Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Perforating charge body powder metallurgy billet and cold extrusion forming process method

A technology of powder metallurgy and perforating bullets, which is applied in the fields of mining fluids, earthwork drilling, wellbore/well components, etc. It can solve the problems of limited selection of projectile materials, increased salvage operation costs, and unstable perforation penetration. Achieve low cost, improve perforating operation efficiency, and fine fragments

Active Publication Date: 2013-09-11
HEILONGJIANG SERVICE CENT FOR SMALL & MEDIUM SIZED ENTERPRISES
View PDF3 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the complex structure of the projectile body, high machining cost and low production efficiency, it cannot meet the actual production needs. Although the use of cold extrusion technology improves production efficiency and relatively reduces production costs, the choice of projectile material is greatly restricted. Currently only 20 # Steel is manufactured by cold extrusion, while 20 # The mechanical properties of the steel projectile are low, the perforation penetration is unstable, and the size of the fragments after the projectile explodes is large, which is prone to well jamming accidents and increases the cost of salvage operations

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Perforating charge body powder metallurgy billet and cold extrusion forming process method
  • Perforating charge body powder metallurgy billet and cold extrusion forming process method
  • Perforating charge body powder metallurgy billet and cold extrusion forming process method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0009] The present invention will be described in detail below with examples.

[0010] Weigh 6 kg of copper powder, 6 kg of nickel powder, 5 kg of graphite powder, 6 kg of molybdenum powder, 7 kg of binder, and 970 kg of iron powder. 0.6%, 0.5%, 0.6%, 0.7% and 97%. The particle size of iron powder is less than 200 mesh, and the particle size of copper powder, nickel powder, graphite powder, molybdenum powder and binder is less than 300 mesh. When processing, put the prepared powder into the mixer and mix at 60 rpm for 1 hour to prepare a mixed powder; weigh the mixed powder according to the weight of the projectile, press it into a mold, and sinter it to make a projectile blank. , the pressing pressure is 600-800MPa, and the blank pressing density is 7.1-7.2g / cm 3 , the sintering temperature is 1000-1100 ℃, and the temperature is kept for 1-2 hours; the sintered projectile blank is subjected to cold extrusion deformation to increase the density, and the final shape of the pr...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
densityaaaaaaaaaa
densityaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to a perforating charge body powder metallurgy billet and a cold extrusion forming process method, and belongs to petroleum exploitation tools. The billet is formed through compatibility of iron powder, copper powder, nickel powder, graphite powder, molybdenum powder and a binder according to different weight ratios, mechanical mixing, pressing and sintering are performed on the raw materials to prepare a charge body billet, cold extrusion is adopted to carry out extrusion on the whole charge body billet to obtain a charge body with the final shape, and sintering and precise pressing shaping are performed to obtain the perforating charge body. According to the present invention, the low alloy content powder metallurgy formula and the cold extrusion technology are adopted to process the charge body, and the following characteristics are provided, wherein the characteristics are that the material formula is novel, scientific and reasonable property is provided, mechanical property of the charge body is good, a penetration depth value of the perforation is large, use is safe and reliable, the production process is simple, the cost is low, perforating operation efficiency is increased, and petroleum exploitation cost is reduced.

Description

technical field [0001] The invention belongs to an oil exploitation tool, and mainly relates to a downhole perforating projectile material and a projectile forming processing method for oilfield exploitation. Background technique [0002] Oilfield perforating charge is a kind of downhole perforating tool used to improve oilfield production efficiency. The projectile is the key component of the perforating charge. Its main function is to enhance the lateral detonation wave impulse of the perforating charge, increase the kinetic energy of the metal jet, delay and reduce the interference of the sparse wave on the metal jet, and ensure the perforation depth. Practice shows that the higher the projectile strength is, the greater the penetration depth of the perforating charge is. Therefore, increasing the projectile strength is one of the effective ways to improve the penetration depth of the perforating charge. The traditional projectile processing methods mainly include mechan...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/16B22F3/16E21B43/116
Inventor 戴建东李大勇李峰周大伟
Owner HEILONGJIANG SERVICE CENT FOR SMALL & MEDIUM SIZED ENTERPRISES
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products