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Experimental apparatus and method for simulating laying of propping agent and backflow of fracturing fluid

An experimental device and proppant technology, applied in teaching models, educational appliances, instruments, etc., can solve problems such as lack of experimental devices for proppant placement and fracturing fluid flowback

Inactive Publication Date: 2016-12-14
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides an experimental device and method for simulating proppant laying and fracturing fluid flowback, which is used to solve the technical problem of lack of experimental devices for proppant laying and fracturing fluid flowback in the prior art

Method used

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  • Experimental apparatus and method for simulating laying of propping agent and backflow of fracturing fluid
  • Experimental apparatus and method for simulating laying of propping agent and backflow of fracturing fluid
  • Experimental apparatus and method for simulating laying of propping agent and backflow of fracturing fluid

Examples

Experimental program
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Embodiment 1

[0058] Embodiment 1 of the present invention provides an experimental device for simulating proppant laying and fracturing fluid flowback. figure 1 It is a schematic structural diagram of an experimental device for simulating proppant laying and fracturing fluid flowback provided in Embodiment 1 of the present invention. figure 2 for figure 1 The top view of the middle box and the water chamber.

[0059] Such as figure 1 and figure 2 As shown, the experimental device for simulating proppant laying and fracturing fluid flowback in this embodiment may include: a first plate 1, a second plate 2, and a frame 3;

[0060] The first flat plate 1 and the second flat plate 2 are arranged in parallel, and the first flat plate 1, the second flat plate 2 and the frame 3 form a sealed box;

[0061] Both the first flat plate 1 and the second flat plate 2 are transparent, and are used for the user to observe the situation inside the box;

[0062] A transparent built-in flat plate 4 is...

Embodiment 2

[0090] Embodiment 2 of the present invention provides an experimental device for simulating proppant laying and fracturing fluid flowback. In this embodiment, on the basis of the device provided in Embodiment 1, a liquid storage tank 14 for supplying fracturing fluid during the flowback experiment is added.

[0091] image 3 It is a schematic structural diagram of an experimental device for simulating proppant laying and fracturing fluid flowback provided in Example 2 of the present invention. Figure 4 for image 3 The top view of the middle box and the water chamber.

[0092] In the device provided in this embodiment, the structures and connections of the first flat plate 1, the second flat plate 2, the frame 3, the built-in flat plate 4, the first water holding chamber 5, and the second water holding chamber 6 are the same as those in the embodiment. One is similar and will not be repeated here. On this basis, a fluid storage tank 14 for containing fracturing fluid is a...

Embodiment 3

[0100] Embodiment 3 of the present invention provides an experimental method for simulating proppant laying and fracturing fluid flowback. Figure 5 It is a flow chart of the experimental method for simulating proppant laying and fracturing fluid flowback provided in Embodiment 3 of the present invention. Such as Figure 5 As shown, the method in this embodiment may include:

[0101] Step 301, adjusting the distance between the first plate and the built-in plate according to the field crack parameters.

[0102] Step 302, closing the connecting seam between the second water storage chamber and the cavity, and connecting the first water storage chamber to the sand mixer through a pump.

[0103] Step 303 : Pump the mixture of proppant and fracturing fluid in the sand mixer into the cavity through the first water chamber according to the construction displacement on site.

[0104] Step 304: After the proppant is accumulated and filled in the cavity to form a sand embankment, ob...

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Abstract

The invention provides an experimental apparatus and method for simulating laying of a propping agent and backflow of fracturing fluid. The apparatus comprises a first panel, a second panel and a frame; the first panel and the second panel are arranged in parallel; a sealed box body is formed by the first panel, the second panel and the frame; both the first panel and the second panel are transparent and are used for a user to observe the situation in a box; a transparent built-in panel is arranged in the box body; the built-in panel is in parallel with the first panel, and a cavity is formed between the built-in panel and the first panel; the cavity is used for simulating a crack; a first water containing cavity for simulating a shaft and a second water containing cavity for simulating a tip of the crack are respectively formed at left and right ends of the box body; the first water containing cavity and the second water containing cavity are respectively communicated with the cavity by communication gaps. The experimental apparatus and method provided by the invention can be convenient for the user to carry out an experiment of simulating laying of the propping agent and backflow of the fracturing fluid, and have the guiding significance for the hydraulic fracturing practical activity of the oilfield mine.

Description

technical field [0001] The invention relates to oil and gas field development technology, in particular to an experimental device and method for simulating proppant laying and fracturing fluid flowback. Background technique [0002] With the further development of society, the demand for oil in the world is increasing day by day. The development of large-scale integrated oilfields and high-permeability blocks has entered the late stage of high water cut. At this time, it is very necessary to develop low-permeability and ultra-low-permeability oil and gas reservoirs. As a stimulation technology, hydraulic fracturing can form a Fractures with high conductivity, thereby increasing well production, play a very important role in the development of low-permeability reservoirs. [0003] The laying of proppant is a very important link in the hydraulic fracturing process. The proppant is carried into the fracture by the fracturing fluid, and plays a supporting role in the fracture w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B25/02
CPCG09B25/02
Inventor 马新仿张一诺邹雨时王雷李宁陈铭李四海高加印刘自中
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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