High-temperature resistant vibration tool for horizontal well

Abstract

The invention relates to a high-temperature resistant vibration tool for a horizontal well. The high-temperature resistant vibration tool for the horizontal well comprises a shell assembly and a vibration assembly arranged in the shell assembly and is characterized in that the shell assembly comprises an upper joint, an upper joint sleeve, a connection sleeve, a cover and a lower joint which sleeve from top to bottom in sequence; the vibration assembly comprises an upper end turbine, an eccentric shaft and a lower end turbine which are connected in sequence from top to bottom; the vibration assembly is arranged in the shell assembly by an upper end bearing and a lower end bearing; the upper end bearing and the lower end bearing respectively sleeve two end shafts of the eccentric shaft; an upper thrust ring and a lower thrust ring are respectively arranged at two ends of the vibration assembly and are respectively arranged in the upper joint sleeve and the lower joint; a channel for allowing fluid to flow is arranged in each of the shell assembly and the vibration assembly. The high-temperature resistant vibration tool for the horizontal well has the beneficial effects that the work reliability and high temperature resistance of the tool are improved, the deepening depth is increased, and enough drilling and pressing effects are applied.

Description

technical field [0001] The invention relates to the technical field of oil and gas extraction tools, in particular to a high-temperature-resistant vibration tool for horizontal wells. Background technique [0002] With the rapid development of shale gas, the number of horizontal wells is increasing day by day. Compared with traditional drill pipe operations, coiled tubing can perform operations such as drilling bridge plugs and workover without snubbing. However, limited by the coiled tubing itself, the coiled tubing is prone to self-locking in large horizontal wells, causing the coiled tubing to fail to reach the predetermined depth for related operations, or to fail to apply sufficient drilling pressure after reaching the designated position, resulting in failure of the coiled tubing operation. Unable to successfully complete related drilling operations. The published patent "Vibration Tool for Extended Reach Well" Patent No.: CN 202673216U, although the torque friction ...

AI Technical Summary

Problems solved by technology

However, limited by the coiled tubing itself, the coiled tubing is prone to self-locking in large horizontal wells, causing the coiled tubing to fail to reach the predetermined depth for related operations, or to fail to apply sufficient drilling pressure after reaching the designated position, resulting in failure of the coiled tubing operation. Unable to successfully complete relevant drilling operations

The published patent "Vibration Tool for Extended Reach Well" Patent No.: CN 202673216U, although the torque friction of the drill pipe has been reduced, which is beneficial to the construction of underground operations, but there are still the following deficiencies: First, the motor is used as the vibration power. Obstruction of the passage limits the displacement of the coiled tubing, making it impossible to carry out large-displacement operations; second, the motor structure contains rubber parts, which cannot be used for a long time in high-temperature wells and geothermal wells, and the service life is greatly affected; Because it uses the connection structure of cardan shaft, transmission shaft and accelerator, the connection structure is easy to wear and tear during high-frequency and high-temperature operations, which affects the service life

Images