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A motor for driving drilling tools downhole

A technology of motors and motor casings, applied in the field of motors, can solve problems such as increased operating costs, accelerated drilling speed, and large losses, and achieves the effects of high energy conversion efficiency, improved work efficiency, and high adaptability

Active Publication Date: 2019-03-22
中曼石油装备集团有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above drill bit driving methods have the following disadvantages: 1) The energy transmission path is long and the loss is large; 2) The effective utilization and conversion efficiency of energy is low; 3) The upper limit of the working speed of the drill disc, top drive device and screw drilling tool of the conventional drive bit is generally at 300 rpm, it is difficult to increase the drilling speed by increasing the bit speed; 4) In addition, when drilling with a screw drilling tool, the life of the screw drilling tool itself is short, usually only one or two hundred hours, which undoubtedly increases the operating cost and reduces the Drilling effective time

Method used

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  • A motor for driving drilling tools downhole
  • A motor for driving drilling tools downhole
  • A motor for driving drilling tools downhole

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as figure 1 , figure 2 , image 3 , Figure 4 with Figure 5 As shown, a motor for driving downhole drilling tools. The overall structure of the motor is slender cylindrical. The motor includes a motor housing 7, a stator, a rotor shaft 9, an upper rotor support bearing 5, a lower rotor support bearing 28, and an upper bearing The seat 6, the lower bearing seat 13, the male conductive ring 2, the female conductive ring 14, the connecting spline sleeve 1, the upper spline positioning bearing 3, and the lower spline positioning bearing 27.

[0037] The rotor shaft 9 has a hollow cylindrical structure, the hollow part of the rotor shaft 9 is a mud channel 21, and a connecting spline sleeve 1 is provided outside the front end of the rotor shaft 9, and the connecting spline sleeve 1 is provided There is a mud passage sealing ring 20, which seals the mud in the mud passage 21, and places the mud into the lubrication part of the bearing, which affects the life of the bearing...

Embodiment 2

[0049] Such as Image 6 , Figure 7 with Figure 8 As shown, two motors of the present invention are connected together. The number of connected motors of the present invention can also be one or more. The two motors of the present invention are the first module motor 100 and the second module motor 101. The motor of the present invention is designed and produced in accordance with standardization and modularization. The first modular motor 100 and the second modular motor 101 have the same size and structure, and become an integral motor after being connected to drive the drill bit 17 to rotate.

[0050] A motor for driving downhole drilling tools. The overall structure of the motor is a slender cylindrical shape. The motor includes a motor housing 7, a stator, a rotor shaft 9, an upper rotor support bearing 5, a lower rotor support bearing 28, an upper bearing seat 6, Lower bearing seat 13, male conductive ring 2, female conductive ring 14, connecting spline sleeve 1, upper spli...

Embodiment 3

[0064] Such as Picture 9 , Picture 10 with Figure 4 As shown, a motor for driving downhole drilling tools. The overall structure of the motor is slender cylindrical. The motor includes a motor housing 7, a stator, a rotor shaft 9, an upper rotor support bearing 5, a lower rotor support bearing 28, and an upper bearing The seat 6, the lower bearing seat 13, the male conductive ring 2, the female conductive ring 14, the connecting spline sleeve 1, the upper spline positioning bearing 3, and the lower spline positioning bearing 27.

[0065] The rotor shaft 9 has a hollow cylindrical structure, the hollow part of the rotor shaft 9 is a mud channel 21, and a connecting spline sleeve 1 is provided outside the front end of the rotor shaft 9, and the connecting spline sleeve 1 is provided There is a mud passage sealing ring 20, which seals the mud in the mud passage 21, and places the mud into the lubrication part of the bearing, which affects the life of the bearing.

[0066] The fron...

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PUM

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Abstract

The present invention relates to a motor for driving a drilling tool underground. The total structure of the motor is an elongated cylinder. The motor comprises a motor housing (7), a stator, a rotor shaft (9), an upper rotor back-up bearing (5), a lower rotor back-up bearing (8), an upper bearing base (6), a lower bearing base (13), a male conducting ring (2), female conducting ring (14), a connection spline (22), a connection spline sleeve (1), an upper spline location bearing (3) and a lower spline location bearing (27). The motor employs standard and modular design production and can perform one or more than one cooperation usage. The energy conversion efficiency is high, the cost is low and the usage is convenient.

Description

Technical field [0001] The invention relates to an oil drilling downhole drilling tool power driving system, in particular to an electric motor for driving downhole drilling tools. Background technique [0002] In the fast-developing modern society, oil, coal, and natural gas as commonly used energy and chemical raw materials have always maintained a huge demand. These resources are buried deep underground, and their exploitation usually requires drilling and drilling tools. The drill bit of the drilling tool needs a motor to drive and rotate for drilling operations. [0003] At present, there are two ways to drive the downhole bit to rotate: one is to use a rotary table on the ground or a top drive device to drive the downhole bit to rotate through the drill pipe, and the other is to use a mud pump to transport the mud to the well, and then use a screw drilling tool to drive the mud The energy is converted into rotational power to drive the drill bit to rotate. The above drill b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K7/14H02K5/16
CPCH02K5/16H02K7/14
Inventor 隋绍元
Owner 中曼石油装备集团有限公司
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