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Foam composition and preparation method of the same

A kind of composition, the technology of foaming agent

Inactive Publication Date: 2017-04-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One of the technical problems to be solved by the present invention is that the foam agent in the existing steam flooding oil recovery process has poor salt tolerance and the formed foam has a small sweep coefficient. A new foam agent composition is provided

Method used

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  • Foam composition and preparation method of the same
  • Foam composition and preparation method of the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The preparation of composition HF-1, preparation steps:

[0040] (1) Long-chain polyether nitrogen-containing compound (C 12 h 25 O(CHCH 3 CH 2 O) 3 (CH 2 CH 2 O) 7 CH 2 CH 2 N(CH 3 ) 2 C 3 h 6 OSO 3 ) synthesis and preparation:

[0041] Add 186.0 grams of dodecanol and 5.6 grams of potassium hydroxide to a pressure reactor equipped with a stirring device, and when heated to 80-90°C, open the vacuum system, dehydrate under high vacuum for 1 hour, and then replace with nitrogen for 3- 4 times, adjust the reaction temperature of the system to 150 ° C and slowly pass 179.9 grams of propylene oxide, control the pressure ≤ 0.60 MPa, lower the temperature to 90 ° C, remove low boilers in vacuum, continue to adjust the reaction temperature of the system to 150 ° C and slowly pass Inject 360.0 grams of ethylene oxide and control the pressure to ≤0.60MPa. After the reaction, neutralize and dehydrate after cooling to obtain C 12 h 25 O(CHCH 3 CH 2 O) 3 (CH 2...

Embodiment 2

[0048] The preparation of composition HF-2, preparation steps:

[0049] (1) Long-chain polyether nitrogen-containing compound (C 16 h 33 O(CHCH 3 CH 2 O) 10 (CH 2 CH 2 O) 20 CH 2 CH 2 N(C 2 h 5 )(C 3 h 7 O)CH 2 COO) synthesis and preparation:

[0050] Add 121 grams of cetyl alcohol and 3 grams of potassium hydroxide to a pressure reactor equipped with a stirring device, and when heated to 80-90°C, open the vacuum system, dehydrate under high vacuum for 1 hour, and then replace with nitrogen for 3- 4 times, adjust the reaction temperature of the system to 150 ° C and slowly pass 300 grams of propylene oxide, control the pressure ≤ 0.60 MPa, cool down to 90 ° C, remove the low boilers in vacuum, continue to adjust the reaction temperature of the system to 150 ° C and slowly pass Inject 500.0 grams of ethylene oxide, and control the pressure to ≤0.60MPa. After the reaction, neutralize and dehydrate after cooling to obtain C 16 h 33 O(CHCH 3 CH 2 O) 10 (CH 2 ...

Embodiment 3

[0057] The preparation of composition HF-3, preparation steps:

[0058] (1) Long-chain polyether nitrogen-containing compound (C 14 h 29 OCHCH 3 CH 2 O(CH 2 CH 2 O) 30 CH 2 CH 2 N(C 3 h 7 O) 2 C 5 h 10 SO 3 ) synthesis and preparation:

[0059] Add 107.0 grams of myristyl alcohol and 3.0 grams of potassium hydroxide to a pressure reactor equipped with a stirring device, and when heated to 80-90°C, open the vacuum system, dehydrate under high vacuum for 1 hour, and then replace with nitrogen for 3- 4 times, adjust the reaction temperature of the system to 150°C and slowly pass in 60 grams of propylene oxide, control the pressure ≤ 0.60MPa, cool down to 90°C, remove the low boilers in vacuum, continue to adjust the reaction temperature of the system to 150°C and slowly pass through Inject 700.0 grams of ethylene oxide and control the pressure to ≤0.60MPa. After the reaction, neutralize and dehydrate after cooling to obtain C 14 h 29 OCHCH 3 CH 2 O(CH 2 CH 2...

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Abstract

The invention relates to a foam composition and a preparation method of the same, mainly solving the current problems of foam agent subsiding when meeting with divalent ions and less capacity of foam sealing ,with oil production of nitrogen high salinity reservoir of steam flooding. The foam composition and the preparation method of the same based on the molecule of the compounds, comprising 1 potion of long-chain polyether compounds with nitrogen and 0.1-50 potions of the surfactant of long-chain diaryl-toluenesulfonate salt, wherein the long-chain polyether compounds with nitrogen has the general molecular formula as (I) and the the long-chain diaryl-toluenesulfonate salt has the general molecular formula as (II). The R1 refers to fatty group C10-C26; R4,R5 alkyl C1-C5 or anyone of alkyl; R6,R7 alkylidene C1-C5 or anyone of alkylidene; and Y selected from the technical scheme of the general molecular formula (I) where molecule in anionic groups is with electric neutrality. And the foam composition and the preparation method of the same solve the problems better and can also be applied to the nitrogen high salinity reservoir of steam flooding.

Description

technical field [0001] The invention relates to a foam agent composition and a preparation method, in particular to a foam agent composition and a preparation method for steam nitrogen foam composite flooding in high-salt oil reservoirs. Background technique [0002] my country is rich in heavy oil resources. Heavy oil has the characteristics of high viscosity and high density, which makes development more difficult and less effective. Steam flooding and steam huff and puff technology are currently the main means of developing heavy oil, but due to the difference in density and viscosity between steam and oil-water, steam overlaps flow and viscous fingering in the reservoir, and steam appears in reservoirs with severe heterogeneity. Channeling. [0003] Foam-assisted steam flooding is to add a foaming agent during steam injection. Foam is a compressible non-Newtonian fluid that seeps selectively in formations. Plug the high permeability zone, improve the injection profile...

Claims

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Application Information

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IPC IPC(8): C09K8/584C09K8/592E21B43/22
CPCC09K8/584C09K8/592E21B43/16
Inventor 何秀娟裘鋆何良好李应成沈之芹
Owner CHINA PETROLEUM & CHEM CORP
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