摘要
采用泡压法测试得到储层岩石的孔隙结构特征,其包含多种储层损害内部和外部控制因素,能够反映连通喉道渗流分布特征,在此基础上建立分形维数计算方法,并对孔隙结构进行描述;进行水锁实验和应力敏感性实验,研究分形特征与储层损害之间的相关性,实验结果显示分形维数越大,水锁损害率和应力敏感损害率越高。
The pore structure characteristics which tested by bubble pressure method,including many internal and external factors of formation damage,can reflect the flowing distribution of connected throats.We use fractal dimension to describe the pore structure and study on the relationship between fractal dimension and formation damage through experiments.The results show that the greater the fractal dimension,the higher water blocking damage and stress sensitivity.
出处
《天然气地球科学》
EI
CAS
CSCD
北大核心
2011年第6期1128-1132,共5页
Natural Gas Geoscience
基金
国家科技重大专项"高压低渗气层水平井钻井保护技术"(编号:2011ZX05022-004-02)资助
关键词
孔隙结构
连通喉道
分形
水锁
应力敏感性
储层损害
Pore structure
Connected throat
Fractal
Water blocking
Stress sensitivity
Formation damage.
