A device for increasing the drilling speed of oil and gas wells

Abstract

The invention belongs to the field of petroleum engineering and particularly relates to a device for improving the oil and gas well drilling speed. The device for improving the oil and gas well drilling speed comprises a mandrel body, a spline outer barrel, a spring protection barrel, a spring assembly, a spring lower plugging connector, a piston assembly and a pressurization assembly outer barrel, and is characterized in that the mandrel body is connected with the piston assembly in a threaded mode, the spline outer barrel, the spring protection barrel, the spring lower plugging connector and the pressurization assembly outer barrel are connected together through threads, and the spring assembly is arranged in the spring protection barrel. Energy for working of the device is provided by vibration of a drill stem and is increased along with the increase of the depth of a well, and the adverse effect of vibration is reduced by the working process of the device; by adopting the device, both the rock breaking efficiency and the well bottom cutting carrying effect are improved; the device is simple in structure and stable in performance, and other risks will not be caused by drilling operation when the device is used; the structure of the drill stem does not need changing, normal use of the device will not be affected by the types of drills, and therefore the device is wide in application range and convenient to popularize and use.

Description

technical field [0001] The invention belongs to the field of petroleum engineering, and in particular relates to an underground rock-breaking drilling device in oil and natural gas drilling operations, in particular to a device for increasing the drilling speed of oil and gas wells. Background technique [0002] The problem of slow drilling speed in deep wells or hard formations has always restricted the further development of oil and gas resources. Petroleum workers have developed a variety of downhole tools or devices to improve drilling efficiency, including downhole power drilling tools, downhole rotary percussion drilling tools, downhole Torsional percussion drilling tools, downhole fluid jet generators, downhole pulse jet launchers, etc. Field application results show that these tools can improve drilling speed under certain conditions. However, the analysis found that although the mechanisms for these tools to increase speed are different, these tools have a common f...

AI Technical Summary

Problems solved by technology

It is conceivable that in this kind of well, the working status of the above-mentioned tools or devices will be greatly affected, and it is very likely that they will not work or even affect the drilling operation.

In addition, due to the different underground rock formations, there are differences in the methods used to increase the drilling speed, and it is difficult for the same speed-increasing mechanism to be applied to various formations.

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