碳酸盐岩纵波速度响应特征试验研究  

Experimental Study of Carbonate Rock Wave Velocity Response

作　　者：豆宁辉[1] 赵向阳[1] 余夫 金衍[3] 潘堤[1] 

机构地区：[1]中国石化石油工程技术研究院,北京100101 [2]宝钢股份有限公司研究院钢管技术中心,上海200000 [3]中国石油大学(北京),北京102249

出　　处：《科学技术与工程》2016年第16期9-12,34,共5页Science Technology and Engineering

基　　金：国家重大专项(2011ZX05031-004)资助

摘　　要：碳酸盐岩地层压力预测是国内外研究难点,主要原因是纵波速度响应特征不明确,传统的地层压力预测模型不能用。为了解决这个技术难题,通过设计室内试验对碳酸盐岩纵波速度响应特征进行了研究,分析得到了影响纵波速度变化的主要因素,即碳酸盐岩骨架速度取决于岩石骨架特征,决定了纵波速度的变化趋势;纵波速度的小幅变化是由孔隙压力引起的。验证了碳酸盐岩地层异常高压的地球物理和孔隙弹性响应特征理论,从室内试验角度对基于孔隙弹性力学理论建立的波速方程的准确性进行了验证,并为建立碳酸盐岩地层孔隙压力预测模型提供了理论依据。The pressure prediction of carbonate formation is of difficulties in research,the main reason is the Pwave velocity response characteristics are not clear,the traditional model can not be used. To solve this technical problem,response characteristics were was studied through laboratory experiments designed to carbonate rocks Pwave velocity,discussed the main factors influencing the P-wave velocity changes. The carbonate rock skeleton speed depends on the rock＇s characteristics,determines the trends P-wave velocity. Small changes in P-wave velocity is caused by the pressure. Verify the carbonate rocks abnormally high pressure of geophysical response characteristics of the theory of elasticity and porosity,from the perspective of laboratory tests to establish the accuracy of the theory of elasticity based on pore velocity equations were verified,establishment of carbonate formation pore pressure prediction models provided.

关 键 词：地层压力 纵波速度 碳酸盐岩地层 

分 类 号：P554[天文地球—构造地质学]