Gel particles and preparation method thereof

A technology of gel particles and silica sol, applied in chemical instruments and methods, drilling compositions, etc., can solve the problems of small sludge treatment volume and complex sludge pretreatment procedures, and achieve enhanced stability and pollution prevention. The effect of harmless treatment of mud and excellent deformation properties

Inactive Publication Date: 2016-04-13
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] The present invention mainly aims at the defects of small sludge treatment volume and complex sludge pretreatment procedures existing in the existing oily sludge treatment technology, and provides a gel particle filled with sludge

Method used

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  • Gel particles and preparation method thereof
  • Gel particles and preparation method thereof
  • Gel particles and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Dissolve 100 parts of acrylamide, 0.5 parts of dimethylaminoethyl methacrylate, and 0.2 parts of methylenebisacrylamide in 257 parts of deionized water to prepare an aqueous solution, add 5 parts of silica sol, 100 parts of water content 50%, oil-containing 0.5% of the sludge mass, stirred and mixed to obtain uniformly dispersed sludge slurry to be polymerized, 0.1 part of potassium ammonium persulfate and 0.1 part of sodium bisulfite were dissolved in 2 parts of deionized water to prepare an aqueous solution, and added to the sludge to be polymerized In the sludge slurry, after uniform stirring, the reaction is static at room temperature for 2 hours, and the product is cut into pieces, granulated, and sieved to obtain sludge-filled gel particles with a ratio of sludge pieces to acrylamide monomers of 1:1.

[0030] According to the evaluation method in "Q / SH10250426-2009 Pre-crosslinked Particle Profile Control Agent Technical Conditions", the expansion multiple, elastic...

Embodiment 2

[0033] Dissolve 100 parts of acrylamide, 0.5 parts of dimethylaminoethyl methacrylate, and 0.3 parts of methylene bisacrylamide in 258 parts of deionized water to prepare an aqueous solution, add 5 parts of silica sol, 150 parts of 0.5% of the sludge block, stirring and mixing to obtain uniformly dispersed sludge slurry to be polymerized, 0.2 parts of potassium ammonium persulfate and 0.2 parts of sodium bisulfite were dissolved in 4 parts of deionized water to prepare an aqueous solution, and added to the sludge to be polymerized In the sludge slurry, after being stirred evenly, the reaction is static at room temperature for 2 hours, and the product is cut into pieces, granulated, and sieved to obtain sludge-filled gel particles with a ratio of sludge pieces to acrylamide monomers of 1.5:1.

[0034] Embodiments 3-5 According to the steps of Embodiments 1 and 2, the formula and conditions are shown in Table 1.

[0035] Table 1 embodiment 3~5 gel granule synthetic formula and p...

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Abstract

The invention relates to gel particles and a preparation method thereof, belongs to the field of harmless utilization technology of oily sludge, and especially relates to the field of preparation technology of gel particles by using the oily sludge. The gel particles contain a macromolecular spatial net-shaped structural body R which is composed of a R1, a R2 and a R3 structural unit, and the spatial net-shaped structural body R is filled with a mixture comprising silica sol and oily sludge. The gel particles have the beneficial effects that a monomer 2-(dimethylamino)ethyl methacrylate with three functional groups and the inorganic material silica sol are introduced into the macromolecular spatial net-shaped structural body, so that stability of the oily sludge in the spatial net-shaped structure is improved, tolerance to temperature of gel particles reaches to 110 DEG C, tolerance to salt of gel particles reaches to 20 x 10<4> mg / L, the expansion multiple is higher than 4, and the sludge filling proportion reaches to 50%; the gel particles have excellent deformation performance, treatment amount of sludge is increased, so that harmless treatment of sludge is realized, needs of profile control and displacement of water injection wells of high water-cut oilfields can be met, plugging of macroporous channel and deep water flooding are realized, and exploitation effect is improved.

Description

technical field [0001] The invention relates to a gel particle and a preparation method thereof, belonging to the technical field of harmless utilization of oily sludge, in particular to the technical field of preparing gel particle by using oily sludge. Background technique [0002] Oily sludge is a kind of solid waste produced in the process of oil exploitation and oilfield sewage treatment. It has large output, complex composition, and difficult treatment. It has become one of the important pollutants affecting the quality of oilfield and surrounding environment. If it is not treated effectively in time, it will not only waste resources, but also pollute the environment and pose a threat to human health. At present, the treatment of oily sludge is mainly to use oily sludge as a profile control agent, inject the sludge into the reservoir, and use solid particles to block the pores of the core, so that the subsequent injected water can change the seepage direction and incre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/512C09K8/588
CPCC09K8/512C09K8/588
Inventor 李晓东张国萍杨昌华吕新华陈传东陈宗林曹敏刘明霞
Owner CHINA PETROLEUM & CHEM CORP
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