摘要
为定量刻画具有复杂叠置关系的扇三角洲储层单一河道砂体的时空分布特点,利用密井网区10口取心井岩心资料和588口井测井资料,以沉积学理论为指导,对辽河油田曙一区Du84块兴Ⅰ组扇三角洲前缘水下分流河道内单一河道砂体进行定量识别。结果表明:单一河道砂体边界识别标志包括高程差异、坝上孤立河道、厚薄厚特征、砂体侧向叠置和河道间沉积等5种类型;垂向叠置样式包括垂向叠置、错位叠置和孤立型叠置等3种类型;扇三角洲前缘水下分流河道呈NE-WS方向展布,从近源到远源位置河道分叉程度变高,宽度变窄,弯曲度增加,单砂体由垂向叠置型的连片分布变为孤立型的条带状分布。
In order to quantitatively describe and characterize the time-space distribution features of the individual channel sandbodies in the fan delta reservoirs with rather complicated overlying relationships,with the help of 10 coring well data and 588 logging well data in the dense spacing blocks,guided by the sedimentary theory,the quantitative identification was conducted for the sandbodies in Member XingⅠfan-delta-front underwater distributary channels of Block Du84 of Shu-1 area of Liaohe Oilfield. The achievements show that the boundary identifying marks of the sandbodies include the following five types：elevation difference,single channel on the mouth bar,thick-thin-thick character,sandbody lateral superimposition and inter-channel sedimentation; the vertical superimposition patterns are shown as follows：vertical superimposition,dislocation superimposition and separated one; the underwater distributary channels stretch in the direction of NE-SW,and from the proximal source to distal one,the degree of the channel divaricating becomes high,and the width of the channel becomes narrow,the amount of the channel deflection gets increased,for the individual sandbodies,the vertically superimposed distribution turns into separated one.
作者
刘慧盈
高志前
吴俊
张超前
LIU Huiying GAO Zhiqian WU Jun ZHANG Chaoqian(PetroChina Research Institute of Petroleum Exploration ＆ Development, Beijing 100083, China China University of Geosciences , Beijing 100083, China)
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2017年第1期17-21,共5页
Petroleum Geology & Oilfield Development in Daqing
基金
国家科技重大专项项目"大型油气田及煤层气开发"(2011ZX05032)
国家自然科学基金项目"潮控河口湾油砂储层构型及盖层完整性评价研究"(41472119)
关键词
单一河道砂体
边界识别标志
垂向叠置样式
定量表征
兴Ⅰ组
single/individual channel sandbody
boundary identifying mark
vertical superimposition pattern
quantitative identification
Member XingⅠ
