WELL LOGS · UNITED STATES · ONE ROW PER LOG
Well logs within 2 mi of API 42-013-34331
Well logs loaded into Petrora from the regulators' log indexes, newest received first: what each measures, whether it is a digital LAS file or an image, the interval filed for it, and the formations it spans by the well's own tops. Loaded so far for Texas; more states and data sources will follow. Petrora lists these logs; each well's page links to the regulator for the files.
Distances are to the nearest location on file for each well (a horizontal has several along its path), in miles. Locations are surface and path points as mapped, not bottom-hole surveys.
37 LOG FILES ON 17 WELLS · A LOG'S LAS AND IMAGE IN ONE ROW · PAGE 1 OF 1
| Well | Distancemi | Logas described | Intervalft, as filed | Datereceived |
|---|---|---|---|---|
| Middle McCowen #173HHZ42-013-35782Atascosa, TX · Marathon Oil EF LLC | 0.90 | Gamma RayTIFF | 112 to 4,654 | Nov 29, 2023 |
| Middle McCowen #173HHZ42-013-35782Atascosa, TX · Marathon Oil EF LLC | 0.90 | Gamma RayTIFF | 112 to 18,136 | Mar 16, 2023 |
| Middle McCowen #172HHZ42-013-35781Atascosa, TX · Marathon Oil EF LLC | 0.91 | Gamma RayTIFF | 0 to 15,352 | Nov 29, 2023 |
| Middle McCowen #172HHZ42-013-35781Atascosa, TX · Marathon Oil EF LLC | 0.91 | Measure While Drilling (MWD)TIFF | 4,644 to 18,322 | Mar 30, 2023 |
| Middle McCowen #171HHZ42-013-35780Atascosa, TX · Marathon Oil EF LLC | 0.91 | Gamma RayTIFF | 110 to 19,939 | Nov 29, 2023 |
| Middle McCowen #171HHZ42-013-35780Atascosa, TX · Marathon Oil EF LLC | 0.91 | Measure While Drilling (MWD)TIFF | 4,646 to 19,939 | Mar 30, 2023 |
| Middle McCowen #29HHZ42-013-34518Atascosa, TX · Marathon Oil EF LLC | 1.00 | RESISTIVITY4 TIFF | 6,775 to 16,355 | Sep 3, 2015run Jul 26, 2012 |
| Middle McCowen #124HHZ42-013-35957Atascosa, TX · Marathon Oil EF LLC | 1.15 | Gamma RayTIFF | 0 to 18,931 | Jan 21, 2026 |
| Middle McCowen #123HHZ42-013-35956Atascosa, TX · Marathon Oil EF LLC | 1.15 | Gamma RayTIFF | 0 to 18,873 | Jan 21, 2026 |
| Middle McCowen #122HHZ42-013-35955Atascosa, TX · Marathon Oil EF LLC | 1.16 | Gamma RayTIFF | 0 to 18,670 | Dec 23, 2025 |
| Middle McCowen #120HHZ42-013-35954Atascosa, TX · Marathon Oil EF LLC | 1.16 | Gamma RayTIFF | 0 to 18,635 | Dec 23, 2025 |
| Middle McCowen #119HHZ42-013-35953Atascosa, TX · Marathon Oil EF LLC | 1.61 | Gamma RayTIFF | 0 to 18,774 | Nov 25, 2025 |
| Middle McCowen #118HHZ42-013-35952Atascosa, TX · Marathon Oil EF LLC | 1.61 | Gamma RayTIFF | 0 to 18,768 | Nov 25, 2025 |
| Middle McCowen #117HHZ42-013-35951Atascosa, TX · Marathon Oil EF LLC | 1.62 | Gamma RayTIFF | 0 to 18,639 | Nov 25, 2025 |
| Middle McCowen #116HHZ42-013-35950Atascosa, TX · Marathon Oil EF LLC | 1.62 | Gamma RayLAS | 0 to 18,711 | Mar 25, 2026 |
| Middle McCowen #116HHZ42-013-35950Atascosa, TX · Marathon Oil EF LLC | 1.62 | Gamma RayTIFF | 0 to 18,711 | Dec 23, 2025 |
| Middle McCowen #115HHZ42-013-35949Atascosa, TX · Marathon Oil EF LLC | 1.63 | Gamma RayTIFF | 0 to 18,709 | Nov 25, 2025 |
| Middle McCowen #8HHZ42-013-34480Atascosa, TX · Marathon Oil EF LLC | 1.92 | RESISTIVITY5 TIFF | 5,060 to 16,860 | Aug 18, 2015run Jun 13, 2012 |
| Middle McCowen #7HHZ42-013-34478Atascosa, TX · Marathon Oil EF LLC | 1.94 | Gamma RayLAS + TIFF | 5,100 to 16,940 | Nov 14, 2017 |
| Middle McCowen #6HHZ42-013-34477Atascosa, TX · Marathon Oil EF LLC | 1.95 | RESISTIVITY3 TIFF | 5,483 to 16,956 | Sep 3, 2015run Mar 31, 2012 |
| Middle McCowen #6HHZ42-013-34477Atascosa, TX · Marathon Oil EF LLC | 1.95 | RESISTIVITY2 TIFF | 5,483 to 16,956 | Mar 8, 2016run Mar 23, 2012 |
| Middle McCowen #6HHZ42-013-34477Atascosa, TX · Marathon Oil EF LLC | 1.95 | RESISTIVITYTIFF | 5,483 to 16,956 | Mar 29, 2016run Mar 31, 2012 |
| Middle McCowen #5HHZ42-013-34476Atascosa, TX · Marathon Oil EF LLC | 1.97 | RESISTIVITY2 TIFF | 5,130 to 17,043 | Oct 7, 2015run Apr 20, 2012 |
| Middle McCowen #5HHZ42-013-34476Atascosa, TX · Marathon Oil EF LLC | 1.97 | RESISTIVITY2 TIFF | 5,160 to 17,043 | Oct 7, 2015run Apr 20, 2012 |
About this data
Well logs loaded into Petrora from the regulators' log indexes, so far for Texas, with more states and data sources to follow; not necessarily every log that exists. These are the logs loaded into Petrora from the Railroad Commission's inventories, not necessarily every log run on the well. The RRC holds the files; each opens from its log search for the well. The kind is the RRC's description of the log; the interval is the one filed for it. A formation is spanned where the log's filed interval overlaps it in the well's own formation tops; both are measured depths as filed, so a horizontal's lateral is counted in the formation it ends in. Kinds are read from the regulator's description of each log, not from its curves. The date is when the log entered the RRC's imaged log database; a run date is shown where the index gives a different one (mostly logs before 2017: since digital filing began that year, the index gives the filing date for both). Nothing is estimated.
Developers: this page as JSON is GET /v1/data/logs, documented in the API reference.