Sorrento-Mount Pearl-Siaana field complex, a major Morrow accumulation in southeast Colorado

Conference · Sat Aug 01 04:00:00 EDT 1987 · AAPG (Am. Assoc. Pet. Geol.) Bull.; (United States)

OSTI ID:5863851

Sonnenberg, S A

Pennsylvanian Morrow sandstones are oil and gas productive throughout a large area in southeast Colorado. The Sorrento-Mount Pearl-Sianna fields represent an area of 8200 acres (3319 ha) of continuous production at depths of 5316-5575 ft (1620-1699 m) from a middle Morrow sandstone reservoir. Recoverable reserves for the three fields are estimated to be over 20 million bbl of oil. The average ultimate recovery per well is 250,000 to 300,000 bbl of oil. On the basis of subsurface mapping, productive sandstones are interpreted to be fluvial valley-fill deposits, consisting mainly of channel sandstones. The deposits are encased in marine shale and range in thickness from 0 to 72 ft (0 to 21.9 m). The Sorrento-Mount Pearl-Sianna field complex is a large stratigraphic trap formed by a change of channel trend against regional structure. Paleostructure may have controlled the location of the valley-fill system. Present-day structure plays a minor role by creating multiple gas-oil and oil-water contacts in the fields.

• Research Organization: Bass Enterprises, Denver, CO
• OSTI ID: 5863851
• Report Number(s): CONF-870915-
• Conference Information: Journal Name: AAPG (Am. Assoc. Pet. Geol.) Bull.; (United States) Journal Volume: 71:8
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
03 NATURAL GAS
030200 -- Natural Gas-- Reserves
Geology
& Exploration
ALLUVIAL DEPOSITS
COLORADO
FEDERAL REGION VIII
GEOLOGIC DEPOSITS
GEOLOGIC FORMATIONS
MINERAL RESOURCES
NATURAL GAS DEPOSITS
NATURAL GAS FIELDS
NORTH AMERICA
OIL FIELDS
PETROLEUM DEPOSITS
RESERVOIR ROCK
RESOURCES
ROCKS
SANDSTONES
SEDIMENTARY ROCKS
SHALES
USA