Strong-power composite impactor suitable for deep hard stratum

Abstract

The invention provides a strong-power composite impactor suitable for a deep hard stratum. The strong-power composite impactor comprises a motor sleeve, a circumferential hammer seat and a sealing casing pipe, a step extending inwards is arranged at the top of the inner side of the motor sleeve, a motor stator is arranged at the lower part of the step, the outer side of the motor stator is fixedlyconnected with the motor sleeve, and a motor rotor is arranged in the motor stator; an upper pressing disc is connected to the lower portion of the motor rotor, a lower pressing disc used in cooperation with the upper pressing disc is arranged below the upper pressing disc, a vibration shaft is connected to the lower portion of the lower pressing disc, and a spring is arranged on a downward stepat the outer side of the vibration shaft; and a contact surface structure between the upper pressing disc and the lower pressing disc is arranged in a staggered manner, and when the upper pressing disc and the lower pressing disc rotate relatively, the lower pressing disc moves downwards under the action of the upper pressing disc and rebounds under the action of the spring, so that impact of up-and-down movement is achieved. Axial and circumferential load percussion drilling can be achieved, stable connection and movement of the impactor are guaranteed in the process, the impactor is not prone to damage, and the service life can be prolonged.

Description

technical field [0001] The invention relates to the technical field of oil and gas field development, in particular to an impactor, in particular to a strong dynamic composite impactor suitable for deep hard formations. Background technique [0002] With the exploration, development and massive utilization of oil and gas resources in various countries, most of the oil resources that are easy to exploit have been developed, and most of the newly developed oil fields are located in difficult formations that were difficult to develop before. Among them, more and more deep wells and ultra-deep wells are encountered during drilling, and more and more situations are encountered in formations with high rock hardness, high rock drillability and high rock abrasiveness, which seriously affect the drilling speed of deep hard formations and exploration and development costs. In particular, most of my country's oil resources are located in deep hard formations that are difficult to deve...

AI Technical Summary

Problems solved by technology

In order to improve the rock-breaking efficiency, generally, axial and circumferential double-dimensional rock breaking is carried out on the formation to improve the underground working efficiency. The impactor rotates in the opposite direction, but its structure depends on the obliquely engaged hammer head and hammer seat. The contact surface is only one side, and the limit structure is simple. After use and wear, it will cause positioning errors and affect the circumferential impact effect.

Images