渤南洼陷深层裂解气成藏条件分析  

Cracked gas accumulation conditions in deep Bonan Sag

作　　者：李琳琳[1] 查明[1] 陈中红[1] 卢绪龙[1] 

机构地区：[1]中国石油大学,山东东营257061

出　　处：《特种油气藏》2009年第3期38-40,43,共4页Special Oil & Gas Reservoirs

基　　金：胜利油田"十一五"重点资助项目"胜利山东探区中深层天然气成藏地质基础";国家"十五"科技攻关项目"济阳凹陷复杂隐蔽油气藏地质评价和勘探关键技术研究"(2001BA605A-09)

摘　　要：对渤南洼陷深层裂解气成藏条件的分析表明,气藏气源主要来自沙四上亚段高成熟烃源岩,地温控制裂解气生成和分布;各类扇体及次生孔隙是深层裂解气成藏最佳储集体和储集空间,溶蚀作用和裂缝的发育改善了储集层条件,提高了储层含气性;优质盖层为裂解气成藏提供了良好的保存条件;超压和流体势控制了油气运移和聚集,形成了构造、岩性等类型的裂解气藏。The source of deep cracked gas in Bonan Sag originated from the highly matured source rock in the upper sub-section of Es_4.Geotemperature controlled the generation and distribution of cracked gas.Various fans and secondary pore serve as reservoir space for deep cracked gas accumulation.Denudation and fractures contribute to favorable reservoir conditions and gas-bearing capacity. High-quality cap rock soundly preserves cracked gas accumulation.Hydrocarbon migration and accumulation were controlled by overpressure and fluid potential,thus forming structural and lithologic reservoirs.

关 键 词：裂解气 地温 沉积相 储层条件 渤南洼陷 

分 类 号：TE122.1[石油与天然气工程—油气勘探]