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Single-motor and hydraulic-clutch driven horizontal well crawl device

A single motor, horizontal well technology, applied in wellbore/well components, measurement, construction, etc., can solve problems such as complex structure, and achieve the effect of simplifying structure, reducing cost, and improving reliability

Inactive Publication Date: 2018-04-06
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the logging and post-production testing of horizontal wells is still a difficult problem in the development of horizontal wells. One of the main difficulties is how to lower the logging instrument to the top of the horizontal section.
In the prior art, a horizontal well crawler is usually used to transport the logging instrument to the target position, but the existing horizontal well crawler has a complicated structure

Method used

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  • Single-motor and hydraulic-clutch driven horizontal well crawl device
  • Single-motor and hydraulic-clutch driven horizontal well crawl device

Examples

Experimental program
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Effect test

Embodiment Construction

[0034] The horizontal well crawler driven by a single motor and hydraulic clutch of the present invention will be described in detail below with reference to the accompanying drawings.

[0035] refer to figure 1 with figure 2 , the horizontal well crawler driven by a single motor and hydraulic clutch according to the present invention includes a casing 1 , a power mechanism 2 , a traveling mechanism 3 , a clutch mechanism 4 and a hydraulic mechanism 5 .

[0036] The casing 1 accommodates the power mechanism 2 , the travel mechanism 3 , the clutch mechanism 4 and the hydraulic mechanism 5 . The shell 1 is used to protect, seal, resist pressure and fix the power mechanism 2 , the travel mechanism 3 , the clutch mechanism 4 and the hydraulic mechanism 5 .

[0037] The power mechanism 2 includes a motor 21 and a transmission shaft 22 driven by the motor 21 . The motor 21 can be a submersible motor. The motor 21 is connected to an external power source through a cable.

[003...

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Abstract

The invention provides a single-motor and hydraulic-clutch driven horizontal well crawl device comprising a shell, a power mechanism, a travelling mechanism, a clutch mechanism and a hydraulic mechanism. The shell contains the power mechanism, the travelling mechanism, the clutch mechanism and the hydraulic mechanism. The power mechanism comprises a motor and a transmission shaft driven by the motor, the travelling mechanism comprises an opening and closing assembly and two traction assemblies, and each traction assembly comprises a connecting rod, a supporting arm and an idler wheel. The opening and closing assembly drives the two supporting arms through the connecting rods to be closed up towards the center or expanded towards the two opposite sides, and the idler wheels move out of theshell when the two supporting arms are expanded. The clutch mechanism comprises two oppositely-arranged matched tooth discs, and one matched tooth disc is fixed to a transmission shaft. The hydraulicmechanism comprises a hydraulic pump, a clutch hydraulic cylinder, an opening and closing hydraulic cylinder, an energy storage, a control valve and a hydraulic pipeline. The other matched tooth discof the clutch mechanism is fixed to the hydraulic pump, the clutch hydraulic cylinder comprises a first cylinder body and a first piston rod, and the opening and closing hydraulic cylinder comprises asecond cylinder body and a second piston rod.

Description

technical field [0001] The invention relates to the field of petroleum well logging, in particular to a horizontal well crawler driven by a single motor and a hydraulic clutch. Background technique [0002] At present, major oil fields attach great importance to the development of horizontal wells, because the production of horizontal wells is large, usually 3-5 times that of vertical wells, so the results are quick. However, the logging and post-production testing of horizontal wells is still a difficult problem in the development of horizontal wells. One of the main difficulties is how to lower the logging instrument to the top of the horizontal section. In the prior art, a horizontal well crawler is usually used to transport the logging instrument to a target position, but the existing horizontal well crawler has a complicated structure. Contents of the invention [0003] In view of the problems in the background technology, the object of the present invention is to pr...

Claims

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Application Information

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IPC IPC(8): E21B23/00E21B47/00
CPCE21B23/00E21B23/001E21B47/00
Inventor 杨东超张洪君常旭李树全陈恳张福兴李洪军孙可平
Owner TSINGHUA UNIV
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