姬塬油田G83区长4+5储层欠注机理分析  

Under-injection mechanism analysis of Chang 4+5 reservoir in G83 district of Jiyuan oilfield

作　　者：王小宁 李昊玺 严昌鹏 薛鸿博 李轩 韩涛 WANG Xiaoning;LI Haoxi;YAN Changpeng;XUE Hongbo;LI Xuan;HAN Tao(Oil Production Plant 9 of PetroChina Changqing Oilfield Company,Yinchuan Ningxia 750006,China;Gas Production Plant 1 of PetroChina Changqing Oilfield Company,Xi'an Shaanxi 710018,China)

机构地区：[1]中国石油长庆油田分公司第九采油厂,宁夏银川750006 [2]中国石油长庆油田分公司第一采气厂,陕西西安710018

出　　处：《石油化工应用》2023年第3期90-94,共5页Petrochemical Industry Application

摘　　要：姬塬油田G83区长4+5油藏欠注井逐年增多,且大多数欠注井多次治理无效,急需深入认识油藏储层的微观结构变化特征,研究注水井欠注机理,从而解决注水井欠注、注水压力高、欠注治理无效的问题。为此开展了储层特征研究、水驱实验、配伍性实验、注入水水质分析等。研究表明:注水不配伍、微粒运移、注入水水质不达标导致地层堵塞是欠注主要原因。The number of under-injection wells in Chang 4+5 reservoir in G83 district of Jiyuan oilfield is increasing year by year,and most of the under-injection wells have been treated ineffectively for many times.It is urgent to deeply understand the microstructure change characteristics of the reservoir and study the mechanism of under-injection of water injection wells,so as to solve the problems of under-injection of water injection wells,high water injection pressure and ineffective under-injection treatment.For this reason,reservoir characteristics research,water drive experiment,compatibility experiment and injection water quality analysis have been carried out.The study shows that the main reasons for under-injection are incompatibility of water injection,migration of particles and formation plugging caused by substandard injected water quality.

关 键 词：姬塬油田 长4+5油藏 欠注 微观结构 变化特征 

分 类 号：TE357.8[石油与天然气工程—油气田开发工程]