Liquid-displacing electrode
A liquid flooding and electrode technology, which is applied in the field of core saturation resistivity measurement electrodes, can solve the problems of large core resistivity measurement errors, achieve reasonable structure, ensure measurement accuracy, and reduce contact errors
Inactive Publication Date: 2015-08-19
CNPC XIBU DRILLING ENG
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Problems solved by technology
[0003] The present invention provides a liquid-displacement and liquid-discharging electrode, which overcomes the deficiencies of the above-mentioned prior art, and can effectively solve the traditional measurement electrode for measuring the saturation resistivity of rock cores. The problem of large error in core resistivity measurement due to large error in contact resistance
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[0016] The present invention is not limited by the following examples, and specific implementation methods can be determined according to the technical solutions of the present invention and actual conditions.
[0017] In the present invention, for the convenience of description, the description of the relative positional relationship of each component is based on the description attached to the description. figure 1 For example, the positional relationship of top, bottom, left, right, etc. is determined according to the layout direction of the drawings in the specification.
[0018] Below in conjunction with embodiment and accompanying drawing, the present invention will be further described:
[0019] as attached figure 1 , 2 As shown, the liquid-displacing and liquid-discharging electrode includes a liquid-discharging conductive voltage cap 1, a liquid-discharging pressure connecting column 2 and a liquid-discharging insulating isolation column 5; The lower end...
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The invention relates to the technical field of core saturation and resistivity measuring electrodes, and discloses a fluid displacing and draining electrode which comprises a fluid draining conductive pressure cap, a fluid draining pressurization connecting column and a fluid draining insulating isolating column. The fluid draining insulating isolating column is fixedly mounted at the lower end of the fluid draining conductive pressure cap, the fluid draining pressurization connecting column is fixedly mounted at the lower end of the fluid draining insulating isolating column, a big-end-up tapered fluid draining hole is formed in the center of the fluid draining conductive pressure cap, and axial channels which are communicated with each other are arranged on the inside the fluid draining insulating isolating column and the inside of the fluid draining pressurization connecting column and correspond to the tapered fluid draining hole. The fluid displacing and draining electrode has the advantages that the fluid displacing and draining electrode is reasonable and compact in structure and convenient to use, and a porous silver sheet of the fluid displacing and draining electrode is good in coupling and high in conductivity and is in contact with the fluid draining conductive pressure cap, so that contact resistance between a core and the measuring electrode is minimized, the coupling pressure applied to space between the core and the measuring electrode is guaranteed, contact errors due to the contact resistance of the core are reduced, and the requirement on core saturation and resistivity measurement accuracy is assuredly met.
Description
technical field [0001] The invention relates to the technical field of electrodes for measuring rock core saturation resistivity, and relates to a liquid-displacement electrode. Background technique [0002] For a long time, the measuring electrode for measuring the saturation resistivity of the rock core has been measured by the two-pole method of the liquid outlet electrode. The liquid outlet is directly coupled with the core and the stainless steel measuring electrode. The coupling effect is poor, and the core is in contact with the electrode. The error is large. In this method, as the water saturation of the core decreases, the contact resistance of the core will increase exponentially, resulting in a continuous increase in the measurement error of the core saturation resistivity. Contents of the invention [0003] The invention provides a liquid-displacing and liquid-discharging electrode, which overcomes the deficiencies of the prior art above, and can effectively s...
Claims
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IPC IPC(8): G01R27/02
Inventor 蔡敏龙
Owner CNPC XIBU DRILLING ENG