中国天然气聚集类型、特征及资源潜力预测  

Accumulation Types,Characteristics and Resource Potential Prediction of Natural Gas in China

作　　者：李君[1] 万东显 杨慎[1] 佘源琦[1] 王明磊[1] 高阳[1] 

机构地区：[1]中国石油勘探开发研究院廊坊分院,河北廊坊065007 [2]中国石油华北油田分公司器材供应处万庄钻井供应站,河北廊坊065007

出　　处：《非常规油气》2016年第4期1-11,共11页Unconventional Oil & Gas

基　　金：国家科技重大专项"中国大型气田形成条件;富集规律及目标评价(二期)"(2011ZX05007)资助

摘　　要：对天然气聚集类型及特征进行划分,并对其资源潜力进行重新计算,指出勘探方向。结果表明,天然气聚集可划分为源内滞留、近源阻滞、远源仓储3种类型,源内滞留聚集主要是指未经大规模运移的吸附气和游离气,典型气藏为煤层气和页岩气,资源量超100×10^(12)m^3;近源阻滞聚集是指天然气初次运移直接进入邻近储层,受致密储层毛细管阻力及盖层封盖的双重阻挡作用形成气藏,如近源大面积致密砂岩气,资源量为38×10^(12)m^3;远源仓储聚集是指天然气经过断裂、不整合面等优势输导通道二次运移进入各类圈闭形成的气藏,资源量为73×10^(12)m^3。3种聚集类型探明程度都非常低,剩余资源丰富,勘探前景好。源内滞留聚集、近源阻滞聚集是下一步天然气勘探的重要方向,远源仓储聚集中碳酸盐岩和逆冲构造深层是现实勘探领域。The types and characteristics of natural gas accumulation have been divided,and the resource potential was also calculated again,by which the exploration direction could be pointed out.The research results showed that natural gas accumulation can be divided into three major types,including source of retention,near source block and far source storage.Source of retention mainly refers to the adsorbed gas and free gas,which have not been migrated in large scale,and the total volume is up to 100×10^12m^3;Accumulation near source block refers to the migration of natural gas for the first time,and entering directly into the adjacent reservoir,which was trapped and covered by capillary force and caprock in the tight layer to form the gas reservoir,such as near-source large area of tight sandstone gas,the volume is about 38×10^12m^3;Far source storage refers to the gas reservoir formed by secondary migration through the passage of both frctures and unconformable surface,the volume is about 73×10^12m^3.The three types of accumulation are featured with very low degree of exploration,rich in remaining resource,and good prospect for exploration.The first two kinds of accumulation are the important directions to natural gas exploration in the near future,but the carbonate rocks and thrust structure in the far source storage accumulation are the practical exploration area.

关 键 词：天然气 聚集类型 聚集特征 资源潜力 有利区带 

分 类 号：P618.13[天文地球—矿床学]