海拉尔盆地凝灰质储层地应力确定及应用  

DETERMINATION AND ITS APPLICATION OF THE EARTH STRESS OF TUFFACEOUS RESERVOIR IN HAILAR BASIN

作　　者：裴福顺[1] 

机构地区：[1]大庆油田有限责任公司海拉尔勘探开发指挥部,内蒙古呼伦贝尔021000

出　　处：《大庆石油地质与开发》2011年第4期84-88,共5页Petroleum Geology & Oilfield Development in Daqing

摘　　要：根据黏滞剩磁法、井筒崩落及热弹性应变恢复方法来确定储层地应方向，确定出海拉尔盆地凝灰质储层水平最大主应力方向在NE91°～106°，水平最小主应力方向在NE1°-16°。综合运用差应变法与小型压裂测量确定地应力大小，着重分析了水力压裂时裂缝和地应力的关系，确定了凝灰质储层水力压裂缝为垂直裂缝；继而探讨了地应力在油田注水开发中的作用和影响，得出与最大主应力方向接近的油井先受效的结论。Viscous remanence magnetization method, wellbore caving and thermo-elastic strain recover method could be used to identify the ground stress direction of reservoirs, and the biggest mainly horizontal stress of tuffaceous reservoirs in Hailaer Basin is between NE 91°and 106°, the smallest main stress is between 1° and 16°. Differential strain method and small-scale fracturing measurement are combined to identify the stress strength. This paper analyzes the relationship between fractures and ground stress during hydraulic fracturing, determines that the hydraulic fractures in tuffaceous reservoirs are vertical, discusses the influence of ground stress on the water flooding development of oilfield and concludes that the producers near the biggest main stress direction responds earlier.

关 键 词：凝灰质 地应力 裂缝 

分 类 号：TE321[石油与天然气工程—油气田开发工程]