Novel inorganic fine particle enhanced foam system for oil and gas fields, and preparation method thereof

一种微细颗粒、泡沫体系的技术，应用在化学仪器和方法、钻孔的组合物等方向，能够解决经济可行性不强、二氧化硅纳米颗粒造价高昂、二氧化硅纳米颗粒用量高等问题，达到增产效果好、低地层伤害、骨架结构稳定的效果

Active Publication Date: 2016-01-13
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the amount of silica nanoparticles in the composite foam system is relatively high, and the cost of silica nanoparticles is high. At this stage, it is not economically feasible to put silica nanoparticles into oil and gas development projects

Method used

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  • Novel inorganic fine particle enhanced foam system for oil and gas fields, and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A novel inorganic fine particle reinforced foam system for oil and gas fields, including a gas phase and a liquid phase; the gas phase is nitrogen, and the mass percentage of the raw material components in the liquid phase is as follows:

[0042] 0.5wt% foaming agent, 1.0wt% new inorganic fine particles, and the balance is water;

[0043] The foaming agent is a compound system composed of camellia saponin and sodium lauroyl glutamate in a mass ratio of 6:1; the new inorganic fine particles are fine particles with a particle size of ≤2.5 μm captured and screened in the atmosphere .

[0044] The preparation method is as follows:

[0045] Add the foaming agent into 100mL water according to the proportion, stir to form a foaming agent solution, then add new inorganic fine particles, and stir on a magnetic stirrer for 15 minutes to obtain the foam base liquid. Using the Waring Blender method, 100 mL of the foam base liquid was stirred and foamed at a stirring speed of 7000...

Embodiment 2

[0047] A novel inorganic fine particle reinforced foam system for oil and gas fields, including a gas phase and a liquid phase, the gas phase is air, and the mass percentages of raw material components in the liquid phase are as follows:

[0048] 0.5wt% foaming agent, 1.0wt% new inorganic fine particles, and the balance is water;

[0049] The foaming agent is a compound system composed of camellia saponin and sodium lauroyl glutamate in a mass ratio of 6:1; the new inorganic fine particles are fine particles with a particle size of ≤2.5 μm captured and screened in the atmosphere .

[0050] The preparation method is as follows:

[0051] Add the foaming agent into 100mL water according to the proportion, stir to form a foaming agent solution, then add new inorganic fine particles, and stir on a magnetic stirrer for 15 minutes to obtain the foam base liquid. Using the Waring Blender method, 100 mL of the foam base liquid was stirred and foamed at a stirring speed of 7000 rpm fo...

Embodiment 3

[0053] A new type of inorganic fine particle reinforced foam system for oil and gas fields, including gas phase and liquid phase, the gas phase is carbon dioxide. The mass percent of raw material component in liquid phase is as follows:

[0054] 0.5wt% foaming agent, 1.0wt% new inorganic fine particles, and the balance is water;

[0055] The foaming agent is a compound system composed of camellia saponin and sodium lauroyl glutamate in a mass ratio of 6:1; the new inorganic fine particles are fine particles with a particle size of ≤2.5 μm captured and screened in the atmosphere .

[0056] The preparation method is as follows:

[0057] Add the surfactants in the foaming agent to 100mL water in sequence according to the proportion, stir to form a foaming agent solution, then add new inorganic fine particles, and stir on a magnetic stirrer for 15 minutes to obtain the foam base liquid. Using the Waring Blender method, 100 mL of the foam base liquid was stirred and foamed at a ...

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Abstract

The invention relates to a novel inorganic fine particle enhanced foam system for oil and gas fields, and a preparation method thereof. The enhanced foam system comprises a gas phase and a liquid phase; the gas phase is nitrogen, carbon dioxide or air; the liquid phase comprises 0.2-0.8wt% of a foaming agent, 0.5-2.0wt% of novel inorganic fine particles, and the balance of water; and the novel inorganic fine particles are fine particles with the particle size being not greater than 2.5[mu]m, trapped and screened from air. The invention also provides the preparation method of the foam system. The enhanced foam system can be used to benefit efficient exploitation of oil and gas resources, can change the novel inorganic fine particles into valuables, reduces pollution of the novel inorganic fine particles to air environment, and has the advantages of low cost of the raw materials, simple preparation process, low operation cost, good oil and gas yield increasing effect, and high economic benefit.

Description

technical field [0001] The invention relates to a novel inorganic fine particle reinforced foam system for oil and gas fields and a preparation method thereof, belonging to the technical field of oil and gas field development engineering. Background technique [0002] Foam fluid has been widely used in the field of oil and gas field development at home and abroad, and is evaluated as an intelligent fluid with high efficiency, environmental protection, low cost and low damage. The application of foam fluid runs through the entire process of oil and gas field development, from drilling fluid, completion fluid, fracturing fluid used in drilling engineering, to oil displacement agent, profile control agent, water shutoff agent, acidizing agent used in oil production engineering Agents, etc., as well as sand flushing fluid, well flushing fluid, etc. used in workover operations, foam fluids can be used, and have irreplaceable excellent effects on many low-permeability, low-pressur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/594C09K8/70C09K8/518C09K8/528C09K8/52C09K8/74
CPCC09K8/518C09K8/52C09K8/528C09K8/594C09K8/703C09K8/74C09K8/536C09K8/94C09K8/58C09K8/68
Inventor 李兆敏吕其超李宾飞李秉霖李松岩鹿腾孙乾徐亚杰
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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