A blocking hydraulic pulse generating device and method

A technology of hydraulic pulse and generation device, which is applied to measurement devices, earth-moving drilling, and production of fluids, etc., can solve the problems that the effect of pulse fracturing or rock breaking cannot be quantitatively evaluated indoors, and there are few devices.

Active Publication Date: 2017-07-18
CHONGQING INST OF GEOLOGY & MINERAL RESOURCES
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are relatively few parameter-controllable experimental devices for hydraulic pulse generation, and the effects of pulse fracturing or rock breaking cannot be quantitatively evaluated indoors

Method used

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  • A blocking hydraulic pulse generating device and method
  • A blocking hydraulic pulse generating device and method
  • A blocking hydraulic pulse generating device and method

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Experimental program
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Embodiment Construction

[0014] Further illustrate the present invention below in conjunction with accompanying drawing:

[0015] see figure 1 and figure 2 , The blocking hydraulic pulse generating device mainly includes a hydraulic motor governor 1, a hydraulic motor 2, a sealing chamber 4, a liquid chamber 6, a rotor 13 and a blocking piece.

[0016] Wherein, the main body is the liquid chamber 6, the sealing chamber 4 and the rotor 13, and the material of the device is stainless steel. The hydraulic motor 2 and the governor 1 are connected to the rotor 13 to control the rotation of the rotor.

[0017] There is a hole in the middle of the rotor that leads axially downward, which is set as a fluid channel 10 with an inner diameter of Φ8mm. The side wall of the rotor has a radial through hole that communicates with the axial flow channel 10 as the rotor fluid inlet channel 16 , There are arc-shaped grooves 14 symmetrically formed on both sides of the inlet of the sub-fluid inlet channel. The roto...

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Abstract

The invention relates to a blocking hydraulic pulse generating device and method. The device is mainly composed of a hydraulic motor, a governor, a liquid chamber, a sealing chamber, a rotor, a blocking piece and the like. Among them, the on-off of the hydraulic pulse is jointly controlled by the rotor and the replaceable blocking piece. The waveform and frequency of the pulse can be controlled by using the length of the replaceable blocking piece on the rotor and the speed change of the hydraulic motor. With this hydraulic pulse device, the on-off of the hydraulic pulse is jointly controlled by the rotor, the replaceable blocking piece groove and the sealing chamber, and the waveform and on-off time of a single hydraulic pulse can be controlled by using the length change of the arc-shaped blocking piece, thus It can generate hydraulic pulse waveforms under the conditions of different injection pressure, injection displacement, and single pulse on-off time, and can conduct ground simulation tests for downhole pulse fracturing or rock breaking working environments, and can also be used for hydraulic pulse fracturing or auxiliary drill bit rock breaking Applications such as hydraulic pulse or jet flow.

Description

technical field [0001] The invention relates to a blocking hydraulic pulse generation device and method, which can provide hydraulic pulses or jets for applications such as hydraulic pulse fracturing or auxiliary drill bit rock breaking. Background technique [0002] my country is rich in shale gas resources and has great potential for development, but the geological and mining conditions are complex, and it also has the characteristics of low porosity, low permeability, natural fracture development, and high brittleness of rocks. Horizontal wells with long well sections and large displacement hydraulic fracturing are One of the main technologies and methods for the efficient and economical development of shale gas, the development cost is high. At present, the commonly used fracturing technologies are multi-stage fracturing, clean water fracturing, hydraulic jet fracturing, repeated fracturing and simultaneous fracturing. [0003] At present, shale hydraulic pulse fracturin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/26E21B7/18G01D21/00
Inventor 陆朝晖潘林华张烨邓智贺培陶洪华蒙春
Owner CHONGQING INST OF GEOLOGY & MINERAL RESOURCES
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