A kind of cutting-lifting agent for gas stagnation plug and preparation method thereof

A technology of cutting agent and initiator, which is applied in the field of cutting agent and preparation for gas stagnation plugs, can solve the problems of insufficient temperature resistance of cutting agent, improve anti-collapse performance, improve gas retarding ability, and improve kinetic energy. The effect of plastic ratio

Active Publication Date: 2021-09-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems such as insufficient temperature resistance of the above-mentioned gas stagnation lifting agent existing in the prior art, the present invention proposes a kind of gas stagnation lifting agent, specifically relates to a kind of gas stagnation lifting agent and its preparation method

Method used

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  • A kind of cutting-lifting agent for gas stagnation plug and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0029] Add 20g of sepiolite and 0.5g of KH560 to 100mL of distilled water at a stirring speed of 300 rpm. After stirring for 40 minutes, add 3g of 2-acrylamide-2-methylpropanesulfonic acid under stirring, and use sodium hydroxide to Adjust the pH value to 6-7, then add 0.02g of ammonium persulfate and 0.015g of sodium bisulfite, heat at 60°C, keep the stirring speed for 4 hours, dry and pulverize the resulting mixture to obtain the final product.

Embodiment 2

[0031] Add 20g of attapulgite and 0.4g of KH550 to 100mL of distilled water at a stirring speed of 500 rpm. After stirring for 40 minutes, add 2g of 2-acrylamide-2-methylpropanesulfonic acid under stirring, and use sodium hydroxide Adjust the pH value to 6-7, then add 0.015g potassium persulfate and 0.015g sodium bisulfite, heat at 70°C, keep stirring for 4 hours, dry and pulverize the resulting mixture to obtain the final product.

Embodiment 3

[0033] Add 20g of sepiolite, 0.2g of KH560 and 0.2g of KH570 to 100mL of distilled water at a stirring speed of 600 rpm. After stirring for 30 minutes, add 1.5g of 2-acrylamide-2-methylpropanesulfonic acid under stirring, and Use sodium hydroxide to adjust the pH value to 6-7, then add 0.015g potassium persulfate and 0.015g sodium bisulfite, heat at 60°C, keep the stirring speed for 4 hours, dry and pulverize the obtained mixture to obtain the final product .

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Abstract

The invention relates to a cutting agent for gas stagnation plugs in the technical field of petroleum drilling chemical materials and a preparation method. The cutting agent for air stagnation plugs is made by grafting polymerized monomers onto the surface of layered chain clay minerals after organic modification; the cutting agent for air stagnation plugs prepared by the method of the present invention has better high temperature resistance Salt resistance, cutting and water loss reducing performance; the temperature resistance of the air stagnation plug cutting agent of the present invention is better than that of organic cutting agents, and the compatibility and water loss performance are better than simple layered chain clay minerals. The excellent properties of polymers for water loss reduction and layered chain clay minerals’ resistance to temperature and shearing are suitable for use in deep high-temperature formations, and can effectively improve the gas retardation capacity of gas stagnation plugs, thereby slowing down the speed of oil and gas upward channeling and prolonging safe operation time.

Description

technical field [0001] The invention relates to a cutting agent for gas stagnation plugs in the technical field of petroleum drilling chemical materials, and more particularly relates to a cutting agent for gas stagnation plugs and a preparation method thereof. Background technique [0002] At present, the shear-lifting agents used in oil drilling at home and abroad are mainly biopolymers and synthetic polymers, which are mainly used to increase the kinetic-plastic ratio of drilling fluids, thereby improving their sand-carrying and suspension capabilities. Biopolymers have good salt resistance, but their temperature resistance is poor. When the temperature is high, they are easily oxidized and decomposed, and the effect of thickening and cutting is greatly reduced, and the temperature resistance is about 100°C. Synthetic polymers generally have a low kinetoplastic ratio, poor shear thinning properties, unsatisfactory viscosification and cutting effects, and the temperature r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/03C09K8/035C09K8/24C09K8/16C09K8/493
CPCC09K8/03C09K8/032C09K8/035C09K8/145C09K8/24C09K8/493
Inventor 林永学柴龙韩子轩陈晓飞王琳甄剑武高书阳杨小华王显光陈铖
Owner CHINA PETROLEUM & CHEM CORP
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