GRAY LINE GRAY SAND

Operated by QUAIL WELL SERVICE, INC. (P-5 684502) in the ROBERTSON-GRIFFIN (GRAY SAND) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 31381District 7BField 77337500OilSave
Value, all time
$2.5 M
Dec 2013 – May 2026
Value, last 12 filed months
$515 k
at the published price for each month
Months reported
150
no gaps in the span
Streams
1
oil

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
OilDisposition36,719 bbl$2,453,491
Total$2,453,491

Wells on this lease (8)

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 32.0855, -99.6756. A lease has no coordinate of its own — that point is the mean of its wells, and they span 1.0 miles.

32.08757, -99.67699 · 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
12.5%
1 of 8 wells
With a plug date
50.0%
4 of 8 wells
Median depth
4,034 ft
8 wells filed one
Completion to plug
12 months
median over 1 wells

What the state filed about each well

On the RRC proration schedule
112.5%
A plug date is filed
450.0%
BothOn the schedule and plugged. Neither fact cancels the other.
112.5%
NeitherNo plug date, and not on the schedule.
450.0%

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

0k
2k
4k
6k
8k
10k
12k
15k
20k+

Total depth in feet, 8 of 8 wells. Median 4,034 ft, with the middle half between 4,014 and 4,087 ft; the shallowest is 4,000 ft and the deepest 5,629 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

10s
20s

Last completion by decade, 8 of 8 wells, Dec 2013 – Dec 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
Dec 2013 – Dec 2025
8 of 8 wells
Plug dates filed
Jun 1982 – Jun 2015
4 of 8 wells; 4 filed none

Last completion to plug: a median of 12 months across the 1 well that filed both dates, with the middle half between 12 months and 12 months. A further 3 wells are excluded, because the last completion the Commission holds for them is dated after the plug date. Both dates are the latest of their kind on the wellbore record and they are filed separately, so the two need not run in order. The gap is the distance between two filed dates — it is not a statement of how long the well produced.

8 wells

42-44134727104,100 ftDec 2025
42-4418056884,010 ftJul 2025Jun 1982
42-4413469274,082 ftApr 2024
42-441051941W5,629 ftJun 2022
42-4410522654,020 ftMay 2022Jun 2008
42-4410181044,000 ftOct 2021Mar 1989
42-4413447034,015 ftJun 2014Jun 2015Yes
42-4413444214,048 ftDec 2013

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 (150)

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

150 months

May 2026686106.413.05$72,997
Apr 202667598.932.87$66,778
Mar 202667589.753.15$60,581
Feb 202685663.503.75$54,356
Jan 202634559.138.00$20,400
Dec 202550656.664.41$28,670
Nov 202551558.593.93$30,174
Oct 202552159.383.30$30,937
Sep 202552362.743.08$32,813
Aug 202552563.933.01$33,563
Jul 202555166.743.32$36,774
Jun 202570866.483.13$47,068
May 202550360.553.23$30,457
Apr 202550862.363.54$31,679
Mar 202551167.704.27$34,595
Feb 202536470.884.34$25,800
Jan 202534574.324.28$25,640
Dec 202451268.993.12$35,323
Nov 202435769.052.20$24,651
Oct 202435071.372.28$24,980
Sep 202417269.612.36$11,973
Aug 202435875.632.06$27,076
Jul 202416279.932.15$12,949
Jun 202435878.082.63$27,953
May 202434578.812.20$27,189
Apr 202417084.451.66$14,357
Mar 202416580.301.55$13,250
Feb 202417576.091.78$13,316
Jan 2024073.023.30$0
Dec 202316571.262.61$11,758
Nov 202317477.892.81$13,553
Oct 202317685.443.09$15,037
Sep 2023089.042.74$0
Aug 202317080.522.67$13,688
Jul 2023074.852.64$0
Jun 202316868.962.26$11,585
May 2023070.622.23$0
Apr 2023078.122.24$0
Mar 202317272.852.39$12,530
Feb 202335275.112.47$26,439
Jan 2023076.533.39$0
Dec 202216976.415.73$12,913
Nov 2022085.005.65$0
Oct 202216587.185.86$14,385
Sep 202217784.888.16$15,024
Aug 202217194.529.13$16,163
Jul 2022175101.587.54$17,777
Jun 2022171115.097.98$19,680
May 2022349109.378.43$38,170
Apr 20220104.226.84$0
Mar 2022171108.885.08$18,618
Feb 202216691.054.86$15,114
Jan 202216981.844.54$13,831
Dec 202117471.323.90$12,410
Nov 202117877.435.24$13,783
Oct 202126479.795.71$21,065
Sep 2021069.865.35$0
Aug 202117366.024.22$11,421
Jul 202116570.783.98$11,679
Jun 202117669.493.38$12,230
May 2021063.483.02$0
Apr 2021060.362.76$0
Mar 202117061.302.72$10,421
Feb 202117657.805.55$10,173
Jan 202117350.412.81$8,721
Dec 2020044.642.68$0
Nov 202017138.772.71$6,630
Oct 202017236.972.48$6,359
Sep 202016537.091.99$6,120
Aug 202016739.982.39$6,677
Jul 202017138.371.83$6,561
Jun 202011534.901.69$4,014
May 202016816.921.81$2,843
Apr 202034114.751.80$5,030
Mar 202017330.341.86$5,249
Feb 202034249.881.98$17,059
Jan 2020057.252.09$0
Dec 2019059.012.30$0
Nov 2019055.302.75$0
Oct 2019053.472.42$0
Sep 2019055.052.66$0
Aug 2019053.112.30$0
Jul 2019056.272.46$0
Jun 2019052.782.49$0
May 2019058.482.74$0
Apr 2019062.632.75$0
Mar 2019056.803.06$0
Feb 2019050.852.79$0
Jan 2019046.033.23$0
Dec 2018046.594.19$0
Nov 2018052.934.24$0
Oct 201816261.443.40$9,953
Sep 2018059.543.11$0
Aug 2018059.403.07$0
Jul 2018065.142.93$0
Jun 201816660.183.08$9,990
May 2018065.382.90$0
Apr 2018063.842.90$0
Mar 20183861.222.79$2,326
Feb 201817661.782.77$10,873
Jan 201816762.874.01$10,499
Dec 2017057.272.92$0
Nov 201734455.423.12$19,064
Oct 201717649.292.98$8,675
Sep 201716847.523.09$7,983
Aug 201717045.373.00$7,713
Jul 201734043.873.09$14,916
Jun 201716842.493.09$7,138
May 201717245.373.26$7,804
Apr 201716947.933.21$8,100
Mar 201735146.772.98$16,416
Feb 201716550.452.95$8,324
Jan 201733449.413.42$16,503
Dec 2016048.763.72$0
Nov 201635942.492.64$15,254
Oct 201616646.193.09$7,668
Sep 201633941.553.10$14,085
Aug 201616841.442.92$6,962
Jul 201633841.622.92$14,068
Jun 201616445.352.69$7,437
May 201634842.521.99$14,797
Apr 201634236.561.99$12,504
Mar 201617233.011.79$5,678
Feb 201635026.472.06$9,265
Jan 201634227.352.36$9,354
Dec 201534832.362.00$11,261
Nov 201517538.792.17$6,788
Oct 201551743.552.43$22,515
Sep 201535042.992.76$15,047
Aug 201517240.162.87$6,908
Jul 201533648.152.95$16,178
Jun 201533656.152.88$18,866
May 201534555.212.96$19,047
Apr 201533849.822.71$16,839
Mar 201535242.892.93$15,097
Feb 201536244.662.98$16,167
Jan 201517043.433.10$7,383
Dec 201454154.693.59$29,587
Nov 201452370.464.25$36,851
Oct 201452878.303.90$41,342
Sep 201450786.164.05$43,683
Aug 201450889.394.04$45,410
Jul 201450796.564.18$48,956
Jun 201451698.164.74$50,651
May 201486194.734.73$81,563
Apr 201455195.944.81$52,863
Mar 201464895.895.06$62,137
Feb 201469697.406.19$67,790
Jan 201484390.404.86$76,207
Dec 2013091.824.35$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                  686 bbl  × $106.41 =    $72,997

────────────────────────────────────────────────────
Month total                                  $72,997

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/31381 is the state's own key, not one this site invented.