MAYO, J. W. A/C 1

Operated by HEC PETROLEUM, INC. (P-5 370620) in the TAFT (4550) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 8976District 04Field 88119625OilCasinghead gasSaveExport
Value, all time
$1.4 M
Jan 1993 – May 2005
Value, last 12 filed months
$32 k
at the published price for each month
Months reported
149
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 13 wells, and the rule below applies to all of them.

Discovered
1977-07-10
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
OilDisposition64,757 bbl$1,232,702
Casinghead gasProduction73,903 Mcf$145,979
Total$1,378,681

38,747 Mcf of this lease's gas, across 39 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 (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 28.0315, -97.3811. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.4 miles.

28.03099, -97.38100 · 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%
8 of 8 wells
With a plug date
100.0%
8 of 8 wells
Median depth
4,992 ft
8 wells filed one
Completion to plug
17.0 years
median over 8 wells

What the state filed about each well

On the RRC proration schedule
8100.0%
A plug date is filed
8100.0%
BothOn the schedule and plugged. Neither fact cancels the other.
8100.0%
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

Total depth in feet, 8 of 8 wells. Median 4,992 ft, with the middle half between 4,971 and 5,221 ft; the shallowest is 4,928 ft and the deepest 5,919 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 8 wells, Apr 1978 – Apr 1992. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.

Completions filed
Apr 1978 – Apr 1992
8 of 8 wells
Plug dates filed
Oct 1992 – May 2005
8 of 8 wells

Last completion to plug: a median of 17.0 years across the 8 wells that filed both dates, with the middle half between 13.8 years and 20.3 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

8 wells

42-40932054825,900 ftApr 1992Mar 2003Yes
42-40901378194,929 ftMay 1988Jun 2004Yes
42-4090393869 D4,992 ftOct 1987Jun 2002Yes
42-4090393667 H4,992 ftJun 1987May 2005Yes
42-40901335154,928 ftSep 1985Oct 1992Yes
42-4090393566 D4,995 ftJul 1984Aug 2003Yes
42-4090393364 D4,985 ftDec 1980Apr 2005Yes
42-4090138461 D5,919 ftApr 1978Jun 2002Yes

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 (149)

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

149 months

May 20050045.226.65$0
Apr 20050049.207.36$0
Mar 20050050.377.15$0
Feb 20050045.226.31$0
Jan 20050043.166.32$0
Dec 20040039.866.75$0
Nov 20040045.286.33$0
Oct 20040049.706.52$0
Sep 20040043.245.28$0
Aug 200418228042.375.55$9,266
Jul 200413667538.286.08$9,313
Jun 200426157636.106.43$13,128
May 200422748937.486.49$11,684
Apr 2004012234.475.86$715
Mar 200403834.365.53$210
Feb 200417347732.455.51$8,242
Jan 200414342332.036.30$7,245
Dec 200314630030.266.30$6,308
Nov 200331530528.804.60$10,474
Oct 20033611928.174.76$1,581
Sep 20033610226.314.75$1,432
Aug 200319632829.765.13$7,516
Jul 200324839029.415.17$9,310
Jun 200312427128.565.98$5,163
May 200321243426.595.97$8,229
Apr 200326541726.675.41$9,322
Mar 200350870431.146.10$20,111
Feb 200358855433.487.93$24,077
Jan 200343753330.315.58$16,221
Dec 200254365226.914.85$17,777
Nov 200235137324.664.14$10,199
Oct 200223613026.464.23$6,794
Sep 20020027.443.64$0
Aug 2002744225.963.16$2,054
Jul 200249394624.583.06$15,014
Jun 200264180123.733.34$17,885
May 200232930324.663.58$9,199
Apr 200259456123.653.51$16,019
Mar 200225437522.003.10$6,752
Feb 200236680718.222.38$8,586
Jan 200268289317.172.38$13,831
Dec 20010016.932.36$0
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 20010024.685.34$0
Mar 20010024.545.38$0
Feb 20010027.755.77$0
Jan 20011,5654,16127.478.40$77,938
Dec 20000026.889.12$0
Nov 20007011332.215.66$2,894
Oct 200022433431.235.15$8,714
Sep 200026036331.875.19$10,169
Aug 200044721029.644.54$14,203
Jul 200043620128.534.09$13,261
Jun 200050120129.304.40$15,563
May 200039418027.263.68$11,403
Apr 200049020724.513.12$12,655
Mar 2000784128.422.86$2,334
Feb 20007710027.622.73$2,399
Jan 200011414425.272.48$3,238
Dec 19999514324.282.42$2,653
Nov 19998014623.192.43$2,211
Oct 199910814020.982.80$2,658
Sep 19998217721.752.62$2,247
Aug 19998114119.262.88$1,966
Jul 19998212717.892.37$1,768
Jun 19997715115.942.36$1,584
May 19997616715.792.32$1,588
Apr 199910117815.102.21$1,918
Mar 19997618912.471.84$1,295
Feb 1999991379.981.82$1,237
Jan 199911416010.381.90$1,487
Dec 19981842599.201.77$2,152
Nov 199818425710.892.19$2,565
Oct 199848788412.421.97$7,789
Sep 1998214212.592.08$352
Aug 199826849511.301.91$3,973
Jul 199834561711.742.24$5,431
Jun 199860056411.242.24$8,006
May 199829246912.622.21$4,720
Apr 199846286113.042.51$8,182
Mar 199824734112.802.31$3,949
Feb 199843441213.952.30$7,002
Jan 199845422214.702.15$7,152
Dec 199721170216.322.41$5,136
Nov 19971,13538918.193.09$21,847
Oct 19979302,17019.253.15$24,738
Sep 199724597317.742.95$7,221
Aug 199776971317.862.55$15,556
Jul 19971,40674417.582.25$26,389
Jun 19971,01671317.242.26$19,125
May 19971,44749618.972.31$28,595
Apr 19971,51549617.882.08$28,121
Mar 19971,18846518.951.94$23,414
Feb 199758915520.492.21$12,411
Jan 199750918623.483.54$12,610
Dec 199668718623.32$16,021
Nov 199667618021.97$14,852
Oct 199670518623.31$16,434
Sep 199653415522.22$11,865
Aug 199681215520.26$16,451
Jul 19967084519.55$13,841
Jun 199678038818.73$14,609
May 199668235619.43$13,251
Apr 199674435621.51$16,003
Mar 19963113319.38$601
Feb 19962912416.98$492
Jan 19963113317.07$529
Dec 19953012817.19$516
Nov 199580256016.00$12,832
Oct 199566254415.43$10,215
Sep 199579256816.18$12,815
Aug 19951,3362,71915.92$21,269
Jul 19959912,55715.24$15,103
Jun 19950016.41$0
May 19950017.56$0
Apr 19950017.73$0
Mar 19950016.44$0
Feb 19950016.58$0
Jan 19950015.92$0
Dec 19940015.03$0
Nov 19940015.90$0
Oct 19940015.58$0
Sep 1994683515.29$1,040
Aug 199493329716.13$15,049
Jul 19941,0282,14117.56$18,052
Jun 199486126817.09$14,714
May 199489371915.88$14,181
Apr 19949841,16414.14$13,914
Mar 199490667212.46$11,289
Feb 19947772,71612.50$9,713
Jan 19941,3863,69612.66$17,547
Dec 19931,1034,50312.33$13,600
Nov 19931,4661,29514.49$21,242
Oct 19931,44421015.85$22,887
Sep 19931,2441,64315.03$18,697
Aug 19931,3361,61315.66$20,922
Jul 19931,2511,83615.46$19,340
Jun 199399780816.79$16,740
May 19931,38054917.68$24,398
Apr 19931,56017518.05$28,158
Mar 19931,5561,11418.14$28,226
Feb 19931,5162,05017.90$27,136
Jan 19931,5751,77016.93$26,665

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.

Aug 2004 — as filed, then multipliedworked
Oil                  182 bbl  × $ 42.37 =     $7,711
Casinghead gas       280 Mcf  × $  5.55 =     $1,554

────────────────────────────────────────────────────
Month total                                   $9,266

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. 04/O/8976 is the state's own key, not one this site invented.