利用声波时差测井信息定性判断断层封闭性  

Qualitative judgment of fault sealing by using acoustic logging information

作　　者：刘玉梅[1] 杨桂茹[2,3] 武国华[4] 

机构地区：[1]中国地质大学(北京)能源学院,北京100083 [2]中国石油勘探开发研究院,北京100083 [3]华北油田勘探开发研究院,河北任丘062552 [4]胜利石油管理局孤东采油厂,山东东营257237

出　　处：《大庆石油学院学报》2009年第2期6-9,共4页Journal of Daqing Petroleum Institute

基　　金：高等学校博士学科点专项科研基金项目(20050491001);教育部重点实验室开放基金项目(EEL2008-6)

摘　　要：断层的力学性质是决定断层封闭性的内在因素,不同力学性质的断层又与岩石密度、孔隙结构、断层落差、断层形成时代、断层埋藏深度和断层倾角等因素有关,而这些因素在声波测井信息具有不同的特征.研究不同声波时差测井信息(变化幅度和异常范围)可以简单直观地定性判断断层的封闭性.以红柳地区断层为例,通过分析断层上下盘及断点处声波时差异常值大小,判断断层的力学性质及断裂充填物的致密程度,从而确定断层的封闭性,并总结出3种声波时差判断断层封闭性的判别模式.Mechanical properties of a fault is the internal factors to determine the sealing of the fault.The fault with different mechanical properties relates to rock density,pore structure,the gap fault,fault age,fault buried deep,fault angle,and so on.These factors in the acoustic logging information have different characteristics.Therefore,the study of different acoustic logging information(abnormal changes in magnitude and scope)can be simple and intuitive qualitative judgment of the sealing ability of the fault.According to this principle,for example,Hongliu regional fault,by analyzing the size and features of unusual acoustic travel time on the upper wall and footwall and the breakpoint,we analyzed and judged mechanical properties of the fault and the dense of the filling materials in the fault belt,determining the enclosing ability of the fault and summing up the three model to judge the sealing ability of the fault.

关 键 词：声波时差 定性判断 断层力学性质 断层封闭性 

分 类 号：P618.130.2[天文地球—矿床学]