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Kind of laminated granule for oil extraction, proppant and oil extraction method using the proppant

A granular and film-coated technology, which is applied in chemical instruments and methods, mining fluids, earth drilling and production, etc., can solve the problem of low crude oil yield, achieve the effect of increasing oil production and reducing water yield

Inactive Publication Date: 2009-11-25
BEIJING RECHSAND SCI & TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a film-coated particle for oil recovery, a fracturing proppant with the film-coated particle, and an oil recovery method using the fracturing proppant. Proppant oil and water can permeate the cracking proppant, and the crude oil yield is low

Method used

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  • Kind of laminated granule for oil extraction, proppant and oil extraction method using the proppant
  • Kind of laminated granule for oil extraction, proppant and oil extraction method using the proppant
  • Kind of laminated granule for oil extraction, proppant and oil extraction method using the proppant

Examples

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Effect test

Embodiment 1

[0057] Heat 3kg of quartz sand particles 20 / 40 mesh to 250°C and put them into a sand mixer for stirring. After that, cool down to 200°C, add 0.15kg of polyamide resin modified epoxy resin, and stir well to make the resin evenly distributed in the The outer surface of the quartz sand particles is then solidified by adding an aliphatic amine curing agent, and finally cooled and crushed to obtain the coated particles of the present invention.

Embodiment 2

[0058] Embodiment 2: In above-mentioned embodiment 1, before adding curing agent, add plasticizer phthalate, its weight ratio with resin is 1: 10, and fully stir, other is the same as embodiment 1.

Embodiment 3

[0059] Embodiment 3: in above-mentioned embodiment 1, add lubricant polyethylene wax before resin begins to solidify and begin agglomeration (block), and its weight ratio with resin is 1: 50, and stir, other and embodiment 1 same.

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Abstract

The invention discloses a kind of laminated granule for oil extraction, proppant having the laminated granule and oil extraction method using the proppant. The laminated granule comprises aggregate granules and oil permeating waterproof thin film coated on surface of the aggregate granules. The oil permeating waterproof thin film comprises resin. Weight ratio of the resin to quartz sand is 0.2-15:100. The laminated granule is oil permeating waterproof granule. The oil permeating waterproof thin film is one formed by one or more of oleophylic hydrophobic ethoxyline resin, phenolic resin, polyurethane resin and silicon resin. The laminated quartz sand and proppant thereof are oil permeating and water proof at regular atmospheric pressure. Oil permeation resistance in pressurized condition is less than water permeation resistance. Therefore, in oil extraction industry, water yield is reduced effectively and oil yield is improved.

Description

technical field [0001] The invention relates to the technical field of oil recovery, in particular to film-coated particles for oil recovery, a fracturing proppant with the film-coated particles and the application of the fracturing proppant in oil recovery. Background technique [0002] With the rapid development of my country's national economy, oil consumption is increasing year by year. On the one hand, there is a shortage of oil resources, on the other hand, the oil recovery rate is not high, and the waste in the development process is serious. At present, the oil field has entered the stage of high water cut exploitation, with high water cut and rapid increase in water cut rate. By the end of 2000, the comprehensive water cut of the whole oil field reached 87%, and the water cut of the main oil layers produced by the basic well pattern has reached 90-95%, and the production cost has increased year by year. [0003] Fracturing technology is the main measure to increase...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/80E21B43/267
CPCC09K8/805E21B43/267C04B41/455
Inventor 秦升益
Owner BEIJING RECHSAND SCI & TECH GRP
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