CN107976392A - Multifunctional network fracture condudtiviy tests system and its detection method and application - Google Patents
Multifunctional network fracture condudtiviy tests system and its detection method and application Download PDFInfo
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Abstract
The invention discloses a kind of multifunctional network fracture condudtiviy test system and its detection method and application, including multifunctional network fracture guide instrument and data collecting system, data collecting system is connected to flow measurement instrument, the first pressure difference instrument, the first displacement instrument, second displacement instrument and the second pressure difference instrument；Multifunctional network fracture guide instrument includes base and diversion chamber, and metering orifice and pressure difference hole are respectively arranged with water conservancy diversion chamber outer wall, and metering orifice is connected by flow pipeline with flow measurement instrument, and pressure difference hole is connected by the second pressure difference pipeline with the second pressure difference instrument；First pressure difference instrument is connected with intermediate receptacle device by pressure difference pipeline, and the pressure difference pipeline other end, which is divided into, is connected with pressure difference branch pipe A and pressure difference branch pipe B, and pressure difference branch pipe A is connected with constant-flux pump and flow container in turn, and pressure difference branch pipe B is connected with gas cylinder；Branch pipe is connected with the second pressure difference pipeline between pressure difference hole and the second pressure difference instrument.Function of the present invention is more powerful, has a wide range of application, and has important practical value.
Description
Technical field
The present invention relates to shale gas development field, in particular to a kind of multifunctional network fracture condudtiviy test system and
Its detection method and application.
Background technology
With the success of China's shale gas reservoir business development, the large-scale development of untraditional reservoir is deepening continuously, water
Power fracturing technique is to transform the required technological means of such oil-gas reservoir.Due to conventional oil gas reservoir pressure break different from the past, in page
What is formed in rock gas reservoir is fracture network, but the method that the experiment of test fracture condudtiviy still follows conventional lines at present, it is difficult to
Accurately reflect the flow in fracture ability in shale gas reservoir.In shale gas reservoir, it may appear that the non-darcy gas of biphase gas and liquid flow, high speed
Flowing etc. a variety of phenomenons, the experiment of typical crack flow conductivity, more using distilled water be used as displacing medium, therefore experimental result and
The truth of shale gas reservoir can differ larger.
The content of the invention
The present invention surveys guide instrument for existing conventional liquid, it is impossible to simulates gas or biphase gas and liquid flow flows in fracture network
The defects of ability；Provide a kind of multifunctional network fracture condudtiviy test system and its detection method and application, the system
Fluid ability with fracture network in accurate simulation shale gas reservoir, also with other multiple functions, such as tests the broken of proppant
Broken rate, carried out the test of the single fluid such as liquid or gas, subsurface reservoir and test fracture width etc. simulated using shale rock beam,
These functions expand the purposes of the invention, and practical value is larger.
To achieve these goals, a kind of multifunctional network fracture condudtiviy test system provided by the invention, including
Multifunctional network fracture guide instrument and data collecting system, the data collecting system are connected to flow measurement instrument, first
Pressure difference instrument, the first displacement instrument, second displacement instrument and the second pressure difference instrument；The multifunctional network fracture guide instrument passes through flowtube
Line, the first displacement pipeline, second displacement pipeline and the second pressure difference pipeline respectively with flow measurement instrument, the first displacement instrument, second
Instrument and the connection of the second pressure difference instrument are moved, the first pressure difference instrument is connected with intermediate receptacle device, the middle appearance by pressure difference pipeline
The device device other end, which is divided into, is connected with pressure difference branch pipe and pressure difference branch pipe, and the pressure difference branch pipe is connected with constant-flux pump and flow container in turn,
The pressure difference branch pipe is connected with gas cylinder；The second pressure difference between the multifunctional network fracture guide instrument and the second pressure difference instrument
Branch pipe is connected with pipeline, the branch pipe is connected to pumped vacuum systems and back pressure device, and the back pressure device is connected with balance.
Further, the multifunctional network fracture guide instrument includes base, and discoid lead is provided with the base
Flow chamber chassis, diversion chamber chassis upper face center are provided with diversion chamber's central inlet, are covered on the side face of the diversion chamber chassis
There is circular strainer, diversion chamber chassis upper surface is provided with diversion chamber's plunger of hollow cylindrical shape, and diversion chamber's column
Plug is inserted on diversion chamber's central inlet and fixes, and is cased with diversion chamber's shell outside diversion chamber's plunger, the diversion chamber chassis is with leading
Flow chamber shell is connected through a screw thread.
Yet further, the cylinder that the water conservancy diversion chamber enclosure is gradually reduced by multiple diameters is stacked and formed, the flow
Hole and pressure difference hole are opened on diversion chamber's bottommost cylindrical body outer wall, also right on the water conservancy diversion chamber enclosure topmost cylindrical body outer wall
Title offers recess hole, for being rotatablely installed water conservancy diversion chamber enclosure.
Yet further, the metering orifice is connected by flow pipeline with flow measurement instrument, and the pressure difference hole passes through second
Pressure difference pipeline is connected with the second pressure difference instrument；Connected between the metering orifice (1.51) and pressure difference hole (1.52) by afflux pipeline,
The afflux pipeline both ends are connected with flow pipeline (3.1) and the second pressure difference pipeline (7.1) respectively；Two symmetrical grooves holes pass through
First displacement pipeline and second displacement pipeline are connected with the first displacement instrument, second displacement instrument respectively.
Yet further, the side wall centers of the base are provided with gas-liquid import, the gas-liquid import (1.11) and flow
Pressure difference pipeline (4.1) connects between gauge (3) and intermediate receptacle device (8), the side wall of the base of the gas-liquid import both sides
On be symmetrically arranged with bottoming hole, the bottoming hole is connected with heating rod, and hydraulic loading device is provided with below the base.
Yet further, the pressure difference pipeline second intermediate receptacle device also in parallel, the intermediate receptacle device and the
Two intermediate receptacle device sides are respectively connected with valve.
Yet further, it is provided with liquid flowing valve on the pressure difference branch pipe between the pressure difference pipeline and constant-flux pump.
Yet further, it is provided with air intake valve on the pressure difference branch pipe between the pressure difference pipeline and gas cylinder.
Present invention also offers a kind of side of above-mentioned multifunctional network fracture condudtiviy test system detectio fluid media (medium)
Method, comprises the following steps：
1) multifunctional network fracture guide instrument is placed on hydraulic loading device, closes air intake valve, open liquid feed valve
Door, fluid media (medium) enter diversion chamber's central inlet by fluid flowmeter and pressure difference instrument, are expanded around by diversion chamber's center chassis
Dissipate, into metering orifice and pressure difference hole, test outlet pressure；
2) testing standard pressure progressively at the same time, is pressurized on multifunctional network fracture guide instrument by hydraulic loading device
Value, and utilize the thickness change of the first displacement instrument and second displacement instrument test proppant；Above-mentioned data pass through data collecting system
It is automatically transferred in computer, according to recorded data, flow conductivity at different moments can be calculated.
Present invention also offers a kind of above-mentioned multifunctional network fracture condudtiviy test system to be used for radial direction flow conductivity
Test, proppant breaking capacity and strength test, the test of fracture width and embedding depth of proppant and long-term flow conductivity are surveyed
Application in examination.
The beneficial effects of the present invention are：
The fluid ability of fracture network in present invention simulation shale gas reservoir, using the shale rock beam or designed of processing
Fracture network model of analogous outcrop, studies the proppant flow conductivity under different fracture network combinations.For different clossing pressures, different supports
Agent type and concentration combination etc.,
It can carry out targetedly experimental simulation research.Meanwhile liquid or gas can be used to carry out single fluid test,
Flow conductivity of gas-liquid two-phase current test fracture network etc. can also be used.
The system of the present invention can more precisely simulate fluid in shale gas reservoir to center using cylindrical diversion chamber
The mobility status of a well, it is entirely different with the situation of conventional strip diversion chamber reflection linear flow.Since linear flow has more
The early stage of present fracturing fracture, the duration is also shorter, and therefore, the result that conventional diversion chamber is tested is bigger than normal, it is impossible to anti-
Reflect the later stage condition of production of fracturing fracture.It can just reflect formation fluid in reservoir and crack using cylindrical diversion chamber
Radial flow situation, is more conform with produce reality, therefore,
As a result it is more representative.
The system of the present invention greatly improves its application range, avoids the single situation of conventional apparatus function.Except test
The flow conductivity of fracture network, the invention device can also be used for testing the percentage of damage of proppant, be used to support agent evaluation；Simulation ground
Layer fluid radial inflow pit shaft；
Test the fracture width under different clossing pressures；Simulated formation temperature, tests different fracturing fluid types to proppant
Injury of flow conductivity etc..
In conclusion the present invention can test flow conductivity of the multiple fluid type in fracture network, at the same time, moreover it is possible to use
To test the percentage of damage of proppant, agent evaluation is used to support；Simulated formation fluid radial inflow pit shaft；Test different clossing pressures
Under fracture width；Evaluate the injury of fracturing fluid to proppant flow conductivity etc..Therefore, function of the present invention is more powerful,
Have a wide range of application, there is important practical value.
Brief description of the drawings
Fig. 1 is the structure diagram that multifunctional network fracture condudtiviy tests system；
Fig. 2 is the exploded view of multifunctional network fracture guide instrument；
In figure, multifunctional network fracture guide instrument 1, base 1.1, gas-liquid import 1.11, bottoming hole 1.12, diversion chamber chassis
1.2nd, diversion chamber's central inlet 1.21, circular strainer 1.3, diversion chamber's plunger 1.4, water conservancy diversion chamber enclosure 1.5, metering orifice 1.51,
Pressure difference hole 1.52, recess hole 1.53, data collecting system 2, flow measurement instrument 3, flow pipeline 3.1, the first pressure difference instrument 4, pressure difference
Pipeline 4.1, pressure difference branch pipe A4.11, pressure difference branch pipe B4.12, the first displacement instrument 5, the first displacement pipeline 5.1, second displacement instrument 6,
Second displacement pipeline 6.1, the second pressure difference instrument 7, the second pressure difference pipeline 7.1, intermediate receptacle device 8, the second intermediate receptacle device
8.1st, constant-flux pump 9, flow container 10, gas cylinder 11, branch pipe 12, pumped vacuum systems 13, back pressure device 14, balance 15, hydraulic loaded dress
Put 16, heating rod 17, valve 18, liquid flowing valve 19, air intake valve 20, afflux pipeline 21.
Embodiment
In order to preferably explain the present invention, below in conjunction with the specific embodiment main contents that the present invention is furture elucidated, but
Present disclosure is not limited solely to following embodiments.
The multifunctional network fracture condudtiviy as shown in Fig. 1~2 tests system, including multifunctional network fracture guide instrument 1
With data collecting system 2, data collecting system 2 is connected to flow measurement instrument 3, the first pressure difference instrument 4, the first displacement instrument 5,
Two displacement instrument 6 and the second pressure difference instrument 7；
Multifunctional network fracture guide instrument 1 includes base 1.1, and discoid diversion chamber chassis is provided with base 1.1
1.2,1.2 upper face center of diversion chamber chassis is provided with diversion chamber's central inlet 1.21, is cased with justifying on 1.2 side face of diversion chamber chassis
Ring-type strainer 1.3,1.2 upper surface of diversion chamber chassis are provided with diversion chamber's plunger 1.4 of hollow cylindrical shape, and diversion chamber's column
Plug 1.4 is inserted on diversion chamber's central inlet 1.21 and fixes, and diversion chamber's shell 1.5, diversion chamber chassis are cased with outside diversion chamber's plunger 1.4
1.2 are connected through a screw thread with water conservancy diversion chamber enclosure 1.5.
The cylinder that water conservancy diversion chamber enclosure 1.5 is gradually reduced by multiple diameters is stacked and formed, metering orifice 1.51 and pressure difference hole
1.52 are opened on 1.5 bottommost cylindrical body outer wall of diversion chamber, are also symmetrically opened on 1.5 topmost cylindrical body outer wall of water conservancy diversion chamber enclosure
Equipped with recess hole 1.53,
Metering orifice 1.51 is connected by flow pipeline 3.1 with flow measurement instrument 3, and pressure difference hole 1.52 passes through the second pressure difference pipeline
7.1 are connected with the second pressure difference instrument 7；Connected between metering orifice 1.51 and pressure difference hole 1.52 by afflux pipeline 21, afflux pipeline 21
Both ends are connected with 3.1 and second pressure difference pipeline 7.1 of flow pipeline respectively；Two symmetrical grooves holes 1.53 pass through the first displacement pipeline
5.1 and second displacement pipeline 6.1 be connected respectively with the first displacement instrument 5, second displacement instrument 6；
Branch pipe 12 is connected with the second pressure difference pipeline 7.1 between 1.52 and second pressure difference instrument 7 of pressure difference hole,
The side wall centers of base 1.1 are provided with gas-liquid import 1.11, gas-liquid import 1.11 and flow measurement instrument 3 and middle appearance
Pressure difference pipeline 4.1 connects between device device 8, and bottoming hole is symmetrically arranged with the side wall of the base 1.1 of 1.11 both sides of gas-liquid import
1.12 and bottoming hole 1.13, bottoming hole 1.12 be connected with heating rod 17, the lower section of base 1.1 is provided with hydraulic loading device 16.
First pressure difference instrument 4 is connected with intermediate receptacle device 8 by pressure difference pipeline 4.1, and 8 other end of intermediate receptacle device is divided into
Pressure difference branch pipe A4.11 and pressure difference branch pipe B4.12 are connected with, pressure difference branch pipe A4.11 is connected with constant-flux pump 9 and flow container 10 in turn, pressure
Liquid flowing valve 19 is provided with pressure difference branch pipe A4.11 between difference pipeline 4.1 and constant-flux pump 9；
Pressure difference branch pipe B4.12 is connected with gas cylinder 11；Pressure difference branch pipe between pressure difference pipeline 4.1 and gas cylinder 11
Air intake valve 20 is provided with B4.12；
Pressure difference pipeline 4.1 goes back the second intermediate receptacle device 8.1 of parallel connection, 8 and second intermediate receptacle of intermediate receptacle device dress
Put 8.1 sides and be respectively connected with valve 18；Branch pipe 12 is connected to pumped vacuum systems 13 and back pressure device 14, and back pressure device 14 is connected with
Balance 15.
Above-mentioned multifunctional network fracture condudtiviy test system assembles method is as follows：
1. preparing diversion chamber, water conservancy diversion chamber enclosure 1.5 is rotatablely installed on diversion chamber chassis 1.2 first, then according to net
Proppant is laid on diversion chamber chassis 1.2 by network form, diversion chamber's plunger 1.4 is placed on proppant, and ensure proppant
Thickness is uniform, and finally whole diversion chamber is placed on above hydraulic device.
2. connecting pipeline, inlet/outlet pipeline, pressure difference, flow measurement pipeline etc. are connected, and heating rod is put into heating
In hole 1.13, heated according to requirement of experiment, prepare flow conductivity test.
Using above-mentioned multifunctional network fracture condudtiviy test system detectio fluid media (medium), (fluid media (medium) is liquid or gas
Body) method, it is specific as follows：
1) multifunctional network fracture guide instrument 1 is placed on hydraulic loading device 16, close air intake valve 20, open into
Fluid valve 19, fluid media (medium) enters diversion chamber's central inlet 1.21 by fluid flowmeter 3 and pressure difference instrument 4, by diversion chamber chassis
1.2 centers are spread around, into metering orifice 1.51 and pressure difference hole 1.52, test outlet pressure；
2) testing standard progressively at the same time, is pressurized on multifunctional network fracture guide instrument 1 by hydraulic loading device 16
Pressure value, and utilize the thickness change of the first displacement instrument 5 and the test proppant of second displacement instrument 6；Above-mentioned data are adopted by data
Collecting system 2 is automatically transferred in computer, according to recorded data, can calculate flow conductivity at different moments.
Since proppant is laid according to certain network format, no matter it is used as and is situated between by the use of liquid or gas
Matter, the flow conductivity tested all are the fracture network flow conductivities of reflection.This is led with existing using rectangular slat shape
The flow conductivity difference that chute is tested is larger, because existing equipment is only capable of simulation fracture linear flow, it is impossible to which simulation is split
Stitch network.The equipment newly researched and developed can abundant simulation fracture network, more can truly reflect actual flow regime.
Above-mentioned detection finishes release multifunctional network fracture condudtiviy test system：Dismounting cleaning diversion chamber, checks electricity
The data such as the flow of automatic collection, pressure difference, displacement and temperature and fracture network flow conductivity curve in brain.
Other detections are can be also used for using above-mentioned multifunctional network fracture condudtiviy test system：Its other test work(
Energy method and the above method are essentially identical.Particular use is as follows：
1) proppant, is uniformly laid on diversion chamber chassis by radial direction water conservancy diversion aptitude tests according to conventional sanding mode,
Liquid or gas is selected to carry out flow conductivity test as test fluid.Obtained flow conductivity, can more reflect crack closure
Or the fluidised form of pressure break later stage, complementation is formed with the linear flow conductivity of existing equipment test, more fully.
2) proppant breaking capacity and strength test, according to proppant evaluation criterion, the proppant of certain mass is laid
After diversion chamber, diversion chamber is placed on hydraulic device, is pressurizeed according to certain loading velocity.After standard value is pressurized to,
Stop release, determine the percentage of damage and compression strength of proppant.
3) test of fracture width and embedding depth of proppant, water conservancy diversion is laid on according to certain sanding concentration by proppant
Interior, is progressively pressurized to certain clossing pressure value, and corresponding fracture width is tested using displacement measurement instrument；Water conservancy diversion is cleared up in release
Room, is put into correspondingly sized rock beam in diversion trench, and then proppant is laid on rock beam according to sanding concentration before this, paving
Put finish and it is smooth after, another block of rock beam is being placed above.Clossing pressure value before this is loaded into, is determined using displacement measurement instrument
Corresponding fracture width.The difference of two kinds of fracture widths, is exactly insert depth of the proppant in rock beam.
4) long-term flow conductivity is tested, and is required according to the testing time, in the case of the long-term voltage stabilizing of hydraulic device, is grown
The even flow conductivity test of several months up to one week.It can select liquid or gas, uniformly lay proppant or by network format
Lay and whether place rock beam etc., therefore, experimental simulation scope is wider, powerful.
Other unspecified parts are the prior art.Although above-described embodiment is made that the present invention and retouches in detail
State, but it is only part of the embodiment of the present invention, rather than whole embodiments, people can also according to the present embodiment without
Other embodiment is obtained under the premise of creativeness, these embodiments belong to the scope of the present invention.
Claims (10)
1. a kind of multifunctional network fracture condudtiviy tests system, it is characterised in that：Including multifunctional network fracture guide instrument
(1) and data collecting system (2), the data collecting system (2) are connected to flow measurement instrument (3), the first pressure difference instrument
(4), the first displacement instrument (5), second displacement instrument (6) and the second pressure difference instrument (7)；The multifunctional network fracture guide instrument (1) is logical
Inflow-rate of water turbine pipeline (3.1), the first displacement pipeline (5.1), second displacement pipeline (6.1) and the second pressure difference pipeline (7.1) respectively with
Flow measurement instrument (3), the first displacement instrument (5), second displacement instrument (6) and the connection of the second pressure difference instrument (7), the first pressure difference instrument
(4) intermediate receptacle device (8) is connected with by pressure difference pipeline (4.1), intermediate receptacle device (8) other end, which is divided into, to be connected with
Pressure difference branch pipe A (4.11) and pressure difference branch pipe B (4.12), the pressure difference branch pipe A (4.11) are connected with constant-flux pump (9) and flow container in turn
(10), the pressure difference branch pipe B (4.12) is connected with gas cylinder (11)；The multifunctional network fracture guide instrument (1) and second
Branch pipe (12) is connected with the second pressure difference pipeline (7.1) between pressure difference instrument (7), the branch pipe (12), which is connected to, to be vacuumized
System (13) and back pressure device (14), the back pressure device (14) are connected with balance (15).
2. multifunctional network fracture condudtiviy test system according to claim 1, it is characterised in that：The multifunctional mesh
Network fracture guide instrument (1) includes base (1.1), and discoid diversion chamber chassis (1.2), institute are provided with the base (1.1)
State diversion chamber chassis (1.2) upper face center and be provided with diversion chamber's central inlet (1.21), diversion chamber chassis (1.2) side face
On be cased with circular strainer (1.3), diversion chamber chassis (1.2) upper surface is provided with diversion chamber's column of hollow cylindrical shape
Fill in (1.4), and diversion chamber's plunger (1.4) is inserted on diversion chamber's central inlet (1.21) and fixes, diversion chamber's plunger (1.4) is outside
Water conservancy diversion chamber enclosure (1.5) is cased with, the diversion chamber chassis (1.2) is connected through a screw thread with water conservancy diversion chamber enclosure (1.5).
3. multifunctional network fracture condudtiviy test system according to claim 1, it is characterised in that：Outside the diversion chamber
The cylinder that shell (1.5) is gradually reduced by multiple diameters is stacked and formed, and the metering orifice (1.51) and pressure difference hole (1.52) open up
On diversion chamber (1.5) bottommost cylindrical body outer wall, also symmetrically opened on water conservancy diversion chamber enclosure (1.5) the topmost cylindrical body outer wall
Equipped with recess hole (1.53), for being rotatablely installed water conservancy diversion chamber enclosure (1.5).
4. multifunctional network fracture condudtiviy test system according to claim 3, it is characterised in that：The metering orifice
(1.51) it is connected by flow pipeline (3.1) with flow measurement instrument (3), the pressure difference hole (1.52) passes through the second pressure difference pipeline
(7.1) it is connected with the second pressure difference instrument (7)；Between the metering orifice (1.51) and pressure difference hole (1.52) by afflux pipeline (21) even
Connect, afflux pipeline (21) both ends are connected with flow pipeline (3.1) and the second pressure difference pipeline (7.1) respectively；Two symmetrical recessed
Slot (1.53) by the first displacement pipeline (5.1) and second displacement pipeline (6.1) respectively with the first displacement instrument (5), second
Move instrument (6) connection.
5. multifunctional network fracture condudtiviy test system according to claim 1, it is characterised in that：The base
(1.1) side wall centers are provided with gas-liquid import (1.11), the gas-liquid import (1.11) and flow measurement instrument (3) and middle appearance
Pressure difference pipeline (4.1) connects between device device (8), symmetrical on the side wall of the base (1.1) of gas-liquid import (1.11) both sides
Bottoming hole (1.12) is provided with, the bottoming hole (1.12) is connected with heating rod (17), and liquid is provided with below the base (1.1)
Press loading device (16).
6. multifunctional network fracture condudtiviy test system according to claim 1, it is characterised in that：The pressure difference pipeline
(4.1) parallel connection the second intermediate receptacle device (8.1), the intermediate receptacle device (8) and the second intermediate receptacle device (8.1) are gone back
Side is respectively connected with valve (18).
7. multifunctional network fracture condudtiviy test system according to claim 1, it is characterised in that：The pressure difference pipeline
(4.1) it is provided with liquid flowing valve (19) on the pressure difference branch pipe A (4.11) between constant-flux pump (9).
8. multifunctional network fracture condudtiviy test system according to claim 1, it is characterised in that：The pressure difference pipeline
(4.1) it is provided with air intake valve (20) on the pressure difference branch pipe B (4.12) between gas cylinder (11).
9. a kind of method of multifunctional network fracture condudtiviy test system detectio fluid media (medium) described in claim 1, it is special
Sign is：Comprise the following steps：
1) multifunctional network fracture guide instrument (1) is placed on hydraulic loading device (16), closes air intake valve (20), opened
Liquid flowing valve (19), fluid media (medium) enter diversion chamber's central inlet (1.21) by fluid flowmeter (3) and pressure difference instrument (4), by
Diversion chamber chassis (1.2) center is spread around, into metering orifice (1.51) and pressure difference hole (1.52), tests outlet pressure；
2) testing standard progressively at the same time, is pressurized on multifunctional network fracture guide instrument (1) by hydraulic loading device (16)
Pressure value, and utilize the thickness change of the first displacement instrument (5) and second displacement instrument (6) test proppant；Above-mentioned data pass through number
It is automatically transferred to according to acquisition system (2) in computer, according to recorded data, calculates flow conductivity at different moments.
10. multifunctional network fracture condudtiviy test system is used for the aptitude tests of radial direction water conservancy diversion, branch described in a kind of claim 1
Support answering in agent breaking capacity and strength test, the test of fracture width and embedding depth of proppant and long-term flow conductivity test
With.
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| CN201711160186.7A CN107976392B (en) | 2017-11-20 | 2017-11-20 | Multifunctional network crack flow conductivity testing system and detection method and application thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110702524A (en) * | 2018-07-10 | 2020-01-17 | 中国石油天然气股份有限公司 | Self-supporting solid-phase breakage rate testing device and method |
| CN111060284A (en) * | 2020-01-02 | 2020-04-24 | 中海石油(中国)有限公司 | Testing device and method for simulating proppant backflow after fracture closure |
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| CN111060284B (en) * | 2020-01-02 | 2021-07-06 | 中海石油(中国)有限公司 | Testing device and method for simulating proppant backflow after fracture closure |
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