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复杂断块油藏因断层多,含油面积小而难形成规则的注采井网,因此其井网形式和井距要结合油藏的具体形状来确定,对于低渗透复杂断块油藏,压裂投产措施加剧了其地质复杂性。本文在某实际低渗透断块油藏的基础上建立了不同形态的断块油藏模型:四边形、三角形等,采用正交试验设计方法和PEBI网格剖分方法,分油井压裂、水井压裂、油水井同时压裂三种情况进行了压裂井网优化及裂缝参数优化,最后在压裂基础上进行井排距优选研究,为小断块油藏的开发提供一定的指导。
Complex faulted block reservoirs are difficult to form regular injection and production well patterns because of faults and oil-bearing areas. Therefore, the pattern of well patterns and well spacing should be determined according to the specific shape of the reservoir. For low-permeability complex fault block reservoirs, Cracking production has exacerbated the geological complexity. Based on an actual low-permeability fault block reservoir, different types of fault block reservoir models, such as quadrilateral and triangle, are established. Orthogonal experimental design method and PEBI gridding method are used to divide fractures of wells, Fracturing and oil-water well fracturing three cases were carried out fracturing well pattern optimization and fracture parameter optimization, and finally on the basis of fracturing well row spacing optimization research for small fault block reservoir development to provide some guidance.