WELLS · TEXAS · ONE ROW PER API NUMBER

Marathon Oil EF LLC wells

Every well on the Railroad Commission's schedule or with a drilling permit on file, newest permit first: who operates it, where it is, the field it is completed in, its permits, and the last month its lease reported.What an API number is →

A full API number opens the well. Anything else filters the list below.

1,057 wells match

Well logs are the ones loaded into Petrora from the regulators' log indexes. A log's kind is the regulator's description of it; a digital log is a LAS file of curves. Each well's page lists its logs and links to the regulator for the files.

Texas reports production by lease, so a well carries no volumes of its own: "Last reported" is the last month the lease it is tied to reported. How Texas production is reported →

1,057 WELLS · PAGE 1 OF 22

These wells on a map →
WellOperatorCounty, fieldStatusDepth, ftPermitPermitsLast reported
Sprencel-Peck Unit #3HHZ42-255-33515Marathon Oil EF LLCKarnesEagleville (Eagle Ford-2)ActiveOil11,428Oct 8, 20262Aug 2026
Frank Malek 05 #07HHZ42-297-36358Marathon Oil EF LLCLive OakSugarkane (Eagle Ford)ActiveGas13,042May 30, 20232Aug 2026
Frank Malek 05 #08HHZ42-297-36359Marathon Oil EF LLCLive OakSugarkane (Eagle Ford)ActiveGas12,935May 30, 20231Aug 2026
Smith Mellick-Scheele-B.huth SA #6HHZ42-255-37127Marathon Oil EF LLCKarnesEagleville (Eagle Ford-2)ActiveOil11,522Apr 20, 20232Aug 2026
Kirk 01 #502HHZ42-255-37763Marathon Oil EF LLCKarnesSugarkane (Eagle Ford)ActiveGas13,560Apr 6, 20232Aug 2026
Hemby Unit B #5HHZ42-255-37739Marathon Oil EF LLCKarnesEagleville (Eagle Ford-2)ActiveGas12,885Mar 14, 20231Aug 2026
SCR Unit E-Mobil Unit B SA #1HHZ42-255-37726Marathon Oil EF LLCKarnesSugarkane (Eagle Ford)ActiveGas12,204Feb 24, 20231Aug 2026
Coy City Ranch Unit B #3HHZ42-255-37696Marathon Oil EF LLCKarnesEagleville (Eagle Ford-2)ActiveOil11,484Jan 27, 20231Aug 2026
B.dupnik-V.foegelle-F.541 B SA #1HHZ42-255-37682Marathon Oil EF LLCKarnesEagleville (Eagle Ford-2)ActiveOil11,756Jan 24, 20231Aug 2026
Holland-Opiela Unit #3HHZ42-255-37688Marathon Oil EF LLCKarnesEagleville (Eagle Ford-2)ActiveOil11,753Jan 23, 20231Aug 2026
Vajdos-Foegelle Unit #4HHZ42-255-37677Marathon Oil EF LLCKarnesEagleville (Eagle Ford-2)ActiveOil11,716Jan 20, 20231Aug 2026
Hedtke-Henke Unit #4HHZ42-255-37674Marathon Oil EF LLCKarnesEagleville (Eagle Ford-2)ActiveOil11,715Jan 19, 20231Aug 2026
Mauch Tom Krueger-Ethridge SA #1HHZ42-013-35977Marathon Oil EF LLCAtascosaEagleville (Eagle Ford-1)ActiveOil11,313Dec 20, 20222Aug 2026
Middle McCowen #116HHZ42-013-35950Marathon Oil EF LLCAtascosaEagleville (Eagle Ford-1)ActiveOil10,743Nov 16, 20221Aug 2026
Sager 01-Duderstadt 01 SA2 #02HHZ42-123-35230Marathon Oil EF LLCDe WittDe Witt (Eagle Ford Shale)ActiveGas13,956Oct 3, 20222Aug 2026
Mangione 01 #18HHZ42-255-37557Marathon Oil EF LLCKarnesSugarkane (Eagle Ford)ActiveGas12,980Sep 6, 20221Aug 2026
Three Sisters 01 #67HHZ42-297-36276Marathon Oil EF LLCLive OakSugarkane (Eagle Ford)ActiveGas13,070Jul 21, 20221Aug 2026
Three Sisters 01 #68HHZ42-297-36277Marathon Oil EF LLCLive OakSugarkane (Eagle Ford)ActiveGas13,058Jul 21, 20221Aug 2026
Three Sisters 01 #69HHZ42-297-36278Marathon Oil EF LLCLive OakSugarkane (Eagle Ford)ActiveGas13,080Jul 21, 20221Aug 2026
Three Sisters 01 #70HHZ42-297-36279Marathon Oil EF LLCLive OakSugarkane (Eagle Ford)ActiveGas13,098Jul 21, 20221Aug 2026
Three Sisters 01 - WK01 a #01HHZ42-297-36231Marathon Oil EF LLCLive OakSugarkane (Eagle Ford)ActiveGas12,900Apr 14, 20221Aug 2026
Egbert Unit #503HHZ42-255-37416Marathon Oil EF LLCKarnesEagleville (Eagle Ford-2)ActiveOil11,866Apr 4, 20221Aug 2026
Maurer-McFarland Unit #2HHZ42-255-37446Marathon Oil EF LLCKarnesEagleville (Eagle Ford-2)ActiveOil10,781Mar 29, 20221Aug 2026
Egbert Unit #501HHZ42-255-37414Marathon Oil EF LLCKarnesEagleville (Eagle Ford-2)ActiveOil11,784Feb 28, 20221Aug 2026
Egbert Unit #502HHZ42-255-37415Marathon Oil EF LLCKarnesEagleville (Eagle Ford-2)ActiveOil11,842Feb 28, 20221Aug 2026
Oxford-Witte Unit #3HHZ42-255-37418Marathon Oil EF LLCKarnesEagleville (Eagle Ford-2)ActiveOil11,424Feb 28, 20221Aug 2026
Oxford-Witte Unit #4HHZ42-255-37419Marathon Oil EF LLCKarnesEagleville (Eagle Ford-2)ActiveOil11,477Feb 28, 20221Aug 2026
Oxford Witte-Creel Mixon SA #1HHZ42-255-37420Marathon Oil EF LLCKarnesEagleville (Eagle Ford-2)ActiveOil11,466Feb 28, 20221Aug 2026
Frank Malek 01 #02HHZ42-297-36220Marathon Oil EF LLCLive OakSugarkane (Eagle Ford)ActiveGas12,772Feb 23, 20221Aug 2026
Frank Malek 01 #03HHZ42-297-36221Marathon Oil EF LLCLive OakSugarkane (Eagle Ford)ActiveGas12,822Feb 23, 20221Aug 2026
74 Ranch-Guajillo Unit C #1HHZ42-013-35890Marathon Oil EF LLCAtascosaEagleville (Eagle Ford-1)ActiveOil10,928Feb 3, 20222Aug 2026
74 Ranch-Guajillo Unit C #2HHZ42-013-35891Marathon Oil EF LLCAtascosaEagleville (Eagle Ford-1)ActiveOil10,967Feb 3, 20222Aug 2026
74 Ranch-Guajillo Unit C #3HHZ42-013-35892Marathon Oil EF LLCAtascosaEagleville (Eagle Ford-1)ActiveOil10,922Feb 3, 20222Aug 2026
74 Ranch-Guajillo Unit C #4HHZ42-013-35893Marathon Oil EF LLCAtascosaEagleville (Eagle Ford-1)ActiveOil10,953Feb 3, 20222Aug 2026
74 Ranch-Guajillo Unit C #5HHZ42-013-35894Marathon Oil EF LLCAtascosaEagleville (Eagle Ford-1)ActiveOil10,932Feb 3, 20222Aug 2026
74 Ranch-Guajillo Unit D #1HHZ42-013-35886Marathon Oil EF LLCAtascosaEagleville (Eagle Ford-1)ActiveOil10,937Feb 1, 20221Aug 2026
74 Ranch-Guajillo Unit D #4HHZ42-013-35889Marathon Oil EF LLCAtascosaEagleville (Eagle Ford-1)ActiveOil10,952Feb 1, 20221Aug 2026
74 Ranch Unit S2 #1HHZ42-013-35875Marathon Oil EF LLCAtascosaEagleville (Eagle Ford-1)ActiveOil10,352Jan 31, 20221Aug 2026
74 Ranch Unit S2 #2HHZ42-013-35876Marathon Oil EF LLCAtascosaEagleville (Eagle Ford-1)ActiveOil10,370Jan 31, 20221Aug 2026
74 Ranch Unit S2 #5HHZ42-013-35879Marathon Oil EF LLCAtascosaEagleville (Eagle Ford-1)ActiveOil10,339Jan 31, 20221Aug 2026
74 Ranch Unit S3 #1HHZ42-013-35880Marathon Oil EF LLCAtascosaEagleville (Eagle Ford-1)ActiveOil10,345Jan 31, 20221Aug 2026
74 Ranch Unit S3 #5HHZ42-013-35884Marathon Oil EF LLCAtascosaEagleville (Eagle Ford-1)ActiveOil10,356Jan 31, 20221Aug 2026
74 Ranch Unit S3 #6HHZ42-013-35885Marathon Oil EF LLCAtascosaEagleville (Eagle Ford-1)ActiveOil10,323Jan 31, 20221Aug 2026
74 Ranch-Guajillo Unit D #2HHZ42-013-35887Marathon Oil EF LLCAtascosaEagleville (Eagle Ford-1)ActiveOil10,947Jan 31, 20221Aug 2026
74 Ranch-Guajillo Unit D #3HHZ42-013-35888Marathon Oil EF LLCAtascosaEagleville (Eagle Ford-1)ActiveOil10,892Jan 31, 20221Aug 2026
74 Ranch Unit S2 #4HHZ42-013-35878Marathon Oil EF LLCAtascosaEagleville (Eagle Ford-1)ActiveOil10,363Jan 28, 20221Aug 2026
74 Ranch Unit S3 #2HHZ42-013-35881Marathon Oil EF LLCAtascosaEagleville (Eagle Ford-1)ActiveOil10,318Jan 28, 20221Aug 2026
74 Ranch Unit S3 #3HHZ42-013-35882Marathon Oil EF LLCAtascosaEagleville (Eagle Ford-1)ActiveOil10,355Jan 28, 20221Aug 2026
74 Ranch Unit S2 #3HHZ42-013-35877Marathon Oil EF LLCAtascosaEagleville (Eagle Ford-1)ActiveOil10,349Jan 27, 20221Aug 2026
Turnbull F-Imperial-Kowalik SA #1HHZ42-255-37368Marathon Oil EF LLCKarnesEagleville (Eagle Ford-2)ActiveGas11,842Dec 20, 20211Aug 2026

About this data

One row per API number: every well on the Railroad Commission wellbore schedule, and every API number a drilling permit names. Operator, field, status, and dates are the schedule's where it lists the well, the latest permit's otherwise. Permits on file counts every permit and amendment. Texas reports production by lease, so a well shows the last month its lease reported and no volumes. Nothing is estimated.

Developers: this page as JSON is GET /v1/data/wells?state=tx, documented in the API reference.