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A self-suspending proppant for clear water fracturing system

A clear water fracturing and self-suspension technology, which is applied in the direction of drilling compositions, chemical instruments and methods, etc., can solve the problems of high cost, large amount of organic materials used, environmental pollution, etc., to reduce the damage to the formation environment, improve Effect of oil and gas production and reduction of fracturing costs

Active Publication Date: 2021-03-02
XINMI WANLI IND DEV
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Problems solved by technology

[0006] The purpose of the present invention is to provide a proppant product with high self-suspension ability suitable for clear water fracturing systems, so as to overcome the large amount of organic materials used in existing proppant products, high cost, and easy to cause environmental pollution defects, it is convenient for oil and gas exploration construction application

Method used

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  • A self-suspending proppant for clear water fracturing system

Examples

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Effect test

Embodiment 1

[0051] The self-suspending proppant applied to the clear water fracturing system provided in this example is prepared by the following steps:

[0052] (1) Prepare gelatinized starch, specifically, add deionized water to cornstarch to prepare a starch solution with a mass fraction of 10%, add 1g sodium hydroxide to 300mL starch solution, place in a constant temperature water bath at 80°C for 2 hours, and cool to room temperature After that, it is gelatinized starch;

[0053] In this step, starch:sodium hydroxide=30:1 in parts by mass.

[0054] (2) Preparation of hydrogel materials, the specific process is:

[0055] First, the reaction device is installed, specifically, a stirrer, a reflux condenser, a thermometer, a nitrogen inlet and outlet pipe and a dropping funnel are installed on a 500mL four-necked flask;

[0056] Secondly, under the condition of constant temperature water bath at 65°C, add 4g of emulsifier (span-80) and 150mL of cyclohexane to the four-neck flask succe...

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Abstract

The application belongs to the technical field of oil and gas exploitation, and in particular relates to a proppant with relatively high self-suspension ability applied to a clear water fracturing system. The self-suspending proppant is prepared through multiple steps of starch gelatinization, hydrogel preparation, mixing resin preparation, proppant preparation and the like. Compared with the existing proppant products, the present invention gets rid of the restriction that the traditional proppant must rely on the use of guar gum and drag-reducing agent. When the proppant provided by the present invention is used, the proppant can be directly transported to the corresponding formation by natural water. The proppant product provided by the present invention can not only reduce the cost of fracturing in the process of oil and gas exploitation, but also reduce the damage to the formation environment in the process of oil and gas exploitation due to the good environmental performance of the material, and it has a certain improvement The advantages of oil and gas production, so it has good promotion and application value.

Description

technical field [0001] The application belongs to the technical field of oil and gas exploitation, and in particular relates to a proppant with relatively high self-suspension ability applied to a clear water fracturing system. Background technique [0002] In 1947, hydraulic fracturing technology was first used in fracturing engineering in the United States. The main technical principle is: under the condition of high closure pressure of low-permeability ore deposits, oil and gas-bearing rock formations are fractured, and the oil and gas contained in the ore deposits can be released from the fracturing process. The outflow is collected in the formed fractures, so as to realize the exploitation of oil and gas. After nearly 70 years of development history, hydraulic fracturing technology has become a mature production technology and is widely used in oil and gas production. [0003] In order to avoid geological subsidence in the process of oil and gas exploitation, proppant ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/90C09K8/92
CPCC09K8/90C09K8/92
Inventor 王长太张东言王万里黄永伟
Owner XINMI WANLI IND DEV
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