摘要
对石油钻井钻头新型喷嘴的研究,包括振荡原理、物理和数学模型以及室内和现场试验结果进行了讨论。试验结果表明,钻头上安装了喷嘴,在井底能产生强热的压力振荡,使井底液动力压力梯度、墙壁压力势增大,有利于破碎岩石和清除井底岩屑。而且在相同条件下可以提高机械钻速35.5～77%、钻头进尺6～44%。
A new drill bit nozzle is presented in this paper with respect to the pri- nciple of oscillation, physical and mathematical models and the results of in -house and field tests.Addition of such a nozzle can generate strong pressure oscillation to enhance bottom hole hydrodynamic force, pressure gradient and well bore pressure potential ,resulting in rock fracturing and bottom clean-up. Under the same operating conditions, the penetration rate can be increased by 35.5-77%, the bit footage by 6-44%.
出处
《石油学报》
EI
CAS
CSCD
北大核心
1993年第1期124-130,共7页
Acta Petrolei Sinica
