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2 wells, subsea datum

West to east, 1.2 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 FTA287 FT ELB312 FT ELReklawReklawCarrizoCarrizoWilcoxWilcoxAnacachoAnacachoAustin 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.

FormationAR May a-May Girls Chapman SA2BMay Girls
Queen City—-2,413MD 2,725
Reklaw-2,987MD 3,274-3,125MD 3,437
Carrizo-3,626MD 3,913-3,783MD 4,095
Wilcox-3,719MD 4,006-3,888MD 4,200
Anacacho-10,112MD 10,399-10,346MD 10,658
Austin Chalk-10,312MD 10,599-10,548MD 10,860

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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 · 287 ft elevation · 24,000 ft TD

FormationMD ftSubsea
Reklaw3,274-2,987
Carrizo3,913-3,626
WilcoxWILCOX - DISPOSAL4,006-3,719
AnacachoANACACHO - H2S10,399-10,112
Austin ChalkAUSTIN CHALK - H2S, DISPOSAL10,599-10,312

BMay Girls #4H 42-013-36134

Marathon Oil EF LLC · Atascosa · 312 ft elevation · 18,000 ft TD

FormationMD ftSubsea
Queen City2,725-2,413
Reklaw3,437-3,125
Carrizo4,095-3,783
WilcoxWILCOX - DISPOSAL4,200-3,888
AnacachoANACACHO - H2S10,658-10,346
Austin ChalkAUSTIN CHALK - H2S, DISPOSAL10,860-10,548

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.