摘要
为揭示基准面旋回对同类微相在不同旋回阶段河流相储层物性差异的影响,运用高分辨率层序地层沉积动力学原理,结合各项统计学数据和岩心化验资料,对胜坨油田二区沙二段7砂层组河流相储层物性差异主控因素进行分析,明确了基准面旋回对河流相储层在不同旋回阶段储层物性差异的控制机理及分布特征,并建立了不同级次基准面旋回内河流相储层孔渗测井解释模型。结果表明:不同级次基准面升降引起可容纳空间与物源供给条件的改变,导致不同旋回阶段河流相储层沉积环境出现差异,是影响不同基准面旋回阶段河流相储层物性差异的主要因素,在此基础上建立的基准面旋回影响下的相控孔渗测井解释模型使研究区目的层河流相储层物性测井解释精度得以提高。
To identify the influence of base level cycle on the differences of the reservoir quality among the fluvial reservoir at different stages of base level cycle, the main controlling factors of fluvial reservoir quali- ty in Es72 Formation of 2 block in Shengtuo Oilfield were analyzed based on the sediment dynamic analysis of high resolution stratigraphic sequence and quantitative analysis of core testing and statistical data. The control mechanism of base level cycle on the differences of the reservoir quality among the fluvial reservoir at different stages of base level cycle is identified. The pattern of the reservoir quality among the fluvial res- ervoir at different stages of base level cycle is confirmed. The results show that the diversity of sedimentary environment of reservoir at different stage of base level cycle was caused by the variation of accommodate space and sediment supply due to the changes of the base level in different scale. On that basis, the base- level cyclic influenced facies controlling porosity-permeability log interpretation model is established. The porosity-permeability logging interpretation precision is improved for the target layer in study area.
出处
《天然气地球科学》
EI
CAS
CSCD
北大核心
2013年第3期574-581,共8页
Natural Gas Geoscience
基金
国家科技重大专项(编号:2011ZX05011-001)
国家科技重大专项(编号:2011ZX05024-001)
国家自然科学青年科学基金项目(编号:40902035)联合资助
关键词
基准面旋回
胜陀油田
河流相储层
测井解释
Base-level cyclic
Shengtuo oilfield
Fluvial reservoir
Logging interpretation
