CN103293192A - Displacement electrode - Google Patents

Displacement electrode Download PDF

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Publication number
CN103293192A
CN103293192A CN2013102125844A CN201310212584A CN103293192A CN 103293192 A CN103293192 A CN 103293192A CN 2013102125844 A CN2013102125844 A CN 2013102125844A CN 201310212584 A CN201310212584 A CN 201310212584A CN 103293192 A CN103293192 A CN 103293192A
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China
Prior art keywords
displacement
pressurization
pressure cap
joint pin
insulated column
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CN2013102125844A
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Chinese (zh)
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CN103293192B (en
Inventor
蔡敏龙
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CNPC Xibu Drilling Engineering Co Ltd
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CNPC Xibu Drilling Engineering Co Ltd
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Priority to CN201310212584.4A priority Critical patent/CN103293192B/en
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Publication of CN103293192B publication Critical patent/CN103293192B/en
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Abstract

The invention relates to the technical field of a core saturation specific resistance measuring electrode, and in particular relates to a displacement electrode. The displacement electrode comprises a displacement pressurizing connecting column, a displacement conductive pressure cap and a displacement insulation isolation column, wherein an annular installation concave platform is arranged on the upper outer wall of the displacement pressurizing connecting column, a displacement pressurizing connecting sleeve is installed on the installation concave platform, a displacement pressurizing fixed sleeve is fixedly installed on the installation concave platform above the displacement pressurizing connecting sleeve, the displacement insulation isolation column is fixedly installed at the lower end of the displacement pressurizing connecting column, the displacement conductive pressure cap is fixedly installed at the lower end of the displacement insulation isolation column, and the displacement pressurizing connecting column and the displacement insulation isolation column are internally provided with axial through holes to be communicated with each other. The displacement electrode is reasonable and compact in structure and convenient to use, can efficiently improve the core and electrode coupling efficiency and conductivity, and can improve the accuracy for measuring the core saturation specific resistance.

Description

The displacement electrode
Technical field
The present invention relates to rock core saturation degree resistivity measurement electrode technology field, is a kind of displacement electrode.
Background technology
For a long time, rock core saturation degree resistivity measurement electrode is to adopt displacement electrode and fluid electrode two utmost point methods to measure rock core saturation degree resistivity, and the displacement end adopts rock core and stainless steel potential electrode to be coupled, and coupling effect is poor, and it is big that rock core and electrode contact error.Though this kind mode can not impact rock core saturation degree measuring accuracy, along with the decline of rock core water containing saturability, the rock core contact resistance can be multiplied, and causes rock core saturation degree resistivity measurement error constantly to increase.
Summary of the invention
The invention provides a kind of displacement electrode, overcome the deficiency of above-mentioned prior art, it can effectively solve, and traditional displacement electrode is bad because rock core contacts with electrode to make that rock core coupling is bad and causes measuring the big problem of rock core saturation degree resistivity error.
Technical scheme of the present invention realizes by following measure: a kind of displacement electrode comprises displacement pressurization joint pin, displacement conduction pressure cap and displacement insulation insulated column; The installation concave station that annular is arranged on the displacement pressurization joint pin external wall of upper portion, at the installation concave station displacement pressurization adapter sleeve is installed, be installed with displacement pressurization fixed cover on the installation concave station of displacement pressurization adapter sleeve top, the lower end of displacement pressurization joint pin is installed with displacement insulation insulated column, the lower end of displacement insulation insulated column is installed with displacement conduction pressure cap, the axially extending bore that connection is arranged respectively in the inside of displacement pressurization joint pin and displacement insulation insulated column, displacement pressurization joint pin above displacement pressurization fixed cover has the slotted line joint inside and outside connecting, inside at axially extending bore is equipped with slotted line, the top and bottom of slotted line are fixedly installed togather with slotted line joint the inner and displacement conduction pressure cap respectively, displacement pressurization joint pin internal fixation above the slotted line joint is equipped with the round-meshed sealing adaptor in center, on the displacement conduction pressure cap of corresponding axially extending bore mounting hole is arranged, the displacement pipeline that is communicated with circular hole and mounting hole is installed in the inside of axially extending bore, there is the displacement connectivity slot that communicates with mounting hole displacement conduction pressure cap lower end, and displacement conduction pressure cap lower end is installed with the porous silver strip.
Be the further optimization and/or improvements to the foregoing invention technical scheme below:
There is last mounting groove the lower end of above-mentioned displacement pressurization joint pin, and there is following mounting groove the upper end of displacement conduction pressure cap, the top and bottom of displacement insulation insulated column be fixedly mounted on respectively mounting groove interior with following mounting groove in.
Above-mentionedly be radially distributed with at least two afterburning hole at displacement pressurization adapter sleeve outer wall upper edge circumference, displacement insulation insulated column is cruciform, is radially distributed with at least two afterburning hole at the outer wall upper edge circumference of displacement insulation insulated column.
Can be with insulation tube on the above-mentioned slotted line.
On the outer wall of above-mentioned displacement pressurization adapter sleeve screw thread can be arranged, can displacement pressurization fixed cover be installed by screw thread on the installation concave station of displacement pressurization joint pin, the top and bottom of displacement insulation insulated column be fixedly mounted in the mounting groove by screw thread respectively and following mounting groove in, displacement is conducted electricity the pressure cap lower end and is welded with the porous silver strip.
Reasonable and compact in structure of the present invention, easy to use, it can effectively improve rock core and electrode coupling efficiency and conductive capability, thereby has improved the accuracy of measuring rock core saturation degree resistivity.
Description of drawings
Accompanying drawing 1 is looked the sectional structure synoptic diagram for the master of most preferred embodiment of the present invention.
Coding in the accompanying drawing is respectively: 1 is displacement pressurization joint pin, and 2 for installing concave station, and 3 are displacement pressurization adapter sleeve, and 4 are displacement pressurization fixed cover, 5 is last mounting groove, and 6 is displacement conduction pressure cap, and 7 are following mounting groove, 8 are displacement insulation insulated column, and 9 is axially extending bore, and 10 is the slotted line joint, 11 is slotted line, and 12 is circular hole, and 13 is sealing adaptor, 14 is mounting hole, and 15 are the displacement pipeline, and 16 are the displacement connectivity slot, 17 is the porous silver strip, and 18 is afterburning hole, and 19 is insulation tube.
Embodiment
The present invention is not subjected to the restriction of following embodiment, can determine concrete embodiment according to technical scheme of the present invention and actual conditions.
In the present invention, for convenience of description, the description of the relative position relation of each parts all is that the Butut mode according to Figure of description 1 is described, as: the position relation of upper and lower, left and right etc. is what to determine according to the Butut direction of Figure of description.
Below in conjunction with embodiment and accompanying drawing the present invention is further described:
As shown in Figure 1, this displacement electrode comprises displacement pressurization joint pin 1, displacement conduction pressure cap 6 and displacement insulation insulated column 8; The installation concave station 2 that annular is arranged on displacement pressurization joint pin 1 external wall of upper portion, at installation concave station 2 displacement pressurization adapter sleeve 3 is installed, be installed with displacement pressurization fixed cover 4 on the installation concave station 2 of displacement pressurization adapter sleeve 3 tops, the lower end of displacement pressurization joint pin 1 is installed with displacement insulation insulated column 8, the lower end of displacement insulation insulated column 8 is installed with displacement conduction pressure cap 6, the axially extending bore 9 that connection is arranged respectively in the inside of displacement pressurization joint pin 1 and displacement insulation insulated column 8, displacement pressurization joint pin 1 above displacement pressurization fixed cover 4 has the slotted line joint 10 inside and outside connecting, in the inside of axially extending bore 9 slotted line 11 is installed, the top and bottom of slotted line 11 are fixedly installed togather with slotted line joint 10 the inners and displacement conduction pressure cap 6 respectively, displacement pressurization joint pin 1 internal fixation above slotted line joint 10 is equipped with the sealing adaptor 13 that there is circular hole 12 at the center, on the displacement conduction pressure cap 6 of corresponding axially extending bore 9 mounting hole 14 is arranged, the displacement pipeline 15 that is communicated with circular hole 12 and mounting hole 14 is installed in the inside of axially extending bore 9, there is the displacement connectivity slot 16 that communicates with mounting hole 14 displacement conduction pressure cap 6 lower ends, and displacement conduction pressure cap 6 lower ends are installed with porous silver strip 17.Displacement pressure is by circular hole 12, displacement pipeline 15, mounting hole 14, displacement connectivity slot 16 and porous silver strip 17 are applied in the hole duct of rock core end face, displacement goes out the liquid in the rock core hole, eliminated the bad measuring error of bringing of rock core and potential electrode coupling, displacement pressurization joint pin 1 guaranteed different rock core dimensional measurements and apply rock core and potential electrode between coupling pressure, displacement pressurization fixed cover 4 is used for the spacing of displacement pressurization adapter sleeve 3, displacement pressurization adapter sleeve 3 has guaranteed to apply the coupling pressure between rock core and the potential electrode, reduce the contact error that the rock core contact resistance brings, guaranteed the needs of rock core saturation degree resistivity measurement precision; Porous silver strip 17 has the characteristic that coupling is good, conductive capability is strong, be provided with the displacement conduction pressure cap 6 of displacement connectivity slot 16 at porous silver strip 17 ends, make that contact resistance is reduced to minimum between rock core and the potential electrode, this design had both guaranteed the accurate measurement of rock core liquid outlet quantity, had guaranteed the measuring accuracy of saturation degree rock core resistivity again.
Can according to actual needs above-mentioned displacement electrode be made further optimization and/or improvements:
As shown in Figure 1, there is last mounting groove 5 lower end of displacement pressurization joint pin 1, and there is following mounting groove 7 upper end of displacement conduction pressure cap 6, the top and bottom of displacement insulation insulated column 8 be fixedly mounted on respectively mounting groove 5 interior with following mounting groove 7 in.
As shown in Figure 1, be radially distributed with at least two afterburning hole 18 at displacement pressurization adapter sleeve 3 outer wall upper edge circumference, displacement insulation insulated column 8 is cruciform, is radially distributed with at least two afterburning hole 18 at the outer wall upper edge circumference of displacement insulation insulated column 8.Afterburning hole 18 makes things convenient for the application of force of each parts in the installation and removal process.
As shown in Figure 1, be with insulation tube 19 on the slotted line 11.Guaranteed the insulativity of slotted line 11 with the outside.
As shown in Figure 1, on the outer wall of displacement pressurization adapter sleeve 3 screw thread is arranged, by screw thread displacement pressurization fixed cover 4 is installed on the installation concave station 2 of displacement pressurization joint pin 1, the top and bottom of displacement insulation insulated column 8 are fixedly mounted in the mounting groove 5 by screw thread respectively and in the following mounting groove 7, displacement conduction pressure cap 6 lower ends are welded with porous silver strip 17.Porous silver strip 17 and the coupling of rock core end face be can improve by welding between porous silver strip 17 and the displacement conduction pressure cap 6, rock core and electrode coupling efficiency and conductive capability improved.
Above technical characterictic has constituted most preferred embodiment of the present invention, and it has stronger adaptability and best implementation result, can increase and decrease non-essential technical characterictic according to actual needs, satisfies the demand of different situations.

Claims (6)

1. a displacement electrode is characterized in that comprising displacement pressurization joint pin, displacement conduction pressure cap and displacement insulation insulated column; The installation concave station that annular is arranged on the displacement pressurization joint pin external wall of upper portion, at the installation concave station displacement pressurization adapter sleeve is installed, be installed with displacement pressurization fixed cover on the installation concave station of displacement pressurization adapter sleeve top, the lower end of displacement pressurization joint pin is installed with displacement insulation insulated column, the lower end of displacement insulation insulated column is installed with displacement conduction pressure cap, the axially extending bore that connection is arranged respectively in the inside of displacement pressurization joint pin and displacement insulation insulated column, displacement pressurization joint pin above displacement pressurization fixed cover has the slotted line joint inside and outside connecting, inside at axially extending bore is equipped with slotted line, the top and bottom of slotted line are fixedly installed togather with slotted line joint the inner and displacement conduction pressure cap respectively, displacement pressurization joint pin internal fixation above the slotted line joint is equipped with the round-meshed sealing adaptor in center, on the displacement conduction pressure cap of corresponding axially extending bore mounting hole is arranged, the displacement pipeline that is communicated with circular hole and mounting hole is installed in the inside of axially extending bore, there is the displacement connectivity slot that communicates with mounting hole displacement conduction pressure cap lower end, and displacement conduction pressure cap lower end is installed with the porous silver strip.
2. displacement electrode according to claim 1, there is last mounting groove the lower end that it is characterized in that displacement pressurization joint pin, there is following mounting groove the upper end of displacement conduction pressure cap, the top and bottom of displacement insulation insulated column be fixedly mounted on respectively mounting groove interior with following mounting groove in.
3. displacement electrode according to claim 2, it is characterized in that displacement pressurization adapter sleeve outer wall upper edge circumference is radially distributed with at least two afterburning hole, displacement insulation insulated column is cruciform, is radially distributed with at least two afterburning hole at the outer wall upper edge circumference of displacement insulation insulated column.
4. according to claim 1 or 2 or 3 described displacement electrodes, it is characterized in that being with on the slotted line insulation tube.
5. according to claim 1 or 2 or 3 described displacement electrodes, it is characterized in that on the outer wall of displacement pressurization adapter sleeve screw thread being arranged, by screw thread displacement pressurization fixed cover is installed on the installation concave station of displacement pressurization joint pin, the top and bottom of displacement insulation insulated column be fixedly mounted in the mounting groove by screw thread respectively and following mounting groove in, displacement is conducted electricity the pressure cap lower end and is welded with the porous silver strip.
6. displacement electrode according to claim 4, it is characterized in that on the outer wall of displacement pressurization adapter sleeve screw thread being arranged, by screw thread displacement pressurization fixed cover is installed on the installation concave station of displacement pressurization joint pin, the top and bottom of displacement insulation insulated column be fixedly mounted in the mounting groove by screw thread respectively and following mounting groove in, displacement is conducted electricity the pressure cap lower end and is welded with the porous silver strip.
CN201310212584.4A 2013-05-31 2013-05-31 Displacement electrode Expired - Fee Related CN103293192B (en)

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CN103293192B CN103293192B (en) 2016-01-13

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104237317A (en) * 2014-09-15 2014-12-24 中国石油天然气股份有限公司 Pressure-resistant sealing device of saturation test circuit

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5610524A (en) * 1994-09-09 1997-03-11 Institut Francais Du Petrole Device for petrophysical measurement and implementation method
CN2872359Y (en) * 2006-03-06 2007-02-21 赵江青 Array semi-penetrating dummy hollow-billet pressure-resistance combined inspector
CN202948063U (en) * 2012-11-12 2013-05-22 中国石油集团西部钻探工程有限公司 Sealing type core resistivity measuring clamp
CN202948028U (en) * 2012-11-12 2013-05-22 中国石油集团西部钻探工程有限公司 Core displacement electrical measuring holder special for oil water

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5610524A (en) * 1994-09-09 1997-03-11 Institut Francais Du Petrole Device for petrophysical measurement and implementation method
CN2872359Y (en) * 2006-03-06 2007-02-21 赵江青 Array semi-penetrating dummy hollow-billet pressure-resistance combined inspector
CN202948063U (en) * 2012-11-12 2013-05-22 中国石油集团西部钻探工程有限公司 Sealing type core resistivity measuring clamp
CN202948028U (en) * 2012-11-12 2013-05-22 中国石油集团西部钻探工程有限公司 Core displacement electrical measuring holder special for oil water

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104237317A (en) * 2014-09-15 2014-12-24 中国石油天然气股份有限公司 Pressure-resistant sealing device of saturation test circuit
CN104237317B (en) * 2014-09-15 2016-08-31 中国石油天然气股份有限公司 Pressure-resistant sealing device of saturation test circuit

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