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Foam drainage agent with resistance to high-content gas condensate and resistance to high mineralization and preparation method of foam drainage agent

A high-salinity, foam-discharging agent technology, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of reduced foam performance, poor ability of foam-discharge agent to resist condensate oil, etc., and achieve excellent foaming , good resistance to high salinity, and the effect of reducing interfacial tension between oil and water

Active Publication Date: 2020-02-21
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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  • Foam drainage agent with resistance to high-content gas condensate and resistance to high mineralization and preparation method of foam drainage agent
  • Foam drainage agent with resistance to high-content gas condensate and resistance to high mineralization and preparation method of foam drainage agent
  • Foam drainage agent with resistance to high-content gas condensate and resistance to high mineralization and preparation method of foam drainage agent

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 foam drainage agent with resistance to high-content gas condensate and resistance to high mineralization and a preparation method of the foam drainage agent, and belongs to the technical field of materials for gas well mining in oil-gas fields. The foam drainage agent includes the following raw material components: in percent by mass, 20-35% of a zwitterionic surfactant,1-5% of a fluorocarbon surfactant, 1-5% of an anionic surfactant, 1-5% of cocinic acid monoethanolamide and the balance water. The preparation method comprises the steps: performing weighing, stirring, mixing and heating, and performing dissolution so as to obtain the foam drainage agent finished product. Through arrangement of the specific raw materials and the ratios, good resistance to high-content gas condensate and resistance to high mineralization are achieved, and it is ensured that the foam drainage agent can have excellent capacity of foam generation, foam stabilization and liquid carrying under the conditions of high-content gas condensate and high mineralization; and meanwhile, the foam drainage agent has a wide range of raw material sources, low price, a simple production technology, low requirements of equipment and environments and large-scale production.

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 Applications(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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