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.

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 →

3,373 WELLS · PAGE 1 OF 68

These wells on a map →
WellOperatorCounty, fieldStatusDepth, ftPermitPermitsLast reported
Rodriguez-Medina SA a #1HZ42-255-38486Marathon Oil EF LLC KarnesPermitted17,500Oct 30, 20261—
Rodriguez-Medina SA B #1HZ42-255-38487Marathon Oil EF LLC KarnesPermitted17,500Oct 27, 20261—
Rodriguez-Medina SA C #1HZ42-255-38488Marathon Oil EF LLC KarnesPermitted17,500Oct 27, 20261—
Sprencel-Peck Unit #3HHZ42-255-33515Marathon Oil EF LLC KarnesEagleville (Eagle Ford-2)ActiveOil17,600Oct 8, 20262Jul 2026
Haus Quad SA a #1HZ42-255-38459Marathon Oil EF LLC KarnesPermitted17,500Oct 1, 20261—
Haus-Jau-Chris SA B #1HZ42-255-38460Marathon Oil EF LLC KarnesPermitted17,500Oct 1, 20261—
Whitsett-Taylor-Mass SA a #1HZ42-297-36599Marathon Oil EF LLC Live OakPermitted17,500Sep 21, 20262—
Whitsett-Taylor-Mass SA B #1HZ42-297-36600Marathon Oil EF LLC Live OakPermitted17,500Sep 21, 20262—
Whitsett-Taylor-Mass SA D #1HZ42-297-36601Marathon Oil EF LLC Live OakPermitted17,500Sep 21, 20262—
Whitsett-Taylor-Mass SA C #1HZ42-297-36602Marathon Oil EF LLC Live OakPermitted17,500Sep 21, 20262—
Haus-Chris SA C #1HZ42-255-38461Marathon Oil EF LLC KarnesPermitted17,500Sep 10, 20261—
Haus-Chris SA D #1HZ42-255-38462Marathon Oil EF LLC KarnesPermitted17,500Sep 10, 20261—
Barnhart (EF) #7HHZ42-177-32494Marathon Oil EF LLC GonzalesEagleville (Eagle Ford-1)Shut inOil14,800Sep 1, 20262Jul 2026
Barnhart (Ef)-HFS SA10 #140HHZ42-177-34850Marathon Oil EF LLC GonzalesPermitted17,500Jul 21, 20261—
Barnhart (EF) #205HHZ42-177-34846Marathon Oil EF LLC GonzalesPermitted17,500Jul 16, 20261—
Barnhart (EF) #206HHZ42-177-34847Marathon Oil EF LLC GonzalesPermitted17,500Jul 16, 20261—
Barnhart (EF) #207HHZ42-177-34848Marathon Oil EF LLC GonzalesDrilled17,500Jul 16, 20262—
Schorlemer Quad SA a #1HZ42-123-35787Marathon Oil EF LLC DE WittPermitted17,500Jul 1, 20261—
Hope-Dwor-Saun B SA a #1HZ42-123-35793Marathon Oil EF LLC DE WittNot on schedule17,500Jun 30, 20263—
Hope-Saunders B SA a #1HZ42-123-35788Marathon Oil EF LLC DE WittNot on schedule17,500Jun 29, 20261—
Hope-Saunders B SA B #1HZ42-123-35789Marathon Oil EF LLC DE WittNot on schedule17,500Jun 29, 20261—
Hope-Saunders B SA C #1HZ42-123-35790Marathon Oil EF LLC DE WittNot on schedule17,500Jun 29, 20261—
Hope-Saunders B SA D #1HZ42-123-35791Marathon Oil EF LLC DE WittNot on schedule17,500Jun 29, 20262—
Hope-Saunders B SA E #1HZ42-123-35792Marathon Oil EF LLC DE WittNot on schedule17,500Jun 29, 20261—
Barnhart (Ef)-JM Pres SA #512HHZ42-177-34842Marathon Oil EF LLC GonzalesNot on schedule17,500Jun 25, 20261—
Barnhart (EF) K-JM Pres SA #511HHZ42-177-34843Marathon Oil EF LLC GonzalesNot on schedule17,500Jun 24, 20261—
Choate 01 #15HHZ42-255-38423Marathon Oil EF LLC KarnesNot on schedule17,500Jun 18, 20261—
Dull-Hand-Cho SA a #1HZ42-255-38424Marathon Oil EF LLC KarnesNot on schedule17,500Jun 18, 20261—
Schorlemer-Char SA a #1HZ42-123-35785Marathon Oil EF LLC DE WittNot on schedule17,500Jun 15, 20261—
Weston-West-PMT SA a #1HZ42-255-38405Marathon Oil EF LLC KarnesNot on schedule17,500Jun 9, 20262—
Weston-West-PMT SA B #1HZ42-255-38406Marathon Oil EF LLC KarnesNot on schedule17,500Jun 9, 20261—
Weston-PMT SA C #1HZ42-255-38407Marathon Oil EF LLC KarnesNot on schedule17,500Jun 9, 20261—
Weston-PMT SA D #1HZ42-255-38408Marathon Oil EF LLC KarnesNot on schedule17,500Jun 9, 20261—
Weston-PMT SA E #1HZ42-255-38409Marathon Oil EF LLC KarnesNot on schedule17,500Jun 9, 20261—
Foushee-Wright Keathley SA5 #5HHZ42-013-36274Marathon Oil EF LLC AtascosaNot on schedule17,500May 6, 20262—
Foushee-Wright Keathley SA6 #6HHZ42-013-36275Marathon Oil EF LLC AtascosaNot on schedule17,500May 6, 20262—
Mauch-Wright Henke SA1 #1HHZ42-013-36272Marathon Oil EF LLC AtascosaNot on schedule17,500May 4, 20262—
Mauch-Wright Henke SA2 #2HHZ42-013-36273Marathon Oil EF LLC AtascosaNot on schedule17,500May 4, 20262—
Martinez-Henke SA a #1HZ42-255-38387Marathon Oil EF LLC KarnesNot on schedule17,500Apr 23, 20261—
Martinez Unit #3HZ42-255-38384Marathon Oil EF LLC KarnesNot on schedule17,500Apr 21, 20261—
Martinez-Henke Unit #4HZ42-255-38385Marathon Oil EF LLC KarnesNot on schedule17,500Apr 21, 20261—
Hemb-Black-Levi SA a #1HZ42-255-38369Marathon Oil EF LLC KarnesNot on schedule17,500Apr 2, 20261—
Hemb-Black-Levi SA B #1HZ42-255-38370Marathon Oil EF LLC KarnesNot on schedule17,500Apr 2, 20261—
Kirk-Debill SA1 #505HHZ42-255-38354Marathon Oil EF LLC KarnesNot on schedule17,500Mar 17, 20261—
Mueller-Warner SA1 #1HHZ42-255-38365Marathon Oil EF LLC KarnesNot on schedule17,500Mar 11, 20261—
Mueller-Warner SA2 #501HHZ42-255-38366Marathon Oil EF LLC KarnesNot on schedule17,500Mar 11, 20261—
Mueller-Warner SA3 #3HHZ42-255-38367Marathon Oil EF LLC KarnesNot on schedule17,500Mar 11, 20261—
Hierholzer Quad SA B #1HZ42-255-38368Marathon Oil EF LLC KarnesNot on schedule17,500Feb 26, 20261—
Kirk-Debill SA4 #4HHZ42-255-38355Marathon Oil EF LLC KarnesNot on schedule17,500Feb 17, 20261—
Kirk-Debill SA2 #2HHZ42-255-38356Marathon Oil EF LLC KarnesNot on schedule17,500Feb 17, 20261—

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.