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Alcamines reinforcing agent, and preparation method and applications thereof

A technology of reinforcing agent and alcohol amine, applied in the field of alcohol amine reinforcing agent and preparation, can solve the problems of increasing the consistency of cement slurry, low early strength of cement slurry, etc. formation-promoting effect

Inactive Publication Date: 2017-03-29
CHANGQING GUJING OF CNPC CHUANQING DRILLING ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the invention is to solve the problems of increasing the consistency of the cement slurry and the low early strength of the cement slurry that the commonly used reinforcing agent calcium formate exists

Method used

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  • Alcamines reinforcing agent, and preparation method and applications thereof
  • Alcamines reinforcing agent, and preparation method and applications thereof
  • Alcamines reinforcing agent, and preparation method and applications thereof

Examples

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preparation example Construction

[0014] A method for preparing an alcohol amine reinforcing agent. Measure calcium formate and triethanolamine according to the proportion, put them into a conical stirring tank and stir for 15 to 25 minutes, so that the triethanolamine completely covers the calcium formate, and then add sodium silicate and stir for 25 minutes. ~35min, complete the preparation of the enhancer.

[0015] A cement slurry containing an alcohol amine reinforcing agent, the cement slurry is composed of cement:water:strengthening agent=100:92.5:2 in mass percentage.

[0016] A preparation method of cement slurry containing alcohol amine strengthening agent, take a slurry cup, place the slurry cup on the base of the mixer, and mix the cement and strengthening agent according to the proportion within 15s at the speed of 3800-4200r / min Put it into a slurry cup with water, when all the cement and reinforcing agent are added to the water, cover the lid of the mixing cup, and continue stirring at 11500-1250...

Embodiment 1

[0019] This embodiment provides an alcohol amine enhancer, which is composed of the following components in weight percentage: calcium formate, 45%; sodium silicate, 35%; and the balance is triethanolamine.

[0020] The preparation method of the above-mentioned alcohol amine enhancer is: according to the ratio, measure calcium formate and triethanolamine, put them into a conical stirring tank and stir for 15 minutes, so that the triethanolamine completely and evenly wraps the calcium formate, and then add sodium silicate and stir for 25 minutes , to complete the preparation of the enhancer.

[0021] The method of preparing cement slurry using the prepared alcohol amine reinforcing agent is to take a slurry cup, place the slurry cup on the base of the mixer, and put the cement and reinforcing agent into the water within 15 seconds at a speed of 3800r / min. In the slurry cup, according to the mass percentage of cement: water: reinforcing agent = 100: 92.5: 2, when the cement and ...

Embodiment 2

[0032] This embodiment provides an alcohol amine enhancer, which is composed of the following components in weight percentage: calcium formate, 46%; sodium silicate, 36%; the balance is triethanolamine.

[0033] The preparation method of the above-mentioned alcohol amine enhancer is: according to the proportion, measure calcium formate and triethanolamine, put them into a conical stirring tank and stir for 16 minutes, so that the triethanolamine completely and evenly wraps the calcium formate, and then add sodium silicate and stir for 26 minutes , to complete the preparation of the enhancer.

[0034] The method of preparing cement slurry using the prepared alcohol amine reinforcing agent is to take a slurry cup, place the slurry cup on the base of the mixer, and put the cement and reinforcing agent into the water within 15 seconds at a speed of 3900r / min. In the slurry cup, according to the mass percentage of cement: water: reinforcing agent = 100: 92.5: 2, when the cement and...

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Abstract

The invention provides a surface well cementing reinforcing agent used for oil well cement, and is an alcamines reinforcing agent. The alcamines reinforcing agent is composed of, by weight, 45 to 50% of calcium formate, 35 to 40% of sodium silicate, and the balance triethanolamine. The alcamines reinforcing agent is capable of increasing cement hydration speed greatly, promoting formation of set cement early strength, and possesses no corrosion effect on casing pipes and set cement. The early strength effects of alcamines are that alcamines are capable of promoting hydration of C3A in cement, accelerating formation of ettringite, increasing conversion speed of ettringite and single sulfuric acid type calcium sulphoaluminate, increasing generation amount of calcium sulphoaluminate, reducing the concentration of Ca2+ and Al3+ in liquid phase, promoting hydration of C3S in cement further, and accelerating development of set cement strength. The alcamines reinforcing agent contains no chlorine ion, and is capable of avoiding casing pipe corrosion caused by conventional chlorine-containing early strength agent; combination of alcamines with cement particles and water can be realized via hydrogen bonds and Van der Waals' force; adsorption by cement particles is realized; and cement hydration reaction depth is increased.

Description

technical field [0001] The invention belongs to the technical field of petroleum additives, and in particular relates to an alcohol amine enhancer, a preparation method and an application thereof. Background technique [0002] The surface cementing depth of conventional oilfield wells is relatively shallow, generally around 100-400m, and the formation temperature is low, around 10°C-20°C. Within this range, the cement slurry still has no strength after 12 hours and after 24 hours The strength of the cement slurry can only reach about 2.0MPa, which is far from meeting the strength requirements for secondary spud drilling. In addition, there are problems such as slow early strength development, low strength, and long waiting time of cement stone during low-temperature cementing. In order to solve the above problems Problem, put forward the strengthening agent, adding strengthening agent is the main method to shorten the setting time of cement slurry and improve the early stren...

Claims

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Application Information

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IPC IPC(8): C04B24/12C09K8/467
CPCC04B40/0039C09K8/467
Inventor 安娜李波李德伟王大权窦虎清
Owner CHANGQING GUJING OF CNPC CHUANQING DRILLING ENG