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Method for preparing gel breaker for treating waste drilling fluid

A technology of waste drilling fluid and gel breaker, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve problems such as economic burden, environmental hazards, failure to meet environmental protection standards for emissions, complicated preparation process, etc., to increase transparency and cleanliness , The preparation process is clear and controllable, and the effect of good stability at room temperature

Inactive Publication Date: 2017-07-21
东营黄蓝知识产权运营管理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the inventor found during the research and development process that the inorganic salt breaker would further generate additional salt content, so that the separated water and other liquids could not meet the environmental protection standards for discharge; Facilitate soil remediation
More importantly, the preparation process of inorganic salt breakers often has unfavorable factors such as high pollution, high toxicity, and complicated preparation processes, which will eventually cause a huge economic burden and potential pressure on the environment for the disposal of waste drilling fluids.

Method used

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  • Method for preparing gel breaker for treating waste drilling fluid

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Embodiment Construction

[0020] The invention provides a method for preparing a gel breaker for treating waste drilling fluid. The preparation method has smooth flow, easy control of preparation parameters, low pollution and high yield.

[0021] Embodiments of the present invention will be described in detail below in conjunction with the following drawings.

[0022] Such as figure 1 As shown, a kind of method for preparing the breaker of waste drilling fluid provided by the invention comprises the following steps:

[0023] Step 1: Add water glass and water to the reaction vessel in sequence and stir evenly; among them, the mass ratio of water glass: water is 1:15-20 (water glass is CP grade); continue to add dropwise at a concentration of 8-9.5% Hydrochloric acid solution, until the pH value of the mixed liquid in the reaction vessel is 6-6.5, leave the reaction vessel to react for 2-3 hours;

[0024] Specifically, the nano-silica colloidal dispersion liquid is prepared in the reaction vessel throu...

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Abstract

The invention relates to the technical field of waste drilling fluid treatment, in particular to a method for preparing a gel breaker for treating a waste drilling fluid. The preparation method is smooth in flow path, preparation parameters are easy to control, the pollution is relatively low and the yield is relatively high. The preparation method comprises the following steps: adding water glass into a reaction container, stirring by using water, adding hydrochloric acid to adjust the PH value, and allowing standing still for reacting; performing nitrogen protection, adding starch, and heating for reacting; adding carboxymethyl cellulose and a free radical initiator, and standing for reacting; performing recrystallizing suction filtration by using isopropanol; washing by using anhydrous ethanol and glacial acetic acid, drying and the like.

Description

technical field [0001] The invention relates to the technical field of waste drilling fluid treatment, in particular to a method for preparing a gel breaker for treating waste drilling fluid. Background technique [0002] Drilling fluid is used as a circulating flushing medium used in the drilling process of oilfield drilling operations. It is mainly used to carry rock debris, balance drill bit pressure, cool and lubricate drilling tools, and transmit hydrodynamic forces. According to different drilling fluids The division of components can specifically include mud, emulsion, organic additives, water and so on. In the process of large-scale oil and gas field operation and development, a large amount of waste drilling fluid to be treated will be produced due to the huge production volume. In order to deal with these waste drilling fluids, technicians often use the process of burying and re-cultivation after curing. In the specific curing process, inorganic salt gel breakers ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/56
CPCC02F1/56
Inventor 霍延峰刘琦周娜周远李坚
Owner 东营黄蓝知识产权运营管理有限公司
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