TARZAN "A" CALLAWAY

Operated by DIAMONDBACK E&P LLC (P-5 217012) in the SPRABERRY (TREND AREA) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 35924District 08Field 85280300OilCasinghead gasSaveExport
Value, all time
$2.7 M
Nov 1998 – Jan 2026
Value, last 12 filed months
$0
at the published price for each month
Months reported
327
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 16,587 leases and 43,997 wells, and the rule below applies to all of them.

Discovered
1952-12-22
as the register files it
Field class
Oil and gas
the register's own label
Between wells
0 ft
minimum
From a lease line
330 ft
minimum

A drilling unit in this field needs at least 80 acres. The field rule took effect on 2018-02-13.

The Commission's schedule remark for this field reads: SPRABERRY (TREND AREA) FIELD EFFECTIVE 10/1/2019.

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
OilDisposition43,632 bbl$2,091,776
Casinghead gasProduction126,496 Mcf$578,244
Total$2,670,020

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 32.3075, -101.8708. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.0 miles.

32.30747, -101.87079 · 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%
1 of 1 wells
With a plug date
100.0%
1 of 1 wells
Median depth
9,925 ft
1 wells filed one
Completion to plug
27.2 years
median over 1 well

What the state filed about each well

On the RRC proration schedule
1100.0%
A plug date is filed
1100.0%
BothOn the schedule and plugged. Neither fact cancels the other.
1100.0%
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

The one well that filed a depth was drilled to 9,925 ft.

Completions filed
Nov 1998
1 of 1 wells
Plug dates filed
Jan 2026
1 of 1 wells

Last completion to plug: a median of 27.2 years across the 1 well that filed both dates, with the middle half between 27.2 years and 27.2 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

1 well

42-3173418734079,925 ftNov 1998Jan 2026Yes

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 (327)

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

327 months

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 202326085.443.09$2,221
Sep 20232089.042.74$178
Aug 2023172080.522.67$13,849
Jul 20231074.852.64$75
Jun 20232068.962.26$138
May 20239070.622.23$636
Apr 202341278.122.24$339
Mar 20231722272.852.39$12,583
Feb 202321275.112.47$180
Jan 20231876.533.39$104
Dec 202212576.415.73$946
Nov 2022010485.005.65$587
Oct 2022012687.185.86$739
Sep 2022012784.888.16$1,037
Aug 2022018594.529.13$1,689
Jul 20220146101.587.54$1,101
Jun 2022163200115.097.98$20,355
May 20220229109.378.43$1,931
Apr 20220167104.226.84$1,142
Mar 202200108.885.08$0
Feb 20222319391.054.86$3,032
Jan 20225081.844.54$409
Dec 2021168071.323.90$11,982
Nov 202117077.435.24$1,316
Oct 20211079.795.71$80
Sep 20211069.865.35$70
Aug 20210066.024.22$0
Jul 20210070.783.98$0
Jun 20211069.493.38$69
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 20201044.642.68$45
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 202009016.921.81$163
Apr 2020149014.751.80$369
Mar 2020012730.341.86$236
Feb 202004649.881.98$91
Jan 202005157.252.09$107
Dec 201908259.012.30$189
Nov 201909455.302.75$259
Oct 201901853.472.42$44
Sep 201905255.052.66$138
Aug 201916830653.112.30$9,628
Jul 2019195956.272.46$2,415
Jun 2019484452.782.49$2,314
May 201916062158.482.74$11,059
Apr 2019230462.632.75$961
Mar 2019053556.803.06$1,638
Feb 201917968650.852.79$11,018
Jan 2019488046.033.23$3,025
Dec 2018078946.594.19$3,302
Nov 201817025652.934.24$10,083
Oct 2018057161.443.40$1,940
Sep 2018030259.543.11$939
Aug 201816914759.403.07$10,489
Jul 2018036565.142.93$1,070
Jun 201816824860.183.08$10,873
May 2018033865.382.90$980
Apr 201817812263.842.90$11,717
Mar 201809461.222.79$262
Feb 20181808461.782.77$11,353
Jan 201807562.874.01$301
Dec 20171819457.272.92$10,640
Nov 201719055.423.12$336
Oct 20171789449.292.98$9,054
Sep 201719047.523.09$325
Aug 2017029145.373.00$874
Jul 2017031443.873.09$969
Jun 2017032442.493.09$1,000
May 201716936445.373.26$8,855
Apr 2017031047.933.21$996
Mar 2017033946.772.98$1,011
Feb 2017334050.452.95$1,155
Jan 2017035849.413.42$1,224
Dec 2016033648.763.72$1,251
Nov 2016030242.492.64$799
Oct 2016031246.193.09$964
Sep 2016033441.553.10$1,036
Aug 2016037241.442.92$1,088
Jul 201616934641.622.92$8,046
Jun 2016032545.352.69$873
May 2016030642.521.99$609
Apr 2016029936.561.99$595
Mar 2016247333.011.79$915
Feb 2016157626.472.06$1,215
Jan 201616957427.352.36$5,979
Dec 2015041932.362.00$839
Nov 201518856838.792.17$8,524
Oct 201518458943.552.43$9,442
Sep 2015061542.992.76$1,696
Aug 2015063840.162.87$1,833
Jul 201518358248.152.95$10,525
Jun 2015065156.152.88$1,877
May 201518555555.212.96$11,854
Apr 2015047249.822.71$1,278
Mar 2015029842.892.93$875
Feb 2015221044.662.98$9,870
Jan 20150843.433.10$25
Dec 20140754.693.59$25
Nov 201403970.464.25$166
Oct 201404778.303.90$183
Sep 201404486.164.05$178
Aug 201409889.394.04$395
Jul 201407096.564.18$293
Jun 201419428498.164.74$20,388
May 2014036194.734.73$1,706
Apr 2014035395.944.81$1,698
Mar 2014039995.895.06$2,018
Feb 201417243497.406.19$19,440
Jan 2014050990.404.86$2,474
Dec 201317246191.824.35$17,800
Nov 2013054388.853.74$2,030
Oct 201317161397.423.78$18,976
Sep 2013175609104.113.72$20,483
Aug 20130648104.253.52$2,283
Jul 2013165638102.523.72$19,288
Jun 2013061994.403.93$2,435
May 201317054294.834.15$18,370
Apr 201316752293.964.28$17,927
Mar 20130093.623.91$0
Feb 2013341091.233.42$31,109
Jan 20131091.603.42$92
Dec 20120086.773.42$0
Nov 2012333086.953.62$28,954
Oct 2012172089.383.40$15,373
Sep 2012173094.672.92$16,378
Aug 20120092.662.91$0
Jul 201231373285.133.02$28,857
Jun 2012070479.822.52$1,773
May 2012075891.612.49$1,886
Apr 2012341752101.652.00$36,164
Mar 20120765105.052.22$1,700
Feb 2012338701101.102.57$35,974
Jan 201217077598.092.73$18,794
Dec 2011276796.873.24$2,679
Nov 201117171995.723.31$18,749
Oct 201117075584.983.65$17,201
Sep 201134675883.623.99$31,954
Aug 2011079383.404.15$3,290
Jul 201116781394.144.52$19,394
Jun 201118079292.904.64$20,397
May 2011081698.134.40$3,594
Apr 2011171718105.964.33$21,230
Mar 201134578896.364.06$36,441
Feb 201117170485.644.18$17,587
Jan 201116976886.504.59$18,143
Dec 201017184185.734.35$18,316
Nov 2010060480.843.80$2,292
Oct 2010061978.103.51$2,172
Sep 201034175372.633.98$27,763
Aug 2010071973.684.42$3,178
Jul 201018160272.554.74$15,983
Jun 201035372770.364.91$28,407
May 2010065371.124.24$2,766
Apr 201034471081.694.12$31,028
Mar 2010075678.394.39$3,318
Feb 201018667873.585.44$17,376
Jan 201017374074.365.96$17,278
Dec 200917169371.445.48$16,016
Nov 2009071474.593.75$2,679
Oct 200917173072.544.11$15,405
Sep 200917174865.543.06$13,500
Aug 200916776767.423.22$13,728
Jul 200916855761.133.46$12,200
Jun 200916971066.163.90$13,946
May 200917271954.743.93$12,238
Apr 200917068746.773.59$10,416
Mar 200934369142.144.06$17,259
Feb 2009063032.814.63$2,919
Jan 200917270835.865.37$9,971
Dec 200817268737.105.98$10,488
Nov 200817461255.496.86$13,854
Oct 200816627275.246.92$14,373
Sep 2008170278101.767.88$19,489
Aug 2008170786114.228.48$26,085
Jul 2008344877131.0811.39$55,080
Jun 20080771131.3313.03$10,048
May 20080286123.1711.57$3,310
Apr 2008174625110.3110.45$25,728
Mar 20080761101.909.66$7,354
Feb 200817170792.538.77$22,023
Jan 200817573290.388.21$21,823
Dec 200717466788.337.30$20,240
Nov 200715570291.677.29$19,328
Oct 200733469282.856.92$32,462
Sep 200734165075.846.24$29,920
Aug 2007061769.066.39$3,941
Jul 200735866670.906.39$29,637
Jun 2007051562.007.55$3,887
May 200715346258.747.85$12,612
Apr 200734651159.617.81$24,614
Mar 200717761156.927.30$14,536
Feb 200717857655.108.22$14,540
Jan 200717658350.306.73$12,775
Dec 200618263156.656.92$14,676
Nov 200617263454.207.62$14,152
Oct 200617568254.906.01$13,709
Sep 200617461060.085.04$13,527
Aug 200617268268.717.34$16,824
Jul 200617960869.376.34$16,274
Jun 200634552566.286.38$26,218
May 200617550966.016.42$14,822
Apr 200634850964.397.36$26,154
Mar 200617549156.707.08$13,400
Feb 200617441157.597.75$13,206
Jan 200617835460.598.93$13,947
Dec 200517346854.9413.42$15,783
Nov 200518046154.6910.59$14,725
Oct 200532647158.3413.80$25,517
Sep 200517545461.4512.08$16,238
Aug 200534651861.519.80$26,357
Jul 200518147355.697.84$13,790
Jun 200525251152.337.38$16,959
May 200518347645.226.65$11,441
Apr 200517239949.207.36$11,399
Mar 200534091850.377.15$23,694
Feb 200517638045.226.31$10,357
Jan 200517340843.166.32$10,046
Dec 200417342639.866.75$9,772
Nov 200434933345.286.33$17,911
Oct 200417344849.706.52$11,517
Sep 200416919043.245.28$8,312
Aug 200417237842.375.55$9,386
Jul 200433938438.286.08$15,313
Jun 200417238436.106.43$8,679
May 200417538637.486.49$9,066
Apr 200417632434.475.86$7,965
Mar 200433929934.365.53$13,302
Feb 20049622132.455.51$4,333
Jan 200425045732.036.30$10,886
Dec 200317046530.266.30$8,074
Nov 200324544328.804.60$9,092
Oct 200317447028.174.76$7,139
Sep 200325342126.314.75$8,656
Aug 200316641729.765.13$7,079
Jul 200316545129.415.17$7,185
Jun 200325031128.565.98$9,001
May 200325032226.595.97$8,571
Apr 2003269026.675.41$7,174
Mar 200329829731.146.10$11,090
Feb 200317427333.487.93$7,989
Jan 200324831430.315.58$9,270
Dec 200225431526.914.85$8,364
Nov 200216730424.664.14$5,376
Oct 2002247026.464.23$6,536
Sep 200225231127.443.64$8,045
Aug 200247732325.963.16$13,405
Jul 200218228624.583.06$5,349
Jun 200226331423.733.34$7,289
May 200226432524.663.58$7,675
Apr 200226231523.653.51$7,303
Mar 200217531222.003.10$4,818
Feb 200226927918.222.38$5,564
Jan 200234539217.172.38$6,855
Dec 200125637216.932.36$5,214
Nov 200116439818.072.41$3,921
Oct 200110829919.782.53$2,892
Sep 20011322324.262.25$817
Aug 2001617924.873.05$1,758
Jul 20015413923.933.20$1,737
Jun 20013922224.563.82$1,807
May 200116010625.524.31$4,540
Apr 2001011924.685.34$635
Mar 200111328924.545.38$4,327
Feb 200118532627.755.77$7,014
Jan 200118019327.478.40$6,566
Dec 20000026.889.12$0
Nov 200025032.215.66$805
Oct 200026018331.235.15$9,061
Sep 200015368031.875.19$8,403
Aug 200030172129.644.54$12,196
Jul 200036875828.534.09$13,599
Jun 200031965329.304.40$12,218
May 200039469627.263.68$13,302
Apr 200022867924.513.12$7,704
Mar 200029872228.422.86$10,534
Feb 200025664527.622.73$8,829
Jan 200041173025.272.48$12,197
Dec 199928270724.282.42$8,561
Nov 199943478323.192.43$11,970
Oct 199935090820.982.80$9,889
Sep 199936286921.752.62$10,149
Aug 19994121,08619.262.88$11,058
Jul 19995681,30617.892.37$13,260
Jun 19995271,20815.942.36$11,254
May 19994151,29315.792.32$9,554
Apr 19996571,15615.102.21$12,473
Mar 19996951,21112.471.84$10,893
Feb 19997801,4529.981.82$10,424
Jan 19999951,54210.381.90$13,258
Dec 19981,4631,4939.201.77$16,107
Nov 199861248710.892.19$7,729

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 2023 — as filed, then multipliedworked
Oil                   26 bbl  × $ 85.44 =     $2,221
Casinghead gas         0 Mcf  × $  3.09 =         $0

────────────────────────────────────────────────────
Month total                                   $2,221

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/35924 is the state's own key, not one this site invented.