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High temperature and high pressure core induced polarization potential measurement holder

A technology of induced polarization, high temperature and high pressure, applied in the direction of electrochemical variables of materials, etc., can solve problems such as rock influence, and achieve the effects of good sealing, stable and accurate results, and easy operation and use.

Active Publication Date: 2012-12-12
CHINA PETROLEUM & CHEM CORP +2
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the experimental research on the influence of temperature and pressure on rock induced polarization potential, and propose a high temperature and high pressure rock core induced polarization potential measurement clamp to realize the experimental measurement of the influence of rock induced polarization potential under different temperature and pressure conditions device

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  • High temperature and high pressure core induced polarization potential measurement holder

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Embodiment Construction

[0010] Refer to attached figure 1 , the core chamber 3 is an oil bath circulation cavity 6 with a cylindrical structure, and the electrochemical chamber 1 is a metal shell 5 including a high-strength non-metallic material to form a cavity structure (the electrochemical chamber 1 here can also directly use high-strength non-metallic materials Processing, such as high-strength glass fiber), the two ends of the core chamber 3 are connected with the electrochemical chamber 1 to form through holes in the same axial direction. The through hole of the electrochemical chamber 1 is sealed with an annular plunger 4 that runs through the interior and exterior of the chamber, and the opposite ends of the two annular plungers 4 are plugged and fitted with the inner cavity of the rock core chamber.

[0011] The opposite ends of the annular plunger are provided with screw rods and handles. Of course, the annular plunger here can also adopt other propulsion methods, such as hydraulic (pneuma...

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Abstract

The invention relates to a high temperature and high pressure core induced polarization potential measurement holder, comprising two electrochemical chambers, a core chamber and a metal shell. The electrochemical chambers are used for containing solution, and are respectively provided with a measuring electrode and a power supply electrode; the core is placed in the core chamber, which applies pressure on the core; an oil bath is employed to conduct circulating heating on the core; and the metal shell reinforces bearing capacity of the holder. The invention realizes induced polarization potential measurement on the core at a temperature of 90 DEG, confining pressure of 70 MPa and pore pressure of 45MPa.

Description

technical field [0001] The invention belongs to the field of electrochemical potential experiment measuring instruments and relates to a clamper for measuring rock core excitation polarization potential under temperature and pressure conditions. Background technique [0002] The induced polarization potential is an electrochemical phenomenon caused by the excitation of the formation rock by an external electric field current, and is closely related to the formation rock properties, pore-permeability parameters, pore structure, formation water resistivity, and cation exchange capacity. Under reasonable measurement technical conditions, the induced polarization logging data combined with other logging data can effectively provide important parameters such as formation water resistivity, formation cation exchange capacity, and rock pore structure. The water-flooded layer provides a strong basis. Therefore, carrying out experimental research on induced polarization potential la...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/28
Inventor 朱留方范宜仁张晋言刘兵开吴健邓少贵
Owner CHINA PETROLEUM & CHEM CORP