Emulsion suspended early strength agent and preparation method thereof

Abstract

The invention relates to an emulsion suspended early strength agent and a preparation method thereof. The emulsion suspended early strength agent comprises the following components: 0.1-2 parts of organic alcohol amine; 5-10 parts of alkali metal chloride or alkaline earth metal chloride; 5-10 parts of alkali metal hydroxide or alkaline earth metal hydroxide; 30-50 parts of alkali metal carbonate or alkaline earth metal carbonate; 10-80 parts of mineral oil; 1-3 parts of an emulsifier; 0.2-0.8 part of a wetting agent; 0-3.5 parts of a flow pattern regulator; and 10-20 parts of water. The emulsifier is selected from one or more of nonionic emulsifiers. The emulsion suspended early strength agent has the advantages of small dosage, high strength and the like; and the thickening time of the cement paste at low temperature can be effectively shortened, and the low-temperature strength of the cement paste is improved.

Description

technical field

[0001] This article relates to a cementing early strength agent and a preparation method thereof, especially an emulsion suspension early strength agent and a preparation method thereof. Background technique

[0002] In the oil field cementing industry, a large amount of Portland cement is used as the base material of cementing slurry, and slow hydration at low temperature is an important inherent property of Portland cement. With the deepening of the exploration and development of deepwater oil and gas resources in the ocean, the water depth after drilling is getting deeper and the seabed temperature is getting lower and lower, which brings more and more challenges to the performance of deepwater cementing slurry. Among them, low temperature Under these conditions, the low-temperature thickening performance and low-temperature strength requirements of cement slurry are particularly significant. In order to solve this problem, it is a widely used measure to ...

Examples

Embodiment 1

[0085] 1) Weigh 3.4g Span-80 and 3.6g polyethylene glycol octylphenyl ether, add 300ml of mineral oil (Escaid110), stir at 11000 rpm for 10min at high speed;

[0086] 2) Dissolve 50g of calcium chloride in 100ml of distilled water to prepare a calcium chloride solution; add 2.2g of triethanolamine to the solution and stir evenly;

[0087] 3) Take 100ml of the above solution, add it into mineral oil with emulsifier and wetting agent at 11000 rpm, and keep stirring at high speed for 10min;

[0088] 4) Add 2.6g of octadecyltrimethylammonium chloride and keep stirring at high speed for 5 minutes;

[0089] 5) Add 40g of calcium hydroxide and 220g of calcium carbonate in sequence, and keep stirring at high speed for 10 minutes to obtain the emulsion suspension early strength agent; wherein the particle size of calcium hydroxide is 1250 mesh, and the particle size of calcium carbonate is 1250 mesh.

Embodiment 2

[0091] 1) Weigh 2.8g Span-80 and 4.2g polyethylene glycol octylphenyl ether, add 300ml of mineral oil (Escaid110), stir at 11000 rpm for 10min at high speed;

[0092] 2) Dissolve 50g of calcium chloride in 100ml of distilled water to prepare a calcium chloride solution; add 3.8g of diethanol monoisopropanolamine to this solution and stir evenly;

[0093] 3) Take 100ml of the above solution, add it into mineral oil with emulsifier and wetting agent at 11000 rpm, and keep stirring at high speed for 10min;

[0094] 4) Add 3.2g of octadecyltrimethylammonium chloride and keep stirring at high speed for 5 minutes;

[0095] 5) Add 80g of calcium hydroxide and 320g of calcium carbonate in sequence, and keep stirring at high speed for 10 minutes to obtain the emulsion suspension early strength agent; the particle size of calcium hydroxide is 1250 mesh, and the particle size of calcium carbonate is 1250 mesh.

Embodiment 3

[0097] 1) Weigh 1.7g Span-80 and 2.4g polyethylene glycol octylphenyl ether, add 300ml of mineral oil (Escaid110), stir at 11000 rpm for 10min at high speed;

[0098] 2) Dissolve 50g of calcium chloride in 100ml of distilled water to prepare a calcium chloride solution; add 2.2g of triethanolamine to the solution and stir evenly;

[0099] 3) Take 100ml of the above solution, add it into mineral oil with emulsifier and wetting agent at 11000 rpm, and keep stirring at high speed for 10min;

[0100] 4) Add 2.6g of octadecyltrimethylammonium chloride and keep stirring at high speed for 5 minutes;

[0101] 5) Add 40g of calcium hydroxide and 220g of calcium carbonate in sequence, and keep stirring at high speed for 10 minutes to obtain the emulsion suspension early strength agent; wherein the particle size of calcium hydroxide is 1250 mesh, and the particle size of calcium carbonate is 1250 mesh.

technical field

[0001] This article relates to a cementing early strength agent and a preparation method thereof, especially an emulsion suspension early strength agent and a preparation method thereof. Background technique

[0002] In the oil field cementing industry, a large amount of Portland cement is used as the base material of cementing slurry, and slow hydration at low temperature is an important inherent property of Portland cement. With the deepening of the exploration and development of deepwater oil and gas resources in the ocean, the water depth after drilling is getting deeper and the seabed temperature is getting lower and lower, which brings more and more challenges to the performance of deepwater cementing slurry. Among them, low temperature Under these conditions, the low-temperature thickening performance and low-temperature strength requirements of cement slurry are particularly significant. In order to solve this problem, it is a widely used measure to ...

Examples

Embodiment 1

[0085] 1) Weigh 3.4g Span-80 and 3.6g polyethylene glycol octylphenyl ether, add 300ml of mineral oil (Escaid110), stir at 11000 rpm for 10min at high speed;

[0086] 2) Dissolve 50g of calcium chloride in 100ml of distilled water to prepare a calcium chloride solution; add 2.2g of triethanolamine to the solution and stir evenly;

[0087] 3) Take 100ml of the above solution, add it into mineral oil with emulsifier and wetting agent at 11000 rpm, and keep stirring at high speed for 10min;

[0088] 4) Add 2.6g of octadecyltrimethylammonium chloride and keep stirring at high speed for 5 minutes;

[0089] 5) Add 40g of calcium hydroxide and 220g of calcium carbonate in sequence, and keep stirring at high speed for 10 minutes to obtain the emulsion suspension early strength agent; wherein the particle size of calcium hydroxide is 1250 mesh, and the particle size of calcium carbonate is 1250 mesh.

Embodiment 2

[0091] 1) Weigh 2.8g Span-80 and 4.2g polyethylene glycol octylphenyl ether, add 300ml of mineral oil (Escaid110), stir at 11000 rpm for 10min at high speed;

[0092] 2) Dissolve 50g of calcium chloride in 100ml of distilled water to prepare a calcium chloride solution; add 3.8g of diethanol monoisopropanolamine to this solution and stir evenly;

[0093] 3) Take 100ml of the above solution, add it into mineral oil with emulsifier and wetting agent at 11000 rpm, and keep stirring at high speed for 10min;

[0094] 4) Add 3.2g of octadecyltrimethylammonium chloride and keep stirring at high speed for 5 minutes;

[0095] 5) Add 80g of calcium hydroxide and 320g of calcium carbonate in sequence, and keep stirring at high speed for 10 minutes to obtain the emulsion suspension early strength agent; the particle size of calcium hydroxide is 1250 mesh, and the particle size of calcium carbonate is 1250 mesh.

Embodiment 3

[0097] 1) Weigh 1.7g Span-80 and 2.4g polyethylene glycol octylphenyl ether, add 300ml of mineral oil (Escaid110), stir at 11000 rpm for 10min at high speed;

[0098] 2) Dissolve 50g of calcium chloride in 100ml of distilled water to prepare a calcium chloride solution; add 2.2g of triethanolamine to the solution and stir evenly;

[0099] 3) Take 100ml of the above solution, add it into mineral oil with emulsifier and wetting agent at 11000 rpm, and keep stirring at high speed for 10min;

[0100] 4) Add 2.6g of octadecyltrimethylammonium chloride and keep stirring at high speed for 5 minutes;

[0101] 5) Add 40g of calcium hydroxide and 220g of calcium carbonate in sequence, and keep stirring at high speed for 10 minutes to obtain the emulsion suspension early strength agent; wherein the particle size of calcium hydroxide is 1250 mesh, and the particle size of calcium carbonate is 1250 mesh.

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