大厚层致密砂砾岩油藏直井多段压裂开发  

Development of Multiple-fracturing Vertical Wells in the Thick Layer of Dense Glutenite Reservoir

作　　者：崔传智[1] 陈鸿林 高立群[2] 

机构地区：[1]中国石油大学(华东)石油工程学院,青岛266580 [2]中国石油新疆油田分公司勘探开发研究院,克拉玛依834000

出　　处：《科学技术与工程》2017年第34期55-62,共8页Science Technology and Engineering

基　　金：国家重大科技专项(2016ZX05010)资助

摘　　要：针对纵向厚度比较大的低渗砂砾岩油藏,需选用直井压裂多段纵向裂缝的开发方式,采用数值模拟的方法展开研究.首先对比了分别采用分支水平井和多段压裂直井两种开发方式在厚层低渗油藏里的效果;然后分析了裂缝导流能力、供油面积、地层渗透率等产能影响因素,作出裂缝长度、C_f/K_m(裂缝导流能力与地层渗透率之比)与累产的图版以用于压裂设计优化,同时研究了韵律与极差对开发的影响;最后研究了裂缝长度、高度、间距分布等布缝原则,以指导实际压裂方案。When the vertical thickness of low permeability glutenite reservoir is pretty large,it is necessary to develop the vertical well with multiple fractures,the method of numerical simulation is adopted to study. Firstly,the development effects in low permeability reservoir are compared with large thickness between the multi-branch horizontal well and the multiple-fracturing vertical well; then the productivity influence factors such as the fracture diverting capacity,drainage area and formation permeability are analyzed; the plates of the length of fractures,C_f/K_m（ the ratio of fracture diverting capacity and formation permeability） and production are made for fracturing design optimization,and the influence of rhythm and permeability range to the development is studied; finally,the fracture-arranging principle including the length,height and spacing of fractures is explored.

关 键 词：致密油藏 多级压裂 直井 数值模拟 厚层 

分 类 号：TE348[石油与天然气工程—油气田开发工程]