Pressure-resistant quartz sand propping agent for fracturing and production method thereof

A technology of sand proppant and quartz sand, which is applied in chemical instruments and methods, earthwork drilling and production, wellbore/well components, etc., which can solve the problems of failure to meet the technical requirements of fracturing technology, rising oilfield development costs, and high production costs of ceramsite, etc. problems, achieve good anti-fragmentation effect, improve fracturing oil recovery effect, and increase compressive strength

Pending Publication Date: 2021-02-09
新疆科先油田技术服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high production cost of ceramsite, which is several times the cost of conventional quartz sand, the cost of oilfield development has increased
The technical index broken ra

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Embodiment 1: The pressure-resistant quartz sand proppant for fracturing is composed of: 3% to 10% sodium silicate, 0.02% to 2% epoxy resin, 0.01% to 2% sodium hydroxide, 0.03% to 3% urotropine, 0.03% to 3% ammonium chloride, 0.01% to 1% calcium stearate, and the rest of the washed quartz sand with a crushing rate of 16%.

Embodiment 2

[0013] Embodiment 2: The pressure-resistant quartz sand proppant for fracturing is composed of: 3% or 10% sodium silicate, 0.02% or 2% epoxy resin, 0.01% or 2% sodium hydroxide, 0.03% or 3% urotropine, 0.03% or 3% ammonium chloride, 0.01% or 1% calcium stearate, and the rest of the washed quartz sand with a crushing rate of 16%.

Embodiment 3

[0014] Embodiment 3: The pressure-resistant quartz sand proppant for fracturing The water-washed quartz sand is obtained by washing the quartz sand with a crushing rate of 16% and drying it at 120°C to 200°C.

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Abstract

The invention relates to the technical field of propping agents for fracturing in the oilfield development process, in particular to a pressure-resistant quartz sand propping agent for fracturing anda production method thereof; the pressure-resistant quartz sand propping agent for fracturing comprises: sodium silicate, epoxy resin, sodium hydroxide, urotropine, ammonium chloride, calcium stearateand washed quartz sand. The invention solves the problem that conventional quartz sand cannot resist pressure, the production method is simple, the quartz sand has a good anti-crushing effect, and the technical performance of the quartz sand can meet the technical requirements of a fracturing process. The fracture rate of the water separation quartz sand is increased to be smaller than or equal to 9% from 16%, that means the compressive strength of the obtained pressure-resistant quartz sand propping agent for fracturing is increased, cracks are not prone to closing, the permeability is high,oil gas is prone to flowing, more oil gas is produced, the crack flow conductivity can be effectively improved, and the fracturing effect is good. Therefore, the fracturing oil extraction effect is improved.

Description

technical field [0001] The invention relates to the technical field of proppant for fracturing in the oilfield development process, and relates to a pressure-resistant quartz sand proppant for fracturing and a production method thereof. Background technique [0002] Fracturing technology is an important measure to increase production in low-permeability oilfields. Proppants are used in fracturing technology to support fractures and improve fracture conductivity. When developing low-permeability oil fields, fracturing technology is needed to transform oil layers. The currently used proppants include conventional quartz sand and ceramsite. Due to the high production cost of ceramsite, which is several times the cost of conventional quartz sand, the cost of oil field development has increased. The technical index broken rate of quartz sand required for fracturing proppant is ≤9%, while the broken rate of conventional quartz sand is 16%, which cannot meet the technical requir...

Claims

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Application Information

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IPC IPC(8): C09K8/80
CPCC09K8/805
Inventor 王国瑞
Owner 新疆科先油田技术服务有限公司
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