太古界潜山岩石物性和弹性参数的实验分析  

Experimental Analysis for the Physical and Elastic Parameters of Archean Buried Hill Rock

作　　者：张守伟[1] 孙建孟[1] 苏俊磊[1] 甘露[2] 

机构地区：[1]中国石油大学地球资源与信息学院,山东青岛266555 [2]中国石化胜利石油管理局测井公司,山东东营257096

出　　处：《测井技术》2010年第6期522-526,共5页Well Logging Technology

基　　金：国家重大科技专项(2008ZX05014-004-006HZ)

摘　　要：通过对东营坳陷太古界潜山油气藏埕古×井进行取样,对储层花岗岩和煌斑岩2类岩性测试岩石的孔隙度、渗透率、密度、电阻率、波速等参数通过交会图进行分析、研究储层段其岩石的物理参数变化规律;实验拟合公式有助于裂缝性储层识别与预测;实验测试发现,煌斑岩孔隙度较大,声波速度低,是良好的储集层;花岗岩弹性波速较大,岩心致密孔隙度较低。饱和流体后,煌斑岩比花岗岩波速随电阻率和应力的增大而变大,干燥岩心随应力的增大泊松比增大,饱和水泊松比随应力的增大而逐渐减小,波速和泊松比随着压力的增高都趋于一常数值。实验分析结果对东营坳陷太古界潜山内幕油气藏的勘探和开发起到一定的参考价值。On the basis of core data acquisition from Chenggu×well in the Archean buried hill reservoir,the porosities,permeabilities,densities,resistivities and wave velocities of granite and lamprophyre rocks in this reservoir are measured through crossplots,and furthers,from which analysed and obtained are the physical parameters of the reservoir rocks.The experiment matched equations are helpful in fractured reservoir identification and prediction.It is found from the experiments that lamprophyre is a better reservoir because its porosity is bigger and sonic wave velocity is slower;The elastic wave of the granite is faster and its compacted core porosity is lower.After being saturated by fluids,the lamprophyre is more sensitive than the granite.The wave velocity of the former changes with the increase of resistivity and stress,but the Poisson＇s ratio of the dried cores increases as the stress increases.The saturated water＇s Poisson ratio decreases as the stress increases.The wave velocity and Poisson ratio are nearly normal values as the pressure goes up.The experimental results provide a reference for the exploration and development of Archean buried hill reservoir in Dongying depression.

关 键 词：岩石物理实验 太古界潜山 花岗岩 煌斑岩 波速 

分 类 号：P631.84[天文地球—地质矿产勘探]