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Oil well cement channeling inhibitor with high compressive strength

A compressive strength, oil well cement technology, applied in the field of cement, can solve the problems of no anti-corrosion, low strength, no high strength, etc., to achieve good compressive strength, improve toughness, and delay the effect of thickening time

Inactive Publication Date: 2017-10-27
四川宏升石油技术开发有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that when the existing anti-channeling agent is used under high pressure and high temperature, its strength is low, and it does not have good anti-corrosion performance. The purpose is to provide oil well cement anti-channeling agent with high compressive strength. agent to solve the problem that the existing oil well cement does not have high strength under the action of anti-channeling agent under high pressure and high temperature

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The oil well cement anti-channeling agent with high compressive strength of the present invention comprises the following components in parts by weight: 12 parts of calcium formate, 14 parts of sodium aluminate, 13 parts of sodium silicate, 22 parts of styrene-butadiene rubber emulsion, and 9 parts of slag , 7 parts of mica, 5 parts of kaolinite, 11 parts of butadiene-styrene, 12 parts of phosphate, 7 parts of sulfonate, and 10 parts of defoamer. The sulfonate is a sulfonate of formaldehyde and acetone. The slag is the slag mainly composed of aluminosilicate material in the steelmaking blast furnace, and its activity is more than 80%.

[0019] The anti-channeling agent prepared in this example is used in oil well cement, and its compressive strength under high temperature and high pressure is increased by 8.9% compared with the existing one, and other properties are also better.

Embodiment 2

[0021] Oil well cement anti-channeling agent with high compressive strength, including the following components in parts by weight: 5 parts of calcium formate, 2 parts of sodium aluminate, 4 parts of sodium silicate, 3 parts of styrene-butadiene rubber emulsion, 1 part of slag, mica 1 part, 2 parts of kaolinite, 2 parts of butadiene-styrene, 3 parts of phosphate, 1 part of sulfonate, 3 parts of defoamer. The sulfonate is a sulfonate of formaldehyde and acetone. The slag is the slag mainly composed of aluminosilicate material in the steelmaking blast furnace, and its activity is more than 80%.

[0022] The value range of the components in Example 2 is outside the value range of the present invention. The anti-channeling agent prepared in Example 2 is used in oil well cement, and its compressive strength is reduced compared with the existing one under high temperature and high pressure. 0.4%, other performance is also poor.

Embodiment 3

[0024] Oil well cement anti-channeling agent with high compressive strength, including the following components in parts by weight: 25 parts of calcium formate, 21 parts of sodium aluminate, 35 parts of sodium silicate, 34 parts of styrene-butadiene rubber emulsion, 37 parts of slag, mica 24 parts, kaolinite 15 parts, butadiene-styrene 35 parts, phosphate 27 parts, sulfonate 29 parts, defoamer 27 parts. The sulfonate is a sulfonate of formaldehyde and acetone. The slag is the slag mainly composed of aluminosilicate material in the steelmaking blast furnace, and its activity is more than 80%.

[0025] The value range of the components in Example 3 is outside the value range of the present invention, and the anti-channeling agent prepared in Example 3 is used in oil well cement, and its compressive strength under high temperature and high pressure increases compared with the existing 7.9%, other properties are also better, but compared with embodiment 1, the compressive strengt...

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PUM

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Abstract

The invention discloses an oil well cement channeling inhibitor with high compressive strength. The oil well cement channeling inhibitor is prepared from the following components in parts by weight: 10 to 15 parts of calcium formate, 8 to 17 parts of sodium aluminate, 12 to 18 parts of sodium silicate, 15 to 23 parts of butadiene styrene rubber emulsion, 8 to 13 parts of ore slag, 5 to 10 parts of mica, 4 to 9 parts of kaolinite, 10 to 15 parts of butadiene-styrene, 11 to 15 parts of phosphate, 6 to 10 parts of sulfonate, and 8 to 13 parts of defoaming agent.

Description

technical field [0001] The invention relates to the field of cement, in particular to an oil well cement anti-channeling agent with high compressive strength. Background technique [0002] With the continuous deepening of oil and gas exploration and development, there are more and more wells with high pressure, salt-gypsum layer and easy channeling. The shrinkage of the volume makes the bonding quality of the cement sheath unguaranteed, and in severe cases, micro-gap may be formed, causing the formation fluid (oil, water, gas) to flow; the high filtration loss makes the cement slurry dehydrated and blocked during the construction process, making it impossible to continue cementing After the cement slurry filtrate enters the pores of the oil and gas layer, it will cause water sensitivity due to its incompatibility with the fluid in the formation, causing pollution of the oil and gas layer, affecting oil and gas production, and in severe cases, completely blocking the oil and ...

Claims

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Application Information

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IPC IPC(8): C09K8/467C04B24/26
CPCC09K8/467C04B40/0039C04B12/04C04B24/2676C04B18/141C04B22/16C04B24/16C04B2103/50C04B24/00C04B22/00
Inventor 徐峰
Owner 四川宏升石油技术开发有限责任公司