CN202815092U - Electrical isolation unit for rock resistivity measurement - Google Patents
Electrical isolation unit for rock resistivity measurement Download PDFInfo
- Publication number
- CN202815092U CN202815092U CN 201220385016 CN201220385016U CN202815092U CN 202815092 U CN202815092 U CN 202815092U CN 201220385016 CN201220385016 CN 201220385016 CN 201220385016 U CN201220385016 U CN 201220385016U CN 202815092 U CN202815092 U CN 202815092U
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- Prior art keywords
- flange
- isolated location
- insulating
- insulating spacer
- main body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000011435 rock Substances 0.000 title claims abstract description 35
- 238000005259 measurement Methods 0.000 title claims abstract description 22
- 238000002955 isolation Methods 0.000 title abstract 11
- 125000006850 spacer group Chemical group 0.000 claims abstract description 48
- 238000007789 sealing Methods 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims abstract description 5
- 238000009413 insulation Methods 0.000 claims description 32
- 239000007788 liquid Substances 0.000 claims description 9
- 239000011810 insulating material Substances 0.000 claims description 6
- 238000001465 metallisation Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 abstract description 11
- 239000012212 insulator Substances 0.000 abstract 5
- 210000004907 gland Anatomy 0.000 abstract 1
- 238000006073 displacement reaction Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 9
- 239000012530 fluid Substances 0.000 description 8
- 208000002925 dental caries Diseases 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical class O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000011545 laboratory measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- VEMKTZHHVJILDY-UHFFFAOYSA-N resmethrin Chemical compound CC1(C)C(C=C(C)C)C1C(=O)OCC1=COC(CC=2C=CC=CC=2)=C1 VEMKTZHHVJILDY-UHFFFAOYSA-N 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- Measurement Of Resistance Or Impedance (AREA)
Abstract
The utility model discloses an electricity isolation unit for rock resistivity measurement, including electricity isolation unit main part, insulating isolator inside lining, insulating isolator, gland nut, sealing washer, insulating isolation cap and pipeline interface. The electric isolation unit main body is provided with a hollow cavity; the top of the insulating isolation cap is provided with a through hole; the insulating insulator liner is a metal conduit with a flange at the front end; the top and the periphery of the insulating isolation cap are hermetically connected with the cavity of the electric isolation unit main body; the insulating spacer liner flange is abutted against the inner side of the insulating spacer cap; the insulating insulator is sleeved on the periphery of the insulating insulator lining, and the flange of the insulating insulator is abutted against the rear end face of the flange of the insulating insulator lining; the sealing ring is arranged on the periphery of the flange of the inner liner of the insulating isolator in a surrounding manner and is connected with the insulating isolation cap and the insulating isolator; the pressing nut is sleeved on the periphery of the insulating isolator, one end of the pressing nut abuts against the rear end face of the flange of the insulating isolator and is in threaded connection with the main body of the electric isolation unit; the pipeline interface is connected with the external metal pipeline and the cavity of the main body of the electric isolation unit.
Description
Technical field
The utility model relates to the rock resistivity measurement field of petroleum exploration field, relates in particular to a kind of rock resistivity measurement instrument, is a kind of electric isolated location for rock resistivity measurement concretely.
Background technology
The Measurement and analysis of carrying out rock resistivity in the laboratory is to seek the important means of well logging new method, reasonable dismissal well-log information.Usually when the laboratory measurement rock resistivity, all adopt the electrode method to measure, comprise two-probe method and four electrode method.Specific practice is that the rock core of saturated brine is put into special-purpose core holding unit, then with experimental oil by the water in the displacement pump displacement rock core, its water saturation is reduced, in displacement process, measure the resistivity of rock.Be generally steel conduction pipeline owing to connect the pipeline at rock core two ends in measuring process, these pipelines are connected with systems such as displacement pump, pressure transducer, baking ovens, produce additional resistance, even may cause the short circuit of rock core upper and lower side, affect the accuracy of measurement of rock resistivity.
The utility model content
For the above-mentioned problems in the prior art, the utility model provides a kind of electric isolated location for rock resistivity measurement, it both can make core holding unit and the insulation of other test macro, oily displacing fluid by experiment again, thus make rock resistivity measurement not be subjected to the impact of other system.
For realizing the purpose of this utility model, the utility model provides a kind of electric isolated location for rock resistivity measurement, and this electricity isolated location comprises: electric isolated location main body 4, insulating spacer liner 1, insulating spacer 2, clamping nut 3, O-ring seal 5, insulation isolating cap 6 and pipeline interface 15;
This electricity isolated location main body 4 is respectively equipped with interior screw socket 401,402 for the column structure of logical cavity in axially having on its cavity two ends inwall;
This insulation isolating cap 6 is made by insulating material, and its top has through hole 601;
This insulating spacer liner 1 has the metal catheter of flange 101 for front end, and the inboard shape of the outer shape of its flange 101 and this insulation isolating cap 6 is coincide;
This insulating spacer 2 is made by insulating material, and it has the conduit of flange 201 for front end;
Described pipeline interface 15 is a nut, and it realizes engaging with described interior screw socket 402 by the spiral shell button;
This insulation isolating cap 6 places this electricity isolated location main body 4 cavity insides, and its top and periphery are connected with the inner wall sealing of these electricity isolated location main body 4 cavitys, and insulation isolating cap 6 top through holes 601 are communicated with the cavity of electric isolated location main body 4; This insulating spacer liner 1 places electric isolated location main body 4 cavity insides, and its flange 101 front end faces are resisted against the inboard of this insulation isolating cap 6, and is tightly connected with it; This insulating spacer 2 is sheathed on insulating spacer liner 1 periphery, and its flange 201 front end faces are resisted against flange 101 rear end faces of insulating spacer liner 1; O-ring seal 5 is located on flange 101 peripheries of insulating spacer liner 1, connects flange 201 front end faces of insulation isolating cap 6 lower edges and insulating spacer 2; This clamping nut 3 is sheathed on insulating spacer 2 peripheries, and the one end is resisted against flange 201 rear end faces of insulating spacer 2, and its periphery screw socket engages with the interior screw socket 401 of electric isolated location main body 4; Screw socket 402 engages with pipeline interface 15 in these electricity isolated location main body 4 other ends, and pipeline interface 15 connects external metallization pipeline and electric isolated location main body 4 cavitys.
In the utility model embodiment, preferably, insulating spacer liner 1 rear end connects core holding unit inlet or liquid outlet.
In the utility model embodiment, preferably, can will should be connected on the pipeline of core holding unit liquid feeding end and outlet end by the electricity isolated location.
The beneficial effects of the utility model are, the electric isolated location inside that is used for rock resistivity measurement of the utility model embodiment forms by experiment oily displacing fluid of fluid path by insulating spacer liner conduit, insulation isolating cap through hole and electric isolated location body cavity, the insulated enclosure system that is consisted of by insulating spacer liner, O-ring seal and insulation isolating cap simultaneously, make the liquid line and the external system insulation that connect core holding unit, and can bear displacement pressure, make rock resistivity measurement not be subjected to the impact of other system.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is embodiment more of the present utility model, for those skilled in the art, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the cross-sectional view of the electric isolated location that is used for rock resistivity measurement of the utility model embodiment;
Fig. 2 measures the apparatus structure synoptic diagram of rock resistivity for using electric isolated location embodiment illustrated in fig. 1.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
Fig. 1 is the cross-sectional view of electric isolated location of the rock resistivity measurement of the utility model embodiment.As shown in the figure, the electric isolated location of a kind of preferred implementation of the present utility model comprises: electric isolated location main body 4, insulating spacer liner 1, insulating spacer 2, clamping nut 3, O-ring seal 5, insulation isolating cap 6 and pipeline interface 15.
Electricity isolated location main body 4 is respectively equipped with interior spiral shell 401,402 for the column structure of logical cavity in axially having on its cavity two ends inwall.Insulation isolating cap 6 is made by insulating material, and its top has through hole 601.Insulating spacer liner 1 has the metal catheter of flange 101 for front end, and the outer shape of its flange 101 is coincide with the inboard shape of insulation isolating cap 6.Insulating spacer 2 is made by insulating material, and it has the conduit of flange 201 for front end.Pipeline interface 15 is a nut, and it engages with interior screw socket 402 by the spiral shell button; Clamping nut 3 has outer screw socket.
Thus, form by experiment oily displacing fluid of fluid path by insulating spacer liner 1 conduit, insulation isolating cap 6 through holes and electric isolated location main body 4 cavitys, the insulated enclosure system that is consisted of by insulating spacer liner 1, O-ring seal 5 and insulation isolating cap 6 simultaneously, make the liquid line and the external system insulation that connect core holding unit, and can bear displacement pressure.
In the present embodiment, measure the resistance of insulating spacer liner 1 rear end and 15 of pipeline interfaces with resistivity meter, resistance is infinity as a result, has good insulation effect.
Again as shown in Figure 2, when using electric isolated location measurement rock resistivity shown in Figure 1, with two as shown in Figure 1 the electric isolated location 7 of embodiment be connected on the pipeline of the liquid feeding end of core holding unit 11 and outlet end, each insulating spacer liner 1 rear end connects respectively upper end 10 and the lower end 14 of core holding unit, pipeline interface 15 connects the external metallization pipeline, thereby is connected with Other Instruments such as displacement pump, pressure transducer, baking ovens.The rock core 9 that will contain saturated brine is put into core holding unit 11, add confined pressure by confined pressure pressurization entrance 8, then with experimental oil by the displacement pump, water in the upper end 10 displacement rock cores of core holding unit, its water saturation is reduced, in displacement process, measure the resistivity at rock two ends by resistivity meter 16.
In the present embodiment, round rubber cover 12 is used for the sealing rock core, acts on the round rubber cover by confined pressure liquid, avoids the displacement fluid from crossfire between rock core and the round rubber cover; Semi-permeable plate 13 so that in displacement process only by water, make rock core can fully reach the capillary pressure balance, saturation distribution is even.
Can find out by embodiment illustrated in fig. 2, in the process of the resistivity of the rock core of measuring clamper inside, to install other system additional at the two ends of clamper, as: the displacement pumping system, differential pressure measurement system, heating system, metering system etc., if do not install the electric isolated location of the utility model embodiment additional, the rock of measurement and these system connectivity conduction will affect measurement result.
The electric isolated location inside of the utility model embodiment forms by experiment oily displacing fluid of fluid path by insulating spacer liner conduit, insulation isolating cap through hole and electric isolated location body cavity, the insulated enclosure system that is consisted of by insulating spacer liner, O-ring seal and insulation isolating cap simultaneously, make the liquid line and the external system insulation that connect core holding unit, and can bear displacement pressure, make rock resistivity measurement not be subjected to the impact of other system.
Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiment of the utility model; and be not used in and limit protection domain of the present utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (3)
1. electric isolated location that is used for rock resistivity measurement, it is characterized in that, described electric isolated location comprises: electric isolated location main body (4), insulating spacer liner (1), insulating spacer (2), clamping nut (3), O-ring seal (5), insulation isolating cap (6) and pipeline interface (15);
Described electric isolated location main body (4) is respectively equipped with interior screw socket (401), (402) for the column structure of logical cavity in axially having on its cavity two ends inwall;
Described insulation isolating cap (6) is made by insulating material, and its top has through hole (601);
Described insulating spacer liner (1) has the metal catheter of flange (101) for front end, and the inboard shape of the outer shape of described flange (101) and described insulation isolating cap (6) is coincide;
Described insulating spacer (2) is made by insulating material, and it has the conduit of flange (201) for front end;
Described pipeline interface (15) is a nut, and it engages with described interior screw socket (402) by the spiral shell button;
Described insulation isolating cap (6) places described electric isolated location main body (4) cavity inside, its top and periphery are connected with the inner wall sealing of described electric isolated location main body (4) cavity, and described insulation isolating cap (6) top through hole (601) is communicated with the cavity of described electric isolated location main body (4); Described insulating spacer liner (1) places described electric isolated location main body (4) cavity inside, and the front end face of its flange (101) is resisted against the inboard of described insulation isolating cap (6), and is tightly connected with it; Described insulating spacer (2) is sheathed on described insulating spacer liner (1) periphery, and its flange (201) front end face is resisted against flange (101) rear end face of insulating spacer liner (1); O-ring seal (5) is located on flange (101) periphery of insulating spacer liner (1), connects flange (201) front end face of insulation isolating cap (6) lower edge and insulating spacer (2); Described clamping nut (3) is sheathed on described insulating spacer (2) periphery, and the one end is resisted against flange (201) rear end face of described insulating spacer (2), and its periphery screw socket engages with the interior screw socket (401) of electric isolated location main body (4); Screw socket (402) engages with described pipeline interface (15) in described electric isolated location main body (4) other end, and described pipeline interface (15) connects external metallization pipeline and described electric isolated location main body (4) cavity.
2. the electric isolated location for rock resistivity measurement as claimed in claim 1 is characterized in that, described insulating spacer liner (1) rear end connects core holding unit inlet or liquid outlet.
3. the electric isolated location for rock resistivity measurement as claimed in claim 1 or 2 is characterized in that, described electric isolated location is connected on the pipeline of core holding unit liquid feeding end and outlet end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220385016 CN202815092U (en) | 2012-08-03 | 2012-08-03 | Electrical isolation unit for rock resistivity measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220385016 CN202815092U (en) | 2012-08-03 | 2012-08-03 | Electrical isolation unit for rock resistivity measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202815092U true CN202815092U (en) | 2013-03-20 |
Family
ID=47873950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220385016 Expired - Fee Related CN202815092U (en) | 2012-08-03 | 2012-08-03 | Electrical isolation unit for rock resistivity measurement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202815092U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102809695A (en) * | 2012-08-03 | 2012-12-05 | 中国石油天然气股份有限公司 | Electrical isolation unit for rock resistivity measurement |
| CN105092815A (en) * | 2014-05-09 | 2015-11-25 | 中国石油化工股份有限公司 | Rock acoustic and electrical parameter joint testing device capable of simulating reservoir conditions |
-
2012
- 2012-08-03 CN CN 201220385016 patent/CN202815092U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102809695A (en) * | 2012-08-03 | 2012-12-05 | 中国石油天然气股份有限公司 | Electrical isolation unit for rock resistivity measurement |
| CN102809695B (en) * | 2012-08-03 | 2014-11-05 | 中国石油天然气股份有限公司 | Electrical isolation unit for rock resistivity measurement |
| CN105092815A (en) * | 2014-05-09 | 2015-11-25 | 中国石油化工股份有限公司 | Rock acoustic and electrical parameter joint testing device capable of simulating reservoir conditions |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20210803 |