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Oil-based foaming method

An oil-based, foaming agent technology, applied in the field of oil foaming, can solve the problems of poor foaming effect and high price, and achieve the effect of improving foaming effect, reducing price and facilitating on-site operation

Inactive Publication Date: 2017-04-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for oil-based foaming in order to overcome the defects of poor foaming effect and high price in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] This example is used to illustrate the oil-based foaming method of the present invention.

[0029] (1) disodium lauryl sulfosuccinate (LT-60), cocamidopropyl betaine (CAB-35), ethylene glycol butyl ether, isopropanol, and water in a mass ratio of 50:15: Mix at 10:5:20, take 1 gram of the prepared mixture in 100ml of palm oil, add 2 grams of ethylene-propylene-diene copolymer (EPDM) to fully dissolve to form foamable palm oil.

[0030] (2) Adopt sand core drying nitrogen bubbling method, install sand core bubbler at the bottom of the measuring cylinder, pour the foamable palm oil into the measuring cylinder, start bubbling, the foam volume increases, when the upper foam bursting speed and When the foam generation speed in the lower part is equal, the foam height tends to be stable. At this time, record the foam height as the foam volume (initial volume), stop bubbling, and record the time when the foam volume is reduced to half of the initial volume, which is recorded as...

Embodiment 2

[0032] This example is used to illustrate the oil-based foaming method of the present invention.

[0033](1) Disodium lauryl ether sulfosuccinate monoester (MES-30), lauryl amidopropyl betaine (LAB-30), butyl glycol ether, isopropanol, and water in a mass ratio of 40:20 : 10:6:20 mixing, take 1.5 grams of prepared foaming agent in 100ml palm oil, add 1 gram of ethylene propylene copolymer (OCP) to fully dissolve to form foamable palm oil.

[0034] (2) Adopt sand core drying nitrogen bubbling method, install sand core bubbler at the bottom of the measuring cylinder, pour the foamable palm oil into the measuring cylinder, start bubbling, the foam volume increases, when the upper foam bursting speed and When the foam generation speed in the lower part is equal, the foam height tends to be stable. At this time, record the foam height as the foam volume (initial volume), stop bubbling, and record the time when the foam volume is reduced to half of the initial volume, which is recor...

Embodiment 3

[0036] This example is used to illustrate the oil-based foaming method of the present invention.

[0037] (1) Dioctyl sodium sulfosuccinate (penetrant T), dodecyl dimethyl betaine (BS-12), butyl glycol ether, isopropanol, and water are mixed in a mass ratio of 45:10 :15:5:15 mixing, take 1 gram of the prepared mixture in 100ml palm oil, add 2 grams of hydrogenated styrene diene copolymer (HSD) to fully dissolve to form foamable palm oil.

[0038] (2) Adopt sand core drying nitrogen bubbling method, install sand core bubbler at the bottom of the measuring cylinder, pour the foamable palm oil into the measuring cylinder, start bubbling, the foam volume increases, when the upper foam bursting speed and When the foam generation speed in the lower part is equal, the foam height tends to be stable. At this time, record the foam height as the foam volume (initial volume), stop bubbling, and record the time when the foam volume is reduced to half of the initial volume, which is record...

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PUM

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Abstract

The invention relates to an oil-based foaming method. The method comprises the steps that a foaming agent composition and oil are mixed and then subjected to foaming treatment, wherein the oil is at least one of palm oil, castor oil and rap oil. A bubbling gas source in a foaming treatment process is nitrogen, the foaming agent composition contains a foaming agent and a foam stabilizing agent, the foaming agent contains a surfactant A, a surfactant B, a compatilizer and a solvent, the surfactant A is the anionic surfactant, the surfactant B is the betaine type surfactant, the compatilizer is ether codissolved with water and oil, and the solvent is alcohol. By means of the method, the foaming effect is good, the price is low, and on-site operation is convenient.

Description

technical field [0001] The invention relates to the field of oil foaming, in particular to an oil-based foaming method. Background technique [0002] With the increasing exploration and development of ultra-low pressure formations and mature oil and gas fields in the middle and late stages, it is particularly important to develop low-density drilling fluid technology. Foamy low-density drilling fluids represented by water-based foams emerged as the times require and have been widely used. However, due to problems such as shale hydration expansion, the usual water-based foam drilling fluid is not suitable for water-sensitive formations and cores. In "Research on Oil-based Foam Drilling Fluid Technology", Tan et al. used fluorocarbon surfactants or silicon-containing surfactants as foaming agents and polymer foam stabilizers to form a stable diesel-based foam system. Foaming treatment can be carried out on oil base, but due to the problem of its high price, the practical app...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/38
CPCC09K8/38
Inventor 祝纶宇胡晓娜张文龙伊卓刘希杜超方昭
Owner CHINA PETROLEUM & CHEM CORP