鄂尔多斯盆地西缘横山堡区块发育一系列北北东向逆冲断层,大致呈等间距、侧列式平行展布.平面上,断裂整体呈现东西分带的特征,可划分出3套断裂系统:西部反转断背斜断裂系统、中部花状断裂系统、东部反转逆冲断裂系统;剖面上,发育多种逆冲断层控制的断背斜、花状及"Y"形等构造样式.通过分析横山堡周边刘家庄及胜利井气田的成藏特点,认为断层是油气成藏的主控因素.基于不同的断层组合特征分析,提出反转构造和花状构造两类成藏模式.

In Hengshanbu block on the west edge of Ordos Basin, a series of NNE thrust faults have been developed, which are roughly evenly spaced and parallel. It is shown that the faults distributed in east-west zoning on the plane, which can be divided into three sets of fault systems, including the inversion of faulted anticlinal structures in the west and flower structures in the centre, and the inversion of thrust faults in the east. In profile, many kinds of structural styles, such as anticlinal, flower structure, controlled by thrust fault, have been developed. It is concluded that fault is the main controlling factor for oil and gas accumulation by analyzing the reservoir characteristics of Liujiazhuang gas field and Shengli gas fields around Hengshanbu block. Based on the combination of different faults, two types of accumulation models, namely inversion structure and flower structure, are proposed.