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Novel corrosion inhibitor for various acids

A corrosion inhibitor and inhibitor technology, applied in drilling composition, wellbore/well components, earthwork drilling and production, etc., can solve problems such as chromium and steel corrosion, exposed formation/fluid compatibility, etc., and achieve superior performance Effect

Inactive Publication Date: 2021-02-19
FLUID ENERGY GRP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0024] The corrosion inhibitor compositions of the present invention, particularly phosphoric acid and its related applications, are applicable in the oil and gas industry as well as in other industries aimed at addressing chromium and steel corrosion, logistics / handling, human / environmental exposure, and formation / fluid compatibility sexual issues

Method used

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  • Novel corrosion inhibitor for various acids
  • Novel corrosion inhibitor for various acids
  • Novel corrosion inhibitor for various acids

Examples

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Effect test

Embodiment 1

[0066] Example 1 - Method of Preparing Acid Compositions for Use with Corrosion Inhibitors According to a Preferred Embodiment of the Invention Start with 50% by weight urea in water. An 85% by weight solution of orthophosphoric acid was added and circulated until all reactions had completely ceased. Immediately add water to 50% of the desired concentration.

[0067] Table 1 lists the components of the acid composition of Example 1 comprising the corrosion inhibitor of the present invention, including their weight percents relative to the total weight of the composition and the CAS number of each component.

[0068] Table 1 - Formulation of Example 1

[0069] chemicals % weight percentage CAS# water 43.95％ 7732-18-5 Urea phosphate 56％ 4861-19-2

[0070] The resulting composition of Example 1 was a clear, odorless liquid with a shelf life of greater than 1 year. Its freezing point temperature is about -30°C, its boiling point temperature is a...

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PUM

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Abstract

A liquid corrosion inhibitor composition for use with acid compositions for use in industrial activities, said corrosion inhibitor composition comprising: a thiourea derivative; a first type of amphoteric surfactant is selected from the group consisting of: a sultaine surfactant; a betaine surfactant; and combinations thereof; a second type of amphoteric surfactant; and a solvent.

Description

technical field [0001] The present invention relates to a novel corrosion inhibitor composition for use with acids for various operations in the oil and gas industry or other industrial applications, more particularly to corrosion inhibitor compositions for use with phosphoric acid compositions , where acid-sensitive components are present. Background technique [0002] The purpose of acid scaling is to open holes to clean downhole pumps, auxiliary equipment and piping to stimulate the flow of hydrocarbons. Often, service equipment is required to pull all downhole equipment out of the well prior to acid treatment due to incompatibility with chrome or chrome-plated rotors or other acid-sensitive downhole equipment. Having a product that can be used for descaling equipment that is high temperature and left downhole for long periods of time is very advantageous, eliminating the need for costly reconditioning of the well. [0003] These major challenges faced in some of the ap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F11/04C09K8/528C09K8/54C09K8/74C23G1/06
CPCC09K8/74C23F11/04C09K8/54C09K8/528C23F11/167C09K2208/32C09K8/035C09K8/52C23F11/145C23F11/162
Inventor 克莱珀迪马库斯维森贝格
Owner FLUID ENERGY GRP LTD