COFFIELD "B-10"

Operated by BETRO, INC. (P-5 68324) in the MILBUR, SE. (NAVARRO -A-) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 18389District 03Field 61353500NGPA filingOilCasinghead gasSaveExport
Value, all time
$666 k
Jan 1993 – May 2026
Value, last 12 filed months
$11 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 6 leases and 7 wells, and the rule below applies to all of them.

Discovered
1976-07-09
as the register files it
Field class
Oil
the register's own label
Between wells
no field rule filed
From a lease line
no field rule filed

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
NGPA1none

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
OilDisposition13,523 bbl$571,996
Casinghead gasProduction30,448 Mcf$93,901
Total$665,896

8,171 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 30.5962, -96.8598. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.0 miles.

30.59617, -96.85979 · 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
3,430 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 3,430 ft.

Completions filed
Mar 1985
1 of 1 wells

1 well

42-0513280543,430 ftMar 1985

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 202602789.753.15$85
Feb 202602463.503.75$90
Jan 202602559.138.00$200
Dec 20251803156.664.41$10,336
Nov 202502458.593.93$94
Oct 202502859.383.30$93
Sep 202503062.743.08$92
Aug 202503063.933.01$90
Jul 202503266.743.32$106
Jun 202504966.483.13$153
May 202502960.553.23$94
Apr 202509462.363.54$333
Mar 20251792167.704.27$12,208
Feb 202503270.884.34$139
Jan 202501474.324.28$60
Dec 202403468.993.12$106
Nov 202405069.052.20$110
Oct 202405571.372.28$125
Sep 202408069.612.36$189
Aug 202402975.632.06$60
Jul 202404979.932.15$105
Jun 20241766578.082.63$13,913
May 202405978.812.20$130
Apr 202403084.451.66$50
Mar 202402780.301.55$42
Feb 202402976.091.78$52
Jan 202403273.023.30$106
Dec 202302071.262.61$52
Nov 202304477.892.81$124
Oct 202306485.443.09$198
Sep 202303589.042.74$96
Aug 202306080.522.67$160
Jul 202306074.852.64$159
Jun 20231791968.962.26$12,387
May 202304070.622.23$89
Apr 202304178.122.24$92
Mar 202303372.852.39$79
Feb 202302975.112.47$72
Jan 202302376.533.39$78
Dec 202204476.415.73$252
Nov 202201885.005.65$102
Oct 20220487.185.86$23
Sep 202202784.888.16$220
Aug 20221943194.529.13$18,620
Jul 2022023101.587.54$173
Jun 2022034115.097.98$271
May 2022037109.378.43$312
Apr 2022018104.226.84$123
Mar 2022034108.885.08$173
Feb 202201291.054.86$58
Jan 202202781.844.54$123
Dec 202103571.323.90$136
Nov 202103577.435.24$183
Oct 20211701979.795.71$13,673
Sep 202104669.865.35$246
Aug 202104366.024.22$181
Jul 202105970.783.98$235
Jun 202104669.493.38$156
May 202105563.483.02$166
Apr 202103060.362.76$83
Mar 202104261.302.72$114
Feb 202101857.805.55$100
Jan 20211801550.412.81$9,116
Dec 202003944.642.68$104
Nov 202005038.772.71$135
Oct 20200036.972.48$0
Sep 202004037.091.99$80
Aug 202004139.982.39$98
Jul 202004238.371.83$77
Jun 202003534.901.69$59
May 202008616.921.81$156
Apr 2020012914.751.80$233
Mar 20200030.341.86$0
Feb 202001949.881.98$38
Jan 20201702357.252.09$9,781
Dec 201903359.012.30$76
Nov 201905855.302.75$160
Oct 201905053.472.42$121
Sep 201905855.052.66$154
Aug 201905753.112.30$131
Jul 201905956.272.46$145
Jun 201906652.782.49$164
May 20191813358.482.74$10,675
Apr 201906262.632.75$171
Mar 20190056.803.06$0
Feb 201905450.852.79$151
Jan 201904046.033.23$129
Dec 201806446.594.19$268
Nov 20180052.934.24$0
Oct 201802961.443.40$99
Sep 201806159.543.11$190
Aug 201805259.403.07$159
Jul 20181784565.142.93$11,727
Jun 201804460.183.08$135
May 201804365.382.90$125
Apr 201804963.842.90$142
Mar 201805361.222.79$148
Feb 201804661.782.77$127
Jan 201803662.874.01$144
Dec 201704257.272.92$123
Nov 201705755.423.12$178
Oct 20171766049.292.98$8,854
Sep 201702747.523.09$83
Aug 201705945.373.00$177
Jul 201706343.873.09$195
Jun 201706342.493.09$195
May 201706545.373.26$212
Apr 201706747.933.21$215
Mar 201707146.772.98$212
Feb 20171806250.452.95$9,264
Jan 201706049.413.42$205
Dec 201606048.763.72$223
Nov 201606642.492.64$175
Oct 201605646.193.09$173
Sep 201607241.553.10$223
Aug 201608841.442.92$257
Jul 201606441.622.92$187
Jun 20161727545.352.69$8,002
May 201608242.521.99$163
Apr 201608236.561.99$163
Mar 201609133.011.79$163
Feb 201605226.472.06$107
Jan 201605227.352.36$123
Dec 201506432.362.00$128
Nov 20151696038.792.17$6,686
Oct 201506143.552.43$148
Sep 201506442.992.76$177
Aug 201507340.162.87$210
Jul 201508348.152.95$244
Jun 201507856.152.88$225
May 20151367555.212.96$7,730
Apr 201507749.822.71$208
Mar 201506542.892.93$191
Feb 201506244.662.98$185
Jan 201504343.433.10$133
Dec 20141565254.693.59$8,718
Nov 201405570.464.25$234
Oct 201405178.303.90$199
Sep 201405786.164.05$231
Aug 201403789.394.04$149
Jul 201405196.564.18$213
Jun 201405898.164.74$275
May 201405394.734.73$251
Apr 201402795.944.81$130
Mar 201403595.895.06$177
Feb 20141665397.406.19$16,497
Jan 201403890.404.86$185
Dec 201304791.824.35$205
Nov 201305688.853.74$209
Oct 201305197.423.78$193
Sep 2013061104.113.72$227
Aug 201317164104.253.52$18,052
Jul 2013062102.523.72$231
Jun 201307294.403.93$283
May 201307094.834.15$290
Apr 201305293.964.28$223
Mar 201304293.623.91$164
Feb 20130091.233.42$0
Jan 201307191.603.42$243
Dec 201203186.773.42$106
Nov 20121726086.953.62$15,173
Oct 201207389.383.40$248
Sep 20120094.672.92$0
Aug 201209692.662.91$279
Jul 201206985.133.02$208
Jun 201206679.822.52$166
May 201207491.612.49$184
Apr 201217565101.652.00$17,919
Mar 2012062105.052.22$138
Feb 201200101.102.57$0
Jan 201207298.092.73$197
Dec 201107596.873.24$243
Nov 20111645995.723.31$15,893
Oct 201107384.983.65$266
Sep 201106983.623.99$275
Aug 201108083.404.15$332
Jul 201108094.144.52$361
Jun 201108292.904.64$380
May 20110098.134.40$0
Apr 201116184105.964.33$17,424
Mar 201106896.364.06$276
Feb 201103185.644.18$130
Jan 201104386.504.59$197
Dec 201007085.734.35$304
Nov 201004780.843.80$178
Oct 201006578.103.51$228
Sep 201007372.633.98$291
Aug 201005273.684.42$230
Jul 20101713172.554.74$12,553
Jun 201007870.364.91$383
May 201007471.124.24$313
Apr 201007381.694.12$301
Mar 20100078.394.39$0
Feb 201006073.585.44$327
Jan 201006574.365.96$388
Dec 20091705771.445.48$12,457
Nov 200906274.593.75$233
Oct 200907772.544.11$316
Sep 200906065.543.06$184
Aug 200907967.423.22$254
Jul 20091748061.133.46$10,914
Jun 200907866.163.90$304
May 200908254.743.93$322
Apr 200905946.773.59$212
Mar 200908442.144.06$341
Feb 200908032.814.63$371
Jan 20090035.865.37$0
Dec 2008168037.105.98$6,233
Nov 20080955.496.86$62
Oct 200808875.246.92$609
Sep 2008046101.767.88$362
Aug 2008084114.228.48$713
Jul 2008180100131.0811.39$24,733
Jun 20080100131.3313.03$1,303
May 2008064123.1711.57$741
Apr 2008038110.3110.45$397
Mar 200800101.909.66$0
Feb 200803392.538.77$289
Jan 20081763690.388.21$16,202
Dec 20070088.337.30$0
Nov 200707291.677.29$525
Oct 200708382.856.92$575
Sep 200708475.846.24$525
Aug 200708569.066.39$543
Jul 2007101070.906.39$7,161
Jun 20070062.007.55$0
May 200708758.747.85$683
Apr 20071828059.617.81$11,473
Mar 2007111456.927.30$889
Feb 200709555.108.22$781
Jan 200709450.306.73$632
Dec 20061788556.656.92$10,672
Nov 200609754.207.62$739
Oct 200609854.906.01$589
Sep 200609360.085.04$468
Aug 200609868.717.34$719
Jul 200617310369.376.34$12,654
Jun 2006010666.286.38$677
May 200609566.016.42$610
Apr 200602964.397.36$213
Mar 200609056.707.08$637
Feb 200607857.597.75$605
Jan 20061899760.598.93$12,318
Dec 200508754.9413.42$1,167
Nov 200508554.6910.59$900
Oct 200508858.3413.80$1,214
Sep 200508361.4512.08$1,003
Aug 200508061.519.80$784
Jul 20051807955.697.84$10,644
Jun 200508952.337.38$657
May 200509045.226.65$599
Apr 20051049.207.36$49
Mar 200509450.377.15$673
Feb 200517812745.226.31$8,851
Jan 2005011743.166.32$740
Dec 20040039.866.75$0
Nov 200406845.286.33$430
Oct 2004012049.706.52$782
Sep 20041856943.245.28$8,364
Aug 200407142.375.55$394
Jul 200404938.286.08$298
Jun 20040036.106.43$0
May 200408937.486.49$578
Apr 20041817734.475.86$6,690
Mar 200407834.365.53$431
Feb 200409032.455.51$496
Jan 200407732.036.30$485
Dec 2003175030.266.30$5,296
Nov 200307428.804.60$340
Oct 200309828.174.76$466
Sep 2003010526.314.75$499
Aug 2003010329.765.13$528
Jul 200314511029.415.17$4,833
Jun 2003012428.565.98$742
May 2003012226.595.97$729
Apr 20031729926.675.41$5,123
Mar 200303831.146.10$232
Feb 200304233.487.93$333
Jan 200301330.315.58$73
Dec 2002181026.914.85$4,871
Nov 20020024.664.14$0
Oct 200204626.464.23$195
Sep 200205427.443.64$196
Aug 20021836825.963.16$4,966
Jul 20020024.583.06$0
Jun 20020023.733.34$0
May 200205724.663.58$204
Apr 200206123.653.51$214
Mar 20020022.003.10$0
Feb 200204718.222.38$112
Jan 20021914517.172.38$3,386
Dec 20010016.932.36$0
Nov 200105918.072.41$142
Oct 200106419.782.53$162
Sep 200104624.262.25$104
Aug 20011857324.873.05$4,824
Jul 2001022023.933.20$703
Jun 200106324.563.82$241
May 200109225.524.31$396
Apr 20011958024.685.34$5,239
Mar 2001010924.545.38$586
Feb 2001010327.755.77$594
Jan 2001010727.478.40$899
Dec 200019010826.889.12$6,092
Nov 2000010632.215.66$600
Oct 2000011231.235.15$576
Sep 200007031.875.19$363
Aug 2000010429.644.54$472
Jul 20001848828.534.09$5,609
Jun 2000010329.304.40$453
May 2000011127.263.68$408
Apr 2000011624.513.12$361
Mar 2000010928.422.86$312
Feb 20001777827.622.73$5,101
Jan 2000011125.272.48$275
Dec 1999015324.282.42$371
Nov 1999011823.192.43$287
Oct 199917712020.982.80$4,050
Sep 1999012221.752.62$320
Aug 199917713419.262.88$3,794
Jul 1999011517.892.37$273
Jun 1999012715.942.36$300
May 199917811115.792.32$3,068
Apr 1999011315.102.21$250
Mar 1999011312.471.84$208
Feb 199901169.981.82$211
Jan 1999012410.381.90$236
Dec 19981781219.201.77$1,852
Nov 1998012010.892.19$262
Oct 1998012212.421.97$240
Sep 199817812012.592.08$2,491
Aug 1998012111.301.91$231
Jul 1998010711.742.24$239
Jun 199806511.242.24$145
May 199808412.622.21$185
Apr 1998013313.042.51$333
Mar 199818013812.802.31$2,623
Feb 1998012113.952.30$278
Jan 1998013314.702.15$287
Dec 19970016.322.41$0
Nov 199710912518.193.09$2,369
Oct 1997013719.253.15$432
Sep 199717713317.742.95$3,533
Aug 1997013717.862.55$350
Jul 19970017.582.25$0
Jun 199718213617.242.26$3,445
May 1997014318.972.31$330
Apr 1997013617.882.08$283
Mar 1997014318.951.94$277
Feb 199718013020.492.21$3,975
Jan 1997010123.483.54$358
Dec 1996013623.32$0
Nov 199617513821.97$3,845
Oct 1996014323.31$0
Sep 1996014322.22$0
Aug 199618214820.26$3,687
Jul 1996116019.55$20
Jun 1996015218.73$0
May 199617715619.43$3,439
Apr 1996015421.51$0
Mar 1996014419.38$0
Feb 199618314316.98$3,107
Jan 1996015217.07$0
Dec 1995017317.19$0
Nov 199517917216.00$2,864
Oct 1995015815.43$0
Sep 199517616616.18$2,848
Aug 1995016615.92$0
Jul 1995016615.24$0
Jun 1995017916.41$0
May 199518018617.56$3,161
Apr 1995018217.73$0
Mar 1995017316.44$0
Feb 199515815116.58$2,620
Jan 1995016315.92$0
Dec 1994016415.03$0
Nov 199415516615.90$2,465
Oct 1994017715.58$0
Sep 199416618015.29$2,538
Aug 1994016216.13$0
Jul 199416119517.56$2,827
Jun 1994019717.09$0
May 199408815.88$0
Apr 1994012014.14$0
Mar 199417019112.46$2,118
Feb 1994019312.50$0
Jan 199417018212.66$2,152
Dec 1993020712.33$0
Nov 199316923214.49$2,449
Oct 1993029415.85$0
Sep 199307315.03$0
Aug 1993687615.66$1,065
Jul 1993019815.46$0
Jun 199312917816.79$2,166
May 1993020217.68$0
Apr 199315922018.05$2,870
Mar 1993022418.14$0
Feb 199335321717.90$6,319
Jan 199334523116.93$5,841

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 2026 — as filed, then multipliedworked
Oil                    0 bbl  × $ 89.75 =         $0
Casinghead gas        27 Mcf  × $  3.15 =        $85

────────────────────────────────────────────────────
Month total                                      $85

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. 03/O/18389 is the state's own key, not one this site invented.