Controlled releasing microcapsule for scale prevention, wax prevention or viscosity reduction of oil well

A slow-release microcapsule and anti-wax technology, which is applied in wellbore/well components, drilling compositions, earth-moving drilling, etc., can solve the problem of high crude oil extraction cost, high labor intensity, large investment in dosing equipment, etc. problems, to achieve the effect of maintaining the overall shape, reducing labor intensity, and strong operability
CN102250604AInactive Publication Date: 2011-11-23ι—¨ζ­£ε›½
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
ι—¨ζ­£ε›½
Publication Date
2011-11-23
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention relates to the technical field of petrochemical engineering, in particular to a controlled releasing microcapsule for scale prevention, wax prevention or viscosity reduction of an oil well. The invention discloses a solid controlled releasing microcapsule for scale and corrosion prevention in the production process of crude oil and wax prevention or viscosity reduction in the production process of the crude oil as well as a preparation method thereof. Filler comprising an inorganic framework and agent components is arranged in a macromolecule composite membrane. The controlled releasing microcapsule has a stable structure comprising an inside inorganic framework support and an outer-layer macromolecular composite membrane wrapping film, can be used for realizing the slow release of the agent and achieving the aim of maintaining the agent effective for a long term as well as the functions of corrosion inhibition and dispersion. With proper volume and density, the controlled releasing microcapsule can be prevented from being taken away by an extraction solution and can be added through a sleeve; and the controlled releasing microcapsule is simple in process and is strong in maneuverability. According to the controlled releasing microcapsule, volatile matters and harmful components which do harm to the human health are avoided; various components can be basically and slowly dissolved; the labor intensity of workers is reduced; and one-time agent addition can ensure stable operation for 30-90 days.
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Description

technical field

[0001] The invention relates to the technical field of petrochemical industry, in particular to a slow-release microcapsule used for oil well scale prevention, wax prevention or viscosity reduction. It is a solid slow-release microcapsule used for anti-scaling and anti-corrosion of pipelines and pump bodies in the process of crude oil production, as well as for wax prevention or viscosity reduction of pipelines in the process of crude oil production, and a preparation method thereof. Background technique

[0002] As my country's oilfield mining gradually enters the middle and late stages, the water content of crude oil increases year by year, and this high salinity water corrodes the oil inlet pipe wall and scales the pipe wall and pump body very seriously.

[0003] Most of the currently used scale and corrosion inhibitors are in liquid state, it is inconvenient to add them continuously, and anti-freezing in winter is also a big problem, while most of the so...

Claims

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