下寺湾油田油气富集主控因素分析  

Analysis of main controlling factors of oil and gas enrichment in Xisiwan Oilfield

作　　者：曹延平 魏宇航 Cao Yanping;Wei Yuhang(Research Institute of Exploration and Development,Xiasiwan Oil Production Plant,Yanchang Oilfield Co,LTD,Yan’an 716000;Shaanxi Heisenberg Inspection and Testing Technology Co,LTD,Yan’an 716000)

机构地区：[1]延长油田股份有限公司下寺湾采油厂勘探开发研究所,陕西延安716000 [2]延安大学石油工程与环境工程学院,陕西延安716000

出　　处：《石化技术》2025年第2期304-306,共3页Petrochemical Industry Technology

基　　金：延安大学研究生教育创新计划项目(YCX2023003)。

摘　　要：为明确致密油藏的油气富集的主控因素,以下寺湾油田下组合储层为例,通过综合物性资料,在研究区下组合储层特征、烃源岩特征、油藏类型及分布特征研究的基础上,对研究区油气富集主控因素进行分析研究。研究表明:丰富的烃源岩为油藏的形成提供了大量的物质基础,优相优储为油藏的形成提供了较好的储集场所,致密储层中广泛发育的小孔隙是石油成藏的主要空间,良好源储配置、持续充注与近源聚集控制着致密油藏的富集程度,微裂缝是油气富集高产的重要条件,几者的有效组合是形成研究区页岩油藏和致密油藏的主控因素。In order to identify the main controlling factors of oil and gas enrichment in tight reservoirs,this paper takes the lower combination reservoir in Xisiwan Oilfield as an example,and analyzes the main controlling factors of oil and gas enrichment in the study area based on the characteristics of the lower combination reservoir,the characteristics of the source rock,the type of reservoir and the distribution characteristics by synthesising physical property data.The research shows that:Abundant source rocks provide a large amount of material basis for the formation of oil reservoirs,and superior reservoir provides a good reservoir site for the formation of oil reservoirs.Small pores widely developed in tight reservoirs are the main space for oil accumulation.Good source and reservoir configuration,continuous charging and near-source accumulation control the enrichment degree of tight oil reservoirs.The effective combination of microfractures is an important condition for oil and gas enrichment and high production,and is the main factor for forming shale and tight oil reservoirs in the study area.

关 键 词：烃源岩 储层 主控因素 

分 类 号：P618.13[天文地球—矿床学]