CN212428581U

CN212428581U - Spiral coupler based on inertial navigation

Info

Publication number: CN212428581U
Application number: CN202021314527.9U
Authority: CN
Inventors: 强瑜; 范翔宇; 谢炜; 周跃云; 张千贵; 汪丹; 赵鹏斐; 张明明; 么勃卫
Original assignee: Southwest Petroleum University
Current assignee: Southwest Petroleum University
Priority date: 2020-07-07
Filing date: 2020-07-07
Publication date: 2021-01-29
Anticipated expiration: 2030-07-07

Abstract

The utility model discloses a helical coupler based on inertial navigation, it includes coupler outer lane, coupler inner circle, core, damping spring, characterized in that: the damping spring surrounds the core body, the coupler inner ring is in coupling connection with the core body, and the coupler outer ring is in coupling connection with the coupler inner ring. The utility model discloses can realize axial displacement and radial rotation simultaneously along predetermined guide rail under the inertia effect, lift the in-process at the drilling tool, the purpose of locking location is realized to outer lane and well core body swivelling coupling in the coupler.

Description

Spiral coupler based on inertial navigation

Technical Field

The utility model belongs to the technical field of rotary steering drilling system and specifically relates to a helical coupling ware based on inertial navigation.

Background

A Rotary Steerable drilling system (RSS for short) is a Steerable drilling system that performs steering function while drilling in real time when a drill string is rotationally drilled, and is the main content of closed-loop automatic drilling, which is the highest stage of drilling technology development in the world today. The rotary steering drilling system has the advantages that the underground tool always works in a rotary state, so that the well hole purification effect is good, the well body track control precision is high, the displacement extension capacity is strong, the rotary steering drilling system is suitable for high-difficulty drilling construction operations of extended reach wells, horizontal wells, three-dimensional complex structure wells and the like, and the inertial navigation coupler of the RSS system is an important support for realizing ground control and adjustment of drilling tools.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a helical coupler based on inertial navigation.

In order to achieve the above object, the utility model adopts the following technical scheme:

the utility model discloses a coupler outer lane, coupler inner circle, core, damping spring, a serial communication port, damping spring centers on the core, the coupler inner circle is connected with the core coupling, coupler outer lane and coupler inner circle coupling connection.

Furthermore, the outer ring of the coupler is fixedly connected to the inner wall of the new tool shell in a rotating mode, is of a hollow structure, is internally provided with a single-end trapezoidal spiral groove, is matched with a spiral trapezoidal guide rail on the inner ring of the coupler, and is used for transmitting torque from the core body; the lower end part is provided with an annular groove for connecting with the inner ring of the coupler.

Furthermore, the inner ring of the coupler is also of a hollow structure, an annular shaft shoulder is arranged at the head part of the inner ring and is embedded in an annular groove at the lower end part of the outer ring of the coupler through a bearing, and the lower part of the inner ring is connected with the upper tray of the core body through a damping spring. The spiral trapezoidal guide rail on the periphery is matched with the single-head trapezoidal spiral groove on the outer ring of the coupler and is used for transmitting torque from the core body.

Furthermore, the periphery of the core body is provided with a single-head trapezoidal spiral guide rail which is coupled with a trapezoidal spiral groove of the inner ring of the coupler. The lower part is provided with a protruding shaft section which is used for fixedly connecting the core body and the central shaft and supporting the damping spring.

Furthermore, the damping spring is located between the coupler inner ring and the tray and is mainly used for reducing impact caused by gravity when a drill is put and improving stability of the mechanism.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses can realize axial displacement and radial rotation simultaneously along predetermined guide rail under the inertia effect, lift the in-process at the drilling tool, the purpose of locking location is realized to outer lane and well core body swivelling coupling in the coupler. The structure is simple and exquisite, and the locking and positioning functions can be effectively realized.

Drawings

FIG. 1 is a schematic diagram of a helical coupler based on inertial navigation.

The coupler comprises a core body, a damping spring, a coupler inner ring and a coupler outer ring.

Detailed Description

The present invention will be further described with reference to the following examples, which are not intended to limit the scope of the invention.

As shown in fig. 1, the utility model discloses a coupler outer lane, coupler inner circle, core, damping spring. When the locking positioning device works, axial movement and radial rotation are simultaneously realized along the preset guide rail under the action of inertia, and in the lifting process of the drilling tool, the inner ring and the outer ring of the coupler and the middle core body are rotationally coupled to realize the purpose of locking and positioning.

The outer ring of the coupler is fixedly connected to the inner wall of the new tool shell in a rotating mode, is of a hollow structure, is internally provided with a single-end trapezoidal spiral groove, is matched with a spiral trapezoidal guide rail on the inner ring of the coupler, and is used for transmitting torque from the core body; the lower end part is provided with an annular groove for connecting with the inner ring of the coupler.

The inner ring of the coupler is also of a hollow structure, the head part is provided with an annular shaft shoulder which is embedded in an annular groove at the lower end part of the outer ring of the coupler through a bearing, and the lower part is connected with the upper tray of the core body through a damping spring. The spiral trapezoidal guide rail on the periphery is matched with the single-head trapezoidal spiral groove on the outer ring of the coupler and is used for transmitting torque from the core body.

The periphery of the core body is provided with a single-end trapezoidal spiral guide rail which is coupled with a trapezoidal spiral groove of the inner ring of the coupler. The lower part is provided with a protruding shaft section which is used for fixedly connecting the core body and the central shaft and supporting the damping spring.

The damping spring is positioned between the coupler inner ring and the tray and is mainly used for reducing impact caused by gravity when a drill is put in, and the stability of the mechanism is improved.

The working principle of the utility model is as follows:

the RSS spiral coupler based on inertial navigation consists of four parts, namely a coupler outer ring, a coupler inner ring, a core body and a damping spring. In the lifting process of the drilling tool, due to the inertial navigation effect of the guide rail, the inner ring of the coupler spirally rises along the core guide rail and is coupled with the outer ring of the coupler fixed on the inner wall of the tool until the inner ring of the coupler completes a complete circular rotation to reach a locking position, so that locking and positioning are realized. When the unlocking is needed, the drilling tool is only required to be lowered down, and the outer ring of the coupler reversely rotates under the action of inertia and gravity until complete circumferential rotation is completed and the outer ring returns to the reset state.

The above embodiment is only one of the preferred embodiments of the present invention, and should not be used to limit the protection scope of the present invention, but all the insubstantial changes or modifications made in the spirit and the idea of the main design of the present invention, the technical problems solved by the embodiment are still consistent with the present invention, and all should be included in the protection scope of the present invention.

Claims

1. The spiral coupler based on inertial navigation comprises a coupler outer ring, a coupler inner ring, a core body and a damping spring, and is characterized in that the damping spring surrounds the core body, the coupler inner ring is in coupling connection with the core body, and the coupler outer ring is in coupling connection with the coupler inner ring.

2. The inertial navigation-based helical coupler of claim 1, wherein the outer ring of the coupler is fixedly connected to the inner wall of the housing of the rotary steerable tool, is hollow, and has a single-ended trapezoidal spiral groove therein, and the single-ended trapezoidal spiral groove is matched with the helical trapezoidal guide rail on the inner ring of the coupler for transmitting the torque from the core; the lower end part is provided with an annular groove for connecting with the inner ring of the coupler.

3. The inertial navigation-based helical coupler of claim 1, wherein the coupler inner ring is also hollow, the head portion has an annular shoulder inserted into an annular groove at the lower end portion of the coupler outer ring through a bearing, the lower portion is connected with the core upper tray through a damping spring, and the outer periphery has a helical trapezoidal guide rail matched with the single-ended trapezoidal spiral groove of the coupler outer ring for transmitting the torque from the core.

4. The inertial navigation-based screw coupler of claim 1, wherein the core has a single-ended trapezoidal spiral track on its outer periphery for coupling with the trapezoidal spiral groove of the inner race of the coupler, and a protruding shaft section on its lower portion for fixedly connecting the core to the central shaft and supporting the damper spring.

5. The inertial navigation-based screw coupler of claim 1, wherein the damping spring is located between the coupler inner ring and the tray and is mainly used for reducing impact caused by gravity when drilling and improving stability of the mechanism.