摘要
华北油田复杂断块砂岩油藏目前注水压力升高、注水量下降,影响了油田整体开发水平。为了提高注水效果,在注水井降压增注酸化措施方面进行了研究,从油藏地质原因、注水井伤害因素、土酸酸化与多氢酸酸化特性、多氢酸酸化设计及工艺优化方面进行了系统分析,提出适应华北油田储层的多氢酸酸化技术。现场应用结果表明:多氢酸深部酸化技术降压效果显著,增注时间持久,具有较大的推广应用价值。
On comprehensive consideration of the reservoir geological reasons,injection wells injury factors,earth acid andhydrogen-acid-based properties,the hydrogen-acid-based technology for Huabei Oilfield reservoir is proposed,as well the processis designed and optimized.The presented technology is applied other blocks,the filed application results shows this technology hasgreat influence on decrease the well pressure and increases the injection lasting time.This technology has great application prospect.
作者
马越
佟汉林
Ma Yue;Tong Hanlin(CNPC Huabei Oilfield Company Cooperative Development Department Renqiu,062552)
出处
《石化技术》
CAS
2017年第9期102-103,共2页
Petrochemical Industry Technology
关键词
多氢酸
复杂断块
缓速
降压增注
hydrogen-acid-based
complicated block
retard
pressure release and augmented injection
