海上Z区天然气水合物地震研究与成藏远景预测  

Seismic Study and Accumulation Prediction of Natural Gas Hydrate in a Sea Area

作　　者：唐志远[1,2,3] 郭清正 邓强 王敏 魏天罡 

机构地区：[1]中海油能源发展工程技术分公司,天津300457 [2]天津普达软件技术有限公司,天津300457 [3]中国地质科学院力学研究所,北京100020 [4]东北油气分公司勘探开发研究院,吉林长春130026 [5]中海油天津分公司,天津300457

出　　处：《西安石油大学学报（自然科学版）》2016年第1期29-36,共8页Journal of Xi’an Shiyou University（Natural Science Edition）

基　　金：国家重点基础研究规划"973"项目(编号:2011CB201103)

摘　　要：基于叠前时间偏移地震资料对海区天然气水合物进行研究,提出一种将地质、地震资料相结合以预测天然气水合物矿藏的研究方法。首先结合物源、构造和沉积等资料进行地质分析,确定天然气水合物有利成藏区域的地质条件,然后在叠后振幅属性分析的基础上,分析了水合物地震BSR的基本响应特征,结合地质成藏条件,将本区域BSR分为4种基本类型。最终在叠前反演的基础上,预测水合物及其游离气的存在,圈定出水合物分布范围。认为水合物在研究区域海底浅层广泛分布,并且其分布受气源条件、储集空间、温度和压力条件同时控制。The natural gas hydrate in the sea area locating in the northern part of a Cenozoic Basin is studied based on pre-stack timemigration seismic data, and a method for predicting natural gas hydrate reservoirs by combining geological data with seismic data is pro-posed. Firstly, carry out geological analysis based on gas source, structure and sedimentary data to determine the geological conditions fa-vorable to natural gas hydrate accumulation, and then analyze the seismic characteristics of BSR （bottom simulating reflector）based onthe analysis of post-stack seismic profile,the BSR is divided into four types. Finally, predict the distribution of natural gas hydrate andfree gas based on gas pre-stack inversion. According to prediction result,it is held that natural gas hydrate widely distributes in the seaarea, and its distribution is influenced by gas source condition, storage space, and temperature and pressure conditions.

关 键 词：天然气水合物 BSR 水合物稳定带 储层预测 

分 类 号：TE122.1[石油与天然气工程—油气勘探]