A functional desmosome plugging agent and its preparation method and application

A technology of plugging agent and desmosome, which is applied in the direction of chemical instruments and methods, earth drilling, mining fluids, etc. It can solve the problems of easy plugging of low-permeability layers, poor temperature resistance, salt resistance, and limited application, so as to achieve convenient construction , high tensile strength and low shrinkage
CN105802597BActive Publication Date: 2018-02-09北京石大瑞伽石油技术开发有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
北京石大瑞伽石油技术开发有限公司
Publication Date
2018-02-09

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Abstract

The invention provides a functional desmosome profile control agent and a preparation method and application thereof.The functional desmosome profile control agent is prepared from, by weight, 0.5%-11% of functional desmosome profile control agent particles, 0.1%-1% of guanidine gum and the balance water, wherein the total weight of the functional desmosome profile control agent is 100%, the functional desmosome profile control agent particles comprise inner cores, thermal swelling crosslinking resin films and semi-permeable protective films, the surfaces of the inner cores are wrapped by the thermal swelling crosslinking resin films, and the surfaces of the thermal swelling crosslinking resin films are wrapped by the semi-permeable protective films.The invention further provides the preparation method of the functional desmosome profile control agent and application of the functional desmosome profile control agent in oil well deep profile control.The functional desmosome profile control agent has the characteristics of temperature resisting, salt resisting, swelling delaying, crosslinking under heating and the like and is a novel profile control agent which is convenient to construct and easy to operate.
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Description

Technical field

[0001] The invention relates to a functional bridge particle plugging control agent, a preparation method and application thereof, and belongs to the technical field of oil extraction in the process of oil reservoir development. Background technique

[0002] Water production from oil wells is a common problem in the development of oil fields. my country’s oil fields are dominated by continental deposits, with serious reservoir heterogeneity. With the increase in development years, due to long-term water erosion, clay expansion, particle migration, sand production, fluid mobility differences, operation failures, and incorrect production measures The heterogeneity of the oil layer is further deteriorated and the formation of water flow dominant channels in the formation, leading to water cones, water channeling, and water fingering, causing some oil wells to see water or flooding prematurely, and water flooding is inefficient or ineffective. At present, the average ...

Claims

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