CN209145580U - A kind of three axis multiple cracks hydraulic fracturing experiments devices - Google Patents
A kind of three axis multiple cracks hydraulic fracturing experiments devices Download PDFInfo
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- CN209145580U CN209145580U CN201821964475.2U CN201821964475U CN209145580U CN 209145580 U CN209145580 U CN 209145580U CN 201821964475 U CN201821964475 U CN 201821964475U CN 209145580 U CN209145580 U CN 209145580U
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Abstract
The application discloses a kind of three axis multiple cracks hydraulic fracturing experiments devices, including Pressure chamber, hydraulic loading device, flood pattern, Pressure chamber includes three axocoel cavitys, the fixed loading device in intracorporal three sides of three axocoel chambers, loading device fixes load plate, three directional loads are applied to sample, simulate the multiple cracks hydraulic fracturing of three axis difference stress fields, hydraulic fracturing job is realized using the fracturing fluid injection that Pneumatic booster double pump provides constant current mode.Orientation observation window on front side of three axocoel cavitys realizes the real time monitoring of hydraulic fracturing experiments by multi-channel information recorder and video imaging instrument using high-strength transparence acrylic board material, while monitoring system monitoring crackle using acoustic emission signal.The Macro or mass analysis recorded a video by the pressure record information, acoustic emission monitor(ing) information and fracturing process of pressure, hydraulic loading device to fracturing fluid is it can be concluded that stress and water injection pressure changing rule and crack propagation law in hydraulic fracturing process.
Description
Technical field
The utility model relates to indoor multiple cracks hydraulic fracturing experiments technical fields, and in particular to one kind is in three-dimensional ground stress
Off field, the experimental provision of the multiple cracks hydraulic fracturing of different development construction reservoirs can be simulated.
Background technique
Hydraulic fracturing technology is an important oil-gas reservoir reservoir reconstruction yield-increasing technology, the development existing more than 50 in China
Year, with the exploitation of unconventional petroleum resources such as tight gas, coal bed gas and shale gas etc. in recent years, Fracturing is
As the technical way of unconventional petroleum resources exploitation, wherein horizontal well multistage fracturing is the current highest pressure of pressure break efficiency
Split mode.Multistage fracturing is different from conventional single seam pressure break, and the induced stress that internal water flooding pressure against ambient in crack generates is mutual
Superposition significantly changes the stress field between seam, and the extension in crack is caused to deviate single seam pressure break direction.Study different crackle items
Crack propagation law plays vital work to the optimization of multiple cracks Fracturing Project under the pressure breaks design parameters such as number, different spacing
With.Since pressure break on-the-spot test testing cost is excessively high, previous research work of the laboratory experiment as site operation chooses true storage
The similar material model of layer protolith or the true reservoir of production, carrying out multiple cracks hydraulic fracturing experiments is under research multiple cracks pressure break
The important means of crack propagation law.Therefore, it is necessary to a kind of three axis multiple cracks hydraulic fracturing experiments systems be designed, for carrying out
The multiple cracks hydraulic fracturing experiments of complicated geological reservoir are studied.
Summary of the invention
In order to overcome the shortcomings of above-mentioned prior art, the utility model provides a kind of three axis multiple cracks hydraulic fracturing experiments dress
It sets and method, platform is provided for 3 D complex reservoir hydrfracturing in-house laboratory investigation, it can be achieved that 1200mm × 500mm ×
More means of the protolith sample of 500mm or the true triaxial multiple cracks hydraulic fracturing experiments of analog material sample and state of crack growth
Monitoring.
In order to solve the above-mentioned technical problem, the technical solution of the utility model is: three axis multiple cracks hydraulic fracturing of one kind is real
Experiment device, including Pressure chamber 1, flood pattern 2, pressure sensor group 5, information acquisition system, information acquisition system include multi-pass
Road information recorder 4, eight channel sound emission signal monitoring equipment 6, signal probe；
The Pressure chamber 1 includes three axocoel cavitys 101, observation window 102, rear load plate 104, upper load plate 105, Zuo Jia
Support plate 106, hydraulic loading device one, hydraulic loading device two, hydraulic loading device three, during the three axocoel cavitys 101 are
Square cavity empty, that only leading flank opens；
The leading flank Orientation observation window 102 of the three axocoel cavitys 101, the inside top of three axocoel cavitys 101, after
Fixed hydraulic loading device one, hydraulic loading device two, hydraulic loading device three, the hydraulic loaded dress are distinguished in side, right side
Set one, hydraulic loading device two, upper load plate 105, rear load plate are fixed in the pressure output part of hydraulic loading device three respectively
104, left load plate 106, upper load plate 105, rear load plate 104, left load plate 106 carry out the upside of sample, rear side, left side
Pressure is located at upper load plate 105, rear load plate 104, left load plate 106 and three axocoels to fix sample with pressure, sample is provided
In the space that cavity 101 is formed；
The perforative wellhole 103 of one or more front-rear direction is provided on the observation window 102；
The flood pattern 2 includes power source 201, water tank 202, Pneumatic booster double pump 203, liquid storage chamber 208, simulation note
Fluid cylinder 213, Electromagnetic Control valve 214, power source 201 are connect by pipeline with Pneumatic booster double pump 203, and water tank 202 passes through pipe
Road is connect with the suction inlet of Pneumatic booster double pump 203, and 208 bottom of liquid storage chamber is provided with liquid injection hole 209, top lock chamber
Lid 205, fluid hole 204 is provided in chamber lid 205, and the delivery outlet of Pneumatic booster double pump 203 passes through pipeline and 208 bottom of liquid storage chamber
The liquid injection hole 209 of setting connects, and has the hydraulic oil for being added to tracer as fracturing fluid 206 and distilled water in liquid storage chamber 208
207, hydraulic oil density is less than distilled water 207, and fracturing fluid 206 is located at the top of distilled water 207 and immiscible, fluid hole 204
It being connect by pipeline with simulation fluid injection cylinder 213, the fluid injection cylinder 213 is connect using the pipeline across wellhole 103 with pit shaft, and
Electromagnetic Control valve 214 is provided on the pipeline that fluid injection cylinder 213 is connect with pit shaft, Electromagnetic Control valve 214 is connected by route
It is connected to control switch, pit shaft is fixed in the hole of sample；
Pressure sensor group 5 includes fracturing fluid pressure sensor 212, hydraulic loading device one, hydraulic loading device two, liquid
The hydrostatic sensor of loading device is pressed, the multi-channel information recorder 4 passes through the pressure break in route and pressure sensor group 5
Hydraulic force snesor 212, hydrostatic sensor are connected；
Signal probe pastes specimen surface, and the probe of specimen surface passes through route and eight channel sound emission signal monitorings
Equipment 6 connects.
The inside tops of the three axocoel cavitys 101, rear side, right side difference fixed hydraulic loading device one, it is hydraulic plus
Carry the structure for setting two, hydraulic loading device three are as follows: the inside top of three axocoel cavitys 101 is fixed, and there are two along left and right directions
The upper side recess 109 of arrangement, for the hydraulic loading device one at fixed top, the rear side fixation inside three axocoel cavitys 101 is set
It sets there are two rear side notch 108, is used to fixed hydraulic loading device two, is fixedly installed a right groove 107 on the inside of right side,
For fixed hydraulic loading device three, the hydraulic loading device one, hydraulic loading device two, hydraulic loading device three are
Hydraulic jack, and a hydraulic jack is fixed in above-mentioned each groove.
The pressure output part difference of the hydraulic loading device one, hydraulic loading device two, hydraulic loading device three
The structure of load plate 105, rear load plate 104, left load plate 106 in fixation are as follows: hydraulic loading device one, hydraulic loading device
Two, the piston rod of the hydraulic jack of hydraulic loading device fixes upper load plate 105, rear load plate 104, left load plate respectively
106。
Three axis multiple cracks hydraulic fracturing experiments devices further include loading device control system 3, hydraulic loading device one, hydraulic
Loading device two, hydraulic loading device three hydraulic jack be connected with hydraulic pump, the oil inlet setting of each hydraulic jack
There is hydrostatic sensor, the hydrostatic sensor, hydraulic pump in pressure sensor group 5 are connected by route and loading device control system 3
It connects.
Three axis multiple cracks hydraulic fracturing experiments devices further include video imaging instrument 7, and the observation window 102 is acrylic
Plate, video imaging instrument 7 are set to the front of observation window 102, carry out Image Acquisition for the pressure break situation to sample.
The signal probe is at least 4, and 4 probes cannot be in the same plane of sample, split to realize
The positioning of line.
The quantity of the wellhole 103 is 3, and the quantity of pit shaft is 3.
Signal probe and eight channel sound emission signal monitorings are provided on the three axocoel cavitys 101 or observation window 102
6 connection line of equipment passes through hole.
The outside dimension of the three axocoel cavitys 101 is 1300mm × 550mm × 550mm, and the size of the sample is
1200mm × 500mm × 500mm, diameter 10mm, the deep 260mm in hole on sample, and quantity is identical as the quantity of pit shaft.
The beneficial effects of the utility model are:
1) a kind of three axis multiple cracks hydraulic fracturing experiments System and method fors of the utility model, structure is simple, easy to process, at
This is low；
2) the utility model carries out three axis multiple cracks hydraulic fracturing experiments, can effectively simulate true reservoir complex geological structure
Hydraulic fracturing crack initiation and crack propagation, three directional loads independent loads, more means monitoring cracks can study differently stress field item
The crack initiation of hydraulic fracturing crackle and propagation law under part, different crackle item numbers, different crack spacings.
3) the utility model experimental system respectively forms partial function independence, can be used for kinds of experiments, function is extensive.
Detailed description of the invention
Fig. 1 is a kind of three axis multiple cracks hydraulic fracturing experiments system structure diagrams of the utility model.
Fig. 2 is the utility model Pressure chamber structural schematic diagram.
Fig. 3 is the utility model flood pattern structural schematic diagram.
Appended drawing reference: 1- Pressure chamber, 2- flood pattern, 3- loading device control system, 4- multi-channel information recorder, 5-
Pressure sensor, eight channel sound emission signal monitoring equipment of 6-, 7- video imaging instrument, tri- axocoel cavity of 101-, 102- observation window,
103- wellhole, load plate after 104-, the upper load plate of 105-, the left load plate of 106-, 107- right groove, 108- rear side notch,
109- upper side recess, 201- power source, 202- water tank, 203- Pneumatic booster double pump, 204- fluid hole, 205- chamber lid, 206- pressure
Split liquid, 207- distilled water, 208- liquid storage chamber, 209- liquid injection hole, 210- chamber mount, 211- three-way connection, 212- pressure break is hydraulic
Force snesor, 213- simulation fluid injection cylinder, 214- Electromagnetic Control valve,
Specific embodiment
1-3 with reference to the accompanying drawing is further discussed below the utility model.
To define direction shown in Fig. 1, the direction definition towards observation window 102 is front side, otherwise is rear side, with a left side of Fig. 1
Side is defined as left side, and right side is defined as right side, the top defined towards the top of three axocoel cavitys 101, otherwise is lower section.
As shown in Figure 1, a kind of three axis multiple cracks hydraulic fracturing experiments systems include Pressure chamber 1, loading device control system 3
, flood pattern 2, information acquisition system, information acquisition system include multi-channel information recorder, pressure sensor group 5, eight channels
Acoustic emission signal monitoring device 6, signal probe, video imaging instrument 7.
In Fig. 2, the Pressure chamber 1 includes three axocoel cavitys 101, observation window 102, rear load plate 104, upper load plate
105, left load plate 106, the three axocoel cavitys 101, rear load plate 104, upper load plate 105,106 material of left load plate are
Cast steel, not comprising right groove 107, rear side notch 108, upper side recess 109 three axocoel cavitys 101 outside dimension be 1300mm
× 550mm × 550mm, the three axocoel cavitys 101 are hollow square cavity.
The inside top of three axocoel cavitys 101 described in Fig. 2 is fixed, and there are two the upper side recess arranged along left and right directions
109, for the hydraulic loading device one at fixed top, there are two the rear side fixed settings inside three axocoel cavitys 101, and rear side is recessed
Slot 108 is used to fixed hydraulic loading device two in the front-back direction, is fixedly installed a right groove 107 on the inside of right side, is used to
The hydraulic loading device three of fixed left and right directions, the hydraulic loading device one, hydraulic loading device two, hydraulic loading device
Three be hydraulic jack, and a hydraulic jack is fixed in above-mentioned each groove.
The observation window 102 of the fixed 800mm × 300mm × 300mm mm in the front side of three axocoel cavitys 101 described in Fig. 2, depending on
The setting of frequency imager 7 and the front of observation window 102, are provided with n(n=1 on observation window 102,2,3,4,5) a diameter 20mm
Wellhole 103, observation window 102 be acrylic board or cast steel plate, observation window 102 be nontransparent material when, it is impossible to using video at
As the imaging of instrument 7, it is only capable of the crack propagation situation using eight channel sound emission signal monitoring equipment detection sample, the number of wellhole 103
Mesh and spacing are customized according to experimental program.
Three axocoel cavitys, 101 bottom surface described in Fig. 2 is to close, three axocoel cavitys 101 placement 1200mm × 500mm ×
The cuboid sample and rear load plate 104 of 500mm, upper load plate 105, left load plate 106, hydraulic loading device one, it is hydraulic plus
The piston rod for carrying the hydraulic jack for setting two, hydraulic loading device fixes upper load plate 105, rear load plate 104, Zuo Jia respectively
Support plate 106, upper load plate 105, rear load plate 104, left load plate 106 press to the upside of sample, rear side, left side to consolidate
Determine sample, when observation window 102 is acrylic board, the on-load pressure of rear load plate 104 is less than the pressure for making 102 fragmentation of observation window
Power.
In Fig. 3, the flood pattern 2 includes power source 201, water tank 202, Pneumatic booster double pump 203, chamber lid
205, liquid storage chamber 208, chamber mount 210, three-way connection 211, fracturing fluid pressure sensor 212, simulation fluid injection cylinder 213, electromagnetism
Control valve 214, power source 201 are connect by pipeline with Pneumatic booster double pump 203, provide power for Pneumatic booster double pump 203,
Water tank 202 is connect by pipeline with the suction inlet of Pneumatic booster double pump 203, and the Pneumatic booster double pump 203 can realize high pressure
The uninterrupted output mode of the lower alternate constant current constant voltage of double pump.
208 bottom of liquid storage chamber described in Fig. 3 is provided with liquid injection hole 209, and top is fixed chamber lid 205, is arranged in chamber lid 205
There is fluid hole 204, the delivery outlet of Pneumatic booster double pump 203 is connected by the liquid injection hole 209 of pipeline and the setting of 208 bottom of liquid storage chamber
It connects, has the hydraulic oil for being added to tracer as fracturing fluid 206 and distilled water 207 in liquid storage chamber 208, hydraulic oil density, which is less than, steams
Distilled water 207, fracturing fluid 206 are located at the top of distilled water 207 and immiscible.
Distilled water 206 described in Fig. 3 can reduce the injury to pump by Pneumatic booster double pump 203, distilled water 207 it is close
Degree is greater than 206 density of hydraulic oil, and immiscible.Based on the feature, fracturing fluid 206 is pushed to be pressed using distilled water 207
Split experiment.
Chamber mount 210 described in Fig. 3 is fixed on 208 lower section of liquid storage chamber, is used to stablize placement and supports liquid storage chamber 208.
Fluid hole 204 by pipeline with simulate fluid injection cylinder 213 connect, and between connecting line on be provided with three-way connection, for pacifying
Fill fracturing fluid pressure sensor 212.
Fluid injection cylinder 213 described in Fig. 3 is connect with by pipeline pit shaft identical with 103 quantity of wellhole, and fluid injection cylinder 213
Electromagnetic Control valve 214 is provided on the pipeline connecting with pit shaft, Electromagnetic Control valve 214 can realize remote control in real time
System.
Pressure sensor group 5 described in Fig. 1 includes fracturing fluid pressure sensor 212, measurement hydraulic loading device one, liquid
Press loading device two, hydraulic loading device three each hydraulic cylinder hydraulic fluid pressure hydrostatic sensor, for acquire experiment
In the process when 212 fracturing experiments of fracturing fluid pressure sensor fracturing fluid pressure, hydraulic loading device one, hydraulic loading device
Two, the load of hydraulic loading device three.
Multi-channel information recorder 4 described in Fig. 1 passes through the fracturing fluid pressure sensing in route and pressure sensor group 5
Device 212, hydrostatic sensor are connected, and can at most acquire the data in 64 channels simultaneously.
Hydraulic loading device one, hydraulic loading device two, hydraulic loading device three be hydraulic jack be connected with it is hydraulic
It pumps, the hydrostatic sensor, hydraulic pump in pressure sensor group 5 are connect by route with loading device control system 3.
Eight channel sound emission signal monitoring equipment 6 described in Fig. 1 at least pastes specimen surface with 4 probes, and
4 probes cannot be in same plane, to realize the positioning of crackle.
7 be video imaging instrument, it can be achieved that imaging and record to the real-time high frequency of specimen surface described in Fig. 1.
A kind of three axis multiple cracks hydraulic fracturing experiments methods, comprising the following steps:
1) sampling or sample preparation: the rock sample of taking-up is processed into 1000mm × 500mm × 500mm cuboid block, in conjunction with more
Crackle experimental program (crackle item number, spacing etc.) drills through diameter 10mm, the hole of deep 260mm, hole lower part in sample corresponding position
20mm is reserved Open-Hole Section, is then cemented pit shaft and rock sample with high strength epoxy resin glue, glues sternly, prevents fracturing fluid from well
Wall leakage.Simultaneously it can also be based on the principle of similitude, utilize cement, stone according to mechanical properties of rock and complex geological structure data
Sand, gypsum, retarder make rock analog material sample, using the pre-buried pit shaft at shaft location when sample preparation, use striaght cement
It fills around the borehole wall, prevents the leakage of fracturing fluid.
2) it loads: in sample placement force storehouse and after fixed pit shaft, being put into load plate, it simultaneously will be hydraulic according to requirement of experiment
Loading device one, hydraulic loading device two, hydraulic loading device three load be slowly applied to setting value, until stable load,
Since three axocoel cavitys 101 are hollow, the only open square cavity of leading flank, and Orientation observation window 102 at the opening of front side, so
When hydraulic loading device one, hydraulic loading device two, hydraulic loading device three load, the three axocoel cavitys on loading device opposite
101 cavity wall or observation window supports sample；
3) multi-channel information recorder 4, eight channel sound emission signal monitoring equipment 6 and video hydraulic fracturing fluid injection: are opened
Imager 7 sets Pneumatic booster double pump 203 to the constant current mode of required flow, according to multiple cracks experimental program, while or according to
The secondary Electromagnetic Control valve 214 opened on specified pit shaft connection management, injects fracturing fluid by pit shaft in sample, works as crackle
When extending at specimen surface or when 212 pressure of fracturing fluid pressure sensor is down to 0.5MPa or less, stop fluid injection；
4) the eight channel sound emission signal monitoring equipment of information and fracturing process acquired by multi-channel information recorder
The information of acquisition, the distribution of the crack form of sample, tracer carries out after information and slicing pressure break that video imaging instrument 7 acquires
Analysis summary, stress variation and crack propagation law in available fracturing process.
According to approach described above, following hydraulic fracturing experiments are carried out:
It will bore sample and be cut into 1000mm × 500mm × 500mm cube block；It is measured using graduated scale and marks pressure
Wellbore locations in scheme are split, drill through diameter 10mm, the hole of deep 260mm centered on mark point using drilling machine；By what is processed
Sample has drilling side is corresponding with Pressure chamber water injection hole side to place.It is marked at simulation borehole wall one end 240mm, within its scope
It uniformly smears high strength epoxy resin glue to apply, be fixed in above-mentioned drilling later.Load plate is placed, while slowly applying three-dimensional and carrying
Lotus is to experimental design value until stable load.Pneumatic booster double pump is set using required constant flow rate to export as constant current mode, is opened
Each valve switch on liquid injection system route runs Pneumatic booster double pump, each fluid injection is simultaneously or sequentially opened according to experimental program
Hole valve opens simultaneously acoustic emission signal monitoring device, video recording equipment starts to acquire.It is seen in conjunction with acoustic emission signal result, video recording
Survey and fracturing fluid pressure history, when at the crack propagation to specimen surface or in pressure curve pressure lower than after 0.5MPa,
Stop fluid injection.It Saves and Closes information acquiring instrument, acoustic emission signal monitoring device and video recording equipment, analysis summary and obtains multiple cracks
Liquid filling pressure variation and crack propagation law in hydraulic fracturing process.
Claims (9)
1. a kind of three axis multiple cracks hydraulic fracturing experiments devices, including Pressure chamber (1), flood pattern (2), pressure sensor group
(5), information acquisition system, information acquisition system include multi-channel information recorder (4), eight channel sound emission signal monitoring equipment
(6), signal probe, it is characterised in that:
The Pressure chamber (1) includes three axocoel cavitys (101), observation window (102), rear load plate (104), upper load plate
(105), left load plate (106), hydraulic loading device one, hydraulic loading device two, hydraulic loading device three, three axocoels
Cavity (101) is square cavity hollow, that only leading flank opens；
The leading flank Orientation observation window (102) of the three axocoel cavitys (101), the inside top of three axocoel cavitys (101), after
Fixed hydraulic loading device one, hydraulic loading device two, hydraulic loading device three, the hydraulic loaded dress are distinguished in side, right side
Set pressure output part fixed upper load plate (105), the rear load respectively of one, hydraulic loading device two, hydraulic loading device three
Plate (104), left load plate (106), upper load plate (105), rear load plate (104), left load plate (106) to the upside of sample,
Rear side, left side are pressed to fix sample and provide pressure, and sample is located at upper load plate (105), rear load plate (104), a left side
In the space that load plate (106) and three axocoel cavitys (101) are formed；
The perforative wellhole of one or more front-rear direction (103) is provided on the observation window (102)；
The flood pattern (2) include power source (201), water tank (202), Pneumatic booster double pump (203), liquid storage chamber (208),
Fluid injection cylinder (213), Electromagnetic Control valve (214) are simulated, power source (201) is connect by pipeline with Pneumatic booster double pump (203),
Water tank (202) is connect by pipeline with the suction inlet of Pneumatic booster double pump (203), and the liquid storage chamber (208) bottom is provided with
Liquid injection hole (209), top is fixed chamber lid (205), is provided with fluid hole (204) in chamber lid (205), Pneumatic booster double pump (203)
Delivery outlet connect with the liquid injection hole (209) that liquid storage chamber (208) bottom is arranged by pipeline, liquid storage chamber (208) is interior to be added to
The hydraulic oil of tracer is less than distilled water (207) as fracturing fluid (206) and distilled water (207), hydraulic oil density, fracturing fluid
(206) positioned at the top of distilled water (207) and immiscible, fluid hole (204) by pipeline and simulation fluid injection cylinder (213) even
It connects, the fluid injection cylinder (213) is connect using the pipeline across wellhole (103) with pit shaft, and fluid injection cylinder (213) is connect with pit shaft
Pipeline on be provided with Electromagnetic Control valve (214), Electromagnetic Control valve (214) has control switch, well by connection
Cylinder is fixed in the hole of sample；
Pressure sensor group (5) includes fracturing fluid pressure sensor (212), hydraulic loading device one, hydraulic loading device two, liquid
The hydrostatic sensor of loading device is pressed, the multi-channel information recorder (4) passes through in route and pressure sensor group (5)
Fracturing fluid pressure sensor (212), hydrostatic sensor are connected；
Signal probe pastes specimen surface, and the probe of specimen surface passes through route and eight channel sound emission signal monitoring equipment
(6) it connects.
2. three axis multiple cracks hydraulic fracturing experiments device according to claim 1, it is characterised in that: the three axocoel chambers
Fixed hydraulic loading device one, hydraulic loading device two, hydraulic loading device are distinguished in the inside top of body (101), rear side, right side
Three structure are as follows: the inside top of three axocoel cavitys (101) is fixed, and there are two the upper side recess arranged along left and right directions
(109), for the hydraulic loading device one at fixed top, the internal rear side fixed setting of three axocoel cavitys (101) is there are two after
Side groove (108) is used to fixed hydraulic loading device two, is fixedly installed a right groove (107) on the inside of right side, is used to solid
Determine hydraulic loading device three, the hydraulic loading device one, hydraulic loading device two, hydraulic loading device three are hydraulic thousand
Jin top, and a hydraulic jack is fixed in above-mentioned each groove.
3. three axis multiple cracks hydraulic fracturing experiments device according to claim 2, it is characterised in that: the hydraulic loaded
Device one, hydraulic loading device two, hydraulic loading device three pressure output part respectively fixed upper load plate (105), it is rear plus
The structure of support plate (104), left load plate (106) are as follows: hydraulic loading device one, hydraulic loading device two, hydraulic loading device
The piston rod of hydraulic jack fixes upper load plate (105), rear load plate (104), left load plate (106) respectively.
4. three axis multiple cracks hydraulic fracturing experiments device according to claim 3, it is characterised in that: further include loading device
Control system (3), hydraulic loading device one, hydraulic loading device two, hydraulic loading device three hydraulic jack be connected with liquid
Press pump, the oil inlet of each hydraulic jack are provided with hydrostatic sensor, hydrostatic sensor, liquid in pressure sensor group (5)
Press pump is connect by route with loading device control system (3).
5. three axis multiple cracks hydraulic fracturing experiments device according to claim 4, it is characterised in that: further include video imaging
Instrument (7), the observation window (102) are acrylic board, and video imaging instrument (7) is set to the front of observation window (102), is used for
Image Acquisition is carried out to the pressure break situation of sample.
6. three axis multiple cracks hydraulic fracturing experiments device according to claim 4, it is characterised in that: the signal probe
At least 4, and 4 probes cannot be in the same plane of sample, to realize the positioning of crackle.
7. three axis multiple cracks hydraulic fracturing experiments device according to claim 1-5, it is characterised in that: described
The quantity of wellhole (103) is 3, and the quantity of pit shaft is 3.
8. three axis multiple cracks hydraulic fracturing experiments device according to claim 1-5, it is characterised in that: described
Signal probe is provided on three axocoel cavitys (101) or observation window (102) to connect with eight channel sound emission signal monitoring equipment (6)
Route passes through hole.
9. three axis multiple cracks hydraulic fracturing experiments device according to claim 5, it is characterised in that: the three axocoel chambers
The outside dimension of body (101) is 1300mm × 550mm × 550mm, and the size of the sample is 1200mm × 500mm × 500mm, examination
Diameter 10mm, the deep 260mm in hole on sample, and quantity is identical as the quantity of pit shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821964475.2U CN209145580U (en) | 2018-11-27 | 2018-11-27 | A kind of three axis multiple cracks hydraulic fracturing experiments devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821964475.2U CN209145580U (en) | 2018-11-27 | 2018-11-27 | A kind of three axis multiple cracks hydraulic fracturing experiments devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209145580U true CN209145580U (en) | 2019-07-23 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056335A (en) * | 2018-11-27 | 2019-07-26 | 安阳工学院 | Three axis multiple cracks hydraulic fracturing experiments devices of one kind and experimental method |
| CN110617045A (en) * | 2019-10-09 | 2019-12-27 | 西南石油大学 | Crack initiation propagation and supporting crack stress sensitivity evaluation device and method |
| CN111119831A (en) * | 2020-02-27 | 2020-05-08 | 山东大学 | Indoor simulation test device for staged fracturing of horizontal well and operation method thereof |
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2018
- 2018-11-27 CN CN201821964475.2U patent/CN209145580U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056335A (en) * | 2018-11-27 | 2019-07-26 | 安阳工学院 | Three axis multiple cracks hydraulic fracturing experiments devices of one kind and experimental method |
| CN110056335B (en) * | 2018-11-27 | 2023-11-03 | 安阳工学院 | Triaxial multi-crack hydraulic fracturing experimental device and experimental method |
| CN110617045A (en) * | 2019-10-09 | 2019-12-27 | 西南石油大学 | Crack initiation propagation and supporting crack stress sensitivity evaluation device and method |
| CN111119831A (en) * | 2020-02-27 | 2020-05-08 | 山东大学 | Indoor simulation test device for staged fracturing of horizontal well and operation method thereof |
| CN111119831B (en) * | 2020-02-27 | 2023-10-17 | 山东大学 | Horizontal well staged fracturing indoor simulation test device and operation method thereof |
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