阅读说明：本技术 一种金属管柱内工具投放装置 (Tool throwing device in metal pipe column ) 是由 朱焕刚 赵洪山 于海叶 白立业 燕修良 韩玉华 朱晓明 宋中文 赵鹏 许强 李晓 于 2019-01-31 设计创作，主要内容包括：本发明公开了一种金属管柱内工具投放装置。所述投放装置包括磁体和固定连接装置；磁体安装在固定连接装置上,防止磁体与金属管柱内壁碰撞；固定连接装置下部连接需要在金属管柱内向下投放的工具；磁体、固定连接装置和工具安装成工具串,放在金属管柱内孔里释放,工具串在金属管柱内下落实现工具投放功能；磁体相对于金属管柱向下运动,工具串受到重力、磁吸力、摩擦力和电磁阻尼力,工具串下落速度限制在允许范围之内。本发明的优点是投放装置结构简单,投放速度可控,能够为工具仪器下放提供保护,提高工具仪器投放成功率。(The invention discloses a device for putting tools in a metal pipe column. The throwing device comprises a magnet and a fixed connecting device; the magnet is arranged on the fixed connecting device to prevent the magnet from colliding with the inner wall of the metal pipe column; the lower part of the fixed connecting device is connected with a tool needing to be put downwards in the metal pipe column; the magnet, the fixed connecting device and the tool are arranged into a tool string which is placed in an inner hole of the metal pipe column to be released, and the tool string falls in the metal pipe column to realize the tool throwing function; the magnet moves downwards relative to the metal pipe column, the tool string is subjected to gravity, magnetic attraction force, friction force and electromagnetic damping force, and the falling speed of the tool string is limited within an allowable range. The invention has the advantages that the releasing device has simple structure and controllable releasing speed, can provide protection for releasing the tool instrument and improve the releasing success rate of the tool instrument.)

1. The utility model provides a device is put in to instrument in metal tubular column which characterized in that: comprises a magnet (2) and a fixed connecting device (3); the magnet (2) is a magnetic field generating device, and the magnet (2) is provided with magnetic yokes up and down to guide magnetic lines; the magnet (2) is arranged on the fixed connecting device (3), and the lower part of the fixed connecting device (3) is provided with a connecting piece.

2. The metal pipe string inner tool launching device according to claim 1, characterised in that the magnet (2) is a cylindrical magnet.

3. The metal pipe string inner tool launching device according to claim 1, characterised in that the magnet (2) is a ring magnet.

4. The metal tubular column inner tool release device according to claim 1, 2 or 3, characterized in that the magnet (2) is a neodymium iron boron magnet.

5. The metallic in-string tool launching device according to claim 4, characterized in that the fixed connection device (3) material is a non-ferromagnetic material.

6. The metallic pipe string internal tool launching device according to claim 5, characterised in that the fixed connection device (3) connection piece is an articulated connection; the periphery of the fixed connecting device (3) is provided with a righting piece.

Technical Field

The invention relates to a throwing device for an oil drilling and production tool, in particular to a throwing device for a tool in a metal pipe column.

Background

In the oil drilling and production process, some operations of putting tools and instruments into a drill pipe or an oil pipe column are often encountered. Particularly, the gas is in the pipe column, and under the condition of no liquid damping, the tool is continuously accelerated in the descending process of the pipe column, and the tool is often damaged due to the too high falling speed of the tool, so that economic loss and drilling construction progress are influenced. Therefore, it is desirable to design a metal string internal launching device to limit the speed of the entire dropping tool string, thereby reducing the number of tools and reducing the number of tools and tools in the string, and protecting the safety and success rate of tool launching.

Disclosure of Invention

The invention aims to solve the problems in the prior art, and provides a device for releasing a tool in a metal pipe column, which avoids the damage of the tool caused by the over-high falling speed of the tool when the tool in the metal pipe column is released.

In order to achieve the purpose, the invention adopts the following design scheme:

a metal pipe column inner tool throwing device comprises a magnet and a fixed connecting device; the magnet is a magnetic field generating device, and magnetic yokes are arranged on the upper part and the lower part of the magnet to guide magnetic lines; the magnet is arranged on the fixed connecting device, and the lower part of the fixed connecting device is provided with a connecting piece.

The above scheme further comprises:

the magnet is a cylindrical magnet or a circular magnet.

The magnet is a neodymium iron boron magnet.

The fixed connecting device is made of non-ferromagnetic material.

The connecting piece of the fixed connecting device adopts a hinged connecting mode; the periphery of the fixed connecting device is provided with a righting piece.

The invention has the advantages that the releasing device has simple structure and controllable releasing speed, can provide protection for releasing the tool instrument and improve the releasing success rate of the tool instrument.

Drawings

Fig. 1 is a schematic view of a metal pipe string tool launching device of the present invention as it is lowered into a metal pipe string.

Fig. 2 is a schematic structural diagram of a first embodiment of a tool launching device in a metal tubular column according to the present invention.

Fig. 3 is a schematic structural diagram of a second embodiment of the device for launching a tool in a metal tubular column according to the present invention.

Fig. 4 is a schematic structural diagram of a third embodiment of the device for launching a tool in a metal tubular column according to the present invention.

In the figure: 1. the magnetic iron comprises a metal pipe column, 2, a magnet, 3, a fixed connecting device, 4, a tool, 30, upper pressing covers A, 31, an outer cylinder, 32, a hinge mechanism, 33, upper pressing covers B, 34, a mandrel, 35, an anti-collision sleeve and 36 a magnetic yoke.

Detailed Description

The invention is further described with reference to figures 1 to 4 of the accompanying drawings in which: