CN220151289U

CN220151289U - Non-rotating centralizer

Info

Publication number: CN220151289U
Application number: CN202320766429.6U
Authority: CN
Inventors: 金业鑫; 柳杨
Original assignee: Mudanjiang Xinruide Petroleum Equipment Co ltd
Current assignee: Mudanjiang Xinruide Petroleum Equipment Co ltd
Priority date: 2023-04-10
Filing date: 2023-04-10
Publication date: 2023-12-08
Anticipated expiration: 2033-04-10

Abstract

The utility model relates to the field of drilling tools, in particular to a non-rotary centralizer, which has the functions of: controlling the track of the well, reaming the well, and setting the well wall; the action of the non-rotating centralizer; reducing drilling vibration, reducing friction loss and prolonging service life; the two centralizers have advantages and disadvantages, but the underground environment is complex, the centralizers are replaced according to the environment to waste time, and the utility model solves the problems and comprises the following steps: the drill rod is rotationally connected with a centralizing body outside the drill rod, a spiral centralizing edge is connected outside the centralizing body, a ring groove is formed in the centralizing body, a ratchet is connected to the inner wall of the ring groove, a shifting tooth is rotationally connected to the outer surface of the drill rod in the ring groove, the shifting tooth is connected with the outer surface of the drill rod through an elastic piece, the elastic piece is in a compressed state, and the functions of switching the rotary centralizer and the non-rotary centralizer are realized by switching the positive and the negative rotation of the rotating rod, so that the situation that the drilling efficiency is influenced by the replacement of the centralizer is avoided.

Description

Non-rotating centralizer

Technical Field

The utility model relates to the field of drilling tools, in particular to a non-rotating centralizer.

Background

Function of the rotating centralizer: controlling the track of the well, reaming the well, and setting the well wall;

the action of the non-rotating centralizer; reducing drilling vibration, reducing friction loss and prolonging service life;

the two centralizers have advantages and disadvantages, but the underground environment is complex, and the centralizers are replaced according to the environment to waste time.

Disclosure of Invention

The utility model aims to solve the technical problems that two centralizers have advantages and disadvantages, but the underground environment is complex, and the centralizers are replaced according to the environment to waste time, and further provides a non-rotating centralizer.

A non-rotating centralizer, comprising: the drill rod is rotationally connected with a centralizing body outside the drill rod, a spiral centralizing edge is connected outside the centralizing body, an annular groove is formed in the centralizing body, a ratchet is connected to the inner wall of the annular groove, a poking tooth is rotationally connected to the outer surface of the drill rod in the annular groove, the poking tooth is connected with the outer surface of the drill rod through an elastic piece, and the elastic piece is in a compressed state.

Further, the outer surface of the drill rod is provided with a bearing groove, the bearing is embedded in the bearing groove, and the bearing is connected with the inner wall of the centralizing body.

The utility model has the beneficial effects that:

through switching the bull stick forward and backward rotation, realize switching the function of rotatory centralizer and non-rotatory centralizer, avoid influencing the condition of drilling efficiency because of changing the centralizer.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of a longitudinal structure of the present utility model;

FIG. 3 is a second schematic diagram of the structure of the present utility model;

fig. 4 is a schematic cross-sectional view of a transverse structure of the present utility model.

In the figure: a drill rod 1; a righting body 2; spiral righting edges 3; a ring groove 4; a ratchet 5; a poking tooth 6; a spring 7; a bearing groove 8; and a bearing 9.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The rotating connection in the device means that the bearing is baked on the shaft, a spring retainer ring groove is arranged on the shaft or the shaft hole, and the axial fixation of the bearing is realized by clamping the spring retainer ring in the retainer ring groove, so that the rotation is realized; the hinge is a movable connection mode on the connecting parts such as the hinge, the pin shaft, the short shaft and the like.

The present utility model will be described in detail below with reference to the accompanying drawings.

Embodiment one:

a non-rotating centralizer according to this embodiment is described below with reference to fig. 1-4, comprising: the drill rod 1 is rotationally connected with a centralizing body 2 outside the drill rod 1, a spiral centralizing edge 3 is connected outside the centralizing body 2, an annular groove 4 is formed in the centralizing body 2, a ratchet 5 is connected to the inner wall of the annular groove 4, a poking tooth 6 is rotationally connected to the outer surface of the drill rod 1 in the annular groove 4, the poking tooth 6 is connected with the outer surface of the drill rod 1 through an elastic sheet 7, and the elastic sheet 7 is in a compressed state;

when the drill rod 1 rotates positively, the drill rod 1 drives the poking teeth 6 to rotate, the poking teeth 6 are contacted with the inclined planes of the ratchets 5, the poking teeth 6 rotate downwards around the rotating shafts, the poking teeth are reset upwards under the reset action of the elastic sheets 7 after avoiding the ratchets 5, at the moment, the drill rod 1 rotates and can not drive the righting body 2 to rotate, the righting body 2 plays a role in reducing drilling vibration, when the righting body 2 and the righting edges 3 are clamped by the concave-convex parts of the well wall, the drill rod 1 rotates reversely, the poking teeth 6 are contacted with the vertical surfaces of the ratchets 5, the poking teeth 6 drive the ratchets 5 to rotate, the ratchets 5 drive the righting body 2 and the spiral righting edges 3 to rotate, and the righting body 2 and the spiral righting edges 3 play a role in controlling the track of the well hole, reaming and the well wall.

The outer surface of the drill rod 1 is provided with a bearing groove 8, a bearing 9 is embedded in the bearing groove 8, and the bearing 9 is connected with the inner wall of the righting body 2;

the bearing 9 can effectively prevent the righting body 2 from being blocked with the drill rod 1, and prolong the service life.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A non-rotating centralizer, comprising: the drill rod (1), the outer rotation of the drill rod (1) is connected with a centralizing body (2), the outer of the centralizing body (2) is connected with a spiral centralizing edge (3),

the method is characterized in that: the inside annular groove (4) that is equipped with of body (2) is right, and annular groove (4) inner wall is connected with ratchet (5), and drilling rod (1) surface rotation in annular groove (4) is connected with dials tooth (6), dials tooth (6) and drilling rod (1) surface and passes through shell fragment (7) and link to each other, and shell fragment (7) are in compression state.

2. A non-rotating centralizer according to claim 1, wherein: the outer surface of the drill rod (1) is provided with a bearing groove (8), a bearing (9) is embedded in the bearing groove (8), and the bearing (9) is connected with the inner wall of the centralizing body (2).