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Book Chapter

Accumulation of Oil and Gas in Limestone

By
W. V. Howard
W. V. Howard
Urbana, Illinois
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Published:
January 01, 1934

Abstract

In considering the accumulation of oil and gas in limestone reservoirs according to the theories involving capillarity, water circulation or gravitational adjustment, one is faced by many difficulties in explaining migration through impervious rocks surrounding the reservoir. It is therefore suggested that oil-forming organisms collected within the reservoir itself and the area immediately tributary thereto, and that there is consequently no true distinct source rock. Neither is there any necessity for accounting for any migration excepting within the porous limestone itself.

The accumulation of oil in limestone may be effected in various ways, depending on the nature of the openings in the limestones. These openings may be classified as: (1) fractures; (2) primary porosity; and (3) secondary porosity, (a) with partial later cementation, and (b) without later cementation.

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Contents

AAPG Special Publication

Problems of Petroleum Geology

W. E. Wrather
W. E. Wrather
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F. H. Lahee
F. H. Lahee
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American Association of Petroleum Geologists
ISBN electronic:
9781629812564
Publication date:
January 01, 1934

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