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2 wells, subsea datum

West to east, 0.7 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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-0-2,000-4,000-6,000-8,000-10,000-12,000SUBSEA FTA329 FT ELB307 FT ELWilcoxWilcoxEscondidoEscondidoOlmosOlmosAnacachoAnacachoAustin ChalkAustin ChalkEagle FordEagle Ford

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.

FormationAForrest Wheeler 35BGW DG Unit 5-Marlin SA 2
Wilcox-4,160MD 4,489-4,213MD 4,520
Escondido-8,571MD 8,900-8,545MD 8,852
Olmos-9,345MD 9,674-9,432MD 9,739
Anacacho-11,121MD 11,450-11,202MD 11,509
Austin Chalk-11,674MD 12,003-11,760MD 12,067
Eagle Ford-11,747MD 12,076-11,838MD 12,145

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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

BPX Operating Company · McMullen · 329 ft elevation · 14,000 ft TD

FormationMD ftSubsea
WilcoxWILCOX - DISPOSAL4,489-4,160
Escondido8,900-8,571
Olmos9,674-9,345
Anacacho11,450-11,121
Austin Chalk12,003-11,674
Eagle FordEAGLE FORD - H2S12,076-11,747

BPX Operating Company · McMullen · 307 ft elevation · 14,000 ft TD

FormationMD ftSubsea
WilcoxWILCOX - DISPOSAL4,520-4,213
Escondido8,852-8,545
Olmos9,739-9,432
Anacacho11,509-11,202
Austin Chalk12,067-11,760
Eagle FordEAGLE FORD - H2S12,145-11,838

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.