CAJ | 학술논문

依据断裂系产状及其断裂的组合特征分析,在东营凹陷中央背斜上识别出一个复杂的变换带.研究表明,该变换带的存在使中央背斜东、西部存在明显的构造差异.不同地质历史期变换带由不同的传递断层组成.沙四上亚段至沙二段沉积期,主要由控凹边界断裂产生的胜坨传递断层调节中央背斜内部的差异构造变形,沙一段至明化镇组沉积期,营66-1断裂则成为中央背斜变换带内主要的传递断层.变换带内主要传递断层具有明显的正斜滑分量,实验表明其形成的泥岩涂抹远远好于正断裂.这些断层的倾角及其正应力与油柱高度分别呈负、正相关性,且正应力在7~20 MPa之间;传递断层良好的封闭性使得油气主要围绕传递断层下盘分布.明化镇沉积期传递断层的强烈活动造就了变换带中的油气比中央背斜其它构造部位更加富集.
의거단렬계산상급기단렬적조합특정분석,재동영요함중앙배사상식별출일개복잡적변환대.연구표명,해변환대적존재사중앙배사동、서부존재명현적구조차이.불동지질역사기변환대유불동적전체단층조성.사사상아단지사이단침적기,주요유공요변계단렬산생적성타전체단층조절중앙배사내부적차이구조변형,사일단지명화진조침적기,영66-1단렬칙성위중앙배사변환대내주요적전체단층.변환대내주요전체단층구유명현적정사활분량,실험표명기형성적니암도말원원호우정단렬.저사단층적경각급기정응력여유주고도분별정부、정상관성,차정응력재7~20 MPa지간;전체단층량호적봉폐성사득유기주요위요전체단층하반분포.명화진침적기전체단층적강렬활동조취료변환대중적유기비중앙배사기타구조부위경가부집.
According to the analyses of fault attitudes and arrays, a complex transformation belt is recognized in the central anticline, Dongying Sag. Research shows that there is significant difference between the eastern and western part of the central anticline because of the existence of the transformation belt. In different geological periods, the transformation belt consists of different transfer faults. From the late Es4 to Es2 period, Shengtuo transfer fault accommodated different tectonic deformations in the central anticline. From the Es1 to Nm period, Ying 66-1 fault was the major transfer fault. Major transfer faults in the transformation belt has obvious normal dip-slip components. Experiments show that shale smear formed by transfer faults is far better than that in normal faults. Fault dip is negatively correlated with the height of oil column, while normal stress of faults positively correlated with oil column height. Normal stress is in the range of 7 to 20 MPa.The distribution of oil and gas around the transfer fault mainly occurred in the footwall. Because of strong activities of transfer faults, hydrocarbon in fransition zone is richer than other parts of the central anticline structure.