Preparation method of low-cost functional polymer type fracturing fluid

A functional, fracturing fluid technology, applied in drilling compositions, chemical instruments and methods, etc., to achieve the effect of good shear resistance and low cost

Active Publication Date: 2020-09-22
山东滨州昱诚化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a preparation method of a low-cost functional polymer fracturing fluid, which solves the deficiencies existing in the current natural vegetable gum fracturing fluid and polyacrylamide fracturing fluid

Method used

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  • Preparation method of low-cost functional polymer type fracturing fluid
  • Preparation method of low-cost functional polymer type fracturing fluid
  • Preparation method of low-cost functional polymer type fracturing fluid

Examples

Experimental program
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specific Embodiment 1

[0031] (1) Add 350kg of acrylamide monomer, 36kg of maltodextrin, 62kg of 2-acrylamide-2-methylpropanesulfonic acid, and 36kg of N-vinyl-2-pyrrolidone into the water containing the reaction medium. 449kg, span60 23kg, tween80 25kg reaction kettle, react at 45°C for 2h, add initiator potassium persulfate 0.75kg, nitrogen protection, violent polymerization reaction occurs, and react for 2h after stabilization; multi-component copolymer colloid is obtained.

[0032] (2) The copolymer colloid is sheared and granulated, dried and pulverized to obtain a low-cost functional polymer fracturing fluid---thickener.

[0033] Cross-linking agent specific embodiment 1

[0034] (1) Weigh 136kg of zirconium oxychloride, 60kg of isoamyl alcohol, and polyols (glycerol, 120kg of mannitol, and 60kg of mannitol) and add them to a reaction kettle that has weighed 289kg of water; heat to 35°C for 1 hour;

[0035] (2) Add 35kg of rhamnolipid, heat at 50°C for reflux reaction for 1h;

[0036] (3) Fi...

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Abstract

The invention discloses a preparation method of a low-cost functional polymer type fracturing fluid, relates to the technical field of fracturing fluids, and particularly discloses a preparation method of a low-cost functional polymer type fracturing fluid, which comprises a preparation method of a low-cost functional polymer type fracturing fluid-thickening agent, a preparation method of a low-cost functional polymer type fracturing fluid-crosslinking agent, and a preparation method of a fracturing fluid composed of a thickening agent and a crosslinking agent. At present, a thickening agent can only form a stable fracturing fluid system with a cross-linking agent matched with the thickening agent. The fracturing fluid comprises the following components in percentage by weight: 0.15%-0.4%of a thickening agent and 0.2%-0.4% of a crosslinking agent. The fracturing fluid provided by the invention is small in dosage, the cost is 77-133 yuan / cubic meter, the salt resistance and shear resistance are higher than 50 mPa.S which is the industrial standard, the fracturing fluid can be directly prepared from reinjection water, and the problem of reinjection water discharge is solved.

Description

technical field [0001] The invention relates to fracturing fluid technology in the technical field of oilfield reservoir transformation, in particular to a preparation method of a low-cost functional polymer fracturing fluid, which includes a low-cost functional polymer fracturing fluid---thickening agent The preparation method and the preparation method of the low-cost functional polymer-type fracturing fluid, the cross-linking agent, and the fracturing fluid system composed of the above-mentioned thickening agent and the cross-linking agent. Background technique [0002] Fracturing fluid refers to a heterogeneous and unstable chemical system formed by various additives in a certain ratio. It is a working fluid used in fracturing oil and gas reservoirs. Its main function is to transmit the high pressure formed by ground equipment. into the formation, fractures the formation to form fractures and transports proppant along the fractures. According to their physical and chemi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/68C09K8/88C09K8/90C08F220/56C08F220/58C08F226/10
CPCC09K8/685C09K8/882C09K8/887C09K8/90C08F220/56
Inventor 孙立军王俊德宋月晴王嘉醇王嘉娴李齐
Owner 山东滨州昱诚化工科技有限公司
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