海平面升降对海相临滨储层宏观非均质性控制机理——以塔里木盆地哈得逊东河砂岩储层为例  

Control Mechanism of Sea Level Rise and Fall on the Macroscopic Heterogeneity of Marine Reservoirs:An Example of the Donghe Sandstone Reservoir in the Hadeson Oilfield,Tarim Basin

作　　者：赵俊威[1,2] 徐怀民[1,2] 何翠[3] 江同文[4] 徐朝晖[1,2] 阳建平[4] 王超[4] 余义常 

机构地区：[1]中国石油大学(北京)地球科学学院,北京102249 [2]中国石油大学(北京)油气资源与探测国家重点实验室,北京102249 [3]中国地质大学(北京)能源学院,北京100083 [4]中国石油塔里木油田公司,新疆库尔勒841000

出　　处：《地质与勘探》2017年第3期590-598,共9页Geology and Exploration

基　　金：国家科技重大专项(2011ZX05009-003);国家自然科学基金(41302109)资助

摘　　要：本文研究海平面变化对海相单一亚相储层宏观非均质性的影响。以经典层序地层学理论为指导,应用岩心测试、测井数据,对哈得油田东河砂岩段临滨亚相储层宏观非均质性进行了分析,提出了海平面升降对临滨亚相储层宏观非均质性控制机理,确定了海平面相对变化控制的储层宏观非均质性分布模式。结果表明,准层序、准层序组及体系域内不同级次的海平面变化,对沉积物形成的水动力条件及沉积后所处表生环境产生较大影响,各项储层宏观非均质参数表现出明显的规律性,使准层序内单一临滨亚相储层宏观非均质性表现为向上减弱的变化趋势;准层序组内由于准层序堆砌特征差异,使退积式准层序组内临滨亚相储层宏观非均质性呈向上变强的特征,而进积式准层序组内表现为由强到弱的趋势;高位体系域内单一临滨亚相储层宏观非均质性总体表现为向上逐渐减弱。This work studied the influence of sea level change on the macroscopic heterogeneity of single marine subfacies reservoirs of the Donghe sand- stone shoreface subfacies in the Hadeson oilfield. Our study is based on core testing and well logging data, guided by the theory of classical sequence stratig- raphy. The control mechanism of sea level rise and fall on the macroscopic heterogeneity has been proposed and the distribution pattern of reservoir macro- scopic heterogeneity controlled by the relative sea level change has been determined. The results show that different orders of sea - level change in parase- quence, parasequence group and system tracts have a great impact on the hydrodynamic conditions of sediment formation and post - depositional environment. The reservoir macroscopic heterogeneity parameters show obvious regularities, which make the macroscopic heterogeneity of the single shoreface reservoirs in parasequenee characterized by weakening heterogeneity upward. Because of the parasequence accumulation characteristic differences in the parasequence group, the macroscopic heterogeneity of shoreface subfacies reservoirs is characterized by being stronger upward inside the retrogradational parasequence group. While inside the progressive parasequence group, it changes from strong to weak upward. In HST, the macroscopic heterogeneity of single shoreface suhfacies reservoirs has a general trend becoming weaker upward.

关 键 词：哈得逊油田 海相储层 东河砂岩 储层宏观非均质性成因 海平面变化 塔里木盆地 

分 类 号：P618.13[天文地球—矿床学] TE122[天文地球—地质学]