低渗裂缝性碳酸盐岩储层应力敏感性评价及保护技术研究——以塔里木盆地奥陶系古潜山油气藏为例  

Stress sensitivity evaluation test and protective technique research on low-permeability fractured carbonate reservoir: a case of Ordovician buried hill hydrocarbon reservoir in Tarim basin

作　　者：舒勇[1] 鄢捷年[1] 

机构地区：[1]中国石油大学(北京)石油工程教育部重点实验室

出　　处：《中国海上油气》2009年第2期124-126,共3页China Offshore Oil and Gas

基　　金：国家自然科学基金资助项目(50574061)部分研究成果

摘　　要：在对塔里木盆地奥陶系古潜山低渗裂缝性碳酸盐岩储层地质特征进行分析的基础上,利用人工裂缝岩样进行了应力敏感评价试验。结果表明,试验岩样存在较强的应力敏感性,平均渗透率损失92.48%,裂缝宽度下降76.37%。基于储层应力敏感性试验分析,对目前使用的正电胶钻井液体系配方进行了改进,取得了良好的应用效果。The stress sensitivity evaluation test was made by using artificial fracture rock sample based on characteristic analysis on Ordovician buried hill low-permeability fractured carbonate reservoir in Tarim basin. Test results show that testing samples present strong stress sensitivity with 92. 48 percent loss of mean permeability and 76. 37 percent drop of fracture width. MMH drilling mud formula was improved according to analysis of stress sensitivity test to reservoir and the good application effect has been obtained.

关 键 词：低渗裂缝性碳酸盐岩储层 应力敏感性 储层保护 

分 类 号：TE122.23[石油与天然气工程—油气勘探] P618.130.2[天文地球—矿床学]