CN106501488A - True triaxial sand fracturing testing machine and its test method - Google Patents
True triaxial sand fracturing testing machine and its test method Download PDFInfo
- Publication number
- CN106501488A CN106501488A CN201611073418.0A CN201611073418A CN106501488A CN 106501488 A CN106501488 A CN 106501488A CN 201611073418 A CN201611073418 A CN 201611073418A CN 106501488 A CN106501488 A CN 106501488A
- Authority
- CN
- China
- Prior art keywords
- pressure
- fracturing fluid
- piston
- container
- plunger displacement
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Food Science & Technology (AREA)
- Analytical Chemistry (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Remote Sensing (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention relates to a kind of true triaxial sand fracturing testing machine, including confined pressure system and injected system, the injected system includes arranging two piston sheet baffle plates in pressure break liquid container I, pressure break liquid container II and piston container, piston container.Its test method is comprised the following steps：In pressure break liquid container II, sand fracturing fluid is taken in stirring formation, in pressure break liquid container I injects preposition fracturing fluid；By preposition fracturing fluid and take sand fracturing fluid and be injected in the middle part cavity and upper chamber of piston container using pressure respectively；By constant pressure constant speed plunger displacement pump I and/or constant pressure constant speed plunger displacement pump II, to the lower cavity internal drainage of piston container；Preposition fracturing fluid, taking sand fracturing fluid and pressure break being carried out for putting fracturing fluid and being implanted sequentially down-hole rock core, pressure break takes out down-hole rock core after terminating, and observes crack spread scenarios.Technical scheme is easily understood, simple operation, can achieve being uniformly controlled for confined pressure system and injected system, and is conveniently replaceable fracturing fluid.
Description
Technical field
The invention belongs to Reservoir Development technical field, and in particular to a kind of true triaxial sand fracturing testing machine and its test
Method.
Background technology
In developing of reservoirs, as the hyposmosis geological characteristics of reservoir make oil gas be obstructed in migration process, this
When sand fracturing become the important means of the such oil reservoir of Efficient Development.Complexity can be formed, there is high water conservancy diversion by sand fracturing
The extensive fracture network of ability, so as to increasing the drainage area of oil gas, reducing the flow resistance of reservoir hydrocarbons, therefore carries out indoor
Physical simulation experiment, the crack initiation and propagation behavior tool for studying crack are of great significance.Pressure break scene often adopts plus sand
The mode of pressure break, crack scale as needed and the volume of fracturing fluid required for the long calculating of support seam, according to prepad fluid, take sand
Liquid, it is implanted sequentially inside reservoir for the accounting for putting liquid.Laboratory test prior art true triaxial experimental provision is mainly by true triaxial
Experiment frame, three axle stabilizing hydraulic pressure sources, oil water separator, MTS superchargings and the composition such as controller, data acquisition and processing system, enter
Row sand fracturing operation often can only inject the fracturing fluid of single effect toward rock, it is impossible to true simulated field fracturing process,
And in the aspect Shortcomings such as pressure stability, conventional efficient, operability, safety and maintaining.One side mould
Three axles for intending formation rock stress add confining pressure device separate by two respectively with the injection device of simulation fracturing process
System control, control cannot be coordinated therebetween in identical platform, simultaneously for High-Voltage Experimentation, the unified prison of shortage
Control measure, this not only adds operation sequence, affects conventional efficient, but also bring certain potential safety hazard；On the other hand by
Pressurization operation is carried out in the form of plunger displacement pump in the stabilizing hydraulic pressure source for adding three axle confined pressures, it is impossible to which compression rate is effectively controlled
System, the three axle pressure reduction so as to cause rock mass are excessive, and breaking deformation occurs, and affect experiment effect；In addition the dismounting of oil isolated from water device
Not easy to operate, there is certain difficulty in terms of fracturing fluid is changed.
With deepening continuously for oil-gas reservoir research range, existing equipment cannot meet the requirement of experiment, and fracturing fluid is acted on
Single, it is not inconsistent with live real processes.Between fracturing unit, the control line of connection, high pressure line are various, bring certain safety hidden
Suffer from, be also not easy to maintain.Therefore it is badly in need of a kind of new true triaxial sand fracturing testing machine of exploitation and its test method, very
Real simulated field sand fracturing, to improve operability and the safety of experiment, the pressure of as true as possible simulation Rock in Well
Split process.
Content of the invention
For solving problems of the prior art, the present invention provides a kind of true triaxial sand fracturing testing machine, including enclosing
Pressure system, injected system and true triaxial test frame, the confined pressure system and the injected system are connected with the true triaxial test frame
Connect, in the true triaxial test frame, place down-hole rock core；The injected system and the confined pressure system are connected with computer, described
Injected system includes pressure break liquid container I, pressure break liquid container II and piston container, installs blender in the pressure break liquid container II
Structure, the rabbling mechanism are connected with computer, setting piston sheet baffle plate I and piston sheet baffle plate II in the piston container, two
The middle part of piston sheet baffle plate is open.
The present invention true triaxial sand fracturing testing machine pressure break liquid container and inject container（That is piston container）Separately set
Meter, is so conveniently replaceable fracturing fluid.When needing to change fracturing fluid, only need to operate in pressure break liquid container, by fracturing fluid
The tapping valve of container lower end is opened, and discharges the fracturing fluid in container, then injects new pressure at the opening of container upper end
Split liquid, it is also possible to first cleaning container, reinject new fracturing fluid.And in prior art, pressure break liquid container and inject container
By a device（Oil isolated from water device）Realize, when needing to change fracturing fluid, oil isolated from water device is taken apart, is poured out in container
Then piston sheet in container is pushed to container bottom manually or using instrument, then is noted in piston sheet upper chamber by water, oil
Enter new fracturing fluid, operating difficultiess, container are difficult to clean up, and change fracturing fluid every time and will dismantle oil isolated from water device,
After dismantling several times, the sealing for causing oil isolated from water device is deteriorated, part connection loosens, and also results in the essence of injection liquid
Degree reduces, pressure break state labile.
Preferably, the upper end of the pressure break liquid container I is connected with gas cylinder by pipeline, installs switch valve on pipeline
Door I；The lower end of the pressure break liquid container I is connected with the middle part cavity of piston container by pipeline, installs controlled valve on pipeline
Ⅱ.
In any of the above-described scheme preferably, the bottom of the pressure break liquid container I arranges tapping valve I.
In any of the above-described scheme preferably, the upper end of the pressure break liquid container II is connected with gas cylinder by pipeline
Connect, controlled valve III is installed on pipeline；Upper chamber of the lower end of the pressure break liquid container II by pipeline with piston container connects
Connect, controlled valve IV is installed on pipeline.
In any of the above-described scheme preferably, the bottom of the pressure break liquid container II arranges tapping valve II.
In any of the above-described scheme preferably, the piston sheet baffle plate I and the piston sheet baffle plate II are by the piston
Container is divided into three cavitys.
In any of the above-described scheme preferably, piston sheet I and piston sheet II, two pistons are set in the piston container
Piece can be moved up and down.
In any of the above-described scheme preferably, the piston sheet I is in the top of the piston sheet baffle plate I, the piston
Piece II is in the top of the piston sheet baffle plate II.
In any of the above-described scheme preferably, the upper chamber of the piston container is by pipeline and the down-hole rock core
Connection, installs controlled valve V on pipeline；The middle part cavity of the piston container is connected with the down-hole rock core by pipeline, pipe
Controlled valve VI is installed on line；The lower cavity of the piston container is connected with tank by pipeline.
In any of the above-described scheme preferably, the tank by pipeline respectively with constant pressure constant speed plunger displacement pump I and constant pressure
Constant speed plunger displacement pump II connects.
In any of the above-described scheme preferably, the constant pressure constant speed plunger displacement pump I and the constant pressure constant speed plunger displacement pump II with
Computer connects.
In any of the above-described scheme preferably, the confined pressure system includes high pressure constant-flux pump I, high pressure constant-flux pump II and height
Pressure constant-flux pump III, three pump housings are connected with computer.
In any of the above-described scheme preferably, the high pressure constant-flux pump I is by before and after pipeline and the down-hole rock core
Two face connections, install counterbalance valve I on pipeline；The high pressure constant-flux pump II passes through the left and right two of pipeline and the down-hole rock core
Face connects, and installs counterbalance valve II on pipeline；The high pressure constant-flux pump III passes through the upper and lower surfaces of pipeline and the down-hole rock core
Connection, installs counterbalance valve III on pipeline.When the confined pressure for producing exceedes setting value, counterbalance valve is automatically opened up, and is unloaded and is depressed into setting value.
The present invention also provides a kind of true triaxial sand fracturing test method, is tried using any of the above-described kind of true triaxial sand fracturing
Machine is tested, which is comprised the following steps according to sequencing：
Step one：All of controlled valve and tapping valve is closed, fracturing fluid and proppant are injected into pressure break by a certain percentage
In liquid container II, mixing time is set, and is started rabbling mechanism and is stirred, formed and uniformly take sand fracturing fluid；First open
Closing valve III and controlled valve IV, then gas cylinder is opened, now take sand fracturing fluid and enter in the upper chamber of piston container；Treat
Take after sand fracturing fluid fully enters, first close gas cylinder, turn off controlled valve III and controlled valve IV；
Step 2：Preposition fracturing fluid is injected in pressure break liquid container I, first open controlled valve I and controlled valve II, then open height
Air bottle, now in the center lumen body of preposition fracturing fluid entrance piston container；After preposition fracturing fluid is fully entered, first close high
Air bottle, turns off controlled valve I and controlled valve II；
Step 3：Confined pressure value is set according to test requirements document, and passes through high pressure constant-flux pump I, high pressure constant-flux pump II and high pressure constant-flux pump
III three axial directions respectively to down-hole rock core apply confined pressure simultaneously；
Step 4：Controlled valve VI is opened, and starts constant pressure constant speed plunger displacement pump I and constant pressure constant speed plunger displacement pump II, if two plungers
Water in pump inner chamber is not full, then two plunger displacement pumps are filled water respectively from tank by pipeline, then carry out fracturing work；If
Water in two plunger displacement pump inner chambers is full, then directly carry out fracturing work；
Step 5：Displacement is set according to test requirements document, when displacement is less than or equal to 50ml/min, only constant pressure constant speed plunger
Lower cavity internal drainage of the pump I to piston container, now constant pressure constant speed plunger displacement pump II is standby, when constant pressure constant speed plunger
After water in pump I is all drained, constant pressure constant speed plunger displacement pump II starts the lower cavity internal drainage to piston container, now constant pressure and constant
Fast plunger displacement pump I absorbs water from tank；When displacement is more than 50ml/min, constant pressure constant speed plunger displacement pump I and constant pressure constant speed plunger displacement pump
II simultaneously to the lower cavity internal drainage of piston container；
Step 6：With constant pressure constant speed plunger displacement pump I and/or the drainage works of constant pressure constant speed plunger displacement pump II, preposition fracturing fluid injection
To in the rock core of down-hole, when the injection rate of preposition fracturing fluid reaches test requirements document, closing switch valve VI, while open switch valve
Door V, now takes sand fracturing fluid and is injected in the rock core of down-hole, and when the injection rate for taking sand fracturing fluid reaches test requirements document, closing is opened
Closing valve V, while opening controlled valve VI, now takes sand fracturing fluid for putting in fracturing fluid displacement pipeline, and is finally injected into
In the rock core of down-hole；
Step 7：With constant pressure constant speed plunger displacement pump I and/or the drainage works of constant pressure constant speed plunger displacement pump II, preposition fracturing fluid, sand is taken
Fracturing fluid and it is implanted sequentially in the rock core of down-hole for putting fracturing fluid, while observing the inlet pressure and time shown on computer
Variation relation curve, when inlet pressure drops to low spot, and when being in plateau, judges that fracturing process terminates, preserves computer
The data of record；
Step 8：Constant pressure constant speed plunger displacement pump I and constant pressure constant speed plunger displacement pump II is closed, and determines that inlet pressure is zero, while determining
The chamber pressure of two plunger displacement pumps is zero, if chamber pressure is not zero, needs to restart corresponding plunger displacement pump, the wink of startup
Between stop again by make chamber pressure vanishing；Open counterbalance valve I, counterbalance valve II and counterbalance valve III simultaneously, unload down-hole rock core
Confined pressure on three axial directions；
Step 9：Down-hole rock core is taken out from true triaxial test frame, crack spread scenarios are observed.
Preferably, the piston volume of a container is 2000ml.
In any of the above-described scheme preferably, to the injection of down-hole rock core preposition fracturing fluid, sand fracturing fluid is taken and for putting
The cumulative volume of fracturing fluid is 500-800ml.
In any of the above-described scheme preferably, to the injection of down-hole rock core preposition fracturing fluid, sand fracturing fluid is taken and for putting
Fracturing fluid is respectively 40%, 50% and the 10% of cumulative volume.
Proppant is not contained in preposition fracturing fluid, for pressing off the bottom of down-hole rock core, is extended and is expanded crack, be that crack is accurate
Standby abundant back-up sand space, waits the arrival of proppant；When sand fracturing fluid is taken in preparation, can be according to reservoir characteristic and technological requirement
From different fracturing fluid systems, for further expanding crack；Preposition fracturing fluid is for fracturing fluid is put, simply the work of the two
With difference, for fracturing fluid being put for conveying and laid proppant in seam, form the flow conductivity and geometry with design requirement
The proppant filling crack of shape, the sand fracturing fluid of taking in pit shaft is all replaced into Reservoirs, in order to avoid shaft bottom sand setting or sand
Card downhole tool.
In the true triaxial sand fracturing test of the present invention, the upper chamber of piston container takes sand fracturing fluid for injection,
Its volume is 500ml；The middle part cavity of piston container is used for injecting preposition fracturing fluid, and its volume is 1000ml；Piston container
Lower cavity is used for injecting water, and its volume is 500ml.The sand fracturing fluid of taking of injection must all be 500ml every time, will piston appearance
The upper chamber of device is filled up, and the volume of the preposition fracturing fluid of injection is at least preposition fracturing fluid, takes sand fracturing fluid and replace and put pressure break
The total amount of liquid.There is following 2 points of reasons：（1）Preposition fracturing fluid is initially injected, preposition fracturing fluid is from cavity in the middle part of piston container
Upper right side（That is the lower right of piston sheet baffle plate I）It is injected into inside the rock core of down-hole, piston sheet II is institute toward the volume for rising
The preposition fracturing fluid volume of injection；It is then injected into taking sand fracturing fluid, now piston sheet I and piston sheet II are simultaneously toward rising（By two
Individual piston sheet is considered as an entirety）, the volume of rising is injects the volume for taking sand fracturing fluid；Finally injection is replaced and puts fracturing fluid,
Now constant pressure constant speed plunger displacement pump I and constant pressure constant speed plunger displacement pump II push piston sheet II toward rising, and the volume of rising is to replace puts pressure
Split the volume of liquid.In whole process piston sheet II be all toward rise, and rise volume be preposition fracturing fluid, take sand pressure
Liquid is split, is replaced and is put fracturing fluid three's sum, because in whole fracturing process, liquid has certain compression, so being injected into work
In the middle part of plug container, the preposition fracturing fluid of cavity is at least three's sum.（2）Fill into the upper chamber of piston container and take sand pressure
Liquid is split, that is, injects 500ml, if do not filled, then when sand fracturing fluid is taken in displacement, most start that squeezed go out is upper chamber
Interior air, then starts injection again and takes sand fracturing fluid, and the preposition fracturing fluid for now being consumed takes sand fracturing fluid and air
Volume sum, and add the preposition fracturing fluid in center lumen body to be equal to preposition fracturing fluid, take sand fracturing fluid and replace and put fracturing fluid three
Person's sum, air may result in the insufficient infusion of preposition fracturing fluid.
In any of the above-described scheme preferably, in step 2, mixing time is at least 20min.
In any of the above-described scheme preferably, in step 3, three axle confined pressures are applied to down-hole rock core, X-direction is level
Maximum principal stress, Y-direction are horizontal minimum principal stress, and Z-direction is vertical stress, wherein the confined pressure of X-direction enclosing more than Y-direction
Pressure.
In any of the above-described scheme preferably, in step 5, displacement set point is 0-100ml/min.
In any of the above-described scheme preferably, described for fracturing fluid is put using preposition fracturing fluid, its effect is by pipeline
Interior take the displacement of sand fracturing fluid into rock core.
In order to overcome three axle pumping efficiencies in prior art inconsistent, lack unified operating platform, operation sequence is loaded down with trivial details,
Be difficult to change the defect such as fracturing fluid, the present invention from plus confined pressure system, pressure break liquid injection system, security system, computer acquisition and
Four aspects of control system are improved and have been innovated, and be enormously simplify the structure of true triaxial hydraulic fracturing testing machine, are being guaranteed
The overall operability of testing machine is greatly improved in the case of safety guarantee.
The true triaxial sand fracturing testing machine of the present invention, its confined pressure system are made up of three single pressure systems, each
Can pressurize simultaneously between system also can stepped pressure, isobaric can there is differential pressure again in three face confined pressures.Each single confined pressure
System is made up of silicone oil container, constant-flux pump, counterbalance valve and pipeline etc..Confined pressure medium adopts silicone oil, as silicone oil has brilliance
Thermostability, electrical insulating property, weatherability, hydrophobicity, physiological inertia and less surface tension, additionally have relatively low viscous temperature system
Number and higher resistance to compression, so silicone oil as pressure medium have efficiency high, have a safety feature, noiseless the features such as.High
Using double plunger reciprocating pump, imbibition plunger based on, another is kicker ram to pressure infuser pump, by the efficient of computer controls
Precision transfusion pumping system, it can be ensured that all there is under various use conditions higher transfusion precision and preferable repeatability to refer to
Mark.Injected system is made up of piston container, injected media container, fracturing fluid stirring container and the system of injecting.Piston container is not by
Rust Steel material is made, and its load rated safety pressure is 100MPa, volume is 2000ml；Piston container is separated into three by two piston sheets
In individual cavity, upper chamber and center lumen body, injection fracturing fluid, injects liquid in lower cavity.Injected media container is by rustless steel
Material is made, and its load rated safety pressure is 2MPa, volume is 2L.The container is with the preparing solution tank that scale is 1000ml, root
Different fracturing fluids are allocated in blend tank according to requirement of experiment, open the valve injection container below blend tank after the completion of allotment
In, it is then shut off preparing solution tank valve.Gas cylinder or air pressure pump is opened, injected media is pressed into piston using air pressure
In container.Fracturing fluid stirring container is made up of stainless steel material, and its load rated safety pressure is 2MPa, volume is 2L, inside sets motor
Rabbling mechanism, scalable rotating speed.There are proppant inlet and liquid injection port in fracturing fluid stirring container, according to test ratio note
Enter clear water and proppant, by computer controls rabbling mechanism, adjust to the rotating speed and mixing time for needing, utilize after stirring
Air pressure injects fracturing fluid in piston container.Assist system is made up of twin-tub constant pressure constant speed plunger pump and boosting liquid container.
The pressure of twin-tub constant pressure constant speed plunger displacement pump is 100MPa, flow velocity is 0-100ml/min, precision is 0.01ml/min.The plunger displacement pump
The characteristics of be start, stop, flow etc. is realized automatically controlling by computer program.The system design is compact, convenient and complete
Totally-enclosed, and Programmable Logic Controller and intelligent display screen are coordinated to the forward and back of plunger displacement pump, speed governing, tune using inlet servo motor
Pressure etc. carries out precise control, and the running status and failure for indicating plunger displacement pump using flash demo, curve show flow rate of liquid, flow
And the real-time change of pressure, with simple, convenient man-machine interface.Twin-tub constant pressure constant speed plunger displacement pump both can be single
Cylinder works independently, it is also possible to which twin-tub linkage is worked without interruption.Single cylinder, twin-tub work, have constant pressure, constant current, three kinds of works of tracking
Operation mode, meets the demand of different operating and test.In terms of security system, the testing machine of the present invention is high tension unit, is true
Experimental safe being protected, all relief valve being configured with the entrance of confined pressure system and injected system, safe threshold sensitivity height, the operation are just
Prompt, safe and reliable, when confined pressure or injection pressure exceed secure setting, relief valve can automatically open up release pressure, while
On computer arrange pressure upper limit value, when pressure exceed setting value when, computer sends order pump trip, with ensure pipeline and
The safety of operator.In terms of computer acquisition and control system, data collecting system can gather pressure, temperature, flow, perseverance
The instant numerical value such as pressure of fast constant pressure plunger displacement pump.For ensureing the reliability of certainty of measurement and control, using C168H digital collection controls
Fabrication, so that realize that digital collection is transmitted.Software is run under Windows7/XP environment, with gas parameter conversion, data
Analytic function.Test operation flow process shows on interface, can achieve human computer conversation, after operator set parameter, testing machine
Can operating alone, computer can the numerical value such as all pressure of automatic data collection, flow velocity.The data of computer acquisition after treatment may be used
Initial data form, analytical statement and curve chart is generated, while database file is generated so as to backup inquiry.
Description of the drawings
Fig. 1 is a preferred embodiment structural representation of the true triaxial sand fracturing testing machine according to the present invention；
Fig. 2 is the injected system structural representation of the embodiment illustrated in fig. 1 of the true triaxial sand fracturing testing machine according to the present invention；
Fig. 3 is the internal structure of the piston container of the embodiment illustrated in fig. 1 of the true triaxial sand fracturing testing machine according to the present invention
Schematic diagram；
Fig. 4 is the confined pressure system structure diagram of the embodiment illustrated in fig. 1 of the true triaxial sand fracturing testing machine according to the present invention.
Explanation is marked in figure：1- confined pressure systems, 101- high pressure constant-flux pump I, 102- high pressure constant-flux pump II, 103- high pressure advections
Pump III, 104- counterbalance valves I, 105- counterbalance valves II, 106- counterbalance valves III；
2- injected systems, 201- pressure breaks liquid container I, 202- pressure breaks liquid container II, 203- piston containers, 204- rabbling mechanisms,
205- gas cylinders, 206- controlled valves I, 207- controlled valves II, 208- tapping valve Is, 209- controlled valves III, 210- is opened
Closing valve IV, 211- tapping valve II, 212- controlled valves V, 213- controlled valves VI, 214- piston sheets baffle plate I, 215- are lived
Patch baffle plate II, 216- piston sheets I, 217- piston sheets II, the upper chamber of 218- piston containers, the middle part of 219- piston containers
Cavity, the lower cavity of 220- piston containers, 221- tanks, 222- constant pressure constant speed plunger displacement pump I, 223- constant pressure constant speed plunger displacement pumps
Ⅱ；
3- true triaxial test framves, 4- down-holes rock core, 5- computers.
Specific embodiment
In order to be further understood that the content of the invention of the present invention, the present invention is elaborated below in conjunction with specific embodiment.
Embodiment one：
As shown in figure 1, an embodiment of the true triaxial sand fracturing testing machine according to the present invention, which includes confined pressure system 1, injection
System 2 and true triaxial test frame 3, the confined pressure system 1 and the injected system 2 are connected with the true triaxial test frame 3, described
Down-hole rock core 4 is placed in true triaxial test frame 3；The injected system 2 and the confined pressure system 1 are connected with computer 5, the note
Entering system 2 includes pressure break liquid container I 201, pressure break liquid container II 202 and piston container 203, in the pressure break liquid container II 202
Rabbling mechanism 204 is installed, the rabbling mechanism 204 is connected with computer 5, piston sheet baffle plate I is set in the piston container 203
214 and piston sheet baffle plate II 215, the middle part of two piston sheet baffle plates is open.
The pressure break liquid container of the true triaxial sand fracturing testing machine of the present embodiment and inject container（That is piston container）Separate
Design, is so conveniently replaceable fracturing fluid.When needing to change fracturing fluid, only need to operate in pressure break liquid container, by pressure break
The tapping valve of liquid container lower end is opened, and discharges the fracturing fluid in container, is then injected at the opening of container upper end new
Fracturing fluid, it is also possible to first cleaning container, reinjects new fracturing fluid.And in prior art, pressure break liquid container and inject appearance
Device is by a device（Oil isolated from water device）Realize, when needing to change fracturing fluid, oil isolated from water device is taken apart, is poured out in container
Then piston sheet in container is pushed to container bottom manually or using instrument, then is noted in piston sheet upper chamber by water, oil
Enter new fracturing fluid, operating difficultiess, container are difficult to clean up, and change fracturing fluid every time and will dismantle oil isolated from water device,
After dismantling several times, the sealing for causing oil isolated from water device is deteriorated, part connection loosens, and also results in the essence of injection liquid
Degree reduces, pressure break state labile.
As shown in Figures 2 and 3, the upper end of the pressure break liquid container I 201 is connected with gas cylinder 205 by pipeline, pipeline
Upper installation controlled valve I 206；The lower end of the pressure break liquid container I 201 is connected with the middle part cavity 219 of piston container by pipeline
Connect, controlled valve II 207 is installed on pipeline.The bottom of the pressure break liquid container I 201 arranges tapping valve I 208.The pressure break
The upper end of liquid container II 202 is connected with gas cylinder 205 by pipeline, installs controlled valve III 209 on pipeline；The fracturing fluid
The lower end of container II 202 is connected with the upper chamber 218 of piston container by pipeline, installs controlled valve IV 210 on pipeline.Institute
The bottom for stating pressure break liquid container II 202 arranges tapping valve II 211.The upper chamber 218 of the piston container by pipeline with
The down-hole rock core 4 connects, and installs controlled valve V 212 on pipeline；The middle part cavity 219 of the piston container by pipeline with
The down-hole rock core 4 connects, and installs controlled valve VI 213 on pipeline；The lower cavity 220 of the piston container by pipeline with
Tank 221 connects.The tank 221 by pipeline respectively with constant pressure constant speed plunger displacement pump I 222 and constant pressure constant speed plunger displacement pump II 223
Connection.The constant pressure constant speed plunger displacement pump I 222 and the constant pressure constant speed plunger displacement pump II 223 are connected with computer 5.
As shown in figure 3, the piston sheet baffle plate I 214 and the piston sheet baffle plate II 215 are by 203 points of the piston container
For three cavitys.Piston sheet I 216 and piston sheet II 217 are set in the piston container 203, and two piston sheets can be moved up and down.
, in the top of the piston sheet baffle plate I 214, the piston sheet II 217 is in the piston sheet baffle plate II 215 for the piston sheet I 216
Top.
As shown in figure 4, the confined pressure system 1 includes high pressure constant-flux pump I 101, high pressure constant-flux pump II 102 and high pressure constant-flux pump
III 103, three pump housings are connected with computer 5.The high pressure constant-flux pump I 101 is by before and after pipeline and the down-hole rock core 4
Two face connections, install counterbalance valve I 104 on pipeline；The high pressure constant-flux pump II 102 is by pipeline and the down-hole rock core 4
The face connection of left and right two, installs counterbalance valve II 105 on pipeline；The high pressure constant-flux pump III 103 is by pipeline and the down-hole rock
The upper and lower surfaces connection of the heart 4, installs counterbalance valve III 106 on pipeline.When the confined pressure for producing exceedes setting value, counterbalance valve is automatic
Open, unload and be depressed into setting value.
According to an embodiment of the true triaxial sand fracturing test method of the present invention, add sand using the true triaxial of the present embodiment
Crushing test machine, which is comprised the following steps according to sequencing：
Step one：All of controlled valve and tapping valve is closed, fracturing fluid and proppant are injected into pressure break by a certain percentage
In liquid container II, mixing time is set, and is started rabbling mechanism and is stirred, formed and uniformly take sand fracturing fluid；First open
Closing valve III and controlled valve IV, then gas cylinder is opened, now take sand fracturing fluid and enter in the upper chamber of piston container；Treat
Take after sand fracturing fluid fully enters, first close gas cylinder, turn off controlled valve III and controlled valve IV；
Step 2：Preposition fracturing fluid is injected in pressure break liquid container I, first open controlled valve I and controlled valve II, then open height
Air bottle, now in the center lumen body of preposition fracturing fluid entrance piston container；After preposition fracturing fluid is fully entered, first close high
Air bottle, turns off controlled valve I and controlled valve II；
Step 3：Confined pressure value is set according to test requirements document, and passes through high pressure constant-flux pump I, high pressure constant-flux pump II and high pressure constant-flux pump
III three axial directions respectively to down-hole rock core apply confined pressure simultaneously；
Step 4：Controlled valve VI is opened, and starts constant pressure constant speed plunger displacement pump I and constant pressure constant speed plunger displacement pump II, if two plungers
Water in pump inner chamber is not full, then two plunger displacement pumps are filled water respectively from tank by pipeline, then carry out fracturing work；If
Water in two plunger displacement pump inner chambers is full, then directly carry out fracturing work；
Step 5：Displacement is set according to test requirements document, when displacement is less than or equal to 50ml/min, only constant pressure constant speed plunger
Lower cavity internal drainage of the pump I to piston container, now constant pressure constant speed plunger displacement pump II is standby, when constant pressure constant speed plunger
After water in pump I is all drained, constant pressure constant speed plunger displacement pump II starts the lower cavity internal drainage to piston container, now constant pressure and constant
Fast plunger displacement pump I absorbs water from tank；When displacement is more than 50ml/min, constant pressure constant speed plunger displacement pump I and constant pressure constant speed plunger displacement pump
II simultaneously to the lower cavity internal drainage of piston container；
Step 6：With constant pressure constant speed plunger displacement pump I and/or the drainage works of constant pressure constant speed plunger displacement pump II, preposition fracturing fluid injection
To in the rock core of down-hole, when the injection rate of preposition fracturing fluid reaches test requirements document, closing switch valve VI, while open switch valve
Door V, now takes sand fracturing fluid and is injected in the rock core of down-hole, and when the injection rate for taking sand fracturing fluid reaches test requirements document, closing is opened
Closing valve V, while opening controlled valve VI, now takes sand fracturing fluid for putting in fracturing fluid displacement pipeline, and is finally injected into
In the rock core of down-hole；
Step 7：With constant pressure constant speed plunger displacement pump I and/or the drainage works of constant pressure constant speed plunger displacement pump II, preposition fracturing fluid, sand is taken
Fracturing fluid and it is implanted sequentially in the rock core of down-hole for putting fracturing fluid, while observing the inlet pressure and time shown on computer
Variation relation curve, when inlet pressure drops to low spot, and when being in plateau, judges that fracturing process terminates, preserves computer
The data of record；
Step 8：Constant pressure constant speed plunger displacement pump I and constant pressure constant speed plunger displacement pump II is closed, and determines that inlet pressure is zero, while determining
The chamber pressure of two plunger displacement pumps is zero, if chamber pressure is not zero, needs to restart corresponding plunger displacement pump, the wink of startup
Between stop again by make chamber pressure vanishing；Open counterbalance valve I, counterbalance valve II and counterbalance valve III simultaneously, unload down-hole rock core
Confined pressure on three axial directions；
Step 9：Down-hole rock core is taken out from true triaxial test frame, crack spread scenarios are observed.
The piston volume of a container is 2000ml, and the volume of its upper chamber, middle part cavity and lower cavity is respectively
500ml, 1000ml and 500ml.Preposition fracturing fluid to the injection of down-hole rock core, take sand fracturing fluid and for putting the cumulative volume of fracturing fluid
For 500ml, wherein preposition fracturing fluid, sand fracturing fluid is taken and for put that fracturing fluid is respectively cumulative volume 40%, 50% and 10%, that is, note
The preposition fracturing fluid for entering is 200ml, take sand fracturing fluid for 250ml, for putting fracturing fluid for 50ml.Described for putting fracturing fluid using front
Fracturing fluid is put, it is will to take the displacement of sand fracturing fluid into rock core in pipeline which acts on.
Proppant is not contained in preposition fracturing fluid, for pressing off the bottom of down-hole rock core, is extended and is expanded crack, be that crack is accurate
Standby abundant back-up sand space, waits the arrival of proppant；When sand fracturing fluid is taken in preparation, can be according to reservoir characteristic and technological requirement
From different fracturing fluid systems, for further expanding crack；Preposition fracturing fluid is for fracturing fluid is put, simply the work of the two
With difference, for fracturing fluid being put for conveying and laid proppant in seam, form the flow conductivity and geometry with design requirement
The proppant filling crack of shape, the sand fracturing fluid of taking in pit shaft is all replaced into Reservoirs, in order to avoid shaft bottom sand setting or sand
Card downhole tool.
In the true triaxial sand fracturing test of the present embodiment, the upper chamber of piston container takes sand pressure break for injection
Liquid, its volume are 500ml；The middle part cavity of piston container is used for injecting preposition fracturing fluid, and its volume is 1000ml；Piston container
Lower cavity be used for inject water, its volume be 500ml.The sand fracturing fluid of taking of injection must all be 500ml every time, will piston
The upper chamber of container is filled up, and the volume of the preposition fracturing fluid of injection is at least preposition fracturing fluid, takes sand fracturing fluid and replace and put pressure
Split the total amount of liquid.
In step 2, mixing time is at least 20min.In step 3, three axle confined pressures are applied to down-hole rock core, X-direction is
Horizontal maximum principal stress, Y-direction are horizontal minimum principal stress, and Z-direction is vertical stress, and wherein the confined pressure of X-direction is more than Y-direction
Confined pressure.In step 5, displacement set point is 0-100ml/min.
The true triaxial hydraulic fracturing testing machine of the present embodiment, its confined pressure system are made up of three single pressure systems, per
Can pressurize simultaneously between individual system also can stepped pressure, isobaric can there is differential pressure again in three face confined pressures.Each individually encloses
Pressure system is made up of silicone oil container, constant-flux pump, counterbalance valve and pipeline etc..Confined pressure medium adopts silicone oil, as silicone oil has brilliance
Thermostability, electrical insulating property, weatherability, hydrophobicity, physiological inertia and less surface tension, additionally there is relatively low viscous temperature
Coefficient and higher resistance to compression, thus silicone oil as pressure medium have efficiency high, have a safety feature, noiseless the features such as.
Using double plunger reciprocating pump, imbibition plunger based on, another is kicker ram to high pressure pump, by the height of computer controls
Effect precision transfusion pumping system, it can be ensured that all there is under various use conditions higher transfusion precision and preferable repeatability to refer to
Mark.Injected system is made up of piston container, injected media container, fracturing fluid stirring container and the system of injecting.Piston container is not by
Rust Steel material is made, and its load rated safety pressure is 100MPa, volume is 2000ml；Piston container is separated into three by two piston sheets
In individual cavity, upper chamber and center lumen body, injection fracturing fluid, injects liquid in lower cavity.Injected media container is by rustless steel
Material is made, and its load rated safety pressure is 2MPa, volume is 2L.The container is with the preparing solution tank that scale is 1000ml, root
Different fracturing fluids are allocated in blend tank according to requirement of experiment, open the valve injection container below blend tank after the completion of allotment
In, it is then shut off preparing solution tank valve.Gas cylinder or air pressure pump is opened, injected media is pressed into piston using air pressure
In container.Fracturing fluid stirring container is made up of stainless steel material, and its load rated safety pressure is 2MPa, volume is 2L, inside sets motor
Rabbling mechanism, scalable rotating speed.There are proppant inlet and liquid injection port in fracturing fluid stirring container, according to test ratio note
Enter clear water and proppant, by computer controls rabbling mechanism, adjust to the rotating speed and mixing time for needing, utilize after stirring
Air pressure injects fracturing fluid in piston container.Assist system is made up of twin-tub constant pressure constant speed plunger pump and boosting liquid container.
The pressure of twin-tub constant pressure constant speed plunger displacement pump is 100MPa, flow velocity is 0-100ml/min, precision is 0.01ml/min.The plunger displacement pump
The characteristics of be start, stop, flow etc. is realized automatically controlling by computer program.The system design is compact, convenient and complete
Totally-enclosed, and Programmable Logic Controller and intelligent display screen are coordinated to the forward and back of plunger displacement pump, speed governing, tune using inlet servo motor
Pressure etc. carries out precise control, and the running status and failure for indicating plunger displacement pump using flash demo, curve show flow rate of liquid, flow
And the real-time change of pressure, with simple, convenient man-machine interface.Twin-tub constant pressure constant speed plunger displacement pump both can be single
Cylinder works independently, it is also possible to which twin-tub linkage is worked without interruption.Single cylinder, twin-tub work, have constant pressure, constant current, three kinds of works of tracking
Operation mode, meets the demand of different operating and test.In terms of security system, the testing machine of the present invention is high tension unit, is true
Experimental safe being protected, all relief valve being configured with the entrance of confined pressure system and injected system, safe threshold sensitivity height, the operation are just
Prompt, safe and reliable, when confined pressure or injection pressure exceed secure setting, relief valve can automatically open up release pressure, while
On computer arrange pressure upper limit value, when pressure exceed setting value when, computer sends order pump trip, with ensure pipeline and
The safety of operator.In terms of computer acquisition and control system, data collecting system can gather pressure, temperature, flow, perseverance
The instant numerical value such as pressure of fast constant pressure plunger displacement pump.For ensureing the reliability of certainty of measurement and control, using C168H digital collection controls
Fabrication, so that realize that digital collection is transmitted.Software is run under Windows7/XP environment, with gas parameter conversion, data
Analytic function.Test operation flow process shows on interface, can achieve human computer conversation, after operator set parameter, testing machine
Can operating alone, computer can the numerical value such as all pressure of automatic data collection, flow velocity.The data of computer acquisition after treatment may be used
Initial data form, analytical statement and curve chart is generated, while database file is generated so as to backup inquiry.
Embodiment two：
According to another embodiment of the true triaxial sand fracturing test method of the present invention, the true triaxial sand fracturing test for being used
Machine is identical with embodiment one, and test procedure is identical with embodiment one, and test parameterss are different.In the present embodiment, to down-hole rock
The preposition fracturing fluid of heart injection, take sand fracturing fluid and be 800ml for the cumulative volume of fracturing fluid is put, wherein preposition fracturing fluid, take sand
Fracturing fluid and for put fracturing fluid be respectively cumulative volume 40%, 50% and 10%, that is, the preposition fracturing fluid for injecting be 320ml, take sand pressure
It is 80ml to split liquid for 400ml, for fracturing fluid is put.
Embodiment three：
According to another embodiment of the true triaxial sand fracturing test method of the present invention, the true triaxial sand fracturing test for being used
Machine is identical with embodiment one, and test procedure is identical with embodiment one, and test parameterss are different.In the present embodiment, to down-hole rock
The preposition fracturing fluid of heart injection, take sand fracturing fluid and be 600ml for the cumulative volume of fracturing fluid is put, wherein preposition fracturing fluid, take sand
Fracturing fluid and for put fracturing fluid be respectively cumulative volume 40%, 50% and 10%, that is, the preposition fracturing fluid for injecting be 240ml, take sand pressure
It is 60ml to split liquid for 300ml, for fracturing fluid is put.
It will be apparent to those skilled in the art that the true triaxial sand fracturing testing machine of the present invention and its test method include
State the combination in any of the content of the invention and specific embodiment part and each several part shown by accompanying drawing of description of the invention, limit
In length and for make description concisely without by these combination constitute each scheme describe one by one.All the present invention spirit and
Within principle, any modification, equivalent substitution and improvements that is done etc. should be included within the scope of the present invention.
Claims (10)
1. a kind of true triaxial sand fracturing testing machine, including confined pressure system, injected system and true triaxial test frame, the confined pressure system
System and the injected system are connected with the true triaxial test frame, place down-hole rock core, its feature in the true triaxial test frame
It is：The injected system and the confined pressure system are connected with computer, and the injected system includes pressure break liquid container I, pressure break
Liquid container II and piston container, install rabbling mechanism in the pressure break liquid container II, the rabbling mechanism is connected with computer, institute
State in piston container and piston sheet baffle plate I and piston sheet baffle plate II are set, the middle part of two piston sheet baffle plates is open.
2. true triaxial sand fracturing testing machine as claimed in claim 1, it is characterised in that：The upper end of the pressure break liquid container I
It is connected with gas cylinder by pipeline, controlled valve I is installed on pipeline；The lower end of the pressure break liquid container I is by pipeline and work
The middle part cavity connection of plug container, installs controlled valve II on pipeline.
3. true triaxial sand fracturing testing machine as claimed in claim 2, it is characterised in that：The bottom of the pressure break liquid container I
Tapping valve I is set.
4. true triaxial sand fracturing testing machine as claimed in claim 1, it is characterised in that：The upper end of the pressure break liquid container II
It is connected with gas cylinder by pipeline, controlled valve III is installed on pipeline；The lower end of the pressure break liquid container II by pipeline with
The upper chamber connection of piston container, installs controlled valve IV on pipeline.
5. true triaxial sand fracturing testing machine as claimed in claim 4, it is characterised in that：The bottom of the pressure break liquid container II
Tapping valve II is set.
6. true triaxial sand fracturing testing machine as claimed in claim 1, it is characterised in that：The piston sheet baffle plate I and described
The piston container is divided into three cavitys by piston sheet baffle plate II.
7. true triaxial sand fracturing testing machine as claimed in claim 6, it is characterised in that：Piston is set in the piston container
Piece I and piston sheet II, two piston sheets can be moved up and down.
8. true triaxial sand fracturing testing machine as claimed in claim 7, it is characterised in that：The piston sheet I is in the piston
The top of piece baffle plate I, the piston sheet II is in the top of the piston sheet baffle plate II.
9. true triaxial sand fracturing testing machine as claimed in claim 6, it is characterised in that：The upper chamber of the piston container
It is connected with the down-hole rock core by pipeline, controlled valve V is installed on pipeline；The middle part cavity of the piston container is by pipe
Line is connected with the down-hole rock core, installs controlled valve VI on pipeline；The lower cavity of the piston container is by pipeline and water
Groove connects.
10. a kind of true triaxial sand fracturing test method, usage right require the true triaxial sand fracturing any one of 1-9
Testing machine, its are comprised the following steps according to sequencing：
Step one：All of controlled valve and tapping valve is closed, fracturing fluid and proppant are injected into pressure break by a certain percentage
In liquid container II, mixing time is set, and is started rabbling mechanism and is stirred, formed and uniformly take sand fracturing fluid；First open
Closing valve III and controlled valve IV, then gas cylinder is opened, now take sand fracturing fluid and enter in the upper chamber of piston container；Treat
Take after sand fracturing fluid fully enters, first close gas cylinder, turn off controlled valve III and controlled valve IV；
Step 2：Preposition fracturing fluid is injected in pressure break liquid container I, first open controlled valve I and controlled valve II, then open height
Air bottle, now in the center lumen body of preposition fracturing fluid entrance piston container；After preposition fracturing fluid is fully entered, first close high
Air bottle, turns off controlled valve I and controlled valve II；
Step 3：Confined pressure value is set according to test requirements document, and passes through high pressure constant-flux pump I, high pressure constant-flux pump II and high pressure constant-flux pump
III three axial directions respectively to down-hole rock core apply confined pressure simultaneously；
Step 4：Controlled valve VI is opened, and starts constant pressure constant speed plunger displacement pump I and constant pressure constant speed plunger displacement pump II, if two plungers
Water in pump inner chamber is not full, then two plunger displacement pumps are filled water respectively from tank by pipeline, then carry out fracturing work；If
Water in two plunger displacement pump inner chambers is full, then directly carry out fracturing work；
Step 5：Displacement is set according to test requirements document, when displacement is less than or equal to 50ml/min, only constant pressure constant speed plunger
Lower cavity internal drainage of the pump I to piston container, now constant pressure constant speed plunger displacement pump II is standby, when constant pressure constant speed plunger
After water in pump I is all drained, constant pressure constant speed plunger displacement pump II starts the lower cavity internal drainage to piston container, now constant pressure and constant
Fast plunger displacement pump I absorbs water from tank；When displacement is more than 50ml/min, constant pressure constant speed plunger displacement pump I and constant pressure constant speed plunger displacement pump
II simultaneously to the lower cavity internal drainage of piston container；
Step 6：With constant pressure constant speed plunger displacement pump I and/or the drainage works of constant pressure constant speed plunger displacement pump II, preposition fracturing fluid injection
To in the rock core of down-hole, when the injection rate of preposition fracturing fluid reaches test requirements document, closing switch valve VI, while open switch valve
Door V, now takes sand fracturing fluid and is injected in the rock core of down-hole, and when the injection rate for taking sand fracturing fluid reaches test requirements document, closing is opened
Closing valve V, while opening controlled valve VI, now takes sand fracturing fluid for putting in fracturing fluid displacement pipeline, and is finally injected into
In the rock core of down-hole；
Step 7：With constant pressure constant speed plunger displacement pump I and/or the drainage works of constant pressure constant speed plunger displacement pump II, preposition fracturing fluid, sand is taken
Fracturing fluid and it is implanted sequentially in the rock core of down-hole for putting fracturing fluid, while observing the inlet pressure and time shown on computer
Variation relation curve, when inlet pressure drops to low spot, and when being in plateau, judges that fracturing process terminates, preserves computer
The data of record；
Step 8：Constant pressure constant speed plunger displacement pump I and constant pressure constant speed plunger displacement pump II is closed, and determines that inlet pressure is zero, while determining
The chamber pressure of two plunger displacement pumps is zero, if chamber pressure is not zero, needs to restart corresponding plunger displacement pump, the wink of startup
Between stop again by make chamber pressure vanishing；Open counterbalance valve I, counterbalance valve II and counterbalance valve III simultaneously, unload down-hole rock core
Confined pressure on three axial directions；
Step 9：Down-hole rock core is taken out from true triaxial test frame, crack spread scenarios are observed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611073418.0A CN106501488B (en) | 2016-11-29 | 2016-11-29 | True triaxial sand fracturing testing machine and its test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611073418.0A CN106501488B (en) | 2016-11-29 | 2016-11-29 | True triaxial sand fracturing testing machine and its test method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106501488A true CN106501488A (en) | 2017-03-15 |
| CN106501488B CN106501488B (en) | 2019-09-03 |
Family
ID=58327650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611073418.0A Active CN106501488B (en) | 2016-11-29 | 2016-11-29 | True triaxial sand fracturing testing machine and its test method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106501488B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107976529A (en) * | 2017-12-28 | 2018-05-01 | 中国华能集团公司 | A kind of multifunctional reaction still experimental system and experimental method |
| CN108645999A (en) * | 2018-05-29 | 2018-10-12 | 中国石油大学(北京) | The real-time dynamics evaluation apparatus and method of full-hole core acid corrosion fracture |
| CN108682270A (en) * | 2018-05-03 | 2018-10-19 | 中国石油大学(北京) | A kind of the true triaxial fracture simulation device and its working method of the laying of simulation proppant |
| CN110243672A (en) * | 2019-07-18 | 2019-09-17 | 中国华能集团有限公司 | A kind of CO2Positive battery metering system and application method |
| CN110987763A (en) * | 2019-12-23 | 2020-04-10 | 中国石油集团川庆钻探工程有限公司 | Simulation experiment device and method for injecting proppant into fracture |
| CN111189687A (en) * | 2020-03-09 | 2020-05-22 | 山东科技大学 | Test method for simulating sliding instability of fractured rock mass under action of injected fluid |
| CN111238922A (en) * | 2020-03-09 | 2020-06-05 | 山东科技大学 | Test method for accurately measuring wetting range by using wave velocity attenuation |
| CN112081784A (en) * | 2020-09-30 | 2020-12-15 | 高阳 | Piston-free hydraulic grouting pump unit |
| CN115032368A (en) * | 2022-06-07 | 2022-09-09 | 西南石油大学 | Fracturing fracture self-supporting flow conductivity overall-process evaluation method |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101519961A (en) * | 2009-04-01 | 2009-09-02 | 西南石油大学 | Device and method for measuring embedding depth of proppant |
| US20120255734A1 (en) * | 2011-04-07 | 2012-10-11 | Todd Coli | Mobile, modular, electrically powered system for use in fracturing underground formations |
| US8851186B2 (en) * | 2006-06-02 | 2014-10-07 | Schlumberger Technology Corporation | Split stream oilfield pumping systems |
| CN104153754A (en) * | 2014-07-07 | 2014-11-19 | 西南石油大学 | Dynamic laying device for testing flow conductivity of propping agent under simulated formation condition |
| CN104502059A (en) * | 2014-12-02 | 2015-04-08 | 中国石油大学(华东) | Foam stability test device under pressure fluctuation and working method thereof |
| CN104594885A (en) * | 2014-10-16 | 2015-05-06 | 北京科技大学 | Measuring test device and method for seepage law of shale gas in microfractures |
| CN105043933A (en) * | 2015-07-27 | 2015-11-11 | 西安交通大学 | High-parameter fracturing fluid performance testing and evaluation device |
| CN105134186A (en) * | 2015-08-18 | 2015-12-09 | 中国地质大学（武汉） | Shale gas hydraulic fracturing physical simulation test system |
| CN105484722A (en) * | 2015-11-25 | 2016-04-13 | 中国石油大学(华东) | Device and work method for simulating channel fracture pump injecting mode and measuring channel rate |
-
2016
- 2016-11-29 CN CN201611073418.0A patent/CN106501488B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8851186B2 (en) * | 2006-06-02 | 2014-10-07 | Schlumberger Technology Corporation | Split stream oilfield pumping systems |
| CN101519961A (en) * | 2009-04-01 | 2009-09-02 | 西南石油大学 | Device and method for measuring embedding depth of proppant |
| US20120255734A1 (en) * | 2011-04-07 | 2012-10-11 | Todd Coli | Mobile, modular, electrically powered system for use in fracturing underground formations |
| CN104153754A (en) * | 2014-07-07 | 2014-11-19 | 西南石油大学 | Dynamic laying device for testing flow conductivity of propping agent under simulated formation condition |
| CN104594885A (en) * | 2014-10-16 | 2015-05-06 | 北京科技大学 | Measuring test device and method for seepage law of shale gas in microfractures |
| CN104502059A (en) * | 2014-12-02 | 2015-04-08 | 中国石油大学(华东) | Foam stability test device under pressure fluctuation and working method thereof |
| CN105043933A (en) * | 2015-07-27 | 2015-11-11 | 西安交通大学 | High-parameter fracturing fluid performance testing and evaluation device |
| CN105134186A (en) * | 2015-08-18 | 2015-12-09 | 中国地质大学（武汉） | Shale gas hydraulic fracturing physical simulation test system |
| CN105484722A (en) * | 2015-11-25 | 2016-04-13 | 中国石油大学(华东) | Device and work method for simulating channel fracture pump injecting mode and measuring channel rate |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107976529B (en) * | 2017-12-28 | 2023-09-29 | 中国华能集团公司 | Multifunctional reaction kettle experiment system and experiment method |
| CN107976529A (en) * | 2017-12-28 | 2018-05-01 | 中国华能集团公司 | A kind of multifunctional reaction still experimental system and experimental method |
| CN108682270A (en) * | 2018-05-03 | 2018-10-19 | 中国石油大学(北京) | A kind of the true triaxial fracture simulation device and its working method of the laying of simulation proppant |
| CN108645999B (en) * | 2018-05-29 | 2023-08-22 | 中国石油大学(北京) | Real-time dynamic evaluation device and method for full-diameter rock core acid etching crack flow conductivity |
| CN108645999A (en) * | 2018-05-29 | 2018-10-12 | 中国石油大学(北京) | The real-time dynamics evaluation apparatus and method of full-hole core acid corrosion fracture |
| CN110243672A (en) * | 2019-07-18 | 2019-09-17 | 中国华能集团有限公司 | A kind of CO2Positive battery metering system and application method |
| CN110987763A (en) * | 2019-12-23 | 2020-04-10 | 中国石油集团川庆钻探工程有限公司 | Simulation experiment device and method for injecting proppant into fracture |
| CN111238922A (en) * | 2020-03-09 | 2020-06-05 | 山东科技大学 | Test method for accurately measuring wetting range by using wave velocity attenuation |
| CN111189687B (en) * | 2020-03-09 | 2021-05-14 | 山东科技大学 | Test method for simulating sliding instability of fractured rock mass under action of injected fluid |
| CN111189687A (en) * | 2020-03-09 | 2020-05-22 | 山东科技大学 | Test method for simulating sliding instability of fractured rock mass under action of injected fluid |
| CN112081784A (en) * | 2020-09-30 | 2020-12-15 | 高阳 | Piston-free hydraulic grouting pump unit |
| CN115032368A (en) * | 2022-06-07 | 2022-09-09 | 西南石油大学 | Fracturing fracture self-supporting flow conductivity overall-process evaluation method |
| CN115032368B (en) * | 2022-06-07 | 2023-08-04 | 西南石油大学 | Fracturing fracture self-supporting diversion capacity overall process evaluation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106501488B (en) | 2019-09-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106501488A (en) | True triaxial sand fracturing testing machine and its test method | |
| CN106644734A (en) | True tri-axial hydraulic fracture test machine and test method | |
| CN106593384B (en) | Hydraulic fracturing physical simulating method with spiral perforated horizontal wells | |
| CN106640061B (en) | A kind of pit shaft and formation fracture Coupled Flow imitative experimental appliance and method | |
| CN106593383B (en) | The hydraulic fracturing physical simulating method of underground rock core | |
| CN110470585A (en) | A kind of experiment test device and method of shale dynamic imbibition ability | |
| CN109374495A (en) | A kind of shale forces the experiment test device and method of imbibition ability | |
| CN108661626B (en) | High-temperature high-pressure well wall water invasion simulation experiment device | |
| CN208137906U (en) | Actual triaxial testing apparatus is used in a kind of temporarily stifled steering behaviour evaluation | |
| CN103306661A (en) | Method for controlling fracturing of multiple fractures of oil and gas field with natural micro-fracture-developed reservoir stratum | |
| CN109707353A (en) | Downhole hydraulic pulse S3Acidolysis plugging and injection increasing experimental device and method | |
| CN206256908U (en) | A kind of pit shaft and formation fracture Coupled Flow analogue experiment installation | |
| CN104833583A (en) | Diverting agent effect evaluation true triaxial test machine | |
| CN208885268U (en) | Borehole wall water enchroachment (invasion) imitative experimental appliance under a kind of high temperature and pressure | |
| CN111980646A (en) | Imbibition oil displacement effect evaluation device and use method | |
| CN111075390A (en) | Visual experimental device and experimental method based on adherent drilling well sealing effect evaluation | |
| CN208153000U (en) | A kind of fracture-pore reservoir water injection well is acidified simulator online | |
| CN204419149U (en) | A kind of proppant and acid etching flow conductivity evaluating apparatus | |
| CN106089165A (en) | Foam pressure cone blocking water Visual evaluation device and application under the conditions of a kind of simulation oil reservoir | |
| CN108538174A (en) | A kind of large scale experimental model preparation facilities and method based on rock-soil material | |
| CN204594804U (en) | Diversion agent effect assessment true triaxial test machine | |
| CN108798616A (en) | Water filling device and oil field layered Intelligent water injection analogue experiment installation and its application method | |
| CN109707354A (en) | Underground hydraulic pulsation nanometer pressure reduction and injection increase experimental device and method | |
| CN112360420B (en) | System and method for realizing balanced expansion of horizontal well subsection multi-cluster fracturing multi-crack | |
| CN104929595B (en) | Fluctuation pressure drives self-balancing piston pump pumping equipment and its process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |