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

A corrosion-resistant sucker rod and its manufacturing method

A sucker rod, corrosion-resistant technology, applied in the direction of drill pipe, earthwork drilling, drilling equipment, etc., can solve the problems of not being suitable for large-scale use, high price, etc., and achieve low production cost, high output-input ratio, durable Effect of improving corrosion performance and fatigue resistance

Active Publication Date: 2017-09-12
DONGYING XIANHENG IND & TRADE +2
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, imported products are not suitable for large-scale use due to their high price

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
  • A corrosion-resistant sucker rod and its manufacturing method
  • A corrosion-resistant sucker rod and its manufacturing method
  • A corrosion-resistant sucker rod and its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] A corrosion-resistant sucker rod of the present invention comprises a rod body; in terms of mass percentage, the material composition of the rod body is: C 0.15%-0.25%; Cr 0.5%-1.0%; Mo 0.1%-0.2%; Si 1.0 %~1.5%; Mn 1.5%~2.5%; Cu 0.05%~0.2%; Ti 0.05%~0.15%; Nb 0.2%~0.4%; rare earth 0.1%~0.15%; Ce mixture.

[0019] Determination of part element content in a kind of corrosion-resistant sucker rod of the present invention is as follows:

[0020] C: It is generally believed that the carbon content of 0.08% to 0.4% has no obvious effect on the hydrogen sulfide corrosion cracking susceptibility of steel. Carbon is the main element to improve the strength of steel. To ensure a certain strength, a certain carbon content is necessary, but carbon is not good for plasticity, and at the same time, a carbon content greater than 0.3% is not good for welding. Controlling the carbon content of 0.15% to 0.25% can ensure sufficient strength, and at the same time make the steel have good...

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
tensile strengthaaaaaaaaaa
lengthaaaaaaaaaa
reduction of areaaaaaaaaaaa
Login to View More

Abstract

The invention discloses a corrosion-resistant sucker rod and a manufacturing method thereof and relates to a sucker rod used in oil extraction machinery in an oil field as well as a method for manufacturing the sucker rod. The invention aims to provide a sucker rod which is relatively low in production cost and has relatively high fatigue resistance and corrosion resistance. The sucker rod can be well applied to an oil well containing corrosive media of H2S, CO2 and Cl<->. According to the technical problem to be solved, the invention provides a method for manufacturing the sucker rod. The corrosion-resistant sucker rod disclosed by the invention comprises a rod body, wherein the rod body comprises the following material components in percentage by mass: 0.15-0.25 percent of C, 0.5-1.0 percent of Cr, 0.1-0.2 percent of Mo, 1.0-1.5 percent of Si, 1.5-2.5 percent of Mn, 0.05-0.2 percent of Cu, 0.05-0.15 percent of Ti, 0.2-0.4 percent of Nb, 0.1-0.15 percent of rare earth and the balance of Fe. The corrosion-resistant sucker rod disclosed by the invention is manufactured by adopting an existing sucker rod method and equipment.

Description

technical field [0001] The invention relates to a sucker rod used in oil field production machinery and a manufacturing method of the sucker rod. Background technique [0002] The sucker rod is an important part used to connect the surface pumping unit and downhole pumping in the oil production system of the oil field, and it is one of the important consumable materials in the oil extraction activities. In the process of oil production, the load on the sucker rod includes the weight of the sucker rod string, the weight of the liquid column, the inertial load of the sucker rod string and the liquid, the frictional resistance of the sucker rod string in motion, and the weight of the sucker rod string. Shock loads due to elasticity and shock loads due to inconsistent movement of the liquid and the plunger, etc. The above six kinds of loads change cyclically during the up-and-down reciprocating motion of the sucker rod, so the sucker rod bears an asymmetrical cyclic load. The ...

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): C22C38/38C22C38/28C21D8/06
CPCC21D8/065C22C38/005C22C38/02C22C38/04C22C38/12C22C38/14C22C38/16C22C38/18E21B17/00
Inventor 赵磊毕伟余传谋李明付小波高文明刘斌刘涛吴振宁
Owner DONGYING XIANHENG IND & TRADE
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