摘要
【目的】物性特征会极大影响致密储集砂岩的油气分布与产能。为保障鄂尔多斯盆地砖窑湾地区长61致密储集砂岩的油气增产稳产,厘清其物性特征的控制因素具有重要意义。【方法】采用薄片及扫描电镜分析、孔隙度和渗透率等气测物性数据,以及高压压汞等,分析研究区长61致密储集砂岩的岩石学特征、孔隙类型和物性等储层特征,并探讨致密储集砂岩物性的主控因素。【结果】结果表明:砖窑湾地区长61致密储集砂岩多发育细粒高长石含量砂岩,孔隙-薄膜胶结及线接触发育,多见残余粒间孔和长石溶孔。【结论】沉积相与成岩相控制了致密储集砂岩物性的分布,水下分流叠置河道块状砂体和绿泥石膜胶结-粒间孔相长石砂岩具有高物性特征,是油气聚集的优势部位。
[Purposes]Physical characteristics will greatly affect the oil and gas distribution and production capacity of tight storage sandstone.In order to ensure the increase and stable oil and gas production of Chang 61 tight storage sandstone in Zhuanyaowan area of Ordos Basin,it is of great significance to clarify the control factors of its material characteristics.[Methods]This paper uses microscopic analysis,porosity,permeability and high pressure mercury to analyze and study the petrographic characteristics,pore types,pore structure characteristics and physical reservoir characteristics of Chang 61 tight storage sandstone,and discusses the main controlling factors of tight reservoir sandstone physical characteristics.[Findings]The results show that the Chang 61 tight storage sandstone in study area developed more fine-granular high feldspar content sandstone,pore-film cementation and line contact development,more residual intergranular pores and feldspar pores.[Conclusions]The sedimentary facies and diagenesis facies affect the distribution of physical properties of tight storage sandstone.The underwater diversion channel block sand and chlorite film cementation-intergranular pordspar sandstone have high physical characteristics,and are the dominant parts of oil and gas accumulation.
作者
朱荣彬
张亚增
娄兰
张锐
王红英
王安书
吴雨风
ZHU Rongbin;ZHANG Yazeng;LOU Lan;ZHANG Rui;WANG Hongying;WANG Anshu;WU Yufeng(Henan Province No.5 Geological Brigade Co.,Ltd.,Zhengzhou 450000,China;Henan Province Natural Resources Science and Technology Innovation Center(Research on the high value evaluation and utilization of new mineral materials),Zhengzhou 450000,China;School of Earth Science and Resources,Chang'an University,Xi'an 710054,China)
出处
《河南科技》
2024年第5期96-99,共4页
Henan Science and Technology
基金
2018年长庆油田分公司第一采油厂科技攻关项目“安塞油田砖窑湾地区长61层产建有利区优选”。
关键词
砖窑湾地区
致密砂岩
非常规储层
储层特征
物性特征
Zhuanyaowan area
tight sandstone
unconventional reservoir
reservoir characteristics
physical characteristics
