海拉尔盆地苏德尔特构造带布达特群碎屑岩潜山油藏类型划分

综合利用岩心、测井、录井、生产测试等资料，对海拉尔盆地苏德尔特构造带布达特群碎屑岩潜山油藏类型进行了划分，提出了以圈闭成因与油贮形态为主要依据的潜山油藏分类方案。结果表明，苏德尔特构造带布达特群潜山油藏共划分为块状单斜断块型潜山油藏、不规则裂缝网络状剥蚀单斜断块潜山油藏、不规则裂缝网络状剥蚀褶皱断块潜山油藏、不规则裂缝网络状褶皱剥蚀断块潜山油藏、不规则裂缝网络状内幕单斜断块潜山油藏和不规则裂缝网络状内幕褶皱断块潜山油藏6种类型。研究区多存在不规则裂缝网络状潜山油藏类型，其特征是以多期裂缝构成网络状储层及受不整合面和断层影响而形成的有效裂缝网络体系。油藏内部具有强非均质性，不具有统一的油水界面，其宏观外部形态不完全受地层界线控制；当裂缝高度发育时，则地层连成块状，并具有统一的油水界面，可形成块状油气藏。

Classification of reservoir types of Budate group in clastic buried hills of Sudeerte structural zone,Hailaer Basin

According to the cores data,well logging,logging and production testing,types of Budate group in the clastic buried hills reservoir of Sudeerte structural zone in Hailaer Basin were classified,and a new classified project by the genesis of traps and shape of oil distribution was purposed.The buried hill reservoir can be divided into six types,that is,massive monocline fault block oil reservoir,irregular fractured network erosion-monocline fault block oil reservoir,irregular fractured network erosion-fold fault block oil reservoir,irregular fractured network fold fault block-erosion oil reservoir,irregular fractured network interior monocline fault block oil reservoir,irregular fractured network interior fold fault block oil reservoir.In the study area,the irregular fractured network buried hills pool shows the characters of multistage fractured network reservoirs which are network-like systems of effective fractures affected by uniformity and faults.The pool without a uniform oil-water interface possesses high heterogeneity,and it s macroscopical shape is controlled by stratigraphic boundary incompletely.When fractures are developed and connect together into block-like system,the pool also takes on a uniform oil-water interface and becomes a massive oil pool.