Damping device for rotary guide drilling

Abstract

The utility model belongs to the technical field of rotary steerable drills, and discloses a vibration damper for rotary steerable drilling, which comprises an outer sleeve, an axial vibration damper is fixedly mounted in the outer sleeve, the axial vibration damper is formed by combining a metal framework and vibration damping rubber, the vibration damping rubber is contacted with the inner wall of the outer sleeve, and the inner wall of the outer sleeve is fixedly connected with the metal framework. An electronic element is fixedly mounted in the axial shock absorber; the utility model provides a vibration damping device for rotary guide drilling, when the directional sensor is influenced by axial vibration, the directional sensor transmits the amplitude to the vibration damping rubber in contact with the directional sensor, the vibration damping rubber is in contact with the directional sensor, and the directional sensor is fixedly arranged in the directional measuring section of the outer sleeve, and one side of the directional sensor is fixedly connected with one side of the vibration damping rubber. The vibration reduction rubber deforms to counteract the vibration amplitude, so that the vibration amplitude is prevented from being transmitted into the electronic element through the axial vibration damper, and meanwhile, when the outer wall of the outer sleeve is affected by the vibration amplitude, the vibration reduction rubber is used for reducing the vibration amplitude.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the rotary steerable drilling technical field, concretely is a kind of damping device for rotary steerable drilling. BACKGROUND

[0002] Rotary steerable drilling is a directional drilling technology used in oil and gas exploration and development. The traditional directional drilling method stops rotating during drilling and then uses a thrust tool to change the direction of the borehole. Rotary steerable drilling technology allows adjusting the drilling direction while the drill bit is rotating, which can improve drilling speed and accuracy, and reduce drilling time and cost. The connection mode of each probe tube and the centralizer in the geological parameter unit is rigid connection. The impact vibration of the downhole drill bit is directly transmitted to the directional sensor in the directional measuring short section. Under this vibration, the rotary steerable tool is easily damaged. To prevent the damage of the guide workpiece, a damping device is generally installed in the rotary steerable drill.

[0003] For example, a rotary steerable drilling tool electronic chamber damping device with publication number CN 220319473 U includes a skeleton arranged in the electronic chamber. The bottom of the skeleton is provided with a damper. The damper adopts a metal rubber damper. The metal rubber damper includes a center bolt. The upper end of the center bolt is connected with the center of the bottom of the skeleton. The lower end of the center bolt is sequentially connected with an upper damper support seat, a metal rubber part and a lower damper support seat from top to bottom. When the tool is drilling, vibration is generated and transmitted along the drill string to the electronic chamber of the rotary steerable drilling tool. The metal rubber damper at the bottom of the electronic chamber realizes the damping and energy dissipation effect through the extrusion and friction between the internal metal wires of the metal rubber, thereby protecting the normal work of the electronic elements and sensors in the electronic chamber. The drilling tool can drill according to the pre-planned trajectory, thereby realizing damping and improving drilling accuracy. The metal rubber damper has the advantages of high elasticity, light weight, large damping, high temperature resistance and aging resistance.

[0004] The damping device adopts the mode of arranging a metal rubber part on the outer wall of the center bolt to reduce the vibration effect on the electronic elements. However, the center bolt nut part still contacts the lower damper support seat, and the vibration amplitude can still be transmitted to the center bolt through the lower damper support seat, thereby causing the damping effect to be reduced. To solve the above problem, a damping device for rotary steerable drilling is proposed. UTILITY MODEL CONTENTS

[0005] The utility model aims to solve the above problems and provides a damping device for rotary steerable drilling, which includes:

[0006] The outer sleeve is internally fixedly installed with an axial shock absorber, the axial shock absorber is composed of a metal framework and shock-absorbing rubber, the shock-absorbing rubber is in contact with the inner wall of the outer sleeve, and the axial shock absorber is internally fixedly installed with electronic elements;

[0007] A directional sensor is fixedly installed in the orientation measuring section of the outer sleeve, and one side of the directional sensor is fixedly connected with one side of the shock-absorbing rubber.

[0008] When the directional sensor is affected by axial vibration, the amplitude is transmitted to the shock-absorbing rubber in contact with the directional sensor, and the amplitude is offset by deformation of the shock-absorbing rubber, so that the amplitude is prevented from being transmitted to the electronic elements through the axial shock absorber; and when the outer wall of the outer sleeve is affected by amplitude, the amplitude is damped by the shock-absorbing rubber in contact with the inner wall of the outer sleeve.

[0009] In a preferred embodiment, a sealing ring is fixedly installed between the directional sensor and the inner wall of the outer sleeve.

[0010] When the directional sensor is affected by longitudinal vibration, the vibration is damped by the sealing ring.

[0011] In a preferred embodiment, mounting grooves are formed in the upper and lower ends of the metal framework, spring rods are fixedly installed in the mounting grooves, and one side of the spring rods is in contact with the inner wall of the outer sleeve.

[0012] The spring rods support the two sides of the metal framework, and when the outer sleeve is affected by vibration, the amplitude is damped by the spring rods, thereby reducing the vibration effect on the metal framework.

[0013] In a preferred embodiment, the shock-absorbing rubber is made of fluororubber.

[0014] The fluororubber has the characteristics of high temperature resistance, high pressure resistance, high fatigue strength, impact resistance and viscous anion.

[0015] In a preferred embodiment, the metal framework is an aluminum alloy framework.

[0016] In a preferred embodiment, a plurality of protruding tooth-shaped structures are arranged at the connection between the metal framework and the shock-absorbing rubber.

[0017] The tooth-shaped structures increase the contact surface between the metal framework and the shock-absorbing rubber, thereby improving the stability between the two.

[0018] As described above, the beneficial effects of the present application are as follows: the present application provides a damping device for rotary steerable drilling.

[0019] 1、When the directional sensor is affected by axial vibration, it transmits the amplitude to the damping rubber it contacts, and the amplitude is offset by the deformation of the damping rubber, so as to prevent the amplitude from being transmitted to the electronic element through the axial damper, and when the outer sleeve outer wall is affected by the amplitude, the damping rubber contacts the inner wall of the outer sleeve, so as to dampen the part of the amplitude through the damping rubber.

[0020] 2、The metal framework is supported on both sides by the spring rod, and when the outer sleeve is affected by vibration, the amplitude is damped by the spring rod, so as to reduce the vibration effect on the metal framework.

[0021] 3、When the directional sensor is affected by longitudinal vibration, the vibration is damped by the sealing ring. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the utility model;

[0023] Figure 2 It is the utility model Figure 1 A zoomed-in view of the utility model;

[0024] Figure 3 It is the utility model Figure 1 A zoomed-in view of the utility model B.

[0025] Marked in the figure: 1-outer sleeve; 2-axial damper; 3-directional sensor; 4-metal framework; 5-damping rubber; 6-electronic element; 7-mounting groove; 8-spring rod; 9-sealing ring. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0027] The embodiments of the utility model will be described below in conjunction with Figures 1-3 A damping device for rotary steerable drilling is described in detail in the embodiments of the utility model.

[0028] Embodiment:

[0029] A damping device for rotary steerable drilling, comprising:

[0030] The outer sleeve 1 is internally fixedly installed with an axial shock absorber 2, the axial shock absorber 2 is composed of a metal framework 4 and shock-absorbing rubber 5, the metal framework 4 is an aluminum alloy framework, the shock-absorbing rubber 5 is made of fluororubber, the fluororubber has the characteristics of high temperature resistance, high pressure resistance, high fatigue strength, impact resistance and viscous anion, a plurality of protruding tooth-shaped structures are arranged at the connecting position of the metal framework 4 and the shock-absorbing rubber 5, the tooth-shaped structure is arranged to improve the contact surface between the metal framework 4 and the shock-absorbing rubber 5, thereby improving the stability between the two;

[0031] The shock-absorbing rubber 5 is in contact with the inner wall of the outer sleeve 1, the axial shock absorber 2 is internally fixedly installed with an electronic element 6, when the directional sensor 3 is affected by axial vibration, the amplitude is transmitted to the shock-absorbing rubber 5 in contact with the directional sensor 3, the amplitude is offset by the deformation of the shock-absorbing rubber, thereby preventing the amplitude from being transmitted to the electronic element 6 through the axial shock absorber 2, at the same time, when the outer wall of the outer sleeve 1 is affected by the amplitude, the amplitude is damped by the shock-absorbing rubber 5 due to the contact between the shock-absorbing rubber 5 and the inner wall of the outer sleeve 1, the metal framework 4 is provided with a mounting groove 7 at both ends, a spring rod 8 is fixedly installed in the mounting groove 7, one side of the spring rod 8 is in contact with the inner wall of the outer sleeve 1, the metal framework 4 is supported on both sides by the spring rod 8, at the same time, when the outer sleeve 1 is affected by vibration, the amplitude is damped by the spring rod 8, thereby reducing the vibration effect on the metal framework 4;

[0032] The directional sensor 3 is fixedly installed in the directional measurement section of the outer sleeve 1, one side of the directional sensor 3 is fixedly connected with one side of the shock-absorbing rubber 5, and a sealing ring 9 is fixedly installed between the directional sensor 3 and the inner wall of the outer sleeve 1, when the directional sensor 3 is affected by longitudinal vibration, the vibration is damped by the sealing ring 9.

[0033] Working principle:

[0034] When the directional sensor 3 is affected by axial vibration, the amplitude is transmitted to the shock-absorbing rubber 5 in contact with the directional sensor 3, the amplitude is offset by the deformation of the shock-absorbing rubber, thereby preventing the amplitude from being transmitted to the electronic element 6 through the axial shock absorber 2, at the same time, when the outer wall of the outer sleeve 1 is affected by the amplitude, the amplitude is damped by the shock-absorbing rubber 5 due to the contact between the shock-absorbing rubber 5 and the inner wall of the outer sleeve 1.

[0035] The above examples are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A vibration damping device for rotary steerable drilling, characterized by: Include: The outer sleeve (1) is fixedly installed with axial shock absorber (2), the axial shock absorber (2) is composed of metal framework (4) and shock absorbing rubber (5), the shock absorbing rubber (5) is in contact with the inner wall of outer sleeve (1), the axial shock absorber (2) is fixedly installed with electronic element (6) inside; Directional sensor (3) is fixedly installed in the orientation measurement section of outer sleeve (1), one side of the directional sensor (3) is fixedly connected with one side of shock absorbing rubber (5).

2. A vibration reduction device for rotary steerabie drilling as claimed in claim 1, characterized in that: The sealing ring (9) is fixedly installed between the directional sensor (3) and the inner wall of the outer sleeve (1).

3. A vibration reduction device for rotary steerabie drilling as defined in claim 1, characterized in that: The metal framework (4) is provided with mounting groove (7) at both ends, the spring rod (8) is fixedly installed in the mounting groove (7), one side of the spring rod (8) is in contact with the inner wall of outer sleeve (1).

4. A vibration reduction device for rotary steerabie drilling as defined in claim 1, characterized in that: The shock absorbing rubber (5) is made of fluorine rubber.

5. A vibration reduction device for rotary steerabie drilling as defined in claim 1, wherein: The metal framework (4) is an aluminum alloy framework.

6. A vibration reduction device for rotary steerabie drilling as defined in claim 1, wherein: The connecting part of the metal framework (4) and the shock absorbing rubber (5) is provided with a plurality of convex tooth structure.

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