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Temperature resistant water base fracturing fluid thickening agent and preparation thereof

A technology of thickener and base pressure, which is applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of complex preparation, high residue content of synthetic polymer thickeners, and poor temperature resistance. Achieve the effect of simple preparation process

Active Publication Date: 2009-07-08
CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This new type of liquid that can resist high temperatures without losing its effectiveness when applied through hydraulic drilling techniques was developed based on industry standards called ASTM D 5625. It consists mainly of two components - one made from pure chemicals or crude oil while another contains tiny particles like silica sand suspended therein. These small particles help keep it stable during use over time but they may be harmful if allowed out into our environment due to their potential negative impact upon human health. To make this product more effective, we have added these ingredients together afterward.

Problems solved by technology

Technological Problem: Current hydraulic fracture techniques involve adding expensive chemical agents like calcium trioxy borate (CBO) and polysulfonimides (PSS), resulting in increased costs and impurities during storage and transport processes. Therefore, an improved solution needs to develop a more effective and economical fractering liquid composition while maintaining desired properties over longer periods of operation.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: get 2-acrylamido-2-methyl-1-propanesulfonic acid of 20 weight parts and add the deionized water of 15 weight parts, then add the sodium hydroxide aqueous solution that weight fraction is 5% and neutralize to pH =3, then add 10 parts by weight of acrylamide, 0.1 parts by weight of complexing agent EDTA, and 0.01 parts by weight of chain transfer agent isopropanol, stir at a temperature of 30°C, and pass through N 2 After 30 minutes, 2 parts by weight of N-vinylpyrrolidone and 0.01 parts by weight of potassium persulfate were added and reacted for 12 hours to obtain a temperature-resistant water-based fracturing fluid thickener.

Embodiment 2

[0021] Embodiment 2: get 50 weight parts of 2-acrylamido-2-methyl-1-propanesulfonic acid and add 30 weight parts of deionized water, then add a weight fraction of 8% sodium hydroxide aqueous solution to neutralize to pH =7, then add 10 parts by weight of acrylamide, 0.5 parts by weight of complexing agent EDTA, and 0.1 parts by weight of chain transfer agent isopropanol, stir at a temperature of 45 ° C, and pass N 2 Add the N-vinylpyrrolidone of 5 weight parts after 30 minutes, the ammonium persulfate of 0.1 weight part, react 8 hours,

Embodiment 3

[0022] Embodiment 3: get 100 parts by weight of 2-acrylamido-2-methyl-1-propanesulfonic acid and add 50 parts by weight of deionized water, then add a 10% aqueous solution of sodium hydroxide to neutralize to pH =11, then add 10 parts by weight of acrylamide, the complexing agent EDTA of 1 part by weight, the chain transfer agent sodium benzoate of 1 part by weight, stir at a temperature of 60 ° C, and pass N 2 After 30 minutes, 8 parts by weight of N-vinylpyrrolidone and 1 part by weight of ammonium persulfate were added and reacted for 4 hours to obtain a temperature-resistant water-based fracturing fluid thickener.

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PUM

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Abstract

The invention relates to a temperature resistant water-base fracturing fluid thickening agent and a method for preparing the same. The thickening agent consists of acrylamide, 2-acrylamido-2-methyl-1-propane sulfonic acid, N-vinyl pyrrolidone, complexing agent EDTA, chain transfer agent, sodium hydroxide aqueous solution and deionized water. The thickening agent is prepared by copolymerizing industrial raw materials of the acrylamide, the 2-acrylamido-2-methyl-1-propane sulfonic acid and the N-vinyl pyrrolidone in a reactor provided with a stirrer and a thermometer. The preparation method is simple. The prepared temperature resistant water-base fracturing fluid thickening agent does not contain insoluble residues, and the thickening agent of which the mass percentage is 0.5 percent is cut continuously for 30 minutes under the condition of 170S and 95 DEG C so that the viscosity is kept over 65 percent.

Description

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Claims

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Application Information

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Owner CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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