Deep-section and small-caliber underground rock slag salvaging tool

Abstract

The invention discloses a deep-section and small-caliber underground rock slag salvaging tool, belongs to the technical field of well drilling equipment, and solves the technical problems of low single slag salvaging quantity, low slag salvaging efficiency and incapability of salvaging coarse rock slag in a traditional deep-section and small-caliber underground rock slag salvaging tool. The deep-section and small-caliber underground rock slag salvaging tool is characterized in that a thrust bearing is mounted on a water separation joint; a support fixed spring piece is mounted on the thrust bearing through support fixed spring piece joints; a rock slag accommodating pipe is fixedly mounted on the lower end surface of a support fixed spring piece lower joint; the upper end of a driving shaft penetrates through the support fixed spring piece lower joint, the thrust bearing and a support fixed spring piece upper joint in sequence, and extends into the water separation joint; the lower endof the driving shaft penetrates through the support fixed spring piece lower joint, and extends into the rock slag accommodating pipe; the lower end of the driving shaft is fixedly connected with theupper end of a driven shaft; and the other end of the driven shaft is fixedly connected with a screw rod of a spiral wing drill bit through a coupling. The deep-section and small-caliber undergroundrock slag salvaging tool is high in single slag salvaging quantity, high in slag salvaging efficiency and simple in operation, and relatively reduces the downward drilling times.

Description

technical field [0001] The invention belongs to the technical field of drilling equipment, and in particular relates to a small-diameter downhole rock slag cleaning tool in a deep well section. Background technique [0002] During the full-scale drilling of small-caliber deep hole sections with complete leakage, the carved slag cannot be effectively brought out of the ground by the circulating flushing fluid, and sinks to the bottom of the well after stopping the pump, which is likely to cause buried drilling accidents, and then bring to huge economic losses. In order to ensure the safety of drilling and prevent accidents in the well, it must be cleaned in time to ensure that the bottom of the hole is clean. [0003] However, traditional rock slag cleaning tools have the following disadvantages: [0004] 1. The shape of the rock slag holding space: the "concentric annular space" formed by the central drill pipe and the outer slag pipe. Its disadvantages are: the diameter ...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the deficiencies in the prior art and solve the technical problems of small slag removal tools in the deep well section, the single slag removal rate is low, the slag removal efficiency is low, and the coarse slag cannot be completely removed. Water flushing deep well section small diameter downhole rock slag cleaning tool

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