Cementing device capable of multi-directional vibration

Abstract

The invention discloses a well fixing device capable of being multi-directionally vibrated. The well fixing device capable of being multi-directionally vibrated comprises a cylindrical body (1); the upper section of the body (12) is provided with at least one worm wheel section (2); the worm wheel section (2) is formed by a flow guide disc (21), a mandrel (22), a worm wheel blade (23) and an eccentric block (24); the lower section of the body (1) is internally provided with a plum-blossom-shaped rotor (3) and a plum-blossom-shaped stator (4); and a compression spring (5) is arranged between the lower end of the plum-blossom-shaped rotor (3) and the body (1). The well fixing device is beneficial for improving the well fixing quality and mainly has the effects from the following aspects that (1) underground cement slurry can be cut so as to reduce the static cutting force of the cement slurry; (2) the multidirectional vibration of the device and the cutting movement of an eccentric worm wheel sheet are beneficial for eliminating air bubbles in the cement slurry; (3) the multidirectional vibration generated by a tool can be used for improving the replacing efficiency; and (4) prepad fluid and washing solution are particularly suitable for effectively washing a well hole.

Description

technical field [0001] The invention belongs to the technical field of drilling in oil and gas fields, and specifically refers to a tool for running casing smoothly and improving cementing quality in casing running and cementing operations in oil field drilling. Background technique [0002] In current drilling operations, when a well segment is finished, it is necessary to perform casing operation and cementing. However, in the case of some irregular wellbore, it often occurs that the casing is not in place; in the cementing operation of directional wells, the problem of poor cementing quality often occurs, which leads to channeling, channeling, etc. Issues such as pressure in the annular space seriously affect the safety and timeliness of on-site operations. [0003] In order to improve the cementing quality, some technicians have proposed corresponding vibration cementing devices. However, according to the field use of CNOOC Zhanjiang Branch, the previous vibration ceme...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to avoid the deficiencies in the prior art and provide a cementing device that can vibrate in multiple directions to solve the problems of poor cementing quality in wells with irregular diameters and difficulty in running casings smoothly.

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