Method and apparatus for measuring permeability of porous rock
A permeability and rock technology, applied in the field of oil and gas field exploration and development, to achieve the effect of strong applicability
Active Publication Date: 2015-03-04
BC P INC CHINA NAT PETROLEUM CORP +1
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[0007] To sum up, the various measurement methods currently used for conventional testing of rock permeability have their own advantages, disadvantages and scope of application (rock samples with different levels of permeability)
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[0021] 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 making creative efforts belong to the protection scope of the present invention.
[0022] Such as figure 1 As shown, it is a flow chart of a method for measuring the permeability of porous rock in an embodiment of the present invention, and the method for measuring the permeability of porous rock includes:
[0023] 101. Obtain the compressibility coefficient of the rock sample to be tested under the semi-closed condition;
[0024] 102. Acquiring the compressibility coefficient of the rock sample to be tested under fully enclosed conditions;...
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Abstract
An embodiment of the invention provides a method and an apparatus for measuring permeability of a porous rock. The method comprises the steps of acquiring a compression coefficient of a to-be-measured rock sample in a semi-closed condition; acquiring a compression coefficient of the to-be-measured rock sample in a totally-enclosed condition; and acquiring a permeability parameter of the to-be-measured rock sample according to the compression coefficient of the to-be-measured rock sample in the semi-closed condition and the compression coefficient of the to-be-measured rock sample in the totally-enclosed condition. The technical solution disclosed by the invention has the following technical advantages that 1) actually, elastic properties and the permeability property of the rock are evaluated at the same time, so that the evaluation is more objective; 2) the method and the apparatus are more beneficial to reservoir prediction and fluid identification aimed at exploration and to oil and gas resource assessment and development aimed at oil-gas field development; and 3) relatively accurate estimation (10<-8>-10<-2> Darcy) can be achieved in a large range of the permeability values by using the apparatus and the method provided by the invention, and the apparatus and the method provided by the invention have stronger applicability for reservoir rock samples with medium or high permeability.
Description
technical field [0001] The invention relates to the technical field of exploration and development of oil and gas fields, in particular to a method and a device for measuring the permeability of pore rocks. Background technique [0002] Reservoir rock is a porous medium, and the porosity and permeability of rock are two reservoir characteristics that people care about. Porosity determines the storage performance of rocks, that is, the oil and gas reserves per unit volume of rocks. The permeability refers to the ability of the reservoir rock to allow fluid (oil, gas, water) to pass through under a certain pressure difference, and the permeability is expressed by the permeability. [0003] In the process of exploration and development of oil and gas fields, accurate measurement of permeability is the geological basis for oil and gas resource evaluation and development plan design. Therefore, the accurate calibration of rock permeability directly affects the production of oil ...
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IPC IPC(8): G01N15/08
Inventor 赵建国
Owner BC P INC CHINA NAT PETROLEUM CORP