陇东合水地区长6油藏成岩作用对孔喉结构的影响探析  

Influence of Diagenesis on Pore Throat Structure of Chang 6 Reservoir in Heshui,Gansu

作　　者：孙宁[1] 陈占军[1] 余岚[1] 刘雪芬[1] SUN Ning;CHEN Zhan-jun;YU Lan;LIU Xue-fen(College of Natural Resources,Longdong University,Qingyang 745000,Gansu)

机构地区：[1]陇东学院新能源学院,甘肃庆阳745000

出　　处：《陇东学院学报》2024年第2期68-75,共8页Journal of Longdong University

基　　金：陇东学院2021年度教育教学改革项目;2021年陇东学院青年科技创新基金项目(XYZK2104)。

摘　　要：在充分了解合水地区长6油藏储层主要勘探成果和勘探难点的基础上,本着对信息进行综合判断、解释和分析的原则,运用沉积岩石学、储层沉积学、实验储层沉积学等方法与原理,对合水地区长6油藏储层孔喉结构类型特征进行了研究。研究结果表明,研究区长6储层主要发育粒间孔、长石溶孔、岩屑溶孔三种孔隙类型;主要发育的喉道类型以片状、弯片状喉道类型为主;主要发育的孔隙组合类型为中孔微喉型和小孔微喉型。还进一步研究了该区长6油藏储层成岩作用对孔喉结构的影响,研究发现该区发育的成岩作用中溶解作用对储层岩石的储集性能起着建设性作用,而压实作用、压溶作用、胶结作用则起着破坏性作用。该研究对研究区孔喉微观结构的认识及油藏的高效开发均具有重要的指导意义。On the basis of understanding the exploration achievements and exploration difficulties of Chang 6 Reservoir in Heshui,this paper studies the pore throat structure characteristics of Chang 6 Reservoir in Heshui by using the principles of sedimentary petrology,reservoir sedimentology and experimental reservoir sedimentology,based on the principle of comprehensive judgment,interpretation and analysis of information.The results show that the Chang 6 Reservoir develops three pore types:intergranular pore,feldspar dissolved pore and rock debris dissolved pore.The main types of larynx are flaky and curved flaky.The main pore association types are mesoporous micro throat type and small pore micro throat type.Dissolution plays a constructive role in the diagenesis developed in this area,while compaction,pressure dissolution and cementation play a destructive role.This study has important guiding significance for the understanding of pore throat microstructure and the development of reservoirs.

关 键 词：陇东地区 合水区块 长6油藏 孔喉结构 成岩作用 

分 类 号：TE348[石油与天然气工程—油气田开发工程]