CN105973919A - Core holding unit - Google Patents
Core holding unit Download PDFInfo
- Publication number
- CN105973919A CN105973919A CN201610607304.3A CN201610607304A CN105973919A CN 105973919 A CN105973919 A CN 105973919A CN 201610607304 A CN201610607304 A CN 201610607304A CN 105973919 A CN105973919 A CN 105973919A
- Authority
- CN
- China
- Prior art keywords
- plug
- packing element
- holding unit
- core holding
- confined pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229920006351 engineering plastic Polymers 0.000 claims abstract description 27
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 17
- 239000004917 carbon fiber Substances 0.000 claims abstract description 17
- 239000002184 metal Substances 0.000 claims abstract description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 7
- 239000002131 composite material Substances 0.000 claims abstract description 6
- 238000012856 packing Methods 0.000 claims description 99
- 239000011435 rock Substances 0.000 claims description 54
- 239000000463 material Substances 0.000 claims description 20
- 230000001105 regulatory effect Effects 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 19
- 238000007667 floating Methods 0.000 claims description 18
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 14
- 238000002347 injection Methods 0.000 claims description 13
- 239000007924 injection Substances 0.000 claims description 13
- 210000004907 gland Anatomy 0.000 claims description 12
- 230000036316 preload Effects 0.000 claims description 10
- 238000009826 distribution Methods 0.000 claims description 4
- 208000031481 Pathologic Constriction Diseases 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 210000001215 vagina Anatomy 0.000 claims description 3
- 238000002386 leaching Methods 0.000 claims 1
- 238000012360 testing method Methods 0.000 description 16
- 238000007789 sealing Methods 0.000 description 10
- 239000012530 fluid Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 238000005520 cutting process Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000001514 detection method Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 230000003746 surface roughness Effects 0.000 description 4
- 239000007769 metal material Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000002591 computed tomography Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 241000168254 Siro Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002905 metal composite material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000005325 percolation Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/06—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption
- G01N23/083—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption the radiation being X-rays
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
Landscapes
- Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Biochemistry (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to a core holding unit used for the field of oil-gas exploration and development. The core holding unit comprises a confining pressure kettle, a positioning plug, an adjusting plug and a rubber sleeve assembly. A confining pressure cavity is formed in space between the rubber sleeve assembly and the confining pressure kettle. The confining pressure kettle is of a carbon fiber-metal-engineering plastic composite structure. The confining pressure kettle comprises metal structure thread rings fixed to the two ends of the confining pressure kettle respectively, a shell laid on carbon fibers on the outer sides of the thread rings, and an engineering plastic lining attached to the inner wall of the shell. The two ends of the lining abut against the positioning plug and the adjusting plug respectively, the positioning plug and the adjusting plug are each provided with a pressing barrel, the pressing barrels are fixedly connected to the thread rings, and the pressing barrels press and fix the positioning plug and the adjusting plug. The core holding unit of a composite structure is suitable for high-temperature and high-pressure environments.
Description
Technical field
The present invention relates to oil exploration and exploitation field, particularly relate to a kind of core holding unit.
Background technology
Rock is the main object of geological prospecting, by one or more mineral compositions, has the aggregation of a fixed structure structure.
The structure of rock describes the change procedure of geology as painting and calligraphy, and the analysis to rock texture can confirm that geology composition, rock
Shape feature 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 displacement test
Special arrangement, its major function is to be put into wherein core sample to be measured or to be tested, and ensure test fluid pass through rock core
During 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 stream pressure
Power Changing Pattern, and two-dimensional section and three-dimensional structural remodeling can be carried out under conditions of not destroying sample interior,
Quantitatively nondestructive analysis sample.Realize being distributed along journey of real time on-line monitoring heterosphere each interval fluid saturation interior, it is possible to see
Observe crossflow phenomenon.
Existing core holding unit mainly includes gum cover, the plug of two ends, confined pressure kettle etc..When using core holding unit,
Being put into by rock core inside gum cover, two ends plug is blocked, and entirety is put in confined pressure kettle.The process of the test end by plug side
Fluid is injected in portion in rock core, injects high-pressure fluid in confined pressure kettle simultaneously, and the pressure outside confined pressure gum cover to be kept is higher than glue
Set internal pressure, i.e. can be squeezed in gum cover on rock core, it is ensured that injecting the fluid within gum cover can pass through inside rock core,
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-ray is worn
Absorbed during the confined pressure kettle of saturating metal, so the scanning poor effect to rock core.So the enclosing of current CT core holding unit
Pressure kettle major part is engineering plastics materials.Engineering plastics are the strongest to the absorbability of X-ray, so the wall thickness of confined pressure kettle
Can not be too big, which limits the use pressure of core holding unit, so the operating pressure of general CT core holding unit is relatively low；
Engineering plastics bearing capacity at high operating temperatures can reduce, so can not work at high operating temperatures；Due to engineering plastics itself
Bearing capacity 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 less than 1 inch
Core sample.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of composite construction core holding unit being applicable to high temperature and high pressure environment.
Core holding unit of the present invention, including confined pressure kettle, is positioned at location plug and the regulation plug at described confined pressure kettle two ends, with
And in described confined pressure kettle and be fixed on the packing element assembly between described location plug and described regulation plug, it is characterised in that:
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 structure, described confined pressure kettle includes being separately fixed at the metal structure fillet of screw at described confined pressure kettle two ends, paving
It is located at the shell of the open column shape carbon fiber outside the described fillet of screw to fit with the inwall of described shell and two ends are connected described spiral shell
The liner of stricture of vagina circle, the material of described liner is engineering plastics, and described liner two ends abut described location plug and described regulation respectively
Being equipped with gland nut on plug, described location plug and described regulation plug, described gland nut is fixedly connected on described screw thread
On circle, and described gland nut is fixed described location plug and described regulation plug.
Core holding unit of the present invention, wherein said packing element assembly includes the packing element of radially fixed rock core, is fastened in described packing element respectively
The fixing packing element positioning sleeve at two ends and floating packing element positioning sleeve, described fixing packing element positioning sleeve is connected in the plug of described location, institute
Stating floating packing element positioning sleeve to be connected in described regulation plug, described packing element assembly blocks up with described location plug and described regulation respectively
Head connection is formed with packing element chamber.
Core holding unit of the present invention, wherein packing element intracavity is provided with injection plug and output plug, injects plug and output plug is used for
Clamping rock core, described injection plug is provided with filling tube, and described output plug is provided with discharge opening, close in described packing element assembly
Described regulation plug side is provided with regulating sleeve, and described regulating sleeve one end abuts described injection plug, other end abutting has front end
Pre-load nut, described front end pre-load nut is fixed on described regulation plug, and described regulating sleeve is provided with sizes.
Core holding unit of the present invention, the lateral surface at wherein said floating packing element positioning sleeve two ends is set to cone structure, described fixing glue
Cylinder 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 described location plug
On.
Core holding unit of the present invention, in wherein said packing element assembly, detection rock core length is in the range of 30-120mm, and packing element is radially
A size of 1 inch or 1.5 inches.
Core holding unit of the present invention, wherein said packing element is provided with pressure-measuring-point, and described pressure-measuring-point is provided with pressure pipeline, institute
The material stating pressure pipeline is engineering plastics.
Core holding unit of the present invention, wherein said confined pressure intracavity is filled confined pressure liquid, described location plug and described regulation plug is set
Having heating rod, the hot zone of described heating rod to be immersed in described confined pressure liquid, described heating rod individually regulates and controls.
It is close that core holding unit of the present invention, wherein said regulation plug and described location plug and the contact surface of described liner are provided with leakproof
Sealing, the contact surface roughness of described anti-leak seal is 1.6.
Core holding unit of the present invention, the cylindrical of the wherein said fillet of screw is provided with the locating slot of axial distribution and radially-arranged fixing
Groove.
Core holding unit of the present invention, the inwall of the wherein said fillet of screw is threadeded with described gland nut.
Core holding unit difference from prior art of the present invention is: the confined pressure body material of core holding unit of the present invention is that carbon is fine
Dimension-engineering plastics-metal composite structure, the fillet of screw of the shell of carbon fiber, the liner of engineering plastics and metal combines
Confined pressure kettle, the fillet of screw high temperature high voltage resistant ability of metal material is strong, and is positioned at the two ends of confined pressure kettle, to CT scan process
Ray interference little；The material of shell is carbon fiber, and carbon fiber is little to ray absorption capacity and stable performance within 200 DEG C,
Improve the precision of result of the test；The material of liner is engineering plastics, and the surface roughness precision of engineering plastics is high, and liner seals
Confined pressure liquid is effective, and enclosure material is carbon fiber, reduces the thickness of the liner of engineering plastics, weakens engineering plastics pair
The interference of ray scanning effect, it is ensured that the accuracy of result of the test.
Core holding unit difference from prior art of the present invention also resides in: the packing element intracavity of core holding unit of the present invention is provided with regulation
Sleeve, the change of packing element intracavity rock core size, the fixing of rock core, easy and simple to handle, knot can be controlled by increase and decrease regulating sleeve
Structure is simple.
Core holding unit difference from prior art of the present invention also resides in: the location plug of core holding unit of the present invention and regulation are stifled
Head be provided with heating rod, heating rod directly heats the confined pressure liquid of confined pressure intracavity, reduce temperature diffusion, heats 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 the core holding unit of the present invention is described further.
Accompanying drawing explanation
Fig. 1 is the overall structure sectional view of core holding unit of the present invention；
Fig. 2 is that the A of core holding unit Fig. 1 of the present invention is to structural representation；
Fig. 3 is B-B structural representation in core holding unit Fig. 2 of the present invention；
Fig. 4 is the confined pressure kettle structure schematic diagram of core holding unit of the present invention；
Fig. 5 is the packing element assembly within core holding unit of the present invention and accessory structure schematic diagram thereof；
Fig. 6 is C-C structure sectional view in core holding unit Fig. 2 of the present invention.
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、
Inject plug；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 cutting ferrule；6, gland nut.
Detailed description of the invention
As shown in Figure 1 and Figure 4, core holding unit of the present invention, mainly include columnar confined pressure kettle 1, be fixedly supported on and enclose
The support seat 14 of pressure kettle 1 outer wall, confined pressure kettle 1 includes shell 12, liner 11 and the fillet of screw 13, the two of confined pressure kettle 1
End is 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 positioning plug
5 two ends being separately fixed at confined pressure kettle 1.
The sealing of regulation plug 4 and location plug 5 and confined pressure kettle 1 is mainly by anti-leak seal 53, regulation plug 4 and location
Being equipped with seal groove on plug 5, fix anti-leak seal 53 in seal groove, anti-leak seal 53 selects O RunddichtringO, O
The material selection fluorubber of RunddichtringO, fluorubber will not occur character to change in 180 DEG C, and high temperature high voltage resistant ability is strong, makes
Core holding unit 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
Safety and stability.
Confined pressure kettle 1 is carbon fiber-engineering plastics-metal material composite construction, and confined pressure kettle 1 includes being separately fixed at confined pressure still
The metal structure fillet of screw 13 at body 1 two ends, the shell 12 being laid on open column shape carbon fiber outside the fillet of screw 13 and shell
The inwall of 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 outside the fillet of screw 13 and liner 11 by the mixture of carbon fiber and potting resin
Surface Machining forms.Carbon fibre material have high temperature resistant, intensity is high, without creep, good corrosion resistance, X-ray transparent is good
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 spiral shell
Stricture of vagina circle 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
Matter is engineering plastics, and 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,
Ensure 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 achieves
Axially location, improves 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 spread
The fixing slot of strip, fixing slot improves the radially connected intensity of the fillet of screw 13 and carbon fiber, prevents the fillet of screw 13 from rotating.
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 is strong
Degree, 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 is 1.6 with the contact surface roughness of liner 11, carbon
The roughness of fibrous material is extremely difficult to this machining accuracy, and the face seal of engineering plastics is effective, so core holding unit sets
Having the liner 11 of engineering plastics, liner 11 major function of engineering plastics is to realize sealing, the internal pressure suffered by liner 11
The carbon fiber skin 12 relying on outer layer balances, it is ensured that while requirement of strength, reduce the thickness of confined pressure kettle 1.
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, floating
Dynamic packing element positioning sleeve 22 is connected to regulate in plug 4, and packing element assembly 2 connects shape with location plug 5 and regulation plug 4 respectively
Plastic barrel chamber.Packing element intracavity fixes rock core, and rock core 3 two ends have abutted injection plug 32 and output plug 31 respectively, injects stifled
32 are provided with filling tube 321, and output plug 31 is provided with discharge opening 311, near regulation plug 4 one in packing element assembly 2
Side is provided with regulating sleeve 24, and regulating sleeve 24 one end abuts injection plug 32, other end abutting has pre-load nut 25, pretension
Nut 25 is fixed on regulation plug 4, and the dimension adjustable of regulating sleeve 24 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 is chosen according to rock core 3 length, then is locked with pre-load nut 25, rock core 3
Install.The two ends of rock core 3 are fixed by injection plug 32 and output plug 31 respectively, inject and connect on plug 32
Being connected to filling tube 321, filling tube 321 injects fluid to rock core 3, and fluid can be gas or liquid, by stream in rock core 3
The state of body flowing indicates the structural parameters of rock core 3, and fluid is flowed out by rock core 3 tailing edge discharge opening 311.Meanwhile,
Space between packing element assembly 2 and confined pressure kettle 1 is formed with confined pressure chamber 15, and the liquid injection pipe 42 along regulation plug 4 is to confined pressure
Injecting confined pressure liquid in chamber 15, the air in confined pressure chamber 15 is discharged by exhaustor 41, is prevented air from accumulating in confined pressure chamber 15
Affect the pressure distribution in confined pressure chamber 15；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, it is ensured that injecting the fluid within packing element 21 can pass through from rock core 3 inside, and not edge
The gap seepage flow of packing element 21 and rock core 3.Location plug 5 is identical with regulation plug 4 structure, 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 exists
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
Packing element 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
The material of pipeline 34 is engineering plastics, and engineering plastics can reduce interference during ray scanning；Location plug 5 is near confined pressure chamber
The side of 15 is provided with pipeline cutting ferrule 56, and positions plug 5 and be provided with the pressure transmission hole 55 coaxial with pipeline cutting ferrule 56, pressure pipe
Line 34 extends in pipeline cutting ferrule 56, and pipeline cutting ferrule 56 supports and fix pressure pipeline 34, and pressure pipeline 34 passes through pipeline card
Set 56 connects with pressure transmission hole 55；The outside of location plug 5 connects metal pipe line 521, metal pipe line 521 and pressure transmission hole 55
Connection, location plug 5 is provided with the metal pipe line cutting ferrule 52 of fixing metal pipe line 521, and metal pipe line 521 connects pressure
Sensor, pressure transducer carries out the measurement of pressure, is conveniently monitored the pressure in packing element 21, it is ensured that test parameters
Accurately.
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
Being connected to position in plug 5, floating packing element positioning sleeve 22 is connected to regulate in plug 4, packing element assembly 2 respectively with positioning plug
5 connects with regulation plug 4 and to form packing element chamber.The end of floating packing element positioning sleeve 22 and fixing packing element positioning sleeve 23 is designed with
Taper seat, taper seat inserts packing element 21 inside and carries out axial limiting.Fixing packing element positioning sleeve 23 other end has thread segment, screw thread
Section is tightened on the plug 5 of location, and floating packing element positioning sleeve 22 other end is inserted directly in regulation plug 4.Regulation plug 4,
In the case of plug 5 position, location is fixing, packing element 21 passes through the floating packing element positioning sleeve 22 at two ends and fixing packing element positioning sleeve 23
Carry out axial 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 be solid
Determine packing element positioning sleeve 23 to threaded with location plug 5, 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；Circle on floating packing element positioning sleeve 22
Cone structure can guide packing element assembly 2 to enter regulation plug 4, it is ensured that the most accurately, shortening sets in the installation location of packing element assembly 2
The standby set-up time, improve test efficiency.
It is equipped with sealing member 26, the material selection fluorine of sealing member 26 on floating packing element positioning sleeve 22 and fixing packing element positioning sleeve 23
Rubber, 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, the other end of regulating sleeve 24
Abutting pre-load nut 25, pre-load nut 25 is threaded in regulation plug 4, plays axially location regulating sleeve 24 and packing element
The effect of assembly 2.The length of regulating sleeve 24 has tri-kinds of specifications of 40mm, 60mm, 80mm, can be according to the length of rock core 3
Degree selects suitable regulating sleeve 24, and the regulating sleeve 24 of plurality of specifications can make core holding unit be applicable to larger lengths model
The rock core 3 enclosed, expands the detection range of equipment.The radial dimension of packing element 21 is 1 inch or 1.5 inches, different size
Rock core 3 can detect different parameters, expands 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 pre-load nut of confined pressure kettle 1 successively
25, location nut 27, injection plug 32, output plug 31 and regulating sleeve 24, the center of packing element assembly 2 is 1 English
Very little 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 add from any one end
New rock core 3, changes 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, institute
Convenient to change the safe operation process of rock core 3.
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
Electrically heated 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 the preferred embodiment of the present invention, not carries out the scope of the present invention
Limiting, on the premise of designing spirit without departing from the present invention, technical scheme is made by those of ordinary skill in the art
Various deformation and improvement, all should fall in the protection domain that claims of the present invention determines.
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
With regulation plug (4), and it is positioned at described confined pressure kettle (1) and to be fixed on described location plug (5) and described regulation stifled
Packing element assembly (2) between head (4), it is characterised in that: between described packing element assembly (2) and described confined pressure kettle (1)
Space is formed with confined pressure chamber (15), and described confined pressure kettle (1) is carbon fiber-metal-engineering plastic composite material structure, described
Confined pressure kettle (1) include being separately fixed at described confined pressure kettle (1) two ends the metal structure fillet of screw (13), be laid on described
The shell (12) of carbon fiber in the fillet of screw (13) outside fits with the inwall of described shell (12) and two ends are connected described spiral shell
The liner (11) of stricture of vagina circle (13), the material of described liner (11) is engineering plastics, and described liner (11) two ends abut respectively
It is equipped with on described location plug (5) and described regulation plug (4), described location plug (5) and described regulation plug (4)
Gland nut (6), described gland nut (6) is fixedly connected on the described fillet of screw (13), and described gland nut (6)
It is 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
The packing element (21) of rock core (3), the fixing packing element positioning sleeve (23) being fastened in described packing element (21) two ends respectively and floating glue
Cylinder positioning sleeve (22), described fixing packing element positioning sleeve (23) is connected in described location plug (5), and described floating packing element is fixed
In position set (22) is connected to described regulation plug (4), described packing element assembly (2) respectively with described location plug (5) and institute
State regulation plug (4) connection 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 is provided with injection plug (32)
With output plug (31), described injection plug (32) and described output plug (31) are used for clamping rock core (3), described injection
Plug (32) is provided with filling tube (321), and described output plug (31) is provided with discharge opening (311), described packing element assembly
(2) be provided with regulating sleeve (24) near described regulation plug (4) side, described regulating sleeve (24) one end abuts described
Inject plug (32), other end abutting has pre-load nut (25), described pre-load nut (25) to be fixed on described regulation plug (4)
On, described regulating sleeve (24) is provided with sizes.
Core holding unit the most according to claim 2, it is characterised in that: described floating packing element positioning sleeve (22) two ends
Lateral surface is set to cone structure, and described fixing packing element positioning sleeve (23) is provided with cone structure near packing element (21) one end, another
End is provided with thread segment, and described thread segment is 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: in described packing element assembly (2)
Rock core (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
Power measuring point (33), described pressure-measuring-point (33) is provided with pressure pipeline (34), and the material of described pressure pipeline (34) is work
Engineering plastics.
Core holding unit the most according to claim 1, it is characterised in that: fill confined pressure liquid in described confined pressure chamber (15),
Described location plug (5) and described regulation plug (4) are provided with heating rod (51), the hot zone leaching of described heating rod (51)
Not in described 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 positioning plug
Head (5) is provided with anti-leak seal (53), the contact surface of described anti-leak seal (53) with the contact surface of described liner (11)
Roughness 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 axle
To locating slot and the radially-arranged fixing slot of distribution.
Core holding unit the most according to claim 1, it is characterised in that: the inwall of the described fillet of screw (13) is with described
Gland nut (6) is threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610607304.3A CN105973919B (en) | 2016-07-28 | 2016-07-28 | Core holding unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610607304.3A CN105973919B (en) | 2016-07-28 | 2016-07-28 | Core holding unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105973919A true CN105973919A (en) | 2016-09-28 |
| CN105973919B CN105973919B (en) | 2019-07-12 |
Family
ID=56951161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610607304.3A Expired - Fee Related CN105973919B (en) | 2016-07-28 | 2016-07-28 | Core holding unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105973919B (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106706684A (en) * | 2017-02-20 | 2017-05-24 | 中国石油大学(北京) | Rock core holder for CT scanning |
| CN107014676A (en) * | 2017-05-11 | 2017-08-04 | 上海岩间机电科技有限公司 | The high wide temperature clamper of axial stress carbon fiber high pressure |
| CN107044935A (en) * | 2017-04-26 | 2017-08-15 | 中国石油大学(华东) | The core holding unit and its method of work of a kind of rock fever fracturing experiment |
| CN107201899A (en) * | 2017-07-27 | 2017-09-26 | 张艳红 | Formation fluid pressure measurement apparatus |
| CN107389458A (en) * | 2017-06-23 | 2017-11-24 | 北京交通大学 | Balancing gate pit based on carbon fibre composite |
| CN107796694A (en) * | 2017-09-27 | 2018-03-13 | 中南大学 | A kind of high temperature triaxial core hydraulic fracture clamper and its application method |
| CN107894382A (en) * | 2017-10-05 | 2018-04-10 | 西南石油大学 | A kind of HTHP core holding unit |
| CN108254526A (en) * | 2017-12-14 | 2018-07-06 | 中国石油天然气股份有限公司 | Gas reservoir development simulation system and gas reservoir development simulation method based on same |
| CN108708716A (en) * | 2018-05-18 | 2018-10-26 | 西南石油大学 | A kind of multifunction three-dimensional flow simulating locking device |
| CN108916535A (en) * | 2018-08-30 | 2018-11-30 | 天津开发区天水华源机电设备技术有限公司 | A kind of flexible compound liner pipe fitting |
| CN109270246A (en) * | 2018-10-19 | 2019-01-25 | 成都理工大学 | A kind of radial more monitoring core holding units for fracture hole oil reservoir |
| CN109358079A (en) * | 2018-11-06 | 2019-02-19 | 广州海洋地质调查局 | The device and method changed in conjunction with CT technology measurement sea area shale flour sand reservoir structure |
| CN113624608A (en) * | 2020-05-07 | 2021-11-09 | 中国石油天然气股份有限公司 | Device and method for testing fracture initiation pressure of reservoir rock |
| CN114252378A (en) * | 2020-09-24 | 2022-03-29 | 青岛石大华通科技有限公司 | High-temperature and high-pressure clamp holder and using method thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008083993A1 (en) * | 2007-01-12 | 2008-07-17 | Yxlon International X-Ray Gmbh | Method and apparatus for in-situ investigation of mechanically loaded test objects |
| US20100126266A1 (en) * | 2007-04-26 | 2010-05-27 | Joseph Guillaume Christoffel Coenen | Formation core sample holder assembly and testing method |
| CN201803962U (en) * | 2010-08-05 | 2011-04-20 | 中国石油天然气股份有限公司 | Heterogeneous model CT scanning simulation device |
| CN102288629A (en) * | 2011-07-01 | 2011-12-21 | 中联煤层气国家工程研究中心有限责任公司 | Core holder |
| CN102425520A (en) * | 2011-12-31 | 2012-04-25 | 中国兵器工业集团第七○研究所 | Embedded oil charging structure for high-pressure fuel oil system |
| CN202360827U (en) * | 2011-12-09 | 2012-08-01 | 巨隆集团芜湖兴隆液压有限公司 | Large-flow safety valve for compound sealing |
| CN204536166U (en) * | 2015-04-14 | 2015-08-05 | 海安县石油科研仪器有限公司 | A kind of core holding unit that simultaneously can apply axle, radial pressure |
| CN104912975A (en) * | 2015-06-17 | 2015-09-16 | 王迪蔚 | Sealing structure and spring brake chamber |
| CN105840378A (en) * | 2016-05-18 | 2016-08-10 | 中国北方发动机研究所(天津) | Oil inlet sealing structure of diesel engine |
| CN205861577U (en) * | 2016-07-28 | 2017-01-04 | 北京瑞莱博石油技术有限公司 | Core holding unit |
-
2016
- 2016-07-28 CN CN201610607304.3A patent/CN105973919B/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008083993A1 (en) * | 2007-01-12 | 2008-07-17 | Yxlon International X-Ray Gmbh | Method and apparatus for in-situ investigation of mechanically loaded test objects |
| US20100126266A1 (en) * | 2007-04-26 | 2010-05-27 | Joseph Guillaume Christoffel Coenen | Formation core sample holder assembly and testing method |
| CN201803962U (en) * | 2010-08-05 | 2011-04-20 | 中国石油天然气股份有限公司 | Heterogeneous model CT scanning simulation device |
| CN102288629A (en) * | 2011-07-01 | 2011-12-21 | 中联煤层气国家工程研究中心有限责任公司 | Core holder |
| CN202360827U (en) * | 2011-12-09 | 2012-08-01 | 巨隆集团芜湖兴隆液压有限公司 | Large-flow safety valve for compound sealing |
| CN102425520A (en) * | 2011-12-31 | 2012-04-25 | 中国兵器工业集团第七○研究所 | Embedded oil charging structure for high-pressure fuel oil system |
| CN204536166U (en) * | 2015-04-14 | 2015-08-05 | 海安县石油科研仪器有限公司 | A kind of core holding unit that simultaneously can apply axle, radial pressure |
| CN104912975A (en) * | 2015-06-17 | 2015-09-16 | 王迪蔚 | Sealing structure and spring brake chamber |
| CN105840378A (en) * | 2016-05-18 | 2016-08-10 | 中国北方发动机研究所(天津) | Oil inlet sealing structure of diesel engine |
| CN205861577U (en) * | 2016-07-28 | 2017-01-04 | 北京瑞莱博石油技术有限公司 | Core holding unit |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106706684B (en) * | 2017-02-20 | 2024-04-05 | 中国石油大学(北京) | Core holder for CT scanning |
| CN106706684A (en) * | 2017-02-20 | 2017-05-24 | 中国石油大学(北京) | Rock core holder for CT scanning |
| CN107044935A (en) * | 2017-04-26 | 2017-08-15 | 中国石油大学(华东) | The core holding unit and its method of work of a kind of rock fever fracturing experiment |
| CN107014676A (en) * | 2017-05-11 | 2017-08-04 | 上海岩间机电科技有限公司 | The high wide temperature clamper of axial stress carbon fiber high pressure |
| CN107014676B (en) * | 2017-05-11 | 2024-06-11 | 上海岩间机电科技有限公司 | High-pressure wide-temperature clamp holder for high-axial stress carbon fiber |
| CN107389458A (en) * | 2017-06-23 | 2017-11-24 | 北京交通大学 | Balancing gate pit based on carbon fibre composite |
| CN107201899A (en) * | 2017-07-27 | 2017-09-26 | 张艳红 | Formation fluid pressure measurement apparatus |
| CN107796694A (en) * | 2017-09-27 | 2018-03-13 | 中南大学 | A kind of high temperature triaxial core hydraulic fracture clamper and its application method |
| CN107894382A (en) * | 2017-10-05 | 2018-04-10 | 西南石油大学 | A kind of HTHP core holding unit |
| CN108254526A (en) * | 2017-12-14 | 2018-07-06 | 中国石油天然气股份有限公司 | Gas reservoir development simulation system and gas reservoir development simulation method based on same |
| CN108708716A (en) * | 2018-05-18 | 2018-10-26 | 西南石油大学 | A kind of multifunction three-dimensional flow simulating locking device |
| CN108916535A (en) * | 2018-08-30 | 2018-11-30 | 天津开发区天水华源机电设备技术有限公司 | A kind of flexible compound liner pipe fitting |
| CN109270246A (en) * | 2018-10-19 | 2019-01-25 | 成都理工大学 | A kind of radial more monitoring core holding units for fracture hole oil reservoir |
| CN109358079A (en) * | 2018-11-06 | 2019-02-19 | 广州海洋地质调查局 | The device and method changed in conjunction with CT technology measurement sea area shale flour sand reservoir structure |
| CN109358079B (en) * | 2018-11-06 | 2023-10-27 | 广州海洋地质调查局 | Device and method for measuring sea area argillaceous silt reservoir structure change by combining CT technology |
| CN113624608A (en) * | 2020-05-07 | 2021-11-09 | 中国石油天然气股份有限公司 | Device and method for testing fracture initiation pressure of reservoir rock |
| CN113624608B (en) * | 2020-05-07 | 2023-09-26 | 中国石油天然气股份有限公司 | Reservoir rock fracture pressure testing device and method |
| CN114252378A (en) * | 2020-09-24 | 2022-03-29 | 青岛石大华通科技有限公司 | High-temperature and high-pressure clamp holder and using method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105973919B (en) | 2019-07-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105973919A (en) | Core holding unit | |
| CN101907586B (en) | High-temperature and high-pressure holder for nuclear magnetic resonance test of rock core | |
| US10823651B2 (en) | Supercritical carbon dioxide fracturing core holder under the influence of pore pressure saturation | |
| CN103498662B (en) | A kind of cement sheath structural integrity dynamics experimental device | |
| CN205861577U (en) | Core holding unit | |
| CN106645637B (en) | Three axis seepage flow multifunctional compression chamber of rock-soil material freeze thawing thermal cycle | |
| CN110057739A (en) | High temperature and pressure coal petrography supercritical carbon dioxide pressure break-creep-seepage flow test device | |
| CN105301041B (en) | A kind of condenser type explosive wastewater thermal volume expansion measuring system | |
| CN104034745B (en) | A kind of high pressure nuclear magnetic resonance CO2geological storage model assay systems | |
| CN110118794B (en) | High-temperature high-pressure nuclear magnetic resonance core holder | |
| CN101311717B (en) | Rotary type ultrasound flaw-detecting coupling device of probe for detecting defect of pipes and bar material | |
| CN110057740A (en) | High temperature and pressure coal petrography supercritical carbon dioxide pressure break-creep-seepage tests method | |
| CN104596857B (en) | The device of rock shearing seepage flow is measured under a kind of HTHP | |
| CN104048982A (en) | Multifunctional rock core holder for rock core scale nuclear magnetic resonance test | |
| CN106442264A (en) | Device for testing permeability under high temperature and high pressure | |
| CN109243639B (en) | Nuclear reactor steam generator heat transfer tube microcrack leakage amount experimental device and method | |
| CN105004762A (en) | Core holding unit | |
| CN104897711B (en) | Core holding unit | |
| CN207231976U (en) | A kind of different temperatures, the lower rock permeability factor detection device of pressure effect | |
| CN107436279A (en) | The axle rock permeability evaluating apparatus of high temperature three | |
| CN108152341B (en) | Low-temperature fluid in-pipe flowing capacitance tomography device | |
| CN203929686U (en) | A kind of Multifunctional core clamp holder of rock core Scaling Kernel magnetic resonance experiments | |
| CN204782996U (en) | Stratum leakage analogue means | |
| CN110006805A (en) | Carbon dioxide blasting impact permeates integrated experimental rig and its test method | |
| CN203688415U (en) | Gradient core holding unit with pressure guide ring |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190712 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |