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The AAPG/Datapages Combined Publications Database

Montana Geological Society

Abstract

MTGS-AAPG

Montana Geological Society: 1993 Field Conference Guidebook: Old Timers' Rendezvous Edition: Energy and Mineral Resources of Central Montana
---, 1993

Pages 151 - 157

Southwest Sumatra Field: Exploration History and Observations

Joseph Omelchuck, Consulting Geologist Corvallis, Oregon

ABSTRACT

Southwest Sumatra Field is typical of Central Montana Tyler Formation (Pennsylvanian) oil fields that produce from stratigraphic traps in fluvial sandstones. The major portion of the field was discovered by conventional subsurface techniques. The lowest of the three members of the Tyler Formation consists of fluvial valley-fill deposits which include the reservoir sandstones. Two parallel, narrow reservoirs are separate and have sub-normal pressures.

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