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Simulated multi-angle joint network propping agent sinking law device

A proppant and multi-angle technology, which is applied in the field of simulating multi-angle fracture network proppant settlement law, can solve the problems of not considering wall leakage, failure to reflect fracture network structure, and structure adjustment, etc., to achieve easy cleaning and replacement of parts , The measured data is reliable and the cracks are real

Inactive Publication Date: 2015-07-22
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Simulated multi-angle joint network propping agent sinking law device
  • Simulated multi-angle joint network propping agent sinking law device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Such as figure 1 , figure 2 As shown, a device for simulating multi-angle dynamic fracture network proppant settlement rules includes artificial fractures. Each section of the artificial fractures includes 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 provided with sealing strips 2, and the outer sides of the upper and lower ends of the plexiglass plates 1 are provided with pressure plates 3, and the three are connected and compressed by bolts to form a single closed space; the organic glass Part of the evenly distributed small holes 101 that can be plugged are set on the plate 1, and some of the small holes 101 can be selectively blocked according to different formation permeability conditions, so that the loss ratio of the sand-carrying liquid is closer to the real wall leakage situation; The compressive capacity of the plexiglass...

Embodiment 2

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

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

[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 the device a...

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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 a 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 size and grad...

Claims

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Application Information

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IPC IPC(8): G01M10/00
Inventor 罗志峰朱海颜李骏楚飞蒋龙郝鹏郭玉杰吴龙飞赵立强刘平礼李年银
Owner SOUTHWEST PETROLEUM UNIV
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