松辽盆地北部生物气和低熟气成藏主控因素  

CONTROLLING FACTORS FOR RESERVOIR FORMING OF BIOGENIC GAS AND LOW-MATURE GAS IN NORTHERN SONGLIAO BASIN

作　　者：王始波[1,2] 冯子辉[2] 梁江平[2] 万俭英[2] 王雪[2] 

机构地区：[1]成都理工大学沉积地质研究院,四川成都610059 [2]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》2010年第2期1-4,共4页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家“十五”重大科技攻关项目（2003BA613A）资助.

摘　　要：针对生物气和低熟气的地质特点，从生物气和低熟气的形成条件研究入手，深入分析源岩、构造、储层等对气藏的控制作用，认为松辽盆地北部具备较好的生物气和低熟气形成条件，生物气和低熟气资源丰富，初步计算资源量约1×10^12m^3，资源潜力巨大。气藏受气源岩、砂体和断裂3种因素控制；气源岩区控制气藏的宏观分布范围；薄层、砂地比10％～35％储集体控制了气藏的分布，沟通气源岩与砂体的断裂带是气藏聚集的有利地区。具有下生上储的成藏特点，主要为构造-岩性气藏类型。预测了生物气和低熟气气藏的有利分布地区，为下步勘探指明了方向。According to geological features of biogenic gas and low-mature gas, based on the formation conditions of biogenic gas and low-mature gas, this paper analyzes the controlling effects of source rock, structure and reservoir on gas reservoirs. The research concludes that there is good forming conditions for biogenic gas and low-mature gas in northern Songliao Basin, where is rich in resources with a preliminary calculated resource amount of 1 ×10^12m^3. Gas reservoirs are affected by three factors including gas source rock, sandbodies and fractures. Gas source rock zones control the distribution of gas reservoirs in the macroscopic range; thin layers and reservoir rock with sandstone-formation thickness ratio of 10% -35% control the distribution of gas reservoir; the fault zones communicating source rock and sand bodies are favorable distribution areas for gas accumulation. Northern Songliao Basin mainly has structural-lithologic gas reservoirs with characteristics of generation in the upper part and accumulation in the lower part. This paper predicates the favorable distribution areas of biogenic gas and low-mature gas and indicates next-step exploration prospects.

关 键 词：生物气和低熟气 形成条件与资源潜力 成藏主控因素 气藏类型 有利区预测 

分 类 号：TE122.111[石油与天然气工程—油气勘探]