摘要
为解决高压注气过程中注气封隔器密封不严导致的油套环空带压问题,通过优化封隔器结构、优选密封机构与材料,研制了一种新型的插入式高温高压注气封隔器。该封隔器设计整体式密封插管,减少连接部位,降低漏失风险;设计密封圈与插管本体一体硫化,避免管柱蠕动对密封圈的损伤,提高插管密封效果和寿命;选用气密封胶筒,设计分瓣张开式刚性支撑保护,避免胶筒受损,提高注气密封性能。该封隔器的优化设计延长了封隔器使用寿命,降低了油套环空带压风险,解决了高压注气安全隐患,为冀东油田气驱发展提供技术支撑。
In order to solve the troublesome tubing and casing annulus pressure caused by sealing failure of the gas injection packer during high-pressure gas injection,a new insert-type high-temperature high-pressure gas injection packer was developed by optimizing the packer structure and sealing mechanism and elements.The integral insert sealing tubing is designed to reduce the connection parts and therefore,leakage risks.The sealing rings are integrated into the insert tubing body via the in-situ vulcanization to avoid damage to sealing rings due to string creep and improve the sealing effect and service life of the insert tubing.The gas-sealing rubber cylinder is adopted and equipped with split-open rigid support protectionto avoid damage to the rubber cylinder,improve the gas injection sealing performance and prolong the service life of the packer.The invented packer reduces the risks of casing annulus pressure,solves the potential safety hazards in high-pressure gas injection,and provides technical support for gas flooding in Jidong Oilfield.
作者
黄晓蒙
肖国华
王磊
王远征
田晶蒙
王瑶
HUANG Xiaomeng;XIAO Guohua;WANG Lei;WANG Yuanzheng;TIAN Jingmeng;WANG Yao(Research Institute of Drilling&Production Technology,PetroChina Jidong Oilfield Company,Tangshan 063004,Hebei,China)
出处
《新疆石油天然气》
CAS
2023年第3期21-25,共5页
Xinjiang Oil & Gas
基金
中国石油冀东油田开发重大科技工程“提高采收率专项工程研究”(KF2018A03)。
关键词
插入式
高压注气
封隔器
胶筒
密封性能
环空带压
insert-type
high-pressure gas injection
packer
rubber cylinder
sealing performance
annulus pressure
