Single ball throwing type repeated circulating valve

A multi-circulation, single-ball technology, which is applied to wellbore/well valve devices, wellbore/well components, earthwork drilling and production, etc., can solve the problems of limited opening times of circulation valves, and achieve high compatibility and versatility Good, high safety factor effect

Inactive Publication Date: 2017-01-11
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a single-ball throwing multiple circulation valve in order to solve the problem that the opening times of the existing circulation valve are limited and the valve needs to be tripped repeatedly to reset the valve.

Method used

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  • Single ball throwing type repeated circulating valve
  • Single ball throwing type repeated circulating valve
  • Single ball throwing type repeated circulating valve

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with accompanying drawing:

[0017] Referring to the accompanying drawings, the single-ball throwing multiple cycle valve includes an upper joint 1, a housing 2, a ball throwing 3, a ball seat 4, a sleeve 5, a piston nozzle 6, a valve piston 7, a housing nozzle 8, and an indexing control body 9 , spindle 10, fixed pin 11, spring 12, spring positioning sleeve 13, floating piston 14, lower joint 15; the upper joint 1, the housing 2, and the lower joint 15 are connected by threads in turn; the housing 2 is set There is a housing nozzle 8, and a sleeve 5 is installed in the housing 2; a ball seat 4 is arranged on the top of the valve piston 7, and when the ball is in the working state, the ball 3 is set and sealed on the ball seat 4; the middle part of the valve piston 7 is designed with a piston nozzle 6 The lower end of the valve piston 7 is connected with the indexing control body 9 through a screw thre...

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Abstract

The invention relates to a single ball throwing type repeated circulating valve. The single ball throwing type repeated circulating valve mainly comprises a casing, a valve piston and a transposition control main body, wherein a casing nozzle is mounted on the casing, meanwhile, the valve piston and the transposition control main body are mounted in the casing, and sliding in the axial direction of the casing can be realized; through holes are formed in the casing, the valve piston and the transposition control main body, a main fluid channel is formed, the casing nozzle is blocked by the valve piston in a first valve position, and communication between the main fluid channel and annulus space is cut off; the casing nozzle is not blocked by the valve piston in a second valve position, so that the fluid can pass through the casing nozzle along the main fluid channel and is transferred to the annulus space; the transposition control main body is provided with a control groove track combined with a fixing pin, and the valve piston is guided to be switched between the first valve position and the second valve position accordingly. With the adoption of the single ball throwing type repeated circulating valve in a drilling operation process, removal of rock debris in the annulus space can be accelerated, a downhole drilling tool assembly is protected, the drilling efficiency is improved, and the drilling cost is reduced.

Description

technical field [0001] The invention relates to a single-ball throwing multi-circulation valve used in the field of petroleum and natural gas engineering and mainly used in the drilling operation process, especially in the drilling process of extended displacement wells and horizontal wells. Background technique [0002] When drilling an oil well or a gas well, first drill a drill hole, then install a drilling rig on the drill hole, lower the drill string consisting of a drill bit, drill collar, kelly, etc. into the well, make the drill bit touch the drill hole, and prepare Start drilling. In the normal drilling process, start the ground or downhole power drive system, drive the drill bit to rotate through the drill string, control the force of the drill string on the drill bit with the help of the brake system, and apply appropriate drilling pressure to the drill bit to break the rock; at the same time, the drilling fluid is turned on The pump circulates the drilling fluid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B34/06E21B34/08
CPCE21B34/06E21B34/08
Inventor 田家林张堂佳杨琳李居瑞杨毅林晓月朱志
Owner SOUTHWEST PETROLEUM UNIV
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