Preparation process of auto-suspension coating material

A preparation process and self-suspension technology, which can be used in drilling compositions, mining fluids, earthwork drilling and mining, etc. It can solve the problems of low production efficiency of resin pellets, increased construction costs, high pump pressure, etc.

Pending Publication Date: 2019-01-04
CHONGQING CHANGJIANG RIVER MOLDING MATERIAL GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of product can indeed achieve semi-suspension in water and reduce the settling rate of proppant in water, but because the apparent density must be greatly reduced, its production cost will be greatly increased, and the performance of proppant, such as crushing, acid solubility, and diversion and other performance will be significantly reduced
However, the low production effic

Method used

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  • Preparation process of auto-suspension coating material
  • Preparation process of auto-suspension coating material
  • Preparation process of auto-suspension coating material

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0037] Example 1

[0038] The apparent density is 1.05g / cm 3 , 100 parts of ceramsite with a particle size of 20 / 40, heat to 175-185℃, pour the heated ceramsite into a bowl-shaped mixing casserole, then add 2 parts of epoxy resin and stir; the temperature drops to 150-160℃, add 0.2 parts of modified aromatic amine curing agent (T31) and stir; the temperature drops to 80-90℃, add 2 parts of propylene glycol polymer and 0.02 parts of dibutyltin dilaurate and stir; the temperature drops to 70-80℃, add 0.2 Stir 1 part of ethylenediamine; the temperature drops to 60-70℃, add 0.8 part of toluene diisocyanate and stir; the temperature drops to 50-60℃, then add 0.8 part of drag reducer to mix; the temperature drops to 40-50℃ and take it out of the pot. Epoxy resin and modified aromatic amine curing agent form inner resin film, inner resin film is epoxy resin film; glycerol polymer, dibutyltin dilaurate, diethylenetriamine and toluene diisocyanate form outer layer Resin film, the outer r...

Example Embodiment

[0039] Example 2

[0040] The apparent density is 1.65g / cm 3 , 100 parts of ceramsite with a particle size of 30 / 50, heat to 220-230℃, pour the heated ceramsite into a bowl-shaped mixing casserole, then add 3 parts of phenolic resin and stir; the temperature drops to 190-200℃, add 0.6 Part hexamethylenetetramine and stir; the temperature drops to 120-130℃, add 4 parts glycerol polymer and 0.02 parts lead isooctanoate and stir; the temperature drops to 100-110℃, add 0.2 part triethylamine and stir ; The temperature drops to 90-100 ℃, add 1 part of methylene diphenyl diisocyanate and stir; the temperature drops to 80-90 ℃, then add 1.2 parts of drag reducer to mix; the temperature drops to 60-70 ℃ out of the pot.

Example Embodiment

[0041] Example 3

[0042] The apparent density is 2.05g / cm 3 , 100 parts of ceramsite with a particle size of 40 / 70, heat to 80-90℃, pour the heated ceramsite into a bowl-shaped mixing casserole, then add 2 parts of ethylene glycol and 0.02 parts of tributyltin and stir; the temperature drops to 75 -85℃, add 0.6 parts isophorone diisocyanate and stir; the temperature drops to 55-65℃, add 4 parts glycerol polymer and 0.02 parts lead isooctanoate and stir; the temperature drops to 45-55℃, add Stir 0.2 parts of triethylamine; the temperature drops to 40-50℃, add 1 part of methylene diphenyl diisocyanate and stir; the temperature drops to 35-45℃, then add 1.6 parts of drag reducer to mix; the temperature drops to 30- Cook out at 40°C.

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Abstract

The invention belongs to the technical field of fluid mineral exploitation of oil, natural gas, shale gas and the like, and particularly discloses a preparation process of an auto-suspension coating material. The preparation process comprises the following steps: (1) heating aggregate to 80-230 DEG C, and stirring and mixing the heated aggregate; (2) reducing the temperature to 75-200 DEG C, adding inner layer resin and a curing agent of the inner layer resin, and carrying out stirring to form an inner coating layer; (3) reducing the temperature to 40-130 DEG C, adding a catalyst, outer layerresin, an amine additive and a curing agent of the outer layer resin, and carrying out stirring to form an outer coating layer; (4) reducing the temperature to 35-90 DEG C, adding a drag reducer and carrying out stirring, wherein the mass of the drag reducer is 0.5-1.5% of that of the aggregate; and (5) reducing the temperature to 30-70 DEG C, taking the mixture out, and controlling the apparent density range of the auto-suspension coating material to be 1.05-2.60g/cm<3>. The auto-suspension coating material prepared by the preparation process has good flow conductivity, good auto-suspension performance and reduced friction resistance.

Description

technical field [0001] The invention belongs to the technical field of fluid mineral exploitation such as oil, natural gas and shale gas, and in particular relates to a preparation process of a self-suspension coating material. Background technique [0002] Hydraulic fracturing technology has been relatively mature at home and abroad. Petroleum fracturing proppant is one of the essential items in the fracturing process. Its performance will directly affect the effect of hydraulic fracturing. The apparent density is the key to evaluate the performance of proppant. One of the important indicators, the lower the apparent density, the lower its relative density relative to the fracturing fluid. When the proppant is mixed with the fracturing carrier fluid, the lower the apparent density, the easier it is to suspend in the fracturing fluid, thereby greatly reducing sedimentation rate. Push the pump farther during the pumping process. The high pumping pressure pumps the fluid int...

Claims

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Application Information

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IPC IPC(8): C09K8/80C08G18/24C08G18/26C08G18/48C08G18/58C08G18/76C08F220/56C08F220/54C08F220/58C08F220/06C08F228/02
CPCC08F220/54C08F220/56C08F220/58C08F220/585C08G18/242C08G18/26C08G18/4825C08G18/4829C08G18/58C08G18/7614C09K8/805C08F220/06C08F228/02
Inventor 熊帆熊鹰王正力陈秋庆
Owner CHONGQING CHANGJIANG RIVER MOLDING MATERIAL GRP
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