Integrated proppant flat plate conveying experimental device and preparation method thereof

An experimental device and proppant technology, applied in the field of hydraulic fracturing, can solve the problems of complex installation and disassembly of flat plates and cannot be covered, and achieve the effects of high production efficiency, easy operation, and avoiding installation and disassembly.

Pending Publication Date: 2022-03-18
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing devices are mainly aimed at improving one of the above aspects, and cannot cover all the above factors
Moreover, once more factors are considered, the problem of complicated installation and disassembly of the flat panel will follow.

Method used

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  • Integrated proppant flat plate conveying experimental device and preparation method thereof
  • Integrated proppant flat plate conveying experimental device and preparation method thereof
  • Integrated proppant flat plate conveying experimental device and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] In the existing proppant slab transport experiments, multiple factors such as fracturing fluid loss, fracture roughness, number and angle of secondary fractures, variable fracture width, etc. cannot be considered together, and the existing proppant slab support device needs to be installed and disassembled , in order to solve the above problems, the present invention and the embodiments of the present invention provide a kind of integrated proppant plate conveying experimental device, such as figure 1 As shown, it includes a main artificial fracture unit 1, two secondary artificial fractures 2, and a fracture filtration unit 3; the main artificial fracture unit and the secondary artificial fracture unit are composed of plexiglass plates, and the plexiglass plates are of an integrated structure , presenting a continuous, integral and multi-branched spatial form;

[0046] The plexiglass plate of the main artificial crack unit is 1m long, 0.1m high, and has a maximum thick...

Embodiment 2

[0053] The present invention also provides a method for preparing an integrated proppant plate delivery experimental device, comprising the following steps:

[0054] (1) According to the fracture shape simulated by the fracturing software, design and prepare the mold required for the production of the plate;

[0055] (2) Prepare 3L of methyl methacrylate monomer and 5g of initiator in a flask, dissolve the two by magnetic stirring, raise the temperature of the system to 80°C through an electric heating mantle, and observe that the viscosity of the system increases to gel After the shape, the heating was stopped, and the prepolymer was obtained after rapid cooling to room temperature.

[0056] (3) Evenly and slowly pour half the volume of the prepolymer obtained in the previous step into the mold, and continue to polymerize the prepolymer in the mold at a temperature of 55 ° C. The polymerization reaction time is 3-4 hours, until the material in the mold is Hard gelatinous sol...

Embodiment 3

[0061] When using the integrated proppant plate transport experimental device of the present invention, the experiment needs to be carried out through the following steps:

[0062] (1) According to the similar principle and based on the site hydraulic fracturing construction design data, the proppant dosage required for the calculation experiment is 80g, the fracturing fluid volume is 800ml, and the fracturing fluid displacement is 30ml / min;

[0063] (2) Prepare fracturing fluid and prepare multiple proppants according to the materials required for the experiment calculated in step (1);

[0064] (3) select the 40-70 purpose quartz sand proppant in the step (2) to mix and stir with the guar gum fracturing fluid, and pump the sand-carrying fracturing fluid into the liquid inlet of the experimental device;

[0065] (4) Track the migration trajectory of the proppant in the main artificial fracture unit and the secondary artificial fracture unit, collect the fluid lost by guar gum ...

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Abstract

The invention discloses an integrated proppant flat plate conveying experimental device and a preparation method thereof. The experimental device comprises a main artificial fracture unit, a plurality of secondary artificial fracture units and a fracture filtration unit. The artificial crack unit is composed of an organic glass flat plate which is of an integrated structure, the surface of the organic glass flat plate is uneven, and the organic glass flat plate is in a continuous, integral and multi-branch spatial form. According to the device, factors such as the number and angle of the secondary artificial fractures, the roughness of the wall surfaces of the fractures, the change of the width of the fractures and the filtration loss of fracturing fluid are fully considered, and the form of the underground complex fractures is simulated more truly. The invention further discloses a preparation method of the integrated proppant flat plate conveying experimental device, the method is simple in processing process, the integrated design avoids mounting and dismounting of a plurality of crack flat plates, and experimental operation is more convenient and faster.

Description

technical field [0001] The invention belongs to the field of hydraulic fracturing in oil exploitation, and in particular relates to an integrated proppant flat plate conveying experimental device and a preparation method thereof. Background technique [0002] Hydraulic fracturing is an important stimulation method for low porosity, low permeability and very oil and gas resources. The effective placement of proppant in hydraulic fractures is one of the key factors determining the conductivity of complex fractures and the stimulation effect of fracturing stimulation. Therefore, scientifically revealing the settlement law and placement of proppant in complex fractures plays an important role in the success of hydraulic fracturing. [0003] At present, indoor experiments to study the transport and laying rules of fracturing proppant in fractures are mainly realized by proppant plate delivery device. In order to more accurately simulate the characteristics of complex fractures ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M10/00
CPCG01M10/00
Inventor 朱静怡杨兆中李小刚廖梓佳郑南鑫
Owner SOUTHWEST PETROLEUM UNIV
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