测井技术2011，Vol.35Issue(2)：104-111,8.
天然气水合物储层测井响应与评价方法综述
Review on Logging Responses and Evaluation Methods of Natural Gas Hydrated Reservoir
摘要
Abstract
Simply introduced are the physical & chemical properties, forming conditions, existing models of gas hydrate, and logging responses and evaluation methods for gas hydrate reservoir. The log responses prove that several logs, such as natural gamma ray log, caliper log, density log, neutron log, acoustic log and resistivity log, have obvious responses in gas hydrate reservoir. A combined resistivity-acoustic log is the most effective method for identifying the gas hydrates. The present logging technologies have difficulties in such reservoir assessments. Since gas hydrates easily accumulate in the tundra, and high frequency dielectric log is the best way to tell the hydrate from ice, so it's better to use LWD log. In disperse marine sediments, the wireline log has much poor reliability, therefore, the LWD log may help strengthen the reliability, and to further enhance this reliability, we should improve log resolutions. Porosity of the hydrate-bearing reservoir is higher, so it is hard for core boring. Since there is always hydrate decompositing in the process of core transportation from well head to lab, storage in the core chambers and second core samplings, etc., so, the obtained test data will not be very accurate. At last, the difficulties are pointed out in gas hydrate evaluation based on present logging technologies.关键词
测井评价/天然气水合物/测井响应/特征Key words
logging evaluation/ natural gas hydrate/ logging responses/ feature分类
天文与地球科学引用本文复制引用
范宜仁,朱学娟..天然气水合物储层测井响应与评价方法综述[J].测井技术,2011,35(2):104-111,8.基金项目
中国石油天然气集团公司资助课题"岩石物理性质及测井响应机理研究"(中石油科技2008A-2701) （中石油科技2008A-2701）
