024027278.812.20$598
Apr 2024050884.451.66$843
Mar 2024062680.301.55$967
Feb 2024049976.091.78$890
Jan 2024046473.023.30$1,530
Dec 2023052971.262.61$1,381
Nov 2023044677.892.81$1,252
Oct 2023037485.443.09$1,155
Sep 2023054889.042.74$1,499
Aug 2023062280.522.67$1,663
Jul 2023094174.852.64$2,486
Jun 2023088968.962.26$2,008
May 202301,01570.622.23$2,261
Apr 2023086478.122.24$1,933
Mar 2023073072.852.39$1,747
Feb 2023066275.112.47$1,632
Jan 2023086676.533.39$2,934
Dec 2022071976.415.73$4,119
Nov 2022093085.005.65$5,251
Oct 2022098387.185.86$5,764
Sep 2022095684.888.16$7,804
Aug 2022097994.529.13$8,935
Jul 20220911101.587.54$6,871
Jun 20220687115.097.98$5,480
May 202201,033109.378.43$8,711
Apr 20220969104.226.84$6,626
Mar 20220974108.885.08$4,944
Feb 2022090291.054.86$4,383
Jan 202201,01581.844.54$4,606
Dec 202101,04571.323.90$4,075
Nov 2021094377.435.24$4,938
Oct 202101,12779.795.71$6,440
Sep 2021070069.865.35$3,746
Aug 2021098266.024.22$4,145
Jul 202101,08270.783.98$4,309
Jun 202101,00169.493.38$3,384
May 202101,27163.483.02$3,835
Apr 2021083260.362.76$2,295
Mar 2021087661.302.72$2,380
Feb 2021062057.805.55$3,440
Jan 2021072150.412.81$2,026
Dec 2020051644.642.68$1,381
Nov 2020090838.772.71$2,458
Oct 202001,02136.972.48$2,530
Sep 2020096437.091.99$1,919
Aug 2020095139.982.39$2,268
Jul 2020020738.371.83$378
Jun 20200034.901.69$0
May 2020018316.921.81$332
Apr 2020031414.751.80$567
Mar 202001,30430.341.86$2,421
Feb 202001,03149.881.98$2,042
Jan 202001,34157.252.09$2,809
Dec 201901,34159.012.30$3,090
Nov 201901,36655.302.75$3,757
Oct 201901,32253.472.42$3,197
Sep 201901,34655.052.66$3,577
Aug 201901,34353.112.30$3,095
Jul 201901,31856.272.46$3,242
Jun 201901,21952.782.49$3,037
May 2019056758.482.74$1,554
Apr 201901,06962.632.75$2,941
Mar 201901,45156.803.06$4,443
Feb 201901,30450.852.79$3,641
Jan 201901,44246.033.23$4,655
Dec 201801,45946.594.19$6,107
Nov 201801,46552.934.24$6,208
Oct 201801,39261.443.40$4,730
Sep 201801,39859.543.11$4,345
Aug 201801,30959.403.07$4,014
Jul 201801,11665.142.93$3,272
Jun 201801,45860.183.08$4,486
May 201801,20165.382.90$3,484
Apr 2018069963.842.90$2,028
Mar 201801,00861.222.79$2,809
Feb 201801,05461.782.77$2,915
Jan 201801,05262.874.01$4,218
Dec 201701,04757.272.92$3,059
Nov 2017030255.423.12$942
Oct 201701,11249.292.98$3,318
Sep 2017088047.523.09$2,717
Aug 2017097345.373.00$2,923
Jul 2017084143.873.09$2,596
Jun 2017455342.493.09$1,877
May 201701,00545.373.26$3,280
Apr 20172289347.933.21$3,922
Mar 2017311,11946.772.98$4,789
Feb 2017141,11450.452.95$3,996
Jan 2017621,23449.413.42$7,282
Dec 2016461,42948.763.72$7,563
Nov 2016641,00442.492.64$5,374
Oct 2016022946.193.09$708
Sep 2016509441.553.10$2,369
Aug 2016031541.442.92$921
Jul 2016034541.622.92$1,009
Jun 2016022945.352.69$615
May 201608742.521.99$173
Apr 201602436.561.99$48
Mar 201606333.011.79$113
Feb 201602526.472.06$52
Jan 2016043827.352.36$1,036
Dec 20154545432.362.00$2,365
Nov 2015041438.792.17$897
Oct 2015042443.552.43$1,029
Sep 2015037742.992.76$1,040
Aug 2015026740.162.87$767
Jul 2015024648.152.95$724
Jun 2015030756.152.88$885
May 2015036455.212.96$1,076
Apr 201516540549.822.71$9,316
Mar 2015038142.892.93$1,118
Feb 2015043244.662.98$1,286
Jan 2015067243.433.10$2,084
Dec 2014075754.693.59$2,719
Nov 2014066570.464.25$2,827
Oct 2014057778.303.90$2,251
Sep 2014055586.164.05$2,245
Aug 2014072489.394.04$2,921
Jul 2014060396.564.18$2,520
Jun 2014057898.164.74$2,738
May 2014076394.734.73$3,606
Apr 2014060895.944.81$2,924
Mar 2014040195.895.06$2,028
Feb 201420775997.406.19$24,862
Jan 2014077090.404.86$3,743
Dec 2013071091.824.35$3,092
Nov 2013076288.853.74$2,849
Oct 2013072997.423.78$2,755
Sep 201392696104.113.72$12,166
Aug 20130510104.253.52$1,797
Jul 20130678102.523.72$2,521
Jun 2013082994.403.93$3,261
May 20139176494.834.15$11,799
Apr 201301,00493.964.28$4,300
Mar 201301,16593.623.91$4,558
Feb 201301,09091.233.42$3,728
Jan 201301,17891.603.42$4,029
Dec 201201,24386.773.42$4,251
Nov 201201,20986.953.62$4,383
Oct 201201,27589.383.40$4,335
Sep 201201,13494.672.92$3,309
Aug 2012991,19792.662.91$12,654
Jul 201201,13485.133.02$3,426
Jun 201201,14379.822.52$2,879
May 2012086591.612.49$2,152
Apr 20120901101.652.00$1,799
Mar 201201,328105.052.22$2,951
Feb 20122161,221101.102.57$24,976
Jan 201201,31398.092.73$3,590
Dec 201101,33196.873.24$4,312
Nov 201101,34195.723.31$4,440
Oct 201101,33184.983.65$4,856
Sep 201101,32983.623.99$5,297
Aug 201101,17483.404.15$4,871
Jul 201101,16394.144.52$5,254
Jun 20111061,16092.904.64$15,230
May 201101,22498.134.40$5,392
Apr 201101,135105.964.33$4,918
Mar 20111131,11896.364.06$15,425
Feb 201101,06885.644.18$4,464
Jan 201101,20686.504.59$5,534
Dec 201001,16885.734.35$5,078
Nov 201001,09380.843.80$4,148
Oct 201001,19378.103.51$4,186
Sep 2010091272.633.98$3,629
Aug 20101161,06573.684.42$13,254
Jul 2010078872.554.74$3,732
Jun 2010991,04970.364.91$12,117
May 201001,06371.124.24$4,502
Apr 20109895881.694.12$11,955
Mar 2010059978.394.39$2,629
Feb 2010053873.585.44$2,928
Jan 201001,22874.365.96$7,324
Dec 200901,53171.445.48$8,396
Nov 200901,28874.593.75$4,832
Oct 200901,37272.544.11$5,639
Sep 20091011,24065.543.06$10,420
Aug 200901,33767.423.22$4,303
Jul 200901,17161.133.46$4,057
Jun 2009901,10566.163.90$10,258
May 200901,34754.743.93$5,288
Apr 2009581,39046.773.59$7,699
Mar 200901,41142.144.06$5,727
Feb 200901,29532.814.63$6,000
Jan 200901,47235.865.37$7,906
Dec 2008641,49737.105.98$11,322
Nov 200801,48455.496.86$10,181
Oct 200801,28175.246.92$8,867
Sep 200801,351101.767.88$10,642
Aug 200801,323114.228.48$11,223
Jul 200801,384131.0811.39$15,763
Jun 2008581,456131.3313.03$26,593
May 2008591,510123.1711.57$24,744
Apr 200801,601110.3110.45$16,738
Mar 2008561,590101.909.66$21,072
Feb 200801,40592.538.77$12,323
Jan 200801,67690.388.21$13,753
Dec 200701,66288.337.30$12,136
Nov 200701,66891.677.29$12,163
Oct 2007581,79382.856.92$17,216
Sep 200701,66075.846.24$10,365
Aug 2007571,75569.066.39$15,147
Jul 200701,67770.906.39$10,713
Jun 200701,66862.007.55$12,591
May 2007561,51758.747.85$15,192
Apr 2007089359.617.81$6,970
Mar 2007561,55256.927.30$14,520
Feb 200701,55355.108.22$12,759
Jan 2007099950.306.73$6,720
Dec 200601,57956.656.92$10,924
Nov 2006631,62354.207.62$15,778
Oct 2006093354.906.01$5,611
Sep 200601,42260.085.04$7,163
Aug 200601,60468.717.34$11,773
Jul 2006094769.376.34$6,007
Jun 2006581,64666.286.38$14,352
May 200601,81766.016.42$11,674
Apr 2006571,29564.397.36$13,202
Mar 200601,67956.707.08$11,892
Feb 200681,67457.597.75$13,436
Jan 200601,63860.598.93$14,633
Dec 200501,51654.9413.42$20,338
Nov 200581,48154.6910.59$16,119
Oct 200501,18758.3413.80$16,376
Sep 200501,23161.4512.08$14,869
Aug 200581,65061.519.80$16,657
Jul 200501,68855.697.84$13,240
Jun 200501,56652.337.38$11,559
May 200501,40445.226.65$9,338
Apr 200501,05949.207.36$7,795
Mar 2005985250.377.15$6,549
Feb 2005082145.226.31$5,182
Jan 2005078143.166.32$4,938
Dec 200401,11539.866.75$7,527
Nov 200401,75445.286.33$11,104
Oct 200402,07349.706.52$13,506
Sep 200481,96943.245.28$10,750
Aug 200402,12042.375.55$11,767
Jul 200492,19238.286.08$13,681
Jun 200402,14136.106.43$13,773
May 200402,35037.486.49$15,262
Apr 200402,15034.475.86$12,596
Mar 200402,36634.365.53$13,084
Feb 200401,71032.455.51$9,421
Jan 200491,71932.036.30$11,117
Dec 200302,20430.266.30$13,889
Nov 200302,27728.804.60$10,463
Oct 200302,45028.174.76$11,661
Sep 200382,38226.314.75$11,523
Aug 200382,48129.765.13$12,965
Jul 200302,45729.415.17$12,705
Jun 200302,34528.565.98$14,030
May 200302,56626.595.97$15,326
Apr 200302,58426.675.41$13,972
Mar 200302,56031.146.10$15,606
Feb 200302,11433.487.93$16,755
Jan 2003172,59730.315.58$15,012
Dec 200202,27626.914.85$11,047
Nov 200282,64424.664.14$11,135
Oct 200202,67426.464.23$11,309
Sep 200292,22027.443.64$8,317
Aug 200202,47425.963.16$7,828
Jul 200202,45924.583.06$7,529
Jun 200202,34323.733.34$7,822
May 2002172,91324.663.58$10,859
Apr 200202,85723.653.51$10,035
Mar 200282,31722.003.10$7,365
Feb 200202,04518.222.38$4,858
Jan 2002073817.172.38$1,753
Dec 200101,46516.932.36$3,464
Nov 200102,65318.072.41$6,382
Oct 200182,85919.782.53$7,388
Sep 200183,10424.262.25$7,182
Aug 200103,44324.873.05$10,512
Jul 200193,16423.933.20$10,331
Jun 200103,37924.563.82$12,922
May 200183,34425.524.31$14,608
Apr 200163,46924.685.34$18,656
Mar 200183,45024.545.38$18,745
Feb 200103,16027.755.77$18,224
Jan 2001173,30027.478.40$28,183
Dec 200003,49126.889.12$31,847
Nov 200003,43532.215.66$19,435
Oct 200003,79831.235.15$19,543
Sep 200003,77131.875.19$19,558
Aug 200093,16229.644.54$14,625
Jul 2000183,97128.534.09$16,754
Jun 200083,82829.304.40$17,067
May 200003,98627.263.68$14,667
Apr 200004,31524.513.12$13,446
Mar 2000174,78828.422.86$14,176
Feb 200004,62527.622.73$12,610
Jan 200094,76125.272.48$12,037
Dec 199904,57724.282.42$11,093
Nov 199994,18123.192.43$10,385
Oct 199903,90720.982.80$10,954
Sep 1999173,96621.752.62$10,756
Aug 199904,14319.262.88$11,914
Jul 199983,83117.892.37$9,232
Jun 199994,43615.942.36$10,622
May 199984,76815.792.32$11,193
Apr 199984,48415.102.21$10,022
Mar 199984,50812.471.84$8,387
Feb 199974,9199.981.82$9,012
Jan 1999185,69910.381.90$11,015
Dec 199805,6409.201.77$10,002
Nov 199894,86810.892.19$10,738
Oct 199894,18012.421.97$8,343
Sep 199804,83812.592.08$10,076
Aug 1998185,22011.301.91$10,160
Jul 199895,36111.742.24$12,100
Jun 199895,59011.242.24$12,608
May 1998185,96012.622.21$13,377
Apr 199895,86113.042.51$14,801
Mar 199896,26812.802.31$14,591
Feb 199895,89613.952.30$13,681
Jan 199886,66814.702.15$14,486
Dec 1997177,74316.322.41$18,947
Nov 199797,05318.193.09$21,945
Oct 1997177,33919.253.15$23,444
Sep 1997185,80017.742.95$17,458
Aug 199795,24917.862.55$13,571
Jul 1997177,37517.582.25$16,870
Jun 1997187,40517.242.26$17,025
May 1997187,69518.972.31$18,105
Apr 199796,30717.882.08$13,297
Mar 1997187,52918.951.94$14,941
Feb 1997177,28320.492.21$16,414
Jan 1997277,38123.483.54$26,760
Dec 1996274,65523.32$630
Nov 199604,52621.97$0
Oct 199604,66123.31$0
Sep 1996103,52822.22$222
Aug 199695,45620.26$182
Jul 1996106,20719.55$196
Jun 1996375,71318.73$693
May 199604,71719.43$0
Apr 199694,22821.51$194
Mar 1996364,60719.38$698
Feb 199604,77916.98$0
Jan 1996195,80417.07$324
Dec 1995205,65017.19$344
Nov 1995205,05416.00$320
Oct 1995184,44115.43$278
Sep 1995384,87216.18$615
Aug 199505,31015.92$0
Jul 1995375,59615.24$564
Jun 199505,62716.41$0
May 1995196,82217.56$334
Apr 1995286,15417.73$496
Mar 1995186,92316.44$296
Feb 1995186,98116.58$298
Jan 1995357,47415.92$557
Dec 1994187,11815.03$271
Nov 1994556,36515.90$875
Oct 199405,38415.58$0
Sep 1994365,78215.29$550
Aug 1994256,52716.13$403
Jul 1994637,49017.56$1,106
Jun 1994376,83217.09$632
May 1994258,21515.88$397
Apr 1994258,31414.14$354
Mar 1994137,63312.46$162
Feb 1994758,46912.50$938
Jan 1994389,39812.66$481
Dec 1993257,62512.33$308
Nov 1993259,80514.49$362
Oct 19932510,72815.85$396
Sep 1993388,43815.03$571
Aug 1993508,04615.66$783
Jul 19934910,59115.46$758
Jun 19935011,12316.79$840
May 19934911,49117.68$866
Apr 19936210,89118.05$1,119
Mar 19935011,10718.14$907
Feb 19935010,09517.90$895
Jan 19935010,98816.93$847

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 2026 — as filed, then multipliedworked
Condensate             0 bbl  × $ 63.50 =         $0
Gas                  193 Mcf  × $  3.75 =       $724

────────────────────────────────────────────────────
Month total                                     $724

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/G/74544 is the state's own key, not one this site invented.