CN205643341U - Mistake experimental apparatus is strained to rock core holder and developments - Google Patents
Mistake experimental apparatus is strained to rock core holder and developments Download PDFInfo
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- CN205643341U CN205643341U CN201620471227.9U CN201620471227U CN205643341U CN 205643341 U CN205643341 U CN 205643341U CN 201620471227 U CN201620471227 U CN 201620471227U CN 205643341 U CN205643341 U CN 205643341U
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Abstract
The utility model provides a rock core holder and rely on the developments of its structure to strain the mistake experimental apparatus can realize that it strains unfounded testing to carry out developments to the rock core that takes out in the actual stratum. Be provided with the first through -hole that radially runs through first end cap and barrel, first through -hole setting is at first end cap and rock core juncture, just first through -hole is tangent with the rock core terminal surface, second end cap center is provided with intercommunication rock core and external second through -hole. Can circulate through first through -hole and let in experiment liquid, experiment liquid forms the filter cake in rock core surface current mistake, and the seepage can the simulated formation pressure and the filtrating of flowing out through the second through -hole to the rock core in simultaneously, through the volume of measuring filtrating, combines the velocity of flow and the pressure and the seepage time of experiment liquid, the mistake situation of straining of rock core in the time of can the comprehensive evaluation of well drilling.
Description
Technical field
This utility model relates to testing equipment technical field, is especially a kind of core holding unit and dynamic filtration experimental provision.
Background technology
Along with domestic and international rapid development of economy, oil drilling and producing well are more and more deeper, downhole temperature and pressure are more and more higher, drilling fluid faces down-hole high temperature, high pressure and dynamic technical barrier, drilling fluid filtration characteristics at high temperature under high pressure is required more and more higher, the leak-off experimental provision that can simulate down-hole High Temperature High Pressure and dynamic condition is the indispensable test instrunment of research stratum filtration characteristics, and core holding unit is the core component of leak-off experimental provision.Paper " drilling fluid high-temperature high pressure leak-off method of testing and the comparison of test instrunment " (2015 exploration of oil and gas field and exploitation international conference collection of thesis) describes domestic and international existing static state and dynamic filtration test instrunment, static filtration tester is difficult to simulate current intelligence, and under liftoff layer, practical situation has greater difference；The research and development of Fann company of the U.S., the Model 90 High Temperature High Pressure dynamic filtration instrument produced, use the artificial cores filter cylinder of different permeability as filter medium, filtrate leaches from inside to outside through core cartridge sidewall, and on core cartridge sidewall, form filter cake, the structure of this dynamic filtration instrument is very close to actual leakage prevention structure during drilling well, but the rock core that actual formation is taken out other than ring type, can only play dummy activity, it is difficult to reach the leak-off to actual formation and measure.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of core holding unit and the dynamic filtration experimental provision relying on it to build, it is possible to achieve the rock core taken out in actual formation is carried out dynamic filtration experiment.
The technical solution of the utility model is: a kind of core holding unit, including the first plug, cylinder, packing element, second plug, cylinder is hollow structure, first plug and the second plug are separately positioned on cylinder cavity two ends, rock core is arranged in the middle of the first plug and the second plug, described packing element is arranged around rock core in cylinder chamber body, confined pressure mouth it is provided with on described cylinder, the confined pressure chamber that described confined pressure mouth connection packing element is constituted with barrel wall, it is characterized in that: be additionally provided with the first through hole extending radially through the first plug and cylinder, described first through hole is arranged on the first plug and rock core intersection, and described first through hole is tangent with rock core end face；Described second plug is provided centrally with connecting rock core and the second extraneous through hole.
Can be circulated by the first through hole and be passed through experimental liquid, experimental liquid flows through at core surface, form filter cake, leak in rock core simultaneously, can be with simulated formation pressure and flow out filtrate by the second through hole, by measuring the volume of filtrate, the flow velocity of Binding experiment liquid and pressure and seepage time, can be with the leak-off situation of rock core during overall merit drilling well.
Set-up mode as a kind of described first through hole is, cylinder radially bores through hole, and the first plug intersected with described through hole arranges breach, and described breach both sides arrange the bracer supporting rock core.Arranging breach on plug, experimental liquid can pass through, and a bracer can support rock core, is allowed to be unlikely to be shifted over.
In experimentation, it is often necessary to the performances such as the pressure of rock core are sampled, can be by the following technical solutions: described cylinder, packing element side are provided with boring sample hole.Side arranges boring sample hole, both can reach the purpose of sampling, and be unlikely to again to affect the test of leak-off.
A kind of preferably set-up mode as described boring sample hole is: cylinder and rock core correspondence position are radially arranged sampling plug installing hole, described sampling plug installing hole is provided with screw thread, it is provided with matched screw thread on sampling plug, described sampling plug is by being threadably mounted in sampling plug installing hole, described sampling plug end is provided with trapezoidal counterbore, the corresponding packing element outer surface of sampling plug is provided with the circular protrusions corresponding with described trapezoidal counterbore, the end diameter of described circular protrusions is less than the larger diameter with trapezoidal counterbore, small diameter more than trapezoidal counterbore, after sampling plug is installed, described circular protrusions is inserted described trapezoidal counterbore and compresses；Arranging thief hole in described sampling plug, circular protrusions, probe tube inserts in thief hole.
When sampled part is installed, probe tube is firstly inserted in packing element circular protrusions in the thief hole arranged, then sampling plug is enclosed within probe tube, make the screw thread alignment on sampling plug and sampling plug installing hole, screw in sampling plug, the trapezoidal counterbore inner surface of sampling plug end touches circular protrusions outer ring, along with sampling the descending of plug, circular protrusions outer ring is gradually oppressed by trapezoidal counterbore inner surface, so that circular protrusions outer surface and trapezoidal counterbore compress, packing element thief hole inner surface compresses with probe tube outer round surface, thus seal and fixing probe tube.This mode is simple and feasible, and structure is reliable, workable.
A kind of better embodiment as packing element: described packing element end and cylinder contact position are provided with hook-type lip.After confined pressure chamber is full of confined pressure liquid, the confined pressure liquid of band pressure forces lip to be adjacent to cylinder inboard wall, and confined pressure hydraulic coupling is the biggest, and lip is the tightest with what cylinder inboard wall pasted, so that confined pressure chamber can effectively be sealed.
Another embodiment as packing element: described packing element wraps up the second plug, described second plug coordinates the diameter at the frustroconical that is shaped as at place, described packing element and the second plug cooperation when relaxed state less than the second plug with packing element.During installation, being inserted in packing element by the second plug, along with the entrance of the second plug, packing element inner surface gradually presses close to plug outer surface, and during to final position, packing element is strutted by the second plug, and packing element inner surface is adjacent to the second plug outer surface.
A kind of improvement of a kind of core holding unit of the present utility model, described first plug is provided centrally with connecting rock core and extraneous third through-hole.In use, the first through hole can be closed, by the second through hole and third through-hole, rock core displacement test can be done.
This utility model also provides for a kind of dynamic filtration experimental provision relied on constructed by core holding unit, it is characterised in that: the external circulating pump of pipeline is passed through at the first through hole two ends, circulating pump pump into experimental liquid inside the first through hole；Confined pressure mouth connects confined pressure front pump by pipeline, confined pressure front pump pump into confined pressure liquid to confined pressure intracavity；The outlet of the second through hole connects the entrance of counterbalance valve by pipeline, and the outlet of counterbalance valve connects liquid-volume measurement apparatus.
During experiment, first tested rock core is arranged between the first plug and the second plug, is fixed；Then starting confined pressure front pump and be passed through confined pressure liquid to confined pressure chamber by confined pressure mouth, confined pressure liquid is full of confined pressure chamber, and oppresses packing element and hold tested rock core tightly, thus fixes rock core；Start circulating pump, experimental liquid is pumped in the first through hole, described experimental liquid continues to flow through from core surface, experimental liquid invades rock core, and enter the second through hole, make rock core and the second through hole keep certain pressure by counterbalance valve, this pressure is in order to the pressure of liquid in simulated formation, the pressure improving experimental liquid makes it higher than the pressure of the second through hole, experimental liquid passes through rock core, by counterbalance valve influent metering device, the elution volume of experimental liquid combines pressure, flow velocity, flow, the parameters such as temperature can carry out comprehensive study to the character of rock core and state.
nullWhen carrying out leak-off experiment，Need to be passed through the experimental liquid of pressure stability to the first through hole，Using dosing pump to carry out pressure stability is a kind of preferably mode，But in order to simulate the practical situation of different drilling fluid，Experimental liquid often has highly acid or strong basicity or corrosivity，Directly experimental liquid is flowed into dosing pump will corrode the pump housing，Affect the normal operation of dosing pump，A kind of improvement as a kind of dynamic filtration experimental provision to the present invention，Also comprise intermediate receptacle，Described intermediate receptacle is by cylinder body、Left plug、Right plug and intermediate piston composition，Described cylinder body is hollow structure，Described left plug and right plug are respectively and fixedly installed to cylinder body both sides，Described left plug is provided with left plug opening，Described right plug is provided with right plug opening，Described left plug opening and right plug opening and cylinder body、Left plug、The cavity connection that right plug surrounds，Described intermediate piston is arranged on cylinder body、Left plug、In the cavity that right plug surrounds，And can move left and right，Cylinder body、Intermediate piston、Left plug forms left chamber，Cylinder body、Intermediate piston、Right plug forms right chamber；The pipeline being connected with the second through hole is provided with bypass, and described bypass connects the right plug opening of intermediate receptacle, and the left plug opening of described intermediate receptacle connects dosing pump.
During experiment, experimental liquid is entered in right chamber by right plug opening, and cleaning liquid is pumped into left chamber by dosing pump, and the intermediate piston that can move left and right both had played the effect in isolation chamber, left and right, also functions to transmit left and right cavity pressure so that it is the effect of balance simultaneously；Adopt in this way, the pressure of Control release liquid on the premise of can cleaning ensureing dosing pump.
During experiment, generally require measurement rock core pressure, following technical scheme can be used: described cylinder, packing element side are provided with boring sample hole；Described boring sample hole connects pressure gauge.By boring sample hole and pressure gauge, in that context it may be convenient to understand the pressure within rock core.
Accompanying drawing explanation
Fig. 1 is a kind of embodiment of the core holding unit of the present utility model sectional view by axis.
Fig. 2 is the A-A sectional view of core holding unit in Fig. 1.
Fig. 3 is the partial enlarged drawing of core holding unit in Fig. 1.
Fig. 4 is the schematic diagram of the embodiment using the dynamic filtration experimental provision constructed by core holding unit in Fig. 1.
Detailed description of the invention
Embodiment one
A kind of embodiment of core holding unit is described in conjunction with accompanying drawing 1, Fig. 2, Fig. 3.
As shown in Figure 1: core holding unit 1 includes the first plug 11, cylinder 12, packing element the 14, second plug 15, cylinder 12 is hollow structure, first plug 11 and the second plug 15 are separately positioned on cylinder 12 cavity two ends, rock core 13 is arranged in the middle of the first plug 11 and the second plug 15, packing element 14 is installed around rock core 13, it is provided with confined pressure mouth 123 on described cylinder 12, described confined pressure mouth 123 connects the confined pressure chamber 16 that packing element 14 is constituted with barrel wall, and described second plug 15 is provided centrally with connecting rock core 13 and the second extraneous through hole；Being additionally provided with the first through hole extending radially through the first plug 11 and cylinder 12 on core holding unit 1, described first through hole is arranged on the first plug 11 and rock core 13 intersection, and described first through hole is tangent with rock core 13.
First plug 11 is provided centrally with connecting rock core 13 and extraneous third through-hole.In use, the first through hole can be closed, by the second through hole and third through-hole, rock core displacement test can be done.
In order to easy for installation, in Fig. 1, the first plug 11 is made up of front plug 111 and front pressing cap 112, front pressing cap 112 is linked together with cylinder 12 by screw thread, front pressing cap 112 compresses front plug 111, front plug 111 centre drill third through-hole, and the mouth being in communication with the outside of described third through-hole is screwed hole 1111.Second plug 15 is made up of rear adjusting lever 151, rear pressing cap 152, rear plug 153 and adjustment block 154, and rear adjusting lever 151, adjustment block 154 centre drill the second through hole, the mouth that described second through hole is in communication with the outside is screwed hole 1511.Rear plug 153 inserts cylinder 12 and is connected with packing element 14, rear pressing cap 152 and cylinder 12 are threaded connection, adjustment block 154 loads in packing element, after the insertion of rear adjusting lever 151 in plug 153, rear pressing cap 153, it is connected with rear pressing cap 152 by screw thread, compress rock core 13 by adjustment block 154, by the screw-in depth of after being taken in and out adjustment block 154, adjusting the 151 of adjusting lever with rear pressing cap 153, be adapted to the rock core 13 of different length.
Packing element 14 wraps up adjustment block 154, rear plug 153, rear adjusting lever 151(are the part of the second plug 15), rear plug 153 coordinates the frustroconical that is shaped as at place with packing element 14, and described packing element 14 coordinates the relaxed diameter at place less than rear plug 153 with rear plug 153.During installation, rear plug 153 is inserted in packing element 14, along with the entrance of rear plug 153, packing element 14 inner surface gradually presses close to rear plug 153 outer surface, and during to final position, packing element 14 is strutted by rear plug 153, packing element 14 inner surface be adjacent to and seal after plug 153 outer surface, easy for installation, seal reliable.
As shown in Figure 1, 2, the set-up mode of the first through hole is, cylinder 12 radially bores through hole, and the front plug 111 (part for the first plug) intersected with described through hole arranges breach 1112, and described breach 1112 both sides arrange the bracer 1113 supporting rock core 13.Arranging breach 1112 on plug, experimental liquid can pass through, and a bracer 1113 supports rock core 13, is allowed to be unlikely to be shifted over, and the first through hole two ends arrange inlet 121 and liquid outlet 122.
As shown in Figure 1, 2, can be circulated by inlet 121 and liquid outlet 122 and be passed through experimental liquid, experimental liquid flows through at core surface, form filter cake, leak in rock core simultaneously, can be with simulated formation pressure and flow out filtrate by the second through hole, by measuring the volume of filtrate, the flow velocity of Binding experiment liquid and pressure and seepage time, can be with the leak-off situation of rock core during overall merit drilling well.
Such as Fig. 1, shown in 3, cylinder 12 and rock core 13 correspondence position are radially arranged sampling plug installing hole 124, described sampling plug installing hole 124 is provided with screw thread, it is provided with matched screw thread on sampling plug 17, described sampling plug 17 is by being threadably mounted in sampling plug installing hole 124, described sampling plug 17 end is provided with trapezoidal counterbore 171, corresponding packing element 14 outer surface of sampling plug 17 is provided with the circular protrusions 141 corresponding with described trapezoidal counterbore 171, the end diameter d1 of described circular protrusions 141 is less than larger diameter D with trapezoidal counterbore 171, small diameter d more than trapezoidal counterbore 171, after sampling plug 17 is installed, described circular protrusions 141 is inserted described trapezoidal counterbore 171 and compresses；Arranging thief hole in described sampling plug 17, circular protrusions 141, probe tube 18 inserts in thief hole.
When sampled part is installed, probe tube 18 is firstly inserted in packing element circular protrusions 141 in the thief hole arranged, then sampling plug 17 is enclosed within probe tube 18, make the screw thread alignment on sampling plug 17 and sampling plug installing hole 124, screw in sampling plug 17, trapezoidal counterbore 171 inner surface of sampling plug 17 end touches circular protrusions 141 outer ring, along with sampling the descending of plug 17, circular protrusions 141 outer ring is gradually oppressed by trapezoidal counterbore 171 inner surface, so that circular protrusions 141 outer surface compresses with trapezoidal counterbore 171, packing element 14 thief hole inner surface compresses with probe tube 18 outer round surface, thus seal and fixing probe tube 18.This mode is simple and feasible, and structure is reliable, workable.
As it is shown on figure 3, packing element 14 end and cylinder 12 contact position are provided with hook-type lip 142.After confined pressure chamber 16 is full of confined pressure liquid, the confined pressure liquid of band pressure forces lip 142 to be adjacent to cylinder 12 inwall, and confined pressure hydraulic coupling is the biggest, and lip 142 is the tightest with what cylinder 12 inwall pasted, so that confined pressure chamber 16 can effectively be sealed.
Embodiment two:
Embodiment two is the embodiment using the dynamic filtration experimental provision constructed by core holding unit in embodiment one to carry out dynamic filtration experiment.
As shown in Figure 4, circulating pump 5 exports and connects inlet 121 by pipeline, and circulating pump 5 entrance connects liquid outlet 122 by pipeline, circulating pump 5 pump into experimental liquid inside the second through hole；Confined pressure mouth 123 connects confined pressure front pump 4 by pipeline, confined pressure front pump 4 pump into confined pressure liquid in confined pressure chamber 16；The hole 1111 being in communication with the outside of third through-hole blocks.The mouth screwed hole 1511 that second through hole is in communication with the outside connects the entrance of counterbalance valve 2 by pipeline, and the outlet of counterbalance valve 2 connects liquid-volume measurement apparatus 3.Probe tube 18 connects pressure gauge 8 by pipeline, by boring sample hole and pressure gauge, in that context it may be convenient to understanding the pressure within rock core, cylinder 12 installs temperature measuring equipment 9.
The pipeline being connected with circulating pump 5 arranges bypass, connects the right plug opening 711 of intermediate receptacle 7, and the left plug opening 741 of intermediate receptacle 7 connects dosing pump 6.The structure of intermediate receptacle 7 is: intermediate receptacle 7 is by cylinder body 72, left plug 74, right plug 71 and intermediate piston 73 form, described cylinder body 72 is hollow structure, described left plug 74 and right plug 71 are respectively and fixedly installed to cylinder body 72 both sides, described left plug 74 is provided with left plug opening 741, described right plug 71 is provided with right plug opening 711, described left plug opening 741 and right plug opening 711 and cylinder body 72, left plug 74, the cavity connection that right plug 71 surrounds, described intermediate piston 73 is arranged on cylinder body 72, left plug 74, in the cavity that right plug 71 surrounds, and can move left and right, cylinder body 72, intermediate piston 73, left plug 74 forms left chamber 75, cylinder body 72, intermediate piston 73, right plug 71 forms right chamber 76.
During experiment, being arranged between front plug 111 and adjustment block 154 by tested rock core 13, rear plug 151 screws in and compresses；Then starting confined pressure front pump 4 and be passed through confined pressure liquid to confined pressure chamber 16 by confined pressure mouth 123, confined pressure liquid is full of confined pressure chamber 16, and oppresses packing element 14 and hold tested rock core 13 tightly, starts circulating pump 4, pumps into and be full of experimental liquid in the first through hole.
After circulating pump 5, pipeline, the first through hole stable circulation, start dosing pump 6, cleaning liquid is pumped into left chamber 75, intermediate piston 73 is driven to move, oppress in the blood circulation that the experimental liquid in right chamber 76 enters circulating pump 5, pipeline, the first through hole, thus improve the pressure in the first through hole to experimental pressure, by dosing pump intermediate piston 73, the pressure in control the first through hole indirectly.The piston 73 moved left and right both had played the effect in isolation chamber, left and right, also functioned to transmit left and right cavity pressure so that it is the effect of balance simultaneously, the pressure of Control release liquid on the premise of can cleaning ensureing dosing pump 6.
Described experimental liquid continues to flow through from rock core 13 surface, experimental liquid invades rock core 13, and enter the second through hole, make rock core 13 and the second through hole keep certain pressure by counterbalance valve 2, this pressure is in order to the pressure of liquid in simulated formation, the pressure improving experimental liquid makes it higher than the pressure of the second through hole, experimental liquid passes through rock core 13, by counterbalance valve 2 influent metering device 3, pressure in rock core 13 is measured, by temperature measuring equipment 9 measure analog ambient temperature by pressure gauge 8.
The elution volume of experimental liquid combines the parameters such as pressure, flow velocity, flow, temperature can carry out comprehensive study to the character of rock core and state.
Embodiment three:
Embodiment two is the embodiment using the core holding unit in embodiment one to carry out displacement test.
Sealing thread mouth 121 and screw thread mouth 122, be passed through experimental liquid by hole 1111, and experimental liquid flows through from rock core 13, flows in the second through hole, is derived by screwed hole 1511 and measured, carries out forward displacement test.
Sealing thread mouth 121 and screw thread mouth 122, be passed through gas by screwed hole 1511, orders about experimental liquid and flows out from rock core 13, flows in third through-hole, is derived by hole 1111 and measured, carry out reverse displacement experiment.
The present embodiment does not has accompanying drawing.
Claims (10)
1. a core holding unit, including the first plug, cylinder, packing element, second plug, cylinder is hollow structure, first plug and the second plug are separately positioned on cylinder cavity two ends, rock core is arranged in the middle of the first plug and the second plug, described packing element is arranged around rock core in cylinder chamber body, confined pressure mouth it is provided with on described cylinder, the confined pressure chamber that described confined pressure mouth connection packing element is constituted with barrel wall, it is characterized in that: be additionally provided with the first through hole extending radially through the first plug and cylinder, described first through hole is arranged on the first plug and rock core intersection, and described first through hole is tangent with rock core end face；Described second plug is provided centrally with connecting rock core and the second extraneous through hole.
Core holding unit the most according to claim 1, it is characterised in that: the set-up mode of described first through hole is, cylinder radially bores through hole, and the first plug intersected with described through hole arranges breach, and described breach both sides arrange the bracer supporting rock core.
Core holding unit the most according to claim 1 and 2, it is characterised in that: described cylinder, packing element side are provided with boring sample hole.
Core holding unit the most according to claim 3, it is characterized in that: the set-up mode in described boring sample hole is: cylinder and rock core correspondence position are radially arranged sampling plug installing hole, described sampling plug installing hole is provided with screw thread, it is provided with matched screw thread on sampling plug, described sampling plug is by being threadably mounted in sampling plug installing hole, described sampling plug end is provided with trapezoidal counterbore, the corresponding packing element outer surface of sampling plug is provided with the circular protrusions corresponding with described trapezoidal counterbore, the end diameter of described circular protrusions is less than the larger diameter with trapezoidal counterbore, small diameter more than trapezoidal counterbore, after sampling plug is installed, described circular protrusions is inserted described trapezoidal counterbore and compresses；Arranging thief hole in described sampling plug, circular protrusions, probe tube inserts in thief hole.
5. according to the core holding unit described in any one of claim 1 to 2, it is characterised in that: described packing element end and cylinder contact position are provided with hook-type lip.
6. according to the core holding unit described in any one of claim 1 to 2, it is characterized in that: described packing element wraps up the second plug, described second plug coordinates the diameter at the frustroconical that is shaped as at place, described packing element and the second plug cooperation when relaxed state less than the second plug with packing element.
7. according to the core holding unit described in any one of claim 1 to 2, it is characterised in that: described first plug is provided centrally with connecting rock core and extraneous third through-hole.
8. the dynamic filtration experimental provision of use core holding unit described in any one of claim 1 to 7, it is characterised in that: the external circulating pump of pipeline is passed through at the first through hole two ends, circulating pump pump into experimental liquid inside the first through hole；Confined pressure mouth connects confined pressure front pump by pipeline, confined pressure front pump pump into confined pressure liquid to confined pressure intracavity；The outlet of the second through hole connects the entrance of counterbalance valve by pipeline, and the outlet of counterbalance valve connects liquid-volume measurement apparatus.
The dynamic filtration experimental provision of core holding unit the most according to claim 8, it is characterized in that: also comprise intermediate receptacle, described intermediate receptacle is by cylinder body, left plug, right plug and intermediate piston composition, described cylinder body is hollow structure, described left plug and right plug are respectively and fixedly installed to cylinder body both sides, described left plug is provided with left plug opening, described right plug is provided with right plug opening, described left plug opening and right plug opening and cylinder body, left plug, the cavity connection that right plug surrounds, described intermediate piston is arranged on cylinder body, left plug, in the cavity that right plug surrounds, and can move left and right；The pipeline being connected with the first through hole is provided with bypass, and described bypass connects the right plug opening of intermediate receptacle, and the left plug opening of described intermediate receptacle connects dosing pump.
The dynamic filtration experimental provision of core holding unit the most according to claim 7, it is characterised in that: described cylinder, packing element side are provided with boring sample hole；Described boring sample hole connects pressure gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620471227.9U CN205643341U (en) | 2016-05-23 | 2016-05-23 | Mistake experimental apparatus is strained to rock core holder and developments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620471227.9U CN205643341U (en) | 2016-05-23 | 2016-05-23 | Mistake experimental apparatus is strained to rock core holder and developments |
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| Publication Number | Publication Date |
|---|---|
| CN205643341U true CN205643341U (en) | 2016-10-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620471227.9U Withdrawn - After Issue CN205643341U (en) | 2016-05-23 | 2016-05-23 | Mistake experimental apparatus is strained to rock core holder and developments |
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| CN (1) | CN205643341U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105842425A (en) * | 2016-05-23 | 2016-08-10 | 青岛中瑞泰软控技术有限公司 | Core holding unit and dynamic filtrate loss test unit |
-
2016
- 2016-05-23 CN CN201620471227.9U patent/CN205643341U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105842425A (en) * | 2016-05-23 | 2016-08-10 | 青岛中瑞泰软控技术有限公司 | Core holding unit and dynamic filtrate loss test unit |
| CN105842425B (en) * | 2016-05-23 | 2017-12-01 | 青岛中瑞泰软控科技股份有限公司 | A kind of core holding unit and dynamic filtration experimental provision |
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Address after: 266109 Shandong city of Qingdao province high tech Zone Songyuan Road No. 17 Qingdao Industrial Technology Research Institute A District 4 floor A1 Building Room 403 Patentee after: The Tai Ruan of Qingdao China and Sweden control techniques company limited Address before: Miao road Laoshan District 266061 Shandong city of Qingdao province 6-8 Patentee before: The Tai Ruan of Qingdao China and Sweden control techniques company limited |
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| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 266109 Shandong city of Qingdao province high tech Zone Songyuan Road No. 17 Qingdao Industrial Technology Research Institute A District 4 floor A1 Building Room 403 Patentee after: Qingdao mesnac Co. Ltd. Ruitai technology stocks Address before: 266109 Shandong city of Qingdao province high tech Zone Songyuan Road No. 17 Qingdao Industrial Technology Research Institute A District 4 floor A1 Building Room 403 Patentee before: The Tai Ruan of Qingdao China and Sweden control techniques company limited |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20161012 Effective date of abandoning: 20171201 |
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| AV01 | Patent right actively abandoned |