Composite multiple dirt dispersion agent for oilfield flooding treatment and preparation method thereof

A scale inhibitor and dispersant, multi-technology, applied in water/sludge/sewage treatment, chemical instruments and methods, scale removal and water softening, etc. To solve the problem of single scale effect, it can achieve the effect of high-efficiency silica scale deposition, preventing silica scale deposition, and good scale inhibition and dispersion performance.
CN102167451AActive Publication Date: 2011-08-31SHANGHAI MEIJING ENVIRONMENTAL PROTECTION MATERIALS
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI MEIJING ENVIRONMENTAL PROTECTION MATERIALS
Publication Date
2011-08-31

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Abstract

The invention belongs to the technical field of oilfield flooding treatment, and particularly relates to a composite multiple dirt dispersion agent for oilfield flooding treatment and a preparation method thereof. The composite multiple dirt dispersion agent is composed of polyepoxysuccinic acid sodium, polyaspartic acid sodium, polymaleic acid, 2-phosphonobutane-1,2,4-tricarboxylic acid, hexamethylenediamine tetra(methylene phosphonic acid) hexapotassium salt and polyamidoamine using hexamethylene diamine as the core. The composite multiple dirt dispersion agent has the characteristics of less consumption and wide range of application, can effectively prevent deposition of calcium carbonate, calcium sulfate, barium sulfate and silicate of an oilfield flooding system, and is applicable to the oilfield flooding system under conditions of high temperature, hypersalinity and high alkalinity as well as the oilfield flooding system under the conditions of high temperature, hypersalinity and high acidity.
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Description

technical field

[0001] The invention belongs to the technical field of industrial water treatment, and in particular relates to a water treatment scale inhibitor dispersant used in an oilfield water injection system and a preparation method thereof, in particular to a composite multi-element oilfield water injection treatment scale inhibitor dispersant and a preparation method thereof. Background technique

[0002] With the rapid development of the economy, oil production has become an important industry related to the lifeline of the national economy. At present, most of my country's oil fields are in the middle and late stage of development, and water injection development has become a main way to enhance oil recovery. Some oil fields have reached the stage of tertiary oil recovery, and the amount of water injection is increasing. With the increase of water injection, the water content of crude oil continues to rise, and the amount of oily sewage is increasing. The dischar...

Claims

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