Supramolecular multi-copolymer type clean fracturing fluid

A multi-copolymer, clean fracturing fluid technology, applied in the field of oil field fracturing, can solve the problems of fracturing effect, high cost, poor stability, etc. Rheological curve without protrusion effect

Inactive Publication Date: 2014-06-25
四川安东油气工程技术服务有限公司
View PDF1 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, like many other water-based fracturing fluids, hydroxypropyl guar gum (HPGF) still has inevitable defects: first, it cannot quickly swell and hydrate, and the dissolution rate is slow, so it is difficult to solve the problem of construction scale and rapid gel breaking and return. The contradiction between the performance requirements of the fracturing fluid is eliminated; the second is that the vegetable glue fracturing fluid often has a lot of residue after the gel is broken, which is easy to block the filling layer of the fracture, causing secondary damage and affecting the fracturing effect; the third is that the plant glue Natural polymers such as gelatin cellulose have poo

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
  • Supramolecular multi-copolymer type clean fracturing fluid
  • Supramolecular multi-copolymer type clean fracturing fluid
  • Supramolecular multi-copolymer type clean fracturing fluid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A supramolecular multi-polymer copolymer type clean fracturing fluid is composed of the following components according to the corresponding mass percentages:

[0036]

[0037] Wherein, the molecular formula of supramolecular active polymer is as follows:

[0038]

[0039] In the formula, R is a C13-C21 linear or branched alkyl group, n is an integer of 3-6, and p is an integer of 2-4.

[0040] Supramolecular active polymer is obtained by the following steps in the present embodiment:

[0041] 1) Accurately weigh 30 grams of acrylamide, 5 grams of N-vinylpyrrolidone, 1 gram of cetyl acrylate, 2 grams of 2-acrylamide-2-methylpropanesulfonic acid (AMPS) and 0.5 grams of dodecyl Sodium benzenesulfonate was added to 200 grams of distilled water, and dissolved for later use;

[0042] 2) Accurately weigh 0.1 g of ammonium persulfate, add 25 g of distilled water, and dissolve for later use;

[0043] 3) Add the solution prepared in step 1) into a three-necked flask, put...

Embodiment 2

[0056] A supramolecular multi-polymer copolymer type clean fracturing fluid is composed of the following components according to the corresponding mass percentages:

[0057]

[0058] Wherein, the molecular formula of supramolecular active polymer is as follows:

[0059]

[0060] In the formula, R is a C13-C21 linear or branched alkyl group, n is an integer of 3-6, and p is an integer of 2-4.

[0061] Supramolecular active polymer is obtained by the following steps in the present embodiment:

[0062] 1) Accurately weigh 45 grams of acrylamide, 10 grams of N-vinylpyrrolidone, 2 grams of cetyl acrylate, 3 grams of 2-acrylamide-2-methylpropanesulfonic acid (AMPS) and 1 gram of dodecyl Sodium benzenesulfonate was added to 200 grams of distilled water, and dissolved for later use;

[0063] 2) Accurately weigh 0.2 g of ammonium persulfate, add it into 25 g of distilled water, and dissolve it for later use;

[0064] 3) Add the solution prepared in step 1) into a three-necked ...

Embodiment 3

[0076] A supramolecular multi-polymer copolymer type clean fracturing fluid is composed of the following components according to the corresponding mass percentages:

[0077]

[0078] Wherein, the molecular formula of supramolecular active polymer is as follows:

[0079]

[0080] In the formula, R is a C13-C21 linear or branched alkyl group, n is an integer of 3-6, and p is an integer of 2-4.

[0081] Supramolecular active polymer is obtained by the following steps in the present embodiment:

[0082] 1) Accurately weigh 40 grams of acrylamide, 8 grams of N-vinylpyrrolidone, 2 grams of cetyl acrylate, 3 grams of 2-acrylamide-2-methylpropanesulfonic acid (AMPS) and 1 gram of dodecyl Sodium benzenesulfonate was added to 200 grams of distilled water, and dissolved for later use;

[0083] 2) Accurately weigh 0.2 g of ammonium persulfate, add it into 25 g of distilled water, and dissolve it for later use;

[0084] 3) Add the solution prepared in step 1) into a three-necked f...

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

No PUM Login to view more

Abstract

The invention discloses a supramolecular multi-copolymer type clean fracturing fluid. The supramolecular multi-copolymer type clean fracturing fluid comprises the following components in percentage by mass: 0.3-1.0% of supramolecular active polymer, 0.3-1.0% of cross-linking agent, 1-2% of KCL and 96-98% of water, wherein the molecular formula of the supramolecular active polymer is shown in the specification, R is C13-C21 straight chain or branched chain alkyl, n is an integer of 3-6 and p is an integer of 2-4. The fracturing fluid disclosed by the invention has the characteristics of high-temperature resistance, safety and environmental friendliness.

Description

technical field [0001] The invention relates to a supramolecular multiple copolymer type clean fracturing fluid, which belongs to the technical field of oil field fracturing. Background technique [0002] At present, domestic oilfield hydraulic fracturing construction basically adopts polymer fracturing fluid technology, that is, guar gum and its derivatives used in water-based polymer fracturing fluid. It has been used in fracturing fluids for many years because of its good rheology control properties. It has many advantages such as good shear resistance, good thermal stability, and strong ability to control fluid loss, and is widely used at home and abroad. However, like many other water-based fracturing fluids, hydroxypropyl guar gum (HPGF) still has inevitable defects: first, it cannot quickly swell and hydrate, and the dissolution rate is slow, so it is difficult to solve the problem of construction scale and rapid gel breaking and return. The contradiction between th...

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): C09K8/68C08F220/56C08F226/10C08F220/18C08F220/58
CPCC08F220/56C09K8/665C09K8/685C09K8/882C09K8/887C08F226/10C08F220/18C08F220/585
Inventor 徐太平方也王能成李栓杨南胤钟锐
Owner 四川安东油气工程技术服务有限公司
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