Single-component full-function fracturing fluid additive and preparation process thereof

A preparation process, full-function technology, applied in drilling compositions, chemical instruments and methods, etc., can solve the problems of formation pollution, long dissolution time, poor functionality, etc.

Inactive Publication Date: 2021-06-15
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems existing in the prior art, the present invention provides a one-component full-function fracturing fluid additive and its preparation process. In order to change the existing dry powder additives that are easy to form dust, mix unevenly, dissolve for a long time, Disadvantages such as difficulty in liquid preparation, serious contamination of the formation by emulsion type fracturing fluid and oil dispersion type fracturing fluid, poor functionality, and complicated treatment of flowback fluid

Method used

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  • Single-component full-function fracturing fluid additive and preparation process thereof
  • Single-component full-function fracturing fluid additive and preparation process thereof
  • Single-component full-function fracturing fluid additive and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Preparation of single component full-function fracturing additives

[0050] (1) Crushing the polymer polymer thickener (hydrophobic acrylamide copolymer) using a multi-function electric pulverizer, using 140 mesh sieve "sieving", collecting the sieved polymer polymer, seal preservation;

[0051] (2) Clay stabilizer (KCl), loss filter (modified starch), bactericide (Cuso 4 ) Grinding, using 140 mesh sieve "sieving", collecting sieve, sealing;

[0052] (3) 42 g of ethylene glycol, 55 g of isopropanol, 2 g 1-butanol, 0.8 g 1-hexanol, 0.4 g 1-octanol added to the beaker, was heated to a constant temperature magnetic stirrer to 70 ° C for 3 min, The dispersant is dispersed evenly;

[0053] (4) Take 72 g of hydrophobic acrylamide copolymers, 1 g of potassium chloride, 0.5 g of nonionic fluoride-containing surfactants, 1 g modified starch, 2G sulfate sieved sample to the aqueous dispersant, stirring The rod is mixed well, loaded into a high-speed mixer sample bucket, stirred at hi...

Embodiment 2

[0057] Preparation of single component full-function fracturing additives

[0058] (1) Crushing the polymer polymer thickener (hydrophobic acrylamide copolymer) using a multi-function electric pulverizer, using 140 mesh sieve "sieving", collecting the sieved polymer polymer, seal preservation;

[0059] (2) 42 g of ethylene glycol, 55 g isopropanol, 2 g 1-butanol, 0.8 g 1-hexanol, 0.4 g 1-octanol added to the beaker, was heated to a constant temperature magnetic stirrer to 70 ° C for stirring for 3 min, The dispersant is dispersed evenly;

[0060] (3) Take 75 g of a hydrophobic acrylamide copolymer after sieve after sizing, in the aqueous dispersant, stirred well with stirring rods, loaded into a high-speed stirrer sample bucket, stirred at high speed at 8000 r / min at a high speed of 4 min;

[0061] (4) Adjust the high-speed mixer speed to 4000 r / min to slow stirred suspension, add 20 to 25 ° C water temperature water bath to cool down, when the suspension temperature is reduce...

Embodiment 3

[0066] Preparation of single component full-function fracturing additives

[0067] (1) Crushing the polymer polymer thickener (hydrophobic acrylamide copolymer) using a multi-function electric pulverizer, using 140 mesh sieve "sieving", collecting the sieved polymer polymer, seal preservation;

[0068] (2) Grinding the clay stabilizer (KCl), using 140 mesh sieve "sieve", collecting sieve, seal preservation;

[0069] (3) 43 g of ethanol, 56 g of isopropanol, 2 g 1-butanol, 0.8 g 1-hexanol, 0.4 g 1-octanol added to the beaker, was heated to a constant temperature magnetic stirrer to 70 ° C for 3 min, The dispersant is dispersed evenly;

[0070] (4) Take 71 g of hydrophobic acrylamide copolymers, 4 g of potassium chloride sieve after the sieve of the water-based dispersant, mix well with stir bar, load the high-speed mixer sample bucket, at the speed of 8000R / min Stirring at high speed for 4 min;

[0071] (5) Turn the high-speed mixer speed to 4000 r / min to slow stir the suspensi...

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Abstract

The invention discloses a single-component full-function fracturing fluid additive and a preparation process thereof. The process comprises the following steps: mixing ethylene glycol, isopropanol, 1-butanol, 1-hexanol and 1-octanol, and conducting heating to uniformly disperse the mixture to obtain a water-based dispersant; adding a high-molecular polymer thickening agent and an auxiliary agent into a water-based dispersing agent, wherein the auxiliary agent is one or more of a clay stabilizer, a discharge aiding agent, a drag reducer, an anti-emulsifying agent, a filtrate reducer, a corrosion inhibitor and a sterilizing agent; conducting stirring at a high speed to obtain suspension; and slowly stirring the suspension at a low speed, conducting cooling, and collecting a suspension sample when the temperature of the suspension is reduced to room temperature. The additive has the characteristics of good temperature resistance, shearing resistance, salt resistance, sand suspension and the like. The problems that an existing fracturing fluid system is serious in stratum pollution, difficult to dissolve, single in function, poor in performance and the like are solved, and the additive has the advantages of being good in use performance, environmentally friendly, capable of saving energy and reducing consumption and can be used as a clean and environment-friendly single-component type full-function fracturing fluid additive.

Description

Technical field [0001] The present invention relates to the preparation process of a single partial full-function fracturing solution additive, and more particularly to a single component full-function fracturing liquid additive and a preparation process thereof. Background technique [0002] In recent years, the fracturing process technology has developed rapidly, and the development of different geological conditions is developed, and different fracturing systems are prepared to achieve the best fracture and oil supply. [0003] Taking the water-based pressure fraction system as an example, the thickener glial and acrylamide copolymer has a significant "anti-polylectrolyte effect" and pH applications due to mature construction processes, occupying fracturing fluids More than 90% of the market. In addition to the thickener in the fracturing, there must be an appropriate additional auxiliaries, such as clay stabilizers, booster, damping agents, antifulifiers, losses, loss, corros...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/68
CPCC09K8/605C09K8/68C09K8/882C09K2208/32C09K8/03C09K8/62C09K2208/12C09K2208/28C09K8/54C09K8/602
Inventor 王磊范美玲赖小娟冯新根刘卫博李朋张小鑫
Owner SHAANXI UNIV OF SCI & TECH
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