CN103969062B - Downhole tool high-voltage combination experimental wwll cylinder - Google Patents
Downhole tool high-voltage combination experimental wwll cylinder Download PDFInfo
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- CN103969062B CN103969062B CN201310032064.5A CN201310032064A CN103969062B CN 103969062 B CN103969062 B CN 103969062B CN 201310032064 A CN201310032064 A CN 201310032064A CN 103969062 B CN103969062 B CN 103969062B
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Abstract
The invention discloses a kind of downhole tool high-voltage combination experimental wwll cylinder, it includes a cylinder, has to accommodate the cavity of tested downhole tool, and this cylinder top fixes one in order to the clamping components being connected with loading equipemtn；One in order to isolate described tested downhole tool and the sleeve member of cylinder, and this sleeve member is arranged in the cavity of cylinder；And one in order to seal the upper seal of described cylinder upper end and in order to the lower seal of sealed cylinder lower end；It is improved by: be provided with torsion carrying structure between described sleeve member and clamping components, so that clamping components is circumferentially fixed with sleeve member.It has the beneficial effects that: by arranging torsion carrying structure between clamping components and sleeve member, make the sleeve member in cylinder can bear torsional load, torsional moment on the workpiece of tested down-hole reaches clamping components by sleeve member, it is transferred to and the loading equipemtn of clamping components external connection by clamping components again, so, the test of tested downhole tool torsional load can be completed.
Description
[technical field]
The present invention relates to Oil/gas Well downhole tool high temperature and high pressure environment simulation test device, particularly to a kind of downhole tool super-pressure compbined test pit shaft.
[background technology]
In order to meet the demand of petroleum resources Exploitation research, including unconventionaloil pool well well-completing process and the development need of downhole tool, the performance of relevant brill, the know-why of well-completing process and brill, completion tool is carried out indoor detection test and becomes more and more important.To this end, build HTHP full scale tests pit shaft, complete the endurancing under the measuring mechanical property of all kinds of downhole tool, high-temperature and high-pressure conditions and full-scale instrument combination property detection etc., provide scientific basis for replenishment of process, the instrument that improves.
Oil/gas Well downhole tool compbined test environmental requirement experimental rig possesses provides upper cavity pressure, lower cavity pressure, center cavity pressure, mechanical pressure, mechanical tensile forces and the ability of torsional load for subjects, as accommodating the simulated test pit shaft of subjects in addition to bearing HTHP and machinery pressure, in addition it is also necessary to undertake torsional load.
At present, simulated test well uses the special high-pressure cylinder for specific standard instrument or adapts to the double-decker mode of different size instrument, outer layer is high voltage bearing carrying thick-walled pipe manufacture, internal layer uses multi-segment structure and connects into an internal lining pipe, can reach change the purpose of instrument specification under test well and change the hub sections damaged with the more resleeve of low cost.Existing experimental wwll cylinder can not undertake torsional load mostly, and the experimental wwll cylinder especially with lining all can not undertake torsional load.
[summary of the invention]
It is an object of the invention to effectively overcome the deficiency of above-mentioned technology, it is provided that a kind of downhole tool high-voltage combination experimental wwll cylinder carrying circumference torsional load.
The technical scheme is that and be achieved in that: a kind of downhole tool high-voltage combination experimental wwll cylinder, it includes
One cylinder, has to accommodate the cavity of tested downhole tool, and this cylinder top fixes one in order to the clamping components being connected with loading equipemtn；
One in order to isolate described tested downhole tool and the sleeve member of cylinder, and this sleeve member is arranged in the cavity of described cylinder；
And one in order to seal the upper seal and of described cylinder upper end in order to seal the lower seal of described cylinder lower end；It is improved by:
It is provided with torsion carrying structure between described sleeve member and described clamping components, so that clamping components is circumferentially fixed with sleeve member, the torsional moment on tested downhole tool is transferred to loading equipemtn by clamping components.
Below technique scheme is expanded on further:
Further, described sleeve member includes that lining and gasket seal, described gasket seal are arranged at described lining upper end, and its inner surface is connected with described seal with buss, and outer surface is tightly connected with described cylinder inboard wall.
Further, the first torsion carrying structure it is provided with between described gasket seal and described lining, so that gasket seal is circumferentially fixed with described lining；The second torsion carrying structure it is provided with, so that clamping components is circumferentially fixed with described gasket seal between described clamping components and described gasket seal.
Further, described lower seal is provided with the fixture being revealed in outside cylinder, is provided with the 3rd torsion carrying structure, so that lining is circumferentially fixed with described lower seal between described lining bottom and described lower seal.
Further, described lining lower end connects a transfer tube, is provided with the 4th torsion carrying structure, so that lining is circumferentially fixed with described transfer tube between described lining and transfer tube；
Described lower seal is provided with the fixture being revealed in outside cylinder, is provided with the 5th torsion carrying structure, so that transfer tube is circumferentially fixed with described lower seal between described transfer tube bottom and described lower seal.
Further, the pin-and-hole B and described first reverse pin-and-hole A that carrying structure includes being arranged at gasket seal sidewall, being arranged at lining sidewall is plugged in described pin-and-hole A and pin-and-hole B, so that the bearing pins that lining is circumferentially fixed with gasket seal；
Described second reverses carrying structure includes the non-circular hole being arranged on clamping components and is positioned at the circular loop edge part of gasket seal upper end, described circular loop edge part is arranged in described non-circular hole, so that gasket seal is circumferentially fixed with clamping components.
Further, described first reverses carrying structure includes the stopper slot being axially disposed on described gasket seal inner peripheral surface and is arranged at the projection on excircle of bushing side face, described projection is arranged in described stopper slot, so that lining is circumferentially fixed with gasket seal.
Further, described first torsion carrying structure includes the internal thread being arranged on described gasket seal inner peripheral surface and is arranged on excircle of bushing side face, the external screw thread matched with described internal thread.
Further, described 3rd torsion carrying structure includes that the draw-in groove A, described protuberance A that are arranged at lining lower end protuberance A and are arranged in lower seal are arranged in described draw-in groove A, so that lining is circumferentially fixed with lower seal.
Further, the described 4th reverses carrying structure includes being arranged at lining lower end protuberance B and being arranged at the draw-in groove B of transfer tube upper end, and described protuberance B is arranged in described draw-in groove B, so that lining is circumferentially fixed with transfer tube；
Described 5th reverses carrying structure includes that the draw-in groove C, described protuberance C that are arranged at transfer tube lower end protuberance C and are arranged in lower seal are arranged in described draw-in groove C, so that transfer tube is circumferentially fixed with lower seal.
The beneficial effects of the present invention is: the present invention is by arranging torsion carrying structure between clamping components and sleeve member, make the sleeve member in cylinder can bear torsional load, torsional moment on the workpiece of tested down-hole reaches clamping components by sleeve member, it is transferred to and the loading equipemtn of clamping components external connection by clamping components again, so, the test of tested downhole tool torsional load can be completed.
[accompanying drawing explanation]
Fig. 1 is the sectional view of the embodiment of the present invention one；
Fig. 2 is the partial enlarged drawing in Fig. 1 at I；
Fig. 3 is the explosive view of the embodiment of the present invention one；
Fig. 4 is the sectional view of the embodiment of the present invention two；
Fig. 5 is the first a kind of structural representation reversing carrying structure in the embodiment of the present invention two；
Fig. 6 is the first a kind of structural representation reversing carrying structure in the embodiment of the present invention two；
Fig. 7 is the sectional view of the embodiment of the present invention three；
Fig. 8 is the 3rd structural representation reversing carrying structure in the embodiment of the present invention three；
Fig. 9 is the sectional view of the embodiment of the present invention four；
Figure 10 is the 4th structural representation reversing carrying structure and the 5th torsion carrying structure in the embodiment of the present invention four；
Reference:
Cylinder 10；Upper pressurizing port 11；Lower pressurizing port 12；
Lining 20；Pin-and-hole A21；Protruding 22；External screw thread 23；Protuberance A24；Draw-in groove B25；Flowing hole C26；Flowing hole B27；
Gasket seal 30；Flowing hole A31；Annular groove 32；Pin-and-hole B33；Stopper slot 34；Internal thread 35；
Clamping components 40；Non-circular hole 41；
Upper seal head 50；Upper seal head pressing plate 60；Seal 70；Seal pressure cap 80；
Lower seal head 90；Fixture 91；Draw-in groove A92；Lower seal head pressure ring 100；
Bearing pins 110；Airtight and watertight padding 120；Seal with buss pressure cap 130；
Transfer tube 140；Protuberance B141；Protuberance C142；
Tested downhole tool 300；Connecting rod 310；Set 320；Upper sub-cavity 330；Lower sub-cavity 340.
[detailed description of the invention]
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
Embodiment one
Referring to figs. 1 through shown in Fig. 3, the downhole tool high-voltage combination experimental wwll cylinder that the present invention discloses, for testing downhole tool, it includes a cylinder 10 that can bear high pressure, one in order to isolate described tested downhole tool 300 and the sleeve member of cylinder 10 and one in order to seal the upper seal and of described cylinder 10 upper end in order to seal the lower seal of described cylinder 10 lower end, wherein, cylinder 10 has to accommodate the cavity of tested downhole tool 300, tested downhole tool 300 is arranged in sleeve member, this cylinder 10 top is provided with one in order to the clamping components 40 being connected with loading equipemtn, this clamping components 40 is dismountable is connected to cylinder 10 top, in the present embodiment, this clamping components 40 is a square flange disk-like structure.
nullSleeve member is arranged in the cavity of described cylinder 10，This sleeve member includes lining 20 and gasket seal 30，Lining 20 external diameter is less than described cylinder 10 internal diameter，So that forming annular chamber between lining 20 external peripheral surface and cylinder 10 inwall，Avoid lining 20 deformation cause cannot from cylinder 10 problem such as taking-up，Described gasket seal 30 lower end is sheathed on described lining 20 upper end，Its inner surface is tightly connected with described lining 20，Outer surface is connected with described cylinder 10 inner wall sealing，Concrete，Sealing between gasket seal 30 inner surface and lining 20 can use sealing ring to seal，I.e. a sealing ring is set between lining 20 outer surface and gasket seal 30 lower end inner surface，May be used without packing seal，Between lining 20 outer surface and gasket seal 30 lower end inner surface, i.e. fill a circle airtight and watertight padding 120，A sheathed seal with buss pressure cap 130 on lining 20 again，The outer circumference surface of this seal with buss pressure cap 130 upper end is threadeded with described gasket seal 30 lower end inner peripheral surface，To compress described airtight and watertight padding 120；Sealing between gasket seal 30 outer surface and cylinder 10 inwall can use sealing ring to seal.
Upper seal includes seal head 50 and upper seal head pressing plate 60, upper seal head 50 lower end is tightly connected by modes such as sealing rings with described gasket seal 30 upper end, upper seal head pressing plate 60 is arranged on seal head 50, fix with the clamping components 40 on cylinder 10, so that upper seal head 50 is fixed in the axial direction, i.e. limit upper seal head 50 and move up and down；Upper seal head 50 has a centre bore, centre bore is socketed a connecting rod 310, the upper end of connecting rod 310 is stretched out by upper seal head 50, seal 70 it is provided with and for compressing the seal pressure cap 80 of this seal 70, so that being tightly connected between connecting rod 310 and upper seal head 50 between connecting rod 310 and upper seal head 50；In process of the test, tested downhole tool 300 is put into lining 20, and the lower end of connecting rod 310 is stretched into lining 20 and is connected with tested downhole tool 300, and available connecting rod 310 applies pulling force, pressure and torsional moment to tested downhole tool 300.
Lower seal includes lower seal head 90 and lower seal head pressure ring 100, lower seal head 90 external peripheral surface is tightly connected by modes such as sealing rings with cylinder 10 lower end inner circumferential surface, lower seal head pressure ring 100 external peripheral surface is threadeded with cylinder 10 lower end inner circumferential surface, the upper end of lower seal pressure ring abuts against with lower seal head 90, is compressed by lower seal head 90.
The first torsion carrying structure it is provided with, so that gasket seal 30 is circumferentially fixed with described lining 20 between gasket seal 30 and described lining 20；The second torsion carrying structure it is provided with, so that clamping components 40 is circumferentially fixed with described gasket seal 30 between clamping components 40 and described gasket seal 30.
In the present embodiment, the pin-and-hole B33 and one first reverse pin-and-hole A21 that carrying structure includes being arranged at gasket seal 30 sidewall, being arranged at lining 20 sidewall is plugged in described pin-and-hole A21 and pin-and-hole B33, so that the bearing pins 110 that lining 20 is circumferentially fixed with gasket seal 30；Second reverses carrying structure includes the non-circular hole 41 being arranged on clamping components 40 and is positioned at the circular loop edge part of gasket seal 30 upper end, described circular loop edge part is arranged in described non-circular hole 41, so that gasket seal 30 is circumferentially fixed with clamping components 40；When utilizing connecting rod 310 that tested downhole tool 300 is applied torsional moment, due to circumferentially fixed by bearing pins 110 between lining 20 and gasket seal 30, torsional moment can be transferred to gasket seal 30 by lining 20, and between gasket seal 30 with clamping components 40 by circular loop edge part and non-circular hole 41 coordinate achieve circumferentially fixed, therefore, torsional moment can be transferred on clamping components 40 from gasket seal 30, loading equipemtn is reached again by clamping components 40, so, it is achieved that the test of torsional load.Meanwhile, gasket seal 30 is arranged at cylinder 10 upper end, is very easy to the replacing of lining 20, more avoids and cannot take out serious consequence from cylinder 10 due to what lining 20 deformation caused.
In addition, in test, tested downhole tool 300 puts into lining 20, after suppressing and setting 320, the inner chamber of lining 20 is isolated into upper sub-cavity 330 and lower sub-cavity 340, cylinder 10 is provided with the upper pressurizing port 11 being connected with described sub-cavity 330 and the lower pressurizing port 12 being connected with described lower sub-cavity 340, and described upper pressurizing port 11 and lower pressurizing port 12 are positioned at described cylinder 10 sidewall.
In the present embodiment, upper pressurizing port 11 is arranged at cylinder 10 upper end sidewall, it is provided with flowing hole A31 in described gasket seal 30 sidewall, described lining 20 upper end is communicated with the flowing hole B27 of described flowing hole A31 and described sub-cavity 330, in described gasket seal 30, the partial external circumferential surface indentation at flowing hole A31 place forms one in order to connect the annular groove 32 of described upper pressurizing port 11 and flowing hole A31, lower pressurizing port 12 is arranged at described cylinder 10 upper end sidewall, communicates with described lower sub-cavity 340.nullWhen needs apply pressure to upper sub-cavity 330，Fluid media (medium) enters the annular groove 32 on gasket seal 30 outer circumference surface through upper pressurizing port 11，Flowing hole A31 is sequentially passed through again by annular groove 32、Flowing hole B27 enters in sub-cavity 330，When needs apply pressure to lower sub-cavity 340，Fluid media (medium) first enters the annular chamber between cylinder 10 and lining 20 through lower pressurizing port 12，Owing to lining 20 is shorter，Between its lower end and lower seal head 90, there is gap，Therefore，Fluid media (medium) is entered to lower sub-cavity 340 by annular chamber further from described gap，So，Achieve and apply pressure for upper sub-cavity 330 and lower sub-cavity 340，Owing to lower pressurizing port 12 is arranged at cylinder 10 upper end sidewall，So，Can avoid under high intensity is tested，The problems such as lower pressurizing port 12 blocking are caused because tested downhole tool 300 is damaged or pulverizes.
Embodiment two
nullWith reference to shown in Fig. 4，The downhole tool high-voltage combination experimental wwll cylinder that the present embodiment provides is essentially identical with the structure of embodiment one，Its difference is: in the present embodiment, the lower end of lining 20 directly offsets with lower seal head 90，The connection between lining 20 and gasket seal 30 is made to need not carry axial load，So，The first torsion carrying structure between gasket seal 30 and lining 20 both can use structure described in embodiment one，Other structures can also be used，Such as: Fig. 5、Fig. 6 the two structure，As shown in Figure 5，First reverses carrying structure includes the some stopper slots 34 being axially disposed on described gasket seal 30 inner peripheral surface and is arranged at the zigzag projection 22 on lining 20 outer circumference surface，Described protruding 22 are arranged in described stopper slot 34，So that lining 20 is circumferentially fixed with gasket seal 30；As shown in Figure 6, first reverses carrying structure includes the internal thread 35 being arranged on described gasket seal 30 inner peripheral surface and is arranged on lining 20 outer circumference surface, the external screw thread 23 matched with described internal thread 35, now, the torsional load of single direction can only be carried between lining 20 and gasket seal 30.
In addition, owing to lining 20 lower end offsets with lower seal head 90, therefore, flowing hole C26 is offered in lining 20 lower end, so, when needs apply pressure to lower sub-cavity 340, fluid media (medium) enters the annular chamber between cylinder 10 and lining 20 through lower pressurizing port 12, then is entered to lower sub-cavity 340 by annular chamber from described flowing hole C26.
Embodiment three
nullWith reference to shown in Fig. 7 and Fig. 8，The downhole tool high-voltage combination experimental wwll cylinder that the present embodiment provides is essentially identical with the structure of embodiment two，Its difference is: on the basis of embodiment two，The 3rd torsion carrying structure it is provided with between lining 20 bottom and described lower seal，So that lining 20 is circumferentially fixed with described lower seal，Described lower seal is provided with the fixture 91 being revealed in outside cylinder 10，In the present embodiment，3rd reverses the draw-in groove A92 that carrying structure includes being arranged at lining 20 lower end protuberance A24 and being arranged on lower seal head 90，Described protuberance A24 is arranged in described draw-in groove A92，So that lining 20 is circumferentially fixed with lower seal head 90，Described fixture 91 is non-circular structure，It is easy to grip，So，By the fixture 91 on external stability lower seal head 90，The lower end that can make lining 20 also can carry torsional load on tested downhole tool 300.
Embodiment four
With reference to shown in Fig. 9 to Figure 10, the downhole tool high-voltage combination experimental wwll cylinder that the present embodiment provides is essentially identical with the structure of embodiment one, its difference is: lining 20 lower end connects a transfer tube 140, the 4th torsion carrying structure it is provided with, so that lining 20 is circumferentially fixed with described transfer tube 140 between described lining 20 and transfer tube 140；Described lower seal is provided with the fixture 91 being revealed in outside cylinder 10, is provided with the 5th torsion carrying structure, so that transfer tube 140 is circumferentially fixed with described lower seal between described transfer tube 140 bottom and described lower seal.
In the present embodiment, the described 4th reverses carrying structure includes being arranged at lining 20 lower end protuberance B141 and being arranged at the draw-in groove B25 of transfer tube 140 upper end, and described protuberance B141 is arranged in described draw-in groove B25, so that lining 20 is circumferentially fixed with transfer tube 140；Described 5th reverses carrying structure includes that the draw-in groove C, described protuberance C142 that are arranged at transfer tube 140 lower end protuberance C142 and are arranged on lower seal head 90 are arranged in described draw-in groove C, so that transfer tube 140 is circumferentially fixed with lower seal head 90.
So, by the fixture 91 in external stability lower seal, the lower end that can make lining 20 also can carry torsional load on tested downhole tool 300, in addition, having transfer tube 140 owing to lining 20 lower end connects, when testing the shorter downhole tool with grappling, lining 20 easily damages, reduce the length of more resleeve 20, experimentation cost can be saved.
Described above is only presently preferred embodiments of the present invention, and above-mentioned specific embodiment is not limitation of the present invention.In the technological thought category of the present invention, various deformation and amendment can occur, retouching, amendment or the equivalent that all those of ordinary skill in the art are made as described above, belong to the scope that the present invention is protected.
Claims (5)
1. a downhole tool high-voltage combination experimental wwll cylinder, it includes
Cylinder, has to accommodate the cavity of tested downhole tool, this cylinder top fix one in order to loading
The clamping components that equipment connects；
In order to isolate described tested downhole tool and the sleeve member of cylinder, this sleeve member is arranged at described cylinder
In the cavity of body；
And one is close in order to seal under described cylinder lower end in order to seal the upper seal and of described cylinder upper end
Sealing；It is characterized in that:
Torsion carrying structure it is provided with between described sleeve member and described clamping components, so that clamping components and lining
Set component is circumferentially fixed, and by clamping components, the torsional moment on tested downhole tool is transferred to loading equipemtn；
Described sleeve member includes that lining and gasket seal, described gasket seal are sheathed on described lining upper end,
Its inner surface is connected with described seal with buss, and outer surface is tightly connected with described cylinder inboard wall；Described lining is close
The first torsion carrying structure it is provided with between sealing and described lining, so that gasket seal and described lining circumference
Fixing；The second torsion carrying structure it is provided with between described clamping components and described gasket seal, so that clamping
Component is circumferentially fixed with described gasket seal；Described lower seal is provided with the fixture being revealed in outside cylinder,
Be provided with between described lining bottom and described lower seal the 3rd torsion carrying structure so that lining with described under
Seal is circumferentially fixed；Described lining lower end connects a transfer tube, is provided with between described lining and transfer tube
Four reverse carrying structure, so that lining is circumferentially fixed with described transfer tube；Described lower seal is provided with and appears
Fixture outside cylinder, is provided with the 5th torsion carrying knot between described transfer tube bottom and described lower seal
Structure, so that transfer tube is circumferentially fixed with described lower seal；Described 3rd reverses carrying structure includes being arranged at
Lining lower end protuberance A and the draw-in groove A being arranged in lower seal, described protuberance A are arranged in described draw-in groove
In A, so that lining is circumferentially fixed with lower seal.
Downhole tool high-voltage combination experimental wwll cylinder the most according to claim 1, it is characterised in that: described
First reverses carrying structure includes being arranged at the pin-and-hole A of gasket seal sidewall, being arranged at the pin-and-hole of lining sidewall
B and one is plugged in described pin-and-hole A and pin-and-hole B, so that the bearing pins that lining is circumferentially fixed with gasket seal；
Described second reverses carrying structure includes the non-circular hole being arranged on clamping components and is positioned in gasket seal
The circular loop edge part of end, described circular loop edge part is arranged in described non-circular hole, so that
Gasket seal is circumferentially fixed with clamping components.
Downhole tool high-voltage combination experimental wwll cylinder the most according to claim 1, it is characterised in that: described
First reverses carrying structure includes the stopper slot being axially disposed on described gasket seal inner peripheral surface and sets
Being placed in the projection on excircle of bushing side face, described projection is arranged in described stopper slot, so that lining and lining
Seal is circumferentially fixed.
Downhole tool high-voltage combination experimental wwll cylinder the most according to claim 1, it is characterised in that: described
First reverses carrying structure includes the internal thread being arranged on described gasket seal inner peripheral surface and is arranged at lining
On set outer circumference surface, the external screw thread matched with described internal thread.
Downhole tool high-voltage combination experimental wwll cylinder the most according to claim 1, it is characterised in that: described
4th reverses carrying structure includes being arranged at lining lower end protuberance B and being arranged at the draw-in groove B of transfer tube upper end,
Described protuberance B is arranged in described draw-in groove B, so that lining is circumferentially fixed with transfer tube；Described 5th turns round
Vicarious load structure includes the draw-in groove C being arranged at transfer tube lower end protuberance C and being arranged in lower seal, described
Protuberance C is arranged in described draw-in groove C, so that transfer tube is circumferentially fixed with lower seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310032064.5A CN103969062B (en) | 2013-01-25 | 2013-01-25 | Downhole tool high-voltage combination experimental wwll cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310032064.5A CN103969062B (en) | 2013-01-25 | 2013-01-25 | Downhole tool high-voltage combination experimental wwll cylinder |
Publications (2)
| Publication Number | Publication Date |
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| CN103969062A CN103969062A (en) | 2014-08-06 |
| CN103969062B true CN103969062B (en) | 2016-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310032064.5A Expired - Fee Related CN103969062B (en) | 2013-01-25 | 2013-01-25 | Downhole tool high-voltage combination experimental wwll cylinder |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105973578B (en) * | 2016-05-05 | 2018-07-03 | 中国石油集团渤海钻探工程有限公司 | High temperature and pressure test device and operating method |
| CN109254212B (en) * | 2018-09-26 | 2020-10-09 | 中国石油天然气股份有限公司 | High-temperature high-pressure experimental device and experimental method for electronic element or assembly of logging instrument |
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| CN201391271Y (en) * | 2009-04-03 | 2010-01-27 | 中国石油天然气股份有限公司 | Device for detecting pressure resistance and temperature resistance of packer |
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| CN203224370U (en) * | 2013-01-25 | 2013-10-02 | 深圳市弗赛特检测设备有限公司 | High-voltage comprehensive test shaft for downhole tool |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8657004B2 (en) * | 2011-03-22 | 2014-02-25 | Saudi Arabian Oil Company | Sliding stage cementing tool |
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|---|---|---|---|---|
| CN201391271Y (en) * | 2009-04-03 | 2010-01-27 | 中国石油天然气股份有限公司 | Device for detecting pressure resistance and temperature resistance of packer |
| EP2484862A2 (en) * | 2011-02-07 | 2012-08-08 | Weatherford/Lamb, Inc. | Indexing sleeve for single-trip, multi-stage fracing |
| CN202370507U (en) * | 2011-12-06 | 2012-08-08 | 中国石油大学(北京) | Well hole stimulating test device |
| CN202417474U (en) * | 2012-01-10 | 2012-09-05 | 中国石油天然气股份有限公司 | Composite simulation test oil well |
| CN102564702A (en) * | 2012-01-18 | 2012-07-11 | 中国海洋石油总公司 | Device and system for testing packer in formation tester |
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| CN103969062A (en) | 2014-08-06 |
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Address after: 518000, West Coast Building, Nanshan District commercial culture center, Shenzhen, Guangdong, 2010 Applicant after: Shenzhen, Dorset, Polytron Technologies Inc Address before: 518000, West Coast Building, Nanshan District commercial culture center, Shenzhen, Guangdong, 2010 Applicant before: Shenzhen Fluid Science & Technology Co., Ltd. |
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