Salt-resistant and high-temperature-resistant foam discharge agent and method for preparing same

A technology of high temperature resistance and foaming agent, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problem of large amount of microbial fermentation liquid and surfactant, large amount of surfactant and microbial fermentation liquid, and environmental hazards and other issues, to achieve the effect of improving drainage and gas recovery efficiency, improving effective permeability, and improving environmental protection

Active Publication Date: 2018-08-07
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

[0007] The Chinese invention patent with the authorized notification number CN 103555309B discloses a water lock damage treatment agent based on biosurfactant. The water lock damage treatment agent includes the following components in mass percentage: microbial fermentation broth 30-70%, 1-5% of non-ionic surfactant, 0.5-1% of fluorocarbon surfactant, 5-8% of cationic surfactant, and the rest is distilled water, wherein the microbial fermentation liquid is the fermentation liquid of Pseudomonas aeruginosa; The water lock damage treatment agent disclosed in the patent can effectively prevent and eliminate water lock damage, but the amount of microbial fermentation liquid and surfactant is large, the cost is high, and it is easy to cause a certain impact on the environment
[0008] The invention patent with authorized notification number CN 103614131B discloses a biochemical anti-salt and high temperature oil displacement viscosity reducer and its preparation method. The oil displacement viscosity reducer disclosed in this patent includes the following components in mass percentage: microbial fermentation broth 30-85%, 0.5-5% of anionic surfactant, 0.5-10% of non-ionic surfactant, and the balance is distilled water; the microbial fermentation liquid is the fermentation liquid of Pseudomonas aeruginosa or Bacillus subtilis; The oil displacement viscosity reducer disclosed in this patent has high temperature resistance and salinity resistance, but the amount of surfactant and microbial fermentation liquid is too large, the cost is high, and it is harmful to the environment

Method used

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  • Salt-resistant and high-temperature-resistant foam discharge agent and method for preparing same
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  • Salt-resistant and high-temperature-resistant foam discharge agent and method for preparing same

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Embodiment 1

[0050] The anti-salt and anti-high temperature foaming agent of the present embodiment is composed of the following components in mass percentage: 0.2% of anion-nonionic surfactant composite system, 0.02% of Pseudomonas aeruginosa fermentation broth producing glycolipid biosurfactant %, the balance is water; wherein the anion-nonionic surfactant complex system consists of anionic surfactant sodium dodecylbenzenesulfonate and nonionic surfactant fatty alcohol polyoxyethylene ether AEO 9 according to the quality of 30:70 Than mixed to get.

[0051] The preparation method of the anti-salt and anti-high temperature foaming agent of the present embodiment comprises the following steps:

[0052] 1) Pseudomonas aeruginosa (Pseudomonas aeruginosa) CGMCC No.1.2464 was inoculated on LB solid medium, and cultured at 35°C for 3 days to form colonies; the LB solid medium was: agar powder 15g / L, peptone 12g / L, yeast powder 3g / L, NaCl 12g / L, add water to 1L, pH 7;

[0053] 2) The single b...

Embodiment 2

[0057] The anti-salt and anti-high temperature foaming agent of the present embodiment is composed of the following components in mass percentage: 0.3% of anion-nonionic surfactant composite system, 0.04% of Pseudomonas aeruginosa fermentation broth producing glycolipid biosurfactant %, the balance is water; wherein the anion-nonionic surfactant complex system is composed of anionic surfactant α-olefin sulfonate sodium and nonionic surfactant alkylphenol polyoxyethylene ether TX-40 according to the quality of 50:50 Than mixed to get.

[0058] The preparation method of the anti-salt and anti-high temperature foaming agent of the present embodiment comprises the following steps:

[0059] 1) Pseudomonas aeruginosa (Pseudomonas aeruginosa) CGMCC No.1.2464 was inoculated on LB solid medium, and cultured at 37°C for 2 days to form colonies; the LB solid medium was: agar powder 20g / L, peptone 8g / L L, yeast powder 5g / L, NaCl 8g / L, add water to 1L, pH 8;

[0060] 2) The single coloni...

Embodiment 3

[0064] The anti-salt and anti-high temperature foaming agent of the present embodiment is composed of the following components in mass percentage: 0.4% of anion-nonionic surfactant composite system, 0.06% of Pseudomonas aeruginosa fermentation broth producing glycolipid biosurfactant %, the balance is water; the anionic surfactant complex system is composed of anionic surfactant N, N-oleoyl methyl taurate sodium and nonionic surfactant polyoxyethylene amide 6503 according to the ratio of 70:30 The mass ratio is obtained by mixing with water.

[0065] The preparation method of the anti-salt and anti-high temperature foaming agent of the present embodiment comprises the following steps:

[0066] 1) Pseudomonas aeruginosa (Pseudomonas aeruginosa) CGMCC No.1.2464 was inoculated on LB solid medium, cultured at 42°C for 1d, and colonies were formed; the LB solid medium was: agar powder 18g / L, peptone 10g / L , Yeast powder 4g / L, NaCl 10g / L, add water to 1L, pH 7;

[0067]2) The sing...

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Abstract

The invention relates to a salt-resistant and high-temperature-resistant foam discharge agent and a method for preparing the same, and belongs to the technical field of oil and gas field development.The salt-resistant and high-temperature-resistant foam discharge agent comprises, by weight, 0.2-0.5% of anionic-nonionic surfactant composite systems, 0.02-0.08% of microbial fermentation liquor andthe balance water. The microbial fermentation liquor is glycolipid producing biological surfactant or lipopeptide producing biological surfactant microbial strain fermentation liquor. The salt-resistant and high-temperature-resistant foam discharge agent and the method have the advantages that the salt-resistant and high-temperature-resistant foam discharge agent has salt-resistant and high-temperature-resistant foaming, foam stabilizing and liquid carrying ability and is excellent in condensate oil resistance and methanol tolerance, and accordingly the salt-resistant and high-temperature-resistant foam discharge agent and the method are favorable for environmental protection and sustainable development of oil and gas fields.

Description

technical field [0001] The invention relates to a salt-resistant and high-temperature anti-foaming agent and a preparation method thereof, belonging to the technical field of oil and gas field development. Background technique [0002] A large number of liquid-producing gas wells in my country have the problems of high liquid-gas ratio and difficult liquid drainage. In order to prevent gas wells from forming hydrates, downhole throttling technology is often used, which reduces production pressure and further increases the difficulty of liquid drainage. [0003] The foam drainage process can produce various physical-chemical effects such as foam, dispersion, drag reduction, and washing during the vertical flow of gas-liquid two-phase mixing, reduce the "slip loss" in the wellbore, and improve the vertical liquid lifting capacity of the gas flow. To achieve the purpose of improving the efficiency of drainage and gas recovery; and in the liquid drainage process technology serie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/582C09K8/584
CPCC09K8/582C09K8/584
Inventor 刘岳龙周舰王锦昌张凌筱赵静周瑞立赵润冬梅洁袁胥谭苗张立强李璇陈旭
Owner PETROLEUM ENG TECH RES INST CHINA PETROLEUM & CHEM CORP NORTH CHINA OIL & GAS CO
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