CN106546527A - For measuring the permeameter of rock permeability - Google Patents
For measuring the permeameter of rock permeability Download PDFInfo
- Publication number
- CN106546527A CN106546527A CN201611057779.6A CN201611057779A CN106546527A CN 106546527 A CN106546527 A CN 106546527A CN 201611057779 A CN201611057779 A CN 201611057779A CN 106546527 A CN106546527 A CN 106546527A
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- Prior art keywords
- rock
- liquid
- tee
- supply box
- permeameter
- Prior art date
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- Granted
Links
- 239000011435 rock Substances 0.000 title claims abstract description 141
- 230000035699 permeability Effects 0.000 title claims abstract description 25
- 239000007788 liquid Substances 0.000 claims abstract description 175
- 238000007789 sealing Methods 0.000 claims abstract description 44
- 238000009434 installation Methods 0.000 claims abstract description 29
- 230000000712 assembly Effects 0.000 claims abstract description 23
- 238000000429 assembly Methods 0.000 claims abstract description 23
- 239000002184 metal Substances 0.000 claims abstract description 21
- 238000012360 testing method Methods 0.000 claims abstract description 21
- 238000001727 in vivo Methods 0.000 claims abstract description 6
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 239000012530 fluid Substances 0.000 claims description 26
- 230000009469 supplementation Effects 0.000 claims description 16
- 238000001802 infusion Methods 0.000 claims description 15
- 230000035515 penetration Effects 0.000 claims description 11
- 230000003139 buffering effect Effects 0.000 claims description 8
- 230000013011 mating Effects 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 11
- 238000005259 measurement Methods 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011026 diafiltration Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 210000001215 vagina Anatomy 0.000 description 1
Classifications
-
- 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
- G01N15/082—Investigating permeability by forcing a fluid through a sample
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
Abstract
This application discloses a kind of permeameter for measuring rock permeability, including rock clamp assemblies, rock clamp assemblies include：Body；Rock installed part, including resilient sleeve and metal installation set, resilient sleeve are used to install rock to be tested, and metal installation set is inlaid on body；Two are pressed cover clamp, are screwed onto the both sides of body respectively, are coordinated by medial wall screw thread of the cover clamp with body, and the outer peripheral face for stretching into body end by cover clamp is sealed against with corresponding metal installation set.Resilient sleeve has elasticity, preferably can hold onto rock to be tested, it is ensured that the sealing of rock side wall, and when preventing test, liquid is flowed out from rock side wall, resilient sleeve and rock can be arranged on this in vivo by two metal installation sets.
Description
Technical field
The present invention relates to permeability survey equipment, and in particular to for measuring the permeameter of rock permeability.
Background technology
One oil-gas reservoir is in addition to the ability for possessing oil in reserve, gas, it is necessary under the effect of the pressure, and oil, gas can be allowed to exist
Seepage flow in rock, this is the essential condition of Reservoir Development.Rock permeability is exactly that fluid is percolated capacity of water by rock
Measure.
1856, French engineer's darcy have studied the diafiltration of water using artificial sand body, so as to establish Darcy's law, its
In, liquid is surveyed the Darcy formula of permeability and is：
In formula, k is rock permeability, and flows of the Q for liquid, μ are fluid viscosity, and L is rock length, and A is rock section
Product, p1For rock inlet pressure, p2For rock outlet pressure.
The key factor for affecting permeability test accuracy is that liquid is flowed between the lateral wall of rock style in test
Go out, that is, so-called " side leakage " phenomenon occur, in the event of such case, result of the test can be substantially bigger than normal, loses verity, if
Send side leakage phenomenon to be determined by rock clamp assemblies, but the sealing structure reliability of existing rock clamp assemblies is poor, meeting
Side leakage phenomenon is susceptible to when being not especially smooth to rock specimens periphery.
The content of the invention
The present invention is directed to the problems referred to above, overcomes deficiency, it is proposed that a kind of permeameter for measuring rock permeability.
The technical scheme that the present invention takes is as follows：
A kind of permeameter for measuring rock permeability, including penetration testing mechanism, the penetration testing mechanism include
Rock clamp assemblies, the rock clamp assemblies include：
The body of the tubbiness of both ends open；
Hollow rock installed part, is arranged on this in vivo, and rock installed part includes resilient sleeve and is arranged on resilient sleeve two
The metal installation set at end, the resilient sleeve are used to install rock to be tested, and the metal installation set is inlaid in this by sealing ring
On the medial wall of body；
Two are pressed cover clamp, are separately positioned on the both sides of body, are coordinated by medial wall screw thread of the cover clamp with body, pressing
Cover plate is stretched into the outer peripheral face of body end and is sealed against with corresponding metal installation set；
Two are respectively feed liquor cover plate by cover clamp and go out liquid cover plate, and two cover plates include cover board body, cover plate sheet
Portion has cushion chamber in vivo, and cover board body has a logical liquid main aperture away from the side of rock installed part, leads to
There is pipe joint, cover board body is evenly equipped with multiple logical liquid point holes towards the side of rock installed part；The logical liquid main aperture and logical liquid
Divide the connection of Kong Junyu cushion chambers, the cushion chamber is cylindric, and the internal diameter of cushion chamber is identical with resilient sleeve internal diameter；
The buffering intracavity of the feed liquor cover plate is provided with inlet hydraulic sensor, it is described go out liquid cover plate buffering intracavity install
There is fluid pressure sensor.
Resilient sleeve has elasticity, preferably can hold onto rock to be tested, it is ensured that the sealing of rock side wall, prevent
During test, liquid is flowed out from rock side wall, resilient sleeve and rock can be arranged on this in vivo by two metal installation sets；Two
It is individual to be used for pressing the both sides of rock installed part respectively by cover clamp, coordinate with body screw thread by cover clamp, can conveniently press gland
The dismounting of plate, and ensure the fiting effect after assembling；Can make liquid sufficiently from whole logical liquid by the cushion chamber of cover clamp
Hole is divided to flow in rock, it is ensured that measurement effect；By the inlet hydraulic sensor and fluid pressure sensing that are arranged on buffering intracavity
Device, can be convenient and reliable obtain rock inlet pressure and rock outlet pressure.
Optionally, the medial wall of the body has the mounting groove of annular, and metal installation set includes taper portion and straight
Portion, centrage of the flat part perpendicular to body, the miner diameter end of taper portion are connected with the outer ring of flat part, the two ends of resilient sleeve
Fix with the inner ring of corresponding flat part respectively, the bigger diameter end of taper portion has the lobe for stretching into mounting groove, the periphery of lobe
Sealing ring is installed, lobe is coordinated with mounting groove sealing by sealing ring, flat part is towards being provided with by the side of cover clamp
Sealing ring, the sealing ring of flat part are positioned close to the side of resilient sleeve.
Lobe can be realized reliably sealing cooperation with mounting groove by sealing ring, and by mounting groove and lobe
Coordinate, the position of rock installed part can be limited；When the version of taper portion and flat part causes to screw in by cover clamp, can
There is preferable load effect, and the sealing ring on flat part is ensure that by the sealing between cover clamp and flat part, is prevented
Liquid from press in the gap between cover clamp end face and flat part flow out.
Optionally, ring pressure chamber is constituted between the lateral wall of rock installed part and body medial wall, this body sidewall has and ring
The passage of pressure chamber connection, ring pressure intracavity are provided with ring pressure pressure sensor.
Sealing between rock installed part and body medial wall coordinates, and they surround the ring pressure chamber of a sealed reliable, pass through
The gas of certain pressure is passed through to passage such that it is able to which the outer wall of resilient sleeve is pressed so that resilient sleeve is with rock more
Good laminating, it is ensured that have better seal effect；Ring pressure pressure sensor is set in ring pressure intracavity, ring pressure intracavity can be monitored
Pressure, so as to control to flow into the gas flow in passage.
Optionally, also including liquid supplying device, the liquid supplying device is included for the drain pipe to rock clamp assemblies feed flow；
The penetration testing mechanism also include the first tee T, the second tee T, dioxide bottle, vacuum extractor with
And magnetoelectric flowmeter；
The first end of the first tee T is connected with the drain pipe of liquid supplying device, the second end of the first tee T and feed liquor
The pipe joint connection of cover plate, the 3rd end of the first tee T is connected with dioxide bottle by pipeline, and the first tee T
The pipeline that is connected with dioxide bottle of the 3rd end on electromagnetic valve is installed；
The dioxide bottle is connected with passage by pipeline, and the pipeline that dioxide bottle is connected with passage
On electromagnetic valve is installed；
It is described go out the pipe joint of liquid cover plate be connected with the first end of magnetoelectric flowmeter, the first end of second tee T
Be connected with the second end of magnetoelectric flowmeter, the second end of the second tee T is provided with electromagnetic valve, the 3rd end of the second tee T with
Vacuum extractor connects, and is provided with electromagnetic valve on the pipeline that the 3rd end of the second tee T is connected with vacuum extractor.
By arranging dioxide bottle so that carbon dioxide gass can not only press interacvity air-filling to ring, and resilient sleeve is applied
Pressure, it is ensured that the sealing between rock and resilient sleeve, can be inflated to the rock in rock installed part again；By arranging magnetoelectricity stream
Gauge so that in test, can conveniently calculate from rock the flow of the liquid for flowing out；By arranging vacuum means
Put, coordinate dioxide bottle, evacuation can be carried out to rock, ensure that tested rock is that single-phase liquid is fully saturated.
Optionally, the liquid supplying device also includes：
Base；
Liquid supply box, is arranged on base by support bar, and liquid supply box is fixed on the top of support bar；
Baffle-box, in liquid supply box, is relatively fixed with liquid supply box, and baffle-box includes the baffle-box body of upper end open,
Outside baffle-box body upper end, circumferentially direction is provided with rake, and the rake is downward-sloping away from one end of body；
Fluid infusion case, is relatively fixed with base, and fluid infusion case is located at the top of liquid supply box,
Liquid supplementation pipe, one end are connected with fluid infusion bottom end, and the other end stretches into the bottom of liquid supply box, and electricity is also equipped with liquid supplementation pipe
Magnet valve；
Liquid level sensor, is arranged in liquid supply box for perceiving the liquid level of liquid supply box；
Described drain pipe one end is connected with the bottom of liquid supply box, and the other end is coordinated with rock clamp assemblies, for rock
Clamp assemblies feed flow, is provided with electromagnetic valve on the drain pipe；
Controller, is electrically connected with electromagnetic valve and liquid level sensor, the signal of controller reception liquid level sensor, and according to
The signal of liquid level sensor controls the electromagnetic valve work of liquid supplementation pipe.
When drain pipe can to rock clamp assemblies feed flow when, the liquid level of liquid supply box declines, and liquid level sensor detects letter
After number, the controller that liquid surveys formula permeameter is sent to, the electromagnetic valve controlled so as to controller in liquid supplementation pipe is opened, by fluid infusion case
Liquid be delivered in liquid supply box, when liquid reaches setting position, the signal for receiving is sent to control by liquid level sensor
Device, the closed electromagnetic valve in controller control liquid supplementation pipe, by the cooperation of liquid level sensor and electromagnetic valve, can realize automatically may be used
The feed flow for leaning on, so that the liquid level of liquid supply box is in setting position；Outside baffle-box body upper end, circumferentially direction is provided with and inclines
Inclined portion, rake are downward-sloping away from one end of body, and liquid supplementation pipe stretches into the bottom of liquid supply box, and this structure can make buffering
Liquid in case is gentle to be flowed in liquid supply box by rake, effectively avoids liquid in liquid supply box from producing larger fluctuation, energy
Enough strengthen certainty of measurement.
Optionally, fluid infusion bottom portion can also arrange heater strip, liquid can be heated by heater strip, can subtract
The air dissolved in few liquid.
Optionally, rake range of tilt angles with respect to the horizontal plane is：5 °～30 °.In this angular range, liquid
Body can be gentle fall in liquid supply box.
Optionally, liquid supplying device also includes adjusting rod and connecting rod, and the adjusting rod is fixed on base, the connection
Bar one end is fixed with liquid supply box, and other end slip location and installation is on adjusting rod.
One end slip location and installation of connecting rod refers to connecting rod on adjusting rod and can slide up and down along adjusting rod, and
Can be fixed on adjusting rod by locking mechanism after adjusting in place.
Optionally, the connecting rod is L-type.
The structure of L-type facilitates the installation of baffle-box, is difficult to interfere when position is debugged.
Optionally, the support bar is liftable support bar.
The design of liftable support bar can significantly adjust the position of liquid supply box, and then can significantly adjust rock
Inlet pressure.
Optionally, the body includes two splits being hinged, and is provided with sealing member between the mating surface of two splits, point
Body is abutted and is fixed by securing member away from one end fixed part with fixed part, two splits of hinged place.
Split is hinged and can facilitate the dismounting of body, when ensure that two splits are combined by sealing member,
There is between joint face preferable sealing effectiveness；This version of body, can facilitate installation and the dimension of rock installed part
Shield.
The invention has the beneficial effects as follows：Resilient sleeve has elasticity, preferably can hold onto rock to be tested, it is ensured that rock
The sealing of stone side wall, when preventing test, liquid is flowed out from rock side wall, by two metal installation sets can by resilient sleeve and
Rock is arranged on this in vivo；Pressing cover clamp for two is used to press the both sides of rock installed part respectively, by cover clamp and body screw thread
Coordinate, can conveniently press the dismounting of cover clamp, and ensure the fiting effect after assembling；Liquid can be made by the cushion chamber of cover clamp
Sufficiently flow in rock from whole logical liquid point holes, it is ensured that measurement effect；Passed by being arranged on the inlet hydraulic of buffering intracavity
Sensor and fluid pressure sensor, can be convenient and reliable obtain rock inlet pressure and rock outlet pressure.
Description of the drawings：
Fig. 1 is the sectional view of rock clamp assemblies；
Fig. 2 is the side view of rock clamp assemblies；
Fig. 3 is the sectional view of rock installed part；
Fig. 4 is the schematic diagram for measuring the permeameter of rock permeability.
In figure, each reference is：
1st, liquid supplying device；2nd, penetration testing mechanism；3rd, base；4th, adjusting rod；5th, support bar；6th, liquid supply box；7th, baffle-box
Body；8th, rake；9th, connecting rod；10th, the first electromagnetic valve；11st, liquid supplementation pipe；12nd, fluid infusion case；13rd, liquid level sensor；14th, go out
Liquid pipe；15th, the second electromagnetic valve；16th, the 3rd electromagnetic valve；17th, the first tee T；18th, pipe joint；19th, dioxide bottle；
20th, feed liquor cover plate；21st, rock；22nd, rock installed part；23rd, the 4th electromagnetic valve；24th, ring pressure pressure sensor；25th, body；26、
Go out liquid cover plate；27th, vacuum extractor；28th, the 6th electromagnetic valve；29th, the 5th electromagnetic valve；30th, the second tee T；31st, magnetoelectricity flow
Meter；32nd, fluid pressure sensor；33rd, inlet hydraulic sensor；34th, lead to liquid point hole；35th, lead to liquid main aperture；36th, cushion chamber；37、
Second sealing ring；38th, the first sealing ring；39th, mounting groove；40th, metal installation set；41st, resilient sleeve；42nd, passage；43rd, ring pressure
Chamber；44th, lobe；45th, taper portion；46th, flat part；47th, split；48th, securing member；49th, fixed part.
Specific embodiment：
With reference to each accompanying drawing, the present invention is described in detail.
As shown in figure 4, a kind of permeameter for measuring rock permeability, including penetration testing mechanism 2, penetration testing machine
Structure 2 includes rock clamp assemblies, and as illustrated in fig. 1 and 2, rock clamp assemblies include：
The body 25 of the tubbiness of both ends open；
Hollow rock installed part 22, is arranged in body 25, and rock installed part 22 includes resilient sleeve 41 and is arranged on
The metal installation set 40 at 41 two ends of resilient sleeve, resilient sleeve 41 are used to install rock to be tested 21, and metal installation set 40 passes through first
Sealing ring 38 is inlaid on the medial wall of body 25；
Two are pressed cover clamp, are separately positioned on the both sides of body 25, are coordinated by medial wall screw thread of the cover clamp with body 25,
The outer peripheral face that 25 end of body is stretched into by cover clamp is sealed against with corresponding metal installation set 40；
Two are respectively feed liquor cover plate 20 by cover clamp and go out liquid cover plate 26, and two cover plates include cover board body 25,
There is inside cover board body 25 cushion chamber 36, cover board body 25 has a logical liquid main aperture away from the side of rock installed part 22
35, pipe joint 18 is installed on logical liquid main aperture 35, cover board body 25 is evenly equipped with multiple logical towards the side of rock installed part 22
Liquid point hole 34；Logical liquid main aperture 35 and logical liquid point hole 34 are connected with cushion chamber 36, cushion chamber 36 for cylindric, cushion chamber 36 it is interior
Footpath is identical with 41 internal diameter of resilient sleeve；
Inlet hydraulic sensor 33 is installed in the cushion chamber 36 of feed liquor cover plate 20, goes out peace in the cushion chamber 36 of liquid cover plate 26
Equipped with fluid pressure sensor 32.
Resilient sleeve 41 has elasticity, preferably can hold onto rock to be tested 21, it is ensured that the sealing of 21 side wall of rock
Property, when preventing test, liquid is flowed out from 21 side wall of rock, can be by resilient sleeve 41 and rock 21 by two metal installation sets 40
In body 25；Pressing cover clamp for two is used to press the both sides of rock installed part 22 respectively, by cover clamp and 25 spiral shell of body
Stricture of vagina coordinates, and can conveniently press the dismounting of cover clamp, and ensure the fiting effect after assembling；Can make by the cushion chamber 36 of cover clamp
Liquid is sufficiently flowed in rock 21 from whole logical liquid point holes 34, it is ensured that measurement effect；By being arranged in cushion chamber 36
Inlet hydraulic sensor 33 and fluid pressure sensor 32, can be convenient and reliable obtain 21 inlet pressure of rock and rock 21 goes out
Mouth pressure.
As illustrated in fig. 1 and 2, in the present embodiment, the medial wall of body 25 has the mounting groove 39 of annular, metal installation set
40 include taper portion 45 and flat part 46, centrage of the flat part 46 perpendicular to body 25, the miner diameter end of taper portion 45 with it is flat
The outer ring connection in straight portion 46, the two ends of resilient sleeve 41 are fixed with the inner ring of corresponding flat part 46 respectively, the bigger diameter end of taper portion 45
With the lobe 44 for stretching into mounting groove 39, the periphery of lobe 44 is provided with the first sealing ring 38, and lobe 44 passes through first
Sealing ring 38 is coordinated with the sealing of mounting groove 39, and flat part 46 is provided with the second sealing ring 37 towards by the side of cover clamp, straight
Second sealing ring 37 in portion 46 is positioned close to the side of resilient sleeve 41.
Lobe 44 can be realized coordinating with 39 reliable sealing of mounting groove by the first sealing ring 38, and pass through mounting groove
39 and the cooperation of lobe 44, the position of rock installed part 22 can be limited；The version of taper portion 45 and flat part 46 makes
When must screw in by cover clamp, there can be preferable load effect, and the second sealing ring 37 on flat part 46 ensure that pressing
Sealing between cover plate and flat part 46, prevents liquid from by outflow in the gap between cover clamp end face and flat part 46.
As shown in figure 1, in the present embodiment, ring pressure is constituted between 25 medial wall of lateral wall and body of rock installed part 22
Chamber 43,25 side wall of body are provided with ring pressure pressure sensor 24 in ring pressure chamber 43 with the passage 42 connected with ring pressure chamber 43.
Sealing between 25 medial wall of rock installed part 22 and body coordinates, and they surround the ring pressure chamber of a sealed reliable
43, by the gas that certain pressure is passed through to passage 42 such that it is able to which the outer wall of resilient sleeve 41 is pressed so that elasticity
Set 41 is preferably fitted with rock 21, it is ensured that have better seal effect；In ring pressure chamber 43, ring pressure pressure sensor 24 is set,
The pressure in ring pressure chamber 43 can be monitored, so as to control to flow into the gas flow in passage 42.
As shown in figure 3, in the present embodiment, body 25 includes two splits 47 being hinged, the mating surface of two splits 47
Between sealing member is installed, split 47 has fixed part 49 away from one end of hinged place, and the fixed part 49 of two splits 47 is mutual
Against and fixed by securing member 48.Split 47 is hinged and can facilitate the dismounting of body 25, ensure that by sealing member
When two splits 47 are combined, there is between joint face preferable sealing effectiveness；This version of body 25, Neng Goufang
Just the installation and maintenance of rock installed part 22.
As shown in figure 4, the permeameter for measuring rock permeability also includes liquid supplying device 1, liquid supplying device 1 includes：
Base 3；
Liquid supply box 6, is installed on the base 3 by support bar 5, and liquid supply box 6 is fixed on the top of support bar 5；
Baffle-box, in liquid supply box 6, is relatively fixed with liquid supply box 6, and baffle-box includes the baffle-box body of upper end open
7, outside 7 upper end of baffle-box body, circumferentially direction is provided with rake 8, and rake 8 is downward-sloping away from one end of body 25；
Fluid infusion case 12, is relatively fixed with base 3, and fluid infusion case 12 is located at the top of liquid supply box 6,
Liquid supplementation pipe 11, one end are connected with 12 bottom of fluid infusion case, and the other end stretches into the bottom of liquid supply box 6, in liquid supplementation pipe 11 also
First electromagnetic valve 10 is installed；
Liquid level sensor 13, is arranged in liquid supply box 6 for perceiving the liquid level of liquid supply box 6；
Drain pipe 14, one end are connected with the bottom of liquid supply box 6, and the other end is coordinated with rock clamp assemblies, for rock
Clamp assemblies feed flow, is provided with the second electromagnetic valve 15 on drain pipe 14；
Controller, is electrically connected with electromagnetic valve and liquid level sensor, the signal of controller reception liquid level sensor, and according to
The signal of liquid level sensor controls the electromagnetic valve work of liquid supplementation pipe.
When drain pipe 14 can to rock clamp assemblies feed flow when, the liquid level of liquid supply box 6 declines, and liquid level sensor 13 is detected
To after signal, the controller that liquid surveys formula permeameter is sent to, so as to controller controls the first electromagnetic valve 10 dozens in liquid supplementation pipe 11
Open, the liquid in fluid infusion case 12 is delivered in liquid supply box 6, when liquid reaches setting position, liquid level sensor 13 will be received
To signal be sent to controller, the first electromagnetic valve 10 in controller control liquid supplementation pipe 11 cuts out, by liquid level sensor 13
With the cooperation of the first electromagnetic valve 10, reliable feed flow automatically can be realized, so that the liquid level of liquid supply box 6 is in setting position；
Outside 7 upper end of baffle-box body, circumferentially direction is provided with rake 8, and rake 8 is downward-sloping away from one end of body 25, and
Liquid supplementation pipe 11 stretches into the bottom of liquid supply box 6, and this structure supplies can gentle the flowing into by rake 8 of the liquid in baffle-box
In liquid case 6, effectively avoid liquid in liquid supply box 6 from producing larger fluctuation, certainty of measurement can be strengthened.
In other embodiment, 12 bottom of fluid infusion case can also arrange heater strip, liquid can be carried out by heater strip
Heating, the air dissolved during liquid can be reduced.
In the present embodiment, the range of tilt angles with respect to the horizontal plane of rake 8 is：5 °～30 °.In this angle model
In enclosing, what liquid can be gentle falls in liquid supply box 6.Liquid supplying device 1 also includes adjusting rod 4 and connecting rod 9, and adjusting rod 4 is solid
Determine on the base 3,9 one end of connecting rod is fixed with liquid supply box 6, and other end slip location and installation is on adjusting rod 4.Connecting rod 9
Slip location and installation in one end refers to connecting rod 9 on adjusting rod 4 and can slide up and down along adjusting rod 4, and can after adjusting in place
To be fixed on adjusting rod 4 by locking mechanism.
In the present embodiment, connecting rod 9 is L-type.The structure of L-type facilitates the installation of baffle-box, is difficult when position is debugged
Interfere.Support bar 5 is liftable support bar 5.The design of liftable support bar 5 can significantly adjust the position of liquid supply box 6, enter
And can significantly adjust 21 inlet pressure of rock.
As shown in figure 4, in the present embodiment, penetration testing mechanism 2 also include the first tee T 17, the second tee T 30,
Dioxide bottle 19, vacuum extractor 27 and magnetoelectric flowmeter 31；
The first end of the first tee T 17 is connected with the drain pipe 14 of liquid supplying device 1, the second end of the first tee T 17 with
The pipe joint 18 of feed liquor cover plate 20 connects, and the 3rd end of the first tee T 17 is connected with dioxide bottle 19 by pipeline,
And first tee T 17 the pipeline that is connected with dioxide bottle 19 of the 3rd end on the 3rd electromagnetic valve 16 is installed；
Dioxide bottle 19 is connected with passage 42 by pipeline, and dioxide bottle 19 is connected with passage 42
4th electromagnetic valve 23 is installed on pipeline；
The pipe joint 18 for going out liquid cover plate 26 is connected with the first end of magnetoelectric flowmeter 31, the first end of the second tee T 30
It is connected with the second end of magnetoelectric flowmeter 31, the second end of the second tee T 30 is provided with the 6th electromagnetic valve 28, the second tee T
30 the 3rd end is connected with vacuum extractor 27, is pacified on the pipeline that the 3rd end of the second tee T 30 is connected with vacuum extractor 27
Equipped with the 5th electromagnetic valve 29.
By arranging dioxide bottle 19 so that carbon dioxide gass can not only be inflated into ring pressure chamber 43, to resilient sleeve
41 apply pressure, it is ensured that the sealing between rock 21 and resilient sleeve 41, can inflate to the rock 21 in rock installed part 22 again；
By arranging magnetoelectric flowmeter 31 so that in test, can conveniently calculate from rock 21 stream of the liquid for flowing out
Amount；By arranging vacuum extractor 27, coordinate dioxide bottle 19, evacuation can be carried out to rock 21, ensure that and receive
It is that single-phase liquid is fully saturated to survey rock 21.
In the present embodiment, respectively it is controlled by the controller with electric device, is permeated using the present embodiment permeameter measurement rock 21
The method of rate is as follows：
1) rock 21 of cylindrical shape is obtained, its diameter and length L is measured, the cross section of rock 21 is obtained by diameter
Area A；
2) rock 21 is loaded in the resilient sleeve 41 of rock installed part 22, then body 25 is opened, will be equipped with rock 21
Rock installed part 22 be inlaid in mounting groove 39, close body 25, two splits 47 are fixed by securing member 48；
3) by feed liquor cover plate 20 and go out liquid cover plate 26 and screw in 25 both sides of body respectively, up to corresponding metal installation set 40
Against；The pipe joint 18 of feed liquor cover plate 20 is docked with the second end of the first tee T 17, the pipeline for going out liquid cover plate 26 is connect
18 are connected with the first end of magnetoelectric flowmeter 31；
4) the second electromagnetic valve 15, the 3rd electromagnetic valve 16, the 4th electromagnetic valve 23 and the 6th electromagnetic valve 28 are closed, opens the 5th
Electromagnetic valve 29 and vacuum extractor 27, to rock clamp assemblies evacuation；
5) after the completion of evacuation, the 5th electromagnetic valve 29 and vacuum extractor 27 are closed, opens the 3rd battery valve, to rock 21
Filling CO 2；
6) the 3rd electromagnetic valve 16 is closed, opens the 5th electromagnetic valve 29 and vacuum extractor 27, rock clamp assemblies are taken out again
Vacuum；
7) the 4th electromagnetic valve 23 is opened, ring pressure chamber 43 is inflated until 24 reading of ring pressure pressure sensor reaches setting
Value, now closes the 4th electromagnetic valve 23；The 5th electromagnetic valve 29 and vacuum extractor 27 are closed, the first electromagnetic valve 10 and second is opened
Electromagnetic valve 15 and the 6th electromagnetic valve 28, by the liquid injection liquid supply box 6 and fluid infusion case 12 for penetration testing, permeameter is entered
Row running；
8) treat that the liquid level in liquid supply box 6 is located at setting, and inlet hydraulic sensor 33 and fluid pressure sensor 32 are counted
During according to stablizing, data record is carried out, recording the 21 inlet pressure p of rock that inlet hydraulic sensor 33 is measured1, fluid pressure sensing
The 21 outlet pressure p of rock that device 32 is measured2And the flow Q of liquid that magnetoelectric flowmeter 31 is measured；
9) according to formulaThe permeability of rock is obtained, k is rock permeability in formula, and Q is liquid
Flow, μ be test in liquid fluid viscosity, L be rock length, A for rock cross-sectional area, p1For rock inlet-pressure
Power, p2For rock outlet pressure.
The preferred embodiments of the present invention are the foregoing is only, the scope of patent protection of the present invention is not thereby limited, it is all
It is the equivalent structure transformation made with description of the invention and accompanying drawing content, is directly or indirectly used in other related technologies
Field, includes within the scope of the present invention in the same manner.
Claims (9)
1. a kind of permeameter for measuring rock permeability, including penetration testing mechanism, the penetration testing mechanism include rock
Stone clamp assemblies, it is characterised in that the rock clamp assemblies include：
The body of the tubbiness of both ends open；
Hollow rock installed part, is arranged on this in vivo, and rock installed part includes resilient sleeve and is arranged on resilient sleeve two ends
Metal installation set, the resilient sleeve are used to install rock to be tested, and the metal installation set is inlaid in body by sealing ring
On medial wall；
Two are pressed cover clamp, are separately positioned on the both sides of body, are coordinated by medial wall screw thread of the cover clamp with body, by cover clamp
The outer peripheral face for stretching into body end is sealed against with corresponding metal installation set；
Two are respectively feed liquor cover plate by cover clamp and go out liquid cover plate, and two cover plates include cover board body, in cover board body
Portion has cushion chamber, and cover board body has a logical liquid main aperture away from the side of rock installed part, is provided with pipe on logical liquid main aperture
Pipeline connector, cover board body are evenly equipped with multiple logical liquid point holes towards the side of rock installed part；The logical liquid main aperture and logical liquid point hole
Connect with cushion chamber, the cushion chamber is cylindric, and the internal diameter of cushion chamber is identical with resilient sleeve internal diameter；
The buffering intracavity of the feed liquor cover plate is provided with inlet hydraulic sensor, it is described go out liquid cover plate buffering intracavity be provided with out
Hydraulic pressure force transducer.
2. it is used for as claimed in claim 1 measuring the permeameter of rock permeability, it is characterised in that the medial wall of the body
Mounting groove with annular, metal installation set include taper portion and flat part, centrage of the flat part perpendicular to body,
The miner diameter end of taper portion is connected with the outer ring of flat part, and the two ends of resilient sleeve are fixed with the inner ring of corresponding flat part respectively, taper
The bigger diameter end in portion has and stretches into the lobe of mounting groove, and the periphery of lobe is provided with sealing ring, lobe by sealing ring with
Mounting groove sealing coordinates, and flat part is provided with sealing ring towards by the side of cover clamp, and the sealing ring of flat part is positioned close to
The side of resilient sleeve.
3. it is used for as claimed in claim 2 measuring the permeameter of rock permeability, it is characterised in that the outside of rock installed part
Ring pressure chamber is constituted between wall and body medial wall, this body sidewall is provided with ring with the passage connected with ring pressure chamber, ring pressure intracavity
Pressure pressure sensor.
4. it is used for as claimed in claim 3 measuring the permeameter of rock permeability, it is characterised in that also including liquid supplying device,
The liquid supplying device is included for the drain pipe to rock clamp assemblies feed flow；
The penetration testing mechanism also includes the first tee T, the second tee T, dioxide bottle, vacuum extractor and magnetic
Electric flowmeter；
The first end of the first tee T is connected with the drain pipe of liquid supplying device, the second end and the feed liquor cover plate of the first tee T
Pipe joint connection, the 3rd end of the first tee T is connected with dioxide bottle by pipeline, and the of the first tee T
Electromagnetic valve is installed on the pipeline that three ends are connected with dioxide bottle；
The dioxide bottle is connected with passage by pipeline, and is pacified on the pipeline that is connected with passage of dioxide bottle
Equipped with electromagnetic valve；
It is described go out the pipe joint of liquid cover plate be connected with the first end of magnetoelectric flowmeter, the first end and magnetic of second tee T
The second end connection of electric flowmeter, the second end of the second tee T are provided with electromagnetic valve, the 3rd end of the second tee T with take out true
The connection of empty device, is provided with electromagnetic valve on the pipeline that the 3rd end of the second tee T is connected with vacuum extractor.
5. it is used for as claimed in claim 4 measuring the permeameter of rock permeability, it is characterised in that the liquid supplying device is also wrapped
Include：
Base；
Liquid supply box, is arranged on base by support bar, and liquid supply box is fixed on the top of support bar；
Baffle-box, in liquid supply box, is relatively fixed with liquid supply box, and baffle-box includes the baffle-box body of upper end open, buffering
Outside case body upper end, circumferentially direction is provided with rake, and the rake is downward-sloping away from one end of body；
Fluid infusion case, is relatively fixed with base, and fluid infusion case is located at the top of liquid supply box,
Liquid supplementation pipe, one end are connected with fluid infusion bottom end, and the other end stretches into the bottom of liquid supply box, and electromagnetism is also equipped with liquid supplementation pipe
Valve；
Liquid level sensor, is arranged in liquid supply box for perceiving the liquid level of liquid supply box；
Described drain pipe one end is connected with the bottom of liquid supply box, and the other end is coordinated with rock clamp assemblies, for clamping to rock
Component feed flow, is provided with electromagnetic valve on the drain pipe；
Controller, is electrically connected with electromagnetic valve and liquid level sensor, and controller receives the signal of liquid level sensor, and according to liquid level
The signal of sensor controls the electromagnetic valve work of liquid supplementation pipe.
6. it is used for as claimed in claim 5 measuring the permeameter of rock permeability, it is characterised in that liquid supplying device also includes adjusting
Pole and connecting rod, the adjusting rod are fixed on base, and described connecting rod one end is fixed with liquid supply box, and the other end slides fixed
Position is arranged on adjusting rod.
7. it is used for as claimed in claim 6 measuring the permeameter of rock permeability, it is characterised in that the connecting rod is L-type.
8. it is used for as claimed in claim 5 measuring the permeameter of rock permeability, it is characterised in that the support bar is to rise
Descending branch strut.
9. it is used for as claimed in claim 1 measuring the permeameter of rock permeability, it is characterised in that the body includes two
The split being hinged, is provided with sealing member between the mating surface of two splits, split has a fixed part away from one end of hinged place, and two
The fixed part of individual split is abutted and is fixed by securing member.
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| CN201611057779.6A CN106546527B (en) | 2016-11-25 | 2016-11-25 | Osmometer for measuring rock permeability |
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| CN201611057779.6A CN106546527B (en) | 2016-11-25 | 2016-11-25 | Osmometer for measuring rock permeability |
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| CN107991211A (en) * | 2017-10-20 | 2018-05-04 | 四川大学 | A kind of irregular sample coefficient of permeability tester of difference hydraulic condition and test method |
| CN108051305A (en) * | 2017-11-16 | 2018-05-18 | 江西理工大学 | Multi- scenarios method effect indoor-bollard leaching experimental rig |
| CN108956427A (en) * | 2018-09-25 | 2018-12-07 | 河南工程学院 | Rock sample seepage experimental apparatus and its experimental method |
| CN109030319A (en) * | 2018-10-07 | 2018-12-18 | 河南工程学院 | A kind of device and method measuring rock seepage flow |
| CN113029898A (en) * | 2021-02-22 | 2021-06-25 | 西南石油大学 | Device and method for testing dynamic flow conductivity of crack and gas supply capacity of bedrock |
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| CN109030319A (en) * | 2018-10-07 | 2018-12-18 | 河南工程学院 | A kind of device and method measuring rock seepage flow |
| CN113029898A (en) * | 2021-02-22 | 2021-06-25 | 西南石油大学 | Device and method for testing dynamic flow conductivity of crack and gas supply capacity of bedrock |
| CN113029898B (en) * | 2021-02-22 | 2022-04-15 | 西南石油大学 | Device and method for testing dynamic flow conductivity of crack and gas supply capacity of bedrock |
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