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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 FTA244 FT ELB250 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 SouthBGaujillo East
Queen City-2,790MD 3,034-2,812MD 3,062
Reklaw-3,152MD 3,396-3,174MD 3,424
Bartosh-3,550MD 3,794-3,572MD 3,822
Carrizo-3,791MD 4,035-3,814MD 4,064
Wilcox-5,080MD 5,324-5,102MD 5,352
Navarro-8,742MD 8,986-8,764MD 9,014
Olmos-9,078MD 9,322-9,100MD 9,350
Anacacho-10,567MD 10,811-10,590MD 10,840
Austin Chalk-10,804MD 11,048-10,810MD 11,060

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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 · 244 ft elevation · 18,200 ft TD

FormationMD ftSubsea
Queen City3,034-2,790
Reklaw3,396-3,152
Bartosh3,794-3,550
Carrizo4,035-3,791
WilcoxWILCOX - DISPOSAL5,324-5,080
NavarroNAVARRO - H2S8,986-8,742
OlmosOLMOS - DISPOSAL9,322-9,078
AnacachoANACACHO - H2S10,811-10,567
Austin ChalkAUSTIN CHALK - H2S, DISPOSAL11,048-10,804

BGaujillo East #39H 42-013-35552

Marathon Oil EF LLC · Atascosa · 250 ft elevation · 20,000 ft TD

FormationMD ftSubsea
Queen City3,062-2,812
Reklaw3,424-3,174
Bartosh3,822-3,572
Carrizo4,064-3,814
WilcoxWILCOX - DISPOSAL5,352-5,102
NavarroNAVARRO - H2S9,014-8,764
OlmosOLMOS - DISPOSAL9,350-9,100
AnacachoANACACHO - H2S10,840-10,590
Austin ChalkAUSTIN CHALK - H2S, DISPOSAL11,060-10,810

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.