Experimental apparatus and method for measuring rock permeation rate

A low-permeability, experimental device technology, applied in measurement devices, permeability/surface area analysis, suspension and porous material analysis, etc., can solve the problems of manual calculation, low test accuracy, cumbersome operation, etc., to achieve dynamic display time , Improve the accuracy and sensitivity, and avoid the effect of errors

Inactive Publication Date: 2011-01-12
BEIJING UNION UNIVERSITY
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Problems solved by technology

After more than 100 years, although the permeability measurement technology has made great progress, there are common shortcomings such as low test accuracy, cumbersome operation, and manual calculation.
Especially with the increasing difficulty of oilfield exploration and development, there are more and more permeability tests for low-permeability rock samples. At present, there are few experimental devices in this area, and most of them tend to be simple and low in automation.

Method used

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  • Experimental apparatus and method for measuring rock permeation rate
  • Experimental apparatus and method for measuring rock permeation rate
  • Experimental apparatus and method for measuring rock permeation rate

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Embodiment Construction

[0019] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0020] figure 1 Shows the flow chart of the experimental device for measuring low rock permeability, including cylinder 1, constant temperature water bath 2, ring pressure 3, core holder 4, oil container 5, water container 6, six-way valve 7, high-pressure nitrogen Steel cylinder 8, photoelectric interrupter 9, optical fiber tube 10, single-chip microcomputer, display, a certain number of photoelectric interrupters are placed at a distance of 2cm, and the rock is evacuated by a vacuum pump under a certain negative pressure through the experimental equipment, saturated with standard salt water, Put the core into the core holder, first open the ring pressure, then open the nitrogen bottle, squeeze the experimental crude oil from the cont...

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Abstract

The invention discloses an experimental device for measuring rock permeability and a method thereof. The device comprises a tube (1), a thermostatic water bath (2), a ring crush (3), a core holder (4), an oil holder (5), a water container (6), a six-way valve, a high pressure nitrogen steel bottle (8), a photoelectric interrupter (9), an optical fiber tube (10), a single chip and a monitor. The photoelectric interrupter is arranged in a certain equidistant and is connected with the single chip which is connected with the monitor. In the measuring method, the flow speed of liquid is calculatedby time of the liquid passing the equidistant photoelectric interrupter, thus obtaining the permeability of the rock. The invention has the advantages of high precision, fast testing speed, and easy operation.

Description

technical field [0001] The invention relates to an experimental device and method for measuring the physical properties of oil layers of rocks in the exploration and development of oil and natural gas, in particular to an experimental device and method for measuring low permeability of rocks. Background technique [0002] According to the definition of permeability: when there is a pressure difference, the property that the rock allows liquid and gas to pass through is called the permeability of the rock, and the permeability is the quantitative representation of the permeability of the rock. It characterizes the ability of oil and gas to flow to the bottom of the well through the formation rock, and the unit is square meter (or square micron). This is the most basic macroscopic parameter of reservoir rock, which is necessary for the development of oil and gas fields. The rock permeability measurement technology and device have been experimentally studied by the French scie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N15/08
Inventor 高美娟田景文周世儒
Owner BEIJING UNION UNIVERSITY
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