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

• 地质勘探 • 上一篇    下一篇

西部凹陷北部沙河街组成岩作用及成岩相研究

王勇1,2 鲍志东3 张春雷4 郝立业3 李慧莉5   

  1. 1.中国石油大港油田博士后工作站,天津300280;2.中国石油大学博士后流动站,北京昌平102249;3.中国石油大学,北京昌平102249;4.中国石油勘探开发研究院,北京100083;5.中原油田勘探开发科学研究院,河南濮阳457001
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2008-10-20 发布日期:2008-10-20

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

WANG Yong1,2 BAO Zhi-dong3 ZHANG Chun-lei4 HAO Li-ye3 LI Hui-li5   

  1. 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

摘要:

根据砂岩薄片、铸体薄片、扫描电镜、X-衍射分析,对辽河断陷西部凹陷北部沙河街组碎屑岩储层的成岩演化特征进行了研究。将沙河街组地层划分为早成岩A亚期、B亚期和中成岩A亚期

3个成岩阶段,识别出压实作用、胶结作用、蚀变作用、溶蚀作用和破裂作用等5种成岩作用;压实作用和胶结作用强烈地破坏了砂岩的原生孔隙结构,溶蚀作用和破裂作用则有效地改善了砂岩的孔

隙结构。总结了成岩演化序列,在此基础上识别了5种成岩相,并指出了储层发育的有利成岩相带。

关键词: 西部凹陷, 沙河街组, 成岩作用, 成岩相, 孔隙结构, 辽河断陷

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

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