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Method for preparing novel solid lubricant microspheres for drilling fluid

A technology of solid lubrication and drilling fluid, applied in the direction of drilling compositions, chemical instruments and methods, etc., can solve the problems of waste of resources, low sphericity, low pressure of glass beads, etc., to reduce production costs, excellent lubrication performance effect

Inactive Publication Date: 2013-04-17
无锡润鹏复合新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the solid lubricants that are widely used mainly include graphite, molybdenum disulfide, plastic pellets, glass microspheres, etc. Among them, graphite and molybdenum disulfide are powdery and easy to float on the surface of the liquid, so the utilization is low and wastes resources. And pollute the environment; the pressure that glass microspheres can withstand is small, the breakage rate is high, and the ball rate is relatively low; in comparison, plastic beads are a relatively efficient solid lubricant for drilling fluids, with non-toxic, non-toxic Fluorescent, recyclable, etc., but the heat resistance of pure plastic materials is not good, and the large amount of heat generated during the drilling process can easily soften and deform the plastic

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Add 50g of Na-montmorillonite and 500mL of deionized water into the Erlenmeyer flask, stir ultrasonically for 45min, and set aside; add 13g of cetyltrimethylammonium bromide and 200mL of deionized water into the beaker , after heating and fully dissolving, an aqueous solution of cetyltrimethylammonium bromide is obtained; Ultrasonic stirring for 4 hours; washing with deionized water and suction filtration for 3 to 5 times until no Br ions were detected, then separating the filtrate, drying it in vacuum and grinding it into powder to obtain a modified organic montmorillonite for future use;

[0023] (2) Add 0.2 g of polyvinyl alcohol into 200 mL of deionized water, stir at 80° C. to fully dissolve it, and prepare a polyvinyl alcohol aqueous solution I with a concentration of 1 g / L for subsequent use; The obtained modified organic montmorillonite was added to the mixed solution II of 50g styrene and 5g divinylbenzene, and ultrasonically dispersed at 75°C for 0.5h, so ...

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PUM

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Abstract

The invention discloses novel solid lubricant microspheres for drilling fluid and a preparation method therefore. Low-cost layered inorganic fillers are added into a plastic material, so that a polymer chain in plastics can be intercalated among inorganic material layers, and the heat stability of a composite material is improved through the limitation of inorganic material lamella to the motion of the polymer chain. The method is low in cost and simple in process, and the prepared novel solid lubricant microspheres for the drilling fluid have excellent lubricating property, heat-resistance and wear and corrosion resistance, and are suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to a lubricating material for drilling fluid, in particular to a novel solid lubricating composite microsphere for drilling fluid and a preparation method thereof. Background technique [0002] With the development of oil exploration, the depth of drilling is increasing, the wear of drilling tools is becoming more and more serious, and various kinds of stuck pipe accidents occur frequently. common means of occurrence. Lubricants for drilling fluids are mainly divided into liquid lubricants and solid lubricants, among which solid lubricants are increasingly favored by people because of their advantages such as high load and corrosion resistance. At present, the solid lubricants that are widely used mainly include graphite, molybdenum disulfide, plastic pellets, glass microspheres, etc. Among them, graphite and molybdenum disulfide are powdery and easy to float on the surface of the liquid, so the utilization is low and wastes reso...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F2/44C09K8/03
Inventor 李长生冯桂双唐华王万杰
Owner 无锡润鹏复合新材料有限公司