CN203239335U - Electrical resistivity simulation unit body used for detecting characteristic indexes of underground measuring instrument - Google Patents
Electrical resistivity simulation unit body used for detecting characteristic indexes of underground measuring instrument Download PDFInfo
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- CN203239335U CN203239335U CN 201320089222 CN201320089222U CN203239335U CN 203239335 U CN203239335 U CN 203239335U CN 201320089222 CN201320089222 CN 201320089222 CN 201320089222 U CN201320089222 U CN 201320089222U CN 203239335 U CN203239335 U CN 203239335U
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Abstract
The utility model discloses an electrical resistivity simulation unit body used for detecting characteristic indexes of an underground measuring instrument, and particularly provides an electrical resistivity simulation unit body simulating the electrical resistivity of an underground object stratum. The electrical resistivity simulation unit body used for detecting the characteristic indexes of the underground measuring instrument is an annular unit body provided with a central annular hole, and at least one local calibration characteristic is arranged on the surface of the central annular hole to be used for detecting one or more kinds of characteristic indexes of the underground measuring instrument.
Description
Technical field
The utility model relates to geophysical probing technique, relates to particularly the resistivity logging technology.
Background technology
In the geological drilling process, can adopt different geophysical probing techniques to the stratum of down-hole different depth, different lithology.In various geophysical probing techniques, the resistivity on measurement target stratum is one of important means of difference different lithology, discovery subterranean oil, gas, water resource.
Along with the continuous progress of logging technique level, the batch message amount is large, the device for subsurface measuring that radius of investigation is little, and such as down-hole acoustic-electric Image-forming instrument, down-hole microresistivity scanner etc. researched and developed successfully in succession.These device for subsurface measuring resolution ratio are high, and the down-hole information amount that provides is large, provides important foundation for verifying the down-hole Complicated Geologic Condition.
But, in the prior art, to the device for subsurface measuring of developing demarcate, verification is during with the reliability that detects these instruments, uniformity, perhaps for this instrument underground survey data establishment respective explanations software provide parameter according to the time, all must carry out to the well scene of reality.This work is costly, time and effort consuming not only, and demarcation, verification and the parameter that provides may be also not ideal enough on the degree of accuracy and uniformity according to this, in addition may can not find can with suitable well implement this work.
That is to say, how to the device for subsurface measuring of developing demarcate, verification, be badly in need of a great problem that solves for the establishment of instrument underground survey data interpretation software provides parameter in this area according to having become.
The utility model content
A purpose of the present utility model is to set up on ground the various different resistivity in a cover simulation down-hole, the device of Different Strata thickness, with easily to the downhole instrument of being developed demarcate, verification, the establishment for this instrument underground survey data interpretation software provides accurately and reliably parameter foundation easily.
Another purpose of the present utility model is unit and the manufacture method thereof that different target stratum corresponding resistor rate under a kind of accurately simulation well will be provided, and it can combine the different resistivity of whole down-hole formation of any degree of depth of simulation.
Another purpose of the present utility model be want so that under the simulation well unit of different target stratum corresponding resistor rate in use resistivity keep relative stability, the impact of extraneous humidity is reduced to minimum.
Another purpose of the present utility model be want so that under the simulation well block construction of different target stratum corresponding resistor rate simple, and be convenient to form corresponding section and relative positioning easily.
Another purpose of the present utility model be want so that under the simulation well unit of different target stratum corresponding resistor rate can be used for detecting one or more characteristic index of described device for subsurface measuring.
For realizing above-mentioned at least one purpose, the utility model provides the resistivity simulation cell cube of formation at target locations resistivity under a kind of simulation well, it is the annular element body with central annular distance, and has at least one local feature of demarcating on the surface of described central annular distance.
Preferably, the described local feature of demarcating comprises a plurality of grooves and/or the hole with different geometrical size and/or orientation.
Preferably, described resistivity simulation cell cube has the one or more locating holes that axially run through itself.
Preferably, the quantity of described locating hole is three, and along same circumference uniform distribution on the end face of described resistivity simulation cell cube.
Preferably, cover or be filled with insulating oil in the hole of all surface of described resistivity simulation cell cube and inside.
Preferably, described resistivity simulation cell cube is made by cement, one or more conductive materials and water.
Preferably, described conductive materials is particle and/or powder type.
Preferably, described conductive materials is graphite powder.
The ground calibration equipment of simulation well sub-surface resistivity of the present utility model can be set up the various different resistivity in a cover simulation down-hole, the device of Different Strata thickness on the ground.Utilize this device, can be easily to the downhole instrument of developing demarcate, verification, the establishment for instrument underground survey data interpretation software provides accurately and reliably parameter foundation easily.
Resistivity simulation cell cube of the present utility model is different target stratum corresponding resistor rate under the simulation well exactly, and these resistivity simulation cell cubes can be combined the different resistivity of the whole down-hole formation of any degree of depth of simulation.And, can stable for extended periods of time in this resistivity simulation cell cube use procedure.
In addition, resistivity simulation cell cube of the present utility model is simple in structure, is convenient to form corresponding section, relative positioning easily, but also can be used for detecting one or more characteristic index of described device for subsurface measuring.
By reference to the accompanying drawings to the utility model detailed description of preferred embodiment, those skilled in the art will understand above-mentioned and other purposes, advantage and feature of the present utility model more according to hereinafter.
Description of drawings
Hereinafter will be with reference to accompanying drawing and with exemplary and non-limiting way is described in detail preferred embodiment of the present utility model, identical Reference numeral has indicated identical or similar parts or part in the accompanying drawing.It will be understood by those skilled in the art that these accompanying drawings may not draw by actual ratio.In the accompanying drawing:
Fig. 1 shows the side schematic sectional view according to the ground calibration equipment of the simulation well sub-surface resistivity of a preferred embodiment of the utility model;
Fig. 2 is that the down-hole formation of ground shown in Figure 1 calibration equipment is simulated the schematic end of resistivity simulation section in the main body;
Fig. 3 is the side schematic sectional view of the part of resistivity simulation section shown in Figure 2;
Fig. 4 is the schematic end that the down-hole formation of ground shown in Figure 1 calibration equipment is simulated borehole wall imaging detector segments in the main body;
Fig. 5 is the schematic A-A sectional view of a borehole wall imaging detector segments part shown in Figure 4;
Fig. 6 is the schematic B-B sectional view of a borehole wall imaging detector segments part shown in Figure 4;
Fig. 7 is the schematic end according to the annular element body of a preferred embodiment of the utility model;
Fig. 8 is the side schematic sectional view of annular element body shown in Figure 7.
The specific embodiment
Referring to Fig. 1, comprise that according to the ground calibration equipment of the simulation well sub-surface resistivity of a preferred embodiment of the utility model the outer shaft wall 10(of circumferential sealing for example can be closed steel pressure-bearing bucket) and be arranged on the down-hole formation simulation main body 20 of outer shaft wall 10 radially inner sides.Preferably, between outer shaft wall 10 and down-hole formation simulation main body 20, be provided with centralizer 15, with down-hole formation is simulated main body 20 and outer shaft wall 10 suitably (normally with central axial line ground) be fixed together, thereby avoid in the processes such as use, lifting at the ground calibration equipment integral body of down-hole formation simulation the main body 20 or part is subjected to displacement and/or deformation.As well known to those skilled in the art, along the axial direction of outer shaft wall 10 a plurality of centralizers 15 can be set preferably.Each centralizer 15 itself for example can be an integrated support structure, perhaps also can be comprised of a plurality of separating members, and its concrete structure is well known to those skilled in the art, and it will not go into details to this for this paper.
In addition, as skilled in the art will understand, for example after the verification place installs ground of the present utility model calibration equipment, before use, need to be in outer shaft wall 10 liquid of (comprising in the space between the possible instrument space of down-hole formation simulation main body 20 and down-hole formation simulation main body 20 and the outer shaft wall 10) injection simulation well sub-surface liquid environment.These liquid for example can be Chinese national standard 35# diesel oil, perhaps can be other hydrocarbon liquids with electrical insulation characteristics, even can be the oil-base mud drilling fluids according to the actual demand proportioning, and also other substrate drilling fluids comprise the water-base mud drilling fluid.Describe for convenient, among the application these liquid are called " liquid in the well ".
Generally speaking, outer shaft wall 10 along its axial direction have first end 11 with axial relative the second end 12 of described first end.Obviously, in order to inject into well liquid and pass in and out for device for subsurface measuring in down-hole formation simulation main body 20, wherein said first end is openend.
Preferably, be provided with a circumferentially liquid reserve tank 40 of sealing on the first end 11 of outer shaft wall 10, described liquid reserve tank has the first end face and second end face relative with described the first end face axial along its axial direction.The first end face of liquid reserve tank 40 and the second end face have respectively the first central opening and the second central opening, described the first central opening is used for injecting into well in outer shaft wall liquid and for the device for subsurface measuring turnover, described the second central opening is then circumferentially sealed on the external surface of the first end 11 that is fixed, such as by welding, to outer shaft wall 10 along its edge.Very advantageously, such liquid reserve tank 40 defines an interim liquid storage space within it, to be housed in the liquid that may overflow outer shaft wall 10 when calibration equipment of the present utility model uses, the liquid of avoiding overflowing flows in the surrounding environment, and also can allow subsequently these liquid again to flow back in the outer shaft wall 10.For example, when suspending device for subsurface measuring to be tested in the outer shaft wall 10 (particularly, normally insert in the possible instrument space of down-hole formation simulation main body 20), liquid partly overflows in the well that has injected before may making wherein, this part liquid that overflows can temporarily be housed in the liquid reserve tank 40, and can not flow into environment space; And after having withdrawn from device for subsurface measuring to be tested, this part liquid that temporarily is housed in the liquid reserve tank 40 can flow back in the outer shaft wall 10 again again.
For convenient outside hanging device (for example crane) lifts operation to ground of the present utility model calibration equipment, preferably can be the first end 11 of outer shaft wall 10 near or the first end face of liquid reserve tank 40 be close to the circumferential edge place lifting components 45 be set.In one embodiment, lifting components 45 can be a plurality of hoisting rings that are fixed to symmetrically the contiguous circumferential edge of liquid reserve tank 40 first end faces place.For example, assemble the ground calibration equipment after, available crane is hung on the hoisting ring, with the ground calibration equipment put into the underground well that a temperature environment preferably keeps relative stability (normally the first end 11 of outer shaft wall 10 up, and the second end 12 down).
As skilled in the art will understand, here so-called " underground well " is not the subterranean bore hole of carrying out actual geological prospecting or resource exploitation, but one " container " being used for being installed in the utility model calibration equipment that excavate and/or build in the verification place.Preferably should " container " be built in underground, but be the consideration for aspects such as economy or environment, and nonessential.Therefore, although in some practical application, during calibration equipment of the present utility model may be placed in so-called " underground well ", but to those skilled in the art, owing to no longer need in the subterranean bore hole of actual geological prospecting or resource exploitation, to carry out the demarcation/verification of instrument, thereby calibration equipment of the present utility model still is considered to a kind of " ground calibration equipment ".
In preferred embodiment shown in Figure 1, the second end 12 of outer shaft wall 10 also is an openend, be provided with a terminating set 50 with draining valve 51 on it, to seal the opening of the second end 12, and the interior liquid of well that allows to inject in the outer shaft wall can be discharged under the control of draining valve 51, with liquid in the well that more renews according to the requirement of testing verification.Certainly, those skilled in the art all can understand, alternatively, the second end 12 of outer shaft wall 10 also can permanently seal, need this moment to adopt other measures to discharge the interior liquid of outer shaft wall, liquid for example can insert extra pipe and carry out the pump suction, perhaps verification dress in whole ground can be tilted or turn, so that can flow out from the first end 11 of outer shaft wall 10 openings.
Generally, down-hole formation simulation main body 20 comprises resistivity simulation section 21 and optional borehole wall imaging detector segments 22 and extension of section 23.
Referring to Fig. 2-3, resistivity simulation section 21 preferably is comprised of one or more resistivity simulation cell cubes 30, and thickness can be determined as required.Described resistivity simulation cell cube has been simulated the resistivity on different target stratum, down-hole, for the device for subsurface measuring (not shown) it is measured.Because resistivity simulation section 21 can be as required is comprised of the cell cube of different-thickness, different resistivity, therefore the longitudinal frame that can simulate device for subsurface measuring can be from the different resistivity such as multiple different-thickness stratum such as 10mm-1000mm, for the demarcation of device for subsurface measuring, the establishment of respective explanations software provide the true foundation of science, and can regularly carry out reliability and consistency desired result to corresponding device for subsurface measuring.
Referring to Fig. 4-6, optional borehole wall imaging detector segments 22 is comprised of one or more borehole wall imaging detecting unit bodies 35, and thickness can be determined as required.The described borehole wall imaging detecting unit n-body simulation n resistivity on different target stratum, down-hole, for the device for subsurface measuring (not shown) it is measured, and have at least one local feature of demarcating at the inner surface of outward pit shaft 10 central axial lines of at least a portion or each borehole wall imaging detecting unit body 35, with one or more characteristic index for detection of device for subsurface measuring.The local feature of demarcating comprises a plurality of groove 37' and/or the hole 37'' with different geometrical size and/or orientation.More specifically, can form at inner hole wall the hole of different-diameter, different depth, different size be parallel to groove that horizontal direction extends, the groove that extends perpendicular to horizontal direction and/or the inclined groove that extends with other angles of inclination with respect to horizontal direction, in order to characteristic index such as the imaging resolution that detects corresponding device for subsurface measuring and/or investigation depth.So far, be understandable that borehole wall imaging detecting unit body 35 is in fact a kind of special resistivity simulation cell cube with local demarcation feature.
As shown in Figure 1, resistivity simulation section 21 can be configured in axial direction be adjacent to the first end 11 of outer shaft wall 10, and borehole wall imaging detector segments 22 can be configured in axial direction be adjacent to resistivity simulation section 21.Perhaps alternatively, borehole wall imaging detector segments 22 can be configured in axial direction be adjacent to the first end 11 of outer shaft wall 10, and resistivity simulation section 21 can be configured in axial direction be adjacent to borehole wall imaging detector segments 22.
In addition, optional extension of section 23 also can be comprised of one or more extension of section cell cubes 39, and is configured in axial direction be adjacent to the second end 12 of outer shaft wall 10.As skilled in the art will understand, owing to device for subsurface measuring does not detect extension of section 23, so can not do special restriction to the resistivity of this section cell cube.
Preferably, be limited with respectively the instrument space 32,36,38 that can receive device for subsurface measuring in resistivity simulation section 21, borehole wall imaging detector segments 22 and the extension of section 23, be illustrated as in the embodiment in figure 1 circular central bore.As previously mentioned, extension of section 23 is not measured by device for subsurface measuring, thereby the operation that for example is used to device for subsurface measuring of instrument space 38 wherein provides the spatial accommodation of one section extension.
More preferably, these instrument spaces 32,36,38 all have identical central axial line, and have identical shaped cross section, and these instrument spaces 32,36,38 have namely consisted of the complete instrument space 25 of down-hole formation simulation main body 20 thus.
Certainly, those skilled in the art also should understand, if be not limited with the instrument space in resistivity simulation section 21, borehole wall imaging detector segments 22 and/or the extension of section 23 itself, measure in the space of restriction between the device for subsurface measuring inner surface that will be lowered to these sections and the outer shaft wall 10 so.Therefore, can say, receive device for subsurface measuring in the calibration equipment of the utility model ground so that measuring the instrument space of operation can simulate main body 20 itself by down-hole formation and further limit in that outer shaft wall 10 is interior, perhaps also can simulate main body 20 and outer shaft wall 10 limits jointly by down-hole formation.
In certain embodiments, resistivity simulation cell cube 30, borehole wall imaging detecting unit body 35 and extension of section cell cube 39 can be made into any suitable shape, for example essentially rectangular or roughly be the brick body of eccentric circular ring section.These brick bodies are preferred along circumferentially end to end or have certain intervals ground, in the axial direction stacked be assembled into each section in outer shaft wall, and limit therein corresponding instrument space.
More preferably, resistivity simulation cell cube 30 and/or borehole wall imaging detecting unit body 35 and/or extension of section cell cube 39 can be the annular element body with central annular distance, and the instrument space of each section is made of vertically the central annular distance of these annular element bodies at this moment.Here need to prove, term " annular " used among the application includes but not limited to annular, other have sealing or the annular of non-sealing periphery and sealing or non-sealing hollow endoporus, and being roughly oval sealing or non-closed ring or profile such as profile, to be roughly the sealing of rectangle or non-closed ring etc. also be possible; And and do not require that the central annular distance of these annulars and their peripheral profile are of similar shape.Itself can make the annular element body integratedly, also can be combined by less cell cube.
In a preferred embodiment, resistivity simulation cell cube 30, borehole wall imaging detecting unit body 35 and extension of section cell cube 39 all can be made into central annular distance shown in Fig. 7-8 and peripheral profile and be the form of circular annular element body 60 in shape.At this moment, resistivity simulation cell cube 30, borehole wall imaging detecting unit body 35 all can have identical external diameter and interior diameter with extension of section cell cube 39, and the thickness of unit body can arrange as required, can be the same or different each other.In a concrete example, described interior diameter for example can be 200 mm, and external diameter for example can be 800 mm(largest outer diameter can reach 1.5m or larger); Unit body preferably successively (for example from bottom to top) closed assembly becomes extension of section 23, borehole wall imaging detector segments 22 and resistivity simulation section 21, thereby consists of whole down-hole formation simulation main body 20; The whole length of this down-hole formation simulation main body 20 for example can be about 7.5 m.Annular element body 60 preferably also has the one or more locating holes 64 that axially run through itself.Need to prove that for clarity sake, locating hole 64 only indicates, and is not illustrated in other accompanying drawings in Fig. 7-8.During assembling, by in the corresponding locating hole 64 of adjacent annular cell cube 60, inserting alignment pin, they are relative to each other appropriately located.In one embodiment, the quantity of locating hole 64 is preferably three, and along same circumference uniform distribution on the end face of annular element body 60.Further, during closed assembly annular element body 60, can apply adhesive at the opposing end surface of adjacent two annular element bodies 60 and two annular element bodies 60 are adhesively fixed together.In the utility model, described adhesive is preferably silicate of soda, is commonly called as " water glass ".
Especially, in down-hole formation simulation main body 20 each section, especially in resistivity simulation section 21 and the borehole wall imaging detector segments 22, the unit body preferably all can be for being made by cement, one or more conductive materials and water, to simulate the specific electric resistance of certain formation at target locations.Described conductive materials is preferably particle and/or powder type, for example can be the particulate of graphite powder, CNT particle, some conducting metal or powder, etc.
In a particularly preferred embodiment, the utility model adopts graphite powder as conductive materials.Wherein, the ratio of cement and graphite powder is preferably selected according to the size for the treatment of the simulated target formation resistivity in the scope of 60:40 to 83.5:16.5.For example, when the ratio of cement and graphite powder was 60:40, the resistivity of the resistivity simulation cell cube of making was roughly 0.2 Ω M; And when the ratio of cement and graphite powder was 83.5:16.5, the resistivity of the resistivity simulation cell cube of making was roughly 2000 Ω M.As skilled in the art will understand, when making the cell cube of artifical resistance rate, graphite powder uses as conductive materials therein, if therefore reduce the shared ratio of graphite powder, the resistivity of so resulting cell cube is with corresponding increase; On the contrary, if improve the shared ratio of graphite powder, the resistivity of so resulting cell cube reduces corresponding.Accordingly, when implementing the utility model, it also is possible that the ratio of cement and graphite powder exceeds preferable range given above according to actual needs, also permits in the scopes such as 50:50 to 90:10 such as this ratio and selects.
Be noted that also that at this utility model preferably and unlike making conventional concrete component also will use sandstone as aggregate in manufacturing resistivity simulation cell cube when (comprising borehole wall imaging detecting unit body).This is because if used sandstone, will greatly increase so irregular and/or more macroporous quantity in the cell cube, the resistivity that causes very difficult more accurately acquisition to be expected; And this have a large amount of physical characteristics (for example resistivity) irregular and/or more macroporous cell cube and in use also be difficult to keep stable.But, disclose such as this section, in an alternate embodiment, also can adopt sandstone to participate in making the resistivity simulation cell cube.
Particularly, the method for making previously described resistivity simulation cell cube (comprising borehole wall imaging detecting unit body) may further comprise the steps:
A., conductive materials (preferably graphite powder) and the water of cement, one or more particles and/or powder type are provided.
B. described conductive materials, described cement and described water are stirred, be made into compound.
C. described compound is carried out molded and shapedly, be made into base substrate.The shape of this base substrate is preferably the annular with central bore, and concrete size is then determined according to concrete test needs.
D. the described base substrate after molded and shaped is placed base tool conformal maintenance a period of time of a respective shapes.This section period was preferably more than 24,36,48 or 60 hours, more preferably was more than 72 hours.
E. the described base substrate after the conformal maintenance is carried out drying and processing.When carrying out this processing, described base substrate preferably was placed in the environment of uniform temperature more than a period of time, and this temperature is preferably more than 100 ℃ or 120 ℃, more preferably is more than 150 ℃, and this section period was preferably more than 1,2,3,4,5,6 or 7 hour, more preferably was more than 8 hours.
Can be used as the resistivity simulation cell cube through the described base substrate behind the drying and processing.But for the resistivity that makes this cell cube in use keeps relative stability, extraneous humidity is reduced to minimum to the impact of resistivity, preferably also can proceed following steps:
F. the base substrate through described drying and processing being carried out the saturated insulating oil that soaks processes.
Here of particular note, in the application's context, term " insulating oil " does not also mean that this material is liquid at normal temperatures, on the contrary, it should be understood as that and comprise those megohmite insulants that have electrical insulation characteristics and can become liquid and still keep electrical insulation characteristics after heating.In the utility model, described insulating oil preferably adopts high melting point paraffin, and it can be described as paraffin oil at the liquid that fusing forms afterwards.Carry out described saturatedly when soaking insulating oil and processing, first described high melting point paraffin heat fused is become paraffin oil, then will immerse fully in the described paraffin oil through the base substrate of described drying and processing.Soak time is not only wanted so that paraffin oil can cover all surface of base substrate, and wants to fill hole wherein so that paraffin oil can fully immerse in the base substrate, and is stable with the resistivity simulation cell cube physical property that guarantees to obtain.Particularly, soak time can be preferably between 0.5-2.0 hour, more preferably was about 1 hour.In an object lesson, the degree of depth of described paraffin oil can be about 1 meter, and this can suitably arrange according to soaking needs certainly.Carried out described saturated soak insulating oil and process after, the resistivity of cell cube can keep relative stability, thereby guarantees the checking precision of the device for subsurface measuring that is verified.
The utility model especially preferably with graphite powder as conducting medium, be because physical property and the chemical property index of graphite all is being to stablize very much below 250 ℃, can not react with cement, adhesive etc. and affect the stable of application life of cell cube and resistivity thereof.Stable, the evengranular conductive materials of other physical and chemical performance also can be used as the other materials such as conducting medium and cement and mixes, and makes the resistivity simulation cell cube.
So far, those skilled in the art will recognize that, although this paper at large illustrates and has described a plurality of exemplary preferred embodiment, but, in the situation that does not break away from the utility model spirit and scope, still can directly determine or derive many other modification or the modification that meets the utility model principle according to the disclosed content of the application.Therefore, scope of the present utility model should be understood and regard as and cover all these other modification or modifications.
Claims (8)
1. the resistivity simulation cell cube of formation at target locations resistivity under the simulation well is characterized in that described resistivity simulation cell cube is the annular element body with central annular distance, and has at least one local feature of demarcating on the surface of described central annular distance.
2. resistivity simulation cell cube according to claim 1 is characterized in that,
The described local feature of demarcating comprises a plurality of grooves and/or the hole with different geometrical size and/or orientation.
3. resistivity simulation cell cube according to claim 1 is characterized in that,
Described resistivity simulation cell cube has the one or more locating holes that axially run through itself.
4. resistivity simulation cell cube according to claim 3 is characterized in that:
The quantity of described locating hole is three, and along same circumference uniform distribution on the end face of described resistivity simulation cell cube.
5. resistivity simulation cell cube according to claim 1 is characterized in that:
Cover or be filled with insulating oil in the hole of all surface of described resistivity simulation cell cube and inside.
6. resistivity simulation cell cube according to claim 1 is characterized in that:
Described resistivity simulation cell cube is made by cement, one or more conductive materials and water.
7. resistivity simulation cell cube according to claim 6 is characterized in that,
Described conductive materials is particle and/or powder type.
8. resistivity simulation cell cube according to claim 6 is characterized in that,
Described conductive materials is graphite powder.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201320089222 CN203239335U (en) | 2013-02-27 | 2013-02-27 | Electrical resistivity simulation unit body used for detecting characteristic indexes of underground measuring instrument |
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| CN 201320089222 CN203239335U (en) | 2013-02-27 | 2013-02-27 | Electrical resistivity simulation unit body used for detecting characteristic indexes of underground measuring instrument |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005756A (en) * | 2013-02-27 | 2014-08-27 | 中国石油集团长城钻探工程有限公司 | Electrical resistivity simulation unit for detecting index of characteristics of down-hole measurement instrument |
| WO2018209713A1 (en) * | 2017-05-17 | 2018-11-22 | 深圳朝伟达科技有限公司 | Indoor testing device and method for high-density resistivity instrument |
-
2013
- 2013-02-27 CN CN 201320089222 patent/CN203239335U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005756A (en) * | 2013-02-27 | 2014-08-27 | 中国石油集团长城钻探工程有限公司 | Electrical resistivity simulation unit for detecting index of characteristics of down-hole measurement instrument |
| CN104005756B (en) * | 2013-02-27 | 2019-07-30 | 中国石油集团长城钻探工程有限公司 | For detecting the resistivity simulation cell cube of device for subsurface measuring characteristic index |
| WO2018209713A1 (en) * | 2017-05-17 | 2018-11-22 | 深圳朝伟达科技有限公司 | Indoor testing device and method for high-density resistivity instrument |
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