RESERVOIR
GEOLOGICAL AND DEVELOPMENT CHARACTERISTICS
OF TIGHT AND SUPERTIGHT MARGINAL OIL FIELDS |
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Abstract: | The marginal oil field is
a common type of oil fields in continental strata.As there are small reserves,low
accumulation energy and poor reservoir quality in oil fields,many defficulties emerge when
developing this kind of oil fields.Recent years,a lot of continental tight and supertight
marginal oil fields were discovered in the Mesozoic (Upper Jurassic) basins of North
Liaoning and Nei Monggol,among which Majiapu,Liao-1 district and Bai 3-4 district are
three typical tight and supertight oil fields.In this paper,the reservoir characteristics
of this kind of marginal oil fields are emphatically discussed,the reason why reservoirs
have low permeability is analyzed,and the reservoir dynamic characteristics of tight oil
fields are summarized.On this basis,strategies for reasonable development of marginal oil
fields are suggested. |
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