Experiment device for simulating horizontal well deflagration fracturing and experiment method thereof

An experimental device and horizontal well technology, which is applied in the direction of testing the strength of materials using a single impact force, can solve the problems of research lag, restricted application, inability to pressurize core holes, etc., and achieves obvious effects, accurate experimental control operations, and good experimental results. Effect

Active Publication Date: 2017-07-14
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The unique structure of the horizontal well itself determines that the deflagration fracturing technology of the horizontal well is different from that of the vertical well. Lag, restricting the application of this technology in oilfield
[0006] At present, the research on the relative strain of the rock after being subjected to an instantaneous impact is mainly realized through the Hopkinson pressure bar (SHPB) experiment and related vertical damage devices. The rock core is impacted in the vertical direction, and the horizontal impact on the core cannot be realized

Method used

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  • Experiment device for simulating horizontal well deflagration fracturing and experiment method thereof
  • Experiment device for simulating horizontal well deflagration fracturing and experiment method thereof
  • Experiment device for simulating horizontal well deflagration fracturing and experiment method thereof

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Experimental program
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Embodiment 1

[0044] Such as Figure 1 to Figure 3 As shown, the present embodiment provides an experimental device for simulating horizontal well deflagration fracturing. The experimental device mainly includes three parts: a rock sample clamping device, a pendulum impact device and a control and analysis device; the rock sample clamping device is used to place For rock cores with different characteristics, the pendulum impact device is used to provide external force loading to the rock sample holding device to make the cores in different simulation environments, and the control analysis device is used to analyze various data of the rock cores in different simulation environments.

[0045] Wherein, the rock sample clamping device comprises a cylindrical cylinder body (1-15), and the cylinder body is placed horizontally, and the bottom of the cylinder bottom is provided with two supporting seats (1-11) for supporting the cylinder body, and the The end is provided with a left core plug and a...

Embodiment 2

[0051] An experimental device for simulating horizontal well deflagration fracturing, the structure is as described in Example 1, the difference is that the rubber sleeve (1-17) also passes through four inner support seats (1-16) distributed at equal intervals It is fixed in the inner cavity of the cylinder body (1-15). The inner support seat is mainly used as a reinforcement to provide greater support for the rubber sleeve and prevent the rubber sleeve from being crushed by the heavy experimental core.

Embodiment 3

[0053] An experimental device for simulating horizontal well deflagration fracturing, the structure is as described in embodiment 1, the difference is that two fixed steel cables (2-4) are respectively arranged at the two ends of the roller bearing (2-10), The two fixed steel cables (2-4) at the same end of the roller bearing are symmetrically arranged on both sides of the roller bearing (2-10), and one end of the two fixed steel cables (2-4) is connected to the roller bearing (2-10) The inner steel column and the other end are connected to the bottom base (2-2), and the two fixed steel cables (2-4) and the bottom base (2-2) form an isosceles triangle. The fixed steel cable can increase the support reliability of the roller bearing and ensure the stability when the pendulum rotates and impacts the movable plunger.

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Abstract

The invention relates to an experiment device for simulating horizontal well deflagration fracturing and an experiment method thereof. The experiment device comprises a rock sample clamping device, a pendulum bob impacting device, and a control analysis device. The rock sample clamping device comprises a cylinder. Rock cores with different characteristics can be placed in the cylinder. The cylinder is provided with a borehole internal pressure inlet opening, a confining pressure inlet opening, an air outlet, and a seepage channel outlet. The pendulum bob impacting device comprises a pendulum bob, an electric motor, and a roller. The electric motor drives the roller to rotate. The roller pushes the pendulum bob to knock a moving plunger on one side of the cylinder so as to load impact force onto the rock cores in the cylinder; confining pressure is loaded through the confining pressure inlet opening; and internal pressure is loaded through the internal pressure inlet opening. Through the provided experiment device, the destruction of deflagration impact in a horizontal well on rock cores with different characteristics and lengths can be researched; at the same time, the experiment operation can be precisely controlled, data can be effectively analyzed, and the experiment effect is good and prominent.

Description

technical field [0001] The invention relates to an experimental device and an experimental method for simulating deflagration and fracturing of a horizontal well, belonging to the technical field of oil and gas well development. Background technique [0002] With the development of my country's oil and gas exploration and development, my country's oil and gas development has gradually shifted its focus to low-permeability reservoirs. Low-permeability reservoirs are widely distributed in my country and have abundant reserves. However, most of the low-permeability reservoirs are difficult to produce due to various types of reservoirs and poor permeability. For such reservoirs, deflagration fracturing in horizontal wells has great advantages compared with other fracturing methods: short action time, helps to communicate artificial fractures with natural fractures near the wellbore, less operational restrictions, Less pollution and lower construction cost. In summary, horizont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/30
Inventor 吴飞鹏谭鑫宇杨旭达张骁阳李旭刘恒超蒲春生
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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