中国变质岩火山岩油气藏类型及特征  

THE RESERVOIR TYPE AND CHARACTERIZATION OF METAMORPHIC AND VOLCANIC ROCK OF CHINA

作　　者：伍友佳[1] 刘达林[2] 

机构地区：[1]西南石油学院资源与环境学院,四川成都610500 [2]新疆石油管理局

出　　处：《西南石油学院学报》2004年第4期1-4,共4页Journal of Southwest Petroleum Institute

基　　金：四川省重点学科建设项目 (SZD0 414 )

摘　　要：我国的变质岩火山岩油气藏可分为四种类型 :基岩风化壳型、基岩断裂破碎带型、沉积岩中火山喷发岩型与沉积岩中火山侵入岩型。归纳我国变质岩火山岩油气藏特征 ,主要有 :(1)油藏类型多样 ,以基岩风化壳型为主 ;(2 )气藏与气顶油藏较少 ,以油藏为主 ;(3)油藏规模以小型为主 ,也有大型油藏 ;(4 )火山岩油气藏多于变质岩油气藏 ;(5 )油井产能高低悬殊 ,高产井分布主要受裂缝发育好坏控制 ;(6 )注水开发效果普遍较差 ,表现为高产井水窜严重而低产井长期难以见效 ;(7)油井及油田产量递减均大 ,有的油藏递减惊人 ;(8)油藏采收率不高 ,一般在 8%～ 15 % ,多数在11%～ 13%。There are a series of metamorphic and volcanic rock reservoir in China. They can be divided into four types that are basement rock weathering crust type, basement rock fracture belt type, volcanic rock eruption in sedimentary rock type and intrusive volcanic in sedimentary rock type. The characterizations of the metamorphic and volcanic rock are: ①The reservoir is multi-type, but the basement rock weathering crust is principal type. ②There are gas accumulation and gas cap oil accumulation, but the oil accumulation is principal. ③The small scale of oil accumulation is principal, but there is the big scale sometimes. ④The reservoir of volcanic rock is more multiple than metamorphic rock.. ⑤The production is very different. The production of some well is very high, but some production is low. The well of high production lies in near the fracture. ⑥The effect of the water injection isn't good. The water breakthrough of the well of high production is very fast and there isn't water absorption of the well of low production. ⑦The production decline of oil well and oilfield is very great. ⑧The recovery isn't high, they are 8%-15% or so, the principal recovery is 11%-13%.

关 键 词：变质岩 火山岩 油气藏类型 油气藏特征 

分 类 号：TE112.222[石油与天然气工程—油气勘探]