托甫台区块TP37井区奥陶系油藏剩余油潜力分析

Ordovician reservoir in tp37 well area of Tuofutai block Remaining oil potential analysis

托甫台区块奥陶系油藏位于阿克库勒凸起西南倾末端。多期构造运动的隆升、挤压等作用造就了类型多样的断裂体系及其伴生构造形态,形成一系列不同级次、多期叠加的断裂系统。其中,TP12CX断裂带是区内规模最大的Ⅰ类断裂带,TP37井区位于TP12CX北东向主干断裂南段。根据结构张量属性刻画,TP37井区断溶体具有明显的分隔特征,沿着TP12CX断裂走向由北至南划分为五段。通过动静态资料综合分析现开发阶段井网平面储量动用状况,认为位于4、5段中间的W2井以南仍有井控低动用储量,W2井可向南部侧钻,生产后期与南部5段邻井建立注采井网。

The Ordovician reservoir in Tuofutai block is located at the southwest plunging end of Akekule uplift.The uplift and compression of multi-stage tectonic movement created various types of fault systems and their associated structural forms,forming a series of fault systems with different levels and multi-stage superposition.Among them,tp12cx fault zone is the largest class I fault zone in the area.Well tp37 is located in the south section of tp12cx ne main fault.The formation of the fault is mainly controlled by tensile stress.According to the characterization of structural tensor attributes,the fault solution in tp37 well block has obvious separation characteristics,and is divided into five segments from north to south along the strike of tp12cx fault.Through comprehensive analysis of dynamic and static data on the production status of plane reserves of well pattern at the current development stage,it is considered that there are still well controlled low production reserves in the south of well W2 located in the middle of section 4 and 5.Well W2 can be sidetracked in the south,and an injection production well pattern can be established with adjacent wells in Section 5 in the south in the later stage of production.