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Method and device for shocking by circulating drilling fluid

A technology of circulating drilling fluid and drilling fluid, which is applied in the direction of earthwork drilling, wellbore/well components, etc., can solve the problems of jar failure and other problems, and achieve the effect of overcoming a single jar and reducing the load

Active Publication Date: 2017-03-22
GUIZHOU GAOFENG GASOLINEEUM MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003]The object of the present invention is to provide a method and device for shocking by circulating drilling fluid, so as to solve the problem of existing shocks in highly deviated wells or horizontal well sections. The technical problem of striker failure, so as to overcome the deficiencies of the existing technology

Method used

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  • Method and device for shocking by circulating drilling fluid
  • Method and device for shocking by circulating drilling fluid

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Embodiment

[0023] During specific implementation, one end of the upper joint 1 is processed with a rectangular spline groove, the spline body 2 is loaded into the upper joint 1 through the spline pair, the throttle body 3 at the lower end directly withstands the step of the inner hole of the spline body 2, and the transmission sleeve 4 and the joint The fluid upper joint is threaded, the transmission sleeve 4 and the transmission shaft 8 are matched by a spline pair, and the transmission shaft 8 is threaded with the spline body 2, and the upper end hole of the transmission shaft 8 is equipped with a thick spring 5 and a thin spring 7 And spring guide sleeve 6 and piston 9. A valve seat 10 is installed on the upper end of the transmission shaft 8, a spring seat 15, an energy storage spring 16 and an adjustment sleeve 17 are installed on the lower end, and the transmission shaft 8, the middle cylinder 12, and the lower joint 18 are integrally connected by threads.

[0024] Below the course...

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Abstract

The invention discloses a method and device for achieving shock through circulating drilling fluid. According to the method, a shock rod is pushed to overcome energy storage spring counter-acting force to descend through pressure, generated in a piston upper cavity, of the drilling liquid, and the potential energy is accumulated by an energy storage spring in the compression process; then in the descending process of the shock rod, the pressure of a piston lower cavity gradually rises; then a pressure relief channel in the piston lower cavity is opened through a valve rod at the bottom of a piston, the potential energy accumulated by the energy storage spring is released instantly and converted into upward shock kinetic energy of the shock rod, one-time upward shock process is finished, and the process is repeated to achieve continuous one-way shock. According to the method and device for achieving shock, shock is generated through the circulating drilling fluid, and quick and continuous shock can be provided for a clamping point. The load of a drilling pillar can be effectively lowered, and the service life of pipe pillars, such as a drill rod and a drill collar can be prolonged; meanwhile, ground bearing equipment can be protected.

Description

technical field [0001] The invention relates to a method and a device for realizing jarring by circulating drilling fluid, and belongs to the technical field of downhole tools. Background technique [0002] Drilling sticking accident is the most common and most likely downhole engineering accident in drilling construction. When a drilling tool with a length of several kilometers is working in a well, it often occurs that the drilling tool cannot be lifted up, lowered or rotated due to reasons such as the well wall falling off or collapsing, which is called a stuck pipe accident in drilling. The tool for handling drill stuck accidents is a jar, which forces the stuck drill string to move up and down repeatedly to achieve the purpose of releasing the stuck drill. There are two types of jars in the prior art: mechanical type and hydraulic type, which are classified according to different release mechanisms. Essentially, the drill string above the sticking point is forced to el...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B31/113
CPCE21B31/113
Inventor 鄢红江沈赤卫补声军曹良波李杰孙明明王辉郑婷碧梁柔
Owner GUIZHOU GAOFENG GASOLINEEUM MACHINERY
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