文南油田构造特征与形成机理分析

Analysis of Structure Feature and Forming Mechanism of Wennan Oilfield

周树青,潘道修,杨瑜贵,曾显磊

Zhou Shuqing, Pan Daoxiu, Yang Yugui, et al

中原油气高新股份有限公司采油四厂

The No. 4 Oil Production Division , Zhongyuan Oilfield Company , SINOPEC, Henan 457073 , P. R. China

文南油田从东到西可分为4 个构造带:文东滚动背斜带、文南地堑带、文西地垒带、文西斜坡带。在此基础上,引入“安德协森模式”和“板块构造理论”分析了文南油田形成机理:文南油田是在东濮凹陷基底隆起背景上,经过后期拉张应力场的作用形成的,沉积物的重力作用在构造的形成过程中起到不可忽视的作用。在三者的共同作用下,形成了文南油田现今复杂的构造模式,形成了多种类型的油气藏。

Wennan Oilfield lies in the south of Wenliu structure in the central uplift of Dongpu sag , it is controlled by three main fracture of NNE strike , there are four structure belts from east to west :Wendong rolling anticlinal zone Wennan graben zones ,Wenxi horst zones ,Wenxi Slope zones. Based on it ,analysis on the cause of structure formation of Wennan Oilfield using“Anderon modes ”and“ Plate structure theory”, it is pointed out :Wennan Oilfield forms complex strutcture modes and the types of hydrocarbon reservoir of present under the control of extensional tectonic stress field and the gravity in the basement uplift of Dongpu sag.