CN206707687U - Simulate the device of complex fracture sanding - Google Patents
Simulate the device of complex fracture sanding Download PDFInfo
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- CN206707687U CN206707687U CN201720326522.XU CN201720326522U CN206707687U CN 206707687 U CN206707687 U CN 206707687U CN 201720326522 U CN201720326522 U CN 201720326522U CN 206707687 U CN206707687 U CN 206707687U
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Abstract
The utility model embodiment provides a kind of device for simulating complex fracture sanding, complex fracture model configuration is placed in confined pressure equipment, by being full of the water with default pressure into confined pressure equipment, so that pressure of the complex fracture model configuration being placed in confined pressure equipment by ambient water, so as to influence of the simulated ground stress to fracturing process；And two pieces of transparent plates of crack component and it can be slided in the chute that bound edge frame is formed and produce relative displacement, when not injecting liquid to crack component, under the pressure of confined pressure equipment reclaimed water, gap between two pieces of flat boards is into closure state；With the increase of amount of liquid in injection crack component, when two pieces of flat boards in the component of crack by liquid pressure be more than its by confined pressure equipment reclaimed water pressure when, gap between two pieces of flat boards is more and more wider, so as to simulate the forming process in crack in actual fracturing process, so as to truer simulation fracturing process so that obtained experimental data is more accurate.
Description
Technical field
The utility model embodiment is related to oil-gas field development studying technological domain, more particularly to a kind of simulation complex fracture paving
The device of sand.
Background technology
China's natural oil, gas resource reserve are abundant, potentiality to be exploited is big, but the rock stratum stocked resources compared with it is deep, geological conditions is multiple
It is miscellaneous, it is not easy to exploit, hydraulic fracturing (abbreviation pressure break) technology is one of key technology of high efficiency, low cost exploitation shale gas.In reality
Fracturing process in due to the collective effect of shearing slip and pulling damage, a major fracture, a plurality of can be formed in fracturing process
The width in secondary crack and three-level crack, secondary crack and three-level crack is smaller.Due to the complexity of the shape in crack, pressing
During the sanding (laying proppant) split, it may appear that secondary, the proppant concentration in three-level crack are lower than major fracture, and each bar splits
The unbalanced problem of proppant concentration of seam.How to be formed by hydraulic fracturing can be by the effective fracture of the balanced filling of proppant
It is the key for carrying out high efficiency, low cost exploitation, the process that the row of returning how is laid by more realistically simulation fracture inner support agent obtains
Closer to real experimental data, production efficiency is improved so as to provide scientific basis for practice of construction process, turns into this area skill
The focus of art personnel research.
At present, sanding process is simulated by injecting mulling liquid in slit plate.In existing simulation fracture sanding gear
Slit plate is used to simulate caused crack in fracturing process, and slit plate is by some secondary fissures around a major fracture and major fracture
Seam composition.When carrying out simulation sanding, first have to the major fracture with specified width, which width and secondary crack being assembled into fixation
The slit plate of form, mulling liquid simulation sanding process is then injected in slit plate.
Reality fracturing process in crack formation be a crack from scratch, from wide change procedure is too narrow to, split
There is very strong crustal stress around seam.When injecting liquid into crack, flowing of the liquid in crack also can be by crustal stress
Influence.But the form of existing slit plate is fixed, during once sanding is simulated, the width of slit plate will not become
Change；And the influence of crustal stress is not accounted for, have compared with big limitation, have larger discrepancy with actual conditions, cause obtained reality
Test data inaccuracy.
Utility model content
The utility model embodiment provides a kind of device for simulating complex fracture sanding, to solve in the prior art due to splitting
The form of seam plate is fixed, and during once sanding is simulated, the width of slit plate will not change；And answer with not accounting for
The influence of power, have compared with big limitation, have larger discrepancy with actual conditions, the experimental data for causing to obtain is inaccurate to ask
Topic.
The utility model embodiment provides a kind of device for simulating complex fracture sanding, including：
Complex fracture model configuration, confined pressure equipment, sand blender, the first injection pump and control module；
The complex fracture model configuration include a major fracture component, be connected with the major fracture component at least one
Bar time crack component and at least one three-level crack component being connected with least one crack component；
The crack component is by two pieces of transparent plates be arrangeding in parallel and by between two pieces of transparent plate inwalls
The bound edge frame composition of gap sealing, the bound edge frame are transparent for described two pieces along being formed perpendicular to the direction of the transparent plate
The chute that flat board slides；Inlet attack for injecting liquid is connected with a pair of parallel frame of the bound edge frame and for arranging
Go out the outlet connection of liquid, be connected with two pieces of transparent plate outer walls for connecting other crack component connection joints, institute
State inlet attack, the outlet connection and described to connect joint salable；
The confined pressure equipment is the sealed transparent casing with first port and second port, is full of in the confined pressure equipment
During water with default pressure, the complex fracture model configuration being placed in the confined pressure equipment is pressed by ambient water
Power；
The sand blender is used for the fracturing fluid and the mixed with proppants into mulling liquid, the sand blender it is defeated
Exit port is connected by the first pipeline with the input port of first injection pump；
The output port of first injection pump passes through the second pipeline through the first port and the major fracture group
The inlet attack connection of part, to convey prepad fluid or mulling liquid into the major fracture component；
The control module is by adjusting the first injection described in the Flux Valve Control being installed on second pipeline
Pump injects the discharge capacity of liquid to the major fracture component.
The device for the simulation complex fracture sanding that the utility model embodiment provides, complex fracture model configuration is placed in and enclosed
Press in equipment, by being full of the water with default pressure into confined pressure equipment so that the institute being placed in the confined pressure equipment
Pressure of the complex fracture model configuration by ambient water is stated, so as to influence of the simulated ground stress to fracturing process；And this implementation
Example provide crack component two pieces of transparent plates and can bound edge frame formed chute in slide produce relative displacement, not
When injecting liquid to crack component, under the pressure of confined pressure equipment reclaimed water, gap between two pieces of flat boards is into closure state；With showwing loving care for
Enter the increase of amount of liquid in the component of crack, when two pieces of flat boards in the component of crack are set by the pressure of liquid more than it by confined pressure
During the pressure of standby reclaimed water, the gap between two pieces of flat boards is more and more wider, so as to simulate the formation in crack in actual fracturing process
Process, so as to truer simulation fracturing process so that obtained experimental data is more accurate.
Brief description of the drawings
Fig. 1 is the structural representation of the device for the simulation complex fracture sanding that the utility model embodiment one provides；
Fig. 2 is sectional view of the major fracture component of the offer of the utility model embodiment one in crack closure；
Fig. 3 is sectional view of the major fracture component of the offer of the utility model embodiment one in fracture open；
Fig. 4 is the schematic diagram for the complex fracture model configuration that the present embodiment two provides；
Fig. 5 is the schematic diagram for the complex fracture model configuration that the utility model embodiment three provides；
Fig. 6 is the method flow diagram for the simulation complex fracture sanding that the utility model embodiment six provides.
Embodiment
To make the technical solution of the utility model and advantage clearer, below in conjunction with the utility model embodiment
Accompanying drawing, the technical solution of the utility model is clearly and completely described, it is clear that described embodiment is that this practicality is new
Type part of the embodiment, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belong to the scope of the utility model protection.
Embodiment one
Fig. 1 is the structural representation of the device for the simulation complex fracture sanding that the utility model embodiment one provides.Fig. 2 is
Sectional view of the major fracture component that the utility model embodiment one provides in crack closure.Fig. 3 is the utility model embodiment
Sectional view of the one major fracture component provided in fracture open.The utility model embodiment is directed in the prior art due to crack
The form of plate is fixed, and during once sanding is simulated, the width of slit plate will not change；And crustal stress is not accounted for
Influence, have compared with big limitation, have larger discrepancy with actual conditions, the problem of causing obtained experimental data inaccuracy,
Provide the device of simulation complex fracture sanding.As shown in figure 1, the device of the simulation complex fracture sanding includes：Complex fracture
Model configuration 11, confined pressure equipment 12, sand blender 13, the first injection pump 14 and control module (not marked in figure).Wherein, it is described
Complex fracture model configuration 11 is made up of multiple crack components, including a major fracture component 111, with the major fracture component phase
At least one crack component 112 of connection and at least one three-level being connected with least one crack component
Crack component 113.
The structure of each crack component in the complex fracture model configuration 11 is identical, below with the structure of major fracture component
Exemplified by, illustrated with reference to the structure of Fig. 2-3 pairs of major fracture components.Fig. 2 is sectional view of the major fracture component in crack closure,
As shown in Fig. 2 major fracture component 111 is by two pieces of transparent plates 114 and 115 for be arrangeding in parallel and by two pieces of transparent plates
The bound edge frame 116 of gap sealing between inwall forms, and the bound edge frame 116 is along perpendicular to the transparent plate 114 and 115
Direction forms the chute slided for two pieces of transparent plates；The a pair of parallel frame 116a and 116b of the bound edge frame 116
On be connected with the inlet attack 117 for injecting liquid and the outlet connection 118 for discharging liquid, two pieces of transparent plates
It is connected with outer wall for connecting other crack component connection joints (not identified in figure), the inlet attack 117, the outlet
Joint 118 with described to connect joint salable.Sectional view in Fig. 3 with major fracture component in crack closure.
Alternatively, as Figure 2-3, it is provided with the chute that the bound edge frame 116 is formed transparent flat for sealing two pieces
Gap between plate 114 and 115 is slidingly sealed bar 110 so that is formed in two pieces of sliding processes of transparent plate 114 and 115
Gap be constantly in sealing state.
The confined pressure equipment 12 is the sealed transparent casing with first port 121 and second port 122, and the confined pressure is set
When the water with default pressure is full of in standby, the complex fracture model configuration 11 in the confined pressure equipment is placed in by week
Enclose the pressure of water.
The sand blender 13 is used for the fracturing fluid and the mixed with proppants into mulling liquid, the sand blender
Output port is connected by the first pipeline with the input port of first injection pump 14.
Alternatively, fluid reservoir, sand tank and mixer are also included in the sand blender 13, the fluid reservoir passes through pipeline
Connected with the input port of the mixer, for conveying fracturing fluid to the mixer.The sand tank passes through pipeline and institute
The input port connection of mixer is stated, for conveying proppant to the mixer.Pipeline, storage between fluid reservoir and mixer
The regulating valve for controlling liquid displacement is separately installed with pipeline between silo and mixer.
The output port of first injection pump 14 is split by the second pipeline through the first port 121 with the master
The inlet attack connection of component is stitched, to convey prepad fluid or mulling liquid into the major fracture component.
The control module controls first note by adjusting the flow control valve 15 being installed on second pipeline
Enter the discharge capacity that pump 14 injects liquid to the major fracture component 111, so as to the discharge capacity by controlling the first injection pump 14, mould
Intend influence of the different displacements to proppant effect of settling after the completion of complex fracture sanding.
In the present embodiment, by injecting water into confined pressure equipment 12, it can cause by being full of into confined pressure equipment 12
Water with default pressure.When not injecting liquid to complex fracture model configuration 11, under the pressure of the reclaimed water of confined pressure equipment 12,
Gap between two pieces of transparent plates of each crack component is into closure state (as shown in Figure 2)；With liquid in injection crack component
The increase of amount, when two pieces of transparent plates in the component of crack are pressed by the pressure of liquid more than it by the reclaimed water of confined pressure equipment 12
During power, the gap of two pieces of transparent plates is opened, and with injection crack component amount of liquid be continuously increased it is more and more wider, directly
(as shown in Figure 3) is opened to complete.In addition, by changing default pressure when water is full of in confined pressure equipment 12 so as to again
When miscellaneous results of fracture simulation structure 11 injects same amount of liquid, change the gap width between two pieces of transparent plates in the component of crack.
Wherein, the width of chute can be set according to being actually needed by technical staff, by presetting chute
Width, it can be defined with the fracture width that fracture component finally opens, the present embodiment is not done specifically for the width of chute
Limit.Default pressure can be set according to being actually needed by technical staff in experimentation, and technical staff can be one
After secondary Germicidal efficacy terminates, by reducing the water in (or increase) confined pressure equipment 12, to reduce (or increase) confined pressure equipment reclaimed water
To the pressure of individual crack component, the crack formed to each crack component narrows (or broadening), and device need not be re-assemblied to realize
Can changes the technique effect of fracture width.
In the utility model embodiment, the device can also include being used to obtain flowmeter, pressure gauge of experimental data etc.
Measuring instrument, these measuring instruments are connected with control module, and the experimental data collected is transferred into computer so that computer
Statistics curve or statistics form etc. are generated according to experimental data, and are presented to technical staff so that technical staff
Obtained experimental data Optimal Experimental parameter and equipment etc. can be passed through.In addition, the device can also include being used to record simulation
The video camera of complex fracture sanding process, so as to technical staff according to the data of camera record to simulating complex fracture sanding mistake
Cheng Jinhang compares analysis and optimization etc. repeatedly.
The utility model embodiment is by the way that complex fracture model configuration 11 is placed in confined pressure equipment 12, by being set to confined pressure
The water with default pressure is full of in standby 12 so that the complex fracture model configuration being placed in the confined pressure equipment 12
11 by ambient water pressure, so as to influence of the simulated ground stress to fracturing process；And the crack component that the present embodiment provides
Two pieces of transparent plates 114 and 115 can bound edge frame 16 formed chute in slide produce relative displacement, not to crack group
When part injects liquid, under the pressure of the reclaimed water of confined pressure equipment 12, gap between two pieces of flat boards is into closure state；With injection crack
The increase of amount of liquid in component, when two pieces of flat boards in the component of crack are more than it by confined pressure equipment 12 by the pressure of liquid
During the pressure of water, the gap between two pieces of flat boards is more and more wider, so as to simulate the forming process in crack in actual fracturing process,
So as to truer simulation fracturing process so that obtained experimental data is more accurate.
Embodiment two
Fig. 4 is the schematic diagram for the complex fracture model configuration that the present embodiment two provides.On the basis of above-described embodiment one, such as
Shown in Fig. 4, each crack component in complex fracture model configuration 11 includes multiple inlet attacks 117 and multiple described
Outlet connection 118, length direction of the inlet attack 117 along place frame are uniformly distributed, and the outlet connection 118 is along place
The length direction of frame is uniformly distributed.When being tested, the output port of first injection pump 14 is by through described
Second pipeline of Single port is connected with multiple inlet attacks 117 of the major fracture component, by along the length side of place frame
Liquid is injected to equally distributed multiple inlet attacks 117, it is possible to achieve the function of simulation wellbore hole, well is simulated without setting
Cylinder.
As shown in figure 4, the crack component includes multigroup connection joint 119, every group of connection joint 119 connects along the entrance
The length direction of first 117 place frame is uniformly distributed.One group of connection joint of the major fracture component and the secondary crack component
Inlet attack connected by the way that flexible pipe is corresponding, the adjustable angle between the major fracture component and the secondary crack component.It is described
One group of connection joint of secondary crack component connects with the inlet attack of three-level crack component by the way that flexible pipe is corresponding, the secondary fissure
Stitch the adjustable angle between component and three-level crack component.
On the basis of above-described embodiment, due to reality fracturing process in caused crack since the entrance of crack increasingly
It is narrow, when injecting liquid into crack, the resistance reverse with liquid injection direction can be produced in crack, is set and the major fracture
The back pressure apparatus of multiple outlet connections connection of component, the back pressure apparatus is used to convey gas into the major fracture, with production
The outlet connection of the major fracture component is born to the gas pressure in inlet attack direction, during injecting liquid in simulation fracture
Resistance.
Alternatively, in order to detect the fracture width that crack component is formed in fracturing process is simulated, in each crack
Microspur sensor is installed on component.The microspur sensor first component and second component are respectively arranged in the crack component
On two pieces of transparent plates, and the position line of the first component and the second component is perpendicular to two pieces of transparent plates,
The distance between two pieces of transparent plates for measuring the crack component.
Alternatively, shaggy transparent film layer, the transparent film layer are pasted with the inwall of two pieces of transparent plates
Roughness it is suitable with the roughness for the crack plane of disruption that practice of construction layer is formed.In the present embodiment, by changing described two pieces
The transparent film layer pasted on the inwall of transparent plate, change the degree of roughness for the fracture faces that crack component is formed, for simulating
The crack inwall wall of caused different frictional resistances in actual fracturing process.
Alternatively, the outer wall of the transparent plate is provided with grid lines, in order to estimate that crack group is observed in experimentation
The amount of the liquid injected in part.The grid lines can be formed by directly being scribbled on the outer wall of transparent plate, or by
Paste the hyaline membrane with grid lines on the outer wall of transparent plate to be formed, the present embodiment is not especially limited this.
The utility model embodiment for crack component by setting multiple inlet attacks and multiple outlet connections, and entrance
Joint, outlet connection are to be uniformly distributed along the length direction of frame where inlet attack, it is possible to achieve the function of simulation wellbore hole；
By setting multigroup connection joint on two pieces of transparent plates, the inlet attack for connecting joint and other crack components is passed through soft
Pipe connects, it is possible to achieve the adjustable angle between the component of crack so that the form of complex fracture model configuration is more various.
Embodiment three
Fig. 5 is the schematic diagram for the complex fracture model configuration that the utility model embodiment three provides.In above-described embodiment one
Or on the basis of embodiment two, as shown in figure 5, complex fracture model configuration also includes at least one support bar 201, the support
Bar 201 is the length-adjustable expansion link with locked part, and the both ends of each support bar 201 are rotatably connected at phase
Between two adjacent secondary crack components 202 and 203, or it is rotatably connected at the three-level crack of adjacent two
Between component.When the support bar 201 is locked, two secondary that each support bar 201 is rigidly connected adjacent are split
Seam component 202 and 203 or two three-level crack components for being rigidly connected adjacent.
In the present embodiment, support bar is connected on adjacent two cracks face by the universal joint in lockable direction so that institute
The both ends and crack component for stating support bar 201 are rotatably coupled.
The present embodiment passes through two secondary crack components in arbitrary neighborhood, or two described three of arbitrary neighborhood
Support bar is set between the component of level crack so that when injecting liquid to crack component, caused by being rigidly connected for support bar
Interfering between its crack component connected, so as to simulate interstitial interference in actual fracturing process, so as to
Truer simulation fracturing process so that obtained experimental data is more accurate.
Example IV
On the basis of any of the above-described embodiment, in the present embodiment, simulating the device of complex fracture sanding also includes the 3rd
Injection pump and drainage equipment.Wherein, the 3rd injection pump passes through through the 3rd pipeline of the first port to the confined pressure
Equipment water filling.The drainage equipment is used to discharge the water in the confined pressure equipment by the second port.
Preferably, institute's confined pressure device external is enclosed with metal framework, can bear to come to increase the confined pressure equipment 12
The pressure of internal water, enabling the default pressure reached is bigger.Alternatively, the confined pressure equipment for detachable cuboid or
Person's square, six faces of confined pressure equipment are easy to assemble and split by buckle clamping.
The present embodiment can inject water until the pressure of confined pressure equipment reclaimed water by setting the 3rd injection pump into confined pressure equipment
Reach default pressure by force, and metal framework is enclosed with confined pressure device external, enabling the default pressure reached is bigger；
After experiment terminates, the water in confined pressure equipment is discharged by drainage equipment.
Embodiment five
In actual applications, injected into crack after mulling liquid is completed, sanding terminates, also need it is counter arranged, by crack
In liquid discharge, while proppant is stayed in crack, to be formed by the effective fracture of the balanced filling of proppant.It is counter to be arranged
Simulated experiment can be by observing the anti-influence for being drained through proppant sedimentation in journey fracture.
On the basis of any of the above-described embodiment, in the present embodiment, simulating the device of complex fracture sanding also includes the
Two injection pumps, second injection pump is connected with multiple outlet connections of each crack component, for into the major fracture
Water filling, to increase the liquid in the crack component from outlet connection to the flowing velocity in inlet attack direction, so as to change
Become the speed that liquid is discharged during instead arranging.
The discharge capacity that the present embodiment passes through the second injection pump of control, thus it is possible to vary the speed that liquid is discharged during anti-row, from
And the influence that the speed difference that liquid during anti-row is discharged settles to proppant can be simulated.
Embodiment six
Fig. 6 is the method flow diagram for the simulation complex fracture sanding that the utility model embodiment six provides.This method is held
Row main body is the device for the simulation complex fracture sanding that any of the above-described device embodiment provides.As shown in fig. 6, this method include with
Lower step：
Step S601, the device for the simulation complex fracture sanding for meeting default experiment parameter, the default experiment ginseng are obtained
Number includes：The number of each crack component and annexation, each crack component angulation in complex fracture model configuration.
In actual applications, technical staff obtains complex fracture model configuration according to default experiment parameter, assembling is met,
Complex fracture model configuration is inserted in confined pressure equipment, the simulation complexity described in embodiment one is obtained according to assembling is actually needed
The device of crack sanding.
Step S602, the 3rd injection pump is controlled to the confined pressure equipment water filling, up to the confined pressure equipment reclaimed water
Pressure reaches default pressure.
After water filling terminates in confined pressure equipment, crack is in minimum slit width position.
Step S603, the first injection pump of control injects prepad fluid into the complex fracture model configuration, so that described multiple
Two pieces of transparent panels of each crack component open in the pressure effect lower slider of prepad fluid in miscellaneous results of fracture simulation structure, are split so as to simulate
Stitch generating process.
By injecting prepad fluid into crack component, pressure rise in the component of crack, when pressure reaches one in the component of crack
When determining degree, crack component is softened.Enter fashionable, startup when the fracture width that crack component is formed reaches permission proppant particles
Sand blender, mulling is carried out according to preset ratio, then enters mulling liquid pump in the component of crack.
Step S604, when the gap width in each crack component reaches predetermined width, control first injection
Pump injects mulling liquid into the complex fracture model configuration, to simulate sanding process.
Step S605, when the mulling liquid concentration in each crack component reaches preset concentration, first note is controlled
Enter pump to stop injecting mulling liquid into the complex fracture model configuration, simultaneously close off flow control valve.
In the present embodiment, when testing progress, microspur sensor, pressure gauge and the flowmeter that will can be set in device
The data gathered, import computer so that computer carries out real-time statistic analysis to the data of collection and exports real time data
Change curve；Also the real-time form that crack inner support agent is laid can be recorded by high-speed camera.After experiment terminates, by crack
Inside and outside carry out pressure release, the final form that proppant is laid can be more intuitively observed after removing confined pressure seal box.
The utility model embodiment gives the process for carrying out simulating that proppant is laid in complex fracture sanding, by by again
Miscellaneous results of fracture simulation structure 11 is placed in confined pressure equipment 12, by being full of the water with default pressure into confined pressure equipment 12, is made
Pressure of the complex fracture model configuration 11 in the confined pressure equipment 12 by ambient water must be placed in, so as to simulate should
Influence of the power to fracturing process；And the two pieces of transparent plates 114 and 115 for the crack component that the present embodiment provides can be in bound edge
Slided in the chute that frame 16 is formed and produce relative displacement, when not injecting liquid to crack component, in the reclaimed water of confined pressure equipment 12
Under pressure, gap between two pieces of flat boards is into closure state；With the increase of amount of liquid in injection crack component, when in the component of crack
Two pieces of flat boards by the pressure of liquid be more than its by the reclaimed water of confined pressure equipment 12 pressure when, the gap between two pieces of flat boards is more next
It is wider, so as to simulate the forming process in crack in actual fracturing process, so as to truer simulation fracturing process, make
The experimental data that must be obtained is more accurate.
Embodiment seven
On the basis of above-described embodiment six, first injection pump is controlled to the complex fracture model configuration described
Before middle injection mulling liquid, in addition to：Control back pressure apparatus conveys into the complex fracture model configuration in major fracture component
Gas, to be produced from gas pressure of the outlet connection of the major fracture component to inlet attack direction.
Due to reality fracturing process in caused crack since the entrance of crack it is more and more narrow, liquid is being injected into crack
During body, the resistance reverse with liquid injection direction can be produced in crack.
The back pressure apparatus that the utility model embodiment is connected by setting with multiple outlet connections of the major fracture component,
The back pressure apparatus is used to convey gas into the major fracture, to be produced from the outlet connection of the major fracture component to entrance
The gas pressure in joint direction, to inject resistance during liquid in simulation fracture.
Embodiment eight
After the process that proppant is laid in above-described embodiment six terminates, it can also carry out simulating in complex fracture sanding
It is counter to be drained through journey.On the basis of above-described embodiment six, stop in first injection pump into the complex fracture model configuration
Inject after mulling liquid, in addition to：Open the out splice going splice of each crack component in the complex fracture model configuration；Described in opening
Flow control valve；The second injection pump is controlled to convey clear water into the major fracture, to simulate the simulation complex fracture sanding
Returning for mulling liquid in device is drained through journey.
After the process that proppant is laid terminates, higher pressure in the component of crack be present, now stop the first injection pump,
The out splice going splice of crack porch is opened, the liquid of crack component internal can return from porch to be ejected, and the row's of returning discharge capacity passes through
Flow control valve is controlled.After pressure is less than the pressure of confined pressure equipment reclaimed water fracture component in the component of crack, crack group
Part can close, the liquid during this in component of crack by crack component the lasting row of returning of extruding, until crack is propped up
Support agent support, the row of returning simulated experiment terminates, and now, the water in confined pressure equipment is discharged, can observe proppant backflow situation with
Whaleback metamorphosis.
The discharge capacity that the present embodiment passes through the second injection pump of control, thus it is possible to vary the speed that liquid is discharged during anti-row, from
And the influence that the speed difference that liquid during anti-row is discharged settles to proppant can be simulated.
In several embodiments provided by the utility model, it should be understood that disclosed apparatus and method, Ke Yitong
Other modes are crossed to realize.For example, device embodiment described above is only schematical, for example, the unit is drawn
Point, only a kind of division of logic function, there can be other dividing mode when actually realizing, such as multiple units or component can
To combine or be desirably integrated into another system, or some features can be ignored, or not perform.It is another, it is shown or beg for
The mutual coupling of opinion or direct-coupling or communication connection can be the INDIRECT COUPLINGs by some interfaces, device or unit
Or communication connection, can be electrical, mechanical or other forms.
The unit illustrated as separating component can be or may not be physically separate, show as unit
The part shown can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs
's.
In addition, each functional unit in each embodiment of the utility model can be integrated in a processing unit,
Can be that unit is individually physically present, can also two or more units it is integrated in a unit.It is above-mentioned integrated
Unit can both be realized in the form of hardware, can also be realized in the form of hardware adds SFU software functional unit.
The above-mentioned integrated unit realized in the form of SFU software functional unit, can be stored in one and computer-readable deposit
In storage media.Above-mentioned SFU software functional unit is stored in a storage medium, including some instructions are causing a computer
Equipment (can be personal computer, server, or network equipment etc.) or processor (processor) perform the utility model
The part steps of each embodiment methods described.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage
(Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disc or CD
Etc. it is various can be with the medium of store program codes.
Those skilled in the art can be understood that, for convenience and simplicity of description, only with above-mentioned each functional module
Division progress for example, in practical application, can be complete by different functional modules by above-mentioned function distribution as needed
Into the internal structure of device being divided into different functional modules, to complete all or part of function described above.On
The specific work process of the device of description is stated, the corresponding process in preceding method embodiment is may be referred to, will not be repeated here.
Finally it should be noted that：Various embodiments above is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, either to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type.
Claims (10)
- A kind of 1. device for simulating complex fracture sanding, it is characterised in that including：Complex fracture model configuration, confined pressure equipment, mix Sand equipment, the first injection pump and control module；The complex fracture model configuration include a major fracture component, be connected with the major fracture component at least one time Crack component and at least one three-level crack component being connected with least one crack component；The crack component is by two pieces of transparent plates be arrangeding in parallel and by the gap between two pieces of transparent plate inwalls The bound edge frame composition of sealing, the bound edge frame edge are formed for two pieces of transparent plates perpendicular to the direction of the transparent plate The chute of slip；Inlet attack for injecting liquid is connected with a pair of parallel frame of the bound edge frame and for discharge liquor The outlet connection of body, be connected with two pieces of transparent plate outer walls for connecting other crack components connection joints, it is described enter Mouthful joint, the outlet connection and described to connect joint salable；The confined pressure equipment is the sealed transparent casing with first port and second port, and being full of in the confined pressure equipment has During the water of default pressure, pressure of the complex fracture model configuration in the confined pressure equipment by ambient water is placed in；The sand blender is used for fracturing fluid and mixed with proppants into mulling liquid, and the output port of the sand blender passes through the One pipeline is connected with the input port of first injection pump；The output port of first injection pump passes through the second pipeline through the first port and the major fracture component Inlet attack connects, to convey prepad fluid or mulling liquid into the major fracture component；The control module by adjust the first injection pump described in the Flux Valve Control that is installed on second pipeline to The discharge capacity of the major fracture component injection liquid.
- 2. device according to claim 1, it is characterised in thatThe crack component includes multiple inlet attacks and multiple outlet connections, and the inlet attack is along place frame Length direction be uniformly distributed, length direction of the outlet connection along place frame is uniformly distributed；Correspondingly, the output port of first injection pump passes through major fracture group described in the second pipeline through the first port Multiple inlet attacks connection of part.
- 3. device according to claim 2, it is characterised in thatThe crack component includes multigroup connection joint, length direction of the every group of connection joint along frame where the inlet attack It is uniformly distributed；One group of connection joint of the major fracture component connects with the inlet attack of the secondary crack component by the way that flexible pipe is corresponding, institute State the adjustable angle between major fracture component and the secondary crack component；One group of connection joint of the secondary crack component connects with the inlet attack of three-level crack component by the way that flexible pipe is corresponding, Adjustable angle between the secondary crack component and three-level crack component.
- 4. device according to claim 3, it is characterised in that also including back pressure apparatus,The back pressure apparatus is connected with multiple outlet connections of the major fracture component, for conveying gas into the major fracture Body, to be produced from gas pressure of the outlet connection of the major fracture component to inlet attack direction.
- 5. according to the device described in claim any one of 1-4, it is characterised in that also include：The microspur sensor being installed on each crack component,The microspur sensor first component and second component are respectively arranged on two pieces of transparent plates of the crack component, and The position line of the first component and the second component is perpendicular to two pieces of transparent plates, for measuring the crack group The distance between two pieces of transparent plates of part.
- 6. according to the device described in claim any one of 1-4, it is characterised in thatShaggy transparent film layer is pasted with the inwall of two pieces of transparent plates.
- 7. according to the device described in claim any one of 1-4, it is characterised in that also include：At least one support bar, the branch Strut is the length-adjustable expansion link with locked part；The both ends of each support bar are rotatably connected between the secondary crack component of adjacent two, or rotatably Ground is connected to two adjacent three-level crack components；When the support bar is locked, each support bar is rigidly connected the secondary crack component of adjacent two or just Property the adjacent two three-level crack components of connection.
- 8. according to the device described in claim any one of 1-4, it is characterised in that also include：Second injection pump,Second injection pump is connected with multiple outlet connections of each crack component, for the water filling into the major fracture, To increase the liquid in the crack component from outlet connection to the flowing velocity in inlet attack direction.
- 9. device according to claim 1, it is characterised in that also include：3rd injection pump and drainage equipment,3rd injection pump passes through through the 3rd pipeline of the first port to the confined pressure equipment water filling；The drainage equipment is used to discharge the water in the confined pressure equipment by the second port.
- 10. device according to claim 7, it is characterised in that institute's confined pressure device external is enclosed with metal framework.
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| CN201720326522.XU CN206707687U (en) | 2017-03-30 | 2017-03-30 | Simulate the device of complex fracture sanding |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106869898A (en) * | 2017-03-30 | 2017-06-20 | 中国石油大学(北京) | Simulate the device and method of complex fracture sanding |
| CN108447571A (en) * | 2018-05-10 | 2018-08-24 | 上海核工程研究设计院有限公司 | The runner simulator of core process pipe leak rate test |
| CN108590630A (en) * | 2018-04-16 | 2018-09-28 | 西南石油大学 | A kind of the fracturing fluid leak device and computational methods of multiple-limb seam |
| CN110469311A (en) * | 2019-08-28 | 2019-11-19 | 赣江新区澳博颗粒科技研究院有限公司 | The coarse fracture network visualization device of dynamic expansion under the conditions of a kind of simulation confining pressure |
| CN114961683A (en) * | 2022-04-28 | 2022-08-30 | 西南石油大学 | Method for optimizing fracture plate for temporary plugging experiment in hydraulic fracture |
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2017
- 2017-03-30 CN CN201720326522.XU patent/CN206707687U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106869898A (en) * | 2017-03-30 | 2017-06-20 | 中国石油大学(北京) | Simulate the device and method of complex fracture sanding |
| CN106869898B (en) * | 2017-03-30 | 2018-04-13 | 中国石油大学(北京) | Simulate the device and method of complex fracture sanding |
| CN108590630A (en) * | 2018-04-16 | 2018-09-28 | 西南石油大学 | A kind of the fracturing fluid leak device and computational methods of multiple-limb seam |
| CN108590630B (en) * | 2018-04-16 | 2019-02-22 | 西南石油大学 | A kind of the fracturing fluid leak device and calculation method of multiple-limb seam |
| CN108447571A (en) * | 2018-05-10 | 2018-08-24 | 上海核工程研究设计院有限公司 | The runner simulator of core process pipe leak rate test |
| CN110469311A (en) * | 2019-08-28 | 2019-11-19 | 赣江新区澳博颗粒科技研究院有限公司 | The coarse fracture network visualization device of dynamic expansion under the conditions of a kind of simulation confining pressure |
| CN110469311B (en) * | 2019-08-28 | 2021-10-01 | 赣江新区澳博颗粒科技研究院有限公司 | Dynamic expansion coarse crack network visualization device under simulated confining pressure condition |
| CN114961683A (en) * | 2022-04-28 | 2022-08-30 | 西南石油大学 | Method for optimizing fracture plate for temporary plugging experiment in hydraulic fracture |
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