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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 FTA241 FT ELB251 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.

FormationAGuajillo Unit 7 SouthBGuajillo East
Queen City-2,793MD 3,034-2,811MD 3,062
Reklaw-3,155MD 3,396-3,173MD 3,424
Bartosh-3,553MD 3,794-3,571MD 3,822
Carrizo-3,794MD 4,035-3,813MD 4,064
Wilcox-5,083MD 5,324-5,101MD 5,352
Navarro-8,745MD 8,986-8,763MD 9,014
Olmos-9,081MD 9,322-9,099MD 9,350
Anacacho-10,574MD 10,815-10,584MD 10,835
Austin Chalk-10,806MD 11,047-10,804MD 11,055
Eagle Ford—-10,914MD 11,165

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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 · 241 ft elevation · 18,200 ft TD

FormationMD ftSubsea
Queen City3,034-2,793
Reklaw3,396-3,155
Bartosh3,794-3,553
Carrizo4,035-3,794
WilcoxWILCOX - DISPOSAL5,324-5,083
NavarroNAVARRO - H2S8,986-8,745
OlmosOLMOS - DISPOSAL9,322-9,081
AnacachoANACACHO - H2S10,815-10,574
Austin ChalkAUSTIN CHALK - H2S, DISPOSAL11,047-10,806

BGuajillo East #41H 42-013-35553

Marathon Oil EF LLC · Atascosa · 251 ft elevation · 20,000 ft TD

FormationMD ftSubsea
Queen City3,062-2,811
Reklaw3,424-3,173
Bartosh3,822-3,571
Carrizo4,064-3,813
WilcoxWILCOX - DISPOSAL5,352-5,101
NavarroNAVARRO - H2S9,014-8,763
OlmosOLMOS - DISPOSAL9,350-9,099
AnacachoANACACHO - H2S10,835-10,584
Austin ChalkAUSTIN CHALK - H2S, DISPOSAL11,055-10,804
Eagle FordEAGLE FORD - H2S11,165-10,914

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.