摘要
长期以来渭河盆地被认为是油气勘探的禁区,通过对固市凹陷张家坡组烃源岩、储层、盖层和圈闭等油气地质条件的分析,认为张家坡组烃源岩具有较典型的生物气地球化学特征。河湖相砂岩物性良好,盖层封盖能力强,潜在发育有岩性、地层和断层圈闭,渭河盆地具有形成生物气的基础地质条件,固市凹陷北缓坡是生物气勘探重点区域。渭河盆地生物气勘探还存在勘探难度大、开发周期长等问题,通过理论创新、科技投入、政策支持及多元化发展等途径加以解决,渭河盆地生物气勘探前景不容低估。
For a long time,Weihe Basin was believed to be the forbidding zone for oil/gas exploration. Through the analysis on oil /gas geological conditions such as source rock,reservoir,caprock and traps in Zhangjiapo Formation in Gushi sag,it is believed that source rocks are characterized by geochemical property of bio- gas. The property of river and lake sandstone is favorable,the caprock has strong sealing capacity and lithological,stratigraphic and fault traps are potentially developed. Weihe Basin has the basic geological conditions to generate bio- gas. The northern gentle slope in Gushi Sag is the major area to explore bio- gas. There are also problems such as difficult exploration and long period of development of bio- gas in Weihe Basin. These difficulties can be solved through theoretical innovation,strengthening technological investment and other means. The prospect for the bio- gas exploration in Weihe Basin shall not be underestimated.
出处
《特种油气藏》
CAS
CSCD
北大核心
2015年第1期52-55,153,共4页
Special Oil & Gas Reservoirs
基金
陕西省科研攻关项目"渭河盆地低成熟页岩气富集规律研究"(SGT-KY2013-004)
关键词
渭河盆地
固市凹陷
张家坡组
生物气
水溶气
形成条件
Weihe Basin,Gushi Sag,Zhangjiapo Formation,bio-gas,water soluble gas,forming conditions
