CN207488144U - The simple experimental device of computational fluid dynamics leak-off in a kind of monitoring rock sample - Google Patents
The simple experimental device of computational fluid dynamics leak-off in a kind of monitoring rock sample Download PDFInfo
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- CN207488144U CN207488144U CN201820057844.3U CN201820057844U CN207488144U CN 207488144 U CN207488144 U CN 207488144U CN 201820057844 U CN201820057844 U CN 201820057844U CN 207488144 U CN207488144 U CN 207488144U
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- pumped
- leak
- rock sample
- reaction kettle
- fluid dynamics
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Abstract
The utility model is related to a kind of simple experimental devices for monitoring computational fluid dynamics leak-off in rock sample, the device includes reaction kettle, is pumped into chamber, it is provided with above the reaction kettle and the matched cover board of reaction kettle outer diameter, the cover board offers centre bore, it is described to be pumped into chamber lower end outer diameter and the cover plate central bore dia is in mating connection, the bottom of chamber portion that is pumped into is connected with pit shaft, the pit shaft internal diameter and the bottom of chamber portion outer diameter that is pumped into are in mating connection, and the reaction kettle inner wall is symmetrical arranged multiple resistivity meters；The final dynamic monitoring for realizing fluid loss in rock sample under different displacements and fracturing fluid characteristic.
Description
Technical field
The utility model is related to a kind of monitoring technical fields of rock sample computational fluid dynamics leak-off, particularly a kind of to utilize resistivity
The simple experimental device of computational fluid dynamics leak-off in a kind of monitoring rock sample.
Background technology
During oil gas field and geothermal field exploitation and drilling, it is required for carrying out geologic characteristics, the correlation of mechanical characteristics
Research to formulate best development plan, Fracturing Project etc., is developed so as to fulfill high efficiency of energy, is increased economic efficiency.But work as
It is preceding for unconventional reservoir, one is exactly fracturing fluid leak an important factor for influencing reservoir reconstruction effect, particularly fracture hole type carbon
The fracturing fluid leak situation of Carbonate Reservoir or the shale gas reservoir of plane of weakness development.Currently to the monitoring device of fracturing fluid leak
Mostly it is to be injured caused by rock core by permeability test evaluation leak-off, it is impossible to directly monitor leak-off process, particularly become discharge capacity
Under dynamic filtration monitoring, it is also difficult to realize the dynamic simulation of fracturing fluid underground flowing.
Fracturing fluid leak characteristic be influence reservoir can reworked, reservoir mechanical property and transformation after effect assessment one
A key factor.And under the effect of reservoir, discharge capacity and fracturing fluid characteristic, leak-off intensity is different.Under normal circumstances, leak-off is tighter
Weight, pressure break liquid energy is overstepping the bounds of propriety to be dissipated, and I classes crack is more difficult to generate；Discharge capacity is bigger, and leak-off is more serious；Fracturing fluid viscosity is bigger, leak-off table
It is now weaker.Therefore different displacements are monitored, the dynamic filtration process under the conditions of different fracturing fluid viscosities is vital.State at present
The defects of inside having the experimental rig and method of some dynamic filtrations, but having its respectively.
The prior art one：
The first is fracturing fluid acidifying solution dynamic fluid loss test device.The fluids such as the unit simulation fracturing fluid and acidifying solution exist
Dynamic filtration process in stratum moves the crack wall surface during filtration model simulation leak-off, can be complete in the leak-off wall surface
Simulation dynamic filtration process and filter cake dynamic formation process.Liquid is evaluated by measuring the pressure change of difference on rock core
The depth and liquid of body intrusion rock core invade the injury caused by core permeability.However there are many more insufficient, examples for the equipment
Leak-off is mainly such as simulated by artificial leak-off wall surface, fracturing fluid is in addition simulated and is flowed for advection, can not be simulated true
Turbulent condition, in particular according to the depth of pressure change evaluation liquid intrusion rock core, it is difficult to which accurate inverting positioning, is realized three-dimensional
Leak-off leading edge monitors in real time.
The prior art two：
Another kind is fracturing fluid in the coalbed methane injury filtration device.The equipment is designed with the long rock core holder with pressure tap, can
Under conditions of simulated formation pressure, formation temperature, pass through the inlet outlet pressure differential for measuring rock core and the stream of liquid for flowing through rock core
Amount calculates rock core Test Liquid Permeability of Core according to Darcy's law, can also carry out sensitivity tests.The equipment operation is simple, but can not be straight
Monitoring fracturing fluid dynamic filtration is connect, in addition test equipment is limited by material, can not test the leak-off process of acid solution.
Utility model content
The technical solution that the utility model solves technical problem is to provide a kind of letter for monitoring computational fluid dynamics leak-off in rock sample
Easy experimental provision, the device can monitor dynamic filtration process of the fracturing fluid in different rock samples under different displacements and viscosity,
Fracturing fluid can be controlled to improve the timeliness and accuracy of leak-off monitoring in the fluidised form in shaft bottom simultaneously.Operating cost is low, and side
Just in-site measurement is analyzed.
In order to solve the above technical problems, technical solution is as follows used by the utility model：
A kind of simple experimental device for monitoring computational fluid dynamics leak-off in rock sample is provided, including reaction kettle, is pumped into chamber, reaction kettle
Top be provided with and offer centre bore with the matched cover board of reaction kettle outer diameter, cover board, be pumped into chamber lower end outer diameter in cover board
Heart bore dia is in mating connection, is pumped into bottom of chamber portion and is connected with pit shaft, pit shaft internal diameter is in mating connection with being pumped into bottom of chamber portion outer diameter, instead
Kettle inner wall is answered to be symmetrical arranged multiple resistivity meters.
As preference, symmetrical multiple threaded holes around cover board, symmetrical multiple resistivity meters draw around cover board
Wire casing.
As preference, being pumped into cavity wall upper surface is provided with electromagnetism mother rotor, the side of electromagnetism mother rotor is provided with electricity
Magnetic mother rotor wire lead slot.
As preference, pit shaft is internally provided with the sub- rotor of electromagnetism.
As preference, shaft in wall is additionally provided with seal groove.
As preference, being pumped into chamber lower end is provided with pressure gauge.
Hole is pumped into as preference, being pumped into chamber upper end and being provided with, reactor bottom is provided with recovery holes.
As preference, resistivity meter is also associated with outer computer.
The design principle of the utility model：
This equipment is recorded from different time points, no by the change in resistance between monitoring synistor rate instrument circuit
With the resistivity size of position, resistivity curve is drawn, judges the dynamic filtration process of fluid in rock sample；Change fracturing fluid class
On the one hand type, Mimicry acidifying process can draw resistivity curve, on the other hand, leak-off positioning is obtained according to resistivity curve
Point establishes digital cores, and the digital cores of different time points is spliced, and evaluates acid etching correctional effect.
The beneficial effects of the utility model：
A kind of simple experimental device for monitoring computational fluid dynamics leak-off in rock sample provided by the utility model has following excellent
Point：Device is simple, is applicable to on-the-spot test；Equipment establishes closed circuit follow-on test resistivity by multiple resistivity meters,
The resistivity size monitored by the resistivity meter of different time, different location can draw resistivity curve, be obtained with this
To dynamic filtration process；Fracturing fluid in equipment utilization electromagnetic rotor stirring pit shaft, controls fracturing fluid fluidised form, tests closer to true
State；Instrument lines are made of HC alloy materials, meet acid liquid loss test；Equipment can be changed by pump-in pressure control
Discharge capacity simulates true pump note program.
Description of the drawings
Fig. 1 is a kind of schematic diagram for monitoring the simple experimental device of computational fluid dynamics leak-off in rock sample of the utility model.
Fig. 2 is the structure diagram of Fig. 1 cover plates 2.
Fig. 3 is the structure diagram of pit shaft 3 in Fig. 1.
Fig. 4 is the structure diagram of reaction kettle 4 in Fig. 1.
Description of symbols：1st, be pumped into chamber, 2, cover board, 3, pit shaft, 4, reaction kettle, 5, electromagnetism mother rotor wire lead slot, 6, electromagnetism it is female
Rotor, 7, be pumped into hole, 8, pressure gauge, 9, the sub- rotor of electromagnetism, 10, recovery holes, 11, resistivity meter wire lead slot, 12, threaded hole, 13,
Seal groove, 14, resistivity meter.
Specific embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
It clearly and completely describes, it is clear that the described embodiments are only a part of the embodiments of the utility model rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work
All other embodiments obtained shall fall within the protection scope of the present invention.
Embodiment 1
Fig. 1 is a kind of schematic diagram for monitoring the simple experimental device of computational fluid dynamics leak-off in rock sample, including reaction kettle 4, is pumped into
Chamber 1, cover board 2 and pit shaft 3 are pumped into chamber 1 and are connect by cover board 2 with pit shaft 3, are provided for reaction kettle 4 and are pumped into fluid, reaction kettle 4
Top is provided with the cover board 2 identical with 4 outer diameter of reaction kettle, reaction kettle 4 with cover board 2 is in mating connection provides stabilization for whole device
Experiment porch, cover board 2 offers centre bore, and center-hole diameter is identical with being pumped into 1 lower end outer diameter of chamber, is pumped into chamber 1 and passes through cover board 2
The centre bore opened up is connected with cover board 2, is pumped into 1 bottom of chamber and is connected with pit shaft 3, is pumped into the interior of 1 bottom outer diameter of chamber and pit shaft 3
Diameter is identical, and is connected, more than connection will be pumped into chamber 1, cover board 2, pit shaft 3 and reaction kettle 4 and be connected as an entirety,
Form a stable experimental provision.
Such as Fig. 1~4,4 inner wall of reaction kettle is symmetrically embedded to be provided with 6 resistivity meters 14, establishes closed circuit and continuously surveys
Resistivity is tried, it is different by recording to measure rock sample resistivity size under different pressures state and different fluid state
The resistivity size that the monitoring of resistivity meter 14 of position, different time points obtains, can draw resistivity curve, what fluid flowed through
Part, resistivity can become smaller, therefore different moments curve can change, but not reach part for fluid, and curve will not
It changes, and then we may determine that leak-off process of the fluid at any time inside rock sample.
6 resistivity meter wire lead slots 11 are symmetrically arranged with around cover board 2, to provide electric energy and external to resistivity meter 14
Other equipment.Also symmetrical more 6 threaded holes 12, threaded hole 12 and 11 adjacent distributions of resistance instrument wire lead slot, screw thread on cover board 2
The setting in hole 12 passes through the seal groove 13 of 3 inner wall of pit shaft setting for cover board 2 and 4 profit of reaction kettle to be screwed, and will pump
Enter 1 bottom of chamber to be sealed by rubber ring with pit shaft 3, form the confined space of reaction kettle 4；It is pumped into the setting of 1 upper side of chamber
Be pumped into hole 7,4 bottom of reaction kettle is provided with recovery holes 10, be pumped into 1 inner wall upper surface middle position of chamber be provided with it is cylindrical small recessed
Slot is provided with electromagnetism mother rotor 6 cylindrical little groove is embedded, and the side of electromagnetism mother rotor 6 is provided with electromagnetism mother rotor and draws
Wire casing 5 is additionally provided with the sub- rotor 9 of electromagnetism inside pit shaft 3, is pumped into chamber 1 and installs pressure gauge 8 with 2 junction of cover board.
During experiment, test pressure value as needed selects pump-in pressure, and the fluid type of needs is pumped by being pumped into hole 7
To being pumped into chamber 1, enter pit shaft 3 by being pumped into 1 lower end fluid of chamber and penetrate into reaction kettle 4, recycled finally by recovery holes 10
Fluid, electromagnetism mother rotor 6, which is powered, to be rotated, and the sub- rotor 9 of electromagnetism is driven to rotate by electromagnetic induction, is generated the effect of stirring, is controlled
Fluid flow state processed so that test scene is closer to real fluid state；The pressure value measured by pressure gauge 8 is more accurately controlled
Pump-in pressure processed, thus it is possible to vary discharge capacity simulates true pump note program.
Embodiment 2
In specific embodiment, first, pit shaft 3 is fixed in the rock sample central bore of selection, and with epoxy resin
In rock sample eyelet, sample can be cut into the circle of certain size by the rock sample of selection by acquiring live rock sample to be measured
Column can be the cylinder sample of 50 × 25cm of φ, to be closed, and the lower planes of rock sample are put down with the matching size of reaction kettle 4
Whole degree processing；Then couplant is coated on six 14 surfaces of resistivity meter installed in reaction kettle 4, increases measurement accuracy；Again will
In rock sample merging 4 middle circle wall cylinder of reaction kettle, and the sub- rotor 9 of electromagnetism is placed in pit shaft 3；Cover board 2 is connect with being pumped into chamber 1,
Then the bottom for being pumped into chamber 1 and pit shaft 3 are coordinated again, covers cover board 2, and fixed with hex screw；Hole 7 and recycling will be pumped into
According to site operation parameter pump-in pressure has been calculated and determined, and select accordingly according to site operation situation in 10 connecting pipeline of hole
Fracturing fluid property；Electromagnetism mother rotor 6 and 14 lead of resistivity meter are connected with the mains by wire lead slot, resistivity meter 14 needs shape
Into closed circuit；Preferably implement resistivity meter 14 be connected outer computer, convenient for preferably recording with observing data,
In the resistivity size variation that computer terminal synchronous recording different resistivity instrument 14 receives, pass through different location coordinate, difference
The resistivity meter 14 at time point monitors obtained resistivity size, and the resistance at each moment can be drawn by computer or manually
Rate curve, and the resistivity curve of different time, different location is compared, the part that fluid flows through, resistivity can become smaller, therefore not
Curve can change in the same time, but not reach part for fluid, and curve will not change, and then we may determine that
The fluid leak-off process inside rock sample at any time.
Embodiment 3
A kind of acid etching of simple experimental device evaluation digital cores for monitoring computational fluid dynamics leak-off in rock sample can also be utilized
Pit shaft 3 first in the rock sample central bore of selection, and is fixed in rock sample eyelet, the rock sample of selection by process with epoxy resin
Sample can be cut into the cylinder of certain size, can be 50 × 25cm of φ by acquiring live rock sample to be measured
Cylinder sample to be closed with the matching size of reaction kettle 4, and carries out flatness processing to the lower planes of rock sample；Pacify in reaction kettle 4
Couplant is coated on six 14 surfaces of resistivity meter of dress, increases measurement accuracy；Rock sample is placed in 4 middle circle wall cylinder of reaction kettle,
And the sub- rotor 9 of electromagnetism is placed in pit shaft 3；Cover board 2 with being pumped into chamber 1 is connect, then will be pumped into the bottom of chamber 1 and pit shaft 3 again
Cooperation, covers cover board 2, and fixed with hex screw；10 connecting pipeline of hole 7 and recovery holes will be pumped into, will be joined according to site operation
Pump-in pressure has been calculated and determined in number, and selects corresponding acid solution property according to site operation situation, and pipeline is by HC alloy materials
It is made, meets acid liquid loss test request；Electromagnetism mother rotor 6 and 14 lead of resistivity meter are connected with the mains by wire lead slot, electricity
Resistance rate instrument 14 needs to form closed circuit；Preferably implement resistivity meter 14 be connected outer computer, convenient for better
Record and observation data, in the resistivity size variation that computer terminal synchronous recording different resistivity instrument 14 receives, by not
The resistivity size that the monitoring of resistivity meter 14 of same position coordinates, different time points obtains, can paint by computer or manually
The resistivity curve at each moment is made, leak-off anchor point can be obtained, and establish digital cores by comparison, by different time points
Digital cores splicing, formed dynamic acid corrosion process digital cores, evaluate acid etching effect.
Three-dimensional leak-off Dynamic Graph can also be established according to resistivity curve by outer computer, anchor point is then exported and sit
The graphics changed over time is marked, more intuitively observes dynamic filtration process；It can be more directly by three-dimensional leak-off Dynamic Graph
It obtains leak-off anchor point and establishes digital cores, more intuitively evaluate acid etching effect.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned exemplary embodiment, and
And in the case of the spirit or essential attributes without departing substantially from the utility model, it can realize that this practicality is new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this practicality is new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that by containing in the equivalent requirements of the claims is fallen
All changes in justice and range are embraced therein.Any reference numeral in claim should not be considered as limitation
Involved claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in each embodiment can also be properly combined, forms those skilled in the art
The other embodiment being appreciated that.
Claims (8)
1. a kind of simple experimental device for monitoring computational fluid dynamics leak-off in rock sample, it is characterised in that：Including reaction kettle, chamber is pumped into,
Be provided with above the reaction kettle with the matched cover board of reaction kettle outer diameter, the cover board offers centre bore, described
It is pumped into chamber lower end outer diameter and the cover plate central bore dia is in mating connection, the bottom of chamber portion that is pumped into is connected with pit shaft, the well
Cylinder internal diameter and the bottom of chamber portion outer diameter that is pumped into are in mating connection, and the reaction kettle inner wall is symmetrical arranged multiple resistivity meters.
2. a kind of simple experimental device for monitoring computational fluid dynamics leak-off in rock sample according to claim 1, it is characterised in that：
Symmetrical multiple threaded holes and multiple resistivity meter wire lead slots around the cover board.
3. a kind of simple experimental device for monitoring computational fluid dynamics leak-off in rock sample according to claim 1, it is characterised in that：
The cavity wall upper surface that is pumped into is provided with electromagnetism mother rotor, and the side of the electromagnetism mother rotor is provided with electromagnetism mother rotor lead
Slot.
4. a kind of simple experimental device for monitoring computational fluid dynamics leak-off in rock sample according to claim 3, it is characterised in that：
The pit shaft is internally provided with the sub- rotor of electromagnetism.
5. a kind of simple experimental device for monitoring computational fluid dynamics leak-off in rock sample according to claim 1, it is characterised in that：
The shaft in wall is provided with seal groove.
6. a kind of simple experimental device for monitoring computational fluid dynamics leak-off in rock sample according to claim 1, it is characterised in that：
The chamber lower end that is pumped into is provided with pressure gauge.
7. a kind of simple experimental device for monitoring computational fluid dynamics leak-off in rock sample according to claim 1, it is characterised in that：
It is described be pumped into chamber upper end and be provided be pumped into hole, the reactor bottom is provided with recovery holes.
8. a kind of simple experimental device for monitoring computational fluid dynamics leak-off in rock sample according to claim 1, it is characterised in that：
The resistivity meter is also associated with outer computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820057844.3U CN207488144U (en) | 2018-01-15 | 2018-01-15 | The simple experimental device of computational fluid dynamics leak-off in a kind of monitoring rock sample |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820057844.3U CN207488144U (en) | 2018-01-15 | 2018-01-15 | The simple experimental device of computational fluid dynamics leak-off in a kind of monitoring rock sample |
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| Publication Number | Publication Date |
|---|---|
| CN207488144U true CN207488144U (en) | 2018-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820057844.3U Expired - Fee Related CN207488144U (en) | 2018-01-15 | 2018-01-15 | The simple experimental device of computational fluid dynamics leak-off in a kind of monitoring rock sample |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107991220A (en) * | 2018-01-15 | 2018-05-04 | 北京市地热研究院 | The simple experimental device and method of hydrodynamic leak-off in a kind of monitoring rock sample |
| CN114136864A (en) * | 2021-12-24 | 2022-03-04 | 国家能源集团宁夏煤业有限责任公司 | Coal rock permeability determination method, storage medium and system |
-
2018
- 2018-01-15 CN CN201820057844.3U patent/CN207488144U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107991220A (en) * | 2018-01-15 | 2018-05-04 | 北京市地热研究院 | The simple experimental device and method of hydrodynamic leak-off in a kind of monitoring rock sample |
| CN114136864A (en) * | 2021-12-24 | 2022-03-04 | 国家能源集团宁夏煤业有限责任公司 | Coal rock permeability determination method, storage medium and system |
| CN114136864B (en) * | 2021-12-24 | 2023-12-08 | 国家能源集团宁夏煤业有限责任公司 | Method, storage medium and system for determining permeability of coal and rock |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180612 Termination date: 20190115 |