摘要
微地震监测技术是对低渗透储层压裂效果评价和指导油藏精细注水开发的重要手段。通过观测、分析由压裂产生的微小地震事件,能够获取压裂裂缝的位置、大小、导流能力、几何形态及局部裂缝分布规律等诸多信息。姬塬油田王盘山长8油藏具有低孔、低渗、低压特征,常规压裂生产一段时间后减产很快;近年来开展了混合水体积压裂并实施了微地震监测。芦58-54井监测混合水体积压裂结果显示:产生的缝长达到315.97 m,缝宽104 m,缝高约58 m,影响体积约244.8万m3,方位北偏东19.5°;压裂使储层裂缝开启,泄油半径增大,单井产油量增加,效果非常明显。为该油藏进一步精细开发打下了坚实基础。
Micro-seismic monitoring technology is an important means to evaluate the fracturing effect of low permeability reservoir and to guide the development of fine water injection in oil reseryoir.Through the obseryation and analysis of micro-seismic events produced by fracturing,the location, size, flow conductivity,geometric shape and local fracture distribution regularity of fractures can be obtained. Wangpanshan Chang 8 reseryoir of the Jiyuan oilfield is characterized by low porosity,low per^meability and low voltage,and hence pro-duction will decrease soon after the conventional fracturing production is conducted for a period.In recent years researchers have carried out mixed water volume fracturing and implemented the micro-seismic monitoring.The monitoring of Lu 58-54 well mixed water volume fracturing results shows that the long slit produced is up to 315.97 m,the seam width is 104 m,the fracture height is about 58 m,the af-fected volume is about 24.48 million m3,and the direction is NE 19.5°.The fracturing has caused the reseryoir layer cracks to open and drainage radius to increase,thus increasing the amount of single well production.The effect is very obvious,and the results obtained by the authors lay a solid foundation for further fine development of the reservoir.
出处
《物探与化探》
CAS
CSCD
2017年第1期165-170,共6页
Geophysical and Geochemical Exploration
基金
中国石油长庆油田"姬塬油田混合水体积压裂试验研究"课题
关键词
微地震监测技术
混合水体积压裂
姬塬油田
压裂缝几何特征
micro earthquake real-time monitoring
measurement of mixed water volume fracturing
Jiyuan oilfield
hydraulic fracturegeometry
