Condensate-oil-resistant, salt-resistant and temperature-resistant foam scrubbing agent and preparation method thereof

A technology for condensate oil and foam unloading agent, which is applied in the field of condensate oil-resistant, salt-resistant and temperature-resistant foam unloading agent and its preparation field, can solve the problem of sudden increase in the influence of foam unloading agent performance, decrease in foaming and liquid-carrying ability, and emulsification. The problem of high viscosity can achieve the effect of good liquid-carrying ability, less harsh reaction conditions and simple preparation method.

Inactive Publication Date: 2020-05-12
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, condensate oil is easy to emulsify, and the viscosity of the emulsion formed after emulsification is higher than that of single-phase liquid, which stays at the bottom of the well and easily causes bottom well pollution
Existing anti-foaming agents for condensate oil are mainly suitable for gas wells with low content of condensate oil, less water production, no serious fluid accumulation, and low temperature. For example, the patent application number is 201410082682.5. Inefficient or even ineffective
When the salinity increases to a certain height, the impact on the performance of the foaming agent increases suddenly, resulting in a rapid decline in foaming and liquid-carrying capacity

Method used

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  • Condensate-oil-resistant, salt-resistant and temperature-resistant foam scrubbing agent and preparation method thereof
  • Condensate-oil-resistant, salt-resistant and temperature-resistant foam scrubbing agent and preparation method thereof

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specific Embodiment approach

[0023] It should be noted that the structures, proportions, sizes, etc. shown in this specification are only used to cooperate with the content disclosed in the specification for the understanding and reading of those familiar with this technology, and are not used to limit the conditions for the implementation of the present invention , any modification of structure, change of proportional relationship or adjustment of size shall still fall within the scope covered by the technical content disclosed in the present invention without affecting the effect and purpose of the present invention. .

[0024] At the same time, terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit this specification. The practicable scope of the invention and the change or adjustment of its relative relationship shall also be regarded as the practicable scope of the present invention without...

Embodiment 1

[0026] The invention discloses a condensate-resistant, salt-resistant, and temperature-resistant foaming agent, which consists of cocoamidopropyl dimethyl tertiary amine, oleic acid amidopropyl dimethyl tertiary amine, erucamide propyl dimethyl tertiary amine Amine, chloroacetic acid, liquid caustic soda, organic solution and water, wherein the weight percentage of each component is: 8%~22% cocamidopropyl dimethyl tertiary amine, 3%~12% oleic acid amidopropyl Dimethyl tertiary amine, 3%~15% erucamide propyl dimethyl tertiary amine, 3%~18% chloroacetic acid, 8%~22% liquid caustic soda, 6%~20% organic solution, water to make up the remaining quantity.

Embodiment 2

[0028] The invention discloses a condensate-resistant, salt-resistant, and temperature-resistant foaming agent, which consists of cocoamidopropyl dimethyl tertiary amine, oleic acid amidopropyl dimethyl tertiary amine, erucamide propyl dimethyl tertiary amine Amine, chloroacetic acid, liquid caustic soda, organic solution and water, wherein the weight percentage of each component is: 8%~22% cocamidopropyl dimethyl tertiary amine, 3%~12% oleic acid amidopropyl Dimethyl tertiary amine, 3%~15% erucamide propyl dimethyl tertiary amine, 3%~18% chloroacetic acid, 8%~22% liquid caustic soda, 6%~20% organic solution, water to make up the remaining quantity.

[0029] Preferably, the weight percentage of each component is: 10%~20% cocamidopropyl dimethyl tertiary amine, 5%~10% oleic acid amidopropyl dimethyl tertiary amine, 5%~ 10% erucamide propyl dimethyl tertiary amine, 5%~15% chloroacetic acid, 10%~20% liquid caustic soda, 10%~15% organic solution, water to make up the balance.

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Abstract

The invention discloses a condensate-oil-resistant, salt-resistant and temperature-resistant foam scrubbing agent and a preparation method thereof. The condensate-oil-resistant, salt-resistant and temperature-resistant foam scrubbing agent is composed of the following components in percentages by weight: 8%-22% of cocamidopropyl dimethyl tertiary amine, 3%-12% of oleamide propyl dimethyl tertiaryamine, 3%-15% of erucyl amide propyl dimethyl tertiary amine, 3%-18% of chloroacetic acid, 8%-22% of liquid caustic soda and 6%-20% of organic solution, with the balance being water. According to theinvention, through selection and specific proportion design of raw materials, the liquid carrying capacity of the foam scrubbing agent is still high under the condition of high condensate oil content;meanwhile, the liquid carrying capacity cannot be reduced along with increase of the condensate oil content; and the problem that a conventional foam scrubbing agent cannot simultaneously meet the requirements for high temperature resistance, salt resistance and condensate oil resistance is solved.

Description

technical field [0001] The invention belongs to the technical field of foam drainage agents for gas fields, and in particular relates to a condensate oil-resistant, salt-resistant, and temperature-resistant foam drainage agent and a preparation method thereof. Background technique [0002] The flow state of most gas wells during normal production is annular fog state, the liquid is carried to the surface by the gas in the form of droplets, the gas is the continuous phase and the liquid is the discontinuous phase. When the flow rate of the gas phase is too low to provide enough energy to continuously bring the liquid phase out of the wellhead, the liquid phase will slip from the gas phase, flow in the opposite direction to the gas flow, and accumulate at the bottom of the well, forming bottom well fluid accumulation. Fluid accumulation in the wellbore will increase the back pressure on the bottom of the well, limiting the productivity of the well. If the amount of fluid accu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/584
CPCC09K8/584
Inventor 惠艳妮桂捷刘双全田伟徐文龙杨亚聪贾友亮李彦彬李楼楼李旭日
Owner PETROCHINA CO LTD
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