Conglomerate full-diameter rock core radial flow oil-water relative permeability measuring device and method

A full-diameter core and relative permeability technology is applied in the field of radial flow oil-water relative permeability measurement devices for conglomerate full-diameter cores, which can solve the problems of difficulty in obtaining representative cores, small core size, and poor representation of small cores. , to achieve the effect of realizing the processing of test data, easy installation and disassembly, and simple structure design
CN110907334AActive Publication Date: 2020-03-24CHINA UNIV OF PETROLEUM (EAST CHINA)
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA UNIV OF PETROLEUM (EAST CHINA)
Publication Date
2020-03-24

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Abstract

The invention discloses a conglomerate full-diameter rock core radial flow oil-water relative permeability measuring device and method. According to a conglomerate full-diameter rock core radial flowoil-water relative permeability measuring experimental device, an experimental process and an experimental data processing method, the radial seepage process of the oil and water near a wellbore underthe formation temperature and pressure can be accurately simulated, and the radial seepage oil and water relative permeability of the conglomerate full-diameter rock core is measured. The experimental device comprises a vacuumizing system, a pressure supply system, a simulated reservoir module and a produced liquid metering system. The experimental process comprises the following steps of full-diameter rock core pretreatment, rock core absolute permeability determination, rock core vacuumizing and water saturation, an oil displacement water method rock core saturated oil experiment and the water displacement oil unsteady state method oil-water relative permeability measurement experiment. The data processing method is a full-diameter rock core radial flow oil-water relative permeability curve calculation method derived on the basis of a Darcy formula, a B-L radial seepage equation, a flow function G and the like.
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Description

technical field

[0001] The invention belongs to the technical field of measuring the oil-water two-phase relative permeability of conglomerate reservoir cores, and includes a device and method for measuring the radial flow oil-water relative permeability of conglomerate full-diameter cores. Background technique

[0002] The oil-water two-phase relative permeability is one of the basic parameters for oil and gas field development. It has important guiding significance for formulating reservoir development plans and understanding the seepage of oil and water in reservoirs, and it is a parameter that must be measured. At present, the measurement of oil-water relative permeability of cores is mainly for sandstone cores, and the cores used for measurement are mostly core columns with a diameter of 2.5 cm, and the measured flow is mainly one-dimensional linear flow. The diameter of the core holder commonly used in domestic and foreign experiments is 2.5 cm. The advantage is that i...

Claims

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