CN108708706A - The fracturing experiments device of shale silty sand oil-gas Layer - Google Patents
The fracturing experiments device of shale silty sand oil-gas Layer Download PDFInfo
- Publication number
- CN108708706A CN108708706A CN201810813582.3A CN201810813582A CN108708706A CN 108708706 A CN108708706 A CN 108708706A CN 201810813582 A CN201810813582 A CN 201810813582A CN 108708706 A CN108708706 A CN 108708706A
- Authority
- CN
- China
- Prior art keywords
- container
- pressure
- hole
- injection pressure
- fracturing experiments
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000002474 experimental method Methods 0.000 title claims abstract description 37
- 239000004576 sand Substances 0.000 title claims abstract description 24
- 238000012360 testing method Methods 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000010276 construction Methods 0.000 claims abstract description 8
- 230000008569 process Effects 0.000 claims abstract description 7
- 238000002347 injection Methods 0.000 claims description 73
- 239000007924 injection Substances 0.000 claims description 73
- 239000011435 rock Substances 0.000 claims description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 239000012530 fluid Substances 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 6
- 230000037452 priming Effects 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 5
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 5
- 238000001802 infusion Methods 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 3
- 230000003064 anti-oxidating effect Effects 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 235000003140 Panax quinquefolius Nutrition 0.000 claims description 2
- 240000005373 Panax quinquefolius Species 0.000 claims description 2
- 238000003825 pressing Methods 0.000 abstract description 6
- 238000004088 simulation Methods 0.000 abstract description 4
- 239000003795 chemical substances by application Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention provides the fracturing experiments devices of shale silty sand oil-gas Layer, including：Stratum system for simulating oil-gas Layer environment, wellbore system for simulating subterranean well bore, back pressure system for simulating the underground radial pressure that the container is born covers pressure system, the control system for controlling and recording experimentation for simulate underground axial compressive force that the container is born.The present invention is capable of the underground environment of full simulation shale silty sand, the pressure break test process of shale silty sand is realized by the cooperation of each system, pressing crack construction can be carried out by not only demonstrating the oil-bearing layer of shale silty sand, but also it can determine the required various parameters of practical pressure break, support is provided for practical pressing crack construction, while achieving the purpose that reduce cost.
Description
Technical field
The present invention relates to geology fields, and pressure break can be carried out to Haiti shale silty sand oil-bearing layer rock sample more particularly to one kind
The frac device of state analysis.
Background technology
Due to the anisotropism on stratum, oil-gas accumulation zone might not be connected with shaft bottom.It is formed by pressure break artificial
Crack can get up these solitary aggregation bands with shaft bottom connection, increase new fuel feeding area, and it is that pressure break increases to link up oil gas reservoir area
The major reason of production is a kind of a kind of stimulation technology improving fluid fluid ability in oil-gas Layer.
Fracturing technology is in the rock sample type of hard using preferable.But for the shale silty sand of loose not skeleton structure
The current industry of oil-gas Layer of composition, which generally believes, can not use fracturing technology, and also be provided without any prior art at present
Example through use.
In addition, the oil-gas Layer that shale silty sand is constituted is normally under sea, even if implementing fracturing technique across the sea
Current pressure break state can not be confirmed immediately, and long-time stop across the sea is needed just to be measured as a result, with high costs.
Invention content
The invention aims to provide one kind to carry out pressure break state analysis to Haiti shale silty sand oil-bearing layer rock sample
Frac device.
Particularly, the present invention provides a kind of fracturing experiments device of shale silty sand oil-gas Layer, including：
Stratum system includes the cylindrical hollow container of both ends movable sealing for simulating oil-gas Layer environment, the container
It is evenly arranged on barrel through injection pressure through-hole, the piston of axial movement is provided in the container；
Wellbore system includes being inserted into internal well casing by the container upper end, and is the well for simulating subterranean well bore
Pipe provides the pressure supply device of pressure, provides the liquid feed device of fracturing fluid, and the lower end of the well casing is provided with the internal fracturing fluid of discharge
Drainage hole；
Back pressure system, the underground radial pressure born for simulating the container, including back pressure pump, and the connection back pressure
The injection pressure pipeline of pump and the injection pressure through-hole；
Pressure system is covered, the underground axial compressive force born for simulating the container, including cover described in press pump is connected to one end
Cover press pump, what one end was connected in the container inner carrier and container space between bottom covers pressure pipe road；
Control system includes the computer as control centre, and record and operate for controlling and recording experimentation
The control software of experimentation, and the communication line that is connect with each system by communication interface.
In an embodiment of the invention, the container is provided at both ends with external screw thread, is screwed with respectively by screw thread
Upper cover and lower cover, and it is separately installed with seal plug at the two-port of the container, in the seal plug far from the appearance
Device is provided with the connected unit outwardly protruded on one side, is provided with what the confession connected unit passed through in the upper cover and the lower lid
Through-hole is provided in the connected unit and axially penetrates through hole.
In an embodiment of the invention, it is also respectively provided in the upper cover and the lower lid auxiliary for installing
Help the spare jack of test equipment.
In an embodiment of the invention, the injection pressure through-hole is distributed and is provided with along the even circumferential of the container
The injection pressure lead to the hole site of multilayer, each layer corresponds to.
In an embodiment of the invention, one end fixation that the container outer wall is located in the injection pressure through-hole is useful
In the connector for connecting the injection pressure pipeline.
In an embodiment of the invention, every layer of injection pressure through-hole is provided with 8, is provided with 4 layers altogether and along institute
The test section for stating container is uniformly distributed；The inside of the connector is with internal thread and is fixed by welding in each injection pressure
Through hole.
In an embodiment of the invention, the injection pressure pipeline include have cross-shaped internal straight slot adapter and
Three outlets of autonomous closure plug, the cross straight slot of each adapter connect a connection by branch pipe respectively
Head, the pipeline connection that another interface is connected by branch pipe with the back pressure pump；The closing plug is used to close not using
The connector.
In an embodiment of the invention, the adapter and the branch pipe are stainless steel tube, and the two passes through spiral shell
Line is sealedly and fixedly connected.
In an embodiment of the invention, it is that covering for priming petock formation presses sky below the piston inside the container
Between, priming petock makes the piston at a distance from the immediate injection pressure through-hole more than two injection pressures in vertical direction
The distance of through-hole.
In an embodiment of the invention, the 1/20~30 of a diameter of container diameter of the well casing；It is described
Drainage hole is to pass through the axis of the well casing radially and split slot what end communicated, and the width for splitting slot is described
The 1/2~3 of well casing diameter, highly 1.5~2 times for the well casing diameter.
In an embodiment of the invention, it is placed at position corresponding with the injection pressure through-hole inside the container
There is the filtering layer that blocking shale silty sand squeezes out.
In an embodiment of the invention, anti-oxidation metal acid layer is coated in the outer surface of the container.
In an embodiment of the invention, the infusion pipeline of the wellbore system passes through threeway and the back pressure system
Injection pressure piping connection, to test whether the injection pressure through-hole blocks by water filling before experiment.
In an embodiment of the invention, the back pressure pump of the back pressure system passes sequentially through control valve, back pressure container
It is connect with back-pressure valve with the wellbore system, pressure gauge is installed on the back pressure container, is connected at the back-pressure valve
It is discharged in experimentation by the drainpipe of the water squeezed out in rock sample.
In an embodiment of the invention, the output end for covering press pump is connected with water feeding tank, and the water feeding tank is logical
It crosses valve control and covers pressure pipeline connection with described.
In an embodiment of the invention, the pressure supply device of the wellbore system includes sequentially connected constant speed and constant pressure
Pump, four-way valve, piston hydraulic pressure container, four-way valve；The pressure supply device is setting in piston hydraulic pressure upper vessel portion splendid attire point
The Sheng sap cavity of liquid is split, the constant speed and constant pressure pump is double-cylinder structure, and each cylinder realizes pressure output all the way respectively.
In an embodiment of the invention, the insertion position of the well casing is overlapped with the axial line of the container.
In an embodiment of the invention, further include the sampler barrel of rock sample in the container after taking out experiment, it is described
Sampler barrel includes that diameter is less than the hollow cylinder that the inside diameter of vessel and outer wall can be contacted with the container inner wall, in the cylinder
It is provided on body convenient for controlling the handle of the cylinder action.
In an embodiment of the invention, the lower end of the cylinder is zigzag, on the upper end side wall of the cylinder
It is symmetrically arranged with the through-hole for passing perpendicularly through axial line, the handle passes through after two through-holes with installation on the container.
In an embodiment of the invention, the lower end of the cylinder is zigzag, the upper end lateral wall of the cylinder
On be symmetrically fixed with fixed seat, the handle is two independent rhabodoids, and one end of two rhabodoids passes through axis respectively
Structure is connected in the corresponding fixed seat, and the rhabodoid after connection is using fixed seat as the axis of the relatively described cylinder of fulcrum
Line direction, which is realized, carrys out back rotation.
The present invention is capable of the underground environment of full simulation shale silty sand, and the pressure of shale silty sand is realized by the cooperation of each system
Test process is split, pressing crack construction can be carried out by not only demonstrating the oil-bearing layer of shale silty sand, but also can determine practical pressure break
Required various parameters provide support for practical pressing crack construction, while achieving the purpose that reduce cost.
Description of the drawings
Fig. 1 is the structural schematic diagram of the fracturing experiments device of one embodiment of the present invention；
Fig. 2 is the container schematic diagram of one embodiment of the present invention；
Fig. 3 is the structural schematic diagram of drainage hole on the well casing of one embodiment of the present invention；
Fig. 4 is the sampler barrel structural schematic diagram of one embodiment of the present invention；
Fig. 5 is another sampler barrel structural schematic diagram of the present invention.
Specific implementation mode
As shown in Figure 1, the fracturing experiments device of the shale silty sand oil-gas Layer of one embodiment of the invention includes in general manner
Stratum system 10 for simulating oil-gas Layer environment is used for the wellbore system 20 of module subterranean well bore, for simulating underground radial direction
The back pressure system 30 of pressure, the control covered pressure system 40 and control above-mentioned each system experimentation process for simulating underground axial compressive force
System (not shown) processed.
The stratum system 10 generally comprises the cylindrical hollow container 11 of both ends movable sealing, uniformly divides on the barrel of container 11
It is furnished with and runs through inside and outside injection pressure through-hole 16, the piston 17 of axial movement is provided in container 11.
The wellbore system 20 includes providing pressure by the well casing 21 inside 11 upper end of container insertion container, and for well casing 21
Pressure supply device, the liquid feed device 22 that fracturing fluid is provided；Well casing 21 is used for simulation wellbore hole, hollow structure, upper end opening, lower end setting
There is the drainage hole 211 of the internal fracturing fluid of discharge.
Back pressure system 30 includes the injection pressure pipeline of injection pressure through-hole 16 in back pressure pump 31, and connection back pressure pump 31 and container 11
32, at work, the injection pressure into container 11 by injection pressure pipeline 32 of back pressure pump 31 makes rock sample bear circumference radial pressure
(horizontal direction).
This cover pressure system 40 include cover press pump 41 and one end connection cover 41 other end of press pump connection container, 11 inner carrier 17 with
Pressure pipe road 42 is covered in space between bottom in container 11, cover press pump 41 injected by covering pressure pipe road 42 to the bottom of container 11 it is axial
Pressure (pressure at right angle) applies corresponding axial compressive force to push piston 17 to be moved upward to the rock sample of top.
Control system includes the computer as control centre for controlling and recording experimentation, and mounted on calculating
The control software of simultaneously operation experiments process is recorded in machine, and the communication line being connect with each system by communication interface.
In experiment, first the rock sample that shale silty sand is constituted is handled, places into 17 top of piston in container 11
In test section, the upper and lower ends of container 11 are movable sealing structure, after rock sample is put well, re-closed container 11, and connection back pressure system
System 30 covers pressure system 40, while the well casing of wellbore system 20 21 is inserted into the rock sample center in container 11 by the upper end of container 11
Certain depth at.
It enables back pressure pump 31 and specifies radial pressure to be injected in container 11, start and cover what press pump 41 was specified for the injection of container 11
Axial compressive force, at the same start wellbore system 20 pressure supply device synchronize from well casing 21 into container 11 injection pressure, inside container 11
Pressure reach specified pressure and it is steady when, i.e., the fracturing fluid in liquid feed device 22 is injected into rock by well casing 21 by pressure supply device
In sample, by the injection pressure for controlling fracturing fluid, you can so that rock sample fracturing effect is occurred, then stops the injection pressure of each system, then
It takes out rock sample and carries out fracturing effect analysis, in entire processing procedure, the control of the injection pressure of each system, pressure monitor and fracturing fluid
Injection control etc., is required for being configured by control system and being adjusted, while recording each data variation in experimentation.
For convenience of observation fracturing effect, the pressure break agent in present embodiment uses aqueous fluorescent paint, can not only reduce cost,
Current shape can also be maintained after the drying simultaneously, prevents rock sample from deforming, to provide stability fundamental for later observations.
The present invention is capable of the underground environment of full simulation shale silty sand, and the pressure of shale silty sand is realized by the cooperation of each system
Test process is split, pressing crack construction can be carried out by not only demonstrating the oil-bearing layer of shale silty sand, but also can determine practical pressure break
Required various parameters provide support for practical pressing crack construction, while achieving the purpose that reduce cost.
The movable sealing structure of container 11 is in the following way：External screw thread is set at the both ends of container 11, passes through spiral shell respectively
Line is provided with female upper cover 12 and lower cover 13, while 11 end of container is inserted into installation respectively at the two-port of container 11
The seal plug 14 of mouth, in the connected unit 143 that being provided on one side far from container 11 of seal plug 14 outwardly protrudes, in upper cover 12
With the through-hole 15 passed through for connected unit 143 is provided on lower cover 13, be provided in connected unit 143 and axially penetrate through hole 141, be used for
Insert corresponding injection pressure pipeline 32, well casing 21, cover pressure pipe road 42 etc..Between upper cover 12 and lower cover 13 and container 11, seal plug 14
Between the sealing structures such as corresponding sealing ring, gasket can be set, and the excircle that seal plug 14 is contacted with 11 inner wall of container
On corresponding sealing ring can also be set.The seal plug 14 of upper end uses sliding contact with container 11, can be in upper cover 12
It is applied under extruding on internal rock sample, and the seal plug 14 of lower end is then as the sealing element for bearing pressure in container 11.This
Scheme is convenient to open container 11 at any time, and does not influence the connection of each pipeline while realizing multi-layer sealed effect.In addition, upper cover
12 and lower cover 13 in addition to the through-hole 141 of inserting respective line, can also be arranged corresponding for detecting other experimental datas
The spare jack 142 of supplementary instrument.141 position of through-hole for installing well casing 21 needs the axial line positioned at container 11, makes
The well casing 21 of insertion can be overlapped with axial line, so that the fracturing fluid of output can apply same pressure to surrounding rock sample.
Specifically injection pressure through-hole 16 is provided with multiple, is to establish stratum confining pressure circulation canal, the aperture of injection pressure through-hole
And quantity, it is theoretically smaller more closeer better, but in view of sample blocks the possibility with slime flux, 1-2mm is used in present embodiment
Drill bit drill container.Injection pressure through-hole is distributed along the even circumferential of container 11 in the horizontal direction, while in vertical direction
Interval setting multilayer, 16 position of injection pressure through-hole of each layer corresponds.Every layer of injection pressure through-hole 16 is provided with 8 in present embodiment
A, the interval angles of each injection pressure through-hole of same layer 16 are 45 angles, are provided with 4 layers altogether in vertical direction, this 4 layers with installation
The test zone position of rock sample is corresponding and separation distance from each other is consistent.
For convenience of 16 connecting line of injection pressure through-hole, one end that 11 outer wall of container can be located in injection pressure through-hole 16 is fixed for connecting
Connect the connector 18 of injection pressure pipeline 32.It is internally provided with internal thread in connector 18, such as uses metal nut.Connector 18 can
To be fixed on by welding at each injection pressure through-hole 16,.Corresponding outer spiral shell can be set on the connector of injection pressure pipeline 32
Line, the two can improve anti-pressure ability by being threaded onto together, prevent from being detached from.
In an embodiment of the invention, for convenience of connection injection pressure pipeline 32, which is segmented into interior
The closing plug and corresponding branch pipe 38 that portion has the adapter of cross-shaped internal straight slot, independently uses, the ten of each adapter
Three outlets of font straight slot can be connect by branch pipe 38 with a connector 18 respectively, and remaining one outlet can then pass through
The pipeline connection of 31 connection of branch pipe 38 and injection pressure pump.
Go out due to testing required pressure requirements difference every time, or from the connection structure angle for simplifying injection pressure pipeline 32
Hair does not need each connector 18 and connects a branch pipe 38, the company that can will need not be connected by closing plug at this time
Connector 18 seals, and such as only uses 12,16 connectors, remaining is all closed, and needs to select in the connector 18 of selection connection
It selects symmetrical.In addition, if each connector 18 be separately connected a branch pipe 38 be then not only laid out it is cumbersome, and
The probability to go wrong is also big.Adapter can be set up directly at this time near corresponding several connectors 18, directly by compared with
Short branch pipe 38 is attached, and can greatly simplify the connection design between container end 11 and injection pressure pipeline 32.Further, turn
The remaining outlet of connector can not also directly be connect with 31 end of back pressure pump, but be connect again with adjacent adapter, i.e., all
Adapter itself is formed by branch pipe around container and is connected, and finally an only branch pipe is connect with injection pressure pipeline 32.
In present embodiment, injection pressure pipeline 32 and adapter all use stainless steel to make, and interconnection can pass through spiral shell
Line mode, while using encapsulation process in tie point.
As shown in figure 3, in an embodiment of the invention, the diameter of well casing 21 can be the 1/20 of 11 diameter of container
~30；Specific drainage hole 211 can be passed through the axis of well casing 21 radially and split slot what its end communicated, cut open
The width of fluting can be the 1/2~3 of 21 diameter of well casing, highly 1.5~2 times for 21 diameter of well casing.It is limited using above-mentioned size
Surely it is because fracturing fluid has certain viscosity, if the size of well casing 21, drainage hole 211 is too small to be easy to cause blocking, and too
Flow big and not easy to control.Although the drainage hole 211 of this programme is using the structure for splitting slot, in other schemes, full
Under the nonclogging requirement of foot, it can also use in structures such as the symmetrical hole of 21 end set of well casing, slots.
In an embodiment of the invention, it is placed with resistance at the position corresponding with injection pressure through-hole 16 of 11 inside of container
The filtering layer that shale silty sand squeezes out is kept off, specific filtering layer can be the filter paper for having certain mesh number, can also be using strainer as bone
Frame adds the structure of filter paper.Since injection pressure through-hole 16 is directly communicated with inside container 11, if directly to container 11 inside
Rock sample presses, then due to the characteristic of silty silt, it can be filled into injection pressure through-hole 16, blocks injection pressure channel.And use filtering layer
After structure, then it can stop silty silt but not water is prevented to ooze out, experiment is enable to be normally carried out.The mesh number of specific filter paper can be with
It is determined according to the granular size of shale silty sand.
In an embodiment of the invention, 17 lower section of piston inside container 11 is that covering for priming petock formation presses space
19 (can also be air), piston 17 is coating to press the pressure in space 19 to be lifted off bottom, keeps piston 17 logical with immediate injection pressure
The distance in hole 16 is more than the distance between two injection pressure through-holes 16 in vertical direction.As two 16 vertical ranges of injection pressure through-hole are
40 millimeters, then the distance of 17 distance of piston closest to injection pressure through-hole 16 can be at 50 millimeters or so, to reserve the space for rising and squeezing.
Priming petock can directly be provided by covering pressure system 40.Water feeding tank 43 can be connected with by covering the output end of press pump 41, and water feeding tank 43 is logical
It crosses the control of valve 431 and covers pressure pipe road 42 and be connected to.In addition it is also possible to be realized by pressure supply device.
It, can be anti-oxidation with spray coating in the outer surface of container 11 and/or inner surface to prevent container 11 by water or liquid corrosion
Metal acid layer.
In an embodiment of the invention, it whether there is leakage phenomenon in the injection pressure pipeline 32 after being connected for test,
The infusion pipeline 26 of wellbore system 20 can be connect by threeway with the injection pressure pipeline 32 of back pressure system 30, so that wellbore system 20
It can test whether injection pressure through-hole 16 blocks by water filling before experiment.It, can be with because wellbore system 20 has liquid feed device 22
It is directly used in water filling, it is possible to directly utilize, a set of water supply installation is installed again without back pressure system 30.In this embodiment party
In formula, injection pressure pipeline 32 and infusion pipeline 26 can realize individually control break-make by valve, to avoid influencing each other.
The back pressure pump 31 of specific back pressure system 30 can pass sequentially through control valve 33, back pressure container 34 and back-pressure valve 36 with
Stratum system 10 connects, and pressure gauge 35 is equipped on back pressure container 34, is connected at back-pressure valve 36 in discharge experimentation
Into the drainpipe 37 of water in well casing 21.Control valve 33 and back-pressure valve 36 can be conveyed with control pressure, prevent pressure from flowing back, always
Current pressure is kept to maintain under specified pressure state, back pressure container 34 makes pressure gauge 35 directly reflect that current pressure is big
It is small.Drainpipe 37 for be discharged in experimentation by rock sample by pressure break agent expressed water.It can also be in the outlet side of drainpipe 37
One water receiving case 39 is set.Injection pressure pipeline 32 before back-pressure valve 36 by respectively with each connector 18 or specified quantity
Branch pipe, the corresponding adapter of the connection of connector 18 are constituted.
In an embodiment of the invention, the pressure supply device of wellbore system 20 includes sequentially connected constant speed and constant pressure pump
25, four-way valve 23, piston hydraulic pressure container 24, four-way valve 27；Liquid feed device 22 is the hydraulic pressure being arranged in piston hydraulic pressure upper vessel portion
Whether chamber, the hydraulic cavities can be used to be filled with water unobstructed to test pipeline early period, and pressure break agent can also be contained in later experiments,
Constant speed and constant pressure pump 25 is double-cylinder structure, and each cylinder can realize pressure output all the way respectively.Peace can be facilitated using four-way valve 23,27
Dress measures the measuring instrument of current state, such as pressure gauge, or the detection mouth whether unobstructed as current pipeline is detected, can also be with
When access corresponding intake line, such as water injection pipe.Piston in piston hydraulic pressure container 24 under the pressure of constant speed and constant pressure pump 25 to
The upper pressure break agent for squeezing hydraulic pressure intracavitary, pressure break agent is squeezed by well casing 21 in the rock sample in container 11 under a certain pressure, permanent
Fast constant pressure pump can maintain pressure output at designated value.
As shown in figure 4, in an embodiment of the invention, provide it is a kind of by rock sample after experiment by being taken out in container
Sampler barrel 50 since rock sample needs to be subjected to larger pressure in container 11, while itself being also the product after being watered, therefore its
Contacted with 11 inner wall of container it is tighter, strength sample destructible experimental result, therefore, present embodiment using sampler barrel 50 along container
11 madial wall is pressed downward, and rock sample is extracted to the outer edge downlink cutting type of rock sample.
Specific sampler barrel 50 include diameter be less than 11 internal diameter of container and outer wall can be contacted with 11 inner wall of container it is hollow
Cylinder 51 is provided with the handle 52 convenient for control cylinder action on cylinder 51.When in use, it is applied a force to by handle 52
On cylinder 51, so that the lower end of cylinder 51 is splitted the engagement of rock sample and 11 inner wall of container, rock sample is gradually made to enter the inside of cylinder 51,
Finally propose that cylinder 51 further takes out rock sample.The sampler barrel 50 of present embodiment both once can entirely take out rock sample,
Segmented mode may be used by the sectional taking-up of rock sample.
Further, split rock sample for convenience of cylinder 51, can by the lower end of cylinder 51 be arranged toothing 511, with
It during 51 downlink of cylinder, can not only apply pressure at right angle, can also be rotated left and right, lower scanning frequency is accelerated with cutting mode
Degree, while can also reduce force size.Handle 52 can be a straight-bar, be then symmetrical arranged on the upper end side wall of cylinder 51
The through-hole of axial line is passed perpendicularly through, handle 52 passes through two through-holes and both ends to expose the length for operating human hand held enough.In use,
Operator can be pressed and be rotated to cylinder 51 by the handle 52 that both ends are exposed, and enable cylinder 51 faster by rock
Sample is cut down.
As shown in figure 5, in yet another embodiment of the present invention, in the case where 51 lower end of cylinder is the structure of zigzag 511,
Handle 52 can be arranged to separated two-stage structure, and using being rotatably mounted on cylinder 51, concrete structure is as follows：
Fixed seat 53 is symmetrically fixed on the upper end lateral wall of cylinder 51, handle 52 uses two independent rhabodoids 521, and two rod-shaped
One end of body 521 is connected to by axle construction in corresponding fixed seat 53 respectively, and the rhabodoid 521 after connection is with fixed seat 53
Fulcrum is realized with respect to the axis direction of cylinder 51 carrys out back rotation.This structure facilitates the usually storage of sampler barrel 50, and does not influence
Normal use.
So far, although those skilled in the art will appreciate that present invention has been shown and described in detail herein multiple shows
Example property embodiment still without departing from the spirit and scope of the present invention, still can according to the present disclosure directly
Determine or derive many other variations or modifications consistent with the principles of the invention.Therefore, the scope of the present invention is understood that and recognizes
It is set to and covers other all these variations or modifications.
Claims (20)
1. the fracturing experiments device of shale silty sand oil-gas Layer, which is characterized in that including：
Stratum system includes the cylindrical hollow container of both ends movable sealing, the barrel of the container for simulating oil-gas Layer environment
On be evenly arranged with through injection pressure through-hole, the piston of axial movement is provided in the container；
Wellbore system includes being carried by the well casing inside container upper end insertion, and for the well casing for simulating subterranean well bore
For pressure pressure supply device, the liquid feed device of fracturing fluid is provided, the lower end of the well casing is provided with the row of the internal fracturing fluid of discharge
Fluid apertures；
Back pressure system, the underground radial pressure born for simulating the container, including back pressure pump, and the connection back pressure pump and
The injection pressure pipeline of the injection pressure through-hole；
Cover pressure system, the underground axial compressive force born for simulating the container, including cover press pump be connected to one end described in cover pressure
Pump, what one end was connected in the container inner carrier and container space between bottom covers pressure pipe road；
Control system includes the computer as control centre for controlling and recording experimentation, and record and operation experiments
The control software of process, and the communication line that is connect with each system by communication interface.
2. fracturing experiments device according to claim 1, which is characterized in that
The container is provided at both ends with external screw thread, is screwed with upper cover and lower cover by screw thread respectively, and at the both ends of the container
It is separately installed with seal plug at mouthful, the connection outwardly protruded is provided on one side far from the container in the seal plug
Platform is provided with the through-hole passed through for the connected unit in the upper cover and the lower lid, axis is provided in the connected unit
To through hole.
3. fracturing experiments device according to claim 2, which is characterized in that
The spare jack for installing subtest equipment is also respectively provided in the upper cover and the lower lid.
4. fracturing experiments device according to claim 1, which is characterized in that
The injection pressure through-hole is distributed along the even circumferential of the container and is provided with multilayer, the injection pressure lead to the hole site pair of each layer
It answers.
5. fracturing experiments device according to claim 4, which is characterized in that
The one end for being located at the container outer wall in the injection pressure through-hole is fixed with connector for connecting the injection pressure pipeline.
6. fracturing experiments device according to claim 5, which is characterized in that
Every layer of injection pressure through-hole is provided with 8, is provided with 4 layers altogether and is uniformly distributed along the test section of the container；The company
The inside of connector is with internal thread and is fixed by welding in each injection pressure through hole.
7. fracturing experiments device according to claim 5, which is characterized in that
The injection pressure pipeline includes the adapter and autonomous closure plug for having cross-shaped internal straight slot, each adapter
Three outlets of cross straight slot connect a connector by branch pipe respectively, another interface passes through branch pipe and the back of the body
The pipeline connection of press pump connection；The closing plug is for closing the connector not used.
8. fracturing experiments device according to claim 7, which is characterized in that
The adapter and the branch pipe are stainless steel tube, and the two is fixedly connected by thread seal.
9. fracturing experiments device according to claim 6, which is characterized in that
It is that covering for priming petock formation presses space, priming petock to make the piston and immediate institute below piston inside the container
The distance for stating injection pressure through-hole is more than the distance of two injection pressure through-holes in vertical direction.
10. fracturing experiments device according to claim 1, which is characterized in that
The 1/20~30 of a diameter of container diameter of the well casing；The drainage hole is to pass through the well casing radially
Axis and split slot what end communicated, the width for splitting slot is the 1/2~3 of the well casing diameter, is highly the well
1.5~2 times of pipe diameter.
11. fracturing experiments device according to claim 1, which is characterized in that
The filtering layer that blocking shale silty sand squeezes out is placed with inside the container at position corresponding with the injection pressure through-hole.
12. fracturing experiments device according to claim 1, which is characterized in that
Anti-oxidation metal acid layer is coated in the outer surface of the container.
13. fracturing experiments device according to claim 1, which is characterized in that
The infusion pipeline of the wellbore system is by the injection pressure piping connection of threeway and the back pressure system, to pass through before experiment
Water filling tests whether the injection pressure through-hole blocks.
14. fracturing experiments device according to claim 1, which is characterized in that
The back pressure pump of the back pressure system passes sequentially through control valve, back pressure container and back-pressure valve and is connect with the wellbore system,
Pressure gauge is installed on the back pressure container, is squeezed out in being connected at the back-pressure valve in discharge experimentation by rock sample
The drainpipe of water.
15. fracturing experiments device according to claim 1, which is characterized in that
The output end for covering press pump is connected with water feeding tank, and the water feeding tank covers pressure pipeline connection by valve control with described.
16. fracturing experiments device according to claim 1, which is characterized in that
The pressure supply device of the wellbore system includes sequentially connected constant speed and constant pressure pump, four-way valve, piston hydraulic pressure container, four-way
Valve；The pressure supply device is that the Sheng sap cavity that division liquid is contained in the piston hydraulic pressure upper vessel portion is arranged, the constant speed and constant pressure pump
For double-cylinder structure, each cylinder realizes pressure output all the way respectively.
17. fracturing experiments device according to claim 1, which is characterized in that
The insertion position of the well casing is overlapped with the axial line of the container.
18. fracturing experiments device according to claim 1, which is characterized in that
Further include the sampler barrel of rock sample in the container after taking out experiment, the sampler barrel includes that diameter is less than the inside diameter of vessel
And the hollow cylinder that outer wall can be contacted with the container inner wall, it is provided on the cylinder convenient for controlling the cylinder action
Handle.
19. fracturing experiments device according to claim 18, which is characterized in that
The lower end of the cylinder is zigzag, is symmetrically arranged on the upper end side wall of the cylinder and passes perpendicularly through the logical of axial line
Hole, the handle pass through after two through-holes with installation on the container.
20. fracturing experiments device according to claim 18, which is characterized in that
The lower end of the cylinder is zigzag, is symmetrically fixed with fixed seat on the upper end lateral wall of the cylinder, the handle is
One end of two independent rhabodoids, two rhabodoids is connected to by axle construction in the corresponding fixed seat respectively, and
The rhabodoid after connection, which is realized using fixed seat as the axis direction of the relatively described cylinder of fulcrum, carrys out back rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810813582.3A CN108708706A (en) | 2018-07-23 | 2018-07-23 | The fracturing experiments device of shale silty sand oil-gas Layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810813582.3A CN108708706A (en) | 2018-07-23 | 2018-07-23 | The fracturing experiments device of shale silty sand oil-gas Layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108708706A true CN108708706A (en) | 2018-10-26 |
Family
ID=63875265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810813582.3A Pending CN108708706A (en) | 2018-07-23 | 2018-07-23 | The fracturing experiments device of shale silty sand oil-gas Layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108708706A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109632625A (en) * | 2018-10-29 | 2019-04-16 | 中国矿业大学 | A kind of deformation coal original position coal bed gas horizontal well unloads compression testing device and test method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100042325A1 (en) * | 2008-08-18 | 2010-02-18 | Beasley Craig J | Determining characteristics of a subterranean body using pressure data and seismic data |
| CN104405377A (en) * | 2014-12-02 | 2015-03-11 | 东北石油大学 | Method and device for accurately simulating core under-pressure placing displacement in laboratories |
| CN105738221A (en) * | 2016-04-14 | 2016-07-06 | 西南石油大学 | Experimental device and method for simulating hydraulic fracturing under perforated completion |
| WO2016200375A1 (en) * | 2015-06-10 | 2016-12-15 | Halliburton Energy Services, Inc. | Fluidic device that emulates a fracture in a formation and is used to test flow of a treatment fluid through the device |
| CN106680435A (en) * | 2017-01-12 | 2017-05-17 | 中国石油大学(华东) | Experiment system and method for simulating sand production during hydrate exploitation |
| CN107941672A (en) * | 2017-11-14 | 2018-04-20 | 中南大学 | Low permeability reservoir dynamic takes sand and expands seam test device |
| CN208605173U (en) * | 2018-07-23 | 2019-03-15 | 广州海洋地质调查局 | The fracturing experiments device of shale silty sand oil-gas Layer |
-
2018
- 2018-07-23 CN CN201810813582.3A patent/CN108708706A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100042325A1 (en) * | 2008-08-18 | 2010-02-18 | Beasley Craig J | Determining characteristics of a subterranean body using pressure data and seismic data |
| CN104405377A (en) * | 2014-12-02 | 2015-03-11 | 东北石油大学 | Method and device for accurately simulating core under-pressure placing displacement in laboratories |
| WO2016200375A1 (en) * | 2015-06-10 | 2016-12-15 | Halliburton Energy Services, Inc. | Fluidic device that emulates a fracture in a formation and is used to test flow of a treatment fluid through the device |
| CN105738221A (en) * | 2016-04-14 | 2016-07-06 | 西南石油大学 | Experimental device and method for simulating hydraulic fracturing under perforated completion |
| CN106680435A (en) * | 2017-01-12 | 2017-05-17 | 中国石油大学(华东) | Experiment system and method for simulating sand production during hydrate exploitation |
| CN107941672A (en) * | 2017-11-14 | 2018-04-20 | 中南大学 | Low permeability reservoir dynamic takes sand and expands seam test device |
| CN208605173U (en) * | 2018-07-23 | 2019-03-15 | 广州海洋地质调查局 | The fracturing experiments device of shale silty sand oil-gas Layer |
Non-Patent Citations (3)
| Title |
|---|
| 中国有色金属工业总公司《工程勘察与管理》编写组: "工程勘察与管理", 31 October 1987, 西安交通大学出版社, pages: 609 - 612 * |
| 杨澄宇 等: "中等职业教育国家规划教材 建筑施工技术与机械 （工业与民用建筑专业）", 30 April 2004, 高等教育出版社, pages: 30 - 32 * |
| 郑旭煦 等: "化工原理 上 第2版", 31 January 2016, 华中科技大学出版社, pages: 47 - 52 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109632625A (en) * | 2018-10-29 | 2019-04-16 | 中国矿业大学 | A kind of deformation coal original position coal bed gas horizontal well unloads compression testing device and test method |
| CN109632625B (en) * | 2018-10-29 | 2020-04-03 | 中国矿业大学 | Tectonic coal in-situ coal bed gas horizontal well pressure relief test device and test method |
| WO2020087862A1 (en) * | 2018-10-29 | 2020-05-07 | 中国矿业大学 | Device for simulating pressure relief of in-situ coalbed methane horizontal well in tectonically-deformed coal, and simulation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204679347U (en) | A kind of drilling fluid pressurization sealing crushing test device | |
| CN204807547U (en) | Stress seepage coupling true triaxial shear box | |
| CN112627783B (en) | Experimental device for low-frequency pressure transformation improves gas injection recovery ratio | |
| CN102721634B (en) | Method and device for in-situ penetration test by means of water injection under drilling pressure | |
| CN201273190Y (en) | Triaxial stress multi-pressure-measuring-point core oil reservoir simulation device | |
| CN109723404A (en) | Coal measure gas prospect pit naked eye device for plugging and method | |
| CN110439544B (en) | Indoor experimental device based on true triaxial acidizing and fracturing and acidizing and fracturing simulation method | |
| CN109138978B (en) | Horizontal well oil production contribution testing method based on controlled release tracer technology | |
| CN208605173U (en) | The fracturing experiments device of shale silty sand oil-gas Layer | |
| CN111577257B (en) | Horizontal well subsection setting type flow metering water exploration pipe column and water exploration method thereof | |
| CN110924907B (en) | Multi-section pressure measurement water-gas alternating oil extraction experimental device and method for CT scanning | |
| CN108240955A (en) | System and method for evaluating damage of cement paste to reservoir | |
| CN108708706A (en) | The fracturing experiments device of shale silty sand oil-gas Layer | |
| CN105221136B (en) | Sieve tube early stage subsection water control and monitoring channeling integrated well completion tool | |
| CN207634063U (en) | A kind of solvable bridge plug performance testing device | |
| CN110082220A (en) | A kind of porous guiding fracturing experiments device of true triaxial | |
| CN104989359B (en) | Non-homogeneity layering injection oriented fracturing experimental device | |
| CN107489394A (en) | Open hole packer three-ellipse experimental device | |
| CN108915657A (en) | The fracturing experiments method of shale silty sand oil-gas Layer | |
| CN112443288B (en) | Experimental device for evaluating sealing capacity of two interfaces of well cementation cement sheath | |
| CN111963153A (en) | Test system and method for water outlet section of horizontal well of composite continuous pipe cable | |
| CN202250055U (en) | Probe system | |
| CN107448177B (en) | Oil well liquid production profile testing pipe column and testing method thereof | |
| CN114991728A (en) | Simulated CO 2 Electrical tomography experimental device and method for gas drive oil reservoir and application | |
| CN113008686B (en) | Hard and brittle shale crack opening simulation device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |