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Fracturing lamination propping agent

A proppant and film coating technology, which is applied in the directions of production fluid, wellbore/well components, drilling composition, etc., can solve the problem of high friction resistance of sand-carrying water pumping, and achieve moderate viscosity, good drag reduction performance, Good fluidity

Inactive Publication Date: 2019-04-05
CHONGQING CHANGJIANG RIVER MOLDING MATERIAL GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a film-coated proppant for fracturing to solve the problem of high friction in water-carrying sand pumping

Method used

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  • Fracturing lamination propping agent

Examples

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Embodiment 1

[0033] This embodiment discloses a film-coated proppant for fracturing, which includes a proppant body and a drag-reducing membrane base material covering the surface of the proppant body, and the mass-number ratio of the drag-reducing membrane base material to the proppant body is 1: 100. The drag-reducing film base material is prepared from the following raw materials in parts by mass: 740 parts of water, 70 parts of acrylamide, 80 parts of 2-acrylamido-2-methylpropanesulfonic acid, 30 parts of polyenylamine, dimethyl dimethicone 80 parts of allyl ammonium chloride and 5 parts of initiator; ammonium persulfate is selected as the initiator, and vinylamine is selected as the polyenamine; the drag reducing film base material can also include the following raw materials, the concentration is 1% sodium hydroxide solution .

[0034] In this embodiment, the proppant body is made of the following raw materials in parts by mass: 100 parts of aggregate, 5 parts of resin and 2 parts o...

Embodiment 4

[0046] The difference between Example 4 and Example 1 is that in this example, the proppant body includes aggregate and a film layer wrapped outside the aggregate, and the film layer is prepared from resin, curing agent, catalyst and amine compound . The aggregate is 30 / 50 quartz sand, the resin is propanol polymer, the curing agent is diphenylmethane diisocyanate, the catalyst is lead isooctanoate, and the amine compound is ethylenediamine. Among them, 100 parts of aggregate, 2.5 parts of resin, 2 parts of curing agent, 0.02 parts of catalyst, and 0.3 parts of amine compound;

[0047] The preparation process of the corresponding proppant body in step (5) is: heating the aggregate to 95°C, adding resin and catalyst, mixing and stirring; when the temperature drops to 85°C, adding amine compounds, stirring and mixing; when the temperature drops to 75°C, add the curing agent, mix and stir; the temperature drops to 50°C, take out the pot, and get the proppant body.

Embodiment 5

[0049] The difference between Example 5 and Example 1 is that in this example, the proppant body includes aggregate and a film layer wrapped outside the aggregate, and the film layer is prepared from resin, curing agent, catalyst and amine compound . The aggregate is 30 / 50 quartz sand, the resin is glycerol polymer, the curing agent is toluene diisocyanate, the catalyst is tributyltin, and the amine compound is diethylenetriamine. Among them, 100 parts of aggregate, 3 parts of resin, 2 parts of curing agent, 0.02 parts of catalyst, and 0.3 parts of amine compound;

[0050] The preparation process of the corresponding proppant body in step (5) is: heating the aggregate to 105°C, adding resin and catalyst, mixing and stirring; when the temperature drops to 95°C, adding amine compounds, stirring and mixing; when the temperature drops to 75°C, add the curing agent, mix and stir; the temperature drops to 50°C, take out the pot, and get the proppant body.

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Abstract

The invention belongs to the technical field of compositions for enhancing rupturing, and particularly discloses a fracturing lamination propping agent which comprises a propping agent body and a dragreduction film covering the surface of the propping agent body. The drag reduction film is prepared from water, acrylic amide, 2-acrylamide-2-methyl propanesulfonic acid, polyenamine, dimethyl diallyl ammonium chloride and initiators. The fracturing lamination propping agent has good drag reduction performance and suspension property, can be directly placed into clear water to perform fracturingconstruction, and is convenient and reliable to use.

Description

technical field [0001] The invention belongs to the technical field of compositions for strengthening fracturing, and in particular relates to a film-coated proppant for fracturing. Background technique [0002] Fracturing proppant refers to the liquid additive that is brought into the fracture by fracturing fluid and used to support the fracture in the oil field after the pressure is released. This led to the collapse and leakage of drilling wells in the hole oil field. [0003] The ideal fracturing proppant for oil and gas wells requires high carrying capacity and high sand ratio, so it needs to have the lowest possible density and the highest possible strength. Traditional fracturing proppants include quartz sand, ceramsite and their coated products. The outer coating is cured at high temperature with phenolic or epoxy resin. The amount of curing agent is generally 5-50% of the resin. The membrane temperature is around 230°C. The traditional fracturing proppant has high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/80
CPCC09K8/805
Inventor 熊帆熊鹰王正力
Owner CHONGQING CHANGJIANG RIVER MOLDING MATERIAL GRP
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