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Amphiphilic polymer heavy oil activator and its application

A technology of amphiphilic polymers and activators, applied in chemical instruments and methods, drilling compositions, etc., can solve the problems of difficult development of heavy oil reservoirs and high production costs, to reduce the viscosity of heavy oil and improve flow sexual effect

Active Publication Date: 2020-07-14
北京百特泰科企业管理中心(有限合伙)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] my country is rich in heavy oil reserves. However, due to factors such as high density, high viscosity, and poor fluidity of heavy oil, it is very difficult to develop heavy oil reservoirs and the production cost is high.

Method used

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  • Amphiphilic polymer heavy oil activator and its application
  • Amphiphilic polymer heavy oil activator and its application
  • Amphiphilic polymer heavy oil activator and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Synthesize amphiphilic polymer heavy oil activator 1 by the following method:

[0035] In the reaction system, the dendritic unsaturated functional monomer shown in comonomer acrylamide, sodium acrylate, maleic anhydride, dimethyl allyl dodecyl ammonium chloride and formula (III) accounts for the total reaction system quality The fraction is 28% by weight and the remainder is deionized water. The molar percentages of each comonomer in the total monomers are 77.5mol%, 15.5mol%, 3.7mol%, 2.8mol%, 0.5mol% in turn. Add comonomer to deionized water and stir until completely dissolved. The pH regulator sodium hydroxide was added to adjust the pH of the reaction solution to about 7.6, and then the temperature of the reaction system was lowered to 4° C., and the oxygen in the reaction system was removed by passing nitrogen gas for 60 minutes. Add the initiator azobisisobutylamidine hydrochloride (V50), ammonium persulfate and sodium bisulfite sequentially under nitrogen prote...

Embodiment 2

[0043] Synthesize amphiphilic polymer heavy oil activator 2 by following method:

[0044] In the reaction system, the dendritic unsaturated functional monomer shown in comonomer acrylamide, potassium acrylate, maleic anhydride, dimethyl allyl dodecyl ammonium chloride and formula (III) accounts for the total reaction system quality The fraction is 23 wt%, the rest is deionized water. The molar percentages of the comonomers in the total monomers are 66.5 mol%, 23.5 mol%, 5.5 mol%, 4.3 mol%, 0.2 mol% in turn. Add comonomer to deionized water and stir until completely dissolved. The pH regulator sodium carbonate was added to adjust the pH of the reaction solution to about 7.2, and then the temperature of the reaction system was lowered to 6° C., and the oxygen in the reaction system was removed by passing nitrogen gas for 60 minutes. Under nitrogen protection, the initiator azobisisobutylamidine hydrochloride (V50), sodium persulfate and sodium thiosulfate were sequentially add...

Embodiment 3

[0046] Synthesize amphiphilic polymer heavy oil activator 3 by following method:

[0047]In the reaction system, the dendritic unsaturated functional monomer shown in comonomer acrylamide, sodium acrylate, maleic anhydride, dimethyl allyl dodecyl ammonium chloride and formula (IV) accounts for the total reaction system quality The fraction is 22% by weight and the remainder is deionized water. The mole percentages of each comonomer in the total monomers are 81.5 mol%, 10.2 mol%, 4.3 mol%, 3.8 mol%, 0.2 mol% in turn. Add comonomer to deionized water and stir until completely dissolved. The pH regulator sodium hydroxide was added to adjust the pH of the reaction solution to about 8.5, and then the temperature of the reaction system was lowered to 5° C., and the oxygen in the reaction system was removed by passing nitrogen gas for 60 minutes. Under nitrogen protection, the initiator azobisisobutylamidine hydrochloride (V50), potassium persulfate and sodium thiosulfate were sequ...

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Abstract

The invention discloses an amphipathic high-molecular viscous oil activator and application thereof. A preparation method of the amphipathic high-molecular viscous oil activator comprises the following steps: carrying out copolymerization reaction on acrylamide, acrylic alkali metal salt, maleic anhydride, dimethyl allyl dodecyl ammonium chloride and a dendritic unsaturated functional monomer which is expressed as a formula (I) or a formula (II) through an aqueous solution free radical. After the amphipathic high-molecular viscous oil activator is mixed with viscous oil, the viscosity of the viscous oil can be obviously reduced; the amphipathic high-molecular viscous oil activator is applicable to the field of reinforced cold exploitation of the viscous oil or exploitation of auxiliary steam viscous oil. The formula (I) and the formula (II) are as shown in the description; in the formula (I) or the formula (II), R represents alkyl with 4-16 carbon atoms, and G represents Cl or Br.

Description

technical field [0001] The invention belongs to the technical field of petrochemical industry, and in particular relates to an amphiphilic polymer heavy oil activator and application thereof. Background technique [0002] my country is rich in heavy oil reserves. However, due to factors such as high density, high viscosity, and poor fluidity of heavy oil, the development of heavy oil reservoirs is very difficult and the production cost is high. [0003] One of the key issues to be solved in the production of heavy oil is how to improve the fluidity of heavy oil in formations and wellbores. At present, thermal oil recovery technologies such as steam flooding, steam huff and puff, and steam-assisted gravity drainage (SAGD) have been widely used, and have produced significant economic and social benefits. A large number of laboratory studies and field experiments have found that the chemical viscosity reduction method assisted steam extraction can further reduce the viscosity ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/56C08F220/06C08F222/06C08F226/02C08F220/34C08F290/06C08G73/02C09K8/588
CPCC08F220/56C08F290/06C08G73/028C08G73/0293C09K8/588C08F220/06C08F222/06C08F226/02C08F220/34
Inventor 高嵩刘光岩史学峰
Owner 北京百特泰科企业管理中心(有限合伙)
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