A foaming agent for anti-high condensate oil and anti-high salinity and preparation method thereof

A high-salinity, foam-discharging agent technology, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of poor anti-condensate oil and reduced foam performance of foam-discharging agents, and achieve good anti-high Salinity ability, excellent foaming, good resistance to high concentration electrolysis

Active Publication Date: 2021-09-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the foam performance evaluation experiment of the foam release agent, the foam performance decreases with the increase of the condensate oil content. When the condensate oil content is 20% and 30%, the half-life of the foam is less than 3min. Poor ability to resist condensate

Method used

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  • A foaming agent for anti-high condensate oil and anti-high salinity and preparation method thereof
  • A foaming agent for anti-high condensate oil and anti-high salinity and preparation method thereof
  • A foaming agent for anti-high condensate oil and anti-high salinity and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] A foaming agent used to resist high condensate oil and high salinity, in terms of mass percentage, includes the following raw material components:

[0059] Zwitterionic surfactant 20%

[0060] Fluorocarbon Surfactant 1%

[0061] Anionic surfactant 1%

[0062] Coco Monoethanolamide 1%

[0063] The rest is water.

[0064] The zwitterionic surfactant is cocamidopropyl sulfobetaine.

[0065] The fluorocarbon surfactant is perfluorooctanesulfonyl fluoride.

[0066] The anionic surfactant is sodium lauryl sulfate.

[0067] Described water is distilled water.

[0068] A method for preparing a foaming agent for resisting high condensate oil and high salinity, comprising the following steps:

[0069] A. According to proportioning, take by weighing zwitterionic surfactant, fluorocarbon surfactant, anionic surfactant water and coconut oil monoethanolamide respectively;

[0070] B. Put the zwitterionic surfactant, fluorocarbon surfactant and anionic surfactant weighed in ...

Embodiment 2

[0074] A foaming agent used to resist high condensate oil and high salinity, in terms of mass percentage, includes the following raw material components:

[0075] Zwitterionic surfactant 35%

[0076] Fluorocarbon Surfactant 5%

[0077] Anionic surfactant 5%

[0078] Coco Monoethanolamide 5%

[0079] The rest is water.

[0080] The zwitterionic surfactant is cocamidopropyl sulfobetaine.

[0081] The fluorocarbon surfactant is perfluorooctanesulfonyl fluoride.

[0082] The anionic surfactant is sodium lauryl sulfate.

[0083] Described water is distilled water.

[0084] A method for preparing a foaming agent for resisting high condensate oil and high salinity, comprising the following steps:

[0085] A. According to proportioning, take by weighing zwitterionic surfactant, fluorocarbon surfactant, anionic surfactant water and coconut oil monoethanolamide respectively;

[0086] B. Put the zwitterionic surfactant, fluorocarbon surfactant and anionic surfactant weighed in ...

Embodiment 3

[0090] A foaming agent used to resist high condensate oil and high salinity, in terms of mass percentage, includes the following raw material components:

[0091] Zwitterionic surfactant 22%

[0092] Fluorocarbon Surfactant 2%

[0093] Anionic surfactant 5%

[0094] Coco Monoethanolamide 3%

[0095] The rest is water.

[0096] The zwitterionic surfactant is cocamidopropyl sulfobetaine.

[0097] The fluorocarbon surfactant is perfluorooctanesulfonyl fluoride.

[0098] The anionic surfactant is sodium lauryl sulfate.

[0099] Described water is distilled water.

[0100] A method for preparing a foaming agent for resisting high condensate oil and high salinity, comprising the following steps:

[0101] A. According to proportioning, take by weighing zwitterionic surfactant, fluorocarbon surfactant, anionic surfactant water and coconut oil monoethanolamide respectively;

[0102] B. Put the zwitterionic surfactant, fluorocarbon surfactant and anionic surfactant weighed in ...

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Abstract

The invention discloses a foaming agent for resisting high condensate oil and high salinity and a preparation method thereof, and belongs to the technical field of materials for gas well development in oil and gas fields. In terms of mass percentage, it includes the following raw material components: 20-35% of zwitterionic surfactants, 1-5% of fluorocarbon surfactants, 1-5% of anionic surfactants and 1-5% of cocoic acid monoethanolamide , and the rest is water. After weighing, stirring, mixing, heating and dissolving, the finished product of the foaming agent is obtained. Through the setting of specific raw materials and their proportions, good resistance to high condensate oil and high salinity can be achieved, ensuring that the foaming agent still has excellent foaming and high salinity under the conditions of high condensate oil and high salinity. Foam stability and liquid-carrying ability; at the same time, the source of raw materials is wide, the price is low, the production process is simple, the requirements for equipment and environment are low, and large-scale production can be realized.

Description

technical field [0001] The invention belongs to the technical field of materials used in gas well development in oil and gas fields, and in particular relates to a foaming agent for resisting high condensate oil and high salinity and a preparation method thereof. Background technique [0002] In the initial stage of natural gas exploitation, the gas well itself has sufficient power, and the formation water is carried to the surface under the lift of the gas flow; Bottomhole fluid accumulates at the bottom, resulting in a decrease in gas production. With the increase of formation water in the wellbore, the gas well will eventually be flooded and unable to produce gas. In order to solve the problem of bottom-hole fluid accumulation, plunger gas extraction and drainage gas recovery technology, pipe string drainage gas recovery technology, foam drainage gas recovery technology, mechanical pumping drainage gas recovery technology or electric submersible pump drainage gas recovery...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/584
CPCC09K8/584
Inventor 王旭冯玉军申洪瞿超超李祖友殷鸿尧周兴付王雨生鲁光亮王浩儒傅春梅黄文杰王峻峰符东宇唐雷柏明宏
Owner CHINA PETROLEUM & CHEM CORP
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