Low-water-content oil-proof foaming agent

A technology of low water content and foaming agent, which is applied in the fields of gas field foam drainage agent and oil-resistant low water content foaming agent. To achieve the effect of enhancing the ability of anti-condensate oil, the fluctuation of foam water content is small, and the strength of membrane is enhanced

Inactive Publication Date: 2017-05-31
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For gas wells with low pressure, small water volume, and condensate oil, ordinary foaming agents have a high water content, and the foam wall bears a large pulling force of droplets, which is easy to cause foam rupture. Continuously slipping droplets increase the load of the gas well and gradually slow down the gas flow rate. , making it difficult to produce continuously with liquid in the

Method used

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  • Low-water-content oil-proof foaming agent
  • Low-water-content oil-proof foaming agent
  • Low-water-content oil-proof foaming agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The anti-oil and low water content foaming agent in this implementation is composed of the following components: 30% of modified oil-spotted fruit essence, 40% of fatty alcohol polyoxyethylene ether AEO9, 15% of polylauroyl diethanolamine, polydimethylsiloxane 15% alkanes, that is, the compounding ratio of blowing agent components is 6:8:3:3.

Embodiment 2

[0032] The anti-oil and low water content foaming agent of this embodiment is composed of the following components: 35% of modified oleracea essence, 35% of fatty alcohol polyoxyethylene ether AEO9, polylauroyldiethanolamine 20, polydimethylsiloxane 10% alkanes, that is, the compounding ratio of foaming agent components is 7:7:4:2.

Embodiment 3

[0034] The anti-oil and low water content foaming agent of this embodiment is composed of the following components: 40% of the essence of modified oleracea, 35% of fatty alcohol polyoxyethylene ether AEO9, 30% of polylauroyl diethanolamine, polydimethylsiloxane 10% oxane, that is, the compounding ratio of foaming agent components is 8:7:3:2.

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Abstract

The invention discloses a low-water-content oil-proof foaming agent. The foaming agent is composed of, by mass, 30-50% of modified sapindus mukorossi essence, 20-40% of fatty alcohol polyoxyethylene ether, 15-30% of polylauryl diethanolamine, and 5-15% of polydimethylsiloxane. The anti-mineralization capacity of the low-water-content oil-proof foaming agent reaches 200 g/L, the condensate oil resistance reaches 30%, the temperature resistance is up to 90 DEG C, the foam moisture content is 1.16%, when the content of oil condensates is 30%, the foaming capacity can reach 150 mm, the liquid carrying rate is 68%, the optimum use concentration is 0.3-0.5%, and the foam scrubbing success rate in a field test reaches 90% or above. The low-water-content oil-proof foaming agent has no toxins, is easy to degrade, does not cause pollution to the environment, can be compatible with methyl alcohol, corrosion inhibitor and other agents, does not chemically react with gas or liquid components, does not increase the toxicity of gas or combustion products, and does not corrode equipment or pipes.

Description

[0001] 【Technical field】 [0002] The invention relates to an oil-resisting foaming agent with low water content, which is a gas field foam drainage agent and belongs to the technical field of oil and gas fields. [0003] 【Background technique】 [0004] During the development of the gas field, the formation energy of the gas well itself gradually decreases. Due to the influence of formation water and condensed water in the natural gas, the self-spraying ability of the gas well is weakened, and the liquid-carrying energy of the gas well is getting worse and worse. When the gas phase cannot provide enough energy for continuous The leakage of wellbore fluid will often cause liquid accumulation in the wellbore of the gas well, affecting the normal production of the gas well. Foam drainage gas recovery technology is a production-aiding technology researched for the development of gas wells in water-producing gas reservoirs. It has the characteristics of less investment, low cost, an...

Claims

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Application Information

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IPC IPC(8): C09K8/584
CPCC09K8/584
Inventor 杨亚聪刘双全白晓弘田伟贾友亮惠艳妮崔丽春韩强辉李耀德
Owner PETROCHINA CO LTD
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