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Production method of polymer for drilling fluid

A production method, polymer technology, applied in drilling compositions, chemical instruments and methods, etc.

Inactive Publication Date: 2012-05-02
HUIXIAN AEROSPACE CHEM NO 1 FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The original drilling fluid treatment agent can no longer fully meet the needs of the development of drilling fluid technology, which has prompted oilfield technicians to devote themselves to the research and development of new drilling fluid treatment agent

Method used

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  • Production method of polymer for drilling fluid
  • Production method of polymer for drilling fluid
  • Production method of polymer for drilling fluid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] Embodiment 1, a kind of production method of drilling fluid polymer is synthesized by 2-methyl-2-acryloxypropyl sulfonic acid and acrylamide, acrylic acid copolymerization, and its specific production steps are as follows:

[0087] (1), an appropriate amount of 2-methyl-2-acryloyloxypropylsulfonic acid was dissolved in water to obtain solution A;

[0088] (2), adding an appropriate amount of water to equimolar sodium hydroxide, stirring and dissolving, then cooling to room temperature to obtain solution B;

[0089] (3) Slowly add solution A to solution B, then add an appropriate amount of acrylamide and acrylic acid, stir to dissolve, and obtain mixed solution C;

[0090] (4), under the condition of constant stirring and nitrogen flow, the temperature of the mixed liquid C is raised to 35° C., and then an initiator accounting for 0.05% of the total mass of acrylamide and acrylic acid is added, and nitrogen is passed for a certain period of time after stirring evenly;

...

Embodiment 2

[0096] Embodiment 2, the production method of this embodiment is the same as that of Embodiment 1, and the similarities will not be repeated. The difference is that the amount of 2-methyl-2-acryloyloxypropyl sulfonic acid is the total amount of acrylamide and acrylic acid. The molar percentage is 30%; the added amount of the initiator accounts for 0.08% of the total mass of acrylamide and acrylic acid; the total time of passing nitrogen is 80 minutes.

Embodiment 3

[0097] Embodiment 3, the production method of this embodiment is the same as that of Embodiment 1, and the similarities will not be repeated. The difference is that the amount of 2-methyl-2-acryloyloxypropyl sulfonic acid is the total amount of acrylamide and acrylic acid. The mole percentage is 25%; the added amount of the initiator accounts for 0.06% of the total mass of acrylamide and acrylic acid; the total time of passing nitrogen is 65 minutes.

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Abstract

The invention discloses a production method of a polymer for a drilling fluid, comprising the following steps: dissolving 2-methyl-2- acyloxy propyl sulfonate in water, then adding water in equimolar sodium hydroxide, stirring for dissolving and cooling, mixing the two mixtures and then adding a proper amount of acrylamide and acrylic acid, stirring for dissolving, heating up the mixed liquid to 35 DEG C with introducing nitrogen, then adding an initiating agent having an amount accounting for 0.05-0.08 % of the total weight of acrylamide and acrylic acid, uniformly stirring, then introducing nitrogen for a certain time, reacting for 8-10 h at a constant temperature of 35 DEG C to obtain a gel product, cutting and pelleting the gel product, and drying to obtain the polymer for the drilling fluid. The polymer produced by the invention has strong salt resistance and calcium pollution resistance, strong ability to inhibit clay hydrating and dispersing, and strong flocculation and coating capacities, can be applied in fresh water drilling fluid, salt-water drilling fluid, saturated salt-water drilling fluid, seawater drilling fluid and other drilling fluids, and has good compatibility with other treating agents to drilling fluid.

Description

Technical field: [0001] The invention relates to a production method of a polymer treatment agent for drilling fluid. Background technique: [0002] From the perspective of the development of drilling fluid treatment agents, the period of great development of mud treatment agents in my country was in the 1980s. During this period, acrylic acid multi-polymer copolymer treatment agents and their mud systems were formed, which made polymer mud technology greatly improved. big development. The zwitterionic polymer developed in the 1990s, on the basis of the practical experience in the 1980s, made a new development in the polymer mud process. From the 1980s to the 1990s, the research on cationic treatment agents has gradually attracted people's attention, but the series of cationic treatment agents and mud systems have not really been formed, and there is a lack of more supporting measures, which limits the development of this system. [0003] In the 1980s, the polymer drilling ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/06C08F220/38C08F220/56C09K8/035
Inventor 鲁振成郭明史兆新秦玲利鲁清峰鲁清明刘逸轩张青玲
Owner HUIXIAN AEROSPACE CHEM NO 1 FACTORY
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