HALFMANN 4

Operated by PIONEER NATURAL RES. USA, INC. (P-5 665748) in the DEWEY LAKE, S. (STRAWN) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 28427District 08Field 24489380NGPA filingOilCasinghead gasSaveExport
Value, all time
$3.3 M
Jan 1993 – Dec 2023
Value, last 12 filed months
$0
at the published price for each month
Months reported
372
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 49 leases and 56 wells, and the rule below applies to all of them.

Discovered
1983-06-10
as the register files it
Field class
Oil and gas
the register's own label
Between wells
1,320 ft
minimum
From a lease line
660 ft
minimum

A drilling unit in this field needs at least 80 acres. The field rule took effect on 1985-09-16.

The Commission's schedule remark for this field reads: ALLOCATION FORMULA EFFECTIVE 09/01/1999.

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
NGPA2none

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
OilDisposition40,683 bbl$2,107,534
Casinghead gasProduction371,350 Mcf$1,190,738
Total$3,298,272

110,293 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 31.8359, -101.6287. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.6 miles.

31.83585, -101.62869 · 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
10,207 ft
2 wells filed one
Completion to plug
34.8 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 10,185 and 10,228 ft, median 10,207 ft, over the 2 wells that filed a depth.

Completions filed
Aug 1983 – Jan 1984
2 of 2 wells
Plug dates filed
Aug 2014 – Jul 2022
2 of 2 wells

Last completion to plug: a median of 34.8 years across the 2 wells that filed both dates, with the middle half between 32.7 years and 36.8 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

2 wells

42-17331514210,228 ftJan 1984Aug 2014Yes
42-17331435110,185 ftAug 1983Jul 2022Yes

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 (372)

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

372 months

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 202104361.302.72$117
Feb 202119323657.805.55$12,465
Jan 2021016050.412.81$450
Dec 2020013444.642.68$359
Nov 202003938.772.71$106
Oct 20203236.972.48$116
Sep 20200037.091.99$0
Aug 20200039.982.39$0
Jul 2020033538.371.83$611
Jun 2020037734.901.69$637
May 202002816.921.81$51
Apr 202005214.751.80$94
Mar 2020031630.341.86$587
Feb 2020030049.881.98$594
Jan 2020036157.252.09$756
Dec 201918531659.012.30$11,645
Nov 2019033055.302.75$908
Oct 2019017253.472.42$416
Sep 2019034255.052.66$909
Aug 2019033653.112.30$774
Jul 2019039156.272.46$962
Jun 2019041152.782.49$1,024
May 2019042558.482.74$1,165
Apr 2019041562.632.75$1,142
Mar 2019043056.803.06$1,317
Feb 201917436550.852.79$9,867
Jan 2019039646.033.23$1,278
Dec 2018021346.594.19$892
Nov 20180052.934.24$0
Oct 2018017361.443.40$588
Sep 2018057759.543.11$1,793
Aug 2018050459.403.07$1,546
Jul 2018053965.142.93$1,580
Jun 2018057760.183.08$1,775
May 201819055765.382.90$14,038
Apr 2018062563.842.90$1,813
Mar 2018062561.222.79$1,742
Feb 2018051861.782.77$1,433
Jan 2018013262.874.01$529
Dec 201719035657.272.92$11,921
Nov 2017043755.423.12$1,363
Oct 2017043149.292.98$1,286
Sep 2017048847.523.09$1,507
Aug 2017026645.373.00$799
Jul 2017032743.873.09$1,010
Jun 2017183042.493.09$7,776
May 2017130045.373.26$5,898
Apr 201704847.933.21$154
Mar 201708246.772.98$245
Feb 2017021550.452.95$635
Jan 2017032549.413.42$1,111
Dec 20161826448.763.72$9,113
Nov 2016044242.492.64$1,169
Oct 2016039446.193.09$1,218
Sep 201617427541.553.10$8,082
Aug 201603441.442.92$99
Jul 201612041.622.92$499
Jun 20160045.352.69$0
May 20160042.521.99$0
Apr 201604236.561.99$84
Mar 201620676233.011.79$8,167
Feb 201617567626.472.06$6,027
Jan 2016071127.352.36$1,681
Dec 201516773032.362.00$6,865
Nov 201517573338.792.17$8,377
Oct 201517872643.552.43$9,514
Sep 2015071942.992.76$1,983
Aug 201518353040.162.87$8,872
Jul 201518260548.152.95$10,545
Jun 201516853956.152.88$10,987
May 201520955055.212.96$13,164
Apr 201517942449.822.71$10,065
Mar 201532849142.892.93$15,509
Feb 2015022644.662.98$673
Jan 201533434143.433.10$15,563
Dec 2014181054.693.59$9,899
Nov 2014037070.464.25$1,573
Oct 201434149978.303.90$28,647
Sep 201418450486.164.05$17,892
Aug 201417853789.394.04$18,078
Jul 201418154696.564.18$19,759
Jun 201418152998.164.74$20,273
May 201417454094.734.73$19,035
Apr 201426247395.944.81$27,411
Mar 201417749795.895.06$19,486
Feb 2014046397.406.19$2,867
Jan 201437448190.404.86$36,148
Dec 201319341291.824.35$19,515
Nov 201317652788.853.74$17,608
Oct 201333251297.423.78$34,278
Sep 2013189527104.113.72$21,636
Aug 2013183554104.253.52$21,029
Jul 2013181555102.523.72$20,619
Jun 201318952594.403.93$19,907
May 201335754894.834.15$36,128
Apr 201319048993.964.28$19,947
Mar 201318139893.623.91$18,503
Feb 201335342891.233.42$33,668
Jan 201317842991.603.42$17,772
Dec 201235841586.773.42$32,483
Nov 201217941986.953.62$17,083
Oct 201218347889.383.40$17,982
Sep 201218850894.672.92$19,281
Aug 201231761392.662.91$31,156
Jul 201218765185.133.02$17,886
Jun 201218764879.822.52$16,559
May 2012499091.612.49$45,713
Apr 2012173694101.652.00$18,971
Mar 2012175176105.052.22$18,775
Feb 2012171675101.102.57$19,023
Jan 201252270198.092.73$53,120
Dec 2011074396.873.24$2,407
Nov 201134075995.723.31$35,058
Oct 201134378584.983.65$32,012
Sep 201134477283.623.99$31,842
Aug 201117472683.404.15$17,524
Jul 201134436094.144.52$34,010
Jun 201134630992.904.64$33,577
May 201147755798.134.40$49,261
Apr 2011172557105.964.33$20,639
Mar 2011087796.364.06$3,558
Feb 201117329085.644.18$16,028
Jan 201119173086.504.59$19,871
Dec 201036772385.734.35$34,606
Nov 201017672380.843.80$16,972
Oct 201035175978.103.51$30,076
Sep 201017876672.633.98$15,976
Aug 201036286073.684.42$30,473
Jul 201017185972.554.74$16,475
Jun 201033984170.364.91$27,982
May 201035592671.124.24$29,169
Apr 201017976881.694.12$17,789
Mar 20103261,13778.394.39$30,545
Feb 20101801,32073.585.44$20,428
Jan 20105442,29274.365.96$54,122
Dec 200918297471.445.48$18,343
Nov 20095441,06574.593.75$44,572
Oct 200938872.544.11$579
Sep 200917565.543.06$295
Aug 200906467.423.22$206
Jul 200907061.133.46$243
Jun 200907666.163.90$296
May 200919654.743.93$432
Apr 200907446.773.59$265
Mar 200909342.144.06$377
Feb 200908632.814.63$398
Jan 2009038635.865.37$2,073
Dec 2008076037.105.98$4,543
Nov 200801,02355.496.86$7,018
Oct 200801,14875.246.92$7,946
Sep 20080584101.767.88$4,600
Aug 20082451,018114.228.48$36,620
Jul 200801,105131.0811.39$12,585
Jun 20081791,094131.3313.03$37,766
May 200801,029123.1711.57$11,910
Apr 200801,140110.3110.45$11,919
Mar 200801,143101.909.66$11,046
Feb 20082721,08492.538.77$34,675
Jan 200801,24790.388.21$10,233
Dec 200701,21788.337.30$8,887
Nov 2007087991.677.29$6,409
Oct 2007094582.856.92$6,541
Sep 200734086775.846.24$31,199
Aug 200718377369.066.39$17,576
Jul 2007086870.906.39$5,545
Jun 2007084262.007.55$6,356
May 2007087258.747.85$6,842
Apr 2007082559.617.81$6,439
Mar 2007043956.927.30$3,206
Feb 2007061855.108.22$5,077
Jan 200734083150.306.73$22,692
Dec 2006098156.656.92$6,787
Nov 2006092254.207.62$7,023
Oct 200601,10554.906.01$6,645
Sep 2006081860.085.04$4,120
Aug 200601,01868.717.34$7,472
Jul 200601,08969.376.34$6,907
Jun 200601,05566.286.38$6,735
May 20063151,09766.016.42$27,841
Apr 200601,13264.397.36$8,332
Mar 20061721,21256.707.08$18,337
Feb 200601,09657.597.75$8,495
Jan 200601,22860.598.93$10,970
Dec 200501,24154.9413.42$16,649
Nov 200501,20654.6910.59$12,770
Oct 20053471,28358.3413.80$37,944
Sep 200501,14461.4512.08$13,818
Aug 200501,23561.519.80$12,099
Jul 200501,28655.697.84$10,087
Jun 20051671,23652.337.38$17,862
May 200501,32045.226.65$8,780
Apr 200501,25949.207.36$9,267
Mar 20052881,26350.377.15$23,543
Feb 200501,08545.226.31$6,848
Jan 200501,27343.166.32$8,048
Dec 200401,32739.866.75$8,959
Nov 20041831,26145.286.33$16,269
Oct 200401,30249.706.52$8,483
Sep 20042611,12943.245.28$17,251
Aug 200401,27442.375.55$7,072
Jul 200401,32838.286.08$8,080
Jun 200401,31736.106.43$8,472
May 200401,33237.486.49$8,651
Apr 20042351,33734.475.86$15,933
Mar 200401,34434.365.53$7,433
Feb 200401,16732.455.51$6,430
Jan 20041781,30932.036.30$13,948
Dec 20032091,35230.266.30$14,844
Nov 200301,28628.804.60$5,909
Oct 200301,39428.174.76$6,635
Sep 200301,35126.314.75$6,416
Aug 20032981,41429.765.13$16,122
Jul 200301,40629.415.17$7,270
Jun 200301,38428.565.98$8,280
May 20031671,40126.595.97$12,808
Apr 200301,38626.675.41$7,494
Mar 20033131,49631.146.10$18,867
Feb 200301,43733.487.93$11,389
Jan 200301,64630.315.58$9,188
Dec 200201,52526.914.85$7,402
Nov 200201,48324.664.14$6,135
Oct 20023591,55426.464.23$16,071
Sep 200201,42227.443.64$5,169
Aug 200201,45625.963.16$4,607
Jul 2002243024.583.06$5,973
Jun 200201,52123.733.34$5,077
May 200201,55924.663.58$5,587
Apr 200201,55023.653.51$5,444
Mar 20025751,65222.003.10$17,776
Feb 200201,55018.222.38$3,682
Jan 200201,46717.172.38$3,485
Dec 20012611,35216.932.36$7,615
Nov 200101,54618.072.41$3,719
Oct 200101,55219.782.53$3,925
Sep 200101,48024.262.25$3,332
Aug 20014231,45324.873.05$14,956
Jul 200101,54023.933.20$4,924
Jun 200101,52524.563.82$5,832
May 20012221,59625.524.31$12,540
Apr 200101,63024.685.34$8,697
Mar 20011831,58424.545.38$13,007
Feb 20013381,36827.755.77$17,269
Jan 200101,74427.478.40$14,647
Dec 200001,84626.889.12$16,840
Nov 200001,90832.215.66$10,795
Oct 200002,21731.235.15$11,408
Sep 20004981,17831.875.19$21,981
Aug 200001,02529.644.54$4,654
Jul 20003641,05828.534.09$14,712
Jun 200001,11729.304.40$4,912
May 200001,33227.263.68$4,901
Apr 200001,26824.513.12$3,951
Mar 200001,33428.422.86$3,815
Feb 20003631,24627.622.73$13,423
Jan 200001,41425.272.48$3,507
Dec 199901,45924.282.42$3,536
Nov 199911,45023.192.43$3,552
Oct 19997091,51520.982.80$19,122
Sep 199941,49121.752.62$3,992
Aug 199941,65319.262.88$4,830
Jul 199941,74817.892.37$4,218
Jun 199961,90515.942.36$4,595
May 19993691,24915.792.32$8,725
Apr 199951,41815.102.21$3,207
Mar 199951,45812.471.84$2,743
Feb 19993611,3299.981.82$6,019
Jan 199941,54810.381.90$2,983
Dec 199841,5609.201.77$2,803
Nov 199851,54810.892.19$3,438
Oct 19983621,66512.421.97$7,775
Sep 19983621,64212.592.08$7,977
Aug 199821,75111.301.91$3,362
Jul 199821,81411.742.24$4,082
Jun 19983501,66011.242.24$7,648
May 199831,75912.622.21$3,919
Apr 199861,78513.042.51$4,550
Mar 199811,82212.802.31$4,221
Feb 19983441,52113.952.30$8,296
Jan 199821,88014.702.15$4,080
Dec 199721,88416.322.41$4,575
Nov 19973561,90218.193.09$12,350
Oct 199722,02819.253.15$6,426
Sep 199722,10717.742.95$6,261
Aug 19977011,95817.862.55$17,522
Jul 199721,97317.582.25$4,468
Jun 199751,91317.242.26$4,404
May 19973491,99918.972.31$11,235
Apr 199721,93017.882.08$4,056
Mar 19973581,95818.951.94$10,581
Feb 199731,70020.492.21$3,812
Jan 199722,06023.483.54$7,339
Dec 19963581,98523.32$8,349
Nov 199621,98421.97$44
Oct 19963581,93923.31$8,345
Sep 199623,81822.22$44
Aug 19963083,39120.26$6,240
Jul 19963573,12119.55$6,979
Jun 199622,78718.73$37
May 199622,71819.43$39
Apr 19963611,89221.51$7,765
Mar 199621,92419.38$39
Feb 199621,77316.98$34
Jan 19963491,91217.07$5,957
Dec 199522,01217.19$34
Nov 199502,00016.00$0
Oct 19956182,18715.43$9,536
Sep 199522,04116.18$32
Aug 199522,03015.92$32
Jul 199522,06015.24$30
Jun 19953482,02616.41$5,711
May 199522,56617.56$35
Apr 19955432,19917.73$9,627
Mar 199522,20616.44$33
Feb 199501,96916.58$0
Jan 19953552,20315.92$5,652
Dec 199402,22515.03$0
Nov 19943552,15915.90$5,645
Oct 199422,38115.58$31
Sep 19941752,20715.29$2,676
Aug 199402,32016.13$0
Jul 19943522,44417.56$6,181
Jun 199422,37517.09$34
May 19945402,17115.88$8,575
Apr 199422,08814.14$28
Mar 19943552,32412.46$4,423
Feb 199402,32012.50$0
Jan 199402,03412.66$0
Dec 19933552,13212.33$4,377
Nov 199302,03414.49$0
Oct 19937023,53115.85$11,127
Sep 199322,17115.03$30
Aug 19933452,36815.66$5,403
Jul 199322,37715.46$31
Jun 199322,30016.79$34
May 199322,45417.68$35
Apr 19933532,30918.05$6,372
Mar 199302,33018.14$0
Feb 19936012,14017.90$10,758
Jan 199302,35616.93$0

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.

Mar 2021 — as filed, then multipliedworked
Oil                    0 bbl  × $ 61.30 =         $0
Casinghead gas        43 Mcf  × $  2.72 =       $117

────────────────────────────────────────────────────
Month total                                     $117

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/28427 is the state's own key, not one this site invented.