地层厚度系数法研究查干凹陷构造演化  

APPLICATION OF FORMATION THICKNESS COEFFICIENT TO STUDY TECTONIC EVOLUTION OF CHAGAN SAG

作　　者：徐会永[1,2] 蒋有录[1] 张立强[1] 王金友[1] 欧阳睿[3] 

机构地区：[1]中国石油大学地球资源与信息学院,山东东营257061 [2]中国石油大学期刊社,山东东营257061 [3]中国石化中原油田分公司勘探开发研究院,河南濮阳457001

出　　处：《西南石油大学学报（自然科学版）》2009年第2期45-48,共4页Journal of Southwest Petroleum University(Science & Technology Edition)

摘　　要：根据沉积补偿原理,提出地层厚度系数研究构造运动的方法,并分析了其研究步骤及适用范围。依据查干凹陷下白垩统关键层位地层厚度发育特征,利用沉积厚度法研究其构造活动,指出了影响整个凹陷沉积过程中的关键时期。结果表明:查干凹陷从巴二期,经苏一至苏二下亚段沉积时期,沉积中心发生改变,显示出明显呈北西—南东向的"跷跷板"构造运动。在这一认识基础之上进一步研究了查干凹陷构造演化,认为:白垩纪以来经历了裂陷阶段、断拗转换阶段、拗陷阶段和反转阶段,为查干凹陷今后的研究奠定了基础。Based on the rule of sedimentary compensation,the formation thickness coefficient is applied to study tectonic movement.The artical gives the procedure and the range of application.This new method is used to study tectonic movement of Chagan Sag in Lower Cretaceous.The result shows that in this area,a tectonic movement which is named 'seesaw' developed.The critical time of this tectonic movement was between the first period of Suhongtu Formation (K1s1) and the second period(K1s2).Based on the conclusion above,characteristics of structural evolution is studied and four stages are involved,faulting stage,rifting and depressing trasmitting stage,depressing stage and reversing stage.This conclusion can provide suggestions for studying structural evolution and future exploration.

关 键 词：查干凹陷 地层厚度系数 构造演化 断陷盆地 “跷跷板”运动 

分 类 号：TE121.1[石油与天然气工程—油气勘探]