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Oily sludge gel particle profile control agent and preparation method thereof

A technology of mud gel particles and profile control agent, which is applied in the field of oily sludge gel particle profile control agent and its preparation, which can solve the problems of poor suspension and achieve good swelling ability, delayed swelling performance and high strength

Active Publication Date: 2016-03-16
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defect of poor suspensibility of conventional oily sludge gel particle profile control agents, fill the sludge gel particles with less dense plant straw, and provide a plant straw reinforcement with adjustable density and strength. Oily sludge gel particle profile control agent

Method used

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  • Oily sludge gel particle profile control agent and preparation method thereof
  • Oily sludge gel particle profile control agent and preparation method thereof
  • Oily sludge gel particle profile control agent and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] A profile control agent for oily sludge gel particles, achieved through the following steps:

[0029] Physically and mechanically pulverize the corn stalks, cut them into 6mm, soak them with clean water, shake off the excess water and let them hang in the air, then soak the corn stalks with 5% NaOH solution for 48 hours, rinse them with tap water until neutral, put Dry in an oven set at 105°C; then soak the corn stalks with a solution made of aminopropyltriethoxysilane and ethanol at a volume ratio of 1:4 for 6 hours, take it out, and put it in an oven set at 105°C After drying, add 10 g of the treated corn stalks to 25 g of oily sludge slurry, mix and stir evenly, and obtain oily sludge wrapped with corn stalks.

[0030] In a mixing container with a stirring device, add 20 g of 40% acrylamide, 0.09 g of N-methylol propionamide, 35 g of oily sludge wrapped with corn stalks, 44.84 g of pure water, and adjust the pH with the reaction regulator sodium carbonate When the v...

Embodiment 2

[0035] A profile control agent for oily sludge gel particles, achieved through the following steps:

[0036] Physically and mechanically pulverize the rice straw, cut it into 8mm, soak it with clean water, shake off the excess water and let it air, then soak the rice straw with 4% acetic acid solution for 36 hours, rinse it with tap water until neutral, put Dry in an oven set at 105°C; then soak the rice straw with a solution made of anilinomethyltriethoxysilane and ethanol at a volume ratio of 1:6 for 4 hours, take it out, and put it in an oven set at 105°C After drying, add 8 g of the treated rice straw into 20 g of oily sludge slurry, mix and stir evenly, and obtain oily sludge wrapped with rice straw.

[0037] In a mixing container with a stirring device, add 20 g of 40% acrylamide, 0.09 g of N-methylol propionamide, 28 g of oily sludge wrapped with rice straw, 51.81 g of pure water, and adjust the pH with the reaction modifier sodium carbonate When the value reaches 7, 0...

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Abstract

The invention relates to an oily sludge gel particle profile control agent and a preparation method thereof, and belongs to the technical field of profile control water plugging of oil fields. The oily sludge gel particle profile control agent is formed by mixing plant straw, oily sludge slurry, polymeric monomers, an initiating agent, a cross-linking agent and water. Specially treated plant straw is added to the oily sludge slurry to prepare an oily sludge profile control agent inner core wrapped with the plant straw, then chemosynthetic gel is filled with the inner core, and the plant straw strengthened gel particle profile control agent is obtained. The density and strength of the profile control agent are adjusted by adjusting the adding proportion of the plant straw, the density of the particle profile control agent is decreased, and meanwhile higher strength of the profile control agent can be guaranteed; water absorption can reach 4.8-9.5 times, the expanding time is 5-28 days, good expansion capacity and delayed expansion performance are achieved, and deep placement and effective plugging of an oil reservoir can be achieved.

Description

technical field [0001] The invention relates to a profile control agent for oily sludge gel particles and a preparation method thereof, belonging to the technical field of profile control and water shutoff in oilfields. Background technique [0002] Oily sludge is oily solid waste produced in the process of oil extraction, transportation, refining and oily sewage treatment, with a large output. In my country's petrochemical industry, an average of 80×10 4 T tank bottom mud, pool bottom mud. Oily sludge contains a large amount of benzene series, phenols, anthracene, pyrene and other odorous and toxic substances. The composition is complex and difficult to treat. If oily sludge is not treated, it will not only pollute the environment, but also cause a waste of resources. [0003] Directly using oily sludge as a profile control agent is a commonly used sludge treatment method. In this method, sludge is injected into the reservoir, and solid particles are used to block the por...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F289/00C08F220/56C08F220/58C09K8/502C09K8/508
Inventor 李遵照张俊瑾吴信荣蒋明龙张国萍徐卫东杨昌华刘永安
Owner CHINA PETROLEUM & CHEM CORP
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