An experimental device for simulating multi-angle fracture network proppant settlement law

An experimental device and proppant technology, which is applied in the field of experimental devices for simulating the settling law of proppant in multi-angle fracture nets, can solve the problems of inability to adjust the structure, unable to reflect the structure of the fracture network, and not considering wall leakage, so as to achieve real and measured fractures. The effect of reliable data, easy cleaning and replacement of parts

Inactive Publication Date: 2017-09-08
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above-mentioned devices generally have the following problems: the structure cannot be adjusted according to the shape of the fracture network on site; the multi-level fracture network structure at the bottom of the well cannot be reflected; the wall leakage, formation confining pressure and other complex conditions that will inevitably appear in field fracturing operations are not considered

Method used

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  • An experimental device for simulating multi-angle fracture network proppant settlement law
  • An experimental device for simulating multi-angle fracture network proppant settlement law

Examples

Experimental program
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Effect test

Embodiment 1

[0039] like figure 1 , figure 2 As shown, an experimental device for simulating multi-angle dynamic fracture network proppant settlement rules includes artificial fractures, and each section of the artificial fractures consists of two parallel transparent organic glass plates 1, and the four sides of the organic glass plates 1 surround bolt holes 103, The upper and lower ends between the plexiglass plates 1 are all provided with sealing strips 2, and the outer sides of the upper and lower ends of the plexiglass plates 1 are all provided with pressure plates 3, and the three are connected and compressed by bolts to form a single closed space; the organic Part of the evenly distributed small holes 101 that can be plugged are set on the glass plate 1, and some of the small holes 101 can be selectively blocked according to the permeability of different formations, so that the loss ratio of the sand-carrying fluid is closer to the real wall leakage. ; The compressive capacity of ...

Embodiment 2

[0042]An experimental device as described in Example 1 is used to simulate the multi-angle dynamic fracture network proppant settlement law experiment, the steps are as follows:

[0043] (1) According to the quantity and viscosity required by the experiment, configure the sand-carrying fluid;

[0044] (2) Prepare the proppant required by the experiment;

[0045] (3) Adjust the branch joints at all levels to the desired test angle and fix them;

[0046] (4) According to the experimental requirements, adjust the opening and closing amount of the small holes on the plexiglass plate;

[0047] (5) Check the cleanliness of the device, if it is dirty, it should be cleaned before use;

[0048] (6) First inject the device with clear water to circulate, check the tightness of the device, and after confirming the seal, empty the device;

[0049] (7) uniformly mixing the sand-carrying liquid and the proppant in the sand mixing tank to form a mixed liquid; pumping the mixed liquid into ...

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Abstract

The invention relates to a simulated multi-angle joint network propping agent sinking law device. The simulated multi-angle joint network propping agent sinking law device comprises a plurality of organic glass plates; stripped and branch-shaped sealed space is formed due to connection of a plurality of manual cracks; factors such as the number, the length, the angle, the elasticity of the sealed space can be adjusted according to requirements; experiments can be intuitively observed through the organic glass plates and recording of the experiment data is convenient. According to the simulated multi-angle joint network propping agent sinking law device, conditions such as crack levels, crack shapes, relative angles, the crack length, wall surface losses and stratum confining pressure are fully taken into consideration, an experiment of paving conditions of the propping agent in a manual crack can truly simulate scene conditions, the experiment effect is improved, and site fracturing operation can be guided.

Description

technical field [0001] The invention relates to an experimental device for simulating the subsidence law of a multi-angle fracture network proppant, which belongs to the technical field of oil and gas field development. Background technique [0002] With the massive exploitation of oil and gas fields at home and abroad, more and more low-permeability and tight oil and gas reservoirs are difficult to be exploited by conventional methods. Unconventional oil and gas resources, including shale gas, often require hydraulic fracturing to stimulate production. In order to achieve high yield in hydraulic fracturing technology, one of the ways is to make shale form a fracture network structure. However, due to the stress of the formation, if there is no proppant to fill the fractures in the well-pressed formation, after the fracturing fluid flows back The fracture will be closed again; the proppant is natural sand or artificial high-strength ceramic particles with a certain particle...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M10/00
Inventor 李骏赵立强刘平礼罗志峰李年银李化钱权李珍明何思源王江何昱宁郭玉杰
Owner SOUTHWEST PETROLEUM UNIV
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