摘要
为了提高水力喷砂射孔技术的射流压力,加快水力喷砂射孔技术对非常规油气层和深层地层油气的开采速度,结合井下增压技术与水力喷砂射孔技术,研制井下水力增压器。为确保增压器安全有效地工作,防止活塞因受阻而卡死,根据该装置的结构和工作原理建立了活塞腔正反行程的流体域模型,分析增压器在工作过程中的增压特性和增压器自身工作频率与固有频率之间的关系,并开展井下水力增压器地面功能性试验,试验结果证实了该装置的可行性。研究结果表明:在活塞运动单一行程中,活塞运动速度、流体出射速度以及活塞腔流体压力均随时间呈现出先增大后逐渐趋于稳定的规律;增压器工作频率与固有频率不重合,不会引起共振现象。该研究结果为后期井下水力增压器二代设计与优化提供了参考。
In order to improve the jet pressure of hydraulic sandblasting and perforating technology and accelerate the exploitation speed of hydraulic sandblasting and perforating technology for unconventional oil and gas reservoir and deep formation,a downhole hy⁃draulic supercharger was developed by combining the downhole pressurization technology and hydraulic sandblasting and perforating technology.In order to ensure the safe work of the supercharger and effective to prevent piston stuck phenomenon occurring due to blocked,the piston chamber fluid domain models in forward stroke and reverse stroke were established according to the structure and working principle of the device,the supercharger characteristics of the supercharger in the working process were analyzed,as well as the relationship between the working frequency and inherent frequency.A downhole hydraulic supercharger functional test was conduc⁃ted on the ground.The experimental results confirm the feasibility of the device.The results show that in a single stroke of piston mo⁃tion,the piston motion velocity,the fluid outflow velocity and the fluid pressure in the piston cavity all increase first and then gradual⁃ly stabilize with time;the working frequency of the supercharger does not coincide with the natural frequency,and will not cause reso⁃nance phenomenon.The research results provide reference for the design and optimization of the second generation of downhole hydrau⁃lic supercharger.
作者
黄壮
宋顺平
李小鹏
夏成宇
黄和祥
许炜
何宇航
HUANG Zhuang;SONG Shunping;LI Xiaopeng;XIA Chengyu;HUANG Hexiang;XU Wei;HE Yuhang(College of Mechanical Engineering,Yangtze University,Jingzhou Hubei 434023,China;Changqing Drilling Company,CNPC Chuanqing Drilling Engineering Company Limited,Xi’an Shaanxi 710016,China)
出处
《机床与液压》
北大核心
2022年第6期9-15,共7页
Machine Tool & Hydraulics
基金
国家自然科学基金项目(51405032)
湖北省重点研发计划
国家页岩油气富集机理与有效开发重点实验室基金(2020014)。
关键词
井下增压器
动网格
工作性能
Downhole supercharger
Dynamic mesh
Work performance
