CHARACTERISTICS OF CHANG 6 RESERVOIR  AND  THE INFLUENCE ON WATER INJECTION PRODUCTION IN YAN AN AREA

doi:10.3863/j.issn.1674-5086.2009.03.016

西南石油大学学报(自然科学版) ›› 2009, Vol. 31 ›› Issue (3): 74-77.DOI: 10.3863/j.issn.1674-5086.2009.03.016

• 石油与天然气工程 • Previous Articles Next Articles

CHARACTERISTICS OF CHANG 6 RESERVOIR AND THE INFLUENCE ON WATER INJECTION PRODUCTION IN YAN AN AREA

FU Guo-min¹ SUN Lei¹ LIU Rui²MIAO Qing³ LI Lei³

1.Institute of Resources,Chang′an University,Xi′an Shanxi 710054,China;2.Northwest Department，SINOPEC,Urumqi Xinjiang 830011,China;3. Zhongyuan Oilfield Company,SINOPEC,Puyang Henan 457001,China

Received:1900-01-01 Revised:1900-01-01 Online:2009-06-20 Published:2009-06-20

Abstract

Abstract:

The characteristic of Yanchang reservoir and the influence on water injection production are systematic researched by means of outcrop,rock core and thin section inspection,as well as plate magnetism and dip log data.It is indicated that the macroscopic fractures in the reservoir are dominated by EW orientation,and SN orientation comes secondary,locally,the fractures with NE and NW orientation develop.The microscopic fractures are made up of tectonic ones and digenetic ones,parallel to macroscopic fracture orientation.On the setting of the present greatest stress being NE80°,outer force induces the fractures with E-W orientation to open and connect first,which makes oil wells improve,water cut increases quickly an dis easy to be flooded,and the fractures with S-N orientation are compressed and closed,with poor connection,oil wells are slowly improved.The technical method of diamond-shape inverted nine-spot well pattern.Non fracturing injection,different direction water injection and production well taking different fracturing parameters are the key to improve water injection effectiveness of super-low permeability reservoir.

Key words: reservoir fracture, water injection production, Yanchang 6 oil layer, Yanchang Formation, Ordos Basin

CLC Number:

TE34
TE122.3

FU Guo-min SUN Lei LIU Rui MIAO Qing LI Lei . CHARACTERISTICS OF CHANG 6 RESERVOIR AND THE INFLUENCE ON WATER INJECTION PRODUCTION IN YAN AN AREA[J]. 西南石油大学学报(自然科学版), 2009, 31(3): 74-77.

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CHARACTERISTICS OF CHANG 6 RESERVOIR AND THE INFLUENCE ON WATER INJECTION PRODUCTION IN YAN AN AREA

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