Foam drainage agent composition and preparation method and application thereof

Abstract

The invention relates to a foam drainage agent composition for drainage and gas recovery of a high temperature deep well, and a preparation method and application of the foam drainage agent composition. The problems that in the exploitation process of an existing high-temperature deep well gas well, the amount of accumulated liquid is excessively large, and consequently production reducing and even injection stopping of the gas well are caused are mainly solved. By adopting the technical scheme that the foam drainage agent composition is prepared from the following components in parts by mass:(1) 1 part of alkylamine polyether, (2) 0.1-50 parts of a long chain polyether nitrogen-containing compound, and (3) 0-10 parts of nanoparticles, wherein the alkylamine polyether has the general molecular formula shown in the formula (I); the long chain polyether nitrogen-containing compound has the general molecular formula shown in the formula (II); R1 is any one of alkyls from C8 to C20; m, n,p and q are each the arbitrary number from 0 to 20; and R1 is a fatty group of C10 to C26, the problems are solved well, and the foam drainage agent composition can be used for the high-temperature gas well drainage and gas recovery industry. (please see the specifications for the formula).

Description

technical field [0001] The invention relates to a foam drainage agent composition and its preparation method and application, which are especially suitable for high-temperature deep wells. Background technique [0002] With the intensification of gas field exploitation, water production from gas fields has become a key issue restricting the normal production of gas wells. Foam drainage gas recovery is a drainage gas recovery technology developed rapidly at home and abroad in recent years. It has the advantages of simple equipment, convenient construction, low cost, wide range of applicable well depths, and does not affect the normal production of gas wells. Foam drainage is to inject a foaming agent into the well through the tubing or tubing annulus, and generate foam with certain stability under the agitation of the air flow. The liquid phase deposited by slippage in the pipe turns into foam, which changes the relative density of the fluid in the lower part of the pipe, an...

AI Technical Summary

Problems solved by technology

[0004] One of the technical problems to be solved by the present invention is that in the development process of existing high-temperature deep gas wells, there is too much liquid accumulation, which leads to the problem of gas well reduction or even stop spraying. It provides a foam discharge agent composition, especially a high-temperature-resistant drainage Foam discharge agent composition for gas production, used in gas wells, especially high-temperature deep wells, can carry liquid efficiently, and has good temperature resistance, foaming performance and liquid-carrying ability

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