Scale removing agent and preparation method and application thereof

A technology of cleaning and diverting agent, applied in chemical instruments and methods, drilling compositions and other directions, can solve the problems of complex composition and properties, endangering site safety, and shutting down production and cleaning, etc., and achieves simple and easy preparation methods and equipment less demanding effects

Active Publication Date: 2016-06-15
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the actual operation effect of the three-phase separator in some old oilfield combined stations in China cannot meet the production requirements due to fouling
In addition, related equipment such as valves and flow meters on the water pipeline also increase the probability of failure due to serious fouling, which affects the smooth and safe operation of the three-phase separator.
Severe scaling inside the three-phase separator greatly reduces the oil-water separation space, seriously affects the dehydration effect of crude oil, and causes the sewage water quality to exceed the standard. Long-term scaling will suppress the pressure of the internal pipeline, resulting in a series of safety hazards
Pipeline fouling is even more harmful to site safety. Once the fouling is serious and the blockage is caused, the consequences will be disastrous
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Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Example 1

[0021] This embodiment provides a scale cleaning agent, in terms of weight percentage, the scale cleaning agent includes: HCl 10%, oleic acid amidopropyl betaine steering agent 2%, imidazoline quaternary ammonium salt corrosion inhibitor 0.5%, polyaspartame Acidic acid 10%, fatty alcohol ether sodium sulfate 5%, the balance is water.

[0022] The detergent of this embodiment is prepared by the following steps:

[0023] (a) Add 0.1 mol of oleic acid to a dried three-necked flask, add a small amount of zeolite, then heat with an electric heating mantle and start stirring to completely melt the oleic acid, then add 10ml of xylene as a water-carrying agent, and heat to 160 ℃, use a constant pressure dropping funnel to slowly add 0.1 mol of diethylenetriamine to the three-necked flask under agitation. Water gradually began to form, indicating that the amidation reaction started, and the reaction was continued at 160℃ for 3 hours. After the chemical reaction is over, u...

Example Embodiment

[0026] Example 2

[0027] This embodiment provides a scale cleaning agent, in terms of weight percentage, the scale cleaning agent includes: HCl 8%, meson acid amidopropyl betaine diverter 1.5%, imidazoline quaternary ammonium salt corrosion inhibitor 0.8%, polyaspartame Acidic acid 9%, fatty alcohol ether sodium sulfate 8%, the balance is water.

[0028] The detergent of this embodiment is prepared by the following steps:

[0029] (a) Add 0.1 mol of oleic acid to a dried three-necked flask, add a small amount of zeolite, then heat with an electric heating mantle and start stirring to completely melt the oleic acid, then add 10ml of xylene as a water-carrying agent, and heat to 160 ℃, use a constant pressure dropping funnel to slowly add 0.1 mol of diethylenetriamine to the three-necked flask under agitation. Water gradually began to form, indicating that the amidation reaction started, and the reaction was continued at 160℃ for 3 hours. After the chemical reaction is over, use an ...

Example Embodiment

[0032] Example 3

[0033] This embodiment provides a detergent, in terms of weight percentage, the detergent includes: HCl 8%, oleic acid amidopropyl betaine diverter 1%, meson acid amide propyl betaine diverter 0.8%, imidazoline Quaternary ammonium salt corrosion inhibitor 0.8%, polyaspartic acid 9%, fatty alcohol ether sodium sulfate 8%, and the balance is water.

[0034] The detergent of this embodiment is prepared by the following steps:

[0035] (a) Add 0.1 mol of oleic acid to a dried three-necked flask, add a small amount of zeolite, then heat with an electric heating mantle and start stirring to completely melt the oleic acid, then add 10ml of xylene as a water-carrying agent, and heat to 160 ℃, use a constant pressure dropping funnel to slowly add 0.1 mol of diethylenetriamine to the three-necked flask under agitation. Water gradually began to form, indicating that the amidation reaction started, and the reaction was continued at 160℃ for 3 hours. After the chemical reacti...

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Abstract

The invention provides a scale removing agent and a preparation method and application thereof. The scale removing agent is prepared from, by weight, 8%-10% of HCl, 1.5%-2% of turning agent, 0.5%-1% of imidazoline quaternary-ammonium-salt corrosion inhibitor, 8%-10% of polyaspartic acid, 5%-10% of sodium fatty alcohol ether sufate and the balance water. The preparation method of the synthesized scale removing agent is simple and easy to implement, the requirement on equipment is low, and on the premise of guaranteeing safe production of an oil field, scale in a three-phase separator and a pipeline can be slowly and completely removed.

Description

technical field [0001] The invention belongs to the technical field of oil and gas field surface engineering, and relates to a scale remover and its preparation method and application. Background technique [0002] At present, the actual operation effect of the three-phase separator in some old oilfield combined stations in China cannot meet the production requirements due to fouling. In addition, related equipment such as valves and flow meters on the water pipeline also increase the probability of failure due to serious fouling, which affects the smooth and safe operation of the three-phase separator. The internal scale of the three-phase separator is serious, which greatly reduces the oil-water separation space, seriously affects the dehydration effect of crude oil, and causes the sewage water quality to exceed the standard. Long-term scaling will suppress the pressure of the internal pipeline, resulting in a series of safety hazards. Pipeline fouling is even more harmfu...

Claims

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Application Information

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IPC IPC(8): C09K8/528
CPCC09K8/528C09K2208/32
Inventor 周飞王浩郑猛张群梁凌熏刘晶晶柳燕丽戴倩倩魏秀艳
Owner PETROCHINA CO LTD
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