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Method for preparing self-suspended hydraulic fracturing proppant

A clean water fracturing and proppant technology, which is applied in chemical instruments and methods, earthwork drilling, mining fluids, etc., can solve the problems of high density and poor suspension of fracturing proppant

Inactive Publication Date: 2019-01-18
CHONGQING CHANGJIANG RIVER MOLDING MATERIAL GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for preparing self-suspending clear water fracturing proppant to solve the problem that the fracturing proppant prepared by the traditional method has high density, poor suspension, and is not easily carried into the well

Method used

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  • Method for preparing self-suspended hydraulic fracturing proppant
  • Method for preparing self-suspended hydraulic fracturing proppant
  • Method for preparing self-suspended hydraulic fracturing proppant

Examples

Experimental program
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Effect test

Embodiment 1

[0040] A method for preparing a self-suspending clear water fracturing proppant, comprising the following steps:

[0041] (1) Prepare the following raw materials in parts by mass: 100 parts of aggregate, 2 parts of resin, 1 part of curing agent, 0.01 part of catalyst, and 0.3 part of amine additive. The aggregate is 20 / 40 quartz sand, the resin is glycerol polymer, the curing agent is toluene diisocyanate, the catalyst is dibutyltin dilaurate, and the amine additive is diethylenetriamine.

[0042] (2) After heating the aggregate to 88°C, add resin and catalyst, and mix and stir;

[0043] (3) When the temperature drops to 78°C, add amine additives and stir to mix;

[0044] (4) When the temperature drops to 72°C, add a curing agent and mix and stir; when the temperature drops to 46°C, take it out of the pot to prepare a self-suspending clear water fracturing proppant.

[0045] The surface of the self-suspending clear water fracturing proppant prepared by this method has bulges...

Embodiment 2

[0047] A method for preparing a self-suspending clear water fracturing proppant, comprising the following steps:

[0048] (1) Prepare the following raw materials in parts by mass: 100 parts of aggregate, 2.5 parts of resin, 1 part of curing agent, 0.015 part of catalyst, and 0.4 part of amine additive. The aggregate is 30 / 50 quartz sand, the resin is propylene glycol polymer, the curing agent isophorone diisocyanate, the catalyst is tributyltin, and the amine additive is ethylenediamine.

[0049] (2) After heating the aggregate to 82°C, add resin and catalyst, and mix and stir;

[0050] (3) When the temperature drops to 72°C, add amine additives and stir to mix;

[0051] (4) When the temperature drops to 67°C, add a curing agent and mix and stir; when the temperature drops to 45°C, take it out of the pot to prepare a self-suspending clear water fracturing proppant.

[0052] The surface of the self-suspension clear water fracturing proppant prepared by this method has bulges ...

Embodiment 3

[0054] A method for preparing a self-suspending clear water fracturing proppant, comprising the following steps:

[0055] (1) Prepare the following raw materials in parts by mass: 100 parts of aggregate, 3 parts of resin, 2 parts of curing agent, 0.02 part of catalyst, and 0.4 part of amine additive. The aggregate is 40 / 70 quartz sand, the resin is propanol polymer, the curing agent is diphenylmethane diisocyanate, the catalyst is lead isooctanoate, and the amine additive is diethylenetriamine.

[0056] (2) After heating the aggregate to 82°C, add resin and catalyst, and mix and stir;

[0057] (3) When the temperature drops to 72°C, add amine additives and stir to mix;

[0058] (4) When the temperature drops to 66°C, add a curing agent and mix and stir; when the temperature drops to 48°C, take it out of the pot to prepare a self-suspending clean water fracturing proppant.

[0059] The surface of the self-suspended clear water fracturing proppant prepared by this method has b...

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Abstract

The invention belongs to the field of compositions for enhancing the fracturing effect, and particularly discloses a method for preparing a self-suspended hydraulic fracturing proppant. Bulges havinga diameter of 100-500nm exist on the surface of the self-suspended hydraulic fracturing proppant, and about 4*10<7> bulges exist in each square millimeter. The preparation method comprises the following steps: (1) preparing the following raw materials: aggregates, resin, a curing agent, a catalyst and amine additives; (2) heating the aggregates to 80-90 DEG C, adding the resin and catalyst, and mixing and stirring; (3) adding the amine additives when the temperature is reduced to 70-80 DEG C, and stirring and mixing; and (4) adding the curing agent when the temperature is reduced to 65-75 DEGC, mixing and stirring, and removing from the pot when the temperature is reduced to 40-50 DEG C to prepare the self-suspended hydraulic fracturing proppant. The fracturing proppant prepared by usingthe method has good suspending performance, and can be easily carried into a well.

Description

technical field [0001] The invention belongs to the field of compositions for strengthening fracturing, and in particular relates to a preparation method of a self-suspending clear water fracturing proppant. Background technique [0002] Proppant refers to the liquid additive that is brought into the fracture by fracturing fluid and used to support the fracture in the oil field after the pressure is released. Collapse and seepage of well drilling in Cave oil field. [0003] The ideal fracturing proppant for oil and gas wells requires high carrying capacity and high sand ratio, so it needs to have the lowest possible density and the highest possible strength. Fracturing proppants prepared by traditional methods include quartz sand, ceramsite and their coated products. The outer coating is cured at high temperature with phenolic or epoxy resin. The amount of curing agent is generally 5-50% of the amount of resin. %, the coating temperature is around 230 degrees, the traditio...

Claims

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Application Information

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IPC IPC(8): C09K8/80
CPCC09K8/80C09K8/805
Inventor 熊帆熊鹰王正力陈秋庆
Owner CHONGQING CHANGJIANG RIVER MOLDING MATERIAL GRP
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