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

High-temperature oxygen corrosion resistant stainless steel, high-temperature oxygen corrosion resistant stainless steel casing pipe and manufacturing method of high-temperature oxygen corrosion resistant stainless steel casing pipe

A manufacturing method and oxygen corrosion technology, applied in the field of casing and its manufacturing, stainless steel, can solve the problem of not meeting the requirements of 500 ℃ fire flooding corrosion resistance and mechanical properties, etc.

Active Publication Date: 2019-03-05
BAOSHAN IRON & STEEL CO LTD
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the technical solution disclosed in this patent document, its strength can meet the casing strength requirements for steam flooding at 350°C for heavy oil production, but it cannot meet the requirements for corrosion resistance and mechanical properties for fire flooding at 500°C

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
  • High-temperature oxygen corrosion resistant stainless steel, high-temperature oxygen corrosion resistant stainless steel casing pipe and manufacturing method of high-temperature oxygen corrosion resistant stainless steel casing pipe
  • High-temperature oxygen corrosion resistant stainless steel, high-temperature oxygen corrosion resistant stainless steel casing pipe and manufacturing method of high-temperature oxygen corrosion resistant stainless steel casing pipe
  • High-temperature oxygen corrosion resistant stainless steel, high-temperature oxygen corrosion resistant stainless steel casing pipe and manufacturing method of high-temperature oxygen corrosion resistant stainless steel casing pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-17 and comparative example 1-7

[0043] Table 1 lists the mass percentage of each chemical element in the high temperature oxygen corrosion resistant stainless steel of Examples 1-17 and the comparative steel of Comparative Examples 1-3.

[0044] Table 1. (wt%, the balance is Fe and other unavoidable impurity elements except P and S)

[0045]

[0046]

[0047] Note: The value of formula (1) in the table refers to the value calculated by (Cr+1 / 2W):(Ni+5C), where Cr, W, Ni, and C are the mass percentage content of each element.

[0048] The high temperature oxygen corrosion resistant stainless steel of Examples 1-17 and the comparison steel of Comparative Examples 1-7 are smelted, casted, rolled, rolled, sized, tempered, and the process parameters involved in the sizing step and the tempered step Listed in Table 2.

[0049] In the sizing step, control the final rolling temperature at 900-980°C, and then perform rapid cooling at a cooling rate of 15-40°C / s, control the final cooling temperature of rapid c...

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
Shockaaaaaaaaaa
Login to View More

Abstract

The invention discloses high-temperature oxygen corrosion resistant stainless steel. The high-temperature oxygen corrosion resistant stainless steel is prepared from the following chemical elements inpercentage by mass: 0.04-0.10% of C, 0.1-0.5% of Si, 0.20-1.0% of Mn, 11.0-14.0% of Cr, 2.0-5.0% of Ni, no more than 0.02% of N, 0.2-1.0% of W, 0.03-0.1% of V, 0.01-0.04% of Al, and the balance of Feand other unavoidable impurities. The high-temperature oxygen corrosion resistant stainless steel is provided with a single tempering martensite structure, the surface of the high-temperature oxygencorrosion resistant stainless steel is provided with a passivation film, and the passivation film contains Cr and Ni. The invention further discloses a high-temperature oxygen corrosion resistant stainless steel casing pipe. The yield strength of the high-temperature oxygen corrosion resistant stainless steel casing pipe is the 90-110 ksi steel grade, the impact toughness of the high-temperature oxygen corrosion resistant stainless steel casing pipe is greater than or equal to 80 J, and the high-temperature oxygen corrosion resistant stainless steel casing pipe resists corrosion of co-existence of O2 and CO2 under the environment of 500 DEG C or above.

Description

technical field [0001] The invention relates to a stainless steel, a casing and a manufacturing method thereof, in particular to a high-temperature-resistant stainless steel, a casing and a manufacturing method thereof. Background technique [0002] Viscose oil is a relatively viscous oil. Because of its high viscosity, high density, and high flow resistance, it is difficult to flow into the wellbore from the oil layer, or lift from the wellbore to the ground. For the heavy oil in the oil layer, the thermal extraction method is adopted. In order to improve the recovery rate, a technology of burning the oil layer has been developed in recent years. The principle is to inject air, oxygen or oxygen-enriched gas into the downhole, and rely on spontaneous combustion or use the downhole ignition device to ignite Combustion makes it react with organic fuel (crude oil) in the oil reservoir, and unburned heavy oil is exploited with the help of the generated heat. The application of...

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
IPC IPC(8): C22C38/02C22C38/04C22C38/44C22C38/46C22C38/06C21D1/25C21D8/10C21D9/08
CPCC21D1/25C21D8/105C21D9/085C21D2211/008C22C38/001C22C38/02C22C38/04C22C38/06C22C38/44C22C38/46
Inventor 张春霞齐亚猛张忠铧蔡海燕
Owner BAOSHAN IRON & STEEL CO LTD
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

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com