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Machining technology facilitating improvement of nozzle machining efficiency

A technology of processing efficiency and processing technology, which is applied in the processing technology field of petroleum extraction equipment to achieve the effects of being beneficial to product quality, beneficial to quality, and reducing the amount of stripping

Inactive Publication Date: 2014-10-08
CHENGDU GAOPU PETROLEUM ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The working pressure of the nozzles in the prior art is high pressure or ultra-high pressure, and the mechanical strength of the nozzle is the direct factor affecting the life of the nozzle

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A processing technology that is beneficial to the processing efficiency of a nozzle, comprising the following steps:

[0024] A) blank forging;

[0025] B) heat treatment;

[0026] C) Machining;

[0027] The step C) is located before the step B), and the step C) includes mechanical roughing and mechanical semi-finishing sequentially performed on different lathes. In the step A), the material used for the blank is 45# steel, forged The temperature range is 875°C-1025°C, and the forging heat source adopts a reverberatory furnace; the step B) includes quenching and tempering after quenching;

[0028] Also included is a mechanical finishing step D) arranged after step B).

[0029] Specifically, the process of the present invention is simple. By selecting the material of the nozzle as 45# steel, and obtaining the optimal forging temperature range through a limited number of tests for the above-mentioned materials, the process of the present invention can select a low-cost...

Embodiment 2

[0032] This embodiment is further limited on the basis of Embodiment 1. In order to improve the plasticity of the blank and reduce the deformation resistance, the step A) further includes a step of preheating the blank before forging, and the step of preheating the blank is to be at room temperature The blank is heated to 200℃-350℃.

[0033] In order to obtain sufficient hardness, wear resistance and fatigue resistance of the nozzle and reduce the degree of oxidation of the surface of the nozzle during the quenching process, the quenching temperature range in the step B) is 820°C-850°C, and the quenching adopts the rapid cooling method of oil cooling. ;

[0034] In order to eliminate the internal stress generated in the nozzle during the quenching process, reduce the brittleness of the nozzle, improve the toughness of the nozzle, and reduce the degree of oxidation of the nozzle surface during the tempering process, the fiery temperature range of the tempering is 570℃-600℃, and...

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PUM

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Abstract

The invention discloses a machining technology facilitating the improvement of nozzle machining efficiency. The technology includes the following steps that (A), a blank is forged; (B), heat treatment is performed; (C), machining is performed; (D), finish machining is performed. The step (C) is performed before the step (B), in the step (A), the blank is made of 45 # steel, the forging temperature range is 875 DEG C-1025 DEG C, a reverberating furnace is adopted as a forging heat source, the step (B) includes quenching and tempering after quenching, and the step (D) is performed after the step (B). The technology is simple, material low in cost and convenient to obtain is selected, and a nozzle meeting the strength requirement can be obtained through the reasonable technology. Compared with the prior art, the technology is low in machining difficulty and beneficial to improving production efficiency of the nozzle and reducing production cost of the nozzle.

Description

technical field [0001] The present invention relates to a processing technology of oil exploitation equipment, in particular to a processing technology which is beneficial to the processing efficiency of nozzles. Background technique [0002] The emergence of jet drilling technology in the late 1940s was a revolution in drilling technology, which brought the drilling speed to a higher level. In 1949, the United States first tried small nozzles on the drill bit body. In 1955, the nozzle combination system was used in the design of the drill bit. Since then, the hydraulics of the nozzle type drill bit came into being. People realized that the hydraulic parameters of the drill bit are the main factors affecting the ROP: 1973 In 2008, Exxon Company of the United States found that when the pressure drop of the nozzle was 104MPa, the continuous jet could impact and break 70%-80% of the drilled rock, and the ROP increased by 2-3 times; The ROP of the channel string ultra-high pres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
CPCB23P15/16
Inventor 周斌
Owner CHENGDU GAOPU PETROLEUM ENG TECH
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