BOULDIN, CLIFFORD

Operated by TANGLEWOOD OIL & GAS CO. (P-5 835716) in the COLEMAN COUNTY REGULAR field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 837District 7BField 19511001OilCasinghead gasSaveExport
Value, all time
$854 k
Jan 1993 – May 2026
Value, last 12 filed months
$103 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 892 leases and 2,428 wells, and the rule below applies to all of them.

Discovered
1910-12-31
as the register files it
Field class
Oil and gas
the register's own label
Between wells
no field rule filed
From a lease line
no field rule filed

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
OilDisposition15,367 bbl$853,900
Casinghead gasProduction15 Mcf$0
Total$853,900

15 Mcf of this lease's gas, across 15 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 (15)

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 31.6442, -99.4701. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.3 miles.

31.64467, -99.46985 · 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
40.0%
6 of 15 wells
With a plug date
33.3%
5 of 15 wells
Median depth
923 ft
11 wells filed one
Completion to plug
63.1 years
median over 2 wells

What the state filed about each well

On the RRC proration schedule
640.0%
A plug date is filed
533.3%
BothOn the schedule and plugged. Neither fact cancels the other.
533.3%
NeitherNo plug date, and not on the schedule.
960.0%

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

Total depth in feet, 11 of 15 wells. Median 923 ft, with the middle half between 839 and 948 ft; the shallowest is 820 ft and the deepest 961 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, 8 of 15 wells, Jan 1958 – Aug 2025. 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 1958 – Aug 2025
8 of 15 wells; 7 filed none
Plug dates filed
Jul 1924 – Mar 2021
5 of 15 wells; 10 filed none

Last completion to plug: a median of 63.1 years across the 2 wells that filed both dates, with the middle half between 63.0 years and 63.1 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

15 wells

42-083805072832 ftJul 1924Yes
42-083805083820 ftDec 2016Yes
42-083805105827 ftDec 2016Yes
42-083805127Yes
42-083805061
42-083805094
42-083805116
42-0833628415943 ftAug 2025
42-0833628014943 ftJul 2024
42-0833627412923 ftOct 2023
42-0833626411960 ftJan 2023
42-0833623510961 ftJan 2019
42-083362029953 ftJun 2017
42-083820128873 ftJan 1958Mar 2021Yes
42-083820137A845 ftJan 1958Dec 2020Yes

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 20261040106.413.05$11,067
Apr 2026109098.932.87$10,783
Mar 202688089.753.15$7,898
Feb 202696063.503.75$6,096
Jan 2026178059.138.00$10,525
Dec 2025186056.664.41$10,539
Nov 20250058.593.93$0
Oct 2025178059.383.30$10,570
Sep 20250062.743.08$0
Aug 2025181063.933.01$11,571
Jul 2025179066.743.32$11,946
Jun 2025180066.483.13$11,966
May 20250060.553.23$0
Apr 2025182062.363.54$11,350
Mar 20250067.704.27$0
Feb 2025189070.884.34$13,396
Jan 2025182074.324.28$13,526
Dec 20240068.993.12$0
Nov 2024173069.052.20$11,946
Oct 2024175071.372.28$12,490
Sep 2024183069.612.36$12,739
Aug 2024179075.632.06$13,538
Jul 2024169079.932.15$13,508
Jun 2024182078.082.63$14,211
May 2024182078.812.20$14,343
Apr 20240084.451.66$0
Mar 2024177080.301.55$14,213
Feb 2024177076.091.78$13,468
Jan 2024357073.023.30$26,068
Dec 20230071.262.61$0
Nov 2023181077.892.81$14,098
Oct 2023171085.443.09$14,610
Sep 2023174089.042.74$15,493
Aug 20230080.522.67$0
Jul 2023175074.852.64$13,099
Jun 20230068.962.26$0
May 2023184070.622.23$12,994
Apr 2023179078.122.24$13,983
Mar 20230072.852.39$0
Feb 2023183075.112.47$13,745
Jan 2023175076.533.39$13,393
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 20221630115.097.98$18,760
May 202200109.378.43$0
Apr 202200104.226.84$0
Mar 202200108.885.08$0
Feb 2022181091.054.86$16,480
Jan 20220081.844.54$0
Dec 20210071.323.90$0
Nov 20210077.435.24$0
Oct 20210079.795.71$0
Sep 2021177069.865.35$12,365
Aug 20210066.024.22$0
Jul 20210070.783.98$0
Jun 20210069.493.38$0
May 2021169063.483.02$10,728
Apr 20210060.362.76$0
Mar 20210061.302.72$0
Feb 20210057.805.55$0
Jan 2021187050.412.81$9,427
Dec 20200044.642.68$0
Nov 20200038.772.71$0
Oct 20200036.972.48$0
Sep 2020171037.091.99$6,342
Aug 20200039.982.39$0
Jul 2020172038.371.83$6,600
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 2020173057.252.09$9,904
Dec 20190059.012.30$0
Nov 20190055.302.75$0
Oct 2019158053.472.42$8,448
Sep 20190055.052.66$0
Aug 20190053.112.30$0
Jul 2019168056.272.46$9,453
Jun 20190052.782.49$0
May 2019168058.482.74$9,825
Apr 20190062.632.75$0
Mar 2019167056.803.06$9,486
Feb 20190050.852.79$0
Jan 2019181046.033.23$8,331
Dec 20180046.594.19$0
Nov 20180052.934.24$0
Oct 20180061.443.40$0
Sep 20180059.543.11$0
Aug 2018173059.403.07$10,276
Jul 20180065.142.93$0
Jun 20180060.183.08$0
May 20180065.382.90$0
Apr 2018178063.842.90$11,364
Mar 20180061.222.79$0
Feb 20180061.782.77$0
Jan 20180062.874.01$0
Dec 20170057.272.92$0
Nov 2017175055.423.12$9,699
Oct 20170049.292.98$0
Sep 20170047.523.09$0
Aug 20170045.373.00$0
Jul 2017173043.873.09$7,590
Jun 20170042.493.09$0
May 20170045.373.26$0
Apr 20170047.933.21$0
Mar 2017175046.772.98$8,185
Feb 20170050.452.95$0
Jan 20170049.413.42$0
Dec 20160048.763.72$0
Nov 20160042.492.64$0
Oct 20160046.193.09$0
Sep 20160041.553.10$0
Aug 20160041.442.92$0
Jul 20160041.622.92$0
Jun 20160045.352.69$0
May 20160042.521.99$0
Apr 20160036.561.99$0
Mar 20160033.011.79$0
Feb 20160026.472.06$0
Jan 20160027.352.36$0
Dec 20150032.362.00$0
Nov 20150038.792.17$0
Oct 20150043.552.43$0
Sep 20150042.992.76$0
Aug 20150040.162.87$0
Jul 20150048.152.95$0
Jun 20150056.152.88$0
May 20150055.212.96$0
Apr 20150049.822.71$0
Mar 20150042.892.93$0
Feb 20150044.662.98$0
Jan 20150043.433.10$0
Dec 20140054.693.59$0
Nov 20140070.464.25$0
Oct 20140078.303.90$0
Sep 20140086.164.05$0
Aug 20140089.394.04$0
Jul 20140096.564.18$0
Jun 2014156098.164.74$15,313
May 20140094.734.73$0
Apr 20140095.944.81$0
Mar 20140095.895.06$0
Feb 20140097.406.19$0
Jan 20140090.404.86$0
Dec 20130091.824.35$0
Nov 20130088.853.74$0
Oct 20130097.423.78$0
Sep 201300104.113.72$0
Aug 201300104.253.52$0
Jul 201300102.523.72$0
Jun 20130094.403.93$0
May 20130094.834.15$0
Apr 20130093.964.28$0
Mar 20130093.623.91$0
Feb 20130091.233.42$0
Jan 20130091.603.42$0
Dec 20120086.773.42$0
Nov 20120086.953.62$0
Oct 20120089.383.40$0
Sep 2012172094.672.92$16,283
Aug 20120092.662.91$0
Jul 20120085.133.02$0
Jun 20120079.822.52$0
May 20120091.612.49$0
Apr 201200101.652.00$0
Mar 201200105.052.22$0
Feb 201200101.102.57$0
Jan 20120098.092.73$0
Dec 20110096.873.24$0
Nov 20110095.723.31$0
Oct 2011167084.983.65$14,192
Sep 20110083.623.99$0
Aug 20110083.404.15$0
Jul 20110094.144.52$0
Jun 20110092.904.64$0
May 20110098.134.40$0
Apr 201100105.964.33$0
Mar 20110096.364.06$0
Feb 20110085.644.18$0
Jan 2011172086.504.59$14,878
Dec 20100085.734.35$0
Nov 20100080.843.80$0
Oct 20100078.103.51$0
Sep 20100072.633.98$0
Aug 20100073.684.42$0
Jul 20100072.554.74$0
Jun 20100070.364.91$0
May 20100071.124.24$0
Apr 20100081.694.12$0
Mar 20100078.394.39$0
Feb 2010176073.585.44$12,950
Jan 20100074.365.96$0
Dec 20090071.445.48$0
Nov 20090074.593.75$0
Oct 20090072.544.11$0
Sep 20090065.543.06$0
Aug 20090067.423.22$0
Jul 20090061.133.46$0
Jun 2009177066.163.90$11,710
May 20090054.743.93$0
Apr 20090046.773.59$0
Mar 20090042.144.06$0
Feb 2009175032.814.63$5,742
Jan 20090035.865.37$0
Dec 20080037.105.98$0
Nov 20080055.496.86$0
Oct 20080075.246.92$0
Sep 200800101.767.88$0
Aug 200800114.228.48$0
Jul 20081730131.0811.39$22,677
Jun 200800131.3313.03$0
May 200800123.1711.57$0
Apr 200800110.3110.45$0
Mar 200800101.909.66$0
Feb 20080092.538.77$0
Jan 2008173090.388.21$15,636
Dec 20070088.337.30$0
Nov 20070091.677.29$0
Oct 20070082.856.92$0
Sep 20070075.846.24$0
Aug 20070069.066.39$0
Jul 20070070.906.39$0
Jun 20070062.007.55$0
May 2007178058.747.85$10,456
Apr 20070059.617.81$0
Mar 20070056.927.30$0
Feb 20070055.108.22$0
Jan 20070050.306.73$0
Dec 20060056.656.92$0
Nov 20060054.207.62$0
Oct 20060054.906.01$0
Sep 20060060.085.04$0
Aug 2006180068.717.34$12,368
Jul 20060069.376.34$0
Jun 20060066.286.38$0
May 20060066.016.42$0
Apr 20060064.397.36$0
Mar 20060056.707.08$0
Feb 20060057.597.75$0
Jan 2006166060.598.93$10,058
Dec 20050054.9413.42$0
Nov 20050054.6910.59$0
Oct 20050058.3413.80$0
Sep 2005165061.4512.08$10,139
Aug 20050061.519.80$0
Jul 20050055.697.84$0
Jun 20050052.337.38$0
May 20050045.226.65$0
Apr 20050049.207.36$0
Mar 20050050.377.15$0
Feb 2005171045.226.31$7,733
Jan 20050043.166.32$0
Dec 20040039.866.75$0
Nov 20040045.286.33$0
Oct 20040049.706.52$0
Sep 2004174043.245.28$7,524
Aug 20040042.375.55$0
Jul 20040038.286.08$0
Jun 20040036.106.43$0
May 20040037.486.49$0
Apr 20040034.475.86$0
Mar 2004167034.365.53$5,738
Feb 20040032.455.51$0
Jan 20040032.036.30$0
Dec 20030030.266.30$0
Nov 20030028.804.60$0
Oct 20030028.174.76$0
Sep 20030026.314.75$0
Aug 20030029.765.13$0
Jul 20030029.415.17$0
Jun 20030028.565.98$0
May 20030026.595.97$0
Apr 20030026.675.41$0
Mar 2003149031.146.10$4,640
Feb 20030033.487.93$0
Jan 20030030.315.58$0
Dec 20020026.914.85$0
Nov 20020024.664.14$0
Oct 20020026.464.23$0
Sep 20020027.443.64$0
Aug 2002174025.963.16$4,517
Jul 20020024.583.06$0
Jun 20020023.733.34$0
May 20020024.663.58$0
Apr 20020023.653.51$0
Mar 20020022.003.10$0
Feb 20020018.222.38$0
Jan 20020017.172.38$0
Dec 2001167016.932.36$2,827
Nov 20010018.072.41$0
Oct 20010019.782.53$0
Sep 20010024.262.25$0
Aug 20010024.873.05$0
Jul 20010023.933.20$0
Jun 20010024.563.82$0
May 20010025.524.31$0
Apr 2001168024.685.34$4,146
Mar 20010024.545.38$0
Feb 20010027.755.77$0
Jan 20010027.478.40$0
Dec 20000026.889.12$0
Nov 20000032.215.66$0
Oct 2000178031.235.15$5,559
Sep 20000031.875.19$0
Aug 20000029.644.54$0
Jul 20000028.534.09$0
Jun 20000029.304.40$0
May 2000175027.263.68$4,771
Apr 20000024.513.12$0
Mar 20000028.422.86$0
Feb 20000027.622.73$0
Jan 20000025.272.48$0
Dec 1999180024.282.42$4,370
Nov 19990023.192.43$0
Oct 19990020.982.80$0
Sep 19990021.752.62$0
Aug 19990019.262.88$0
Jul 1999177017.892.37$3,167
Jun 19990015.942.36$0
May 19990015.792.32$0
Apr 19990015.102.21$0
Mar 19990012.471.84$0
Feb 199918009.981.82$1,796
Jan 19990010.381.90$0
Dec 1998009.201.77$0
Nov 19980010.892.19$0
Oct 19980012.421.97$0
Sep 19980012.592.08$0
Aug 1998180011.301.91$2,034
Jul 19980011.742.24$0
Jun 19980011.242.24$0
May 19980012.622.21$0
Apr 19980013.042.51$0
Mar 19980012.802.31$0
Feb 1998176013.952.30$2,455
Jan 19980014.702.15$0
Dec 19970016.322.41$0
Nov 19970018.193.09$0
Oct 1997178019.253.15$3,427
Sep 19970017.742.95$0
Aug 19970017.862.55$0
Jul 1997177017.582.25$3,112
Jun 19970017.242.26$0
May 19970018.972.31$0
Apr 19970017.882.08$0
Mar 19970018.951.94$0
Feb 19970020.492.21$0
Jan 19970023.483.54$0
Dec 19960023.32$0
Nov 19960021.97$0
Oct 19960023.31$0
Sep 1996160022.22$3,555
Aug 19960020.26$0
Jul 19960019.55$0
Jun 1996164018.73$3,072
May 19960019.43$0
Apr 19960021.51$0
Mar 1996163019.38$3,159
Feb 19960016.98$0
Jan 19960017.07$0
Dec 1995177017.19$3,043
Nov 19950016.00$0
Oct 19950015.43$0
Sep 1995168016.18$2,718
Aug 19950015.92$0
Jul 1995169015.24$2,576
Jun 19950016.41$0
May 19950017.56$0
Apr 19950017.73$0
Mar 1995165016.44$2,713
Feb 19950016.58$0
Jan 1995175015.92$2,786
Dec 19940015.03$0
Nov 19940015.90$0
Oct 1994174015.58$2,711
Sep 1994169015.29$2,584
Aug 19940116.13$0
Jul 19940117.56$0
Jun 19940117.09$0
May 19940115.88$0
Apr 1994165014.14$2,333
Mar 19940012.46$0
Feb 19940012.50$0
Jan 19940112.66$0
Dec 19930012.33$0
Nov 19930014.49$0
Oct 19930115.85$0
Sep 19930115.03$0
Aug 19930115.66$0
Jul 19930115.46$0
Jun 19930116.79$0
May 19930117.68$0
Apr 19930118.05$0
Mar 19930118.14$0
Feb 19930117.90$0
Jan 19930116.93$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.

May 2026 — as filed, then multipliedworked
Oil                  104 bbl  × $106.41 =    $11,067
Casinghead gas         0 Mcf  × $  3.05 =         $0

────────────────────────────────────────────────────
Month total                                  $11,067

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. 7B/O/837 is the state's own key, not one this site invented.