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Propping agent and preparation method thereof

A proppant and solvent technology, applied in the field of proppant and its preparation, can solve the problems of low fracture rate, low conductivity, low proppant strength, and inability to use reservoirs, etc., and achieves easy acquisition, simple preparation method, and wide application range. Effect

Active Publication Date: 2011-11-09
内蒙古仁创沙产业有限公司
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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 overcome the disadvantages of the prior art that the proppant has low strength, easy to break, poor flow conductivity, and cannot be applied to reservoirs under medium to high closure pressures, and to provide a reservoir that can be applied to medium to high closure pressures , and a proppant with high strength, low crushing rate and excellent flow conductivity and its preparation method

Method used

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Examples

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Effect test

preparation example Construction

[0014] The present invention also provides a preparation method of a proppant, which comprises mixing the silica sand and the inorganic binder uniformly in the presence of a solvent, and then putting them into an oven at 140-160°C for 1.5-2.5 hours, Mix well with organic binder at 190-210°C and cool to room temperature.

[0015] In order to mix the inorganic binder and the silica sand evenly, a solvent needs to be added, the solvent is preferably water, and there is no special limitation on the amount of the solvent. Preferably, based on 100 parts by weight of the silica sand, the amount of the solvent is 5 -10 parts by weight.

Embodiment 1

[0018] Preparation of proppant

[0019] With 200 parts by weight of silica sand (purchased from Yongdeng Blue Sky Quartz Sand Co., Ltd., the specifications are roundness and sphericity ≥ 0.6, particle size is 0.85-0.425 mm), 5 parts by weight of aluminum dihydrogen phosphate, 10 parts by weight of water , 25 parts by weight of copper oxide mixed for 10 minutes, the resulting product was placed in an oven at 150°C for 2 hours, the resulting product was placed in a muffle furnace, and after heating to 200°C, 4 parts by weight of bisphenol A ring Oxygen resin (purchased from Zibo Shaohua Industry and Trade Co., Ltd., epoxy equivalent is 0.09-0.14mol / 100g) and 0.8 parts by weight of curing agent TGIC (purchased from Zibo Shaohua Industry and Trade Co., Ltd.), after stirring evenly, be cooled to The proppant can be obtained at room temperature.

Embodiment 2

[0021] Preparation of proppant

[0022] With 200 parts by weight of silica sand (purchased from Yongdeng Blue Sky Quartz Sand Co., Ltd., the specifications are roundness and sphericity ≥ 0.6, particle size is 0.85-0.425 mm), 5 parts by weight of aluminum dihydrogen phosphate, 10 parts by weight of water , 15 parts by weight of magnesium oxide mixed for 10 minutes, the resulting product was placed in a 150°C oven for 2 hours, the resulting product was placed in a muffle furnace, and after heating to 200°C, 4 parts by weight of bisphenol A ring Oxygen resin (purchased from Zibo Shaohua Industry and Trade Co., Ltd., epoxy equivalent is 0.09-0.14mol / 100g) and 0.8 parts by weight of curing agent TGIC (purchased from Zibo Shaohua Industry and Trade Co., Ltd.), then add 1 part by weight of Thermoplastic phenolic resin (purchased from Ningjin County Foundry Material Co., Ltd.) and 0.125 parts by weight of urotropine (China National Bluestar Group Shanghai Chemical New Material Co., Lt...

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Abstract

The invention relates to a propping agent, which comprises silica sand, an inorganic adhesive, and an organic adhesive. Based on 100 weight parts of silica sand, the content of the inorganic adhesive is 5 to 35 weight parts, and the content of the organic adhesive is 0.5 to 15 weight parts. The invention also provides a method for preparing the propping agent. The method comprises the following steps of: uniformly mixing the silica sand and the inorganic adhesive in the presence of a solvent, roasting in an oven at the temperature of between 140 and 160DEG C for 1.5 to 2.5 hours, uniformly mixing with the organic adhesive at the temperature of between 190 and 210DEG C, and cooling to room temperature. The propping agent can be applied to reservoir stratums under medium and high cloture pressure; and the propping agent has high strength, high crush resistance, and higher guiding capacity than ceramic particles; and the preparation method is simple, energy-saving, low in cost and wide in application range, and the silica sand is easily obtained.

Description

technical field [0001] The invention relates to a proppant and a preparation method thereof. Background technique [0002] Fracturing oil recovery is an important new technology for oil and natural gas low-permeability oil and gas wells. Proppant is the key material of fracturing oil recovery process. At present, the proppant widely used in oil fields is mainly ceramsite or quartz sand. Among them, ceramsite is suitable for medium and high closure pressure, but the ceramsite has a high breakage rate, and the crushed ceramsite in the reservoir is easy to migrate and has poor conductivity. In addition, ceramsite is made of bauxite as the main raw material and sintered at a high temperature above 800 °C. The production energy consumption of pellets is high. Quartz sand is only suitable for reservoirs with a closure pressure below 28MPa, and has poor conductivity and low strength, so its application range is narrow. Table 1 shows the performance and standard requirements of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/80
CPCY02P20/10
Inventor 秦升益胡宝苓王胜利王振邦
Owner 内蒙古仁创沙产业有限公司
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