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Geology Property and Water Injection Production Experiment of Qingpingchuan Oil Field(PDF)

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

Issue:
2006年第03期
Page:
42-44
Research Field:
Publishing date:

Info

Title:
Geology Property and Water Injection Production Experiment of Qingpingchuan Oil Field
Author(s):
LIU Xue-feng
Qingpingchuan Oil Drilling And Producing Company, Yanchang Oil Bureau, Yanchuan 717200, Shaanxi, China
Keywords:
Yanchang Group;  low penetrability reservoir;  oil bed sensitivity;  oil recovery;  water injection
PACS:
P618.130.2
DOI:
-
Abstract:
Chang 2 reservoir of Qingpingchuan oil field, located in the eastern Shanbei slope of the Erdos Basin, is a typical low penetrability oil reservoir. Fine-grained feldspar sandstone is the main oil-bearing rock and chlorite is the dominant kind of clay minerals. Physical property is not nice for oil production because of low porosity and penetrability, however experiment of water injection shows that it has high water injection efficiency which is up to 49.4%. Results show that water injection can largely increase oil production in a short time stage. The peak production can be reached at the 4th to the 7th months after water injection, and the production would decrease after the 8th month. The initial production decrease degree of water injection is 0.019 1(1 /month). It indicates that water injection can increase both of oil production speed and oil recovery.

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Memo

Memo:
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Last Update: 2006-09-20