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精细构造研究是油藏描述的重要组成内容 ,它主要是利用多种手段和方法重新认识和建立油藏的三维构造形态和特征 .牛居油田牛 1 2断块平面上是一个近东西向延伸的 ,南、北和西三面均为断层遮挡 ,一面开口的长条型断块 .区域构造应力场控制了该断块的构造面貌特征 ,形成的多期、多组断裂彼此相互叠加、相互改造和相互影响 ,总体上表现为断块内以四级断层为主 ,断层的主要活动时期为沙一段 -东营组 ,活动强度较弱 ,断块的构造面貌具有继承和发展两方面相结合的特点
The study of fine structure is an important part of reservoir description, and it mainly uses a variety of means and methods to re-understand and establish the three-dimensional structural shape and characteristics of the reservoir.The Cathay Field Niu 12 block is a near east-west extension South, North and West are fault-cut, open-ended long fault blocks.The regional tectonic stress field controls the tectonic features of the fault block, and the multi-period and multi-set faults formed by the faults superimposed on each other and transformed each other And the interaction between them. Generally speaking, there are four faults in the fault block. The main active period of the fault is the Sha-1 Member-Dongying Formation, which has weak activity intensity and the tectonic features of the fault block have the characteristics of inheritance and development