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2 wells, subsea datum

West to east, 1.3 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 FTA419 FT ELB358 FT ELQueen CityQueen CityReklawReklawCarrizoCarrizoWilcoxWilcoxOlmosOlmosAnacachoAnacachoAustin 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.

FormationATom Family-Retzloff SA1BRetzloff Tom-May Psa B
Queen City-2,295MD 2,714-2,737MD 3,095
Reklaw-2,875MD 3,294-3,099MD 3,457
Bartosh—-3,303MD 3,661
Carrizo-3,550MD 3,969-3,746MD 4,104
Wilcox-3,625MD 4,044-5,081MD 5,439
Navarro—-8,419MD 8,777
Olmos-8,635MD 9,054-8,929MD 9,287
Escondido—-8,929MD 9,287
Anacacho-10,031MD 10,450-10,344MD 10,702
Austin Chalk-10,191MD 10,610-10,546MD 10,904

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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 · 419 ft elevation · 26,000 ft TD

FormationMD ftSubsea
Queen City2,714-2,295
Reklaw3,294-2,875
Carrizo3,969-3,550
WilcoxWILCOX - DISPOSAL4,044-3,625
OlmosOLMOS - DISPOSAL9,054-8,635
AnacachoANACACHO - H2S10,450-10,031
Austin ChalkAUSTIN CHALK - H2S, DISPOSAL10,610-10,191

Marathon Oil EF LLC · Atascosa · 358 ft elevation · 20,000 ft TD

FormationMD ftSubsea
Queen City3,095-2,737
Reklaw3,457-3,099
Bartosh3,661-3,303
Carrizo4,104-3,746
WilcoxWILCOX - DISPOSAL5,439-5,081
NavarroNAVARRO - H2S8,777-8,419
EscondidoESCONDIDO - H2S, DISPOSAL9,287-8,929
OlmosOLMOS - DISPOSAL9,287-8,929
AnacachoANACACHO - H2S10,702-10,344
Austin ChalkAUSTIN CHALK - H2S, DISPOSAL10,904-10,546

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.