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Integral type hard alloy pulsed nozzle and producing technology thereof

A pulse nozzle, cemented carbide technology, applied in construction and other directions, can solve the problems of non-wearability, splitting and falling off, and weak structure of steel parts, and achieve the effects of strong corrosion resistance, simple steps, and improved work production efficiency.

Active Publication Date: 2015-12-23
自贡金成硬质合金有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This utility model adopts two-part assembly of cemented carbide and steel parts. The steel part is not wear-resistant. The welded combination leads to the accident that the two parts split and fall off due to the weak structure when the split pulse nozzle is working in the downhole nozzle.

Method used

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  • Integral type hard alloy pulsed nozzle and producing technology thereof
  • Integral type hard alloy pulsed nozzle and producing technology thereof
  • Integral type hard alloy pulsed nozzle and producing technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A one-piece carbide pulse nozzle, such as figure 1 As shown, the pulse nozzle main body 10 is included, the pulse nozzle main body 10 is a cylindrical structure, the pulse nozzle main body 10 is provided with a conical inner resonant cavity 20, the top of the inner resonant cavity 20 is provided with a nozzle outlet 30, and the inner resonant cavity The bottom of 20 is provided with diversion channel 40, inner resonant cavity 20, nozzle outlet 30, and diversion channel 40 form a hollow cavity with two large ends and a small middle, and an upper collision surface 201 is provided at the junction of inner resonant cavity 20 and nozzle outlet 30 , A lower impact surface 202 is provided at the joint between the inner resonant cavity 20 and the guide channel 40 .

[0038] The appearance shape and internal cavity structure of the pulse nozzle are relatively complex, and it is extremely difficult to produce a whole carbide pulse nozzle. In the present invention, at first will ...

Embodiment 2

[0040] The difference between this embodiment and Embodiment 1 is that the angle α between the upper impact surface and the wall of the inner resonant cavity is 60°, the angle β between the lower impact surface and the wall of the inner resonant cavity is 120°, and the upper impact surface Both the impact surface and the lower impact surface are conical structures.

Embodiment 3

[0042] The difference between this embodiment and Embodiment 1 and Embodiment 2 is that the diversion channels are conical, curved, streamlined, elliptical, arc-shaped, double-arc-shaped, and equal-speed shaped. one of the structures.

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Abstract

The invention discloses an integral type hard alloy pulsed nozzle and a producing technology thereof. The pulsed nozzle comprises a pulsed nozzle main body, wherein the pulsed nozzle main body has a cylinder structure; a cone-shaped inner resonant cavity is formed in the pulsed nozzle main body; a nozzle outlet is formed above the inner resonant cavity; a flow guiding channel is formed below the inner resonant cavity; the inner resonant cavity, the nozzle outlet and the flow guiding channel form a hollow cavity with two large ends and the small middle; an upper collision surface is arranged at a position where the inner resonant cavity is connected with the nozzle outlet; and a lower collision surface is arranged at a position where the inner resonant cavity is connected with the flow guiding channel. The producing technology comprises the following steps of burdening, compression moulding, primary sintering, rough grinding, cleaning, vacuum drying, split joint sintering and accurate grinding. The produced pulsed nozzle is good in wear resistance, high in corrosion resistance, long in working life and simple in producing technology, and can be produced in batches.

Description

technical field [0001] The invention relates to the field of hard alloy production and deep processing, in particular to an integral hard alloy pulse nozzle and a production process thereof. Background technique [0002] my country has studied pulse nozzles for more than 20 years. Generally speaking, pulse nozzles are widely used in roller cone drills and diamond drills for drilling in oil and gas fields. During the drilling process, the well cleaning fluid is sprayed intermittently. The working environment is harsh and the continuous working time is long. Therefore, the structural design of the nozzle is very demanding. [0003] The cemented carbide nozzle is assembled on the drill bit used for drilling in oil and gas fields, and the drilling fluid flows out through the inner hole of the nozzle under a certain pressure. The nozzle mainly plays the following five functions: (1) cooling the drill bit and drilling tools; (2) carrying rock debris, cleaning (3) Clean the bit con...

Claims

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Application Information

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IPC IPC(8): E21B10/61B22F7/08
Inventor 吴晓辉罗彦东李平文尹伟军何辉
Owner 自贡金成硬质合金有限公司
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