Ceramisite proppant and preparation method thereof

A technology of proppant and ceramsite, which is applied in the field of drilling aids, can solve problems such as low proppant efficiency and broken proppant, and achieve the effects of reducing broken rate, activating lattice, and improving mechanical strength

Inactive Publication Date: 2019-09-03
龙丹
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a ceramsite proppant and its preparati

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0032] The preparation method of the wear-resistant surface layer filler is as follows:

[0033](1) In terms of parts by mass, take 10~15 parts of filler base material, 7~10 parts of 2-ethylhexyl acrylate, 1~4 parts of sodium dodecyl diphenyl ether disulfonate, 70~90 parts deionized water, heated to 50-70°C and stirred for 40-50 minutes to obtain a mixture, adding potassium phosphate with 5-9% mass of the mixture, stirring and mixing for 20-30 minutes, then adding 10-15% potassium chloride to the mixture, Stir and mix at 50-70°C for 50-90 minutes to obtain mixture a, add potassium persulfate of 1-3% of the mass of mixture a, pass through nitrogen protection, heat up to 70-80°C and stir and mix for 3-5 hours to obtain the stirred mixture;

[0034] (2) Take the stirred mixture and add calcium chloride solution with a mass fraction of 4% according to the mass ratio of 4~9:10~20, let it stand for 50~60min, take the precipitate and dry it to obtain a dried product, and take the dri...

Embodiment 1

[0042] The filler base material is: take isoprene and add α-terpinene in a mass ratio of 10:3 and mix it.

[0043] Palladium catalyst: palladium content 0.48%, specific surface area 1000m 2 / g, bulk density 0.4g / mL.

[0044] The ceramsite base material is: take bauxite and mix it with purple sand soil at a mass ratio of 4:1.

[0045] The auxiliary sintering material is: in parts by mass, 10 parts of wollastonite, 3 parts of manganese ore powder, 1 part of potassium feldspar, and 1 part of dolomite are mixed to obtain the product.

[0046] Silane coupling agent: take vinyltrimethoxysilane, γ-(2,3-epoxypropoxy)propyltrimethoxysilane, vinyltris(β-methoxyethoxy)silane, N-( Any one or several of β-aminoethyl)-γ-aminopropyltriethoxysilanes are mixed in any mass ratio to obtain the product.

[0047] The preparation method of the wear-resistant surface layer filler is as follows:

[0048] (1) In parts by mass, take 10 parts of filler base material, 7 parts of 2-ethylhexyl acrylate...

Embodiment 2

[0057] The filler base material is: take isoprene and add α-terpinene in a mass ratio of 15:6 and mix it.

[0058] Palladium catalyst: palladium content 0.50%, specific surface area 1150m 2 / g, bulk density 0.45g / mL.

[0059] The ceramsite base material is: take bauxite and mix it with purple sand soil at a mass ratio of 6:3.

[0060] The auxiliary sintering material is: in parts by mass, 13 parts of wollastonite, 5 parts of manganese ore powder, 2 parts of potassium feldspar, and 2 parts of dolomite are mixed to obtain the product.

[0061] Silane coupling agent: take vinyltrimethoxysilane, γ-(2,3-epoxypropoxy)propyltrimethoxysilane, vinyltris(β-methoxyethoxy)silane, N-( Any one or several of β-aminoethyl)-γ-aminopropyltriethoxysilanes are mixed in any mass ratio to obtain the product.

[0062] The preparation method of the wear-resistant surface layer filler is as follows:

[0063] (1) In parts by mass, take 12 parts of filler base material, 8 parts of 2-ethylhexyl acryl...

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Abstract

Belonging to the technical field of drilling aids, the invention discloses a ceramsite proppant and a preparation method thereof. According to the invention, bauxite and purple grit mud are adopted asthe raw materials to prepare ceramsite, at the same time wollastonite is added to lower the firing temperature of the product, manganese ore powder and alumina in bauxite can form a solid solution, thereby improving the mechanical strength of ceramsite. The wear-resistant surface filler prepared according to the invention adopts isoprene as the raw material, is introduced with rigid alpha-terpinene, and is compounded with 2-ethylhexyl acrylate, thus ensuring no damage to the internally wrapped ceramsite and reducing the breakage rate of ceramsite. The method provided by the invention utilizesa silane coupling agent to modify the ceramisite surface, also adds acrylamide and the like for grafting, utilizes the contained sulfonic group and other hydrophilic groups to absorb water, enables agood swelling process of the obtained proppant after encountering water, thus increasing the spacing of propped fractures and improving the propping efficiency. The method provided by the invention solves the problems of easy breaking under impact and low propping efficiency of existing proppants.

Description

technical field [0001] The invention belongs to the technical field of drilling aids, and in particular relates to a ceramsite proppant and a preparation method thereof. Background technique [0002] In order to develop deep oil and gas wells and increase their production, fracturing technology is widely used. In order to ensure the effective propping of fractures in deep underground formations, suitable proppant is necessary. It can increase the conductivity of the formation and increase the production of oil or gas, and is an important factor in the application of fracturing technology. Due to its high strength and good sphericity, sintered ceramsite is the preferred fracturing proppant and has been highly valued. Among them, bauxite is used as the main raw material, combined with other inorganic materials to manufacture ceramsite proppant, which is used by many manufacturers. [0003] Fracturing proppants are solid particles with a certain strength used to support rock ...

Claims

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Application Information

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IPC IPC(8): C04B35/10C04B35/622C04B35/64C04B41/84C08F236/08C08F220/18C08F232/06C08F8/04C08F292/00C08F220/56C08F220/06C08F220/58C08F222/38C09K8/80
CPCC04B35/10C04B35/622C04B35/64C04B41/4944C04B41/84C04B2235/3201C04B2235/321C04B2235/3262C04B2235/3454C04B2235/3472C04B2235/349C04B2235/6562C04B2235/6567C08F8/04C08F236/08C08F292/00C09K8/805C08F220/56C08F220/06C08F222/385C04B41/4922C04B41/4834C04B41/4857C04B41/4535
Inventor 龙丹
Owner 龙丹
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