Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Anti-polymer adsorbent and preparation method thereof

A polymer and adsorbent technology, applied in the field of anti-polymer adsorbent and its preparation, can solve the problems of poor anti-adsorption effect, large amount of addition, short validity period, etc., and achieve strong adhesion, strong film-forming property and long validity period Effect

Active Publication Date: 2021-01-05
CHINA PETROLEUM & CHEM CORP +1
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commonly used sacrificial agents are mainly inorganic and organic. Inorganic sacrificial agents are seldom used because they are easy to react with the formation to produce precipitation and block the formation.
Among the organic sacrificial agents, the research results related to the prevention of HAPM adsorption mainly include lignosulfonate and its modified products, and hydrophobic association polymers, etc., but due to the influence of formation fluid and the characteristics of their own structure , there are defects such as poor anti-adsorption effect, short validity period, and large amount of addition

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
  • Anti-polymer adsorbent and preparation method thereof
  • Anti-polymer adsorbent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1: preparation anti-polymer adsorbent

[0035] The raw materials are as follows: bentonite nanoparticles 2.25g; OP-10, 1.5g; epoxy resin E-44, 20g; acrylic acid 5g, butyl acrylate 10g; styrene 6g; ammonium persulfate 0.6g; Ammonium chloride 10g; Aminopropyltriethoxysilane 5g.

[0036] The preparation method is as follows:

[0037] (1) Nanoparticles are placed in water to obtain 150 g of nanoparticle aqueous dispersions;

[0038] (2) adding the OP surfactant to the aqueous nanoparticle dispersion to obtain an aqueous surfactant solution;

[0039] (3) epoxy resin, acrylic acid monomer and styrene are added in surfactant aqueous solution, disperse 30 minutes with high-speed dispersing emulsifying machine, and stirring speed is 3000 rev / mins, obtains pre-emulsion;

[0040] (4) ammonium persulfate is mixed with the ammonium persulfate aqueous solution that mass concentration is 10%;

[0041] Take 1 / 4 of the pre-emulsion, heat it to 80°C and keep it warm, add 1...

Embodiment 2

[0046] Embodiment 2: preparation anti-polymer adsorbent

[0047]The raw materials are as follows: hectorite nanoparticles 3 g; OP-13, 1.5 g; epoxy resin E-44, 20 g; methacrylic acid 5 g, butyl acrylate 10 g; styrene 6 g; ammonium persulfate 0.6 g; Trimethylammonium chloride 12g; Aminopropyltriethoxysilane 5g.

[0048] The preparation method is the same as in Example 1.

[0049] Take the anti-polymer adsorbent prepared above, and measure its wetting angle to be 65°, which can spread rapidly on the surface of sand grains.

[0050] Add polyacrylamide to the quartz sand soaked in the above-mentioned anti-polymer adsorbent, and measure the static adsorption amount of polyacrylamide on the surface of quartz sand to be 0.45mg / L (the static adsorption of polyacrylamide on the surface of untreated quartz sand The amount is 0.8mg / L).

[0051] Take a certain amount of the above-mentioned anti-polymer adsorbent, dilute it to a concentration of 1000mg / L with Shengli brine type II (salin...

Embodiment 3

[0052] Embodiment 3: preparation anti-polymer adsorbent

[0053] The raw materials are as follows: silica nanoparticles 3.6 g; OP-15, 2.0 g; epoxy resin E-44, 30 g; methacrylic acid 10 g, methyl acrylate 15 g; styrene 10 g; ammonium persulfate 1.0 g; dodecane Trimethyl ammonium chloride 15g; Aminopropyltriethoxysilane 5g.

[0054] The preparation method is the same as in Example 1.

[0055] Take the anti-polymer adsorbent prepared above, and measure its wetting angle to be 66°, which can spread rapidly on the surface of sand grains.

[0056] Add polyacrylamide to the quartz sand soaked in the above-mentioned anti-polymer adsorbent, and measure the static adsorption amount of polyacrylamide on the surface of quartz sand to be 0.47mg / L (the static adsorption of polyacrylamide on the surface of untreated quartz sand The amount is 0.8mg / L).

[0057] Take a certain amount of the above-mentioned anti-polymer adsorbent, dilute it to a concentration of 1000mg / L with Shengli brine t...

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
Static adsorption capacityaaaaaaaaaa
Static adsorption capacityaaaaaaaaaa
Static adsorption capacityaaaaaaaaaa
Login to View More

Abstract

The invention discloses an anti-polymer adsorbent which is prepared from the following raw materials in parts by weight: 0.75-4 parts of nanoparticles, 1.5-2.0 parts of an OP surfactant, 20-30 parts of epoxy resin, 10-25 parts of an acrylic monomer, 5-10 parts of styrene, 0.5-1.2 parts of an initiator, 10-20 parts of quaternary ammonium salt and 5-10 parts of a coupling agent. The nanoparticles are selected from any one or more than two of bentonite, hectorite, silicon dioxide and positive electricity glue. The anti-polymer adsorbent can be quickly adsorbed on the surface of quartz sand to form a layer of polymer film, and adsorption of a polymer on the surface of the quartz sand is prevented, so that the additional pressure difference of a near-well filling layer is reduced, and the flowconductivity of the near-well filling layer is improved. The anti-polymer adsorbent disclosed by the invention has the advantages of good salt resistance and scouring resistance, long validity period,high permeability recovery rate of a filling layer and the like.

Description

technical field [0001] The invention relates to an anti-polymer adsorbent and a preparation method thereof, and relates to the technical field of preventing polymer from being adsorbed in formations during petroleum exploitation. Background technique [0002] The reserves of unconsolidated sandstone reservoirs account for about one-third of the total reserves. Due to the weak rock cementation strength of this type of reservoirs, especially in the middle and late stages of development, the long-term water injection and oil displacement medium injection development will reduce the cementation strength of the formation. , rocks are prone to damage and sand production. [0003] The commonly used sand control method is to build a gravel packing sand control barrier in the near wellbore area of ​​the oil well to prevent formation sand production. However, during the polymer injection development process, the polymer displaces crude oil into the area near the wellbore, absorbs on ...

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): C08F283/10C08F212/08C08F220/06C08F220/14C08F220/18C09K8/588
CPCC08F283/10C09K8/588C09K2208/10C08F212/08C08F220/06C08F220/14
Inventor 王增林贾庆升李常友姜静武明鸣宋清新赵益忠李鹏魏芳陈雪
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com