DIAGENESIS AND DIAGENETIC FACIES OF SHAHEJIE FORMATION AT THE NORTHERN PART OF WEST SAG

doi:10.3863/j.issn.1000-2634.2008.05.013

西南石油大学学报(自然科学版) ›› 2008, Vol. 30 ›› Issue (5): 64-68.DOI: 10.3863/j.issn.1000-2634.2008.05.013

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DIAGENESIS AND DIAGENETIC FACIES OF SHAHEJIE FORMATION AT THE NORTHERN PART OF WEST SAG

WANG Yong^1,2 BAO Zhi-dong³ ZHANG Chun-lei⁴HAO Li-ye³ LI Hui-li⁵

1.Working Station for Postdoctoral Scientific Research，PetroChina Dagang Oilfield Company，Tianjin 300280，China；2.Working Station for Postdoctoral Scientific Research，China University of Petroleum，Changping Beijing 102249，China；3.China University of Petroleum，Changping Beijing 102249，China；4.Research Institute of Petroleum Exploration and Development，CNPC，Beijing 100083，China；5.Institute of Petroleum Exploration and Development，Zhongyuan Oilfeild，SINOPEC，Puyang Henan 457001，China

Received:1900-01-01 Revised:1900-01-01 Online:2008-10-20 Published:2008-10-20

Abstract

Abstract: Based on the analysis of rock slides,casting slides,scan electron microscope and X-ray diffraction etc,the characteristics of diagenetic evolution of clastic reservoirs in Shahejie formation at the northern part of west sag are studied.Three diagenetic stages in Shahejie Formation are divided as subphase A of early diagenesis,subphase B of late diagenesis and subphase A of middle diagenesis.Four types of diagenesis are recognized,including compaction,cementation,dissolution and fracturing.The compaction and cementation destroy the primary pore structure intensively,dissolution and fracturing change the pore structure effectively.The succession of diagenetic evolution is summed,five types of diagenetic facies are recognized,and the favorable diagenetic facies to the reservoir development are indicated.

Key words: west sag, Shahejie Formation, diagenesis, diagenetic facies, pore structure, Liaohe lift

CLC Number:

TE122

WANG Yong;BAO Zhi-dong ZHANG Chun-lei HAO Li-ye LI Hui-li. DIAGENESIS AND DIAGENETIC FACIES OF SHAHEJIE FORMATION AT THE NORTHERN PART OF WEST SAG[J]. 西南石油大学学报(自然科学版), 2008, 30(5): 64-68.

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DIAGENESIS AND DIAGENETIC FACIES OF SHAHEJIE FORMATION AT THE NORTHERN PART OF WEST SAG

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