松辽盆地主要次生岩性圈闭形成条件  

FORMATION CONDITION OF SECONDARY LITHOLOGIC TRAP IN SONGLIAO BASIN

作　　者：宋铁星[1] 师继红[1] 王雪峰[1] 

机构地区：[1]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《大庆石油地质与开发》2001年第4期17-18,21,共3页Petroleum Geology & Oilfield Development in Daqing

摘　　要：次生岩性圈闭是松辽盆地进入高成熟期后挖掘潜力的对象。次生岩性圈闭是由后期地质作用如构造作用、成岩作用以及地层压力作用形成的圈闭。松辽盆地次生岩性圈闭包括岩性上倾尖灭圈闭、成岩圈闭、致密储层圈闭以及泥岩裂缝圈闭等类型。物源方向和构造倾向以一定的方向相配合是形成岩性上倾尖灭圈闭的重要条件 ,即当沉积物源与构造倾向交角为 90°～ 2 70°时 ,尤其是交角为 180°时 ,易于形成砂岩上倾尖灭圈闭。成岩圈闭一般形成于成岩作用强烈的深部地层 。Secondary lithologic trap is the object of potential seeking of Songliao Basin in high maturity stage. It forms from later geologic action such as structural effect, diogenetic effect and formation pressure effect. Songliao Basin is a secondary lithologic trap including lithologic updip pinch out trap, diagenetic trap, tight reservoir trap and mud stone fracture trap. The matching in a certain direction of the provenance direction and structural dip direction is an important condition of the formation of lithologic updip pinch out trap. When the alternate angle between the sedimentary provenance and structural dip is 90°-270°,especially 180°, it is favorable for sand stone updip pinch out trap. Diagenetic trap usually forms in deep formations where diagenesis effect is strong, and it is the result of the formation multi porous and tight zone.

关 键 词：次生岩性圈闭 成岩圈闭 松辽盆地 形成条件 成岩作用 地质作用 

分 类 号：P618.130.1[天文地球—矿床学] TE12[天文地球—地质学]