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Sliding block type downhole motor

A power drilling tool and sliding block type technology, which is applied to the driving device for drilling in the wellbore, earthwork drilling, drilling equipment, etc. The effect of high capacity, reducing the possibility of drilling tool damage

Pending Publication Date: 2017-08-18
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the output of power and rotational speed is greatly affected by the diameter of the drilling tool, and the greater the torque, the lower the rotational speed. When the working pressure difference is exceeded, the pump pressure suddenly rises, and the drilling tool will brake sharply.

Method used

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  • Sliding block type downhole motor
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Experimental program
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Embodiment Construction

[0021] See Figure 1 to Figure 4 As shown, the present invention includes a power nipple, which includes an upper end cover 1, a sealing ring 2, an upper rolling bearing 4, an upper housing 13, a nylon disc 14, a lower housing 15, a spline 16, a transition shaft 17, and a lower end cover 18. Lower rolling bearing 19, Glyy ring 20, lower sub-section 21, lower middle shaft 22, drive shaft sleeve 23, bearing set 24, TC sleeve 25, upper partition 26, lower static sleeve 27, lower drive shaft housing 28. First pin 31, second pin 32, third pin 33, fourth pin 34, fifth pin 35, first distribution shaft 51, second distribution shaft 52, third distribution shaft 53, first stator housing Body 61, second stator housing 62, third stator housing 63, first slider 71, second slider 72, third slider 73, first adjustment pad 81, second adjustment pad 82, third adjustment Pad 83, fourth adjustment pad 84, fifth adjustment pad 85, sixth adjustment pad 86, seventh adjustment pad 87, eighth adjustm...

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PUM

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Abstract

The invention discloses a sliding block type downhole motor which is composed of a power nipple and a lower transmission shaft assembly. A power nipple assembly and the lower transmission shaft assembly are connected in a threaded mode. The closed fluid pressure transmission mechanism is adopted by the power nipple assembly, a sliding block is driven to rotate through the pressure difference between a high-pressure cavity and a low-pressure cavity of each electric motor, and torque is transmitted through the lower transmission shaft assembly. The electric motors are connected in parallel to form a building block type multi-stage power driving system, the structure is simple, and disassembling is convenient. According to the downhole motor, the problems that output of power and rotating speeds of a conventional drill rig is greatly affected by the diameter of the drill rig, the torque is increased, and the rotating sped is lowered are solved. The high energy conversion rate and high rock breaking efficiency can be achieved, the good mechanical property and high overloading capacity are achieved, and the scheme is suitable for various downhole motors with large, medium and small diameters.

Description

Technical field [0001] The invention relates to the technical field of resource mineral drilling equipment, in particular to a sliding block type downhole dynamic resistance drilling tool, which is suitable for a series of small, medium and large-diameter power drilling tools. Background technique [0002] As my country's shallow mineral deposits and conventional oil and gas resources become less and less, and the grades are getting lower and lower, the geological exploration and development of deep mineral deposits and conventional and unconventional oil and gas resources has become one of the indispensable ways for the country's sustainable development. my country has abundant reserves of deep mineral resources and unconventional oil and gas resources such as shale oil, shale gas, coalbed methane, and natural gas hydrate. Efficient and rapid exploration and development of deep underground resources have a significant role and practical significance for enhancing my country's com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B4/02
CPCE21B4/02
Inventor 王清岩孙友宏马宇高科
Owner JILIN UNIV