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2 wells, subsea datum

West to east, under 0.1 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 FTA429 FT ELB429 FT ELQueen CityQueen CityReklawReklawBartoshBartoshCarrizoCarrizoWilcoxWilcoxNavarroNavarroOlmosOlmosAnacachoAnacachoAustin 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.

FormationAChapman Pfeil AC PsaBChapman-Pfeil 1H Psa
Queen City-2,431MD 2,860-2,431MD 2,860
Reklaw-3,006MD 3,435-3,006MD 3,435
Bartosh-3,259MD 3,688-3,259MD 3,688
Carrizo-3,677MD 4,106-3,677MD 4,106
Wilcox-5,093MD 5,522-5,093MD 5,522
Navarro-8,243MD 8,672-8,243MD 8,672
Olmos-8,630MD 9,059-8,630MD 9,059
Anacacho-9,982MD 10,411-10,017MD 10,446
Austin Chalk-10,108MD 10,537-10,145MD 10,574

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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 · 429 ft elevation · 20,000 ft TD

FormationMD ftSubsea
Queen City2,860-2,431
Reklaw3,435-3,006
Bartosh3,688-3,259
Carrizo4,106-3,677
WilcoxWILCOX - DISPOSAL5,522-5,093
NavarroNAVARRO - H2S8,672-8,243
OlmosOLMOS - DISPOSAL9,059-8,630
AnacachoANACACHO - H2S10,411-9,982
Austin ChalkAUSTIN CHALK - H2S, DISPOSAL10,537-10,108

Marathon Oil EF LLC · Atascosa · 429 ft elevation · 20,000 ft TD

FormationMD ftSubsea
Queen City2,860-2,431
Reklaw3,435-3,006
Bartosh3,688-3,259
Carrizo4,106-3,677
WilcoxWILCOX - DISPOSAL5,522-5,093
NavarroNAVARRO - H2S8,672-8,243
OlmosOLMOS - DISPOSAL9,059-8,630
AnacachoANACACHO - H2S10,446-10,017
Austin ChalkAUSTIN CHALK - H2S, DISPOSAL10,574-10,145

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.