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2 wells, subsea datum

West to east, 1.0 miles end to end. Depths are elevation minus measured depth, so tops line up regardless of surface terrain; a value above zero sits above sea level. Each formation filed in more than one well has its own color, joined between neighboring wells and shaded down to the next formation both filed; nothing is interpolated. Where tops come from →

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-0-2,000-4,000-6,000-8,000-10,000SUBSEA FTA453 FT ELB428 FT ELQueen CityQueen CityReklawReklawCarrizoCarrizoWilcoxWilcoxAnacachoAnacachoAustin ChalkAustin Chalk

shaded: a formation down to the next one filed in both wellsfiled in one well onlyhover a top or a name to pick out one formation

Tops by well

Subsea feet, with measured depth beneath; a dash where the well has no top filed for the formation.

FormationAHierholzer Retzloff-McMahon SA3BDeatley Hollub May SA 2
Queen City-2,325MD 2,778-2,131MD 2,559
Reklaw-2,923MD 3,376-3,055MD 3,483
Bartosh—-3,163MD 3,591
Carrizo-3,630MD 4,083-3,513MD 3,941
Wilcox-3,749MD 4,202-4,929MD 5,357
Navarro—-8,278MD 8,706
Olmos—-8,699MD 9,127
Anacacho-9,785MD 10,238-9,969MD 10,397
Austin Chalk-9,914MD 10,367-10,109MD 10,537

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Only wells with a location on file can be found by distance; a well with tops but no location can still be added by name or API number.

The tops, as filed

Marathon Oil EF LLC · Atascosa · 453 ft elevation · 24,000 ft TD

FormationMD ftSubsea
Queen City2,778-2,325
Reklaw3,376-2,923
Carrizo4,083-3,630
WilcoxWILCOX - DISPOSAL4,202-3,749
AnacachoANACACHO - H2S10,238-9,785
Austin ChalkAUSTIN CHALK - H2S, DISPOSAL10,367-9,914

Marathon Oil EF LLC · Atascosa · 428 ft elevation · 23,000 ft TD

FormationMD ftSubsea
Queen City2,559-2,131
Reklaw3,483-3,055
Bartosh3,591-3,163
Carrizo3,941-3,513
WilcoxWILCOX - DISPOSAL5,357-4,929
NavarroNAVARRO - H2S8,706-8,278
OlmosOLMOS - DISPOSAL9,127-8,699
AnacachoANACACHO - H2S10,397-9,969
Austin ChalkAUSTIN CHALK - H2S, DISPOSAL10,537-10,109

About this data

Formation tops and elevations from the RRC dbf900 wellbore file (completion filings), names normalized to the formations registry; well identity from the permit record, location from the shared well record. Subsea is elevation minus measured depth. Nothing between filed tops is estimated.

New to these records? completion reports and the wellbore file

Developers: this page as JSON is GET /v1/data/cross-section, documented in the API reference.