Preparation method of organic titanium cross-linking agent for polyhydroxy alcohol fracturing fluid

A polyhydric alcohol and fracturing fluid technology, applied in chemical instruments and methods, drilling compositions, etc., can solve the problem of limiting the popularization and application of organic titanium/polyhydric alcohol fracturing fluid system, affecting the use of fracturing fluid, delaying Long time and other problems, to achieve the effect of less variety, controllable delay time, and good temperature resistance

Active Publication Date: 2011-06-29
PETROCHINA CO LTD
View PDF2 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the commonly used cross-linking agents for fracturing fluids are mainly borax, organic boron, organic titanium, etc., but the cross-linking speed of borax is extremely fast, and the jelly formed by the organic boron/polyhydric alcohol fracturing fluid system is not temperature-resistant, which affects the fracturing fluid. usage of
Although the organic titanium crossl

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Place the three-necked flask equipped with magnetic stirring, reflux condenser, and thermometer on a magnetic stirring temperature-control electric heating mantle, add 1 g of sodium hydroxide, 10 g of glucose, 100 g of propylene glycol, and 10 g of tetrabutyl titanate into the three-necked flask; mix well , heated up to 110° C., and reacted for 5 hours under continuous stirring to obtain a golden yellow liquid which is the organic titanium crosslinking agent of polyhydric alcohol fracturing fluid.

Embodiment 2

[0023] Place the three-necked flask equipped with magnetic stirring, reflux condenser, and thermometer on the magnetic stirring temperature control electric heating mantle, add 5 g of ethylenediamine, 20 g of fructose, 100 g of propylene glycol, and 15 g of tetrabutyl titanate into the three-necked flask; mix well , heated up to 120° C., and reacted for 4 hours under continuous stirring to obtain a golden yellow liquid which is the organotitanium crosslinking agent of polyhydric alcohol fracturing fluid.

Embodiment 3

[0025] Place the three-necked flask equipped with magnetic stirring, reflux condenser, and thermometer on the magnetic stirring temperature control electric heating mantle, add 10g of trimethylamine, 30g of sucrose, 100g of ethylene glycol, and 15g of tetrabutyl titanate into the three-necked flask; mix well Afterwards, the temperature was raised to 130° C., and the reaction was continued for 3 hours under continuous stirring to obtain a golden yellow liquid which was the organotitanium crosslinking agent of the polyhydric alcohol fracturing fluid.

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 preparation method of an organic titanium cross-linking agent for polyhydroxy alcohol fracturing fluid. The preparation method comprises the following steps: adding alkali, sugar, divalent alcohol and tetrabutyl titanate into a reactor, uniformly mixing, raising temperature to 110-150 DEG C, keeping the temperature unchanged, performing reaction for 1-5 hours under continuous stirring, and getting golden yellow liquid which is the organic titanium cross-linking agent for the polyhydroxy alcohol fracturing fluid, wherein the alkali is sodium hydroxide, ethylenediamine, trimethylamine or triethanolamine; the sugar is monosaccharose or disaccharide, the monosaccharose is fructose or glucose, the disaccharide is sucrose, maltose or lactose; the divalent alcohol is ethylene glycol or propylene glycol; the weight ratio of the alkali to the sugar to the divalent alcohol is 0.01-0.2: 0.1-0.4: 1; and the weight ratio of the tetrabutyl titanate to the divalent alcoholis 0.1-0.2: 1. The cross-linking agent has the characteristics of strong sand carrying capability, good temperature resistance, low friction, adjustable delay time, low harm, excellent compatibility with the polyhydroxy alcohol fracturing fluid and the like.

Description

technical field [0001] The invention relates to a preparation method of an organic titanium crosslinking agent for polyhydric alcohol fracturing fluid, which is suitable for use in low-permeability oil and gas layer oil wells or natural gas well fracturing stimulation processes. Background technique [0002] In the prior art, polyhydric alcohol fracturing fluid is a new type of fracturing fluid, in which the molecular weight of the thickener is far lower than that of vegetable gum, and has high surface activity, which can endow the polyhydric alcohol fracturing fluid with gel breaking Thorough, easy flowback, low damage and other advantages, has a good application prospect. The role of the cross-linking agent in the fracturing fluid system is to make the polymer sol into a jelly, thereby greatly increasing the viscosity of the fracturing fluid, meeting the needs of fracturing and sand-carrying, and at the same time, it is the main factor determining the temperature resistanc...

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): C09K8/62
Inventor 吕海燕杨华徐永高李宪文赵文薛小佳刘静李小玲吕宝强
Owner PETROCHINA CO LTD
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