Super-strength aluminum alloy drill rod pipe body for super-deep well and manufacturing method for super-strength aluminum alloy drill rod pipe body

An ultra-high-strength, aluminum alloy technology, which is applied to the ultra-high-strength aluminum alloy drill pipe body and its manufacturing field for ultra-deep wells, can solve the problem of affecting the service safety of aluminum alloy drill pipes and widely popularized and used, and the mechanical properties of the alloy at room temperature are reduced. , the high price of alloying elements, etc., to achieve the effect of low cost, elimination of internal segregation of the matrix, and improvement of high temperature mechanical properties

Active Publication Date: 2015-03-11
BC P INC CHINA NAT PETROLEUM CORP +1
View PDF5 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The 7000 series alloy is the strongest and toughest alloy among the aluminum alloys produced by the traditional ingot metallurgy method, but it can only be used in an environment below 100°C, and cannot meet the requirements for use in an environment of 120°C required by ultra-deep wells
However, while the heat-resistant phase is formed by the above method to improve the mechanical properties at high temperature, the mechanical properties of the alloy at room temperature are reduced. In addition, the alloy elements are expensive, and require solid solution and long-term aging treatment. The process is complicated and the delivery cycle is long, which affects the aluminum alloy. Service Safety and Widespread Use of Drill Pipes

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
  • Super-strength aluminum alloy drill rod pipe body for super-deep well and manufacturing method for super-strength aluminum alloy drill rod pipe body
  • Super-strength aluminum alloy drill rod pipe body for super-deep well and manufacturing method for super-strength aluminum alloy drill rod pipe body
  • Super-strength aluminum alloy drill rod pipe body for super-deep well and manufacturing method for super-strength aluminum alloy drill rod pipe body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] An ultra-high-strength aluminum alloy drill pipe body for ultra-deep wells. In terms of weight percentage, the composition of the aluminum alloy drill pipe body for ultra-deep wells includes: Cu2.9%, Mg2.8%, Zn10.0%, Mn0. 3%, Fe0.3%, Ni0.5%, Cr0.5%, Ti0.20%, Zr0.2%B0.001%, Yb0.02%, the balance is Al and unavoidable impurities.

[0034] A method for manufacturing an ultra-high-strength aluminum alloy drill pipe body for ultra-deep wells. The above-mentioned raw materials are smelted and cast to obtain a tube blank, and the tube blank is homogenized at 380°C×8h+420°C×12h+460°C×32h, 435 ℃ extrusion deformation, solution quenching treatment at 455℃×2h+470℃×1h, artificial aging treatment for 36h after pre-stretching deformation 4.0%.

[0035] The mechanical properties of the aluminum alloy drill pipe body manufactured by the above method reach: the tensile strength is 735MPa, the yield strength is 704MPa, and the elongation is 8.5%; after 500 hours of heat exposure at 120°C,...

Embodiment 2

[0037] The invention provides an ultra-high-strength aluminum alloy drill pipe body for ultra-deep wells. The composition of the aluminum alloy drill pipe body for ultra-deep wells includes Cu2.1%, Mg2.8%, Zn10.9%. Mn0.3%, Fe0.3%, Ni0.3%, Cr0.5%, Ti0.20%, Zr0.2%B0.001%, Yb0.02%, the balance is Al and unavoidable impurities.

[0038] A method for manufacturing an ultra-high-strength aluminum alloy drill pipe body for ultra-deep wells. The above-mentioned raw materials are smelted and cast to obtain a tube blank, and the above-mentioned tube blank is homogenized at 380°C×8h+420°C×12h+460°C×32h, Extrusion deformation at 440°C, solution quenching treatment at 455°C×2h+470°C×1h, artificial aging treatment for 12h after pre-stretching deformation 4.0%.

[0039] The mechanical properties of the aluminum alloy drill pipe body manufactured by the above method reach: the tensile strength is 713MPa, the yield strength is 675MPa, and the elongation is 8.0%; after 500 hours of heat exposur...

Embodiment 3

[0041]An ultra-high-strength aluminum alloy drill pipe body for ultra-deep wells. In terms of weight percentage, the composition of the aluminum alloy drill pipe body for ultra-deep wells includes: Cu2.3%, Mg3.1%, Zn11.9%, Mn0. 3%, Fe0.3%, Ni0.3%, Cr0.5%, Ti0.20%, Zr0.2%B0.001%, Yb0.05%, the balance is Al and unavoidable impurities.

[0042] A method for manufacturing an ultra-high-strength aluminum alloy drill pipe body for ultra-deep wells. The above-mentioned raw materials are smelted and cast to obtain a tube blank, and the above-mentioned tube blank is homogenized at 380°C×8h+420°C×12h+460°C×32h, Extrusion deformation at 440°C, solution quenching treatment at 455°C×2h+470°C×1h, artificial aging treatment for 48h after pre-stretching deformation 4.0%.

[0043] The mechanical properties of the aluminum alloy manufactured by the above method reach: the tensile strength is 740MPa, the yield strength is 719MPa, and the elongation is 8.5%. 709MPa, elongation 7.0%. Its perform...

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
yield strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
yield strengthaaaaaaaaaa
Login to view more

Abstract

The invention discloses a super-strength aluminum alloy drill rod pipe body for a super-deep well and a manufacturing method for the super-strength aluminum alloy drill rod pipe body. The super-strength aluminum alloy drill rod pipe body comprises the following components in percentage by weight: 2.1 to 3.0 percent of Cu, 2.8 to 3.1 percent of Mg, 10.0 to 12.9 percent of Zn, 0.1 to 0.3 percent of Mn, 0.1 to 0.5 percent of Ni, 0.1 to 0.5 percent of Cr, 0.05 to 0.20 percent of Ti, 0.2 to 0.5 percent of Zr, 0.001 to 0.01 percent of B, 0.02 to 0.05 percent of Yb and the balance of Al and inevitable impurities. According to the super-strength aluminum alloy drill rod pipe body and the manufacturing method, heat treatment processes of multistage homogenization treatment, multistage solid solution treatment, aging and the like are adopted, segregation, heterogeneousness and the like in a substrate are greatly eliminated, and the melting-back of an un-melted eutectic phase in the aluminum alloy substrate is remarkably promoted, so that high strength is maintained, hot strength is improved, and the problems of insufficient strength, low surface hardness, insufficient hot strength and the like of the conventional aluminum alloy drill rod pipe body are solved.

Description

technical field [0001] The invention relates to the technical field of oil pipe manufacturing, in particular to an ultra-high-strength aluminum alloy drill pipe body for ultra-deep wells and a manufacturing method thereof. Background technique [0002] With the development of the petroleum industry, the number of ultra-deep wells and horizontal wells continues to increase, making exploration and development more difficult. Compared with existing steel drill pipes, aluminum alloy drill pipes have the advantages of light weight, good toughness, hydrogen sulfide corrosion resistance, fatigue resistance, etc., and have broad application prospects. [0003] For the aluminum alloy drill pipe body, due to the specific service conditions of ultra-deep wells, the upper bearing drill string is required to have extremely high strength and certain heat resistance. The 7000 series alloy is the strongest and toughest alloy among aluminum alloys produced by traditional ingot metallurgy, b...

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): C22C21/10B22D11/00C22F1/053
CPCC22C21/10C22F1/053
Inventor 冯春宋生印冯耀荣刘永刚
Owner BC P INC CHINA NAT PETROLEUM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap