摘要
为了提高钻井过程中井底钻井液能量及其利用效率，设计了吸振式井下液压脉冲发生装置，建立了装置的仿真模型并进行了仿真分析，对装置的性能进行了现场测试。基于将钻柱振动能量转化为井底钻井液液压的思路，设计了吸振式井下液压脉冲发生装置的结构并分析了其工作原理，在此基础上建立了装置的仿真模型。仿真分析结果表明：该装置可调制出较高幅值的井底脉冲压力，产生高出常规钻进喷嘴压降2～6MPa的射流压力，且通过优选钻井液排量和钻头喷嘴当量直径可提高脉冲压力幅值。现场试验结果表明：与常规钻进相比，该装置可大幅提高钻进速度，有效延长钻头使用寿命；装置性能稳定、使用寿命长，可满足现场钻井施工要求。
To improve the down-hole drilling fluid energy and its utilization efficiency, a drilling string absorption and hydraulic pulsed jet generator was designed, its simulation model was established and simulation analysis was conducted, and its performance was tested in field application. Based on the idea of translating the energy of the drill string vibration into high pressure hydraulic pulsating jet energy, the structure of the device was designed and its working principle was analyzed, and then its simulation model was established. The simulation analysis results demonstrate that the device can produce the jet pressure 2 to 6 MPa higher than the nozzle pressure drop in conventional drilling. Field test results show that the device can improve the drilling speed significantly and extend the service life of the bit effectively; the device itself has steady performance and long service life, and can satisfy the drilling requirements.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
2014年第5期618-622,共5页
Petroleum Exploration and Development
基金
国家科技重大专项"西部山前复杂地层安全快速钻井技术"(2011ZX05021-001)
国家重点基础研究发展计划(973)项目"深井复杂地层钻井设计平台与风险控制机制"(2010CB226706)
关键词
钻井
钻柱振动
井底液压
脉冲射流
仿真分析
机械钻速
drilling
drilling string vibration
down-hole fluid pressure
pulsating jet
simulation analysis
penetration rate
