中国石油大学学报（自然科学版）2017，Vol.41Issue(5)：20-29,10.DOI:10.3969/j.issn.1673-5005.2017.05.003
渤海湾盆地东营凹陷东部孔店组红层储层特征及控制因素
Reservoir characteristics and controlling factors of red bed of Kongdian Formation in eastern Dongying Depression, Bohai Bay Basin
摘要
Abstract
Comprehensive analyses were implemented to investigate the sedimentary diagenetic characteristics and reservoir space genetic types of red beds, utilizing core observation, thin section identification, scanning electron microscope observa-tion and mercury injection experiment. A qualitative description of reservoir characteristics was combined with the quantita-tive characterization of porosity due to diagenetic modification. In addition, the main factors controlling the physical proper-ties of red beds were explored. It is demonstrated that during the deposition of red beds, the main environment was the alluvi-al fan-flooded lake-salty lake sedimentary system, and reservoirs were mainly developed in the alluvial fan, flooded lacustrine flat, flooded lacustrine sheet sandstone, and flooded lacustrine beaches and bars, in which the dominant pores are primary intergranular pores, residual intergranular pores, intergranular dissolution pores, and intragranular dissolution pores. Sedi-mentation and diagenesis are identified to be the main controlling factors:the former controlled the pore structure and physi-cal properties through influencing the grain size and maturity of red beds, while the latter determined the reservoir properties by compaction, cementation and dissolution. To be specific, the porosity decrease due to compaction was controlled by burial depth and fillings, the porosity loss due to cementation was determined by the eogenetic alkaline diagenetic environment, and the porosity increase due to dissolution was attributable to the acidity of the telogenetic sedimentary environment. Lastly, the porosity loss due to cementation and the porosity increase due to dissolution were enhanced in the lacustrine center.关键词
断陷湖盆/东营凹陷/红层/储层特征/主控因素Key words
rift lake basin/Dongying Depression/red beds/reservoir characteristics/main controlling factors分类
能源科技引用本文复制引用
董大伟,李继岩,王晓蕾,商琳,刘建..渤海湾盆地东营凹陷东部孔店组红层储层特征及控制因素[J].中国石油大学学报（自然科学版）,2017,41(5):20-29,10.基金项目
国家油气科技重大专项( 2016ZX05006-003 ) （ 2016ZX05006-003 ）
山东省高等学校科技计划项目( J16LH52 ) （ J16LH52 ）
东营市科技发展计划项目(2017zcyd69) （2017zcyd69）
中国石油大学胜利学院科技计划项目(KY2015006) （KY2015006）
