CN205861577U - Core holding unit - Google Patents
Core holding unit Download PDFInfo
- Publication number
- CN205861577U CN205861577U CN201620808130.2U CN201620808130U CN205861577U CN 205861577 U CN205861577 U CN 205861577U CN 201620808130 U CN201620808130 U CN 201620808130U CN 205861577 U CN205861577 U CN 205861577U
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- China
- Prior art keywords
- plug
- packing element
- confined pressure
- holding unit
- core holding
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- 238000012856 packing Methods 0.000 claims abstract description 102
- 229920006351 engineering plastic Polymers 0.000 claims abstract description 27
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 18
- 239000004917 carbon fiber Substances 0.000 claims abstract description 18
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical group C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000002184 metal Substances 0.000 claims abstract description 16
- 210000004907 gland Anatomy 0.000 claims abstract description 12
- 239000002131 composite material Substances 0.000 claims abstract description 6
- 239000011435 rock Substances 0.000 claims description 56
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 230000003746 surface roughness Effects 0.000 claims description 5
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Landscapes
- Pressure Vessels And Lids Thereof (AREA)
Abstract
This utility model relates to a kind of core holding unit for oil exploration and exploitation field.This utility model core holding unit includes confined pressure kettle, location plug, regulation plug, packing element assembly, space between described packing element assembly and described confined pressure kettle is formed with confined pressure chamber, described confined pressure kettle is carbon fiber metal engineering plastic composite material structure, described confined pressure kettle includes the metal structure fillet of screw being separately fixed at described confined pressure kettle two ends, it is laid on the shell of carbon fiber outside the described fillet of screw, liner with the engineering plastics that the inwall of described shell fits, described liner two ends abut described location plug and described regulation plug respectively, it is equipped with gland nut on described location plug and described regulation plug, described gland nut is fixedly connected on the described fillet of screw, and described gland nut is fixed described location plug and described regulation plug.Its purpose is to provide a kind of composite construction core holding unit being applicable to high temperature and high pressure environment.
Description
Technical field
This utility model relates to oil exploration and exploitation field, particularly relates to a kind of core holding unit.
Background technology
Rock is the main object of geological prospecting, by one or more mineral compositions, has a fixed structure structure
Aggregation.The structure of rock describes the change procedure of geology as painting and calligraphy, and the analysis to rock texture can confirm that geology becomes
Point, rock properties and characteristics and geological transformation process feature.
Core holding unit is a kind of clamping and seals rock core, completes core permeability, porosity test or various rock core and drives
For the special arrangement of experiment, its major function is to be put into wherein core sample to be measured or to be tested, and ensures to test fluid
During by core sample rear and front end, the side surface of rock sample can be completely sealed off.
CT core holding unit can be used for the pore structure of X-ray scanning column core sample, and research core parameters is with hole
Flowing pressure Changing Pattern, and two-dimensional section and three-dimensional structure can be carried out under conditions of not destroying sample interior
Reconstruct, quantitative nondestructive analysis sample.Realize being distributed along journey of real time on-line monitoring heterosphere each interval fluid saturation interior,
Also observe that crossflow phenomenon.
Existing core holding unit mainly includes gum cover, the plug of two ends, confined pressure kettle etc..Use core holding unit
Time, rock core to be put into inside gum cover, two ends plug is blocked, and entirety is put in confined pressure kettle.Process of the test passes through plug side
End in rock core, inject fluid, in confined pressure kettle, inject high-pressure fluid, the pressure outside confined pressure gum cover to be kept simultaneously
Higher than gum cover internal pressure, i.e. gum cover can be squeezed on rock core, it is ensured that injecting the fluid within gum cover can be in rock core
Portion passes through, and not along the gap seepage flow of chuck and rock core.
The confined pressure kettle of common core holding unit is metal material, but metal is strong to the absorbability of X-ray, and X penetrates
Absorbed during the confined pressure kettle of line penetrating metal, so the scanning poor effect to rock core.So current CT core holding unit
Confined pressure kettle major part be engineering plastics materials.Engineering plastics are the strongest to the absorbability of X-ray, so confined pressure kettle
Wall thickness can not be too big, which limits the use pressure of core holding unit, so the operating pressure of general CT core holding unit
Relatively low；Engineering plastics bearing capacity at high operating temperatures can reduce, so can not work at high operating temperatures；Due to engineering plastics
The bearing capacity of itself is relatively low, so the internal diameter of confined pressure kettle can not be too big, so being typically only applicable to analyze detection diameter 1 English
Very little following core sample.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of composite construction rock core being applicable to high temperature and high pressure environment
Clamper.
This utility model core holding unit, including confined pressure kettle, is positioned at location plug and the tune at described confined pressure kettle two ends
Joint plug, and in described confined pressure kettle and be fixed on the packing element group between described location plug and described regulation plug
Part, it is characterised in that: the space between described packing element assembly and described confined pressure kettle is formed with confined pressure chamber, and described confined pressure kettle is
Carbon fiber-metal-engineering plastic composite material structure, described confined pressure kettle includes being separately fixed at described confined pressure kettle two ends
The metal structure fillet of screw, it is laid on the shell of open column shape carbon fiber outside the described fillet of screw and the inwall phase of described shell
Laminating and two ends connect the liner of the described fillet of screw, and the material of described liner is engineering plastics, and described liner two ends abut respectively
It is equipped with gland nut, described pressure on described location plug and described regulation plug, described location plug and described regulation plug
Tight swivel nut is fixedly connected on the described fillet of screw, and described gland nut is fixed described location plug and described regulation is blocked up
Head.
This utility model core holding unit, wherein said packing element assembly includes the packing element of radially fixed rock core, respectively cutting ferrule
At fixing packing element positioning sleeve and the floating packing element positioning sleeve at described packing element two ends, it is described fixed that described fixing packing element positioning sleeve is connected to
Position plug in, described floating packing element positioning sleeve is connected in described regulation plug, described packing element assembly respectively with described positioning plug
Head connects with described regulation plug and is formed with packing element chamber.
This utility model core holding unit, wherein packing element intracavity is provided with injection plug and output plug, injects plug and product
Going out plug for clamping rock core, described injection plug is provided with filling tube, and described output plug is provided with discharge opening, described packing element
Be provided with regulating sleeve near described regulation plug side in assembly, described regulating sleeve one end abut described injection plug, another
End abutting has front end pre-load nut, described front end pre-load nut to be fixed on described regulation plug, and described regulating sleeve is provided with many
Plant size.
This utility model core holding unit, the lateral surface at wherein said floating packing element positioning sleeve two ends is set to cone structure,
Described fixing packing element positioning sleeve is provided with cone structure near packing element one end, and the other end is provided with thread segment, and described thread segment is connected to
On the plug of described location.
This utility model core holding unit, in wherein said packing element assembly, detection rock core length is in the range of 30-120mm,
Packing element radial dimension is 1 inch or 1.5 inches.
This utility model core holding unit, wherein said packing element is provided with pressure-measuring-point, and described pressure-measuring-point is provided with and takes
Pressure pipeline, the material of described pressure pipeline is engineering plastics.
This utility model core holding unit, wherein said confined pressure intracavity fills confined pressure liquid, described location plug and described tune
Joint plug is provided with heating rod, and the hot zone of described heating rod is immersed in described confined pressure liquid, and described heating rod individually regulates and controls.
This utility model core holding unit, wherein said regulation plug and described location plug and the contact surface of described liner
Being provided with anti-leak seal, the contact surface roughness of described anti-leak seal is 1.6.
This utility model core holding unit, the cylindrical of the wherein said fillet of screw is provided with locating slot and the radial direction of axial distribution
The fixing slot of distribution.
This utility model core holding unit, the inwall of the wherein said fillet of screw is threadeded with described gland nut.
This utility model core holding unit difference from prior art is: the confined pressure of this utility model core holding unit
Body material is carbon fiber-engineering plastics-metal composite structure, the shell of carbon fiber, the liner of engineering plastics and metal
The confined pressure kettle that the fillet of screw combines, the fillet of screw high temperature high voltage resistant ability of metal material is strong, and is positioned at the two of confined pressure kettle
End, disturbs little to the ray of CT scan process；The material of shell is carbon fiber, and carbon fiber is little to ray absorption capacity and 200
Stable performance within DEG C, improves the precision of result of the test；The material of liner is engineering plastics, the surface roughness of engineering plastics
Precision is high, and it is effective that liner seals confined pressure liquid, and enclosure material is carbon fiber, reduces the thickness of the liner of engineering plastics,
Weaken the engineering plastics interference to ray scanning effect, it is ensured that the accuracy of result of the test.
This utility model core holding unit difference from prior art also resides in: the glue of this utility model core holding unit
Into the barrel chamber is provided with regulating sleeve, the change of packing element intracavity rock core size, can control consolidating of rock core by increase and decrease regulating sleeve
Fixed, easy and simple to handle, simple in construction.
This utility model core holding unit difference from prior art also resides in: determining of this utility model core holding unit
Position plug and regulation plug are provided with heating rod, and heating rod directly heats the confined pressure liquid of confined pressure intracavity, reduce temperature diffusion, add
Thermal effect is good, and the keying of heating rod individually controls, convenient regulation hot spot and the temperature of control confined pressure liquid.
Below in conjunction with the accompanying drawings core holding unit of the present utility model is described further.
Accompanying drawing explanation
Fig. 1 is the overall structure sectional view of this utility model core holding unit；
Fig. 2 is that the A of this utility model core holding unit Fig. 1 is to structural representation；
Fig. 3 is B-B structural representation in this utility model core holding unit Fig. 2；
Fig. 4 is the confined pressure kettle structure schematic diagram of this utility model core holding unit；
Fig. 5 is the packing element assembly within this utility model core holding unit and accessory structure schematic diagram thereof；
Fig. 6 is C-C structure sectional view in this utility model core holding unit Fig. 2.
Accompanying drawing marks: 1, confined pressure kettle；11, liner；12, shell；13, the fillet of screw；14, seat is supported；15, confined pressure chamber；2、
Packing element assembly；21, packing element；22, floating packing element positioning sleeve；23, fixing packing element positioning sleeve；24, regulating sleeve；25, pre-load nut；
26, sealing member；27, location nut；3, rock core；31, output plug；311, discharge opening；32, plug is injected；321, filling tube；
33, pressure-measuring-point；34, pressure pipeline；4, regulation plug；41, exhaustor；42, liquid injection pipe；5, location plug；51, heating rod；
52, metal pipe line cutting ferrule；521, metal pipe line；53, anti-leak seal；54, temperature sensor；55, pressure transmission hole；56, pipeline card
Set；6, gland nut.
Detailed description of the invention
As shown in Figure 1 and Figure 4, this utility model core holding unit, mainly include columnar confined pressure kettle 1, fixing
Supportting the support seat 14 at confined pressure kettle 1 outer wall, confined pressure kettle 1 includes shell 12, liner 11 and the fillet of screw 13, confined pressure kettle 1
Two ends are respectively fixedly connected with regulation plug 4 and location plug 5, the female thread of the fillet of screw 13 and gland nut 6 on confined pressure kettle 1
External screw thread connects, and the inner ring of gland nut 6 is fixed regulation plug 4 and location plug 5, regulation plug 4 and location plug 5
It is separately fixed at the two ends of confined pressure kettle 1.
The sealing of regulation plug 4 and location plug 5 and confined pressure kettle 1 mainly by anti-leak seal 53, regulation plug 4 and fixed
Being equipped with seal groove on the plug 5 of position, fix anti-leak seal 53 in seal groove, anti-leak seal 53 selects O RunddichtringO, O type
The material selection fluorubber of sealing ring, fluorubber will not occur character to change in 180 DEG C, and high temperature high voltage resistant ability is strong, makes rock
Heart clamp holder can carry out test with pressure under the conditions of 180 DEG C, improves the safety coefficient of core holding unit, it is ensured that process of the test is pacified
Complete stable.
Confined pressure kettle 1 is carbon fiber-engineering plastics-metal material composite construction, and confined pressure kettle 1 includes being separately fixed at and encloses
The metal structure fillet of screw 13 at pressure kettle 1 two ends, it is laid on the shell 12 of open column shape carbon fiber outside the fillet of screw 13 and outer
The inwall of shell 12 fits and the liner 11 of the two ends connection fillet of screw 13, and the material of liner 11 is engineering plastics.
The shell 12 of carbon fiber is to be directly overlayed the fillet of screw 13 and liner 11 by the mixture of carbon fiber and potting resin
Outer surface process.Carbon fibre material have high temperature resistant, intensity is high, without creep, good corrosion resistance, X-ray transparent is good
Etc. feature, it is possible to adapt to core holding unit and work at high temperature under high pressure, and clearly can observe under the conditions of X-ray scanning
The pore structure of the rock core 3 within kettle.
The material selection rustless steel of the fillet of screw 13, rustless steel intensity hardness good combination property, high temperature high voltage resistant ability are strong；And
The fillet of screw 13 is positioned at the two ends of confined pressure kettle 1, disturbs little to the ray of CT scan process；The material of shell 12 is carbon fiber, carbon
Fiber is little to ray absorption capacity and stable performance within 200 DEG C, improves the precision of result of the test；The material of liner 11 is
Engineering plastics, the surface roughness precision of engineering plastics is high, and liner 11 seals the effective of confined pressure liquid, and shell 12 material is
Carbon fiber, reduces the thickness of the liner 11 of engineering plastics, weakens the engineering plastics interference to ray scanning effect, it is ensured that
The accuracy of result of the test.
The cylindrical of the fillet of screw 13 is provided with the locating slot of axial distribution, and locating slot is wave-shaped trench, and wave-shaped trench is real
Show axial location, improve the axial bonding strength of the fillet of screw 13 and carbon fiber；It is perpendicular to wave-shaped trench and is provided with annular point
The fixing slot of the strip of cloth, fixing slot improves the radially connected intensity of the fillet of screw 13 and carbon fiber, prevents the fillet of screw 13 turns
Dynamic.The fillet of screw 13 of metal structure can bear bigger pulling force and moment of torsion, it is ensured that the connection between the fillet of screw 13 and shell 12
Intensity, the structure of the fillet of screw 13 ensure that when core holding unit works under elevated pressure conditions, and the fillet of screw 13 can be with carbon fiber
Shell 12 compact siro spinning technology, will not occur relatively to slide.
Anti-leak seal 53 sealing function to be realized requirement anti-leak seal 53 with the contact surface roughness of liner 11 is
1.6, the roughness of carbon fibre material is extremely difficult to this machining accuracy, and the face seal of engineering plastics is effective, so rock core
Clamper is provided with the liner 11 of engineering plastics, and liner 11 major function of engineering plastics is to realize sealing, suffered by liner 11
Internal pressure relies on the carbon fiber skin 12 of outer layer to balance, it is ensured that while requirement of strength, reduce the thickness of confined pressure kettle 1
Degree.
As shown in Figure 1 and Figure 5, packing element assembly 2 includes the packing element 21 of radially fixed rock core 3, is fastened in packing element 21 liang respectively
The fixing packing element positioning sleeve 23 of end and floating packing element positioning sleeve 22, fixing packing element positioning sleeve 23 is connected to position in plug 5, floats
Packing element positioning sleeve 22 is connected to regulate in plug 4, and packing element assembly 2 connects formation packing element with location plug 5 and regulation plug 4 respectively
Chamber.Packing element intracavity fixes rock core, and rock core 3 two ends have abutted injection plug 32 and output plug 31 respectively, injects and sets on plug 32
There are filling tube 321, output plug 31 to be provided with discharge opening 311, in packing element assembly 2, are provided with regulation set near regulation plug 4 side
Cylinder 24, regulating sleeve 24 one end abuts injection plug 32, other end abutting has pre-load nut 25, pre-load nut 25 to be fixed on regulation
On plug 4, the dimension adjustable of regulating sleeve 24, it is fixed with location nut 27 in the plug 5 of location.
In process of the test, first location plug 5 and regulation plug 4 are arranged on confined pressure kettle 1, then output plug 31 is pacified
It is contained in the plug 5 of location, and fixes with location nut 27.Fill in rock core 3 successively from regulation plug 4 one end, inject plug 32 and
Regulating sleeve 24, regulating sleeve 24 chooses according to rock core 3 length, then locks with pre-load nut 25, and rock core 3 installs.
The two ends of rock core 3 are fixed by injection plug 32 and output plug 31 respectively, and injecting to connect on plug 32 has filling tube
321, filling tube 321 injects fluid to rock core 3, and fluid can be gas or liquid, is come by the state of fluid flowing in rock core 3
Indicating the structural parameters of rock core 3, fluid is flowed out by rock core 3 tailing edge discharge opening 311.Meanwhile, packing element assembly 2 and confined pressure still
Space between body 1 is formed with confined pressure chamber 15, and the liquid injection pipe 42 along regulation plug 4 injects confined pressure liquid in confined pressure chamber 15, encloses
Air in pressure chamber 15 is discharged by exhaustor 41, and the pressure preventing air from affecting in confined pressure chamber 15 in accumulating in confined pressure chamber 15 divides
Cloth；The pressure of the confined pressure liquid outside packing element 21 is higher than the internal pressure of packing element 21, it is ensured that packing element 21 can be squeezed on rock core 3,
Ensure that injecting the fluid within packing element 21 can pass through from rock core 3 inside, and not along the gap seepage flow of packing element 21 and rock core 3.
Location plug 5 is identical with regulation plug 4 structure, and liquid injection pipe 42 and exhaustor 41 can also be arranged on the plug 5 of location.
Packing element 21 selects fluorubber material, and high temperature high voltage resistant ability is strong, little to ray scanning interference；And fluorubber material
Under the high pressure effect of confined pressure liquid, the contact surface of packing element 21 with rock core 3 is compressed, reduces the gap between rock core 3 and packing element 21,
Prevent detection process from percolation phenomenon occurring, improve accuracy of detection.Packing element 21 is provided with pressure-measuring-point 33, and pressure-measuring-point 33 is positioned at glue
Cylinder 21 and the contact surface of rock core 3, measure the pressure on rock core 3 surface, and pressure-measuring-point 33 is provided with pressure pipeline 34, pressure pipeline 34
Material be engineering plastics, engineering plastics can reduce interference during ray scanning；Location plug 5 is near the side in confined pressure chamber 15
Being provided with pipeline cutting ferrule 56, and position plug 5 and be provided with the pressure transmission hole 55 coaxial with pipeline cutting ferrule 56, pressure pipeline 34 extends to
In pipeline cutting ferrule 56, pipeline cutting ferrule 56 supports and fixes pressure pipeline 34, and pressure pipeline 34 is by pipeline cutting ferrule 56 and pressure transmission hole
55 connections；The outside of location plug 5 connects has metal pipe line 521, metal pipe line 521 to connect with pressure transmission hole 55, on the plug 5 of location
Being provided with the metal pipe line cutting ferrule 52 of fixing metal pipe line 521, metal pipe line 521 connects pressure transducer, pressure transducer
Carry out the measurement of pressure, convenient pressure in packing element 21 is monitored, it is ensured that test parameters accurate.
The two ends of packing element 21 cutting ferrule respectively fixes packing element positioning sleeve 23 and floating packing element positioning sleeve 22, fixing packing element positioning sleeve
23 are connected to position in plug 5, and floating packing element positioning sleeve 22 is connected to regulate in plug 4, packing element assembly 2 respectively with location plug
5 connect formation packing element chamber with regulation plug 4.The end of floating packing element positioning sleeve 22 and fixing packing element positioning sleeve 23 is designed with circular cone
Face, taper seat inserts packing element 21 inside and carries out axial limiting.Fixing packing element positioning sleeve 23 other end has thread segment, thread segment to tighten
On the plug 5 of location, floating packing element positioning sleeve 22 other end is inserted directly in regulation plug 4.At regulation plug 4, location plug 5
In the case of position is fixing, packing element 21 has been carried out axially by floating packing element positioning sleeve 22 and the fixing packing element positioning sleeve 23 at two ends
Location.
Floating packing element positioning sleeve 22 is easy to the fixed and positioned of packing element 21 for biconical surface structure.When packing element 21 is installed, first will
Fixing packing element positioning sleeve 23 is threadeded with location plug 5, and then packing element 21 is fixed on the circular cone of fixing packing element positioning sleeve 23
On face, the taper seat clamping of packing element 21 other end and floating packing element positioning sleeve 22, then installation is partially loaded confined pressure
Kettle 1, and regulation plug 4 is installed, then with gland nut 6, regulation plug 4 is held out against；Taper seat on floating packing element positioning sleeve 22
Structure can guide packing element assembly 2 to enter regulation plug 4, it is ensured that the installation location of packing element assembly 2 the most accurately, is shortened equipment and installed
Time, improve test efficiency.
It is equipped with sealing member 26, the material selection of sealing member 26 on floating packing element positioning sleeve 22 and fixing packing element positioning sleeve 23
Fluorubber, the sealing effectiveness in sealing member 26 energy contact-enhancing face, it is ensured that sealing property in confined pressure chamber 15, prevent confined pressure liquid from revealing.
Packing element assembly 2 detects rock core 3 length in the range of 30-120mm, and the radial dimension of packing element 21 is 1 inch or 1.5 English
Very little.Rock core 3 is diameter 1 inch or the cylindrical-shaped structure of 1.5 inches through pre-treatment, and the length range of rock core 3 is 30-120mm.
Injecting plug 32 one end and abut fixing rock core 3, the other end abuts regulating sleeve 24, and the other end of regulating sleeve 24 abuts pretension spiral shell
Female 25, pre-load nut 25 is threaded in regulation plug 4, plays axially location regulating sleeve 24 and the effect of packing element assembly 2.
The length of regulating sleeve 24 has tri-kinds of specifications of 40mm, 60mm, 80mm, can select according to the length of rock core 3 and suitably regulate set
Cylinder 24, the regulating sleeve 24 of plurality of specifications can make core holding unit be applicable to the rock core 3 of larger lengths scope, expands equipment
Detection range.The radial dimension of packing element 21 is 1 inch or 1.5 inches, and the rock core 3 of different size can detect different parameters,
Expand the detection range of rock core 3.
After having tested, the pressure within confined pressure of releasing chamber 15 and packing element 21, dismantle the pretension spiral shell of confined pressure kettle 1 successively
Mother 25, location nut 27, injection plug 32, output plug 31 and regulating sleeve 24, the center of packing element assembly 2 is 1 inch
Or the cylindrical hole of 1.5 inches, rock core 3 can be poured out from any one end or release by thin bar, then adds new from any one end
Rock core 3, change during rock core 3, confined pressure in confined pressure chamber 15 is liquid-tight be enclosed in confined pressure chamber 15 in will not flow out, so changing
The safe operation process of rock core 3 is convenient.
As shown in Figures 2 and 3, location plug 5 and regulation plug 4 are provided with heating rod 51, and heating rod 51 is set to four 50
Watt electrically heated rod, four electrically heated rods are respectively mounted two on regulation plug 4 and location plug 5.The heating of electrically heated rod
District is in end；The hot zone of heating rod 51 is immersed in confined pressure liquid, uses safety.The control system of core holding unit is to four electricity
Heating rod independently controls, and can need to select multiple power to heat according to difference.
As shown in Figure 2 and Figure 6, location plug 5 is provided with temperature sensor 54, and temperature sensor 54 can detect confined pressure liquid
Temperature, conveniently carry out real-time monitoring, prevent that confined pressure liquid temp is abnormal not to be reached test effect or accident occur, can not only monitor
Test carries out effect, moreover it is possible to guarantee test safety.
Embodiment described above is only to be described preferred implementation of the present utility model, not to this practicality
Novel scope is defined, and on the premise of without departing from this utility model design spirit, those of ordinary skill in the art are to this
Various deformation that the technical scheme of utility model is made and improvement, all should fall into the protection that this utility model claims determine
In the range of.
Claims (10)
1. a core holding unit, including confined pressure kettle (1), is positioned at the location plug (5) at described confined pressure kettle (1) two ends and adjusts
Joint plug (4), and be positioned at described confined pressure kettle (1) and be fixed on described location plug (5) and described regulation plug (4) it
Between packing element assembly (2), it is characterised in that: the space between described packing element assembly (2) and described confined pressure kettle (1) is formed encloses
Pressure chamber (15), described confined pressure kettle (1) is carbon fiber-metal-engineering plastic composite material structure, and described confined pressure kettle (1) is wrapped
Include and be separately fixed at the metal structure fillet of screw (13) at described confined pressure kettle (1) two ends, be laid on the described fillet of screw (13) outside
The shell (12) of carbon fiber fit with the inwall of described shell (12) and two ends are connected the liner of the described fillet of screw (13)
(11), the material of described liner (11) is engineering plastics, and described liner (11) two ends abut described location plug (5) and institute respectively
State regulation plug (4), described location plug (5) and described regulation plug (4) are equipped with gland nut (6), described compression spiral shell
Set (6) be fixedly connected on the described fillet of screw (13), and described gland nut (6) be fixed described location plug (5) and
Described regulation plug (4).
Core holding unit the most according to claim 1, it is characterised in that: described packing element assembly (2) includes radially fixed rock
The packing element (21) of the heart (3), the fixing packing element positioning sleeve (23) being fastened in described packing element (21) two ends respectively and floating packing element location
Set (22), described fixing packing element positioning sleeve (23) is connected in described location plug (5), and described floating packing element positioning sleeve (22) is blocked
Being connected in described regulation plug (4), described packing element assembly (2) connects with described location plug (5) and described regulation plug (4) respectively
Lead to and be formed with packing element chamber.
Core holding unit the most according to claim 2, it is characterised in that: described packing element intracavity be provided with injection plug (32) and
Output plug (31), described injection plug (32) and described output plug (31) are used for clamping rock core (3), described injection plug
(32) being provided with filling tube (321), described output plug (31) is provided with discharge opening (311), close in described packing element assembly (2)
Described regulation plug (4) side is provided with regulating sleeve (24), described regulating sleeve (24) one end abut described injection plug (32),
The other end abuts has pre-load nut (25), described pre-load nut (25) to be fixed on described regulation plug (4), described regulating sleeve
(24) it is provided with sizes.
Core holding unit the most according to claim 2, it is characterised in that: outside described floating packing element positioning sleeve (22) two ends
Side is set to cone structure, and described fixing packing element positioning sleeve (23) is provided with cone structure near packing element (21) one end, and the other end sets
Thread segment, described thread segment is had to be connected on described location plug (5).
5. according to the core holding unit described in claim 1,2,3 or 4, it is characterised in that: the interior rock core of described packing element assembly (2)
(3) length is in the range of 30-120mm, and packing element (21) radial dimension is 1 inch or 1.5 inches.
6. according to the core holding unit described in claim 2,3 or 4, it is characterised in that: described packing element (21) is provided with pressure and surveys
Point (33), described pressure-measuring-point (33) is provided with pressure pipeline (34), and the material of described pressure pipeline (34) is engineering plastics.
Core holding unit the most according to claim 1, it is characterised in that: fill confined pressure liquid, institute in described confined pressure chamber (15)
Stating location plug (5) and described regulation plug (4) is provided with heating rod (51), the hot zone of described heating rod (51) is immersed in institute
Stating in confined pressure liquid, described heating rod (51) individually regulates and controls.
Core holding unit the most according to claim 1, it is characterised in that: described regulation plug (4) and described location plug
(5) contact surface with described liner (11) is provided with anti-leak seal (53), the contact surface roughness of described anti-leak seal (53)
It is 1.6.
Core holding unit the most according to claim 1, it is characterised in that: the cylindrical of the described fillet of screw (13) is provided with axially
The locating slot of distribution and radially-arranged fixing slot.
Core holding unit the most according to claim 1, it is characterised in that: the inwall of the described fillet of screw (13) and described pressure
Tight swivel nut (6) is threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620808130.2U CN205861577U (en) | 2016-07-28 | 2016-07-28 | Core holding unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620808130.2U CN205861577U (en) | 2016-07-28 | 2016-07-28 | Core holding unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205861577U true CN205861577U (en) | 2017-01-04 |
Family
ID=57653869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620808130.2U Expired - Fee Related CN205861577U (en) | 2016-07-28 | 2016-07-28 | Core holding unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205861577U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105973919A (en) * | 2016-07-28 | 2016-09-28 | 北京瑞莱博石油技术有限公司 | Core holding unit |
| CN108663300A (en) * | 2018-05-07 | 2018-10-16 | 西安石油大学 | Hyposmosis tight sand experimental provision |
| CN110208082A (en) * | 2019-06-18 | 2019-09-06 | 上海岩间机电科技有限公司 | It is a kind of to be able to achieve big axial load and the core holding unit of lightweight and high rigidity |
-
2016
- 2016-07-28 CN CN201620808130.2U patent/CN205861577U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105973919A (en) * | 2016-07-28 | 2016-09-28 | 北京瑞莱博石油技术有限公司 | Core holding unit |
| CN105973919B (en) * | 2016-07-28 | 2019-07-12 | 北京瑞莱博石油技术有限公司 | Core holding unit |
| CN108663300A (en) * | 2018-05-07 | 2018-10-16 | 西安石油大学 | Hyposmosis tight sand experimental provision |
| CN110208082A (en) * | 2019-06-18 | 2019-09-06 | 上海岩间机电科技有限公司 | It is a kind of to be able to achieve big axial load and the core holding unit of lightweight and high rigidity |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170104 |