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2 wells, subsea datum

West to east, 1.9 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 →

ABig Bend #1H4 tops×BTango #1H7 tops×
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-0-2,000-4,000-6,000-8,000-10,000-12,000SUBSEA FTA371 FT ELB330 FT ELWilcoxWilcoxPecan GapPecan GapAustin 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.

FormationABig BendBTango
Wilcox-4,689MD 5,060-5,010MD 5,340
Midway—-9,550MD 9,880
Navarro-9,969MD 10,340—
Navarrow—-10,320MD 10,650
Nacatock—-10,910MD 11,240
Glen Rose—-11,010MD 11,340
Pecan Gap-11,458MD 11,829-11,985MD 12,315
Austin Chalk-12,125MD 12,496-12,700MD 13,030

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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

ABig Bend #1H 42-149-33503

Magnolia Oil & Gas Operating LLC · Fayette · 371 ft elevation · 14,000 ft TD

FormationMD ftSubsea
WilcoxWILCOX - DISPOSAL5,060-4,689
Navarro10,340-9,969
Pecan Gap11,829-11,458
Austin Chalk12,496-12,125

BTango #1H 42-149-33456

Ramtex Energy LLC · Fayette · 330 ft elevation · 14,000 ft TD

FormationMD ftSubsea
WilcoxWILCOX - DISPOSAL5,340-5,010
Midway9,880-9,550
Navarrow10,650-10,320
Nacatock11,240-10,910
Glen RoseGLEN ROSE, LOWER - DISPOSAL11,340-11,010
Pecan Gap12,315-11,985
Austin Chalk13,030-12,700

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.