摘要
碳酸盐岩储集空间主要受成岩作用制约。早期成岩作用(胶结、机械压实和自生矿物生长)使原有孔隙破坏,储集空间减少。浅埋藏环境受淡水淋滤,可使储集空间提高。深埋藏阶段是聚烃期储集空间形成的主要过程,形成的储集空间是烃类聚集的有效空间。白云石化、岩石受应力或流体压力作用产生的破裂作用和酸性水的溶蚀作用可使储集空间提高。确定聚烃期的方法有埋藏分析法、镜质体反射率法、有机包体测温法、牙形石色变法和数学模型法。
Reservoir space in carbonates is mainly controlled by diagenesis. Early diagenesis (Cementation, mechanical compaction and growth of autogenetic minerals) may destroy the primary pore and decrease reservoir space. Shallow buried enviroment may increase reservoir space by leaching of fresh water. Deep buried stage is the main forming process of reservoir space during hydrocarbon accumulating stage. This space is the efficient space for hydrocarbon accumulation. Dolomitization, fracture of rocks and corrosion of acidic water , which increase reservoir space, are construction type of diagenesis. The methods for determination of hydrocarbon accumulating stage include analysis method of buried history, reflectance method of vitrinite, temperature measurement of organic inclusions, color variation of con-odont and mathematic model.
出处
《地质科技情报》
CAS
CSCD
北大核心
1992年第2期53-58,共6页
Geological Science and Technology Information
关键词
碳酸盐岩
聚烃期
储集
石油
天然气
Carbonate, oil-gas reservoir condition, diagenesis, hydrocarbon accumulating stage, reservoir space
