摘要
大斜度井在压裂增产过程中与直井的差异较大,主要由于井斜造成裂缝形态与直井不同,近井筒处出现裂缝弯曲、微裂缝、裂缝窄以及施工压力异常等现象,影响施工完成。研究分析了井斜对裂缝起裂、裂缝形态以及施工压力等因素的影响,找出大斜度井与直井的区别,并提出提高施工排量、加入支撑剂段塞、增大前置液量等工艺措施,经现场试验证明了其可行性。
In the process of fracturing increase production,There is much difference between straight well and high angle deviated hole,main reason is inclined well with different fracture geometry,curving fracture,tiny fracture,narrow fracture and abnormity operation pressure near well wall affect operation process.by analyzing nfluence of well deviate on fracture split,fracture geometry,operation pressure,find out the difference between straight well and high angle deviated hole,and put forward homologize technics measures,field test showed the measures were feasibility.
出处
《石油钻采工艺》
CAS
CSCD
北大核心
2005年第B06期61-63,共3页
Oil Drilling & Production Technology
关键词
大斜度井
压裂
裂缝弯曲
微裂缝
压力异常
high angle deviated hole fracturing curving fracture tiny fracture pressure abnormity
