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

Oil-soluble hydrogen sulfide-proof corrosion inhibitor

A technology of anti-hydrogen sulfide and corrosion inhibitor, which is applied in the direction of wellbore/well components, earthwork drilling and production, etc., can solve the problems of low corrosion inhibition rate, easy failure, unsatisfactory corrosion inhibition performance, etc., to improve corrosion inhibition rate, Corrosion inhibition and good compatibility

Active Publication Date: 2013-12-18
BC P INC CHINA NAT PETROLEUM CORP +1
View PDF4 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 3. The corrosion inhibitors of the above invention are only suitable for low-temperature corrosion environments, and are prone to failure when used in high-temperature (≥120°C) corrosion environments in oil and gas wells;
[0009] 4. The above-mentioned patent documents are applied to the wellbore of oil wells. During its actual use, its corrosion inhibition performance in sulfur-containing corrosive media is not ideal, and the corrosion inhibition rate is low

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
  • Oil-soluble hydrogen sulfide-proof corrosion inhibitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Mix 20g of sorbitan monooleate (Span80), 10g of nonylphenoxyacetic acid, 5g of octyl phosphate, and 65g of 260# special kerosene solvent, and stir evenly to prepare oil-soluble corrosion inhibitor 1.

Embodiment 2

[0026] Mix 25g of sorbitan monooleate (Span80), 15g of nonylphenoxyacetic acid, 8g of octyl phosphate, and 52g of 260# special kerosene solvent, and stir evenly to prepare oil-soluble corrosion inhibitor 2.

Embodiment 3

[0028] Mix 30g of sorbitan monooleate (Span80), 20g of nonylphenoxyacetic acid, 10g of octyl phosphate, and 40g of 260# special kerosene solvent, and stir evenly to prepare oil-soluble corrosion inhibitor 3.

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 an oil-soluble hydrogen sulfide-proof corrosion inhibitor and relates to the technical field of chemical reagent formulas for the oil fields. The oil-soluble hydrogen sulfide-proof corrosion inhibitor comprises the following components by weight percent: 20-30% of sorbitan monooleate, 10%-20% of nonylphenoxy-acetic acid, 5%-10% of octyl phosphate and 40%-65% of solvent. The oil-soluble hydrogen sulfide-proof corrosion inhibitor is capable of effectively preventing the corrosion of a shaft and a gathering pipeline caused by H2S and sulfides, and has the characteristics of low dosage, low cost, no pollution on the environment and the like, and also has excellent protection effect in the produced liquid; simultaneously, the oil-soluble hydrogen sulfide-proof corrosion inhibitor has good capacity of inhibiting hydrogen embrittlement caused by H2S, and has good compatibility with the conventional chemical reagents used in the oil fields.

Description

[0001] technical field [0002] The invention relates to the technical field of chemical formulations for oilfields, and is mainly used for slowing down the corrosion of oil well bores caused by high-salinity oilfield production water containing hydrogen sulfide and sulfide. Background technique [0003] Some blocks in Changqing Oilfield have high hydrogen sulfide content. Hydrogen sulfide not only causes sudden sulfide stress cracking of metal materials, causing huge economic losses, but also causes environmental pollution due to the toxicity of hydrogen sulfide, directly threatening personal safety. Therefore, in view of the corrosion characteristics and problems of hydrogen sulfide in Changqing Oil and Gas Field, it is urgent to develop a series of high-efficiency sulfur-resistant corrosion inhibitors suitable for the current situation of Changqing Oil and Gas Field to solve the corrosion problems of oil and gas wells and gathering and transportation systems in Changqing O...

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): C09K8/54
Inventor 张新发郭亮李世勇徐军吴保玉薛斌陈怀兵
Owner BC P INC CHINA NAT PETROLEUM CORP
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