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

Polyacrylamide-containing expansion material composition, self-suspending proppant, and preparation method and application of self-suspending proppant

A polyacrylamide and swelling material technology, which is applied in drilling compositions, chemical instruments and methods, and earth-moving drilling and mining, etc., can solve the problems of formation pollution, plugging of oil-producing pores, and difficulty in transporting fracturing fluids, reducing the The effect of contamination, viscosity reduction, and transportation difficulty reduction

Inactive Publication Date: 2017-07-07
BEIJING RECHSAND SCI & TECH GRP
View PDF4 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a polyacrylamide-containing swelling material composition, a self-suspending proppant and its preparation method and application. The composition can be applied to the preparation of a self-suspending support with a low relative density that can be suspended in clear water In order to solve the technical problem that high-viscosity fracturing fluid is needed to suspend proppant particles in the prior art, and high-viscosity fracturing fluid causes difficulty in fracturing fluid transportation, it can also solve the clogging of polymer compounds added in fracturing fluid The technical problem of oil-exit pores and pollution to the formation

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
  • Polyacrylamide-containing expansion material composition, self-suspending proppant, and preparation method and application of self-suspending proppant
  • Polyacrylamide-containing expansion material composition, self-suspending proppant, and preparation method and application of self-suspending proppant

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0027] The present invention also provides the preparation method of above-mentioned self-suspending proppant, and this method comprises the following steps:

[0028] (1) Disperse and mix the proppant body, binder and curing agent uniformly at the first temperature to obtain granular aggregate with binder and / or curing agent attached, wherein, relative to 100 parts by weight of proppant agent body, the amount of the binder is 0.1-15 parts by weight, and the amount of the curing agent is 0.001-1.5 parts by weight;

[0029] (2) Disperse and mix the granular aggregate and the polyacrylamide-containing expansion material composition at a second temperature so that the expansion material composition is coated on the granular aggregate to obtain a granular The self-suspending proppant of the present invention, wherein, relative to 100 parts by weight of the proppant body, the amount of the expansion material composition is 0.1-15 parts by weight.

[0030] The preparation method of ...

Embodiment 1

[0037] This example is used to illustrate the expansion material composition of the present invention and the preparation method and self-suspension proppant prepared from the expansion material composition.

[0038] The expansion material composition in this embodiment is 100 parts by weight of polyacrylamide (weight average molecular weight: 3 million) and 0.1 part by weight of fructooligosaccharide (purchased from Shanghai Emmons Chemical Technology Co., Ltd.).

[0039] (1) Using quartz sand (6-10 mesh in particle size) as raw material, after scrubbing and drying at 120°C for 5 hours, screen 6-40 mesh quartz sand as aggregate;

[0040] (2) Take 100 parts by weight of screened quartz sand, heat it to 240°C, add 0.1 part by weight of epoxy resin E-51 (618), 0.001 part by weight of curing agent phthalic anhydride, stir and mix evenly to obtain a binder package Covered granular aggregate;

[0041] (3) When the temperature of the above-mentioned binder-coated granular aggregate...

Embodiment 2

[0044] This example is used to illustrate the expansion material composition of the present invention and the preparation method and self-suspension proppant prepared from the expansion material composition.

[0045] The expansion material composition in this embodiment is 100 parts by weight of polyacrylamide (weight average molecular weight: 20 million) and 20 parts by weight of corn starch extract (purchased from Zhengzhou Longsheng Chemical Products Co., Ltd.).

[0046] (1) Take 100 parts by weight of ceramsite (particle size is 100-200 mesh), heat to 190 ° C, add 15 parts by weight of binder bisphenol A type unsaturated polyester 3301, add curing agent phthalic anhydride 0.1 parts by weight, stirred and mixed evenly to obtain binder-coated granular aggregate;

[0047] (2) When the temperature of the above-mentioned binder-coated granular aggregate drops to 80° C., add 15 parts by weight of the above-mentioned expansion material composition, and stir and mix evenly.

[00...

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
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a polyacrylamide-containing expansion material composition, a self-suspending proppant, and a preparation method and application of the self-suspending proppant. A proppant body is coated with the expansion material composition; the expansion material composition may swell fast in water to form a stable aqueous layer on the outer surface of proppant particles, the relative density of the proppant particles is reduced, and few organic molecules in the expansion material composition may expand in water, increasing the viscosity of the water, which may also facilitate the suspending of the proppant particles in water; in addition, the self-suspending proppant according to the invention may use water as a fracturing liquid, there is no need for preparing the fracturing liquid, the operation is convenient, equipment is simple, the use of organic solvents is avoided, the viscosity of the fracturing liquid may also be reduced, and conveying the fracturing liquid is less difficult; adding extra macromolecular compounds to the fracturing liquid is not required, the problem that macromolecular compounds enter underground with the fracturing liquid and block oil-gas production pores is avoided, and formation contamination due to the macromolecular compounds is also reduced.

Description

technical field [0001] The invention relates to the field of fluid mine mining, in particular to an expansion material composition containing polyacrylamide, a self-suspension proppant, a preparation method and application thereof. Background technique [0002] In the mining process of fluid mines such as oil and natural gas, it is often necessary to use fracturing technology, that is, a method that uses hydraulic action to form cracks in oil and gas layers, so it is also called hydraulic fracturing. Hydraulic fracturing is the use of surface high-pressure pumps to squeeze fracturing fluid with high viscosity into the oil layer through the wellbore. When the rate of injection of fracturing fluid exceeds the absorption capacity of the oil layer, a very high pressure will be formed on the oil layer at the bottom of the well. When this pressure exceeds the fracture pressure of the oil layer near the bottom of the well, the oil layer will be pushed open and fractures will be gen...

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): C09K8/80E21B43/267C08L33/26C08L5/02C08L5/00C08L3/02
CPCC09K8/805C08L33/26E21B43/267C08L5/02C08L5/00C08L3/02
Inventor 秦升益王中学
Owner BEIJING RECHSAND SCI & TECH GRP
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com