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Piston type particle continuous injection system

An injection system, piston-type technology, applied in drilling equipment, drilling equipment and methods, earthwork drilling and production, etc., can solve the problems of uneven injection, unstable pressure, and easy damage of rotary blades, so as to reduce the range and improve the working efficiency efficiency effect

Inactive Publication Date: 2017-09-26
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the existing particle injection devices at home and abroad cannot truly realize the stable, uniform and continuous injection of particles.
The negative pressure injection particle injection system has disadvantages such as unstable pressure and uneven injection; the screw extrusion particle injection system has poor sealing performance and serious wear, which limits its popularization and application; Disadvantages such as easy damage to leaves and more heat
The above situation seriously restricts the industrialization process of particle impact drilling technology, and the problems existing in the particle injection device need to be solved urgently

Method used

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  • Piston type particle continuous injection system
  • Piston type particle continuous injection system
  • Piston type particle continuous injection system

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with accompanying drawing:

[0020] Such as Figure 1 ~ Figure 4 As shown, the piston-type particle continuous injection system of the present invention includes a crank connecting rod device, a piston device, a power device and a feeding device, the crank connecting rod device includes a crank 9 and a rotating shaft 10, and one end of the crank 9 is sleeved on the rotating shaft 10 , the other end is connected to the piston device, the rotating shaft 10 is connected to the power device, the piston device includes a piston cylinder 8, a piston 13 is arranged in the piston cylinder 8, the piston 13 is connected to the piston rod 12, the piston rod 12 is connected to the crank 9, and the end of the piston cylinder 8 is connected to the feeding device , the feeding device communicates with the high-pressure drilling fluid main manifold 7. The feeding device includes a hopper 4, the hopper 4 is supported ...

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Abstract

The invention belongs to the technical field of petroleum drilling engineering, and in particular, relates to a piston type continuous particle injection system. The system comprises crank connecting rod devices, piston devices, a power device and a feeding device, wherein each crank connecting rod device comprises a crank and a rotating shaft; one end of each crank coats the corresponding rotating shaft, and the other end is connected with the corresponding piston device; the rotating shafts are connected with the power device; each piston device comprises a piston cylinder; a piston is arranged in the piston cylinder, and is connected with a piston rod; each piston rod is connected with the corresponding crank; the tail end of each piston cylinder is connected with the feeding device; and the feeding device is communicated with a drilling liquid high-pressure main pipe. The system adopts two sets of identical crank connecting rod devices and piston devices; the two sets of devices synchronously operate and alternately work; under the condition of not changing the pressure of the high-pressure main pipe, particles with fixed concentration are always kept in the pipe, so that the continuous injection of the particles is really realized; the system can continuously work for a long time, so that the working efficiency is improved; and meanwhile, the system reduces the range of a high-pressure operation area.

Description

technical field [0001] The invention relates to a piston type particle continuous injection system, which belongs to the technical field of petroleum drilling engineering. Background technique [0002] Particle impact drilling technology is one of the effective ways to increase the drilling speed of deep wells, ultra-deep wells and hard formations. The particle injection device continuously injects steel particles into high-pressure drilling fluid at a certain rate, which is realized by particle impact drilling technology. premise and key. [0003] At present, the existing particle injection devices at home and abroad cannot truly realize the stable, uniform and continuous injection of particles. The negative pressure injection particle injection system has disadvantages such as unstable pressure and uneven injection; the screw extrusion particle injection system has poor sealing performance and serious wear, which limits its popularization and application; The leaves are ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B7/16
Inventor 王瑞和郑飞王方祥
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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