Scale remover and preparation method thereof

A technology of descaling agent and control unit, applied in the field of descaling agent and its preparation, can solve the problems of secondary pollution of water body, poor descaling effect, polluted environment, etc., and achieve multiple coordination points and strong chelating ability , the effect of wide temperature range

Active Publication Date: 2017-09-15
成都百联油田技术服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this patent has the descaling function, it has poor temperature resistance, and the descaling effect is not good in high temperature environments, and it causes secondary pollution to the water body and pollutes the environment.

Method used

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  • Scale remover and preparation method thereof
  • Scale remover and preparation method thereof
  • Scale remover and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A detailed description will be given below in conjunction with the accompanying drawings.

[0038] The present invention provides a descaling agent formed by injecting at least one component material of the descaling agent into a well through a descaling agent injection device and mixing them. The component substances of the present invention include single substances and mixtures of at least two mutually nonreactive substances. Preferably, the mixture is formed by mixing at least two mutually non-reactive substances according to a certain mass ratio.

[0039] Such as figure 1 As shown, the descaling agent injection device of the present invention includes an input unit 10 , an injection unit 20 and a control unit 40 . The injection unit 20 is coupled with the wellhead 30 of the oil well. The control unit 40 is connected with the pressure device 70 and the trigger device 80 in a wired or wireless manner.

[0040] The feed unit 10 serves to feed at least one componen...

Embodiment 2

[0061] This embodiment is a further improvement on Embodiment 1, and repeated content will not be repeated here.

[0062] Such as image 3 As shown, the main channel 50 of the present invention is provided with a polymerization tube 60 . The main channel 50 is a cylindrical pipe, and the polymer tube 60 is cylindrical with inclined threads distributed on the outer surface. Preferably, the radius of the polymerization tube 60 is smaller than the radius of the main channel 50 . The space between the polymer tube 60 and the hole wall of the main channel 50 forms an annular space 61 . The annular space builds up to a certain pressure as the input line feeds the pressurized component material into the annular space. At least one component substance is sprayed on the surface of the polymer tube at a specified flow rate by the choke valve, and under the pressure of the annular space 61, flows along the inclined thread and uniformly gathers and mixes.

[0063] A pressure collectio...

Embodiment 3

[0074] This embodiment is a further improvement on Embodiment 1 and Embodiment 2, and repeated content will not be repeated here.

[0075] The invention provides a descaling method, which is characterized in that the descaling method is to inject at least one descaling agent component into the oil and gas well through a descaling agent injection device in a time-sharing and asynchronous manner, and the descaling agent The injection device at least includes an input unit, an injection unit and a control unit, and the injection unit coupled with the wellhead includes a main channel and at least one component for injecting the descaling agent and is provided with a flow characteristic according to the component The input pipe of the choke valve whose parameters control the injection rate and injection angle of the component, the control unit dynamically adjusts the flow characteristic parameters connected to the The input pressure of at least one input line between the input unit...

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PUM

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Abstract

The invention relates to a scale removal method. In the scale removal method, components of at least one type of scale remover are injected into an oil-gas well by a scale remover injector adopting a time-division asynchronous method, the scale remover injector at least comprises an input unit, an injection unit, and a control unit, the injection unit coupled with a wellhead comprises a main passage and at least one input pipe, the input pipe is used for injecting the components of the scale remover and provided with a chock valve which is used for controlling the jetting rate and jetting angle of the components according to the flow characteristic parameter of the components, and the control unit dynamically regulates the input pressure of at least one input pipeline connected between the input unit and the injection unit and the time-related jetting rate of the chock valve on the basis of a pressure level plan triggered by pressure information in the main passage and the flow characteristic parameter of the components. The invention can effectively remove calcium sulfate, and has the advantages of temperature resistance, oxygen resistance, strong concentrated base resistance and environment-friendliness.

Description

technical field [0001] The invention relates to the technical field of descaling agents, in particular to a descaling agent, a preparation method thereof and a descaling method. Background technique [0002] Descaling agent is a chemical preparation that removes scale, dirt and other stains, and is generally composed of multiple components. Industrial descaling agents are mainly used to remove dirt in heat exchange equipment, boilers, etc. Household descaling agents are mainly used to remove dirt in water dispensers. The main components are weak acids. HAC (acetic acid) is a green organic polymer compound free of three wastes (non-toxic, non-polluting and non-corrosive). HAC contains yellow HAC, nucleic acid and other organic components. HAC has excellent water solubility. In the process of boiler and circulating cooling water treatment, it complexes and chelates Ca and Mg to form finer, less viscous, fluidity-enhanced slag that is discharged along with the sewage, thereby ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/10C02F5/12E21B37/06C02F103/10
CPCC02F5/10C02F5/12C02F2103/10C02F2303/22E21B37/06
Inventor 白德旭李绍和曾义勇刘丹张林刘利丘家友
Owner 成都百联油田技术服务有限公司
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