CN208476924U - The real-time dynamics evaluation apparatus of full-hole core acid corrosion fracture - Google Patents
The real-time dynamics evaluation apparatus of full-hole core acid corrosion fracture Download PDFInfo
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- CN208476924U CN208476924U CN201820817869.9U CN201820817869U CN208476924U CN 208476924 U CN208476924 U CN 208476924U CN 201820817869 U CN201820817869 U CN 201820817869U CN 208476924 U CN208476924 U CN 208476924U
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Abstract
The utility model relates to a kind of real-time dynamics evaluation apparatus of full-hole core acid corrosion fracture, including sequentially connected servo pressure charging system, core holding unit and flow measurement device, the core holding unit is rectangular parallelepiped structure, it closes the bottom surface of the rectangular parallelepiped structure, the top surface of the rectangular parallelepiped structure opens up rectangular aperture, it is cuboid hollow area between the corresponding bottom surface of the rectangular aperture, the core holding unit is provided with full-hole core.The processing request and step of test rock sample were both can simplify using the evaluating apparatus, it can be with the high real-time dynamic rule with flow conductivity of seam of the real simulation formation rock under acidic fluid effect, new approaches are provided for the research of acid corrosion fracture, while also providing effectively evaluating method for the research of acidizing fracturing process.
Description
Technical field
The utility model belongs to petroleum works technical field, and in particular to a kind of full-hole core acid corrosion fracture
Real-time dynamics evaluation apparatus.
Background technique
Acid-fracture technology is the most important reservoir stimulation measure of carbonate reservoir, and acid corrosion fracture is evaluation
The important indicator of acid fracturing effect, and the important evidence of design and optimization acid fracturing.
Existing acid corrosion fracture test uses rock beam, needs to carry out cylindrical type rock core into complicated cut
It cuts, then the cambered cuboid rock beam of end face band is made, however easily cause the fracture and damage of rock sample in cutting process, and
And time-consuming for cutting operation, influences testing efficiency.
Existing acid corrosion fracture test, carries out acid etching for rock beam first, then again under specific condition of experiment
Rock beam after acid etching is moved on on tester to the test for carrying out acid corrosion fracture.During the test, it needs to rock beam
It pressurizes, is passed through gas or liquid between backward two rock beams that pressurize.When measurement, changes the active force to bearing plate, pass through
Measurement gas or liquid calculate pressure difference in the pressure of entrance and exit, and then obtain acid corrosion fracture.But this
Kind test method can only test the fracture condudtiviy after acid etching, cannot detect the change of fracture condudtiviy in acid corrosion process
Change.
Application publication number is that the patent of invention of CN102587886A, CN101864949A all disclose a kind of acid-etched fracture and leads
The test device and test method of stream ability, but what is used during the test is all cuboid rock beam, and cuboid
Rock beam be from cylindrical rock core by multi-pass cutting obtained from, rock core after multi-pass is cut, no matter formalness
Or interior microscopic tissue all will be destroyed seriously, this to test used sample characteristics of for example and practical core character exists
Very big difference, causes test result to be distorted.In addition, the prior art can only fracture condudtiviy after testing rock core acid etching, cannot
Test the real-time dynamic changes in entire acid corrosion process.Therefore it needs to develop a kind of novel full-hole core acid-etched fracture
The real-time dynamics evaluation apparatus of flow conductivity.
Summary of the invention
To solve problems of the prior art, the utility model provides a kind of full-hole core acid-etched fracture guide energy
The real-time dynamics evaluation apparatus of power, its object is to the processing requests of short form test rock sample, and real simulation formation rock is in acid
Property fluid matasomatism under seam is high and the real-time dynamic changes of flow conductivity, to solve the test device and method of the prior art
The inefficient problem of acid corrosion fracture is evaluated, is the research and the evaluation of fracture acidizing flow conductivity of acidizing fracturing process
Research means are provided.
A kind of in order to achieve the above purposes, the technical solution adopted by the utility model is: full-hole core acid-etched fracture guide
The real-time dynamics evaluation apparatus of ability, including sequentially connected servo pressure charging system, core holding unit and flow measurement device；Institute
Stating core holding unit is rectangular parallelepiped structure, and the bottom surface of the rectangular parallelepiped structure is closed, and the top surface of the rectangular parallelepiped structure opens up square
Shape is open, and is cuboid hollow area between the corresponding bottom surface of the rectangular aperture, and the core holding unit is provided with
Full-hole core.
Preferably, the full-hole core is cylinder, and full-hole core is divided into two and half along its central plane
Cylindrical rock core, respectively rock core I and rock core II.Full-hole core is often referred to the rock taken out from stratum using CORING TECHNOLOGY
Whole section of rock core is used for laboratory and carries out cylindric rock core of the analysis measurement in relation to parameter by the heart without cutting.The utility model
Full-hole core is divided into two symmetrical semi-cylindrical rock cores, places gasket between two rock cores, to form crack, pad
The height of piece is fracture width.In order to save and maintain primitive character (including the surface, internal feature of full-hole core from damage
Deng), when segmentation, which tries one's best, reduces the risk for destroying rock core, usually using more advanced technologies such as wire cutting, laser cuttings.
In any of the above-described scheme preferably, placing between the plane of the rock core I and the plane of the rock core II can
Dissolubility gasket, it is described solubility gasket with a thickness of 0.8-1.5mm.Rubber material can be selected in soluble gasket.Soluble gasket
Shape be rectangle, size is consistent with the planar dimension of semi-cylindrical rock core；Can also select several it is equal sized can
Dissolubility cushion block is arranged between rock core I and rock core II.
In any of the above-described scheme preferably, mounting base and top in the hollow area inside the core holding unit
Plate, the bottom plate are located at the lower section of the top plate.
In any of the above-described scheme preferably, the length and width of the bottom plate length with the hollow area respectively
It is equal with width.
In any of the above-described scheme preferably, the top surface of the bottom plate opens up semi-cylindrical recesses I, in the groove I
It is put into semi-cylindrical rock core I.
In any of the above-described scheme preferably, the plane of the rock core I is higher by the edge of groove I, and the distance being higher by is
1.5-2.5mm, and be closed between the horizontal edge of rock core I and the edge of groove I using colloid.
In any of the above-described scheme preferably, the length and width of the top plate length with the hollow area respectively
It is equal with width.
In any of the above-described scheme preferably, the bottom surface of the top plate opens up semi-cylindrical recesses II, the groove II
Inside it is put into semi-cylindrical rock core II.
In any of the above-described scheme preferably, the plane of the rock core II is higher by the edge of groove II, the distance being higher by
For 1.5-2.5mm, and it is closed between the horizontal edge of rock core II and the edge of groove II using colloid.
In any of the above-described scheme preferably, card slot is arranged in surrounding of the top plate close to its top surface, in the card slot
Sealing ring is installed.
In any of the above-described scheme preferably, pressure plate is placed above the top plate, is placed and is watched above the pressure plate
Take press.
In any of the above-described scheme preferably, the top surface of the top plate is higher by the top surface of the core holding unit, is higher by
Distance be at least 5mm.
In any of the above-described scheme preferably, close to its bottom surface inside the pressure plate, and along its length with institute
It states the corresponding position in top plate both ends and a displacement sensor is respectively set, several are set between the displacement sensor at both ends
Displacement sensor.
In any of the above-described scheme preferably, the distance between two neighboring displacement sensor is the full-hole core
The 5-10% of length.
In any of the above-described scheme preferably, displacement measuring device is installed in one end of the pressure plate, and the displacement is surveyed
Amount device is connect with institute's displacement sensors.
In any of the above-described scheme preferably, the centre of the core holding unit two sides be respectively set import and
Outlet.
In any of the above-described scheme preferably, one end of the import is connect with the servo pressure charging system, it is described into
The other end of mouth passes through the gap area of horizontal diversion trench and the full-hole core.
In any of the above-described scheme preferably, one end of the outlet is connect with the flow measurement device, it is described out
The other end of mouth passes through the gap area of horizontal diversion trench and the full-hole core.
In any of the above-described scheme preferably, the diameter phase of the width and the full-hole core of the horizontal diversion trench
Together, the height of the horizontal diversion trench and the seam height of the full-hole core are identical.
The real-time dynamics evaluation apparatus of the full-hole core acid corrosion fracture of the utility model, is mainly used for acid etching
The test of fracture condudtiviy is evaluated, and both can simplify the processing request and step of test rock sample, can be with real simulation stratum
The high real-time dynamic rule with flow conductivity of seam of the rock under acidic fluid effect.The evaluating apparatus is led for acid-etched fracture
The research of stream ability provides new approaches, while also providing effectively evaluating method for the research of acidizing fracturing process.It is beneficial
Effect is specific as follows: (1) testing rock sample, the processing is simple, is hardly damaged rock sample, improves testing efficiency；(2) acid-etched fracture is being carried out
When simulation, even more closely true lithology, stress and the fracture pattern of layer, to study for a long period of time, flow conductivity mechanism is provided
It is effective to guarantee；(3) crack in acid corrosion process can be measured and stitch high real-time dynamic change, and then combination pressure and data on flows
The flow conductivity of dynamic evaluation acid-etched fracture；(4) it is provided for mechanics to be combined to progress fracture condudtiviy research with chemistry
New approaches, while also the evaluation study for the research of acidizing fracturing process and acid corrosion fracture provides effectively evaluating
Method.
Detailed description of the invention
Fig. 1 is according to the one of the real-time dynamics evaluation apparatus of the full-hole core acid corrosion fracture of the utility model
Preferred embodiment structural schematic diagram；
Fig. 2 is the figure according to the real-time dynamics evaluation apparatus of the full-hole core acid corrosion fracture of the utility model
The structural schematic diagram of the core holding unit of 1 illustrated embodiment；
Fig. 3 is the figure according to the real-time dynamics evaluation apparatus of the full-hole core acid corrosion fracture of the utility model
The structural diagram of base plate of 1 illustrated embodiment；
Fig. 4 is the figure according to the real-time dynamics evaluation apparatus of the full-hole core acid corrosion fracture of the utility model
The top board structure schematic diagram of 1 illustrated embodiment；
Fig. 5 is the figure according to the real-time dynamics evaluation apparatus of the full-hole core acid corrosion fracture of the utility model
The schematic diagram of the test rock sample of 1 illustrated embodiment.
Explanation is marked in figure:
1- servo pressure charging system；
2- core holding unit, the bottom surface 201-, the top surface 202-, 203- rectangular aperture, 204- hollow area, 205- bottom plate,
206- top plate, 207- groove I, 208- groove II；
3- flow measurement device；
4- full-hole core, 401- rock core I, 402- rock core II, 403- solubility gasket；
5- pressure plate, 501- displacement sensor；
6- servo press；
7- displacement measuring device；
8- import；
The outlet 9-；
The horizontal diversion trench of 10-.
Specific embodiment
In order to be further understood that the summary of the invention of the utility model, this reality is elaborated below in conjunction with specific embodiment
With novel.
Embodiment one:
As shown in Figs. 1-5, according to the real-time dynamic evaluation of the full-hole core acid corrosion fracture of the utility model
Device, including sequentially connected servo pressure charging system 1, core holding unit 2 and flow measurement device 3；The core holding unit 2 is
The bottom surface 201 of rectangular parallelepiped structure, the rectangular parallelepiped structure is closed, and the top surface 202 of the rectangular parallelepiped structure opens up rectangular aperture
203, it is cuboid hollow area 204, the core holding unit 2 between the corresponding bottom surface 201 of the rectangular aperture 203
It is provided with full-hole core 4.
The full-hole core 4 is cylinder, a diameter of 60mm, length 160mm.By full-hole core 4 along wherein
Heart plane is divided into two semi-cylindrical rock cores, respectively rock core I 401 and rock core II 402.The processing method of rock core is, straight
The end face at the cylindrical rock core both ends that diameter is 60mm, length is 160mm cut respectively one of depth be 3mm, width be 1mm slit
Mouthful, then rock core is placed on the loading bench of servo press vertically in two end face faces, uses press by the position of two gap
Pressure head applies pressure after contacting rock core downwards, until rock core is pressed into two sections.Full-hole core is obtained by conventional field coring operation
It arrives, it is only necessary to which testing experiment can be carried out by being pressed into two semicolumns from centre, without being processed into rock beam and arc-shaped end face.
In the present embodiment, full-hole core is divided into two symmetrical semi-cylindrical rock cores, is put between two rock cores
Gasket is set, to form crack, the height of gasket is fracture width.In order to save and maintain the primitive character of full-hole core from damage
(including surface, internal feature etc.), when segmentation, which tries one's best, reduces the risk for destroying rock core.
Soluble gasket 403 is placed between the plane of the rock core I 401 and the plane of the rock core II 402, it is described solvable
Property gasket 403 with a thickness of 0.8mm.Rubber material can be selected in soluble gasket.The shape of soluble gasket is rectangle, size
It is consistent with the planar dimension of semi-cylindrical rock core.
Mounting base 205 and top plate 206 in hollow area 204 inside the core holding unit 2, the bottom plate 205
In the lower section of the top plate 206.The length and width of the bottom plate 205 length and width with the hollow area 204 respectively
Equal, the top surface of the bottom plate 205 opens up semi-cylindrical recesses I 207, is put into semi-cylindrical rock core I in the groove I 207
401.The plane of the rock core I 401 is higher by the edge of groove I 207, and the distance being higher by is 1.5mm, and the flat edge of rock core I 401
It is closed between edge and the edge of groove I 207 using colloid.
The length and width of the top plate 206 is equal with the length and width of the hollow area 204 respectively, the top plate
206 bottom surface opens up semi-cylindrical recesses II 208, is put into semi-cylindrical rock core II 402 in the groove II 208.The rock core
II 402 plane is higher by the edge of groove II 208, and the distance being higher by is 1.5mm, and the horizontal edge and groove of rock core II 402
It is closed between II 208 edge using colloid.Card slot is arranged in surrounding of the top plate close to its top surface, and installation is close in the card slot
Seal.
Pressure plate 5 is placed above the top plate 206, places servo press 6 above the pressure plate 5.The top of the top plate
Face is higher by the top surface of the core holding unit, and the distance being higher by is 5mm.It is grown close to its bottom surface, and along it 5 inside of pressure plate
A displacement sensor 501, the displacement sensing at both ends is respectively set in degree direction position corresponding with 206 both ends of top plate
Several displacement sensors are set between device, and the distance between two neighboring displacement sensor is the full-hole core length
5%.Displacement measuring device 7 is installed in one end of the pressure plate 5, and institute's displacement measurement device 7 and institute's displacement sensors 501 connect
It connects.
Import 8 and outlet 9 is respectively set in the centre of 2 two sides of core holding unit.One end of the import 8 with
The servo pressure charging system 1 connects, the seam that the other end of the import 8 passes through horizontal diversion trench 10 and the full-hole core 4
Gap connection.One end of the outlet 9 is connect with the flow measurement device 3, and the other end of the outlet 9 passes through horizontal diversion trench
10 with the gap area of the full-hole core 4.The width of the horizontal diversion trench is not less than the diameter of the full-hole core,
The height of the horizontal diversion trench is high not less than the seam of the full-hole core.
In the present embodiment, top plate and bottom plate, horizontal diversion trench, import, outlet and connecting pipeline etc. are by Hastelloy system
At the material has stronger corrosion resistance, is not easy to be corroded by acidic fluid.
The real-time dynamics evaluation apparatus of the full-hole core acid corrosion fracture of the present embodiment, is mainly used for acid etching and splits
The test evaluation for stitching flow conductivity, both can simplify the processing request and step of test rock sample, can be with real simulation formation rock
The high real-time dynamic rule with flow conductivity of seam of the stone under acidic fluid effect.The evaluating apparatus is acid-etched fracture guide
The research of ability provides new approaches, while also providing effectively evaluating method for the research of acidizing fracturing process.Beneficial to effect
Fruit is specific as follows: (1) testing rock sample, the processing is simple, is hardly damaged rock sample, improves testing efficiency；(2) acid-etched fracture mould is being carried out
When quasi-, even more closely true lithology, stress and the fracture pattern of layer, to study for a long period of time, flow conductivity mechanism has been provided
The guarantee of effect；(3) crack in acid corrosion process can be measured and stitch high real-time dynamic change, and then combination pressure and data on flows are dynamic
The flow conductivity of state evaluation acid-etched fracture；(4) it is provided newly for mechanics to be combined to progress fracture condudtiviy research with chemistry
Thinking, while also the evaluation study for the research of acidizing fracturing process and acid corrosion fracture provides effectively evaluating side
Method.
Embodiment two:
According to the real-time dynamics evaluation apparatus of the full-hole core acid corrosion fracture of the utility model, device
Connection relationship, principle, beneficial effect between structure, each component etc. are the same as example 1, unlike: soluble gasket
With a thickness of 1.5mm；The plane of rock core I is higher by the edge of groove I, and the distance being higher by is 2.5mm；The plane of rock core II is higher by recessed
The edge of slot II, the distance being higher by are 2.5mm；The top surface of top plate is higher by the top surface of core holding unit, and the distance being higher by is 8mm；
The distance between two neighboring displacement sensor is the 10% of full-hole core length.
Embodiment three:
According to the real-time dynamics evaluation apparatus of the full-hole core acid corrosion fracture of the utility model, device
Connection relationship, principle, beneficial effect between structure, each component etc. are the same as example 1, unlike: soluble gasket
With a thickness of 1.0mm；The plane of rock core I is higher by the edge of groove I, and the distance being higher by is 2.0mm；The plane of rock core II is higher by recessed
The edge of slot II, the distance being higher by are 2.0mm；The top surface of top plate is higher by the top surface of core holding unit, and the distance being higher by is 10mm；
The distance between two neighboring displacement sensor is the 8% of full-hole core length.
Example IV:
According to the real-time dynamics evaluation apparatus of the full-hole core acid corrosion fracture of the utility model, device
Connection relationship, principle, beneficial effect between structure, each component etc. are the same as example 1, unlike: rock core I is put down
Arrange several equal sized soluble cushion blocks between face and the plane of rock core II, the distance between two neighboring cushion block can be with
Meaning setting.Two cushion blocks are at least placed, can make to form gap between the plane of rock core I and the plane of rock core II.
It will be apparent to those skilled in the art that the full-hole core acid corrosion fracture of the utility model is real-time dynamic
State evaluating apparatus include above-mentioned the utility model specification summary of the invention and specific embodiment part and attached drawing shown by
Each section any combination, retouch one by one as space is limited and for each scheme for keeping specification concise without constituting these combinations
It states.Within the spirit and principle of the utility model, any modification, equivalent substitution, improvement and etc. done should be included in this
Within the protection scope of utility model.
Claims (19)
1. a kind of real-time dynamics evaluation apparatus of full-hole core acid corrosion fracture, including the pressurization of sequentially connected servo
System, core holding unit and flow measurement device, it is characterised in that: the core holding unit is rectangular parallelepiped structure, described rectangular
The bottom surface of body structure is closed, and the top surface of the rectangular parallelepiped structure opens up rectangular aperture, the corresponding bottom surface of the rectangular aperture
Between be cuboid hollow area, the core holding unit is provided with full-hole core.
2. the real-time dynamics evaluation apparatus of full-hole core acid corrosion fracture as described in claim 1, feature exist
In: the full-hole core is cylinder, and full-hole core is divided into two semi-cylindrical rock cores along its central plane, respectively
For rock core I and rock core II.
3. the real-time dynamics evaluation apparatus of full-hole core acid corrosion fracture as claimed in claim 2, feature exist
In: mounting base and top plate in the hollow area inside the core holding unit, the bottom plate are located at the lower section of the top plate.
4. the real-time dynamics evaluation apparatus of full-hole core acid corrosion fracture as claimed in claim 3, feature exist
In: the length and width of the bottom plate is equal with the length and width of the hollow area respectively.
5. the real-time dynamics evaluation apparatus of full-hole core acid corrosion fracture as claimed in claim 4, feature exist
In: the top surface of the bottom plate opens up semi-cylindrical recesses I, and semi-cylindrical rock core I is put into the groove I.
6. the real-time dynamics evaluation apparatus of full-hole core acid corrosion fracture as claimed in claim 5, feature exist
Be higher by the edge of groove I in: the plane of the rock core I, the distance being higher by is 1.5-2.5mm, and the horizontal edge of rock core I with it is recessed
It is closed between the edge of slot I using colloid.
7. the real-time dynamics evaluation apparatus of full-hole core acid corrosion fracture as claimed in claim 3, feature exist
In: the length and width of the top plate is equal with the length and width of the hollow area respectively.
8. the real-time dynamics evaluation apparatus of full-hole core acid corrosion fracture as claimed in claim 7, feature exist
In: the bottom surface of the top plate opens up semi-cylindrical recesses II, and semi-cylindrical rock core II is put into the groove II.
9. the real-time dynamics evaluation apparatus of full-hole core acid corrosion fracture as claimed in claim 8, feature exist
The edge of groove II is higher by: the plane of the rock core II, and the distance being higher by is 1.5-2.5mm, and the horizontal edge of rock core II
It is closed between the edge of groove II using colloid.
10. the real-time dynamics evaluation apparatus of full-hole core acid corrosion fracture as claimed in claim 9, feature exist
In: card slot is arranged in surrounding of the top plate close to its top surface, installs sealing ring in the card slot.
11. the real-time dynamics evaluation apparatus of full-hole core acid corrosion fracture as claimed in claim 3, feature exist
In: pressure plate is placed above the top plate, places servo press above the pressure plate.
12. the real-time dynamics evaluation apparatus of full-hole core acid corrosion fracture as claimed in claim 11, feature
Be: the top surface of the top plate is higher by the top surface of the core holding unit, and the distance being higher by is at least 5mm.
13. the real-time dynamics evaluation apparatus of full-hole core acid corrosion fracture as claimed in claim 12, feature
Be: close to its bottom surface inside the pressure plate, and position corresponding with the top plate both ends is set respectively along its length
A displacement sensor is set, several displacement sensors are set between the displacement sensor at both ends.
14. the real-time dynamics evaluation apparatus of full-hole core acid corrosion fracture as claimed in claim 13, feature
Be: the distance between two neighboring displacement sensor is the 5-10% of the full-hole core length.
15. the real-time dynamics evaluation apparatus of full-hole core acid corrosion fracture as claimed in claim 14, feature
Be: one end installation displacement measuring device of the pressure plate, institute's displacement measurement device are connect with institute's displacement sensors.
16. the real-time dynamics evaluation apparatus of full-hole core acid corrosion fracture as claimed in claim 2, feature exist
In: inlet and outlet is respectively set in the centre of the core holding unit two sides.
17. the real-time dynamics evaluation apparatus of full-hole core acid corrosion fracture as claimed in claim 16, feature
Be: one end of the import is connect with the servo pressure charging system, and the other end of the import passes through horizontal diversion trench and institute
State the gap area of full-hole core.
18. the real-time dynamics evaluation apparatus of full-hole core acid corrosion fracture as claimed in claim 17, feature
Be: one end of the outlet is connect with the flow measurement device, and the other end of the outlet passes through horizontal diversion trench and institute
State the gap area of full-hole core.
19. the real-time dynamics evaluation apparatus of full-hole core acid corrosion fracture as claimed in claim 18, feature
Be: the width of the horizontal diversion trench is identical as the diameter of the full-hole core, the height of the horizontal diversion trench and institute
The seam height for stating full-hole core is identical.
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| CN201820817869.9U CN208476924U (en) | 2018-05-29 | 2018-05-29 | The real-time dynamics evaluation apparatus of full-hole core acid corrosion fracture |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108645999A (en) * | 2018-05-29 | 2018-10-12 | 中国石油大学(北京) | The real-time dynamics evaluation apparatus and method of full-hole core acid corrosion fracture |
| CN109958419A (en) * | 2019-03-13 | 2019-07-02 | 东北大学 | A kind of hydraulically created fracture flow conductivity experimental system and its application method |
-
2018
- 2018-05-29 CN CN201820817869.9U patent/CN208476924U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108645999A (en) * | 2018-05-29 | 2018-10-12 | 中国石油大学(北京) | The real-time dynamics evaluation apparatus and method of full-hole core acid corrosion fracture |
| CN108645999B (en) * | 2018-05-29 | 2023-08-22 | 中国石油大学(北京) | Real-time dynamic evaluation device and method for full-diameter rock core acid etching crack flow conductivity |
| CN109958419A (en) * | 2019-03-13 | 2019-07-02 | 东北大学 | A kind of hydraulically created fracture flow conductivity experimental system and its application method |
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