靖边油田天赐湾区块长6^(1)致密储层非均质性特征及其控制因素研究  

Study on Heterogeneity Characteristics and Controlling Factors of Chang 6^(1) Tight Reservoir in Tianciwan Block of Jingbian Oilfield

作　　者：吴彤 吴雨风 WU Tong;WU Yufeng(School of Earth Science and Resources,Chang'an University,Xi'an 710054,China)

机构地区：[1]长安大学地球科学与资源学院,陕西西安710054

出　　处：《河南科技》2025年第3期98-101,共4页Henan Science and Technology

摘　　要：【目的】靖边油田天赐湾区块进入高含水后期开发阶段,储层剩余油分布认识不明,而储层非均质性对于油藏的富集具有控制作用,因此,为合理高效开发研究区油气资源及剩余油挖潜,研究储层非均质性特征十分必要。【方法】采用气测物性,岩心薄片鉴定及测井数据等,对靖边油田天赐湾区块长6^(1)储层的宏观、微观和平面非均质性特征进行分析。【结果】靖边油田天赐湾区块长6^(1)段储层多发育长石砂岩,少量为岩屑长石砂岩,具有强层内非均质性,弱层间非均质性,弱平面非均质性。【结论】靖边油田天赐湾区块为三角洲平原亚相,其延长组长6^(1)段储层非均质性主要受沉积作用及成岩作用控制,区内主要发育压实压溶作用、胶结作用及溶蚀作用。[Purposes]The Tianciwan block of Jingbian Oilfield has entered the late development stage of high water cut.The distribution of remaining oil in the reservoir is unknown,and the reservoir heterogeneity has a controlling effect on the enrichment of the reservoir.Therefore,in order to rationally and efficiently develop the oil and gas resources and remaining oil in the study area,it is extremely important to study the characteristics of reservoir heterogeneity.[Methods]In this paper,the macroscopic,microscopic and plane heterogeneity characteristics of Chang 6^(1)reservoir in Tianciwan block of Jingbian oilfield were studied and analyzed by gas logging physical properties,core thin section identification and logging data.[Findings]The study shows that the Chang 6^(1)reservoir in Tianciwan block of Jingbian oilfield mostly developed feldspar sandstone,and a small amount of that is lithic feldspar sandstone,which has strong intraformational heterogeneity,weak interformational heterogeneity and weak plane heterogeneity.[Conclusions]The research results show that the Tianciwan block of Jingbian Oilfield is a delta plain subfacies,and the reservoir heterogeneity of Chang 6^(1)member of Yanchang Formation is mainly controlled by sedimentation and diagenesis.The diagenesis in the area mainly develops compaction,pressolution,cementation and dissolution.

关 键 词：天赐湾区块 长6^(1)储层 非均质性 储层特征 

分 类 号：P618.13[天文地球—矿床学]