Oil-permeable water-blocking type propping agent and preparation method thereof

A proppant and water-blocking technology, which is applied in chemical instruments and methods, earth drilling, production fluids, etc., can solve the problems of increasing oil costs and reducing oil benefits, so as to improve production and grade, good lipophilicity and hydrophobicity, The effect of increasing oil output

Inactive Publication Date: 2016-12-07
XINMI WANLI IND DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional proppants have high permeability to oil and water, including the current film-coated proppants. As we mentioned earlier, high water permeability will increase the cost of oil extraction and reduce the benefit of oil

Method used

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  • Oil-permeable water-blocking type propping agent and preparation method thereof
  • Oil-permeable water-blocking type propping agent and preparation method thereof
  • Oil-permeable water-blocking type propping agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for preparing an oil-permeable and water-repelling proppant, comprising the following steps:

[0028] (1) Add 0.5g of Aquolin® 161 and 30g of nano-titanium dioxide to 500g of polyurethane solution, ultrasonically disperse for 30 minutes to obtain a suspension with nanoparticles dispersed; wherein, the polyurethane solution is made of Adwel® 1650 dissolved in ethyl acetate Obtained in the polyurethane solution, the mass percent of polyurethane is 5%;

[0029] (2) Weigh 1kg of quartz sand and put it into the resin sand mixer, heat it to 180°C, add 0.5g of aminopropyltriethoxysilane (KH550) under the condition of heat preservation and stirring, and add 60g of bisphenol A epoxy after 20s Resin, then add 3g dimethyl phthalate and 4g carbon black in turn, continue to stir for 30s, add 5g triethylenetetramine, there are signs of dispersion when stirring for 10min, add 1g calcium stearate, disperse for 10s, discharge and cool to room temperature and sieved to obtain t...

Embodiment 2

[0041] A method for preparing an oil-permeable and water-repelling proppant, comprising the following steps:

[0042](1) Add 0.6g of Aquolin® 161 and 30g of nano-polystyrene to 500g of polyurethane solution, ultrasonically disperse for 30 minutes to obtain a suspension with nanoparticles dispersed; wherein, the polyurethane solution is made of Adwel® 1645 dissolved in acetic acid Obtain in ethyl ester, the mass percent of polyurethane in the polyurethane solution is 5%;

[0043] (2) Weigh 1kg of ceramsite and put it into the resin sand mixer, heat it to 180°C, add 0.5g of methacryloxypropyltrimethoxysilane (KH570) under the condition of heat preservation and stirring, and add 60g of bismuth after 20s Phenol A epoxy resin, then add 3g dibutyl phthalate, 4g carbon black in turn, continue stirring for 30s, add 5g diethylenetriamine, there are signs of dispersion when stirring for 10min, add 1g zinc stearate, disperse for 10s, Discharge, cool to room temperature, and sieve to obt...

Embodiment 3

[0047] A method for preparing an oil-permeable and water-repelling proppant, comprising the following steps:

[0048] (1) Add 0.7g of Aquolin® 161 and 40g of nano-titanium dioxide to 500g of polyurethane solution, ultrasonically disperse for 30 minutes to obtain a suspension with dispersed nanoparticles; wherein, the polyurethane solution is made of Adwel® 1650 dissolved in ethyl acetate Obtained in the polyurethane solution, the mass percent of polyurethane is 5%;

[0049] (2) Weigh 1kg of quartz sand and put it into the resin sand mixer, heat it to 180°C, add 1g of aminopropyltriethoxysilane (KH550) under the condition of heat preservation and stirring, and add 40g of bisphenol A epoxy resin after 20s , then add 5g dimethyl phthalate and 6g alcohol-soluble black dye in turn, continue to stir for 30s, add 4g triethylenetetramine, there are signs of dispersion when stirring for 10min, add 3g calcium stearate, disperse for 10s, discharge, Cool to room temperature and sieve to ...

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Abstract

The invention discloses an oil-permeable water-blocking type propping agent and a preparation method thereof. Firstly, a polyurethane curing agent and nano-particles are added into the polyurethane solution, the mixture is subjected to ultrasonic dispersion for 20-40 minutes to obtain a suspension solution with dispersed nano-particles; a silane coupling agent, a thermoplastic resin, a plasticizer, a coloring agent and an amine curing agent are added into the aggregate in turn under the conditions of 110-200 DEG C thermal insulation and stirring, the mixture is stirred for 5-10 min and then a dispersing agent is added, the mixture is continuously stirred until the dispersing agent is uniformly dispersed, discharging, cooling and sieving are performed to obtain a coated propping agent; the coated propping agent is arranged in the suspension solution with dispersed nano-particles, soaked for 30 min, then filtered and dried to obtain the oil-permeable water-blocking type propping agent. The propping agent has good lipophilicity and hydrophobicity, the oil yield of crude oil is increased, the flow guiding capacity of the crude oil is greatly improved, the oil exploitation is facilitated, and the propping agent is very important for improving the yield and grade of crude oil in China.

Description

technical field [0001] The invention belongs to the technical field of oilfield chemistry, and in particular relates to an oil-permeable and water-repelling proppant and a preparation method thereof. Background technique [0002] With the rapid development of the industrialization level of human society, petroleum resources are becoming more and more important in human life. Wars triggered by plundering of oil resources have occurred from time to time. With a large number of mining operations, oil resources are gradually becoming scarce, and the recovery rate of oil is not as good as before. The proportion of water to oil gradually increases, which leads to an increase in production costs and a sharp decline in production benefits. [0003] Since hydraulic fracturing technology was successfully tested in the United States for the first time in 1947, fracturing has always been a process that has attracted more attention in oil extraction. During this period, oil proppant ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/80C04B26/14C04B41/83C04B41/85
CPCC09K8/805C04B26/14C04B41/4884C04B41/5072C04B41/83C04B41/85
Inventor 王长太张东言王万里黄永伟
Owner XINMI WANLI IND DEV
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