CN102707032A - Three-axial rock core holding unit - Google Patents

Three-axial rock core holding unit Download PDF

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Publication number
CN102707032A
CN102707032A CN201210154416XA CN201210154416A CN102707032A CN 102707032 A CN102707032 A CN 102707032A CN 201210154416X A CN201210154416X A CN 201210154416XA CN 201210154416 A CN201210154416 A CN 201210154416A CN 102707032 A CN102707032 A CN 102707032A
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CN
China
Prior art keywords
plug
axle pressure
rubber sleeve
cylindrical shell
collar
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CN201210154416XA
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Chinese (zh)
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CN102707032B (en
Inventor
张祖波
吕伟峰
罗蔓莉
陈序
刘庆杰
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中国石油天然气股份有限公司
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Priority to CN201210154416.XA priority Critical patent/CN102707032B/en
Publication of CN102707032A publication Critical patent/CN102707032A/en
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Publication of CN102707032B publication Critical patent/CN102707032B/en

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Abstract

The invention provides a three-axial rock core holding unit, comprising a clamper cylinder body, a rubber sleeve, a first fixing ring, a second fixing ring, a first compacting cap and a second compacting cap, wherein the first compacting cap and the second compacting cap are respectively propped against the side ends of the first fixing ring and the second fixing ring. The three-axial rock core holding unit further comprises a first plug and a second plug, wherein the first plug and the second plug axially penetrate through the first compacting cap and the second compacting cap and are respectively propped against two side ends of a rock core to be tested of the rubber sleeve; an axial pressure piston assembly comprises an axial pressure cylinder body and an axial pressure piston, the axial pressure piston is connected with the first plug through an axial pressure nut, and the first plug is used for applying axial pressure onto the rock core to be tested through the axial sliding of the axial pressure piston; and the first plug and the second plug are respectively detachably connected with the first compacting cap and the second compacting cap. The three-axial rock core holding unit disclosed by the invention has the advantages of convenience for disassembling, convenience for cleaning, good sealing effect, adjustable length of a plug, small test error and wide application range.

Description

Triaxial core holder
Technical field
The present invention relates to a kind of rock core reservoir physical simulation test unit, relate in particular to a kind of multi-usage triaxial core holder.
Background technology
As everyone knows; The exploitation experiment is the basis of oil-gas field development; Not only can also provide method to guarantee for solving the many problems that run in the oil reservoir development for work such as the calculation of reserves of hydrocarbon-bearing pool, development plan establishment, numerical reservoir simulation provide basic oil deposit parameter.Core holding unit is purposes one of infrastructure component the most widely in the exploitation experiment, and nearly all exploitation experiment all will be used core holding unit.
At present; Existing core holding unit mainly divides two types according to pressuring method; A kind of is Ha Shi (Hassler) core holding unit, and it is that rock core is placed in the round rubber cover, places a cylindrical plug of steel with central through hole respectively at the rock core two ends; Through hole at plug is connected to pipeline respectively, can make Experimental Flowing Object cross rock core through pipe flow will.Rubber sleeve places in the circular steel cylinder and with steel cylinder and forms airtight annular space; When annular space is injected highly pressurised liquid; The pressure of highly pressurised liquid acts on the rubber sleeve outer wall, and rubber sleeve is deformed produce radial pressure rock core, but such clamper; Can not produce axle pressure, so its physical parameter of measuring rock core can not truly reflect the stratum stressing conditions.A kind of in addition is triaxial core holder, and it is on the basis of Ha Shi clamper, to improve to form, and has increased the axial pressure device at an end of clamper.Though this triaxial core holder can produce axle pressure to rock core, it still has following some shortcomings part:
1, in measuring the process of rock core, behind rock core of every measurement, all will clean, otherwise that residual rock core particle and foul will cause between plug and the rubber sleeve will be poorly sealed, thereby will cause the fluid leakage plug and rubber sleeve.And because the axial pressure device is fixed on an end of clamper, and the plug that links to each other with the axial pressure device is fixing thereupon, therefore causes loading and unloading sample and cleaning difficulty and cleans clean defective, directly influences measurement effect.
2, existing triaxial core holder owing to adopts between plug and the plug locking cap is threaded, will be when the loading and unloading rock core by a cylinder unit, and inconvenience very, and damage rock core easily.In addition, salt solution accumulates on the screw thread easily in the rock core, causes the screw thread corrosion easily.
3, in measuring process, if sample length alters a great deal, then need cause the loading and unloading difficulty, and cause importing and exporting the dead volume increasing by filling block, cause experimental error to increase.
Because the above-mentioned problems that exist in the prior art; The design people is based on being engaged in relevant manufacturing field rich experiences and strong excessively professional knowledge for many years; Application in conjunction with core holding unit is actual; Actively study innovation, be easy to dismounting in the hope of providing a kind of, be convenient to clean, good sealing effect, plug adjustable length, triaxial core holder that experimental error is little.
Summary of the invention
The purpose of this invention is to provide a kind ofly be easy to dismounting, be convenient to clean, good sealing effect, plug adjustable length, triaxial core holder that experimental error is little.
For achieving the above object; The present invention proposes a kind of triaxial core holder; Comprise: the clamper cylindrical shell; In said clamper cylindrical shell, be provided with rubber sleeve vertically, said rubber sleeve has the cavity that is used to hold rock core to be measured and axial perforation, is inserted with first set collar and second set collar respectively at the two-port place of said rubber sleeve; Have certain interval between the outer wall of said rubber sleeve and the said clamper cylinder inboard wall and form radially confined pressure space; Both end sides at said clamper cylindrical shell is threaded with first clamping cap and second clamping cap respectively, said first clamping cap and second clamping cap respectively with the side of said first set collar and second set collar push up mutually to, said clamper also comprises:
First plug and second plug; Said first plug and second plug run through said first clamping cap and second clamping cap respectively vertically by the outside of said clamper cylindrical shell; And stretch in the cavity of said rubber sleeve, and be resisted against the two side ends of said rock core to be measured respectively;
The axle pressure piston component; Be set on the outer wall of said first plug; Comprise the said axle pressure cylindrical shell and the axle pressure piston that is movably installed in the said axle pressure cylindrical shell that are fixedly arranged on said first clamping cap outside; Said axle pressure piston bush is loaded on the outer wall of said first plug, and said axle pressure piston can endwisely slipping along said first plug
Said axle pressure piston is connected with said first plug through the axle pressure nut, and said first plug applies axle pressure through endwisely slipping of said axle pressure piston to said rock core to be measured;
Said first plug is connected with second clamping cap is removable with said first clamping cap respectively with second plug;
Said first plug is for regulating plug; Said adjusting plug comprises first shaft-like plug body and the shackle; On the said first plug body, offer several draw-in grooves vertically continuously; Said shackle is connected with the outside of said axle pressure nut, and is connected with the draw-in groove buckle of said adjusting plug.
Aforesaid triaxial core holder, wherein, said shackle is to be made up of C shape becket and the spring that connects said becket two ends.
Aforesaid triaxial core holder; Wherein, Said axle pressure nut comprises circular cap body; Side at said cap body convexes with cylindric junction surface vertically, is provided with clamping part vertically at the opposite side of said cap body, and said cylindric junction surface is inserted between the outer wall of inwall and the said first plug body of said axle pressure piston; The outer wall at said cylindric junction surface is connected with the inner thread of said axle pressure piston, and the groove that the side of said clamping part and said shackle is offered is clasped.
Aforesaid triaxial core holder; Wherein, Said second plug is provided with radial protrusion portion, and said second clamping cap is offered radial groove portion, said second plug through said lug boss and said concave part be clasped and said second clamping cap links together removably.
Aforesaid triaxial core holder wherein, offers the radial pressure inlet opening and the radial pressure vent port that are connected with said confined pressure space respectively on the outer wall of said clamper cylindrical shell; On the outer wall of said axle pressure cylindrical shell, offer the axle pressure inlet opening and the axle pressure vent port that are connected with said axle pressure barrel respectively.
Aforesaid triaxial core holder; Wherein, Said first set collar and second set collar include pedestal and frustum-like shape junction surface; Said frustum-like shape junction surface protrudes out setting towards said rubber sleeve, and is plugged in the both sides port of said rubber sleeve respectively, the outer wall at said frustum-like shape junction surface and the inwall interference fit of said rubber sleeve.
Aforesaid triaxial core holder wherein, is respectively equipped with O-ring seal between the inwall of the pedestal of the pedestal of said first set collar and second set collar and said clamper cylindrical shell.
Aforesaid triaxial core holder, wherein, the cavity of said rubber sleeve is the cylinder bodily form or cuboid.
Aforesaid triaxial core holder wherein, to offering first vent port and first inlet opening that connects this first plug body, axially offers first fluid hole that connects this second plug along the said first plug body shaft along said second plug.
Compared with prior art, the present invention has following characteristics and advantage:
1, axle pressure piston component of the present invention is with radially confining pressure device is separate; Therefore can realize radial and axial pressurization respectively; Also can simulate hydrostatic conditions, promptly axially with radially pressurize simultaneously with a pressure source, improve accuracy of detection and detection quality.
2, the present invention is provided with removable plug respectively in the both sides of rock core to be measured, both has been convenient to the dismounting of rock core to be measured, again can be after rock core to be measured detects completion; When clamper inside is cleared up; Can first plug and second plug be pulled down respectively again and clear up, improve whole cleaning quality, avoid residual rock core particle and foul to cause between plug and the gum cover poorly sealed; And cause the generation of fluid leakage phenomenon, and increased the reliability of sealing.
3, the present invention adopts the fast-assembling interface structure between second plug and second clamping cap, and the plug dead volume is little, has reduced experimental error.And have dismounting and change gum cover and loading and unloading sample conveniently, time saving advantage.
4, the present invention is equipped with first plug of adjustable length, can be according to the different length sample, and quick adjustment is avoided the experimental error that is caused by the filling block dead volume in the prior art.
5, the whole profit path of the present invention favorable sealing property, no spiral shell buckle on the profit path is avoided because the leakproofness that spiral shell button corrosion influence device spiral shell when loading and unloading sample is buckled the damage to sample.
Description of drawings
Accompanying drawing described here only is used for task of explanation, and is not intended to limit by any way scope disclosed by the invention.In addition, the shape of each parts among the figure and proportional sizes etc. are merely schematically, be used for helping to understanding of the present invention, and be not shape and the proportional sizes that specifically limits each parts of the present invention.Those skilled in the art can select various possible shapes and proportional sizes to come embodiment of the present invention under instruction of the present invention as the case may be.
Fig. 1 is the cross-sectional view of triaxial core holder of the present invention;
Fig. 2 is the structural representation of shackle of the present invention (among Fig. 1 A-A to);
Fig. 3 is the structural representation of axle pressure nut of the present invention.
Description of reference numerals:
1-clamper cylindrical shell; The 2-rubber sleeve; 3-first set collar; 4-second set collar; 31,41-pedestal; 32,42-frustum-like shape junction surface; 5-first clamping cap; 6-second clamping cap; The 61-concave part; 7-first plug; The 71-first plug body; 72 shackles; The 73-draw-in groove; 74-C shape becket; The 75-spring; The 76-groove; 77-first vent port; 78-first inlet opening; 8-second plug; The 81-lug boss; 82-first fluid hole; 9-axle pressure piston component; 91-axle pressure cylindrical shell; 92-axle pressure piston; 10-rock core to be measured; 11-axle pressure nut; 12-cap body; The cylindric junction surface of 13-; The 14-clamping part; 15-radial pressure inlet opening; 16-radial pressure vent port; The 17-O-ring seal; 18-confined pressure space; The 19-O-ring seal; 20-axle pressure room; 21-axle pressure inlet opening; 22-axle pressure vent port.
Embodiment
In conjunction with the description of the accompanying drawing and the specific embodiment of the invention, can be well understood to details of the present invention more.But embodiment of the present invention described here only is used to explain the object of the invention, is limitation of the present invention and can not be understood as by any way.Under instruction of the present invention, the technician can conceive based on possible distortion arbitrarily of the present invention, and these all should be regarded as and belong to scope of the present invention.
Please refer to Fig. 1, be the cross-sectional view of triaxial core holder of the present invention.As shown in the figure; The triaxial core holder that the present invention proposes; Comprise clamper cylindrical shell 1, rubber sleeve 2, first set collar 3, second set collar 4, first clamping cap 5 and second clamping cap 6, also comprise first plug 7, second plug 8 and be used for the axle pressure piston component 9 that rock core to be measured 10 in rubber sleeve 2 applies axle pressure.Wherein, rubber sleeve 2 is arranged in the clamper cylindrical shell 1 axial cavity that connects vertically, and rubber sleeve 2 has the cavity of axial perforation, is used to hold rock core 10 to be measured.First set collar 3 and second set collar 4 are inserted in the two-port place of rubber sleeve 2 respectively, are used for fixing the position of rubber sleeve 2.Have certain interval between the outer wall of rubber sleeve 2 and clamper cylindrical shell 1 inwall and form radially confined pressure space 18; Through input pressure liquid in confined pressure space 18 radially; Make confined pressure space 18 be radially expanded; Through rubber sleeve 2 radial pressure is passed to rock core 10 to be measured, realizes rock core 10 to be measured is applied the effect of radial pressure.Both end sides at clamper cylindrical shell 1 is respectively equipped with first clamping cap 5 and second clamping cap 6; And first clamping cap 5 and second clamping cap 6 are threaded with the limit wall of clamper cylindrical shell 1 respectively; First clamping cap 5 and second clamping cap 6 respectively with the side of first set collar 3 and second set collar 4 push up mutually to, to clamp first set collar 3 and second set collar 4.First plug 7 and second plug 8 run through first clamping cap 5 and second clamping cap 6 respectively vertically by the outside of clamper cylindrical shell 1; And stretch in the cavity of rubber sleeve 2; And first clamping cap 5 and second clamping cap 6 are resisted against the two side ends of rock core 10 to be measured respectively, thereby rock core 10 to be measured is fixing vertically.Axle pressure piston component 9; Be set on the outer wall of first plug 7; Be used for applying axle pressure to rock core 10 to be measured; This axle pressure piston component 9 comprises axle pressure cylindrical shell 91 that is fixedly arranged on first clamping cap, 5 outsides and the axle pressure piston 92 that is movably installed in the axle pressure cylindrical shell 91, and axle pressure piston 92 is set on the outer wall of first plug 7, and axle pressure piston 92 can endwisely slipping along first plug 7.Axle pressure piston 92 is connected with first plug 7 through axle pressure nut 11; Make the effect lower edge of the pressure liquid that axle pressure piston 92 is externally imported endwisely slip and drive first plug 7 like this and apply axle pressure, thereby realize rock core 10 axial pressure to be measured to rock core 10 to be measured.Like this; Through input pressure liquid in confined pressure space 18 radially; Realized rock core 10 to be measured is applied radial pressure, applied axle pressure to rock core 10 to be measured, realized rock core 10 to be measured is applied axle pressure and drive first plug 7 through axle pressure piston component 9; And then realized rock core 10 radial and axial pressurizations respectively to be measured have also been realized axially and the effect of radially pressurizeing simultaneously with an impressed pressure source.
And, first plug 7 and second plug 8 respectively with first clamping cap 5 and 6 removable being connected of second clamping cap.So both be convenient to the dismounting of rock core to be measured; Again can be after rock core to be measured detects completion; When clamper inside is cleared up, first plug 7 and second plug 8 pulled down respectively again clear up, improved whole cleaning quality; It is poorly sealed to avoid residual rock core particle and foul to cause between plug and the gum cover, and causes the generation of fluid leakage phenomenon.
As a kind of improvement of the present invention; First plug 7 is for regulating plug, and this adjusting plug 7 comprises the first shaft-like plug body 71 and shackle 72, axially offers first vent port 77 and first inlet opening 78 that connects this first plug body 71 along the first plug body 71; On the first plug body 71, offer several draw-in grooves 73 vertically continuously; Shackle 72 is connected with the outside of axle pressure nut 11, and is connected with draw-in groove 73 buckles of regulating plug 7, links together removably through shackle 72 between axle pressure nut 11 and the adjusting plug 7 like this; Physical length size according to rock core 10 to be measured; Can adjust shackle 72 and match, reach and regulate the effect that the first plug body 71 stretches into the interior length of cavity of rubber sleeve 2, make the present invention can be used for measuring the rock core of different length with the draw-in groove 73 of diverse location; It is big to have range of adjustment, need not to install additional the advantage of cylinder cushion block.And, because the shackle 72 and the first plug body 71 connect and fix, after rock core detects completion, only need pull down shackle 72, can have the advantage of convenient disassembly with the first plug body 71 by extracting in the clamper.
Further, please refer to Fig. 2, be the structural representation of shackle of the present invention.As shown in Figure 2, shackle 72 is to be made up of C shape becket 74 and the spring 75 that connects the becket two ends.Spring 75 plays the effect of tension C shape becket 74, guarantees that further shackle 72 and the first plug body, 71 chuckings are fixing.
As a kind of optional embodiment of the present invention, as shown in Figure 3, be the structural representation of axle pressure nut of the present invention.Axle pressure nut 11 of the present invention comprises circular cap body 12; Side at cap body 12 convexes with cylindric junction surface 13 vertically; Opposite side at cap body 12 is provided with clamping part 14 vertically; Cylindric junction surface 13 is inserted between the outer wall of inwall and the first plug body 71 of axle pressure piston 92; The outer wall at cylindric junction surface 13 is connected with the inner thread of axle pressure piston 92, makes axle pressure nut 11 link together with axle pressure piston 92 and moves axially with axle pressure piston 92.Clamping part 14 is clasped with the groove 76 that the side of shackle 72 is offered; Make axle pressure nut 11 and shackle 72 link together; Axle pressure piston component 9 is passed to the first plug body 71 through the pressure that axle pressure nut 11 and shackle 72 will move axially generation like this, applies axial force by the first plug body 71 to rock core 10 to be measured again.
As a kind of optional embodiment of the present invention, as shown in Figure 1, adopt the fast-assembling interface structure between second plug 8 and second clamping cap 6.Specifically; Be provided with radial protrusion portion 81 at second plug 8; Second clamping cap 6 offer radial groove portion 61, the second plugs 8 through lug boss 81 and concave part 61 be clasped and said second clamping cap 6 links together removably, thereby realize the fast assembling-disassembling of second plug, 8 one sides.Second plug 8 is axially arranged with first fluid hole 82 that connects this second plug 8.When mounted; The front portion of second plug 8 is passed second set collar 4 and is inserted in the rubber sleeve 2; And be resisted against on rock core one end face; The lug boss 81 at its rear portion is the fast-assembling interface structure with this second clamping cap 6 each other, makes second clamping cap 6 and second plug 8 be fastened, and is spirally connected with the outer wall of clamper cylindrical shell 1.The quick fixation structure of second plug 8 has for convenience detach, and conserve space has reduced the dead volume of lower end fluid hole.
Further, as shown in Figure 1, on the outer wall of clamper cylindrical shell 1, offer the radial pressure inlet opening 15 and radial pressure vent port 16 that are connected with confined pressure space 18 respectively; Make pressure fluid to get in the confined pressure space 18 through radial pressure inlet opening 15; Expand in confined pressure space 18, rubber sleeve is pressurized radially, makes to produce radial pressure to rock core 10 to be measured; Gas can be discharged through radial pressure vent port 16 in the confined pressure space 18 simultaneously, is beneficial to confined pressure space 18 and expands.On the outer wall of axle pressure cylindrical shell 91, offer the axle pressure inlet opening 21 and axle pressure vent port 22 that are connected with axle pressure cylindrical shell 91 inside respectively; Making pressure fluid to enter to axle pressure cylindrical shell 91 inner also impeller-hubs through axle pressure inlet opening 21 radially moves to pressure piston; Axle pressure cylindrical shell 91 internal gas can be discharged through axle pressure vent port 22 simultaneously, apply axle pressure thereby realize driving first plug 7 to rock core 10 to be measured.
Further; As shown in Figure 1; First set collar 3 and second set collar 4 comprise pedestal 31,41 and frustum-like shape junction surface 32,42 respectively, and frustum-like shape junction surface 32,42 is provided with towards rubber sleeve 2, and are plugged in the both sides port of rubber sleeve respectively; The outer wall at frustum-like shape junction surface 32,42 and the inwall interference fit of rubber sleeve 2; Make the two-port of rubber sleeve 2 support effect lower edge radial dilatation at the frustum-like shape junction surface 32,42 of first set collar 3 and second set collar 4 like this, make the outer wall two ends of rubber sleeve 2 fit tightly with the inwall of clamper cylindrical shell 1 respectively, thereby guaranteed the sealing in confined pressure space 18.
Further, as shown in Figure 1, between the inwall of the pedestal 41 of the pedestal 31 of first set collar 3 and second set collar 4 and clamper cylindrical shell 1, be respectively equipped with O-ring seal 17, thereby further guarantee the sealing of structure.This first set collar 3 and second set collar 4 are the tubular becket; During installation; This first set collar 3 and second set collar 4 are installed with in clamper cylindrical shell 1; The pedestal 31,41 of first set collar 3 and second set collar 4 is all fitted with clamper cylindrical shell 1 barrel, and first set collar 3 and second set collar 4 and 1 of clamper cylindrical shell are provided with O-ring seal 17; Rubber sleeve 2 two ends are inserted at frustum-like shape junction surface 32,42 respectively, and rubber sleeve 2 two ends barrels are propped up by it to expand outwardly, and fit with clamper cylindrical shell 1 inwall, thereby between clamper cylindrical shell 1 inwall and rubber sleeve 2 outer walls, form airtight annular radial confined pressure space 18.
Further, the cavity of rubber sleeve 2 is the cylinder bodily form or cuboid or other suitable shape, to be applicable to difform rock core to be measured 10.In the present embodiment, the internal diameter of cavity is 2.5cm or 3.8cm, and the diameter of measured rock core is 2.5cm or 3.8cm, and length is 3~10cm.
In the present invention, axle pressure cylindrical shell 91 is a tubular structure, and side ring is established axle pressure piston 92 in it, is provided with two O-ring seals 19 between the two; This axle pressure cylindrical shell 91, axle pressure piston 92 and two 19 of O-ring seals form airtight ring shaped axial pressure room 20; This axle pressure cylindrical shell 91 is provided with axle pressure inlet opening 21 forcing pump of outside is connected with this axle pressure room 20; This axle pressure cylindrical shell 91 is provided with axle pressure vent port 22 and is communicated with this axle pressure room 20 and axle pressure cylindrical shell 91 outsides, discharges smoothly to guarantee the gas in the axle pressure room 20.Axle pressure of the present invention realizes through following process: at first; Forcing pump starts, and oil gets into axle pressure room 20 through axle pressure inlet opening 21, and axle pressure room 20 volumes enlarge impeller-hub and move towards first clamping cap, 6 directions vertically to pressure piston 92; And move to pressure nut 11 through spiral shell cingulum moving axis; Axle pressure nut 11 is fixed on first plug 7, moves to the rock core direction thereby drive first plug 7, thus rock core is applied axial confined pressure.
The present invention when mounted, the front portion of the first plug body 71 passes axle pressure cylindrical shell 91, first clamping cap 5 and first set collar 3 inserts in these rubber sleeves 2; The front end face of the first plug body 71 is resisted against on the side end face of rock core; Axle pressure nut 11 is sheathed on the first plug body, 71 outsides, and axle pressure nut 11 outside screw engage with these axle pressure piston 92 inside threads; Shackle 72 is fixed on axle pressure nut 11 on respective card slot 73 positions of the first plug body 71; Shackle 72 can combine with corresponding draw-in groove 73 according to the length dimension of rock core 10 to be measured, realizes that the first plug body 71 inserts the length adjustment function of section.It is 70MPa that the present invention designs the maximum radial confined pressure, and axially confined pressure is 70MPa, and the maximum 70MPa of hydrodynamic pressure can be widely used in rock porosity, permeability, relative permeability, rock compressibility, formation sensitivity evaluation experimental etc.
To the illustrated in detail of above-mentioned each embodiment, its purpose only is the present invention is made an explanation, so that can understand the present invention better; But; It is limitation of the present invention that these descriptions can not be construed to any reason, and particularly, each characteristic of in different embodiment, describing is combination in any each other also; Thereby form other embodiments; Except clear and definite opposite description is arranged, these characteristics should be understood that can be applied in any one embodiment, and also not only are confined to described embodiment.

Claims (9)

1. triaxial core holder; Comprise: the clamper cylindrical shell; In said clamper cylindrical shell, be provided with rubber sleeve vertically; Said rubber sleeve has the cavity that is used to hold rock core to be measured and axial perforation, is inserted with first set collar and second set collar respectively at the two-port place of said rubber sleeve, has certain interval between the outer wall of said rubber sleeve and the said clamper cylinder inboard wall and forms radially confined pressure space; Both end sides at said clamper cylindrical shell is threaded with first clamping cap and second clamping cap respectively; Said first clamping cap and second clamping cap respectively with the side of said first set collar and second set collar push up mutually to, it is characterized in that said clamper also comprises:
First plug and second plug; Said first plug and second plug run through said first clamping cap and second clamping cap respectively vertically by the outside of said clamper cylindrical shell; And stretch in the cavity of said rubber sleeve, and be resisted against the two side ends of said rock core to be measured respectively;
The axle pressure piston component; Be set on the outer wall of said first plug; Comprise the axle pressure cylindrical shell and the axle pressure piston that is movably installed in the said axle pressure cylindrical shell that are fixedly arranged on said first clamping cap outside; Said axle pressure piston bush is loaded on the outer wall of said first plug, and said axle pressure piston can endwisely slipping along said first plug
Said axle pressure piston is connected with said first plug through the axle pressure nut, and said first plug applies axle pressure through endwisely slipping of said axle pressure piston to said rock core to be measured;
Said first plug is connected with second clamping cap is removable with said first clamping cap respectively with second plug;
Said first plug is for regulating plug; Said adjusting plug comprises first shaft-like plug body and the shackle; On the said first plug body, offer several draw-in grooves vertically continuously; Said shackle is connected with the outside of said axle pressure nut, and is connected with the draw-in groove buckle of said adjusting plug.
2. triaxial core holder as claimed in claim 1 is characterized in that, said shackle is to be made up of C shape becket and the spring that connects said becket two ends.
3. triaxial core holder as claimed in claim 2; It is characterized in that; Said axle pressure nut comprises circular cap body; Side at said cap body convexes with cylindric junction surface vertically, is provided with clamping part vertically at the opposite side of said cap body, and said cylindric junction surface is inserted between the outer wall of inwall and the said first plug body of said axle pressure piston; The outer wall at said cylindric junction surface is connected with the inner thread of said axle pressure piston, and the groove that the side of said clamping part and said shackle is offered is clasped.
4. like claim 1 or 2 or 3 described triaxial core holders, it is characterized in that said second plug is provided with radial protrusion portion, said second clamping cap is offered radial groove portion, and said lug boss is connected with the buckle of said concave part.
5. triaxial core holder as claimed in claim 1 is characterized in that, on the outer wall of said clamper cylindrical shell, offers the radial pressure inlet opening and the radial pressure vent port that are connected with said confined pressure space respectively; On the outer wall of said axle pressure cylindrical shell, offer the axle pressure inlet opening and the axle pressure vent port that are connected with said axle pressure barrel respectively.
6. triaxial core holder as claimed in claim 1; It is characterized in that; Said first set collar and second set collar include pedestal and frustum-like shape junction surface; Said frustum-like shape junction surface protrudes out setting towards said rubber sleeve, and is plugged in the both sides port of said rubber sleeve respectively, the outer wall at said frustum-like shape junction surface and the inwall interference fit of said rubber sleeve.
7. triaxial core holder as claimed in claim 6 is characterized in that, between the inwall of the pedestal of the pedestal of said first set collar and second set collar and said clamper cylindrical shell, is respectively equipped with O-ring seal.
8. triaxial core holder as claimed in claim 1 is characterized in that, the cavity of said rubber sleeve is the cylinder bodily form or cuboid.
9. triaxial core holder as claimed in claim 1; It is characterized in that; To offering first vent port and first inlet opening that connects this first plug body, axially offer first fluid hole that connects this second plug along the said first plug body shaft along said second plug.
CN201210154416.XA 2012-05-17 2012-05-17 Three-axial rock core holding unit CN102707032B (en)

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Application Number Priority Date Filing Date Title
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CN102707032B CN102707032B (en) 2015-02-25

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Cited By (13)

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CN103940720A (en) * 2014-04-18 2014-07-23 西南石油大学 Ultrahigh pressure sealing core holder capable of pressurizing step by step
CN104777087A (en) * 2015-04-14 2015-07-15 海安县石油科研仪器有限公司 Core holding unit capable of applying axial pressure and radial pressure simultaneously
CN104792971A (en) * 2015-04-23 2015-07-22 中国石油天然气股份有限公司勘探开发研究院廊坊分院 Clamping system applied to rock cores in multiple specifications
CN104807958A (en) * 2015-04-02 2015-07-29 中国石油天然气股份有限公司 Triaxial self-positioning core holder
CN104914229A (en) * 2014-03-11 2015-09-16 中国石油化工集团公司 Multi-parameter high-temperature high-pressure major diameter rock core holder
CN105004762A (en) * 2015-07-06 2015-10-28 中国石油大学(北京) Core holding unit
CN105223122A (en) * 2015-10-30 2016-01-06 南通市飞宇石油科技开发有限公司 A kind of bolt-type core holding unit
CN105651613A (en) * 2015-12-29 2016-06-08 成都皓瀚完井岩电科技有限公司 Device for measuring radial deformation of rock sample
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
CN105954495A (en) * 2016-06-03 2016-09-21 中国石油大学(华东) Stratum core holder
CN107436279A (en) * 2016-05-27 2017-12-05 中国石油化工股份有限公司 The axle rock permeability evaluating apparatus of high temperature three
CN108181165A (en) * 2017-11-22 2018-06-19 中国石油天然气股份有限公司 Core holding unit
CN109856033A (en) * 2019-02-25 2019-06-07 中国地质大学(北京) A kind of adjustable core holding unit

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CN104914229A (en) * 2014-03-11 2015-09-16 中国石油化工集团公司 Multi-parameter high-temperature high-pressure major diameter rock core holder
CN103940720A (en) * 2014-04-18 2014-07-23 西南石油大学 Ultrahigh pressure sealing core holder capable of pressurizing step by step
CN104807958B (en) * 2015-04-02 2016-07-06 中国石油天然气股份有限公司 A kind of three axial self-align core holding units
CN104807958A (en) * 2015-04-02 2015-07-29 中国石油天然气股份有限公司 Triaxial self-positioning core holder
CN104777087A (en) * 2015-04-14 2015-07-15 海安县石油科研仪器有限公司 Core holding unit capable of applying axial pressure and radial pressure simultaneously
CN104792971A (en) * 2015-04-23 2015-07-22 中国石油天然气股份有限公司勘探开发研究院廊坊分院 Clamping system applied to rock cores in multiple specifications
CN104792971B (en) * 2015-04-23 2016-07-13 中国石油天然气股份有限公司勘探开发研究院廊坊分院 A kind of grasping system suitable in many specifications rock core
CN105004762A (en) * 2015-07-06 2015-10-28 中国石油大学(北京) Core holding unit
CN105223122A (en) * 2015-10-30 2016-01-06 南通市飞宇石油科技开发有限公司 A kind of bolt-type core holding unit
CN105223122B (en) * 2015-10-30 2019-06-21 南通市飞宇石油科技开发有限公司 A kind of bolt-type core holding unit
CN105651613A (en) * 2015-12-29 2016-06-08 成都皓瀚完井岩电科技有限公司 Device for measuring radial deformation of rock sample
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
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
CN107436279A (en) * 2016-05-27 2017-12-05 中国石油化工股份有限公司 The axle rock permeability evaluating apparatus of high temperature three
CN105954495A (en) * 2016-06-03 2016-09-21 中国石油大学(华东) Stratum core holder
CN108181165A (en) * 2017-11-22 2018-06-19 中国石油天然气股份有限公司 Core holding unit
CN109856033A (en) * 2019-02-25 2019-06-07 中国地质大学(北京) A kind of adjustable core holding unit
CN109856033B (en) * 2019-02-25 2020-05-19 中国地质大学(北京) Adjustable rock core holder

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