Foam stabilizer composition, application of foam stabilizer composition, foam cement slurry, additive composition of foam cement slurry and applications of foam cement slurry and additive composition of foam cement slurry

Abstract

The invention relates to the field of petroleum and natural gas well cementing engineering, in particular to a foam stabilizer composition, application of the foam stabilizer composition, foam cement slurry, an additive composition of the foam cement slurry and application of the foam cement slurry and the additive composition of the foam cement slurry. The foam stabilizer composition contains alkylamide alkyl amine oxide containing C6 to C20, alkylamide lauryl betaine containing C6 to C20 and a triterpenoid saponin compound. The foam stabilizer composition provided by the invention can facilitate formation of foam cement slurry with high foam stability; when the foam stabilizer composition is used together with other effective components in the additive composition of the foam cement slurry, the foam cement slurry containing the additive composition can be formed into the foam cement slurry with low density, high foam stability, low permeability and high compressive strength; the foam stabilizer composition is particularly suitable for well cementing operation in a petroleum and natural gas exploration and development process.

Description

technical field [0001] The invention relates to the field of petroleum and natural gas cementing engineering, in particular to a foam stabilizer composition and its application, foam cement slurry and its additive composition and application. Background technique [0002] In the process of oil and gas exploration and development, it is often faced with low-pressure and leaky formations. When performing cementing operations in low-pressure, leaky formations, we often face the problems of cement slurry leakage and insufficient return height. In order to prevent cementing leakage, foam cement slurry is often used for cementing. [0003] Foamed cement slurry refers to filling the cement slurry with gas and improving the foam stability with surfactants or polymer substances, so as to prepare a stable and uniform low-density three-phase viscous fluid with low density, Low permeability, low water loss, low thermal conductivity, compressibility, high strength and other characteris...

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Problems solved by technology

[0009] The object of the present invention is to provide a kind of foam stabilizer composition that can obtain higher foam stability aiming at the defect of poor foam stability of existing foam cement slurry, and the foam stability of cement slurry is poor, and the density is difficult to reduce , high permeability of foamed cement stone and low compressive strength of foamed cement stone, etc., provides a kind of stable foam with good foam stability, can be reduced to lower density, low permeability of foamed cement stone and high compressive strength of foamed cement stone Foaming agent composition and its application and foam cement slurry and its additive composition and application

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