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Foam stabilizer composition and foamed cement slurry and preparation method thereof

A technology of composition and foam stabilizer, which is applied in the direction of drilling composition, chemical instruments and methods, etc., can solve the problems of high compressive strength of cement stone, poor foam stability, low density, etc., and achieve high compressive strength, High foam stability, low density effect

Active Publication Date: 2018-07-31
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a foam stabilizer composition capable of obtaining higher foam stability for the defects of poor foam stability of existing foamed cement slurries, as well as poor low-temperature foam stability and difficulty in reducing the density of cement slurries. In order to solve the problems of low compressive strength of foamed cement at low temperature, a method for preparing foamed cement slurry using the foam stabilizer composition is provided. The foamed cement slurry obtained by the method has good foam stability, low density and high compressive strength of cement stone. higher

Method used

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  • Foam stabilizer composition and foamed cement slurry and preparation method thereof
  • Foam stabilizer composition and foamed cement slurry and preparation method thereof
  • Foam stabilizer composition and foamed cement slurry and preparation method thereof

Examples

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Effect test

Embodiment 1-6

[0073] This example serves to illustrate the foam stabilizer composition.

[0074] According to the formula shown in Table 1, the listed alkyl imidazoline compounds, betaine compounds, alkyl polyglucoside compounds, tea saponin liquid and appropriate water are configured into aqueous solutions of corresponding concentrations, respectively to obtain stable Foaming agents F1-F6.

Embodiment 2

[0086] This example is used to illustrate the foamed cement slurry of the present invention.

[0087] According to the method of foam cement slurry embodiment 1, the difference is that the first gas generating agent adopts dihydrazide carbonate instead of hydrazine, the second gas generating agent adopts sodium chlorite instead of chlorine dioxide, and the foam stabilizer adopts foam stabilizer F2 replaces F1 to obtain foam cement slurry S2 with a density of 0.90 g / cm 3 , wherein, excluding the solvent component, the weight ratio of cement, the first air-generating agent, the second air-generating agent, foam stabilizer, low-temperature strengthening agent, water loss reducing agent, dispersant, early strength agent and water consumption is 100: 0.45:0.93:1.5:10:1.55:0.3:3.5:58.

Embodiment 3

[0089] This example is used to illustrate the foamed cement slurry of the present invention.

[0090] According to the method of foamed cement slurry embodiment 1, the difference is that the first gas-generating agent adopts hydroxylamine hydrochloride to replace hydrazine, the second gas-generating agent adopts potassium chlorite to replace chlorine dioxide, and the foam stabilizer adopts foam stabilizer F3 to replace F1, Thereby obtain foam cement slurry S3, its density is 1.14g / cm 3 , wherein, excluding the solvent component, the weight ratio of cement, the first air-generating agent, the second air-generating agent, foam stabilizer, low-temperature strengthening agent, water loss reducing agent, dispersant, early strength agent and water consumption is 100: 0.42:0.88:1.4:9:1.5:0.3:3.2:54.

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Abstract

The invention relates to the field of petroleum and natural gas cementing engineering and particularly discloses a foam stabilizer composition. The composition contains C6-C16 alkyl imidazoline, C8-C16 alkylamide alkyl betaine, C6-C14 alkyl polyglucoside and triterpenoid saponin compounds. The invention also discloses a method for preparing foamed cement slurry by using the foam stabilizer composition. The method disclosed by the invention is favorable for forming the foamed cement slurry with higher foam stability by using the foam stabilizer composition provided by the invention, and the obtained foamed cement slurry has lower density, higher foam stability and high compressive strength and is especially suitable for low-temperature shallow cementing operation in petroleum and natural gas exploration and development processes.

Description

technical field [0001] The invention relates to the field of petroleum and natural gas cementing engineering, in particular to a foam stabilizer composition, a foam cement slurry and a preparation method thereof. Background technique [0002] In the process of oil and gas exploration and development, some shallow formations are often faced with low pressure, leaky formations, and even fractured formations. When performing cementing operations in shallow low-pressure, leak-prone, and fractured formations, in addition to the problems of cement slurry leakage and insufficient return height, there are also low-temperature problems (temperature as low as 5-20°C). [0003] Foam cement slurry is to fill gas (mainly nitrogen) into cement slurry, and use surfactants and other substances to improve the stability of foam. It is a low-density three-phase viscous fluid with low density, low permeability, Low water loss, low thermal conductivity, compressibility, high mud replacement eff...

Claims

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Application Information

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IPC IPC(8): C04B24/12C04B28/00C09K8/467C09K8/473C04B103/48
CPCC04B28/00C04B40/0039C04B2103/48C04B2111/00724C09K8/467C09K8/473C04B24/128C04B24/124C04B24/168C04B24/2623C04B24/166C04B22/06C04B22/124C04B22/00C04B22/12
Inventor 王成文王星星王恒王彦集
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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