碳酸盐岩岩溶型储层的地球物理响应特征分析  

GEOPHYSICAL CHARACTERISTICS IN CARBONATITE CARST RESERVOIRS

作　　者：陈广坡 潘建国 管文胜[2] 黄林军 谭林[2] 

机构地区：[1]中油勘探开发研究院西北分院 [2]中油塔里木油田分公司勘探开发研究院

出　　处：《天然气勘探与开发》2005年第3期43-46,共4页Natural Gas Exploration and Development

摘　　要：碳酸盐岩岩溶型储层是塔里木盆地轮南地区重要的储集层。根据钻井揭示的岩溶型储层,对测井、地震响应以及地震各种属性的特征进行了标定、对比和归纳分析指出碳酸盐岩岩溶的缝洞型储层,在测井上的响应特征主要为低伽玛、具有正幅度差异的双侧向低电阻率等特征;利用模型正演和岩溶精细标定技术,确定了碳酸盐岩岩溶缝洞型储层在潜山表面表现为弱振幅、弱连续、低速度、低频率的反射特征;而其内幕的缝洞系统则表现为,强振幅、低频率、低速度的杂乱反射特征;在地震属性上潜山表面岩溶型储层具有低相干、弱振幅、低阻抗等特征;而在潜山内幕则表现为低相干、强振幅、低阻抗的特征。Carst reservoirs are main in Lunnan area of Tarim Basin. According to drilling data , we analyze the characteristics of well logging, seismic response and seismic attribute of carst reservoirs. It demonstrates that in carbonate reservoirs with karst and vugs, its well-log response is featured by low gamma and dual-lateral electric resistivity with positive difference . According to model forward and karst fine calibration technology, it indicates reservoirs in surface of burial hill are characterized by weak amplitude, low connectivity, low velocity and low frequency ,but strong amplitude, low frequency, low velocity and disorder are for the its inner vug system. As for seismic response, karst reservoirs in surface of burial hill are characterized by low coherence, weak amplitude and low acoustic impedance , however low coherence, strong amplitude, low acoustic impedance are for its inner vug system.

关 键 词：碳酸盐岩 岩溶型储层 地球物理响应 地质条件 油气资源 地震响应 

分 类 号：P618.13[天文地球—矿床学]