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GUAJILLO UNIT 8 SOUTH

Operated by MARATHON OIL EF LLC (P-5 525398) in the EAGLEVILLE (EAGLE FORD-1) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 19278District 01Field 27135700Hydrogen sulphide fieldOilCasinghead gasSaveExport
Value, all time
$101.7 M
Dec 2017 – May 2026
Value, last 12 filed months
$1.9 M
at the published price for each month
Months reported
102
no gaps in the span
Streams
2
oil, casinghead gas

The EAGLEVILLE (EAGLE FORD-1) field

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 5,086 leases and 10,995 wells, and the rule below applies to all of them.

Discovered
2009-08-12
as the register files it
Field class
Oil and gas
the register's own label
Between wells
0 ft
minimum
From a lease line
330 ft
minimum

A drilling unit in this field needs at least 40 acres. The field rule took effect on 2017-02-28.

The register flags this field for hydrogen sulphide. That is a poisonous gas that occurs naturally in some formations. The flag is a property of the field as the Commission records it. It is not a measurement taken at this lease, and it is not a statement that gas is escaping anywhere.

The Commission's schedule remark for this field reads: “BASED ON 3000 TO 1 GAS OIL RATIO”

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
OilDisposition1,499,923 bbl$92,236,778
Casinghead gasProduction2,952,888 Mcf$9,459,043
Total$101,695,821

Wells on this lease (5)

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 28.6468, -98.2635. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.2 miles.

28.64677, -98.26345 · 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 5 wells
With a plug date
0.0%
0 of 5 wells
Median depth
11,464 ft
5 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.
5100.0%

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 11,422 and 11,481 ft, median 11,464 ft, over the 5 wells that filed a depth.

Completions filed
Dec 2017
5 of 5 wells

5 wells

42-013354132H11,422 ftDec 2017——
42-013354141H11,477 ftDec 2017——
42-013354153H11,464 ftDec 2017——
42-013354164H11,429 ftDec 2017——
42-013354175H11,481 ftDec 2017——

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 (102)

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

102 months

May 20261,9212,643106.413.05$212,464
Apr 20263,6473,47198.932.87$370,759
Mar 20261,4002,54289.753.15$133,656
Feb 20262,0971,78163.503.75$139,839
Jan 20261,6412,69059.138.00$118,547
Dec 20251,5862,82956.664.41$102,348
Nov 20259991,71858.593.93$65,277
Oct 20251,5522,56659.383.30$100,638
Sep 20251,6072,12262.743.08$107,352
Aug 20252,7212,79863.933.01$182,389
Jul 20252,1305,79966.743.32$161,381
Jun 20252,2784,73666.483.13$166,259
May 20252,7704,70060.553.23$182,915
Apr 20252,3475,38962.363.54$165,453
Mar 20253,0567,57067.704.27$239,202
Feb 20252,6756,59070.884.34$218,210
Jan 20253,0367,47074.324.28$257,597
Dec 20243,0166,75268.993.12$229,149
Nov 20242,7665,99969.052.20$204,181
Oct 20243,2979,31571.372.28$256,558
Sep 20242,8688,65069.612.36$220,093
Aug 20242,9756,86275.632.06$239,160
Jul 20242,88710,90779.932.15$254,171
Jun 20242,7998,12578.082.63$239,947
May 20243,93111,95578.812.20$336,084
Apr 20243,4917,04984.451.66$306,511
Mar 20243,4538,18780.301.55$289,926
Feb 20244,4189,63176.091.78$353,344
Jan 20243,7447,88073.023.30$299,372
Dec 20233,96210,22271.262.61$309,019
Nov 20233,03510,50277.892.81$265,881
Oct 20233,99110,66385.443.09$373,911
Sep 20233,0758,80789.042.74$297,886
Aug 20233,58010,49980.522.67$316,324
Jul 20234,5169,97274.852.64$364,367
Jun 20234,66711,54068.962.26$347,899
May 20234,44812,53270.622.23$342,032
Apr 20234,40812,42678.122.24$372,159
Mar 20234,72713,27672.852.39$376,134
Feb 20233,66310,31775.112.47$300,566
Jan 20234,06911,84376.533.39$351,521
Dec 20224,82015,29276.415.73$455,905
Nov 20225,02610,69985.005.65$487,619
Oct 20224,76213,42287.185.86$493,855
Sep 20224,22016,30284.888.16$491,278
Aug 20224,4069,61794.529.13$504,231
Jul 20224,38110,573101.587.54$524,764
Jun 20225,47114,102115.097.98$742,152
May 20225,59913,696109.378.43$727,862
Apr 20225,12510,971104.226.84$609,143
Mar 20225,79711,264108.885.08$688,358
Feb 20224,43911,43691.054.86$459,737
Jan 20226,40316,29081.844.54$597,940
Dec 20215,70315,16371.323.90$465,860
Nov 20215,39912,79977.435.24$485,071
Oct 20216,55713,29279.795.71$599,132
Sep 20216,37212,38269.865.35$511,403
Aug 20216,76114,60666.024.22$508,007
Jul 20217,52918,44670.783.98$606,356
Jun 20216,61615,35669.493.38$511,659
May 20217,53918,69263.483.02$534,982
Apr 20217,58717,79960.362.76$507,048
Mar 20218,57519,03461.302.72$577,362
Feb 20216,65215,99057.805.55$473,197
Jan 20217,35917,20250.412.81$419,309
Dec 20207,91420,69944.642.68$408,660
Nov 20208,65922,46238.772.71$396,504
Oct 20208,98019,05536.972.48$379,217
Sep 20208,43820,99337.091.99$354,763
Aug 20209,39420,93239.982.39$425,497
Jul 20209,39920,40638.371.83$397,883
Jun 20209,37220,40434.901.69$361,572
May 20208,95623,32316.921.81$193,861
Apr 20209,40123,59714.751.80$181,243
Mar 202010,14124,56830.341.86$353,282
Feb 202011,25127,34749.881.98$615,365
Jan 202011,62525,57457.252.09$719,102
Dec 201911,07627,92259.012.30$717,937
Nov 201910,32524,66955.302.75$638,830
Oct 201911,95630,31853.472.42$712,613
Sep 201910,72628,24355.052.66$665,516
Aug 201914,18735,02653.112.30$834,184
Jul 201915,34034,56356.272.46$948,209
Jun 201915,51836,08052.782.49$908,923
May 201917,51039,52058.482.74$1,132,282
Apr 201917,60045,60562.632.75$1,227,734
Mar 201920,28743,91056.803.06$1,286,758
Feb 201919,89644,06450.852.79$1,134,748
Jan 201924,77352,81146.033.23$1,310,785
Dec 201826,30159,67346.594.19$1,475,121
Nov 201827,43461,22052.934.24$1,711,485
Oct 201833,94573,06061.443.40$2,333,845
Sep 201836,70782,99359.543.11$2,443,477
Aug 201843,111100,40359.403.07$2,868,685
Jul 201842,67598,49965.142.93$3,068,637
Jun 201856,505132,48360.183.08$3,808,110
May 201878,371185,78065.382.90$5,662,807
Apr 201893,586176,08963.842.90$6,485,329
Mar 2018115,389169,11561.222.79$7,535,411
Feb 2018154,152203,08961.782.77$10,085,279
Jan 2018201,417234,69862.874.01$13,604,066
Dec 201719,25917,94557.272.92$1,155,390

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                1,921 bbl  × $106.41 =   $204,414
Casinghead gas     2,643 Mcf  × $  3.05 =     $8,050

────────────────────────────────────────────────────
Month total                                 $212,464

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. 01/O/19278 is the state's own key, not one this site invented.