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Oil-based shale cuttings proppant and preparation method thereof

A technology of proppant and cuttings, applied in the field of oil and gas field development and research, to solve the problem of environmental pollution, realize the effective utilization of waste, and the effect of simple process

Active Publication Date: 2021-02-09
CHINA UNIV OF PETROLEUM (BEIJING) +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the existing proppant, the proppant has a structure similar to the original formation, which is more conducive to the transportation of the proppant in the formation, and at the same time realizes the effective utilization of waste, which is conducive to solving the problem of environmental pollution

Method used

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  • Oil-based shale cuttings proppant and preparation method thereof
  • Oil-based shale cuttings proppant and preparation method thereof
  • Oil-based shale cuttings proppant and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0034] This embodiment provides a method for preparing an oil-based shale cuttings proppant, comprising the following steps:

[0035] 1. Add 5g of phenolic resin to 50ml of ethanol, stir magnetically for 15 minutes to obtain a binder solution, then add 5g of oil-based shale cuttings to it, and stir mechanically for 15 minutes to obtain a cuttings mixed solution.

[0036] 2. Add 25g of industrial ceramsite into the cuttings mixed solution, mechanically stir for 60s, filter, wash with deionized water, and dry at a drying temperature of 40°C-100°C to obtain an oil-based shale cuttings proppant.

[0037] figure 1 SEM image of the oil-based shale cuttings proppant prepared for this example. From figure 1 It can be seen from the figure that the surface of oil-based shale cuttings is smooth, and the original unevenness on the surface of industrial ceramsite is basically filled by oil-based shale cuttings and binder to become a round sphere.

[0038] figure 2 , image 3 It is th...

Embodiment 2

[0041] This embodiment provides a method for preparing an oil-based shale cuttings proppant, comprising the following steps:

[0042] 1. Add 10g of phenolic resin to 50ml of ethanol, stir magnetically for 15 minutes to obtain a binder solution, then add 15g of oil-based shale cuttings to it, and stir mechanically for 15 minutes to obtain a cuttings mixed solution.

[0043] 2. Add 15g of industrial ceramsite into the cuttings mixed solution, mechanically stir for 600s, filter, wash with deionized water, and dry at a drying temperature of 40°C-100°C to obtain an oil-based shale cuttings proppant.

[0044] Figure 5 SEM image of the oil-based shale cuttings proppant prepared for this example. From Figure 5 It can be clearly observed that the surface of the proppant is covered with relatively thick oil-based shale cuttings and binder.

Embodiment 3

[0046]This embodiment provides a method for preparing an oil-based shale cuttings proppant, comprising the following steps:

[0047] 1. Add 10g of phenolic resin to 50ml of ethanol, stir magnetically for 15 minutes to obtain a binder solution, then add 10g of oil-based shale cuttings to it, and stir mechanically for 15 minutes to obtain a cuttings mixed solution.

[0048] 2. Add 25g of industrial ceramsite into the cuttings mixed solution, mechanically stir for 3 hours, filter, wash with deionized water, and dry at a drying temperature of 40°C-100°C to obtain the oil-based shale cuttings proppant.

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Abstract

The invention provides an oil-based shale cuttings proppant and a preparation method thereof. In the preparation method, oil-based shale cuttings and ceramsite are sequentially added to a binder solution or a liquid binder, and are filtered, washed and dried to obtain the oil-based shale cuttings proppant. The present invention also provides an oil-based shale cuttings proppant, which is obtained by the above preparation method. The preparation method provided by the present invention has a simple process, and the prepared oil-based shale cuttings proppant has controllable density and surface shell thickness, and its structure is similar to that of the formation, which is more conducive to the transportation of the proppant in the formation, and at the same time effectively utilizes the waste, which is conducive to solving the problem of environmental pollution.

Description

technical field [0001] The invention relates to oil and gas field development research, in particular to an oil-based rock cuttings proppant and a preparation method thereof. Background technique [0002] During the continuous development of shale gas in my country, a large amount of drilling waste such as oily cuttings has been produced. The existing disposal technology of these wastes has caused a certain impact on the ecological environment, and does not have the ability of high-efficiency and large-scale industrial treatment. Therefore, there is an urgent need to develop new methods for the harmless treatment of oily rock debris in China. [0003] At present, the deep well reinjection technology has been widely used in the oil and gas energy field and other industrial waste treatment in Europe and the United States. Oil and gas trap resources have been effectively utilized. During the long-term oil and gas exploration and development in Southwest Oil and Gas Field, a la...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/80
CPCC09K8/80
Inventor 徐泉陆朝晖田守嶒盛茂李大华杨德敏
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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