CN107144515A - Imbibition experimental provision and its method - Google Patents
Imbibition experimental provision and its method Download PDFInfo
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- CN107144515A CN107144515A CN201710545312.4A CN201710545312A CN107144515A CN 107144515 A CN107144515 A CN 107144515A CN 201710545312 A CN201710545312 A CN 201710545312A CN 107144515 A CN107144515 A CN 107144515A
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- 238000005213 imbibition Methods 0.000 title claims abstract description 137
- 238000000034 method Methods 0.000 title abstract description 13
- 238000005259 measurement Methods 0.000 claims abstract description 69
- 239000000463 material Substances 0.000 claims abstract description 20
- 238000002474 experimental method Methods 0.000 claims description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 239000011148 porous material Substances 0.000 claims description 14
- 238000005481 NMR spectroscopy Methods 0.000 claims description 11
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 10
- 229920002530 polyetherether ketone Polymers 0.000 claims description 10
- 239000011435 rock Substances 0.000 claims description 9
- 230000005311 nuclear magnetism Effects 0.000 claims description 8
- 238000012360 testing method Methods 0.000 claims description 8
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 claims 1
- 238000010998 test method Methods 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 11
- 238000011084 recovery Methods 0.000 abstract description 7
- 230000000007 visual effect Effects 0.000 abstract description 6
- 239000003921 oil Substances 0.000 description 14
- 230000008901 benefit Effects 0.000 description 6
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 238000012545 processing Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 238000012800 visualization Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 238000004088 simulation Methods 0.000 description 4
- 238000013459 approach Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000010779 crude oil Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000012512 characterization method Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006356 dehydrogenation reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000008398 formation water Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N24/00—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects
- G01N24/08—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects by using nuclear magnetic resonance
- G01N24/081—Making measurements of geologic samples, e.g. measurements of moisture, pH, porosity, permeability, tortuosity or viscosity
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- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Pathology (AREA)
- Immunology (AREA)
- High Energy & Nuclear Physics (AREA)
- Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Biochemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Dispersion Chemistry (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The present invention relates to imbibition oil recovery field, in particular to a kind of imbibition experimental provision and its method.The imbibition experimental provision includes measurement assembly, and for accommodating the receiving component of core sample to be measured and imbibition medium, the measurement assembly and the receiving component are prepared from using nonmetallic materials, and the measurement assembly and the receiving assembly surface are provided with oleophobic layer；The component that accommodates includes cavity and is arranged at the observation window of the cavity wall；The measurement assembly includes graded tube, and the graded tube is connected with the cavity.The imbibition experimental provision can be loaded directly into magnetic resonance detection instrument, measurement accuracy is high and disclosure satisfy that visual needs.
Description
Technical field
The present invention relates to imbibition oil recovery field, in particular to a kind of imbibition experimental provision and its method.
Background technology
Displacement effect of the wetting phase produced in porous media by the effect of capillary force to non-wetted phase is called imbibition,
Because LOW PERMEABILITY RESERVOIR pore throat is tiny, capillary force is high, and spontaneous imbibition effect is its important oil recovery mechanism.Therefore, in the lab
Imbibition experiment under simulation stratum condition has important meaning to the Efficient Development for instructing crack, substrate composed porous media oil reservoir
Justice.
The research method of existing imbibition experimental provision is mainly two kinds of volumetric method and mass method, and wherein mass method is due to reality
The reasons such as automaticity is high and easy to operate are tested to be widely used in current imbibition research, but because core sample is in imbibition
Mass change in journey is very small, easily by shaking, the extraneous factor such as air influenceed, slight disturbance will bring larger mistake
Difference, influences measurement accuracy.
The experiment condition of current spontaneous imbibition experimental provision is generally normal temperature and pressure, it is impossible to a preferable simulated formation (constant temperature
Degree and pressure) under the conditions of host rock imbibition act on, cause conventional atmospheric imbibition instrument measurement result with truly
There is some difference for layer situation.And traditional high pressure imbibition instrument can not be loaded directly into, in magnetic resonance detection instrument, restricting
The further microscopic sdIBM-2+2q.p.approach of core sample imbibition recovery percent of reserves changing rule under condition of high voltage, and there is measurement error simultaneously
It is larger, it is impossible to the problems such as meeting visualization needs.
For the deficiency of existing experimental provision, it is necessary to explore it is a kind of can be used in combination with magnetic resonance detection instrument it is visual
The imbibition experimental provision of change, for imbibition dynamic law of the further investigation simulation low-permeability oil deposit matrix under certain temperature and pressure
Important scientific basis is provided.
In view of this, it is special to propose the present invention.
The content of the invention
The first object of the present invention is to provide a kind of imbibition experimental provision, with alleviate it is existing present in imbibition experiment fill
Put can not be loaded directly into magnetic resonance detection instrument, measurement error it is big and the problem of visual needs can not be met, should
Imbibition experimental provision have can be loaded directly into magnetic resonance detection instrument, measurement accuracy is high and disclosure satisfy that visual need
The advantage wanted.
The second object of the present invention is to provide a kind of imbibition experimental method, filled the process employs above-mentioned imbibition experiment
Put, it is small and being capable of visual advantage with measurement error.
To achieve these goals, the present invention uses following technical scheme：
In a first aspect, the invention provides a kind of imbibition experimental provision, including measurement assembly, and for accommodating rock to be measured
The receiving component of heart sample and imbibition medium, the measurement assembly and the receiving component are using nonmetallic materials preparation
Into, and the measurement assembly and the receiving assembly surface are provided with oleophobic layer；
The component that accommodates includes cavity and is arranged at the observation window of the cavity wall；
The measurement assembly includes graded tube, and the graded tube is connected with the cavity.
As further preferably technical scheme, the measurement assembly also includes upper end capping, lower end capping and around institute
At least three connecting rods of graded tube are stated, the top and bottom of the connecting rod are covered and the lower end seal with the upper end respectively
Lid is connected；
The upper end of the graded tube is connected with upper end capping, and lower end is connected with lower end capping；The graded tube
The intercommunicating pore covered by the lower end is connected with the cavity.
As further preferably technical scheme, the upper end capping and lower end capping are equipped with and the graded tube
The fixing groove that matches of Outside Dimensions, the top and bottom of the graded tube are respectively arranged in two fixing grooves.
As further preferably technical scheme, the lower end capping includes fixed part and connecting portion, the fixed part
Outside Dimensions are more than the Outside Dimensions of the connecting portion；The cavity top end is provided with connector, the size of the connecting portion and institute
The size for stating connector matches；The connecting portion is connected with the connector.
As further preferably technical scheme, the connecting portion is to be threadedly coupled with the connector.
As further preferably technical scheme, the intercommunicating pore is in circular platform type, the diameter on the intercommunicating pore top and institute
The internal diameter for stating graded tube is identical, and the diameter of the intercommunicating pore bottom is identical with the internal diameter of the cavity.
As further preferably technical scheme, the receiving component also includes inlet and Stress control interface, described
Core sample support base is provided with cavity；
Preferably, the observation window includes enlarging lens.
As further preferably technical scheme, the imbibition experimental provision also includes support component, the support component
It is connected with the measurement assembly or the receiving component；
Preferably, the measurement assembly, the non-viewing window segment of the receiving component and the support component are by PEEK
Material is made.
Second aspect, the invention provides a kind of imbibition experimental method using above-mentioned imbibition experimental provision, including it is following
Step：
(a), imbibition experimental provision is connected：Known basic physical parameters and the core sample for setting up irreducible water saturation are put
It is placed in receiving component, measurement assembly is connected with accommodating component；
(b), experiment test：Injected into cavity at imbibition medium to the mark line of graded tube；
(c), DATA REASONING and information gathering：Reading in graded tube is read every 20-40min, while entering by observation window
Row core sample IMAQ, when stable reading 24-36h is constant in graded tube, stops metering.
As further preferably technical scheme, also include opening pressure in step (b) after injection imbibition medium is stopped
Control interface, cut-in pressure pump, and adjust the size of pressure pump output pressure to reach pressure needed for experiment；Finally, by imbibition
Experimental provision is positioned in insulating box, needed for setting experiment the step of temperature；
Preferably, T before imbibition is also included before step (a)2Relaxation time is determined：The rock core of irreducible water saturation will be set up
Sample is positioned in Nuclear Magnetic Resonance Measurement instrument, sets nuclear-magnetism experiment parameter, oil and water zonation feature in core sample before acquisition imbibition；
Preferably, imbibition end time T is also included after step (c)2Relaxation time is determined：Imbibition experimental provision is placed
In in Nuclear Magnetic Resonance Measurement instrument, nuclear-magnetism experiment parameter is set, oil and water zonation feature in core sample when obtaining imbibition termination.
Imbibition experimental provision and its method that the present invention is provided, its advantage is：
The imbibition experimental provision that the present invention is provided include measurement assembly and accommodate component, using when, by core sample to be measured
It is put into receiving component, and imbibition medium is injected into the cavity for accommodating component, treats that imbibition medium will be filled with the mark of graded tube
Stop injection when remembering line, then data at regular intervals on collection graded tube；Simultaneously as accommodating component cavity
Side wall is provided with observation window, can also gather the image during core sample imbibition, obtains the not imbibition of core sample in the same time
Recovery percent of reserves changing rule；Further, since measurement assembly and receiving assembly surface are provided with oleophobic layer, therefore, imbibition crude oil
It is difficult to be adsorbed in measurement assembly and accommodates the surface of component, and then improve measurement accuracy, improves observation window definition, satisfaction can
The need for change；Further, since measurement assembly and receiving component are prepared from using nonmetallic materials, therefore above-mentioned imbibition is tried
Experiment device can also be loaded directly into the profit point of porous media when in magnetic resonance detection instrument, obtaining before imbibition and imbibition is terminated
The microscopic sdIBM-2+2q.p.approach data such as cloth feature.
In addition, PEEK materials have the excellent properties such as high temperature resistant, self-lubricating, easy processing and high mechanical properties, when measurement group
When part, the non-viewing window segment of receiving component and support component are made by PEEK materials, above-mentioned imbibition experimental provision can be met
Pressure-resistant 15MPa is used in conjunction using needing with magnetic resonance detection instrument, can core sample imbibition extraction journey under detailed characterizations condition of high voltage
The changing rule of degree.
The imbibition experimental method method processing step that the present invention is provided rationally, and tests dress as a result of above-mentioned imbibition
Put, therefore have the advantages that image, measurement accuracy height and the satisfaction visualization needs during core sample imbibition can be gathered.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The accompanying drawing used required in embodiment or description of the prior art is briefly described, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the imbibition experimental provision of one embodiment of the present invention；
Fig. 2 is the decomposition texture schematic diagram of the measurement assembly of one embodiment of the present invention；
Fig. 3 is the decomposition texture schematic diagram of the receiving component of one embodiment of the present invention；
Fig. 4 is the structural representation of the support component of one embodiment of the present invention；
Fig. 5 is the flow chart of the imbibition experimental method of one embodiment of the present invention.
Icon：1- measurement assemblies；2- support components；3- accommodates component；4- pressure caps；4 (1)-the first pressure cap；4 (2)-the second
Pressure cap；4 (3)-the three pressure cap；4 (4)-the four pressure cap；5- upper ends are covered；6- connecting rods；6 (1)-head rod；6 (2)-the
Two connecting rods；6 (3)-the three connecting rod；6 (4)-the four connecting rod；7- graded tubes；8- lower ends are covered；9- connectors；10- chambers
Body；11- observation windows；12- core samples to be measured；13- core sample support bases；14- inlets；15- bottom cover screws；16- bottoms；
17- Stress control interfaces；18- fixed parts；19- connecting portions.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, technical scheme will be carried out below
Clear, complete description.Obviously, described embodiment is only a part of embodiment of the invention, rather than whole embodiments.
Based on the embodiment in the present invention, those of ordinary skill in the art institute resulting on the premise of creative work is not made
There are other embodiments, belong to the scope that the present invention is protected.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Be easy to the description present invention and simplify description, rather than indicate or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that indicating or implying relative importance.
In the description of the invention, in addition it is also necessary to explanation, unless otherwise clearly defined and limited, term " installation ",
" connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or integratedly be connected
Connect；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, can
To be the connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood with concrete condition
Concrete meaning in the present invention.
In a first aspect, as Figure 1-4, the invention provides a kind of imbibition experimental provision, including measurement assembly 1, and
Receiving component 3 for accommodating core sample 12 to be measured and imbibition medium, measurement assembly 1 and receiving component 3 are using nonmetallic
Material is prepared from, and measurement assembly 1 and receiving component 3 surface are provided with oleophobic layer (not shown)；
Accommodating component 3 includes cavity 10 and is arranged at the observation window 11 of the side wall of cavity 10；
Measurement assembly 1 includes graded tube 7, and graded tube 7 is connected with cavity 10.
Existing imbibition experimental provision can not be loaded directly into magnetic resonance detection instrument, measurement error is big and can not expire
The need for foot visualization.Compared with prior art, the imbibition experimental provision that the present invention is provided includes measurement assembly and accommodates component,
Using when, by core sample to be measured be put into receiving component in, and to accommodate component cavity in inject imbibition medium, treat imbibition be situated between
Stop injection when matter is the mark line that will be filled with graded tube, then data at regular intervals on collection graded tube；Together
When, because the side wall for accommodating component cavity is provided with observation window, the image during core sample imbibition can be also gathered, is obtained not
The imbibition recovery percent of reserves changing rule of core sample in the same time；Further, since measurement assembly and receiving assembly surface are provided with
Oleophobic layer, therefore, imbibition crude oil are difficult to be adsorbed in measurement assembly and accommodate the surface of component, and then improve measurement accuracy, improve
Observation window definition, meets visual needs；Further, since measurement assembly and receiving component use nonmetallic materials system
It is standby to form, therefore above-mentioned imbibition experimental rig can also be loaded directly into magnetic resonance detection instrument, obtaining before imbibition and imbibition
The microscopic sdIBM-2+2q.p.approach data such as oil and water zonation feature of porous media during termination.
In the present invention, typical but non-limiting nonmetallic materials include ceramic material or plastic material, preferably engineering
Plastic material, more preferably PEEK (Polyetheretherketone, polyether-ether-ketone) material, PEEK materials have high temperature resistant,
The excellent properties such as self-lubricating, easy processing and high mechanical properties；With preferable pressure-bearing property and the requirement for meeting nuclear magnetic resonance test.
It should be appreciated that oleophobic layer can using it is existing any one or at least two have oleophobic effects materials adopt
Measurement assembly is arranged at the mode such as spraying or printing and accommodates assembly surface.
In the present invention, typical but non-limiting imbibition medium includes simulated formation water, fracturing fluid, chemical solution, life
Any one in thing enzyme solutions or simulation oil.
It is preferably carried out in one kind in mode, measurement assembly 1 also includes upper end capping 5, lower end capping 8 and around graded tube
7 at least two connecting rods 6, the top and bottom of connecting rod 6 are connected with upper end capping 5 and lower end capping 8 respectively；
The upper end of graded tube 7 is connected with upper end capping 5, and lower end is connected with lower end capping 8；Graded tube 7 covers 8 by lower end
On intercommunicating pore (not shown) be connected with cavity 10.
Originally it is preferably carried out mode and 5 Hes is covered by upper end there is provided a kind of measurement assembly of specific structure, i.e. graded tube 7
Lower end covers 8 to fix, meanwhile, at least three connecting rods 6 around graded tube 7 can connect upper end capping 5 and lower end capping 8
Pick up and, the structure of whole measurement assembly 1 is more consolidated, good integrity.
It should be noted that connecting rod 6 may be configured as three, four or five etc., four are preferably arranged to.Connecting rod 6
Top and upper end capping 5 be connected by pressure cap 4, it is to be threadedly coupled that bottom and the lower end of connecting rod, which are covered,.As shown in Fig. 2 even
Extension bar includes head rod 6 (1), the second connecting rod 6 (2), the 3rd connecting rod 6 (3) and the 4th connecting rod 6 (4), and pressure cap includes
First pressure cap 4 (1), the second pressure cap 4 (2), the 3rd pressure cap 4 (3) and the 4th pressure cap 4 (4).
It is preferably carried out in one kind in mode, upper end capping 5 and lower end capping 8 are equipped with Outside Dimensions with graded tube 7
The fixing groove (not shown) matched, the top and bottom of graded tube 7 are respectively arranged in two fixing grooves.Above-mentioned setting
There is the upper end capping and lower end capping of fixing groove be very convenient and firmly to fix graded tube, and when need cleaning or
When changing graded tube, directly it is taken out from fixing groove.
It is preferably carried out in one kind in mode, lower end capping 8 includes fixed part 18 and connecting portion 19, the periphery of fixed part 18
Size is more than the Outside Dimensions of connecting portion 19；The top of cavity 10 is provided with connector 9, and the size of connecting portion 19 is big with connector 9
It is small to match；Connecting portion 19 is connected with connector 9.Present embodiments provide for a kind of specific measurement assembly and receiving component
Connected mode, i.e., using said structure, the connecting portion of the lower end capping of measurement assembly completely snugly embedded can accommodate component
In the connector of cavity, it is achieved in measurement assembly and accommodates being connected for component.
It is preferably carried out in one kind in mode, the connecting portion is to be threadedly coupled with connector 9.Optionally, connecting portion is set
There is external screw thread, connector is provided with the internal thread matched with above-mentioned external screw thread, and external screw thread and internal thread cooperate, by connecting portion
Connected with connector, above-mentioned connected mode is solid and reliable.
Optionally, the periphery of connecting portion processes fluted upwards, is threaded in above-mentioned groove, meanwhile, accommodate component
Cavity wall on be machined with through hole with groove match, during practical application, screw is inserted and connected by above-mentioned through hole
In groove.Above-mentioned groove and through hole may be configured as one, two, three or four etc..
It is preferably carried out in one kind in mode, the intercommunicating pore is in circular platform type, the diameter and scale on the intercommunicating pore top
The internal diameter of pipe 7 is identical, and the diameter of the intercommunicating pore bottom is identical with the internal diameter of cavity 10.
Truncated cone is removed with a plane parallel to circular cone bottom surface, the part between bottom surface and section is called round platform.It is above-mentioned
Imbibition medium can be pushed in graded tube by the intercommunicating pore of circular platform type more upwards.
It is preferably carried out in one kind in mode, accommodating component 3 also includes inlet 14 and Stress control interface 17, cavity 10
It is interior to be provided with core sample support base 13.Imbibition medium can be injected in cavity by inlet；Stress control interface connects compression pump
Deng the size of pressure pump output pressure can be adjusted as needed, the pressure size in control storing apparatus；Core sample support base
For placing core sample to be measured.
Optionally, the fixed support for fixing core sample to be measured is provided with above-mentioned cavity.
It is preferably carried out in one kind in mode, observation window 11 includes enlarging lens.For the observation and collection that become apparent from
The not imbibition phenomena of testing rock core sample in the same time, above-mentioned observation window is provided with enlarging lens and carrys out enlarged drawing.
Optionally, as shown in figure 3, accommodating the bottom 16 that component 3 also includes being arranged at the bottom of cavity 10, inlet 14 and pressure
Power control interface 17 is arranged at bottom 16, and bottom 16 is connected by bottom cover screws 15 with cavity 10.
It is preferably carried out in one kind in mode, the imbibition experimental provision also includes support component 2, and support component 2 is with surveying
Measure component 1 or accommodate component 3 and be connected.
Optionally, above-mentioned support component includes base and support arm, and the fixed part that above-mentioned support arm is covered with lower end is connected,
Above-mentioned base is in O-shaped.
Preferably, the measurement assembly, the non-viewing window segment of the receiving component and the support component are by PEEK
Material is made.It is above-mentioned to ooze when measurement assembly, the non-viewing window segment of receiving component and support component are made by PEEK materials
Pressure-resistant 15MPa can be met and use needs by inhaling experimental provision, be used in conjunction with magnetic resonance detection instrument, can rock under detailed characterizations condition of high voltage
The changing rule of heart sample imbibition recovery percent of reserves.
Preferably, observation window is prepared from using special glass.
By selecting above-mentioned specific material, above-mentioned imbibition experimental provision can meet pressure-resistant 15MPa, and temperature is less than 70 DEG C
Use needs.
During actual experiment, it can not be completely desorbed to the crude oil of outer surface from core sample inside imbibition and enter imbibition
In medium, core sample surface can be partly attached to, volume measuring accuracy is influenceed.It is therefore preferred that being set up in above-mentioned cavity
Agitating device, by stirring imbibition medium in good time in experimentation, excludes the bubble and oil droplet for being attached to core sample surface,
Further improve the precision of imbibition experiment.
Second aspect, the invention provides a kind of imbibition experimental method using above-mentioned imbibition experimental provision, including it is following
Step：
(a), imbibition experimental provision is connected：Known basic physical parameters and the core sample for setting up irreducible water saturation are put
It is placed in receiving component, measurement assembly is connected with accommodating component；
(b), experiment test：Injected into cavity at imbibition medium to the mark line of graded tube；
(c), DATA REASONING and information gathering：Reading in graded tube is read every 20-40min, while entering by observation window
Row core sample IMAQ, when stable reading 24-36h is constant in graded tube, stops metering.
The physical parameter of above-mentioned core sample refer to porosity, permeability, than surface, phase permeability, wetability, hole-
The parameter such as venturi and pore throat.Above time interval is typical but non-limiting to be：20min、22min、24min、26min、
28min, 30min, 32min, 34min, 36min, 38min or 40min.The above stable reading time is typical but non-limiting
For：24h, 25h, 26h, 27h, 28h, 29h, 30h, 31h, 32h, 33h, 34h, 35h or 36h.
The imbibition experimental method method processing step that the present invention is provided rationally, and tests dress as a result of above-mentioned imbibition
Put, therefore have the advantages that image, measurement accuracy height and the satisfaction visualization needs during core sample imbibition can be gathered.
Optionally, the basic physical parameters of above-mentioned core sample are according to physical properties of rock《SY/T6385-2016》With wetability
《SY/T5153-2007》Measurement standard is obtained.
Optionally, above-mentioned core sample irreducible water saturation is set up using high pressure driving device.
It is preferably carried out in one kind in mode, also includes opening pressure control in step (b) after injection imbibition medium is stopped
Interface processed, cut-in pressure pump, and adjust the size of pressure pump output pressure to reach pressure needed for experiment；Finally, it is imbibition is real
Experiment device is positioned in insulating box, needed for setting experiment the step of temperature.
By above step, core sample can be made to be under fixed temperature and pressure according to actual needs, with more preferable
Simulation stratum condition, measurement result is more accurately reflected the fuel-displaced each item data of imbibition under real strata condition,
Reliable reference is provided for practical application.
Preferably, T before imbibition is also included before step (a)2Relaxation time is determined：The rock core of irreducible water saturation will be set up
Sample is positioned in Nuclear Magnetic Resonance Measurement instrument, sets nuclear-magnetism experiment parameter, obtains core sample oil and water zonation feature before imbibition.
Preferably, imbibition end time T is also included after step (c)2Relaxation time is determined：Imbibition experimental provision is placed
In in Nuclear Magnetic Resonance Measurement instrument, nuclear-magnetism experiment parameter is set, core sample oil and water zonation feature when imbibition is terminated is obtained.
The imbibition experimental provision of the present invention can be loaded directly into surveying in nuclear magnetic resonance due to being made of non-metallic material
Measure in instrument, put it into Nuclear Magnetic Resonance Measurement instrument, set after experiment parameter before imbibition and when imbibition is terminated, you can obtained
More accurate and extensive experimental data.
Preferably, the imbibition experimental method using above-mentioned imbibition experimental provision is illustrated in figure 5, following step is specifically included
Suddenly：
(a), core sample is pre-processed：According to physical properties of rock《SY/T6385-2016》With wetability《SY/T5153-2007》
Measurement standard, measures the core sample basic physical parameters such as core sample porosity, permeability and wetability, utilizes high pressure displacement
Device sets up core sample irreducible water saturation；
(b), T before imbibition2Relaxation time is determined：The core sample for setting up irreducible water saturation is positioned over into nuclear magnetic resonance to survey
Measure in instrument, nuclear-magnetism experiment parameter is set, oil and water zonation feature in core sample before acquisition imbibition；
(c), imbibition experimental provision is connected：Core sample is positioned on the core sample support base for accommodating component, will surveyed
Amount component is connected with accommodating component, is finally placed in support component；
(d), experiment test：Opening imbibition medium needed for injection experimentses in the inlet accommodated on component, cavity, (imbibition is situated between
Matter is through dehydrogenation), when imbibition medium is filled to the mark line of graded tube, stop injection；Inlet is closed, pressure control is opened
Interface processed, according to experiment needs, adjusts pressure needed in pressure pump output pressure size, control experimental provision；Finally, by imbibition
Experimental provision is positioned in insulating box, sets temperature needed for experiment；
(e), DATA REASONING and information gathering：Reading in graded tube is read every 20-40min, while entering by observation window
Row core sample IMAQ, when stable reading 24-36h is constant in graded tube, stopping metering, (period can be according to experiment need
Ask, device is taken out from insulating box, carry out nuclear-magnetism detection)；
(f), imbibition end time T2Relaxation time is determined：Imbibition experimental provision is positioned in Nuclear Magnetic Resonance Measurement instrument,
Experiment parameter is set, oil and water zonation feature in core sample when obtaining imbibition termination.
Above-mentioned imbibition experimental method processing step rationally, and employs imbibition experimental provision provided by the present invention, by
It is made, therefore, it is possible to be used in combination with Nuclear Magnetic Resonance Measurement instrument, and can be realized of nonmetallic materials in the imbibition experimental provision
Visualization, can simulated formation high temperature and high pressure environment, can extensively and accurately measure experimental data, for further investigation simulate it is low
Permeate imbibition dynamic law of the oil reservoir matrix under certain temperature and pressure and important scientific basis is provided.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, or which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
Scheme.
Claims (10)
1. a kind of imbibition experimental provision, it is characterised in that including measurement assembly, and for accommodating core sample to be measured and imbibition
The receiving component of medium, the measurement assembly and the receiving component are prepared from using nonmetallic materials, and the measurement
Component and the receiving assembly surface are provided with oleophobic layer；
The component that accommodates includes cavity and is arranged at the observation window of the cavity wall；
The measurement assembly includes graded tube, and the graded tube is connected with the cavity.
2. imbibition experimental provision according to claim 1, it is characterised in that the measurement assembly also include upper end capping,
Lower end is covered and around at least three connecting rods of the graded tube, the top and bottom of the connecting rod respectively with the upper end
Capping is connected with lower end capping；
The upper end of the graded tube is connected with upper end capping, and lower end is connected with lower end capping；The graded tube passes through
Intercommunicating pore in the lower end capping is connected with the cavity.
3. imbibition experimental provision according to claim 2, it is characterised in that the upper end capping and lower end capping are equal
The fixing groove matched provided with the Outside Dimensions with the graded tube, the top and bottom of the graded tube are respectively arranged at two
In the fixing groove.
4. imbibition experimental provision according to claim 2, it is characterised in that the lower end capping includes fixed part and connection
Portion, the Outside Dimensions of the fixed part are more than the Outside Dimensions of the connecting portion；The cavity top end is provided with connector, the company
The size of socket part and the size of the connector match；The connecting portion is connected with the connector.
5. imbibition experimental provision according to claim 4, it is characterised in that the connecting portion is screw thread with the connector
Connection.
6. imbibition experimental provision according to claim 2, it is characterised in that the intercommunicating pore is in circular platform type, the connection
The diameter on hole top is identical with the internal diameter of the graded tube, and the diameter of the intercommunicating pore bottom is identical with the internal diameter of the cavity.
7. imbibition experimental provision according to claim 1, it is characterised in that the receiving component also includes inlet and pressure
Core sample support base is provided with power control interface, the cavity；
Preferably, the observation window includes enlarging lens.
8. the imbibition experimental provision according to claim any one of 1-7, it is characterised in that the imbibition experimental provision is also wrapped
Support component is included, the support component is connected with the measurement assembly or the receiving component；
Preferably, the measurement assembly, the non-viewing window segment of the receiving component and the support component are by PEEK materials
It is made.
9. using the imbibition experimental method of the imbibition experimental provision described in claim any one of 1-8, it is characterised in that including with
Lower step：
(a), imbibition experimental provision is connected：Known basic physical parameters and the core sample for setting up irreducible water saturation are positioned over
Accommodate in component, measurement assembly is connected with accommodating component；
(b), experiment test：Injected into cavity at imbibition medium to the mark line of graded tube；
(c), DATA REASONING and information gathering：Reading in graded tube is read every 20-40min, while carrying out rock by observation window
Heart sample image is gathered, when stable reading 24-36h is constant in graded tube, stops metering.
10. imbibition test method according to claim 9, it is characterised in that stopping injecting imbibition medium in step (b)
Also include opening Stress control interface, cut-in pressure pump afterwards, and adjust the size of pressure pump output pressure to reach that experiment is required
Pressure；Finally, imbibition experimental provision is positioned in insulating box, needed for experiment is set the step of temperature；
Preferably, T before imbibition is also included before step (a)2Relaxation time is determined：The core sample of irreducible water saturation will be set up
It is positioned in Nuclear Magnetic Resonance Measurement instrument, nuclear-magnetism experiment parameter is set, oil and water zonation feature in core sample before acquisition imbibition；
Preferably, imbibition end time T is also included after step (c)2Relaxation time is determined：Imbibition experimental provision is positioned over core
In magnetic resonance measurement instrument, nuclear-magnetism experiment parameter is set, oil and water zonation feature in core sample when obtaining imbibition termination.
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| CN110174335A (en) * | 2019-03-12 | 2019-08-27 | 北京建筑大学 | The equivalent maximum diameter of hole of fibrous material based on measurement obtains system and method |
| CN111521543A (en) * | 2020-06-10 | 2020-08-11 | 东北石油大学 | Compact reservoir core static pressurization visual imbibition experimental method |
| CN111521542A (en) * | 2020-06-10 | 2020-08-11 | 东北石油大学 | Visual imbibition experimental apparatus of tight reservoir rock core static pressurization |
| CN114088747A (en) * | 2021-11-23 | 2022-02-25 | 西安石油大学 | Core holder |
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| CN111521543B (en) * | 2020-06-10 | 2021-09-07 | 东北石油大学 | Compact reservoir core static pressurization visual imbibition experimental method |
| CN114088747A (en) * | 2021-11-23 | 2022-02-25 | 西安石油大学 | Core holder |
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