Unlock instant, AI-driven research and patent intelligence for your innovation.

Method of manufacturing unsn08028 oil casing

A technology for oil casing and tube blank, which is used in the field of manufacturing UNSN08028 oil casing, can solve the problems of oil and gas well corrosion, stainless steel can not meet the requirements, etc., and achieve the effect of excellent strength characteristics

Active Publication Date: 2016-04-20
PANGANG GROUP JIANGYOU CHANGCHENG SPECIAL STEEL
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This leads to serious corrosion problems in oil and gas wells
Therefore, ordinary carbon steel, low alloy steel and even stainless steel such as 13Cr and 22Cr can no longer meet the requirements.

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
  • Method of manufacturing unsn08028 oil casing
  • Method of manufacturing unsn08028 oil casing
  • Method of manufacturing unsn08028 oil casing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Use the S325 bar peeling machine to peel the round tube blank with a diameter of 320mm used to prepare the UNSN08028 oil casing to a diameter of 305mm, so as to ensure that the surface finish of the peeled round tube blank is better than Ra1.0. The circular tube blank was cut into four-section tube blanks with a length of 850 mm using a metal circular saw, wherein the UNSN08028 oil casing pipes made of four-section tube blanks corresponded to Examples 1-4 in Table 1, respectively.

[0036] Preheat the peeled tube blank to 900-950°C in a 12m ring furnace. Use a power frequency induction furnace to heat the preheated tube blank to 1180-1200°C. A 10MN vertical hydraulic reaming machine was used to ream the heat-treated tube blank to obtain a capillary tube with a diameter of 311 mm and a wall thickness of 76.5 mm.

[0037] Use a power frequency heating furnace to heat the expanded capillary to 1210-1250°C. A 31.50 MN horizontal hydraulic extrusion machine was used for ho...

Embodiment 2

[0047] Basically the same steps as in Example 1 were used to prepare the oil casing. The difference is: prepare six sections of tube blanks (respectively corresponding to Examples 5-10 in Table 3); in the hot extrusion step, a capillary tube with a diameter of 219mm and a wall thickness of 32mm is obtained; in the cold expansion step, A capillary tube with a diameter of 245 mm and a wall thickness of 32 mm was obtained; the cold forging process was directly performed without the cold rolling process in Example 1.

[0048] Table 3 shows the detection results of the oil casing pipes of Examples 5-10 in this embodiment.

[0049] table 3

[0050]

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

No PUM Login to View More

Abstract

The invention discloses a method for fabricating a UNSN08028 oil sleeve. According to the method, a pipe blank is sequentially subjected to hot piercing, hot extrusion, hot pipe expanding, solid solution and cold forging. The UNSN08028 fabricated through the method has excellent strength characteristic.

Description

technical field [0001] The invention relates to a method for manufacturing UNSN08028 oil casing. Background technique [0002] Most oil and gas resources contain CO 2 and H 2 S. Among them, part of the well gas contains only CO 2 or H only 2 S, more oil well gas also contains CO 2 and H 2 S. This leads to serious corrosion problems in oil and gas wells. Therefore, ordinary carbon steel, low alloy steel and even stainless steel such as 13Cr and 22Cr cannot meet the requirements. [0003] UNSN08028 iron-nickel-based alloy has excellent strength and corrosion resistance, which can meet the special requirements of high acid oil and gas field exploitation. The main components (mass percentage) of UNSN08028 iron-nickel-based alloy are shown in Table 1. [0004] Table 1 [0005] Contents of the invention [0006] The purpose of the present invention is to provide a new method for manufacturing UNSN08028 oil casing. [0007] In the method for manufacturing UNSN08028...

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 Patents(China)
IPC IPC(8): B23P15/00
CPCB23P15/00E21B17/00
Inventor 严波谢元林张健方轶谢炜余多贤陈杰粟硕韩福
Owner PANGANG GROUP JIANGYOU CHANGCHENG SPECIAL STEEL