SAUZ RANCH MULATOS PASTURE

Operated by CHESTNUT EXPLOR. AND PROD., INC. (P-5 147847) in the WILLAMAR (GRABEN A-1 SD., N.) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 4287District 04Field 97491083NGPA filingOilCasinghead gasSaveExport
Value, all time
$6.5 M
Jan 1993 – May 2026
Value, last 12 filed months
$0
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 3 leases and 11 wells, and the rule below applies to all of them.

Discovered
1940-11-14
as the register files it
Field class
Oil and gas
the register's own label
Between wells
933 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 1985-02-22.

The Commission's schedule remark for this field reads: TRANSFERRED FROM WILLAMAR /GRABEN, NORTH/ FIELD 7-1-58

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
NGPA3none

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
OilDisposition169,661 bbl$6,382,928
Casinghead gasProduction39,794 Mcf$137,814
Total$6,520,743

7,830 Mcf of this lease's gas, across 34 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 (9)

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 26.4453, -97.5586. A lease has no coordinate of its own — that point is the mean of its wells, and they span 1.1 miles.

26.44503, -97.55875 · 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
88.9%
8 of 9 wells
With a plug date
88.9%
8 of 9 wells
Median depth
8,000 ft
9 wells filed one
Completion to plug
9.2 years
median over 6 wells

What the state filed about each well

On the RRC proration schedule
888.9%
A plug date is filed
888.9%
BothOn the schedule and plugged. Neither fact cancels the other.
888.9%
NeitherNo plug date, and not on the schedule.
111.1%

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

Total depth in feet, 9 of 9 wells. Median 8,000 ft, with the middle half between 7,950 and 8,020 ft; the shallowest is 7,917 ft and the deepest 8,080 ft. The median is published rather than the mean, because a single mis-keyed depth moves a mean and cannot move a median.

When they were last completed

Last completion by decade, 7 of 9 wells, Jan 1964 – Dec 1991. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Jan 1964 – Dec 1991
7 of 9 wells; 2 filed none
Plug dates filed
Oct 1979 – Dec 2022
8 of 9 wells; 1 filed none

Last completion to plug: a median of 9.2 years across the 6 wells that filed both dates, with the middle half between 4.5 years and 15.1 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

9 wells

42-48900167727,917 ftApr 1992Yes
42-48900174427,950 ftJan 1992Yes
42-489306291628,000 ftDec 1991Aug 1992Yes
42-489308982108,080 ftApr 1986Aug 1991Yes
42-489308962088,015 ftApr 1986Jun 1990Yes
42-489308731948,000 ftSep 1985
42-489308692138,020 ftAug 1985Dec 2022Yes
42-48900173557,946 ftMar 1979Feb 1992Yes
42-489005601488,030 ftJan 1964Oct 1979Yes

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 20260063.503.75$0
Jan 20260059.138.00$0
Dec 20250056.664.41$0
Nov 20250058.593.93$0
Oct 20250059.383.30$0
Sep 20250062.743.08$0
Aug 20250063.933.01$0
Jul 20250066.743.32$0
Jun 20250066.483.13$0
May 20250060.553.23$0
Apr 20250062.363.54$0
Mar 20250067.704.27$0
Feb 20250070.884.34$0
Jan 20250074.324.28$0
Dec 20240068.993.12$0
Nov 20240069.052.20$0
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 20240078.812.20$0
Apr 20240084.451.66$0
Mar 20240080.301.55$0
Feb 20240076.091.78$0
Jan 20240073.023.30$0
Dec 20230071.262.61$0
Nov 20230077.892.81$0
Oct 20230085.443.09$0
Sep 20230089.042.74$0
Aug 20230080.522.67$0
Jul 20230074.852.64$0
Jun 20230068.962.26$0
May 20230070.622.23$0
Apr 20230078.122.24$0
Mar 20230072.852.39$0
Feb 20230075.112.47$0
Jan 20230076.533.39$0
Dec 20220076.415.73$0
Nov 20220085.005.65$0
Oct 20220087.185.86$0
Sep 20220084.888.16$0
Aug 20220094.529.13$0
Jul 202200101.587.54$0
Jun 202200115.097.98$0
May 202200109.378.43$0
Apr 202200104.226.84$0
Mar 202200108.885.08$0
Feb 20220091.054.86$0
Jan 20220081.844.54$0
Dec 20210071.323.90$0
Nov 20210077.435.24$0
Oct 20210079.795.71$0
Sep 20210069.865.35$0
Aug 20210066.024.22$0
Jul 20210070.783.98$0
Jun 20210069.493.38$0
May 20210063.483.02$0
Apr 20210060.362.76$0
Mar 20210061.302.72$0
Feb 20210057.805.55$0
Jan 20210050.412.81$0
Dec 20200044.642.68$0
Nov 20200038.772.71$0
Oct 20200036.972.48$0
Sep 20200037.091.99$0
Aug 20200039.982.39$0
Jul 20200038.371.83$0
Jun 20200034.901.69$0
May 20200016.921.81$0
Apr 20200014.751.80$0
Mar 20200030.341.86$0
Feb 20200049.881.98$0
Jan 20200057.252.09$0
Dec 20190059.012.30$0
Nov 20190055.302.75$0
Oct 20190053.472.42$0
Sep 20190055.052.66$0
Aug 20190053.112.30$0
Jul 20190056.272.46$0
Jun 20190052.782.49$0
May 20190058.482.74$0
Apr 20190062.632.75$0
Mar 20190056.803.06$0
Feb 20190050.852.79$0
Jan 20190046.033.23$0
Dec 20180046.594.19$0
Nov 20180052.934.24$0
Oct 20180061.443.40$0
Sep 20180059.543.11$0
Aug 20180059.403.07$0
Jul 20180065.142.93$0
Jun 20180060.183.08$0
May 20180065.382.90$0
Apr 20180063.842.90$0
Mar 20180061.222.79$0
Feb 20180061.782.77$0
Jan 20180062.874.01$0
Dec 20170057.272.92$0
Nov 20170055.423.12$0
Oct 20170049.292.98$0
Sep 20170047.523.09$0
Aug 20170045.373.00$0
Jul 20170043.873.09$0
Jun 20170042.493.09$0
May 2017455045.373.26$20,643
Apr 2017355047.933.21$17,015
Mar 2017460046.772.98$21,514
Feb 2017386050.452.95$19,474
Jan 2017459049.413.42$22,679
Dec 2016419048.763.72$20,430
Nov 2016375042.492.64$15,934
Oct 2016319046.193.09$14,735
Sep 2016107041.553.10$4,446
Aug 2016300041.442.92$12,432
Jul 2016234041.622.92$9,739
Jun 2016277045.352.69$12,562
May 2016299042.521.99$12,713
Apr 2016432036.561.99$15,794
Mar 2016526033.011.79$17,363
Feb 2016133026.472.06$3,521
Jan 2016467027.352.36$12,772
Dec 2015415032.362.00$13,429
Nov 2015464038.792.17$17,999
Oct 2015259043.552.43$11,279
Sep 2015318042.992.76$13,671
Aug 2015290040.162.87$11,646
Jul 2015278048.152.95$13,386
Jun 2015292056.152.88$16,396
May 2015312055.212.96$17,226
Apr 2015301049.822.71$14,996
Mar 2015346042.892.93$14,840
Feb 2015297044.662.98$13,264
Jan 2015325043.433.10$14,115
Dec 2014318054.693.59$17,391
Nov 2014314070.464.25$22,124
Oct 2014356078.303.90$27,875
Sep 2014398086.164.05$34,292
Aug 2014408089.394.04$36,471
Jul 201440613196.564.18$39,751
Jun 201440324498.164.74$40,714
May 20144088994.734.73$39,071
Apr 20143692095.944.81$35,498
Mar 201437615495.895.06$36,833
Feb 201434915597.406.19$34,952
Jan 201421717090.404.86$20,443
Dec 201326721491.824.35$25,448
Nov 201322321288.853.74$20,606
Oct 201319420797.423.78$19,682
Sep 2013160270104.113.72$17,661
Aug 2013152155104.253.52$16,392
Jul 2013183110102.523.72$19,170
Jun 201314444494.403.93$15,340
May 201324728894.834.15$24,618
Apr 201330823593.964.28$29,946
Mar 201339523693.623.91$37,903
Feb 201334612691.233.42$31,996
Jan 201324516891.603.42$23,017
Dec 201217216186.773.42$15,475
Nov 20121509486.953.62$13,383
Oct 20121579389.383.40$14,349
Sep 20121414594.672.92$13,480
Aug 20121733792.662.91$16,138
Jul 20122353585.133.02$20,111
Jun 20121633879.822.52$13,106
May 20122402691.612.49$22,051
Apr 201232127101.652.00$32,684
Mar 201230764105.052.22$32,393
Feb 201232864101.102.57$33,325
Jan 20123373598.092.73$33,152
Dec 20112771296.873.24$26,872
Nov 201132610595.723.31$31,552
Oct 201155421884.983.65$47,874
Sep 20115174783.623.99$43,419
Aug 201148613583.404.15$41,093
Jul 20113133094.144.52$29,601
Jun 201146025992.904.64$43,936
May 201143317298.134.40$43,248
Apr 2011521154105.964.33$55,872
Mar 201149716896.364.06$48,573
Feb 20113414785.644.18$29,400
Jan 20114044386.504.59$35,143
Dec 20105447285.734.35$46,950
Nov 20103816380.843.80$31,039
Oct 20106739978.103.51$52,909
Sep 201049115472.633.98$36,274
Aug 20105857873.684.42$43,448
Jul 20103616972.554.74$26,517
Jun 20104668470.364.91$33,200
May 20104899971.124.24$35,197
Apr 201053514081.694.12$44,281
Mar 201036219878.394.39$29,246
Feb 201053817073.585.44$40,511
Jan 201058117574.365.96$44,247
Dec 20096459871.445.48$46,616
Nov 200944812974.593.75$33,900
Oct 20094825372.544.11$35,182
Sep 20093604665.543.06$23,735
Aug 20095205267.423.22$35,226
Jul 20095257761.133.46$32,360
Jun 20095719566.163.90$38,147
May 200945021054.743.93$25,457
Apr 200934717846.773.59$16,868
Mar 200954923542.144.06$24,089
Feb 200928211532.814.63$9,785
Jan 200959516235.865.37$22,207
Dec 200869023237.105.98$26,986
Nov 200844513855.496.86$25,640
Oct 200852923075.246.92$41,394
Sep 2008646268101.767.88$67,848
Aug 2008299128114.228.48$35,238
Jul 20084730131.0811.39$62,001
Jun 200838877131.3313.03$51,960
May 2008479113123.1711.57$60,306
Apr 2008451160110.3110.45$51,423
Mar 2008433126101.909.66$45,340
Feb 200852218492.538.77$49,914
Jan 200861621190.388.21$57,405
Dec 200752021988.337.30$47,531
Nov 200744515891.677.29$41,945
Oct 200758219282.856.92$49,548
Sep 20072517575.846.24$19,504
Aug 200754421769.066.39$38,955
Jul 20075269470.906.39$37,894
Jun 20075034162.007.55$31,495
May 2007464058.747.85$27,255
Apr 2007215059.617.81$12,816
Mar 20071774456.927.30$10,396
Feb 2007134055.108.22$7,383
Jan 2007367050.306.73$18,460
Dec 2006329056.656.92$18,638
Nov 2006340054.207.62$18,428
Oct 2006534054.906.01$29,317
Sep 2006504060.085.04$30,280
Aug 20064207868.717.34$29,431
Jul 20064826069.376.34$33,817
Jun 2006397066.286.38$26,313
May 200631414266.016.42$21,639
Apr 200631119264.397.36$21,439
Mar 200640779056.707.08$28,672
Feb 200644532757.597.75$28,162
Jan 20063918060.598.93$24,405
Dec 200542911354.9413.42$25,085
Nov 20054057754.6910.59$22,965
Oct 20054516958.3413.80$27,263
Sep 20053805061.4512.08$23,955
Aug 200548114361.519.80$30,987
Jul 200547011255.697.84$27,053
Jun 20055809952.337.38$31,082
May 20055243345.226.65$23,915
Apr 20054243149.207.36$21,089
Mar 20054207650.377.15$21,699
Feb 20055524945.226.31$25,271
Jan 200566115243.166.32$29,490
Dec 20045389339.866.75$22,073
Nov 200454716845.286.33$25,832
Oct 200454514449.706.52$28,025
Sep 200463519143.245.28$28,467
Aug 200472312242.375.55$31,311
Jul 20044167138.286.08$16,356
Jun 20045803236.106.43$21,144
May 20046975037.486.49$26,448
Apr 200454914834.475.86$19,791
Mar 200460014734.365.53$21,429
Feb 200467310132.455.51$22,395
Jan 20049083632.036.30$29,310
Dec 200344814230.266.30$14,451
Nov 20036906028.804.60$20,148
Oct 200365915828.174.76$19,316
Sep 200350828526.314.75$14,719
Aug 2003607029.765.13$18,064
Jul 2003419029.415.17$12,323
Jun 2003517028.565.98$14,766
May 2003791026.595.97$21,033
Apr 2003778026.675.41$20,749
Mar 2003792031.146.10$24,663
Feb 200388232933.487.93$32,137
Jan 200373128530.315.58$23,747
Dec 200264211726.914.85$17,844
Nov 200263014724.664.14$16,144
Oct 200265616426.464.23$18,051
Sep 20024455027.443.64$12,393
Aug 200259626325.963.16$16,304
Jul 200283226624.583.06$21,265
Jun 200259420023.733.34$14,763
May 200280218024.663.58$20,422
Apr 200261318623.653.51$15,151
Mar 200285418622.003.10$19,365
Feb 200268622218.222.38$13,026
Jan 200291918617.172.38$16,221
Dec 200183437216.932.36$14,999
Nov 200188318718.072.41$16,406
Oct 200134019219.782.53$7,211
Sep 20013043224.262.25$7,447
Aug 200159927524.873.05$15,737
Jul 200154015123.933.20$13,405
Jun 200148213624.563.82$12,358
May 200171314725.524.31$18,829
Apr 200167114524.685.34$17,334
Mar 20015579724.545.38$14,190
Feb 200139027.755.77$1,082
Jan 2001109027.478.40$2,994
Dec 200086512526.889.12$24,392
Nov 20007518932.215.66$24,693
Oct 200087611431.235.15$27,944
Sep 20001,00012331.875.19$32,508
Aug 200099113529.644.54$29,986
Jul 200064318928.534.09$19,118
Jun 200091511329.304.40$27,306
May 200079820927.263.68$22,523
Apr 200079812724.513.12$19,955
Mar 200078113628.422.86$22,585
Feb 200076412227.622.73$21,434
Jan 200065216925.272.48$16,895
Dec 199984619224.282.42$21,006
Nov 19997986723.192.43$18,669
Oct 199980810420.982.80$17,243
Sep 199977118121.752.62$17,243
Aug 199954820919.262.88$11,155
Jul 199970023317.892.37$13,076
Jun 19991,16310815.942.36$18,793
May 19991,08719415.792.32$17,614
Apr 199979413215.102.21$12,281
Mar 19991,21612212.471.84$15,388
Feb 19998911489.981.82$9,161
Jan 19997639710.381.90$8,104
Dec 19981,1712559.201.77$11,225
Nov 19981,17428410.892.19$13,406
Oct 19981,3959512.421.97$17,513
Sep 19981,3218012.592.08$16,798
Aug 19981,24214511.301.91$14,311
Jul 19981,26613711.742.24$15,169
Jun 199895426411.242.24$11,314
May 19981,16924912.622.21$15,302
Apr 199882722313.042.51$11,343
Mar 199881718412.802.31$10,883
Feb 199890026813.952.30$13,171
Jan 199885329214.702.15$13,168
Dec 199799133816.322.41$16,988
Nov 199794025518.193.09$17,886
Oct 19971,00154119.253.15$20,973
Sep 19971,39632617.742.95$25,728
Aug 19971,49740117.862.55$27,761
Jul 19971,73250417.582.25$31,581
Jun 19971,51551417.242.26$27,279
May 19971,07946518.972.31$21,542
Apr 19971,95071217.882.08$36,349
Mar 19971,54476718.951.94$30,746
Feb 19971,12521320.492.21$23,521
Jan 19971,08638323.483.54$26,855
Dec 1996599023.32$13,969
Nov 1996516021.97$11,337
Oct 1996508023.31$11,841
Sep 1996351022.22$7,799
Aug 1996351020.26$7,111
Jul 1996336019.55$6,569
Jun 1996491018.73$9,196
May 1996309019.43$6,004
Apr 1996332021.51$7,141
Mar 1996357019.38$6,919
Feb 1996301016.98$5,111
Jan 1996306017.07$5,223
Dec 199564017.19$1,100
Nov 1995267016.00$4,272
Oct 199579314115.43$12,236
Sep 199527910016.18$4,514
Aug 199550610015.92$8,056
Jul 199540814215.24$6,218
Jun 199561411216.41$10,076
May 199570711417.56$12,415
Apr 199547813717.73$8,475
Mar 199557815616.44$9,502
Feb 199549313816.58$8,174
Jan 199549116915.92$7,817
Dec 199464616115.03$9,709
Nov 199457816415.90$9,190
Oct 199465917415.58$10,267
Sep 1994571515.29$872
Aug 199490326616.13$14,565
Jul 199491141117.56$15,997
Jun 199486834417.09$14,834
May 19941,07035815.88$16,992
Apr 199489828314.14$12,698
Mar 19941,87530412.46$23,363
Feb 19941,37127312.50$17,138
Jan 19941,41459612.66$17,901
Dec 19931,55059312.33$19,112
Nov 19931,54759214.49$22,416
Oct 199391328115.85$14,471
Sep 19935716215.03$8,582
Aug 19937456515.66$11,667
Jul 199374810015.46$11,564
Jun 19933202116.79$5,373
May 19931,09622617.68$19,377
Apr 19931,26537918.05$22,833
Mar 19931,22748418.14$22,258
Feb 19931,01836517.90$18,222
Jan 1993170416.93$2,878

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 2017 — as filed, then multipliedworked
Oil                  455 bbl  × $ 45.37 =    $20,643
Casinghead gas         0 Mcf  × $  3.26 =         $0

────────────────────────────────────────────────────
Month total                                  $20,643

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/4287 is the state's own key, not one this site invented.