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Floating type foam scrubbing rod for gas production of oil and gas field and preparation method of floating type foam scrubbing rod

A foam row and floating technology, which is applied in the field of oil and gas field gas recovery floating foam row and its preparation, can solve the problems of poor adaptability of condensate oil, improve the liquid drainage effect, increase the gas production, and compatibility good sex effect

Pending Publication Date: 2021-08-24
CHINA PETROLEUM & CHEM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the existing foam defoaming agent is not adaptable to high salinity and condensate oil, the present invention provides a floating foam discharge rod for gas recovery in oil and gas fields. The composition formula of the foam discharge rod is optimized. Improved foaming, foam stabilization and foam carrying capacity, good compatibility with formation water, suitable for foam drainage in gas wells with high content of condensate oil and high salinity

Method used

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  • Floating type foam scrubbing rod for gas production of oil and gas field and preparation method of floating type foam scrubbing rod

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A floating foam row stick for gas recovery in oil and gas fields, comprising the following components in parts by weight: 15 parts of cocamidopropyl betaine, 15 parts of lauryl amidopropyl hydroxysultaine, and 22 parts of fatty alcohol polyoxyethylene ether 8 parts of xanthan gum, 12 parts of polyethylene glycol, 10 parts of sodium hypochlorite, 25 parts of urea, 9 parts of carboxymethyl cellulose, and 10 parts of sodium chloride.

[0022] The preparation method of above-mentioned soaking stick comprises the steps:

[0023] (1) Import cocamidopropyl betaine, lauryl amidopropyl hydroxysultaine, and fatty alcohol polyoxyethylene ether into the container according to the proportion, stir until mixed evenly, and heat to 52°C;

[0024] (2) Add xanthan gum, polyethylene glycol, sodium hypochlorite, urea, carboxymethyl cellulose, and sodium chloride, stir until evenly mixed, and heat up to 70°C until the material is dried;

[0025] (3) After the mixed material is cooled to ro...

Embodiment 2

[0028] A floating foam row rod for gas recovery in oil and gas fields, comprising the following components in parts by weight: 17 parts of lauryl amidopropyl hydroxysultaine, 15 parts of dodecyl dimethyl betaine, fatty amide polyoxyethylene 22 parts of ether, 11 parts of xanthan gum, 14 parts of polyethylene glycol, 13 parts of sodium hypochlorite, 30 parts of urea, 10 parts of carboxymethyl cellulose, and 12 parts of potassium chloride.

[0029] The preparation method of above-mentioned soaking stick comprises the steps:

[0030] (1) Import lauryl amidopropyl hydroxysultaine, lauryl dimethyl betaine, and fatty amide polyoxyethylene ether into the container according to the proportion, stir until uniformly mixed, and heat to 55°C;

[0031] (2) Add xanthan gum, polyethylene glycol, sodium hypochlorite, urea, carboxymethyl cellulose, and potassium chloride, stir until evenly mixed, and heat up to 75°C until the material is dried;

[0032] (3) After the mixed material is cooled ...

Embodiment 3

[0035] The bubble discharge sticks of Example 1 and Example 2 were placed in the 70g / L salinity solution, and condensate oil was added to carry out the anti-condensate oil performance test, wherein the liquid carrying capacity of the bubble discharge stick of Example 1 It has reached more than 120ml, and the liquid carrying capacity of the bubble discharge stick in Example 2 has reached more than 130ml, far higher than the 15ml required by the industry standard, showing good anti-condensation oil performance.

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Abstract

The invention belongs to the technical field of natural gas extraction, and particularly relates to a floating type foam scrubbing rod for gas production of oil and gas field and a preparation method of the floating type foam scrubbing rod. The foam scrubbing rod comprises the following components in parts by weight: 25-35 parts of a zwitterionic surfactant, 15-25 parts of a nonionic surfactant, 6-12 parts of xanthan gum, 10-15 parts of polyethylene glycol, 7-15 parts of sodium hypochlorite, 20-30 parts of urea, 7-12 parts of an adhesive and 8-14 parts of water-soluble solid salt. The preparation method comprises the following steps: mixing the zwitterionic surfactant and the nonionic surfactant, and conducting heating; adding xanthan gum, polyethylene glycol, sodium hypochlorite, urea, an adhesive and a water-soluble solid salt, and conducting heating and drying; and after cooling, pressing the mixed material under 6-8Mpa to obtain the floating type foam scrubbing rod. The component formula of the foam scrubbing rod is optimized, the foaming, foam stabilizing and foam carrying capacities are improved, and the foam scrubbing rod is suitable for foam drainage of a gas well with high gas condensate content and high mineralization degree.

Description

technical field [0001] The invention belongs to the technical field of natural gas exploitation, and in particular relates to a floating foam row rod for gas exploitation in oil and gas fields and a preparation method thereof. Background technique [0002] With the extension of oil and gas well development time, due to the reduction of formation pressure, the advancement of edge and bottom water, fracturing, acidification and other operational measures, fluid accumulation will occur at the bottom of the well and in the wellbore, resulting in a continuous decline in gas well production, and even water flooded wells Phenomenon. In response to this phenomenon, drainage and gas collection technology must be implemented in time to solve the problem of gas well drainage. Among them, the foam drainage gas recovery technology has attracted more and more attention due to its advantages of convenient construction, simple equipment, low cost, wide range of applicable well depths, quic...

Claims

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Application Information

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IPC IPC(8): C09K8/584C09K8/60C09K8/90C09K8/92
CPCC09K8/584C09K8/602C09K8/604C09K8/905C09K8/92
Inventor 李佳欣张宁波袁航程旭杨修直周成香卓亦然程泽虎徐海涛王祁邱建玲徐壮举刘波徐涛
Owner CHINA PETROLEUM & CHEM CORP
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