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Non-dispersible high-temperature-resistant cement-based consolidation material in underground water environment and preparation method thereof

A technology of high temperature resistant cement and consolidation material, applied in the field of grouting materials, can solve problems such as inconvenient application, and achieve the effects of restraining shrinkage, low production cost and good compressive performance

Active Publication Date: 2022-01-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if this cementing material wants to exert excellent performance, it needs to continuously optimize the ratio of each raw material according to the change of ambient temperature, which is not convenient for its application in oil well production.

Method used

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  • Non-dispersible high-temperature-resistant cement-based consolidation material in underground water environment and preparation method thereof
  • Non-dispersible high-temperature-resistant cement-based consolidation material in underground water environment and preparation method thereof
  • Non-dispersible high-temperature-resistant cement-based consolidation material in underground water environment and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The non-dispersible high-temperature-resistant cement-based consolidation material for downhole water environment is formed by mixing water and non-dispersible high-temperature-resistant cement-based consolidation powder at a weight ratio of 1:1.0. The non-dispersible high-temperature-resistant cement-based consolidation powder is composed of the following raw materials and their weight percentages: 75% of cementitious material, 8% of suspending agent, 10% of expansion agent, 1% of high-temperature resistant agent, 2.5% of water-retaining agent, and 2.0% of dispersant %, retarder 1.5%.

[0036] The cementitious material is composed of cement, slag fine powder, fly ash and silica fume in a weight ratio of 2:2:2:1.

[0037] The high temperature resistant agent is composed of aluminum hydroxide fine powder, polyethyleneimine and lignosulfonate in a weight ratio of 5:1:0.2.

[0038] The suspending agent is sodium bentonite, the expansion agent is MgO expansion agent, the w...

Embodiment 2

[0042] The non-dispersible high-temperature-resistant cement-based consolidation material for downhole water environment is formed by mixing water and non-dispersible high-temperature-resistant cement-based consolidation powder at a weight ratio of 1:0.5. The non-dispersible high-temperature-resistant cement-based consolidation powder is composed of the following raw materials and their weight percentages: 80% of cementitious material, 8% of suspending agent, 4.5% of expansion agent, 3% of high-temperature resistant agent, 2% of water-retaining agent, and 1.5% of dispersant %, retarder 1%.

[0043] The cementitious material is composed of cement, slag fine powder, fly ash and silica fume in a weight ratio of 5:2:2:1.

[0044] The high temperature resistant agent is composed of aluminum hydroxide fine powder, polyethyleneimine and lignosulfonate in a weight ratio of 5:1:0.5.

[0045] The suspending agent is sodium bentonite, the expansion agent is MgO expansion agent, the water ...

Embodiment 3

[0048] The non-dispersible high-temperature-resistant cement-based consolidation material for downhole water environment is formed by mixing water and non-dispersible high-temperature-resistant cement-based consolidation powder at a weight ratio of 1:0.8. The non-dispersible high-temperature-resistant cement-based consolidation powder is composed of the following raw materials and their weight percentages: 90% of cementitious material, 4.65% of suspending agent, 3% of expansion agent, 1% of high-temperature resistant agent, 1% of water-retaining agent, and 0.3% of dispersant %, retarder 0.05%.

[0049] The cementitious material is composed of cement, slag fine powder, fly ash and silica fume in a weight ratio of 5:2:2:1.

[0050] The high temperature resistant agent is composed of aluminum hydroxide fine powder, polyethyleneimine and lignosulfonate in a weight ratio of 5:1:0.2.

[0051] The suspending agent is sodium bentonite, the expansion agent is MgO expansion agent, the ...

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Abstract

The invention belongs to the technical field of grouting materials, and particularly relates to a non-dispersible high-temperature-resistant cement-based consolidation material in an underground water environment and a preparation method thereof. The non-dispersible high-temperature-resistant cement-based consolidation powder is prepared from the following raw materials in percentage by weight: 75%-95% of a cementing material, 0%-8% of a suspending agent, 1%-10% of an expanding agent, 0%-3% of a high-temperature-resistant agent, 1.0%-2.5% of a water-retaining agent, 0.3%-2.0% of a dispersing agent and 0.05%-2.0% of a retarder. The cementing material is prepared from cement, superfine slag powder, fly ash and silica fume in a weight ratio of (2-10): 2: 2: 1. After the cement-based consolidation material is mixed with water, slurry is good in self-fluidity, free of bleeding and layering and good in high temperature resistance, the volume of the slurry is not shrunk after the slurry is condensed, and the whole pores or rock gaps can be effectively filled in grouting plugging at a high water flow rate.

Description

technical field [0001] The invention belongs to the technical field of grouting materials, and in particular relates to a cement-based consolidation material that does not disperse in an underground water environment and is resistant to high temperatures and a preparation method thereof. Background technique [0002] In the current bridges, tunnels, water conservancy construction, and oilfield construction under construction, water environment construction is becoming more and more common. Cement-based materials are still indispensable materials in these water environment projects because of their low cost and special properties. In oil production engineering or mining engineering, it is often necessary to block groundwater channels and karst channels. At present, domestic methods for sealing narrow permeable channels mostly use organic materials, which are easy to inject into deep formations, but they are expensive, cause great environmental pollution, unstable performance,...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B111/74
CPCC04B28/00C04B2111/74C04B2201/50C04B18/141C04B18/08C04B18/146C04B22/08C04B22/066C04B22/06C04B24/2652C04B24/18C04B24/383C04B2103/408C04B2103/22Y02W30/91
Inventor 钱钦王涛徐鹏马爱青曹秋芳冯海顺贺文媛郑万刚何绍群宋丹
Owner CHINA PETROLEUM & CHEM CORP