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Testing device for simulating permeability rule of low-permeability horizontal well and testing method

An experimental device and technology for horizontal wells, which are applied in the fields of fluid production, earthwork drilling, wellbore/well components, etc., can solve problems such as the inability to effectively simulate the seepage of horizontal wells, and achieve simple structure, convenient operation and high experimental process efficiency. Effect

Inactive Publication Date: 2015-12-02
SHANDONG UNIV OF SCI & TECH
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

This one-way water flooding device can simulate the seepage law of vertical wells, but the water flooding of horizontal wells is multi-directional, which cannot effectively simulate the seepage of horizontal wells

Method used

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  • Testing device for simulating permeability rule of low-permeability horizontal well and testing method
  • Testing device for simulating permeability rule of low-permeability horizontal well and testing method
  • Testing device for simulating permeability rule of low-permeability horizontal well and testing method

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Embodiment Construction

[0047] For ease of understanding, the technical solutions of the present invention are further specifically described below in conjunction with the accompanying drawings and through embodiments:

[0048] like Figure 1-Figure 4 As shown, an experimental device for simulating the seepage law of a low-permeability horizontal well includes an advection pump 1, an intermediate container 1 2, an intermediate container 2 3, a computer 5, a core holder 10, a thermostatic box 13 and a pressurizing device 14.

[0049] Rock core holder 10 is cylindrical, and circular rock core holder 10 is provided with rock core 9, and rock core 9 adopts cuboid shape, and size is 36cm * 13cm * 4.5cm, and rock core is diagonally opened along the long side. A horizontal circular hole with a length of 10 cm simulates a horizontal injection well and a horizontal production well, respectively. The inlet of the horizontal injection well is provided with an injection port 20, and the outlet of the horizontal...

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Abstract

The invention discloses a testing device for simulating the permeability rule of a low-permeability horizontal well and a testing method. The testing device comprises a constant-flux pump, intermediate containers, a cylindrical rock core clamper and a pressurizing device. A cuboid rock core is arranged in the cylindrical rock core clamper. A horizontal circular hole is formed in the opposite angles of the rock core along the long edge, and a horizontal injection well and a horizontal production well are simulated. An injection end is arranged in an inlet of the horizontal injection well. A production end is arranged in an outlet of the horizontal production well. The constant-flux pump is connected with the input ends of the intermediate containers. The output ends of the intermediate containers are connected with the injection end. The testing method utilizing the testing device for simulating the permeability rule of the low-permeability horizontal well comprises the following steps that 1, a rock core is prepared; 2, water saturation is carried out on the artificial rock core; 3, a pipeline and a device are connected, simulation formation water is injected into the first intermediate container, simulation oil is injected into the second intermediate container, and the rock core achieving water saturation is placed in the rock core clamper; 4, oil saturation is carried out; 5, water drive operation is carried out. The testing device is simple in structure, convenient to use and high in testing efficiency.

Description

technical field [0001] The invention belongs to the technical field of simulating the seepage law of a horizontal well, and in particular relates to an experimental device and an experimental method for simulating the seepage law of a low-permeability horizontal well. Background technique [0002] Indoor water flooding experiment is a physical model to determine the development mode, and oil displacement efficiency is one of the important indicators of water flooding experiment. The traditional indoor water flooding physical simulation experiment device usually adopts cylindrical planar water injection, and the device usually consists of a water injection device, a rock core and a water and oil collection device. This unidirectional water flooding device can simulate the law of seepage in vertical wells, while water flooding in horizontal wells is multi-directional and cannot effectively simulate seepage in horizontal wells. [0003] Therefore, the development of an experim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/10E21B43/20
Inventor 王金凯卢浩谢俊
Owner SHANDONG UNIV OF SCI & TECH
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