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An anti-erosion hydraulic sand blaster

A technology of hydraulic blasting and sandblasting, which is applied in the direction of mining fluid, wellbore/well parts, earthwork drilling and mining, etc., and can solve problems such as erosion of the inner wall surface of the nozzle of the hydraulic sandblasting device, so as to reduce the number of trips, reduce the Construction cost, effect of improving service life

Active Publication Date: 2018-01-02
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is the serious erosion of the inner wall near the nozzle of the hydraulic sand blaster

Method used

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  • An anti-erosion hydraulic sand blaster

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Experimental program
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Effect test

Embodiment 1

[0014] Embodiment 1: In the figure: 1. Sand blaster body; 2. Nozzle pressure cap; 3. Nozzle; 4. Internal suction guide pipe.

[0015] Such as figure 1 As shown, the anti-internal erosion hydraulic sand blaster of the present invention mainly includes a hydraulic sand blaster body 1, a nozzle 3 and an internal suction guide pipe 4, wherein the hydraulic sand blaster body 1, the nozzle 3 and the internal suction guide pipe 4. There are inter-connected medium passages. The special feature of the present invention is that the inlet end of the nozzle 3 is equipped with an internal suction guide pipe 4, which can effectively reduce the speed mutation when the sand-carrying liquid is turned, and at the same time, the sand-carrying liquid will be formed when it is turned. The eddy current is controlled in the internal suction guide pipe, thereby reducing the damage to the injector body caused by eddy current erosion during the working process of the hydraulic sandblasting machine, imp...

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Abstract

The invention discloses an internal erosion preventing hydraulic sand blaster, and belongs to the technical field of oil and gas field hydraulic sand blast fracturing. The internal erosion preventing hydraulic sand blaster comprises a hydraulic sand blaster body, nozzles and inner sucking type guide pipes, wherein the hydraulic sand blaster body, the nozzles and the inner sucking type guide pipes have medium channels communicated with each other; each inner sucking type guide pipe is mounted at an inlet end of one corresponding nozzle for effectively reducing the speed break variable of sand carrying fluid in turning and controlling an eddy current formed in the turning of the sand carrying fluid within the inner sucking type guide pipe; and a mounting part is arranged at the inlet end of each nozzle.

Description

technical field [0001] The invention relates to an anti-internal erosion hydraulic sandblasting device, which belongs to the technical field of hydraulic sandblasting and fracturing in oil and gas fields. Background technique [0002] Hydraulic sand blasting staged fracturing technology, as a new water jet application technology, has been widely used in the stimulation of horizontal wells in low permeability oil and gas fields. The key tool of this technology is the hydraulic sand blaster, which relies on the high-speed jet formed by the hydraulic sand blaster to shoot the formation into multiple channels and form several micro-cracks, and then spray continuously. The pressurization effect generated by the high-speed fluid causes the formation to crack and When fractures are formed, the sand-carrying fluid in the tubing is jet-pumped into the fractures through the hydraulic sand blaster, and the fluid is pumped into the annulus for pressure compensation, completing reservoir...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/267
CPCE21B43/267
Inventor 蒙鑫慕立俊赵粉霞邵媛冯长青任国富凌云毕曼李雪原
Owner PETROCHINA CO LTD