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Eccentric adjustment coupling for mud motors

A coupling and motor technology, applied in the application field that needs to transmit large torque along the transmission part, can solve problems such as insufficient clearance and interference

Inactive Publication Date: 2015-03-11
SMITH INT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, as shown, there is insufficient clearance and potential interference between the drive shaft 110 and the inner surface 106 of the adjustable bend housing assembly 100

Method used

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  • Eccentric adjustment coupling for mud motors
  • Eccentric adjustment coupling for mud motors
  • Eccentric adjustment coupling for mud motors

Examples

Experimental program
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Embodiment Construction

[0012] In one aspect, embodiments disclosed herein relate to transmission sections for drilling motors used to drill boreholes in the oil and gas industry, particularly in applications requiring high torque transmission along the transmission section. Embodiments of the present invention also relate to a transmission portion of a drilling motor having a housing assembly (eg, an adjustable housing assembly) having a bore formed therein that is off-center with respect to the center of the housing assembly, rather than through the housing assembly. Concentric holes formed by housing components. A diagram of each of these embodiments is shown.

[0013] As the transmission section grows stronger, the propshaft, which transmits torque to the drive shaft, is experiencing greatly increased torque. The extra force or torque requires that the drive shaft be designed with a larger shaft diameter than before. This larger diameter results in a larger hole formed through the bent housing ...

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Abstract

According to one aspect, there is provided a drilling motor assembly having a power section configured to generate torque, a transmission section coupled to the power section, and a bearing section coupled to the transmission section, the bearing section configured to couple to a drill bit. The transmission section includes a housing assembly having a bore formed therethrough, the housing assembly having a central axis defined therethrough and the bore having a central axis defined therethrough, in which the central axis of the bore is radially offset from the central axis of the housing assembly.

Description

technical field [0001] Embodiments disclosed herein generally relate to a drilling motor having a transmission section for transferring torque from a power section to a bearing section. More specifically, embodiments disclosed herein relate to transmission sections for drilling motors used in the oil and gas industry to drill boreholes, particularly in applications requiring high torque transmission along the transmission section. Background technique [0002] A drilling motor, often referred to as a mud motor, is a tool assembled to the drill string that uses hydraulic pressure to turn the drill bit by pumping drilling fluid or gas through the center of the drilling motor. The drilling motor includes three main parts: a power part, a transmission part, and a bearing part. The power section is the part of the drilling motor that generates power by pumping fluid or gas through a pump, such as a progressive cavity pump. The pump rotates the inner component while the outer co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B17/03E21B21/01E21B21/08
CPCE21B17/03E21B21/08E21B21/01E21B7/067E21B4/02
Inventor W·默里S·科莱特
Owner SMITH INT INC