摘要
通过对塔里木盆地震旦寒武系白云岩储层构造裂缝的测量、统计和研究,结合岩芯观察和测井数据分析,认为构造裂缝对白云岩的原生孔洞和部分次生孔洞起一定的连通作用,对白云岩储层起一定的改造作用。对塔里木盆地塔中地区、牙哈地区、英买力地区和巴楚地区4个区块构造裂缝有效性与开度和倾角的关系研究后认为,塔里木盆地震旦寒武系白云岩开度较窄的裂缝和高角度裂缝的有效性较高,该类构造裂缝对白云岩储层起良好的改造作用。
Combining the core observation and related logging data of the drillings in Sinian-Cambrain stratum, the dolomite reservoir section fractures were studied. It shows that fractures have a connected effect on native holes and some secondary holes, and plays a certain role in the transformation of the dolomite reservoir. After studying the relation between the fracture efficiency and fracture opening degree or fracture dip angle in four blocks of the Tarim Basin, Tazhong Area,Yaha Area, Yingmaili Area, and Bachu area, it is concluded that dolomite fractures which have narrower opening degree and higher angle have a higher effectiveness, and such kind of fractures play an important role in the transformation of dolomite reservoir.
出处
《北京大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2013年第6期993-1001,共9页
Acta Scientiarum Naturalium Universitatis Pekinensis
基金
国家科技重大专项(2008ZX05029-001)
塔里木油田"塔里木盆地震旦寒武系白云岩优质储层发育展布规律与有利勘探区带选择"项目资助
关键词
储层
白云岩
有效裂缝
开度
倾角
reservoirs
dolomite
effective fracture
opening degree
inclination
