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古地理学报 ›› 2008, Vol. 10 ›› Issue (5): 447-458. doi: 10.7605/gdlxb.2008.05.002

• 古地理学及矿产资源 • 上一篇    下一篇

川西坳陷新场气田上三叠统须家河组须四、须二段储集层成岩-储集相及其成岩演化序列

徐樟有   吴胜和   张小青    赵  艳    曾小英   张晓玉   

  1. 1 中国石油大学（北京），北京  102249
    2 油气资源与探测国家重点实验室，中国石油大学（北京），北京  102249
    3 中石化西南油气分公司勘探开发研究院，四川成都  610016
  • 出版日期:2008-10-01 发布日期:2008-10-01
  • 作者简介:徐樟有，男，1964年生，副教授，1997年获石油大学（北京）矿产普查与勘探专业博士学位，一直从事油气储集层地质与油气藏描述研究的教学和科研工作。Tel:01089731949；E-mail:xzy@cup.edu.cn。

Diagenetic-reservoir facies and their evolutionary sequences of the Upper Triassic Xujiahe Formation in Xinchang Gasfield, estern Sichuan Depression

Xu Zhangyou  Wu Shenghe   Zhang Xiaoqing   Zhao Yan   Zeng Xiaoying   Zhang Xiaoyu    

  1. 1  China University of Petroleum（Beijing）, Beijing 102249
    2  State Key Laboratory of Petroleum Resource and Prospecting ,China University of Petroleum( Beijing）, Beijing 102249
    3  Research Institute of Exploration and Development, SINOPEC Southwest Company,Chengdou 610016,Sichuan
  • Online:2008-10-01 Published:2008-10-01
  • About author:Xu Zhangyou,born in 1964,is an associate professor. He obtained his Ph.D.degree from China University of Petroleum(Beijing) in 1997 and is mainly engaged in studies of reservoir geology and reservoir description.tel:010-89731949;E-mail:xzy@cup.edu.cn.

PDF

摘要：

通过对川西坳陷新场气田上三叠统须家河组须四、须二段储集层成岩作用类型及其特征研究，认为储集层主要经历了压实压溶作用、自生矿物胶结作用和溶解作用3种类型。储集层成岩-储集相可以划分成5种，即强溶解成岩-储集相、绿泥石衬边粒间孔成岩-储集相、压实压溶成岩-储集相、碳酸盐胶结成岩-储集相和石英次生加大成岩-储集相。不同的储集层成岩-储集相由于经历了不同的成岩演化序列，使得储集层中的残余原生粒间孔和次生溶孔的形成条件各不一样，储集层中孔隙的保存主要决定于孔隙被压实、自生矿物的充填、多期的溶解作用等因素，并与孔隙中发育的绿泥石衬边有紧密联系。在上述5种成岩-储集相中，有效的成岩-储集相只有两种，即强溶解成岩-储集相和绿泥石衬边粒间孔成岩-储集相，它们对须家河组须四、须二段优质储层的形成起着至关重要的作用，而其它几种成岩-储集相对优质储层的形成是无效的。

Abstract:

Abstract  Based on the studies of reservoir diagenesis types and their characteristics of the Members 4 and 2 of Upper
 Triassic Xujiahe Formation in Xinchang Gasfield, it is concluded that the reservoir diagenesis mainly includes the pressolution, the authigenic mineral cementation and the dissolution. The diagenetic-reservoir facies is divided into 5 types, namely as, the intense dissolution diagenetic-reservoir facies, the chlorite lape intergranular pore diagenetic-reservoir facies, the pressolution diagenetic-reservoir facies, the carbonate cementation diagenetic-reservoir facies and the quartz secondary overgrowth diagenetic- reservoir facies. The formation conditione of the relic primary intergranular pores and secondary dissolution pores in the reservoirs are different due to tneir different diagenetic evolutionary sequences. The preservation of pores in reservoir is mainly controlled by the burial, compaction, filling of authegenic minerals and the multi-stages dissolution, as well as the chlorite laping developed in the pores. The effective diagenetic-reservoir facies in the 5 types are respectively the intense dissolution diagenetic-reservoir facies and chlorite lape intergranular pore diagenetic-reservoir facies. They play an important role in the formation of the reservoir of Members 4 and Member 2 of Xujiahe Formation , while the other diagenetic facies are ineffective for the high quality reservoir formation.