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Efficient composite foaming cleanup additive for fracturing and preparation method of efficient composite foaming cleanup additive

A foaming drainage aid and high-efficiency technology, applied in chemical instruments and methods, drilling compositions, etc., can solve the problem that the foaming drainage aid does not take into account the use effect, etc., and achieve excellent drainage performance and low cost. , easy to produce effect

Active Publication Date: 2022-05-06
HENAN TIANXIANG NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problem that existing foaming aids and drainage agents do not consider the use effect in high temperature and high salt environment, the present invention provides a low-cost, high-efficiency composite foaming aid and drainage agent for fracturing that is suitable for high temperature and high salt environments and its preparation method

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  • Efficient composite foaming cleanup additive for fracturing and preparation method of efficient composite foaming cleanup additive

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Effect test

Embodiment 1

[0021] The high-efficiency foaming aid of the present embodiment is composed of the following components in mass percentage: 1% sodium alkylsulfonate, 0.5% sodium alkenylsulfonate, 15% amine oxide surfactant, 3% betaine surfactant, 0.5% high temperature stabilizer, and the balance is water. The sodium salt of alkylsulfonic acid is sodium dodecylsulfonate, the sodium alkenylsulfonate is sodium C12 alkenylsulfonate, the amine oxide surfactant is cocamidopropyl amine oxide, and the betaine surfactant is Cocamidopropyl betaine, high temperature stabilizer is polyvinyl alcohol.

[0022] The preparation method of the high-efficiency foaming and drainage aid of the present embodiment comprises the following steps: first take the formula amount water, then add cocamidopropyl amine oxide, cocamidopropyl betaine, polyethylene Alcohol, after stirring evenly, add sodium dodecyl sulfonate and sodium C12 alkenyl sulfonate sequentially under stirring state, stir and dissolve evenly, and the...

Embodiment 2

[0024] The high-efficiency foaming aid of the present embodiment is composed of the following components in mass percentage: 1% sodium alkylsulfonate, 0.5% sodium alkenylsulfonate, 15% amine oxide surfactant, 3% betaine surfactant, 0.7% high temperature stabilizer, and the balance is water. The sodium salt of alkyl sulfonic acid is sodium petroleum sulfonate, the sodium alkenyl sulfonate is sodium C14 alkenyl sulfonate, the amine oxide surfactant is dodecyl dimethyl amine oxide, and the betaine surfactant is ten Dialkyl dimethyl betaine, high temperature stabilizer is polyethylene glycol.

[0025] The preparation method of the high-efficiency foaming and drainage aid of this embodiment comprises the following steps: firstly take the formula amount of water, and then add the formula amount of dodecyl dimethyl amine oxide and dodecyl dimethyl beet in a stirring state. Alkali, polyethylene glycol, after stirring evenly, add sodium petroleum sulfonate and sodium C14 alkenyl sulfo...

Embodiment 3

[0027] The high-efficiency foaming and drainage aid of the present embodiment is composed of the following components in mass percentage: 1% sodium alkylsulfonate, 0.5% sodium alkenylsulfonate, 18% amine oxide surfactant, 5% betaine surfactant, 0.7% high temperature stabilizer, and the balance is water. Alkyl sulfonate sodium salt is secondary alkyl sulfonate sodium, alkenyl sulfonate is sodium C16 alkenyl sulfonate, amine oxide surfactant is lauramide propyl amine oxide, betaine surfactant is octadecyl Amidopropyl betaine, high temperature stabilizer is polypropylene glycol.

[0028] The preparation method of the high-efficiency foaming and drainage aid of the present embodiment comprises the following steps: firstly take the formula amount of water, then add the formula amount of lauryl amidopropyl amine oxide, octadecamidopropyl betaine, and polypropylene glycol successively under stirring state , after stirring evenly, add sodium secondary alkyl sulfonate and sodium C16 a...

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Abstract

The invention provides an efficient composite foaming cleanup additive for fracturing and a preparation method of the efficient composite foaming cleanup additive. The efficient composite foaming cleanup additive is prepared from the following components in percentage by mass: 1-3% of alkyl sodium sulfonate, 0.5-1% of sodium alkenyl sulfonate, 15-20% of amine oxide surfactant, 2-5% of betaine surfactant, 0.5-1% of high-temperature stabilizer and the balance of water. The efficient composite foaming discharge aiding agent can be used in fracturing fluid for oil and gas field reservoir transformation, has stable foaming performance under the conditions that the water salinity is 80 mg / ml and the environment temperature is 150 DEG C or below, and can be suitable for a high-temperature and high-salt environment. When the use concentration is 0.3% (mass fraction), the surface tension of the aqueous solution is below 26 mN / m, the interfacial tension is below 0.8 mN / m, and the discharge aiding performance is excellent.

Description

technical field [0001] The invention relates to the technical field of oil and gas exploitation, in particular to a high-efficiency composite foaming and drainage aid for fracturing and a preparation method thereof. Background technique [0002] With the development of oil and gas fields, unconventional oil and gas reservoirs are often encountered, which are characterized by dense cores, low permeability, low formation pressure, high temperature, and high salinity in formation water. Usually, the reservoir is modified by water-based fracturing fluid, and a certain number of artificial fractures are added to the reservoir after modification, so as to increase the permeability of oil and gas. After the fracturing is completed, the return and discharge of the fracturing fluid is a very necessary work. On the one hand, the fracturing fluid leaves the formation to reduce formation damage, and on the other hand, the fracturing fluid leaves more completely, which is conducive to th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/68C09K8/60
CPCC09K8/602C09K8/68C09K8/885
Inventor 程秀菊常豫川刘君君何荣华方彦明李国锋刘现伟
Owner HENAN TIANXIANG NEW MATERIALS
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