墨西哥复杂盐构造精细识别及构造样式分析

Fine identification of complex salt structures in Mexico and analysis of salt related structural styles

与常规的地层不同,盐岩体具有较低的屈服压力,在地下往往以流动形变为主,这种流动变形使得盐岩对研究区的生储盖圈运保都有直接影响。快速有效的识别盐岩及其形成多种类型的相关构造是研究的重中之重。本文以墨西哥两个盐相关盆地为研究区,通过多年持续的盐岩活动分析,确定了盐岩的地球物理响应特征,建立了一套行之有效的盐相关构造精细识别技术流程,以此为指导进行盐相关构造落实分析,并对主要构造样式进行归纳总结,对墨西哥,乃至盐构造广泛发育的塔里木、四川、非洲等地都有较好的指导意义。

Different from conventional strata,salt has low yield pressure,and it is often dominated by flow deformation underground.This flow deformation makes salt have a direct impact on the all aspects of oil and gas accumulation.It is the top priority of research on rapid and effective identification of salt and their formation and various types of related structures.Taking the two salt basins in Mexico as the study area,through the analysis of salt activities for many years,this paper determines the geophysical response characteristics of salt,establishes a set of effective technical process for identification of salt related structures,takes this as a guide to carry out the implementation analysis of salt related structures,summarizes the main structural styles,and summarizes Mexico,and even Tarim,Sichuan and other places have better guiding significance.