Preparation process of leak protection plugging agent along with drilling based on control of monomer concentration

A technology of monomer concentration and preparation process, which is applied in the direction of drilling composition, chemical instruments and methods, etc., can solve the problems of delaying drilling time, reducing drilling efficiency, and consuming a lot of time, so as to reduce production costs and increase production efficiency , Facilitate the effect of processing

Inactive Publication Date: 2013-03-27
倪蕊
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This technology allows for efficient preparations with low costs without sacrificing quality or performance during drillings operations. It also enhances the effectiveness of existing materials when used at sites where they were previously found that had problems such as leaks caused from wellbores being filled too quickly due to water damage.

Problems solved by technology

This patented describes how current technologies involved in drift management during drilling involve losing circulating liquor through leaks between drilled holes due to factors like incomplete filling of boreholes, excessive weight loads near fault zones, debris accumulation within cracks, insufficient sealing power against flow restrictions, and failure modes involving bridges and plugs. There exists a challenge related to efficient use of plugger devices especially in deep hole environments where multiple failures frequently happen simultanously.

Method used

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  • Preparation process of leak protection plugging agent along with drilling based on control of monomer concentration

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Embodiment

[0029] The invention relates to a preparation process of an anti-leakage plugging agent while drilling based on controlling the concentration of a monomer, comprising the following steps:

[0030] (a) AM and AMPS are purified for subsequent use;

[0031] (b) Weigh a certain amount of AA and hydrolyze it, and move it into a reaction vessel placed in a super constant temperature water bath;

[0032] (c) adding a certain amount of cross-linking agent;

[0033] (d) adding a certain amount of AM and AMPS, and the total monomer concentration is 14.3% to 18.2% by mass, and adjusting the pH value of the reaction system to 7 with 10% sodium hydroxide solution;

[0034] (e) After exhausting oxygen with an inert gas and stirring for about a period of time, add the initiator;

[0035] (f) Adjust the temperature to the reaction temperature, and polymerize for a certain period of time to obtain the target product.

[0036] In the step (a), AM and AMPS are purified by ethanol.

[0037] In t

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Abstract

The invention discloses a preparation process of a leak protection plugging agent along with drilling based on the control of monomer concentration. The preparation process comprises the following steps: (a) purifying AM (acrylamide) and AMPS (2-acrylamido-2-methyl propane sulfonic acid) for later use; (b) weighing AA (acrylic acid), hydrolyzing and transferring into a reactor in a super constant-temperature water bath; (c) adding a certain amount of cross-linking agent; (d) adding AM and AMPS solutions, and regulating the pH value of a reaction system to 7, wherein the monomer concentration is 14.3%-18.2% by weight; (e) introducing inert gas for deoxygenation, stirring and adding an initiator; and (f) regulating the temperature to reaction temperature, and performing polymerization reaction for a certain period of time to get a target product. According to the preparation process disclosed by the invention, the leak protection plugging agent along with drilling can be successfully prepared by controlling the monomer concentration in reaction process, the preparation process further has the advantages of high production efficiency, simple production process, simplicity in operation and capability of greatly reducing the production cost, various performances of the produced leak protection plugging agent along with drilling are far better than those of an existing product, and the leak protection plugging agent along with drilling is further conductive to field well leakage treatment.

Description

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Claims

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Application Information

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Owner 倪蕊
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