海上油田脉冲水力冲击解堵工具设计  

Design of Offshore Oilfield Pressure Pulse Plug Removal Tool

作　　者：张磊 孙林 李旭光 张凤辉 ZHANG Lei;SUN Lin;LI Xuguang;ZHANG Fenghui(CNOOC EnerTech Drilling&Production Co.,Tianjin 300450,China)

机构地区：[1]中海油能源发展股份有限公司工程技术分公司,天津300450

出　　处：《石油矿场机械》2021年第3期23-27,共5页Oil Field Equipment

基　　金：国家科技重大专项子课题“海上高效注采系统关键技术研究”(2016ZX05025-002-005);中海油能源发展股份有限公司科技项目“海上油田脉冲水力冲击压裂酸化联作技术研究与应用”(HFKJ-GJ201904)。

摘　　要：研究了海上油田脉冲水力冲击解堵工具的结构和工作原理。计算了该工具产生的最大压力,分析了冲击室的抗挤毁能力及冲击片的结构和爆破压力的影响因素。结果表明,冲击室挤毁主要受弹性屈曲控制,冲击片的材料和厚度选择直接影响冲击片的爆破压力,计算得到30 MPa破裂压力的冲击片厚度为1.0 mm。设计的冲击室和冲击片满足水力冲击工艺要求。在1500 m深的试验井中进行试验,水力冲击工具产生的瞬时最高压力可以达到地层破裂压力的1.2倍,具有良好的冲击解堵效果。The structure and principle of offshore oilfield pressure pulse plug removal tool were introduced.The maximum hydraulic pressure produced by the tool and the collapse pressure of the impact chamber,as well as the influence factors of the plate were calculated.The results show that the collapse of the impact chamber is mainly controlled by elastic buckling,and the choice of the material and thickness of the impact disc directly affects the burst pressure of the impact disc.The thickness of the impact disc with a rupture pressure of 30 MPa was calculated to be 1.0 mm.The impact chamber and plate designed meet the requirements of hydraulic impact technology.The tool was applied in a 1500 m deep oil well to conduct test.The results show that the instantaneous maximum pressure generated by the hydraulic impact tool can reach 1.2 times the formation fracture pressure,which has a good impact plugging removal effect.

关 键 词：海上油气田 水力冲击 脉冲解堵 工具 

分 类 号：TE935[石油与天然气工程—石油机械设备]