Foaming drainage aid and preparation method thereof

A technology of foaming and drainage aids and active agents, which is applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of lack of foam stabilizers, reduce the adhesion of construction residual liquid, reduce fluid loss, etc., and achieve Good anti-condensate performance, good stability, and good flowback effect

Inactive Publication Date: 2019-05-14
PETROLEUM ENG TECH RES INST CHINA PETROLEUM & CHEM CORP NORTH CHINA OIL & GAS CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Chinese invention patent with the authorized announcement number of 101538462B discloses an oil well drainage aid, which is used to aid the drainage of residual fluid after acid fracturing of oil wells in oil fields. The weight percentage of each component is: dodecyl dimethyl benzyl chloride Ammonium industrial products: 7.5~13.5%; fatty alcohol polyoxyethylene ether, JFC-4 industrial product: 2~3.5%; polyoxyethylene alkyl alcohol ether-8JFC industrial product: 25~34%; fatty alcohol polyoxyethylene ether , JCF-6 industrial products: 3.5-5%; fluorocarbon surfactant FN-3 industrial products: 0.05-0.1%, the rest i

Method used

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  • Foaming drainage aid and preparation method thereof
  • Foaming drainage aid and preparation method thereof

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Effect test

Embodiment 1

[0024] The foaming aid of this embodiment is composed of the following components by mass percentage: cationic surfactant 8%, nonionic surfactant 2%, amine oxide amphoteric surfactant 10%; fluorocarbon surfactant 1% , auxiliary agent 15%, foam stabilizer 7%, the balance is water; cationic surfactant is dodecyl dimethyl benzyl ammonium chloride, nonionic surfactant is C 14 Fatty alcohol polyoxyethylene ether, amine oxide amphoteric surfactant is dodecyl dimethyl amine oxide, fluorocarbon surfactant is perfluoroalkyl ether quaternary ammonium salt cationic fluorocarbon surfactant, auxiliary agent is ethyl Diol, foam stabilizer is polypeptide.

[0025] The preparation method of the foaming and drainage aid in this embodiment comprises the following steps: take the components of the formulation amount, mix the non-ionic surfactant and the auxiliary agent, stir at room temperature until it dissolves evenly, and then add the fluorocarbon surfactant Agent and cationic surfactant, st...

Embodiment 2

[0027] The foaming and drainage aid of this embodiment is composed of the following components by mass percentage: cationic surfactant 8%, nonionic surfactant 5%, amine oxide amphoteric surfactant 15%; fluorocarbon surfactant 0.5% , auxiliary agent 20%, foam stabilizer 6%, the balance is water; cationic surfactant is octadecyl dimethyl benzyl ammonium chloride, nonionic surfactant is alkylphenol polyoxyethylene ether op- 10. The amine oxide amphoteric surfactant is octadecyl dimethyl amine oxide, the fluorocarbon surfactant is perfluoroalkyl ether quaternary ammonium salt cationic fluorocarbon surfactant, the auxiliary agent is ethylene glycol, and the foam is stabilized The agent is a polypeptide.

[0028] The preparation method of the foaming and drainage aid of this embodiment is the same as that of Embodiment 1.

Embodiment 3

[0030] The foaming and drainage aid of this embodiment is composed of the following components by mass percentage: cationic surfactant 8%, nonionic surfactant 5%, amine oxide amphoteric surfactant 12%; fluorocarbon surfactant 3% , auxiliary agent 18%, foam stabilizer 5%, the balance is water; cationic surfactant is dodecyl dimethyl benzyl ammonium chloride, nonionic surfactant is alkylphenol polyoxyethylene ether op- 10. The amine oxide amphoteric surfactant is octadecyl dimethyl amine oxide, the fluorocarbon surfactant is ethoxylated nonionic fluorocarbon surfactant, the auxiliary agent is glycerol, and the foam stabilizer is Polyacrylamide.

[0031] The preparation method of the foaming and drainage aid of this embodiment is the same as that of Embodiment 1.

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Abstract

The invention relates to a foaming drainage aid and a preparation method thereof, and belongs to the technical field of oil and gas exploitation. The foaming drainage aid comprises the following components in percentage by mass: 5-15% of a cationic surfactant, 0-15% of a nonionic surfactant, 5-20% of an amine oxide amphoteric surfactant, 0.1-3% of a fluorocarbon surfactant, 0-20% of an auxiliary agent, 5-12% of a foam stabilizer and the balance of water. The foaming drainage aid has excellent foaming performance, good salt resistance and condensate resistance, and good stability in 25% hydrochloric acid; the synergistic effect between the surfactants is fully utilized, the drainage aid and the foaming agent are combined together, one single agent simultaneously has functions of foaming and assisting in drainage, the types of auxiliary agents are reduced, the risk of incompatibility among the single agents is reduced, and the foaming drainage aid has important significance for reducingthe cost and enhancing the effect.

Description

technical field [0001] The invention relates to a foaming and drainage aid and a preparation method thereof, belonging to the technical field of oil and gas exploitation. Background technique [0002] During the exploitation of tight carbonate rock, because the reservoir has the characteristics of tight core, low porosity, low permeability, and low formation pressure, ordinary acid fracturing, pre-fluid acid fracturing, multi-stage injection acid fracturing, and The combined sand and acid fracturing process reforms the reservoir to realize deep acid fracturing in the carbonate reservoir, form a stable oil and gas flow channel, and finally achieve the purpose of increasing production. [0003] However, in the process of acid fracturing, fracturing fluid and acid fluid are used to enter the reservoir, especially after entering the tight ultra-low permeability reservoir, due to the lack of energy in the formation, there is a serious capillary self-absorption, and the fracture o...

Claims

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Application Information

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IPC IPC(8): C09K8/68
Inventor 邱小庆李国锋梅洁杨文波陈付虎王璇李雷党冰华方彦明唐勤王锐霞魏凯何荣华
Owner PETROLEUM ENG TECH RES INST CHINA PETROLEUM & CHEM CORP NORTH CHINA OIL & GAS CO
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