Method and device for testing relative permeability curve

A technology of relative permeability and testing method, applied in measurement devices, permeability/surface area analysis, suspension and porous material analysis, etc., can solve the problem of low relative permeability water phase accuracy, and achieve the effect of improving relative permeability

Pending Publication Date: 2018-10-19
CHINA UNIV OF PETROLEUM (BEIJING)
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Problems solved by technology

[0005] The present invention provides a method and device for testing relative permeability curves, which are used to solve the problem that the relative permeability of the oil phase and the relative permeability of the water phase corresponding to different water saturations of artificial rock cores measured in the prior art are relatively low. technical problem

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  • Method and device for testing relative permeability curve
  • Method and device for testing relative permeability curve
  • Method and device for testing relative permeability curve

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[0053] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0054] At present, the oil-water relative permeability curve is mainly tested by the following methods. Specifically, an artificial rock core consistent with the physical properties of the rock formation in the reservoir is placed in the core holder, so that the artificial rock core is sealed by the core holder. Then, oil (for example, refined oil) and water are injected into the artificial core at a constant rate at a set ratio through the fluid inflow pipeline of...

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Abstract

The invention provides a method and device for testing a relative permeability curve. The method provided by the invention has the benefits that an isolation device is used for wrapping a to-be-measured rock core, so that the purpose of sealing can be achieved, so that when the oil-water relative permeability curve of the to-be-measured rock core is tested, a rock core clamping device is not required to be used for clamping the to-be-measured rock core, and the to-be-measured rock core can be directly placed on an electronic scale for oil and water injection and quality measurement. Therefore,the situation that as the to-be-measured rock core is taken out of the rock core clamping device and put back, the quality of the to-be-measured rock core measured by the electronic scale is not theactual quality of the to-be-measured rock core as well as the situation of fluid loss can be avoided, further the relative permeability of an oil phase corresponding to different water saturations ofthe to-be-measured rock core, the accuracy of the relative permeability of a water phase and the efficiency of testing the relative permeability of the oil phase corresponding to the different water saturations of the to-be-measured rock core and the accuracy of the relative permeability of the water phase are improved.

Description

technical field [0001] The invention relates to oil field detection technology, in particular to a relative permeability curve testing method and device. Background technique [0002] The oil-water relative permeability curve is a comprehensive response to the characteristics of oil-water two-phase seepage, and it is also the basic law that must be followed in the process of oil-water two-phase seepage. After the oilfield development enters the high water cut period, the distribution and occurrence of oil and water in the reservoir are quite different from those in the medium and low water cut period, and the remaining oil in the reservoir changes from continuous to discontinuous. This phenomenon will greatly change the morphological characteristics of the relative permeability curve, and then affect the oil-water flow law and liquid production law in the reservoir. Therefore, oil-water relative permeability curves are indispensable experimental data when compiling oilfield...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08
CPCG01N15/0806G01N15/0826
Inventor 管错李宜强李斌会陈诚齐桓
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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