古地理学报 ›› 2008, Vol. 10 ›› Issue (1): 33-41. doi: 10.7605/gdlxb.2008.01.004

• “白云岩成因与油气储集层”专题 • 上一篇    下一篇

辽河坳陷西部斜坡带南段新生界成岩相分析与优质储集层预测*

孟元林1 李娜1 黄文彪1 肖丽华1 刘德来2 张清久3 孙洪斌4 修洪文1   

  1. 1 大庆石油学院,河北秦皇岛 066004
    2 中国石油天然气股份有限公司,北京 100112
    3 中国石油吉林油田公司乾安采油厂,吉林乾安 138000
    4 中国石油辽河油田公司,辽宁盘锦 124010
  • 收稿日期:2006-10-20 修回日期:2007-10-15 出版日期:2008-02-01 发布日期:2008-02-01
  • 作者简介:孟元林,男,1961年生,2004年毕业于中国地质大学(北京)并获博士学位,现为大庆石油学院教授,主要从事石油地质与储集层研究。E-mail:qhdmyl@163.com;Tel:0335-8065743。
  • 基金资助:
    基金项目:国家自然科学基金项目(批准号:40372102)和国家“十五”重大科技攻关项目(批准号:2003BA613A01)资助

Diagenetic facies analysis and high quality reservoir prediction of the Cenozoic in southern segment of western slope of Liaohe Depression

Meng Yuanlin1, Li Na1, Huang Wenbiao1, Xiao Lihua1, Liu Delai2, Zhang Qingjiu3, Sun Hongbin4, Xiu Hongwen1   

  1. 1 Daqing Petroleum Institute,Qinhuangdao 066004,Hebei
    2 PetroChina Company Limited,Beijing 100112
    3 Qianan Petroleum Recovery Plant,PetroChina Jilin Oilfield Company,Qianan 138000,Jilin
    4 PetroChina Liaohe Oilfield Company,Panjin 124010,Liaoning
  • Received:2006-10-20 Revised:2007-10-15 Online:2008-02-01 Published:2008-02-01
  • About author:Meng Yuanlin,born in 1961,graduated from China University of Geosciences(Beijing)in 2004,and obtained his Ph.D.degree. Now he is a professor in Daqing Petroleum Institute,and is mainly engaged in the research of reservoir and petroleum geology.E-mail:qhdmyl@163.com;Tel:0335-8065743.

摘要: 储集层实测孔隙度、普通薄片、铸体薄片和扫描电镜的分析资料表明,渤海湾盆地辽河坳陷西部斜坡带南段新生界储集层在纵向上发育3个次生孔隙带。从而在一个普遍低孔、低渗的背景下,形成了孔隙度相对较高的优质储集层。优质储集层的形成和分布主要受沉积微相和成岩作用的影响与控制,分别形成于辫状分流河道、河口坝+席状砂沉积微相,目前处于早成岩阶段B期—中成岩阶段A1亚期,发育溶蚀成岩相。通过模拟古地温、镜质组反射率、甾烷异构化率和自生石英含量随时间的变化规律,预测了西部斜坡带南段成岩阶段和成岩相的横向展布。通过成岩相图和沉积相图的叠合,预测了沙河街组三段优质储集层的分布。预测结果表明,沙三段优质储集层发育于斜坡区的中部。

关键词: 渤海湾盆地, 辽河坳陷, 西部斜坡带, 新生界, 优质储集层

Abstract: The analyses of measured porosity data,thin sections,casting thin sections and scanning electronic microscopes of the reservoirs indicate that three secondary porosity zones were vertically developed in the Cenozoic reservoirs of the southern segment of the western slope of the Liaohe Depression in the Bohaiwan Basin.As a result,the high quality reservoirs are developed in a generally low porosity and permeability background. Sedimentary microfacies and diagenesis are the main factors controlling the formation and distribution of the high quality reservoirs which were mainly developed as braided channel,mouth-bar and sheet-like sand microfacies. They belong to the early diagenetic stage B to intermediate diagenetic stage A1 and dissolution diagenetic facies were developed. The diagenetic stages and diagenetic facies distribution are predicted by simulating the paleotemperature,vitrinite reflectance,sterane isomerization rate and authigenetic quartz variation in space and time. The distribution of high quality reservoirs of Member 3 of Shahejie Formation is predicted by superimposing the diagenetic facies maps on the microfacies maps. The results show that the high-quality reservoirs of Member 3 of Shahejie Formation were developed in the middle part of the western slope.

Key words: Bohaiwan Basin, Liaohe Depression, western slope, Cenozoic, high quality reservoir

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