Well drilling wall protection device and method based on rocking vibration pressure rotary spraying

Abstract

The invention discloses a well drilling wall protection device and method based on rocking vibration pressure rotary spraying. The device comprises a chassis, a flexible suspender winding drum and a drilling tower are arranged on the chassis, a flexible suspender is wound around the flexible suspender winding drum, the free end of the flexible suspender is connected to a suspension tool body through a head sheave arranged at the top of the drilling tower, the lower portion of the suspension tool body is connected with a rocking vibrator, the lower portion of the rocking vibrator is connected with a high-pressure rotary spraying device, the lower portion of the high-pressure rotary spraying device is connected with a drill bit, a winch is further arranged on the chassis, a traction rope iswound around the winch, and the free end of the traction rope is connected to the suspension tool body through the head sheave. According to the well drilling wall protection device and method based on rocking vibration pressure rotary spraying, the stratum wall protection effect is effectively improved, the usage amount of well drilling mud is reduced, or, a lubricating fluid is directly used, sothat pollution is greatly reduced, meanwhile, the time-consuming and material-consuming procedures of casing pipe wall protection are omitted, the well drilling speed is greatly increased, and the well drilling cost is reduced.

Description

technical field [0001] The invention relates to the fields of oil drilling, engineering drilling and geological drilling, in particular to a drilling wall protection device and method based on swing vibration pressure jet jetting. Background technique [0002] The wall protection problem of oil, geology, and engineering drilling in complex formations has always been the focus of engineering and technical personnel's research. In the drilling of exploration, drilling and piling, the stability of the well wall directly affects the progress, cost and economy of the drilling project. benefit. At present, there are mainly three wall protection methods for drilling: mud wall protection method, casing method and cement injection method. In the diameter hole section, the effect of retaining walls is significantly reduced. The construction process of casing method and cement injection method is complicated, time-consuming and costly, and is restricted by drilling diameter and other ...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a drilling wall protection device and method based on rocking vibration pressure jet spraying to overcome the defects of the prior art. Formation wall protection effect, reducing the amount of drilling mud used or directly using lubricating fluid greatly reduces pollution, while eliminating the time-consuming and material-consuming process of casing wall protection, greatly increasing drilling speed and reducing drilling costs

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