Viscosity reduction-oil displacement polymer for conventional thickened oil reservoir and preparation method thereof

A technology for oil-displacing polymers and heavy oil reservoirs, applied in the field of oil-displacing agents, can solve the problems of large surfactant dosage and increase the viscosity of the water phase, and achieve strong dispersion performance, increase the viscosity of the water phase, and good viscosity-increasing ability Effect

Active Publication Date: 2020-02-21
SOUTHWEST PETROLEUM UNIV
View PDF13 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide a viscosity-reducing-oil-displacement polymer for conventional heavy oil reservoirs and a preparation method thereof. The polymer solves the problem that the existing oil displacement system uses a large amount of surfactant. Strong viscous ability,

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Viscosity reduction-oil displacement polymer for conventional thickened oil reservoir and preparation method thereof
  • Viscosity reduction-oil displacement polymer for conventional thickened oil reservoir and preparation method thereof
  • Viscosity reduction-oil displacement polymer for conventional thickened oil reservoir and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0047] Example 1

[0048] A preparation method of viscosity-reducing-oil displacement polymer for conventional heavy oil reservoirs, comprising:

[0049] (S1) Reacting the branched monomer 3.0-generation polyamide-amine with maleic anhydride to obtain a modified branched monomer polyamide-amine, the reaction formula is as follows:

[0050]

[0051] Specifically, the branched monomer 3.0-generation polyamide-amine and the maleic anhydride were in a molar ratio of 1:8, and 30.3g of the branched monomer 3.0-generation polyamide-amine was added to 60.0g of N,N-dimethyl Stir and dissolve completely in methyl formamide; take 7.8 g of maleic anhydride and dissolve in 30.0 g of N,N-dimethylformamide, stir and dissolve completely.

[0052] Place the reaction vessel in an ice salt bath (below 10°C), slowly add the 3.0-generation polyamide-amine solution dropwise to the maleic anhydride solution, while passing inert gas nitrogen to the reaction liquid system temperature during the dropwise addit...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Apparent viscosityaaaaaaaaaa
Viscosityaaaaaaaaaa
Apparent viscosityaaaaaaaaaa
Login to view more

Abstract

The invention discloses a viscosity reduction-oil displacement polymer for a conventional thickened oil reservoir and a preparation method thereof. The viscosity reduction-oil displacement polymer hasa monomer with a structure as shown in a formula (A). In the formula (A), R is branched monomer 3.0-generation polyamide-amine, and n is in a range of 15-25; a, b, c, d and e are the mass percentagesof monomers in the polymer; and on the basis of a total mass percentage of 100%, a is 0.1%-0.5%, b is 45%-65%, c is 0.2%-5.0%, d is 15%-30%, and e is 16%-25%. The polymer disclosed by the invention is high in tackifying capacity; and the recovery degree and the injection property of the polymer are superior to the recovery degree and the injection property of a compound oil displacement system and partially-hydrolyzed polyacrylamide, so the purposes of reducing the viscosity of thickened oil, increasing the viscosity of a water phase and improving the recovery degree of a conventional thickened oil reservoir are achieved, and the effects of multiple purposes and synergism of the viscosity reduction-oil displacement polymer are achieved.

Description

technical field [0001] The invention relates to an oil displacement agent used in conventional heavy oil reservoirs, in particular to a viscosity reducing-oil displacement polymer used in conventional heavy oil reservoirs and a preparation method thereof. Background technique [0002] With the increase of oil consumption, the production and supply of conventional oil resources in the world is tight, but the heavy oil resources are abundant, which is an important part of the production and development of oil resources. Bohai Oilfield, based on its many years of exploration and practice experience, based on the heavy oil classification standards of China's onshore oilfields, combined with the viscosity distribution range of Bohai heavy oil, further subdivides heavy oil according to viscosity and development mode: conventional heavy oil and unconventional heavy oil . Among them, conventional heavy oil can be subdivided into: conventional type I heavy oil and conventional type ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C08F283/06C08F220/56C08F283/00C09K8/584
CPCC08F283/065C08F283/002C09K8/584C08F220/56
Inventor 施雷庭晋清磊朱诗杰汪士凯叶仲斌赵启明王欣悦谌茂
Owner SOUTHWEST PETROLEUM UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap