Oil-containing sludge profile-control plugging agent and preparation method thereof

A profile control plugging agent, oil sludge technology, applied in chemical instruments and methods, drilling composition and other directions, can solve the problems of unstable profile control agent, poor profile control plugging effect, etc., to improve stability, Improve the effect of profile control

Active Publication Date: 2018-03-20
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defects of unstable oily sludge profile control agent and poor profile control and plugging effect in the prior art, so as to provide an oily sludge with high stability and strong profile control and plugging effect. Mud profile control plugging agent and preparation method thereof

Method used

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  • Oil-containing sludge profile-control plugging agent and preparation method thereof
  • Oil-containing sludge profile-control plugging agent and preparation method thereof
  • Oil-containing sludge profile-control plugging agent and preparation method thereof

Examples

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Embodiment 1

[0051] This embodiment provides a profile control and plugging agent for oily sludge. The profile control and plugging agent is made of the following raw materials: 3 kg of oily sludge, which is produced by the second joint station of Gudong Oil Production Plant in Shengli Oilfield Subsidence output, its water content is 70wt%, oil content is 10wt%, mud content is 20wt%;

[0052] Dispersant 1.0kg, described dispersant is sodium lauryl sulfate;

[0053] Suspension stabilizer 0.2kg, described suspension stabilizer is amphiphilic block T type polymer A;

[0054] 95.5kg of water.

[0055] This embodiment also provides a method for preparing the oily sludge profile control and plugging agent, comprising the following steps:

[0056] (1) Take the oily sludge according to the above selected parts by weight, pump it to the oily sludge dispersion tank through the solid sludge feeding pump, add water and dispersant in the selected parts by weight, and disperse through stirring;

[00...

Embodiment 2

[0060] This embodiment provides a profile control and plugging agent for oily sludge. The profile control and plugging agent is made of the following raw materials: 5 kg of oily sludge, which is produced by the second joint station of Gudong Oil Production Plant in Shengli Oilfield Subsidence output, its water content is 61.99wt%, oil content is 13.01wt%, mud content is 25wt%;

[0061] Dispersant 0.6kg, described dispersant is the sodium perfluoroalkyl sulfonate of C5-C10;

[0062] Suspension stabilizer 0.2kg, described suspension stabilizer is amphiphilic block T type polymer B;

[0063] 94.5kg of water.

[0064] This embodiment also provides a method for preparing the oily sludge profile control and plugging agent, comprising the following steps:

[0065] (1) Take the oily sludge according to the above selected parts by weight, pump it to the oily sludge dispersion tank through the solid sludge feeding pump, add water and dispersant in the selected parts by weight, and dis...

Embodiment 3

[0069] This embodiment provides a profile control and plugging agent for oily sludge. The profile control and plugging agent is made of the following raw materials: 7kg of oily sludge, which is produced by the second joint station of Gudong Oil Production Plant in Shengli Oilfield Subsidence output, its water content is 69.54wt%, oil content is 15.46wt%, mud content is 15wt%;

[0070] Dispersant 0.5kg, described dispersant is sodium alkylsulfonate;

[0071] Suspension stabilizer 0.2kg, described suspension stabilizer is amphiphilic block T type polymer C;

[0072] 92.3kg of water.

[0073] This embodiment also provides a method for preparing the oily sludge profile control and plugging agent, comprising the following steps:

[0074] (1) Take the oily sludge according to the above selected parts by weight, pump it to the oily sludge dispersion tank through the solid sludge feeding pump, add water and dispersant in the selected parts by weight, and disperse through stirring; ...

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Abstract

The invention provides an oil-containing sludge profile-control plugging agent and a preparation method thereof. The oil-containing sludge profile-control plugging agent is prepared from the followingraw materials in parts by weight: 3 to 20 parts of oil-containing sludge, 0.2 to 1.0 part of dispersing agent, 0.2 to 0.5 part of suspension stabilizer, and 79.6 to 95.5 parts of water. The phenomenon that the oil-containing sludge profile-control plugging agent agglomerates, and is difficult to stably suspend and scatter can be effectively prevented, a better profile control effect on an oil layer can be achieved, the injection performance is improved, and simple operation, convenience in use and low cost are achieved.

Description

technical field [0001] The invention belongs to the technical field of oil and gas field development engineering, and in particular relates to an oily sludge profile control and plugging agent and a preparation method thereof. Background technique [0002] The treatment and utilization of oily sludge, the waste generated in the process of oilfield development, has always been a technical problem that domestic oilfields urgently need to solve. According to preliminary statistics, Shengli Oilfield produces 146,500 tons of oily sludge every year during the oil-water separation process, and the annual harmless treatment costs tens of millions of yuan. As the water content of oilfield production fluid continues to rise, the discharge of oily sludge will also continue to increase. Because oily sludge not only contains a certain amount of oil and clay, but also contains a variety of harmful chemical substances, if it is not disposed of properly, it will cause serious pollution to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/508C08F283/06
CPCC08F283/065C09K8/508C09K8/5083C09K2208/18
Inventor 田玉芹靳彦欣隋春艳肖建洪蒋贤儒宋岱锋张冬会王昊张光焰郭宏伟
Owner CHINA PETROLEUM & CHEM CORP
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