Slim hole drilling friction reduction and resistance reduction speed increase tool

A technology for reducing friction and drag, and wellbore, which is applied in wellbore/well components, earthwork drilling, vibration generating devices, etc. The effect of few moving parts and compact structure

Inactive Publication Date: 2015-07-22
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Another type of tool is the active anti-friction tool, which converts the static friction between the drill string and the borehole wall into dynamic friction by generating vibration. The friction loss of dynamic friction is small, which can improve the efficiency of axial load transmission and thus improve drilling efficiency. Type anti-friction tools are complex in structure, long in axial dimension, reliability needs to be improved, and cost is high

Method used

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  • Slim hole drilling friction reduction and resistance reduction speed increase tool
  • Slim hole drilling friction reduction and resistance reduction speed increase tool
  • Slim hole drilling friction reduction and resistance reduction speed increase tool

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Embodiment Construction

[0015] specific implementation plan

[0016] Such as figure 1 As shown, a slimhole drilling tool of the present invention for reducing friction and increasing speed includes an upper nipple 2, a casing 6, and an inner chamber 4; it is characterized in that: the casing 6 and the upper nipple 2 are connected by threads, The housing 6 is provided with an inner chamber 4 located on a step 5, and the lower part is provided with a male button 7 connected with other drilling tool assemblies; the upper end of the upper nipple 2 is provided with a female button 1 connected with the upper drill tool assembly or drill string , the lower end is provided with a sealing groove for installing a sealing ring 3; the inner chamber

[0017] There is a special flow channel 17 in the 4, and the special flow channel 17 is composed of the nozzle 9, the drilling fluid reversing channel I10, the drilling fluid reversing channel II16, the return chamber 13, the drilling fluid pressure feedback channel...

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PUM

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Abstract

The invention discloses a slim hole drilling friction reduction and resistance reduction speed increase tool which is formed by an upper nipple, an inner cavity and a shell. A female thread connected with a drilling string or other drilling assemblies is arranged at the upper end of the upper nipple, a special flow channel is formed in the inner cavity, and a male thread connected with other drilling assemblies or an adapter above a drill bit is arranged at the lower end of the shell. The inner cavity is located in the shell and is in transition matching connection with the shell. The upper nipple is connected with the shell through the corresponding thread, abuts against the inner cavity in the shell and prevents the inner cavity from moving axially. The slim hole drilling friction reduction and resistance reduction speed increase tool is used for reducing friction force of the drilling string and a borehole wall in the slim hole drilling process, thereby improving slim hole drilling efficiency.

Description

technical field [0001] The invention relates to a slimhole drilling speed-increasing tool in petroleum and natural gas exploration and development. Specifically, the drilling fluid flows through the slimhole drilling friction-reducing speed-increasing tool, thereby generating oscillation and converting the static friction between the drill string and the well wall into Dynamic friction, and finally achieve the purpose of reducing friction and drag to increase drilling speed. technical background [0002] At present, with the development of oil and gas exploration to deeper formations, the advantages of slimhole drilling operations are becoming more and more obvious, so higher requirements are put forward for slimhole drilling operations. However, in deep wells, especially horizontal wells, the friction between the drill string and the well wall has always been a major problem in slimhole drilling. This frictional force increases with the increase of the inclination angle. D...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B28/00
CPCE21B28/00
Inventor 祝效华陈国银
Owner SOUTHWEST PETROLEUM UNIV
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