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Direct-drive type electric top drive for well drilling

A direct-drive, electric technology, applied in drilling equipment, electric components, electromechanical devices, etc., can solve the problems of complex structure of mechanical variable-speed transmission mechanism, high processing technology requirements, and high difficulty in top drive lubrication, so as to reduce the failure rate of equipment use. effect on maintenance intensity, avoidance of oil spills, and enhanced ability to cope with drilling accidents

Inactive Publication Date: 2020-09-22
山东汉德自动化控制设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the difficulty of top drive lubrication and high sealing failure rate caused by the complex working conditions of the top drive device under the harsh working environment, such as load, torque, jump or sticking, and the mechanical speed change transmission mechanism. The problem of complex structure and high processing technology requirements

Method used

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  • Direct-drive type electric top drive for well drilling
  • Direct-drive type electric top drive for well drilling

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Embodiment Construction

[0018] A direct-drive electric top drive for drilling, including a main shaft 21, a motor 6 and a motor stator housing 7; the motor 6 is installed in the motor stator housing 7, and an upper box 4 is installed on the upper end of the motor stator housing 7 , the lower end is equipped with a load-bearing box 11; the main shaft 21 runs through the upper box 4, the motor 6 in the motor stator housing 7 and the load-bearing box 11 from top to bottom; the motor rotor 9 in the motor 6 passes through the motor The elastic taper sleeve 8 is connected with the main shaft 21; the disc brake assembly 3 is installed in the upper box body 4; the brake disc 2 in the disc brake assembly 3 is connected with the main shaft 21 through the brake elastic taper sleeve 15; the load-bearing The upper part in the box body 11 is provided with a load-bearing bearing 10, and the load-bearing bearing 10 is connected with the main shaft 21;

[0019] As an optimization, a thrust bearing 17 is arranged on t...

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Abstract

The invention discloses a direct-drive type electric top drive for well drilling, and relates to the field of top drive devices of petroleum drilling technologies. The electric top drive comprises anupper box, a motor, a spindle and a bearing box, wherein the upper portion of the motor is connected with the upper box, the lower portion of the motor is connected with the bearing box, and a motor rotor is connected to the spindle; a lifting ring is arranged on the upper portion of the upper box, a disc brake assembly is arranged in the upper box, and a brake disc of the disc brake assembly is connected to the spindle through a taper sleeve; and the upper box is connected with the bearing box through bearing stand columns at the four corners of the motor, a load bearing is arranged on the upper portion in the bearing box and connected to the spindle, and a thrust bearing is arranged at the lower end of the load bearing and connected to the spindle. Compared with the prior art, the electric top drive has the advantages of no load on a motor shell, compact structure, no reduction gearbox, energy conservation and consumption reduction.

Description

technical field [0001] The invention relates to the field of top drive devices for oil drilling technology, in particular to a direct-drive electric top drive for drilling. Background technique [0002] The top drive device is a drilling device that directly drives the drilling tool from the top of the derrick for rotary drilling, and can complete various drilling operations such as circulating drilling fluid, connecting vertical roots, making up and breaking out, and back reaming. With the increase of deep wells, ultra-deep wells and complex wells in the process of oil and gas exploration and development, the demand for top drive at home and abroad is becoming more and more urgent. Top drive devices have now become the standard configuration of drilling rigs. However, because the working environment of the top drive is very harsh, and it is often subjected to complex working conditions such as load, torque, jump or stuck pipe, the requirements for the structure of the top d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B3/02H02K7/00
CPCE21B3/02H02K7/003
Inventor 张贤德刘洪伟侯瑞方张新峰
Owner 山东汉德自动化控制设备有限公司
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