High-strength expansive agent used for oil-well cement

An oil well cement and high-strength technology, which is applied in the field of expansion agent, can solve the problems that the performance of cement can not meet the actual use needs, the strength of oil well cement is not high, and the performance does not meet the actual use needs, etc., and achieves high strength and high temperature stability. , Good anti-penetration effect

Inactive Publication Date: 2017-09-22
四川宏升石油技术开发有限责任公司
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the performance of the existing cement cannot meet the actual use needs, and there is an urgent need for an expansion agent to make the oil well cement have high strength, good stability, impermeability, corrosion resistance, etc. The purpose is to provide a high-strength expansion agent for oil well cement, and solve the problems that the strength of oil well cement is not high and other properties do not meet the needs of actual use

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The high-strength expansion agent used for oil well cement of the present invention includes the following components in parts by weight: 40 parts of sulfonyl hydrazide compounds, 26 parts of magnesium oxide, 23 parts of butadiene-styrene, 21 parts of slag, 12 parts of graphite powder, 7 parts of calcium silicate, 2 parts of styrene-butadiene rubber emulsion, 8 parts of cement waterproofing agent, and 17 parts of calcium oxide. The sulfonylhydrazide compound is one or more of benzenesulfonylhydrazide, benzenesulfonylhydrazide, and 3,3-disulfonylhydrazide diphenylsulfone. The slag is the slag mainly composed of aluminosilicate material in the steelmaking blast furnace, and its activity is more than 80%. The graphite powder is flake graphite powder.

[0024] After the expansion agent prepared in Example 1 is evenly mixed with cement, nitrogen gas will be released when the temperature reaches 35°C under alkaline conditions, and the tiny bubbles can be evenly distributed i...

Embodiment 2

[0026] The high-strength expansion agent used for oil well cement of the present invention comprises the following components in parts by weight: 25 parts of sulfonyl hydrazide compounds, 10 parts of magnesium oxide, 5 parts of butadiene-styrene, 2 parts of slag, 1 part of graphite powder, 2 parts of calcium silicate, 0.4 part of styrene-butadiene rubber emulsion, 2 parts of cement waterproofing agent, 7 parts of calcium oxide. The sulfonylhydrazide compound is one or more of benzenesulfonylhydrazide, benzenesulfonylhydrazide, and 3,3-disulfonylhydrazide diphenylsulfone. The slag is the slag mainly composed of aluminosilicate material in the steelmaking blast furnace, and its activity is more than 80%. The graphite powder is flake graphite powder.

[0027] The value range of the components of the expansion agent prepared in Example 2 is outside the value range of the present invention, and it and the prepared expansion agent begin to release nitrogen when the temperature reac...

Embodiment 3

[0029] The high-strength expansion agent used for oil well cement of the present invention includes the following components in parts by weight: 55 parts of sulfonyl hydrazide compounds, 35 parts of magnesium oxide, 38 parts of butadiene-styrene, 36 parts of slag, 28 parts of graphite powder, 24 parts of calcium silicate, 12 parts of styrene-butadiene rubber emulsion, 19 parts of cement waterproofing agent, 37 parts of calcium oxide. The sulfonylhydrazide compound is one or more of benzenesulfonylhydrazide, benzenesulfonylhydrazide, and 3,3-disulfonylhydrazide diphenylsulfone. The slag is the slag mainly composed of aluminosilicate material in the steelmaking blast furnace, and its activity is more than 80%. The graphite powder is flake graphite powder.

[0030] The value range of the components of the expansion agent prepared in Example 3 is outside the value range of the present invention, and it and the prepared expansion agent begin to release nitrogen when the temperatur...

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 high-strength expansive agent used for oil-well cement. The expansive agent is prepared from the following ingredients in parts by weight: 30-45 parts of a sulfonyl hydrazide compound, 18-29 parts of magnesium oxide, 20-25 parts of butadiene-styrene, 18-25 parts of slag with latent hydraulic activity, 8-15 parts of graphite powder, 5-10 parts of calcium silicate, 1-3 parts of butadiene styrene rubber emulsion, 5-10 parts of a cement waterproofing agent and 15-19 parts of calcium oxide.

Description

technical field [0001] The invention relates to the field of cement, in particular to a high-strength expansion agent for oil well cement. Background technique [0002] The high water loss and volume shrinkage in the cement hydration process of oil wells are the main reasons for the poor bonding quality of the cement annulus interface, the channeling of oil, gas and water in the well, and the pollution of the oil layer. This is also a cementing technology that has not yet been well resolved. problem. The volume shrinkage after solidification causes problems in the bonding between the cement sheath and the formation and the casing, forming micro-gap, which not only affects the cementing quality but also causes a large loss of oil and gas resources. [0003] In recent years, cementing engineers have carried out a lot of research on this, and put forward the problem of how to compensate the volume space and prevent the generation of micro-annulus. Methods such as: inflation m...

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): C04B24/26C09K8/467
CPCC04B40/0039C09K8/467C04B24/16C04B22/066C04B24/00C04B18/141C04B14/024C04B22/00C04B24/26C04B2103/65C04B22/064
Inventor 徐峰
Owner 四川宏升石油技术开发有限责任公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap