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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 effects of improving foaming effect, reducing price and simple foaming method

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

[0026] This example is used to illustrate the oil-based foaming method of the present invention.

[0027] (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 white oil, add 2 grams of ethylene-propylene-diene copolymer (EPDM) to fully dissolve to form a foamable white oil.

[0028] (2) Using sand core dry air bubbling method, install sand core bubbler at the bottom of the measuring cylinder, pour the prepared foamable white oil into the measuring cylinder, start bubbling, the foam volume increases, when the upper foam burst 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...

Embodiment 2

[0030] This example is used to illustrate the oil-based foaming method of the present invention.

[0031] (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 the prepared foaming agent in 100ml of white oil, add 1 gram of ethylene propylene copolymer (OCP) to fully dissolve to form foamable white oil.

[0032](2) Using sand core dry air bubbling method, install sand core bubbler at the bottom of the measuring cylinder, pour the prepared foamable white oil into the measuring cylinder, start bubbling, the foam volume increases, when the upper foam burst 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 i...

Embodiment 3

[0034] This example is used to illustrate the oil-based foaming method of the present invention.

[0035] (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 of white oil, add 2 grams of hydrogenated styrene diene copolymer (HSD) to fully dissolve to form a foamable white oil.

[0036] (2) Using sand core dry air bubbling method, install sand core bubbler at the bottom of the measuring cylinder, pour the prepared foamable white oil into the measuring cylinder, start bubbling, the foam volume increases, when the upper foam burst 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 ...

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PUM

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Abstract

The invention relates to an oil-based foaming method. The method is as below: mixing a foaming agent composition with oil and foaming the obtained mixture. The oil is white oil, and a bubbling gas source during the foaming process is air; the foaming agent composition contains a foaming agent and a foam stabilizer; the foaming agent contains a surfactant A, a surfactant B, a compatibilizer and a solvent; the surfactant A is an anionic surfactant, and the surfactant B is a betaine type surfactant; the compatibilizer is an ether co-soluble with water and oil; and the solvent is alcohol. The method of the invention has the advantages of good foaming effect and low cost, and is convenient in field operation.

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 祝纶宇方昭胡晓娜张文龙伊卓刘希杜超
Owner CHINA PETROLEUM & CHEM CORP