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

Method of preparing acidity water base fracturing fluid by using acidity multiple-effect thickening agent

A thickener and acidic water technology, applied in chemical instruments and methods, drilling compositions, etc., can solve problems such as impact on fracturing fluid performance and complicated procedures, achieve and destroy crude oil emulsification, improve liquid quality, reduce The effect of transportation and packaging

Active Publication Date: 2012-01-04
BC P INC CHINA NAT PETROLEUM CORP +1
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Due to the presence of fracturing fluid thickeners and numerous additives in the above fracturing fluid, the on-site construction process is complicated, and the performance of the fracturing fluid will be affected to varying degrees due to the wrong addition or addition of certain additives

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
  • Method of preparing acidity water base fracturing fluid by using acidity multiple-effect thickening agent
  • Method of preparing acidity water base fracturing fluid by using acidity multiple-effect thickening agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Preparation of acidic multi-effect thickener: take the raw materials according to the following weight and mix and compound:

[0038] Acidic vegetable gum or acidic vegetable gum hydroxypropyl, hydroxyethyl, carboxymethylated derivatives 1000kg

[0039] Inorganic alkali 200kg

[0040] R1X 50kg

[0041] R2X 300kg

[0042] R3X 300kg

[0043] Inorganic or organic acid 200kg

[0044] Water 550kg

[0045] The substance after the chemical reaction is dried and pulverized to obtain the acidic multi-effect thickener; the R1 means that the molecular formula is substances, where m≤5, n≤5; R2 means that the molecular formula is substances, where m≤5; R3 means that the molecular formula is substances, where m≥2, n≥3; X refers to chlorine (Cl) or bromine (Br), and in this example, X refers to chlorine (Cl);

[0046] The acidic vegetable gum refers to one of guar gum, coriander gum, kale gum, cellulose, konjac gum, and quercetin bean gum. This example is guar gum.

[00...

Embodiment 2

[0049] Basically the same as Example 1, the difference is

[0050] Acidic vegetable gum or acidic vegetable gum hydroxypropyl, hydroxyethyl, carboxymethylated derivatives 1000kg

[0051] Inorganic alkali 10kg

[0052] R1X 10kg

[0053] R2X 10kg

[0054] R3X 10kg

[0055] Inorganic or organic acid 10kg

[0056] water 100kg

[0057] In this embodiment, X refers to bromine (Br); the acidic plant gum: coumarin is used; the inorganic base is calcium hydroxide, and the organic acid: oxalic acid is used.

Embodiment 3

[0059]Basically the same as Example 1, the difference is

[0060] Acidic vegetable gum or acidic vegetable gum hydroxypropyl, hydroxyethyl, carboxymethylated derivatives 1000kg

[0061] Inorganic alkali 300kg

[0062] R1X 100kg

[0063] R2X 500kg

[0064] R3X 500kg

[0065] Inorganic or organic acid 300kg

[0066] Water 1000kg

[0067] In this embodiment, X refers to bromine (Br); the derivative of coumarin hydroxypropyl is used; the inorganic base is calcium hydroxide, and the organic acid: oxalic acid is 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
Login to View More

PUM

PropertyMeasurementUnit
Surface tensionaaaaaaaaaa
Login to View More

Abstract

The invention relates to an acidity water base fracturing fluid which is prepared by an acidity multiple-effect thickening agent for fracturing, wherein the acidity multiple-effect thickening agent is obtained by carrying out chemical stem grafting reaction on carboxymethyl derivatives of vegetable gelatins such as guar gum, sesbania glue, tonka-bean glue and the like. The acidity water base fracturing fluid prepared by using the acidity multiple-effect thickening agent can meet the using requirement without the addition of a bactericide, a clay stabilizing agent, a surface active agent, a demulsifying agent and a foaming agent. Under the condition that each performance index of the fracturing fluid is comparative to that of the traditional fracturing liquid, the method has the advantages of enabling operating working procedures to be simplified, being beneficial to the increasing of the quality of fluid and reducing conditions needed for monitoring and the construction procedure and time.

Description

technical field [0001] The invention relates to a method for preparing an acidic water-based fracturing fluid used in the fracturing stimulation process of an oil well or a natural gas well. In particular, it relates to a method for preparing acidic water-based fracturing fluid by using an acidic multi-effect thickener. Background technique [0002] In the existing hydraulic fracturing technology for oil and gas wells, plant gums and their related chemically modified derivatives are used as thickeners for fracturing fluids, occupying a dominant position. Such plant gums mainly include: guar gum, coumarin gum, kale gum, cellulose, konjac gum and chemically modified derivatives. [0003] In addition to the above-mentioned vegetable gum thickeners, relevant additives must be added to the fracturing fluid in order to improve the overall performance of the fracturing fluid and reduce the damage of the fracturing fluid to oil and gas reservoirs. [0004] The additives that must ...

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
Inventor 孙虎刘国良张冕廖乐军韩文哲李婧赵文钢吕莉郭伟林
Owner BC P INC CHINA NAT PETROLEUM 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