Film-coated modified propping agent, and preparation method and application thereof

A proppant and modification technology, which can be used in earth-moving drilling, fluid production, wellbore/well components, etc., and can solve problems such as reducing fracture conductivity.

Inactive Publication Date: 2013-02-27
亿利沙材料科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These fine silts migrate in the fractures and block the flow

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Accurately weigh raw materials (Kg): Kubuqi quartz sand with a particle size of 0.106mm-3.35mm 100, bisphenol A epoxy resin 0.85, aliphatic polyamine curing agent 0.1, r-aminopropyl triethyl Oxysilane 0.05.

[0026] The preparation method of the described film-coated modified proppant consists of the following steps:

[0027] (a) Heat the Kubuqi quartz sand to 200-300°C and pour it into the sand mixer;

[0028] (b) When the Kubuqi quartz sand is 180-200°C, add a hydrophobic polymer and stir for 30-90s;

[0029] (c) Add resin binder and stir for 60-100s;

[0030] (d) Add curing agent and stir for 100-180s to completely disperse the desert sand;

[0031] (e) cooling, sieving, sealing and packaging.

Embodiment 2

[0033] Accurately weigh raw materials (Kg): Kubuqi quartz sand with a particle size of 0.106mm-3.35mm 100, polyurethane resin 2.15, aliphatic polyamine curing agent 0.81, r-glycidyl ether oxypropoxypropyl trimethyl Oxysilane 0.04.

[0034] The preparation method of the described film-coated modified proppant consists of the following steps:

[0035] (a) Heat the Kubuqi quartz sand to 200-300°C and pour it into the sand mixer;

[0036] (b) When the Kubuqi quartz sand is 180-200°C, add a hydrophobic polymer and stir for 30-90s;

[0037] (c) Add resin binder and stir for 60-100s;

[0038] (d) Add curing agent and stir for 100-180s to completely disperse the desert sand;

[0039] (e) cooling, sieving, sealing and packaging.

Embodiment 3

[0041] Accurately weigh raw materials (Kg): 100 Kubuqi quartz sand with a particle size of 0.106mm-3.35mm, a total of 3.85 polyurethane resin and bisphenol A epoxy resin, polyurethane resin accounting for 5wt%, alicyclic polyamines Curing agent 2.8, N-(β-aminoethyl)-r-aminopropylmethyldimethoxysilane 0.35.

[0042] The preparation method of the described film-coated modified proppant consists of the following steps:

[0043] (a) Heat the Kubuqi quartz sand to 200-300°C and pour it into the sand mixer;

[0044] (b) When the Kubuqi quartz sand is 180-200°C, add hydrophobic polymer and stir for 30-60s;

[0045] (c) Add resin binder and stir for 60-100s;

[0046] (d) Add curing agent and stir for 100-180s to completely disperse the desert sand;

[0047] (e) cooling, sieving, sealing and packaging.

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Abstract

The invention discloses a film-coated modified propping agent, and a preparation method and an application thereof. The film-coated modified propping agent is composed of a matrix and a resin layer uniformly coated out of the matrix, wherein the matrix is Hobq quartz sand; the resin layer is 1-10 wt% based on that of the matrix; and the resin layer comprises a resin binder and a curing agent, wherein the resin binder is bisphenol A epoxy resin, polyurethane resin or a combination thereof, the curing agent is an aliphatic polyamine curing agent an oralicyclic amine curing agent, and the usage amount of the curing agent is 10-50 wt% based on that of the resin layer. The preparation method of the film-coated modified propping agent is that the resin layer is coated on the outer surface of the matrix. The film-coated modified propping agent can be applied in fields of fracturing exploitation of oil and gas wells, is helpful to increase sand ratio and reduce usage amount of fracturing liquid, can effectively prevent backflow phenomenon, alleviates insertion of the propping agent, increases crack diversion capability, prolongs fracturing validity period, is helpful to increase oil output, reduces water yield and has significant meaning for solving the exploitation of low permeability oil field.

Description

technical field [0001] The invention relates to a film-coated modified proppant used in the field of petroleum and natural gas oil well fracturing and production, as well as its preparation method and application. Background technique [0002] Petroleum fracturing proppant is mainly used in oil and natural gas deep well mining, especially the material that must be used in oil and gas mining with a well depth of more than 2000 meters. Closed fracturing treatment to support fractures from closing due to stress release, allowing oil and gas to flow out from fracture channels, thereby maintaining high oil and gas conductivity, increasing oil and gas production, and extending oil and gas well services to increase the economic benefits of oil and gas production. [0003] At present, the proppants used in fracturing processes at home and abroad are mainly quartz sand and ceramsite, but quartz sand is the commonly used proppant at present, and the relative density is about 2.5. Be...

Claims

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Application Information

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IPC IPC(8): C04B26/16C04B26/14C09K8/80
Inventor 高双之仲晓东
Owner 亿利沙材料科技有限责任公司
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