High frequency hydraulic power vibration tool

Abstract

The invention relates to a high frequency hydraulic power vibration tool. The high frequency hydraulic power vibration tool comprises a center shaft, an outer housing, a spring, a screw motor assembly, a valve seat, a conical valve, an upper cam, a lower cam, a rib plate and a connecting rod mechanism, wherein a mating spline is arranged between the center shaft and the outer housing to form an axial spline for sliding cooperation; the spring is mounted between the center shaft and the outer housing; the valve seat is fixed to the inner wall of the outer housing, and is located at the lower part of the center shaft; the rib plate is mounted between the conical valve and the outer housing, and is fixedly mounted on the outer housing; the conical valve can axially move along the rib plate; the upper cam is fixedly mounted in the conical valve; the lower cam is mounted below the upper cam and is limited axially; the lower cam and the upper cam form a cam transmission cooperation; and thelower cam is in transmission with a rotor of the screw motor assembly through the connecting rod mechanism. The high frequency hydraulic power vibration tool disclosed by the invention can completelymeet domestic drilling technology requirements of wells having complex constructions including straight wells, directional wells, lateral wells and the like, and is a novel tool simple in structure, convenient to operate, low in cost and safe and reliable.

Description

technical field [0001] The invention relates to a high-frequency hydraulic vibration tool in the tool fields of oil and gas drilling, coal bed gas drilling, geological exploration, mine drilling and the like. Background technique [0002] In the fields of oil and gas drilling, geological exploration, mine drilling, etc., as the depth of the well increases, the rock becomes harder and harder, which seriously restricts the rock-breaking efficiency of the drill bit. Drilling practice has proved that during the process of the drill bit rotating to break rock, applying a certain frequency of impact force on the drill bit can effectively improve the rock breaking efficiency of the drill bit. The principle of existing impact tools at home and abroad is mainly rigid impact, which belongs to low-frequency and high-amplitude impact, that is, the impact energy is large, but the frequency is low. The extension of the drilling efficiency decreases rapidly. The main reason is that the im...

AI Technical Summary

Problems solved by technology

Research and analysis of domestic and foreign data shows that the overall effect of the existing impact tools on site is not ideal, the internal parts of the impact tools are prone to fatigue damage, and the service life is low, and the existing impact tools are longer in size, which extends the blind area of ​​the downhole measurement and control instrument. Therefore, it cannot fully meet the drilling technology requirements of complex structural wells such as directional wells, horizontal wells, and extended-reach wells.

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