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

Low-temperature-resistant fracturing fluid for oil exploitation and preparation method of fracturing fluid

A technology for oil exploitation and low temperature resistance, which is applied in the direction of chemical instruments and methods, drilling compositions, etc., and can solve problems such as difficult fracturing, poor low temperature resistance of fracturing fluid, and rapid decrease in sand-carrying capacity of fracturing fluid, etc. , to achieve excellent low temperature resistance, good shear resistance, and suitable for large-scale application

Inactive Publication Date: 2015-08-26
无棣华信石油技术服务有限公司
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The ability to suspend and carry fracturing sand in the fracturing fluid is its basic requirement. However, although the existing fracturing fluid has a certain ability to carry fracturing sand, the low temperature resistance of the fracturing fluid is poor. temperature, the sand-carrying capacity of the fracturing fluid tends to decrease rapidly, causing certain difficulties for fracturing

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
  • Low-temperature-resistant fracturing fluid for oil exploitation and preparation method of fracturing fluid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The low-temperature resistant fracturing fluid used for petroleum development includes the following components in parts by weight: 0.5 parts of cellulase, 2 parts of acrylamide, 1 part of triethanolamine sulfosalicylate, 1.5 parts of coumarin, guar 0.2 parts of glue, 0.6 parts of bactericide, 0.2 parts of polyacrylamide, 2 parts of sodium bicarbonate, 1 part of sodium citrate, 1 part of polyoxypropylene polyoxyethylene propylene glycol ether, 2 parts of ethanol, and 150 parts of water, wherein the sterilization The agent is rosinamine.

[0026] The preparation method of low-temperature-resistant fracturing fluid used for petroleum exploitation comprises the steps of:

[0027] Step 1: Mix and stir cellulase, acrylamide and triethanolamine sulfosalicylate evenly, raise the temperature to 40°C, then add coumarin and guar gum in sequence, and stir evenly to obtain mixture A;

[0028] Step 2, mixing and stirring the fungicide, polyacrylamide, sodium bicarbonate, sodium cit...

Embodiment 2

[0032] Low-temperature resistant fracturing fluid for petroleum development, including the following components in parts by weight: 2 parts of cellulase, 8 parts of acrylamide, 5 parts of triethanolamine sulfosalicylate, 2 parts of coumarin, guar 1.8 parts of glue, 2.5 parts of bactericide, 0.8 parts of polyacrylamide, 5 parts of sodium bicarbonate, 3 parts of sodium citrate, 5 parts of polyoxypropylene polyoxyethylene propylene glycol ether, 10 parts of ethanol, and 180 parts of water, wherein the sterilization The agent is rosinamine.

[0033] The preparation method of low-temperature-resistant fracturing fluid used for petroleum exploitation comprises the steps of:

[0034] Step 1: Mix and stir cellulase, acrylamide and triethanolamine sulfosalicylate evenly, raise the temperature to 50°C, then add coumarin and guar gum in sequence, and stir evenly to obtain mixture A;

[0035] Step 2, mixing and stirring the fungicide, polyacrylamide, sodium bicarbonate, sodium citrate, p...

Embodiment 3

[0039] The low-temperature resistant fracturing fluid used for petroleum development includes the following components in parts by weight: 1 part of cellulase, 5 parts of acrylamide, 2 parts of triethanolamine sulfosalicylate, 1.6 parts of coumarin, guar 1 part of glue, 1.8 parts of fungicide, 0.5 part of polyacrylamide, 3 parts of sodium bicarbonate, 2 parts of sodium citrate, 3 parts of polyoxypropylene polyoxyethylene propylene glycol ether, 5 parts of ethanol, and 170 parts of water, wherein the sterilization The agent is rosinamine.

[0040] The preparation method of low-temperature-resistant fracturing fluid used for petroleum exploitation comprises the steps of:

[0041] Step 1: Mix and stir cellulase, acrylamide and triethanolamine sulfosalicylate evenly, raise the temperature to 45°C, then add coumarin and guar gum in sequence, and stir evenly to obtain mixture A;

[0042] Step 2, mixing and stirring the fungicide, polyacrylamide, sodium bicarbonate, sodium citrate, ...

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 relates to a low-temperature-resistant fracturing fluid for oil exploitation and a preparation method of the fracturing fluid, and belongs to the technical field of reservoir fracturing improvement for an oil gas well. The fracturing fluid comprises components in parts by weight as follows: 0.5-2 parts of cellulase, 2-8 parts of acrylamide, 1-5 parts of sulfosalicylic acid triethanolamine ester, 1.5-2 parts of fenugreek gum, 0.2-1.8 parts of guar gum, 0.6-2.5 parts of a bactericide, 0.2-0.8 parts of polyacrylamide, 2-5 parts of sodium bicarbonate, 1-3 parts of sodium citrate, 1-5 parts of demulsifire N-220 series, 2-10 parts of ethanol and 150-180 parts of water. The low-temperature-resistant fracturing fluid has good compatibility with a formation core and a fluid, and facilitates formation fracture; the fracturing fluid has excellent low-temperature-resistant effect, still has good sand carrying capacity at a lower temperature, has good anti-shearing performance, can break gel after construction and flows back quickly.

Description

technical field [0001] The invention belongs to the technical field of fracturing reconstruction of oil and gas well reservoirs, and in particular relates to a low-temperature resistant fracturing fluid for petroleum development and a preparation method thereof. Background technique [0002] Fracturing is to use a high-pressure pump to inject fracturing fluid into the formation to expand the fractures in the formation to increase the permeability of the formation. Therefore, fracturing is one of the main measures for increasing production of oil and gas wells. The so-called fracturing fluid is the liquid used when fracturing measures are taken in order to obtain high yield during the mining of fluid ore. The main function of fracturing fluid is to transmit pressure, form formation fractures, and carry proppant into fractures. [0003] Fracturing fluid is a heterogeneous chemical system formed by a variety of additives according to a certain ratio. Currently, fracturing flui...

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): C09K8/68
CPCC09K8/68C09K8/602C09K8/882C09K8/905
Inventor 李瑞国
Owner 无棣华信石油技术服务有限公司
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