摘要
苏里格气田苏20区块主力产层为二叠系三角洲沉积储集层。为解剖该气田形成的内在规律,分析天然气富集因素,对该区储集层岩石类型、组分特征、成岩作用、孔隙演化、储气层物性及孔隙类型开展研究。研究表明,岩屑石英砂岩的残余粒间孔和火山物质溶蚀孔是油气储集的主要孔隙类型,属于低孔隙度、低渗透率类型;结合该区的气源岩分布、圈闭类型和天然气运聚特征研究,指出运移通道、储集层物性及生烃强度是天然气富集规律的主要影响因素。
The key production zone of Su 20 Block in Sulige Gasfiled is the delta sedimentary reservoir in Permian System,in order to dissect the internal rules during the forming period of the gasfiled and analyze the natural gas enrichment factors,the research was carried out on the rock type,component features,diagenism,pore evolution,reservoir property and pore type of the reservoir.The study showed that the main pore types are residual intergranular pore in cutting quartz sandstone and karst pore in volcano material,which belong to the types of low porosity and low permeability.According to the study on the features of the gas source rock distribution in that area,trap type and the features of natural gas migration passage,it was pointed out that the migration and aggregation,reservoir property and the hydrocarbon generation intensity are the main influencing factors on the natural gas enrichment rules.
出处
《录井工程》
2010年第3期51-55,共5页
Mud Logging Engineering
