Texas oil lease

Producing

GRIFFIN-KRUEGER SA4

Name: GRIFFIN-KRUEGER SA4 monthly oil and gas production, Atascosa County, Texas
Creator: Texas Railroad Commission

Griffin-Krueger Sa4 is an oil lease in Atascosa County, Texas, operated by Marathon Oil Ef LLC in the Eagleville (Eagle Ford-1) field.

1 well

182,123bbl oil, since Jan 2026

Operator: Marathon Oil Ef LLC
County: Atascosa County
Field: Eagleville (Eagle Ford-1)
RRC lease: 01-21866

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Where it sits

This county

Atascosa County

Gas, since Jan 2026: 202,012 mcf
Oil in Jul 2026: 17,076 bbl

First check

Production started January 2026; the first check is due by about May 31, 2026 (estimate).

When is my first royalty check due?

Production by month

Oil output fell 53% since Jan 2026

Oil (bars)
Gas (line)

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

88% of the gas went to a processing plant in the 7 months reported

Processing plant (3)
Lease fuel (1)
Flared (4)

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Processing plant (3)
88% · 178,160 mcf
Lease fuel (1)
11% · 22,813 mcf
Flared (4)
0.5% · 1,039 mcf

0.5% of the gas flared in the 7 months reported. No month above 3%.

1 well on this lease

Wells on GRIFFIN-KRUEGER SA4
API number	Well no.	Status
42-013-36233	4H	Active

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
Company	Product	Role	Share%	From
Statewide Crude Inc.	Oil	Gathers	90	Aug 8, 2025
Gulfmark Energy, Inc.	Oil	Gathers	10	Aug 8, 2025
Marathon Oil Ef LLC	Casinghead gas	Buys	100	Aug 8, 2025
Marathon Oil Ef LLC	Casinghead gas	Gathers	100	Aug 8, 2025

SourceRailroad Commission Form P-4 file, Sep 24, 2026 (source).

Who buys my oil Oil price check

1,091.15 acres on the newest permit

Worth asking
A production sharing agreement well is on this lease
A production sharing agreement divides production by a method the agreement sets. Ask the operator for the agreement and the tract percentage it gives your land.

Check your decimal on this lease

Permits for Griffin-Krueger Sa4
API number	Well no.	Permit issued	Completed	Acreson the permit	Type
42-013-36233	4H	Apr 24, 2025	Aug 8, 2025	1,091.15	Horizontal, PSA

SourceRailroad Commission drilling permits, Oct 3, 2026 (source 1, source 2).

Unit decimal checker

What ConocoPhillips told investors it received

Marathon Oil Ef LLC is linked to ConocoPhillips (MRO).

Realized prices reported by ConocoPhillips
Quarter	Oil$ per bbl	Gas$ per mcf	Gas liquids$ per bbl	Filing
Q2 2026	$99.40	$2.58	$24.54	SEC filing
Q1 2026	$73.47	$4.09	$20.42	SEC filing
Q3 2025	$66.13	$4.28	$19.20	SEC filing
Q2 2025	$64.23	$4.16	$20.98	SEC filing
Q1 2025	$71.65	$5.62	$25.40	SEC filing

SourceConocoPhillips quarterly reports, SEC EDGAR, company-wide averages before hedging.

Estimate your royalty

7 months, newest first

Ledger for GRIFFIN-KRUEGER SA4
Month	Oil producedbbl	Oil soldbbl	Gas producedmcf	Gas soldmcf, codes 2+3	Flaredmcf	WTI$/bbl	Henry Hub$/MMBtu
Jul 2026	17,076	16,991	24,077	20,307	203	$80.46	$2.89
Jun 2026	18,290	18,294	24,529	20,689	90	$84.81	$3.15
May 2026	17,294	17,339	20,010	16,452	171	$102.13	$2.94
Apr 2026	17,663	17,715	21,023	18,821	81	$100.32	$2.77
Mar 2026	26,971	27,273	30,303	27,478	123	$91.38	$3.04
Feb 2026	33,815	33,570	36,581	32,862	200	$64.51	$3.62
Jan 2026	51,014	50,647	45,489	41,551	171	$60.04	$7.72

SourceTexas Railroad Commission Production Data Query, through Jul 2026. Prices: EIA, through Aug 2026. Updated Oct 2, 2026.

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