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Diagenesis and Porosity Evolution of Chang-6 Oil-bearing Formation in Zhiluo Oilfield of Ordos Basin(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2010年第02期
Page:
161-165
Research Field:
基础地质与矿产地质
Publishing date:

Info

Title:
Diagenesis and Porosity Evolution of Chang-6 Oil-bearing Formation in Zhiluo Oilfield of Ordos Basin
Author(s):
WANG Cai-ping1; 2
(1.School of Petroleum Resources, Xi'an Shiyou University, Xi'an 710065, Shaanxi, China; 2.Zhiluo Oil Recovery Factory, Shaanxi Yanchang Petroleum(Group)Company Limited, Fuxian 727500, Shaanxi, China)
Keywords:
diagenesis;  diagenetic stage;  pore type;  Chang-6 Oil-bearing Formation;  Zhiluo Oilfield;  Ordos Basin
PACS:
TE343;P618.13
DOI:
-
Abstract:
Chang-6 Oil-bearing Formation of Triassic Yanchang Formation in Zhiluo Oilfield of Ordos Basin is weightily exploited in recent years. Characteristic of petrology and diagenesis of the oil-bearing formation was studied. The result showed that Chang-6 Oil-bearing Formation was composed by fine-grained and debris feldspar sandstones; sandstone experienced complex diagenesis including compaction, cementation, alteration and dissolution; diagenesis reached A period in the late diagenetic stage. Diagenesis controlled reservoir porosity of sandstones in which compaction and cementation caused low permeability while secondary vugular-solution pore improved the reservoir property and controlled distribution characteristics of Chang-6 Oil-bearing Formation with relatively high permeability and porosity.

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Memo

Memo:
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Last Update: 2010-06-20