CN109668812A - Proppant long-term flow conductivity test device and its application method - Google Patents
Proppant long-term flow conductivity test device and its application method Download PDFInfo
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- CN109668812A CN109668812A CN201910017172.2A CN201910017172A CN109668812A CN 109668812 A CN109668812 A CN 109668812A CN 201910017172 A CN201910017172 A CN 201910017172A CN 109668812 A CN109668812 A CN 109668812A
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- 238000012360 testing method Methods 0.000 title claims abstract description 58
- 230000007774 longterm Effects 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000006073 displacement reaction Methods 0.000 claims abstract description 39
- 238000002474 experimental method Methods 0.000 claims abstract description 39
- 238000009413 insulation Methods 0.000 claims abstract description 19
- 239000007788 liquid Substances 0.000 claims description 67
- 239000012530 fluid Substances 0.000 claims description 28
- 238000010438 heat treatment Methods 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 238000001802 infusion Methods 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 238000005086 pumping Methods 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 2
- 230000008859 change Effects 0.000 abstract description 9
- 238000005259 measurement Methods 0.000 abstract description 5
- 239000002253 acid Substances 0.000 description 6
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- 230000001737 promoting effect Effects 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910000856 hastalloy Inorganic materials 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
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- 239000004576 sand Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
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Abstract
The invention discloses a kind of proppant long-term flow conductivity test device and its application methods, it include be located at temp controlled thermal insulation case outside hydraulic device, at least two diversion chamber on the hydraulic platform of same hydraulic device are arranged in upper and lower stack combinations, and diversion chamber side, the photoelectric displacement sensor for acquiring diversion chamber's piston displacement variation are set.By the way that temp controlled thermal insulation case to be located at outside hydraulic device, to provide stable experimental situation for experimental provision, guarantee the accuracy of experiment；Stack combinations above and below multiple diversion chamber are arranged on the hydraulic platform of same hydraulic device simultaneously, pressurization experiment is carried out to Liang Ge diversion chamber simultaneously by a hydraulic device, not only realize cost savings, also improve conventional efficient, and use photoelectric displacement sensor, it is higher that it compares existing crossbar type displacement sensor precision, reduces the measurement error of proppant thickness change.
Description
Technical field
The present invention relates to a kind of water conservancy diversion experimental provisions, and in particular to a kind of proppant long-term flow conductivity test device and its
Application method.
Background technique
Hydraulic fracturing is used as most effective unconventional oil and gas field well stimulation at this stage, it is therefore an objective to form height in the earth formation and lead
The sand packed fracture of stream ability.Matching the preferred proppant of man-made fracture flow conductivity according to reservoir characteristics is the pass for realizing cost efficiency
Key carries out long-term flow conductivity experiment, gained experiment using different type, different-grain diameter proppant by simulation stratum condition
Data are to live fracturing parameter with reference function.
Rock clossing pressure, formation temperature and fluid flow state are tested not in usual laboratory experiment main analog stratum
The flow conductivity of same type proppant.According to " shale proppant pack long-term flow conductivity measures recommended method (NBT_
14023-2017) ", when liquid surveys flow conductivity, need to stablize 50 ± 2h under each clossing pressure, time-consuming for one group of experiment of test,
Low efficiency, there is an urgent need to improve conventional efficient.
Used long-term flow conductivity test device at this stage, generally single diversion chamber, can only carry out one group of reality every time
It tests, conventional efficient is low；Experiment relies on hydraulic press loading simulation formation closure pressure, when a set of equipment is only single diversion chamber, equipment
Cost input improves, and utilization rate is low；Conventional equipment can not carry out acid-base property fluid experiment；Laboratory ambient temperature to diversion chamber,
Fluid temperature (F.T.) is affected, and conventional equipment diversion chamber is directly exposed to air, and experimental temperature is influenced by ambient temperature big, influences
Test accuracy；Regular contact displacement sensor will cause contact bar deformation during long-term experiment, cause proppant thick
Spend monitoring data inaccuracy；Occurs the case where proppant or impurity blocking pipeline in experiment, pressure is increased suddenly to high-precision
Pressure gauge, difference gauge and constant-flux pump will cause very big damage, need to stop experiment at once at this time, but conventional equipment can not be real
This existing function；Therefore, the great necessity of novel experimental test device that one kind is high-efficient, at low cost, has a safety feature is designed.
Summary of the invention
In view of the problems of the existing technology the present invention, provides a kind of proppant long-term flow conductivity test device and its makes
With method, solve that existing proppant long-term flow conductivity test device low efficiency, at high cost, security performance be poor and experimental precision
There is technical issues that.
In order to solve the above technical problems, the present invention provides a kind of proppant long-term flow conductivity test device comprising
Temp controlled thermal insulation case；
Hydraulic device in the temp controlled thermal insulation case is set；
At least two diversion chamber on the hydraulic platform of hydraulic device are arranged in upper and lower stack combinations, and all diversion chamber are logical
It crosses connecting pipe to connect with a set of liquid feeding system, a set of refueling system, is respectively equipped with liquid on the liquid feeding system and refueling system
Fluid meter and gasometer；And in the diversion cavity of each diversion chamber, along feed inlet to the ontology in discharge port direction
Be uniformly distributed on length direction and connect port equipped with multiple difference gauges, difference gauge connection port pass through respectively connecting pipe with
Multiple pressure acquisition ports of one difference gauge connect one to one；
The vacuum pumping pump being connected to simultaneously with the diversion cavity of all diversion chamber by connecting pipe；
It is embedded in the diversion chamber, for making the heating of water conservancy diversion cavity temperature maintenance at a set temperature in diversion chamber
Stick；And
Diversion chamber side, the photoelectric displacement sensor for acquiring diversion chamber's piston displacement variation are set.
Preferably, each liquid outlet is both provided with the anti-stream strainer of proppant in the diversion chamber.
Preferably, the liquid feeding system includes being connected to setting with the feed inlet of each diversion chamber respectively by connecting pipe
Fluid reservoir, and be connected to the discharge port of each diversion chamber by connecting pipe the liquid of setting and collect meter, wherein
Connecting pipe between the fluid reservoir and diversion chamber is equipped with constant-flux pump.
Preferably, the connecting pipe between the constant-flux pump and diversion chamber is equipped with fluid infusion intermediate piston container, the benefit
The upper and lower ends of liquid intermediate piston container are respectively equipped with two-bit triplet solenoid valve and lower two-bit triplet solenoid valve, and described upper two
The feed liquor interface of three-way magnetic valve is connect by pipeline with fluid reservoir, and the liquid interface that goes out of the upper two-bit triplet solenoid valve passes through pipe
Road with diversion chamber for connecting.
Preferably, the refueling system includes being connected to setting with the feed inlet of each diversion chamber respectively by connecting pipe
Air accumulator, and be connected to the discharge port of each diversion chamber by connecting pipe the exhaust outlet of setting, wherein the liquid storage
Connecting pipe between tank and diversion chamber is equipped with gasometer.
Preferably, the proppant long-term flow conductivity test device further includes a controlling terminal, the controlling terminal packet
A parameter setting module is included, the parameter setting module passes through control module and temp controlled thermal insulation case, hydraulic device and heating in one
Stick is electrically connected.
Preferably, the controlling terminal further includes a data acquisition module, and the data acquisition module passes through middle control module
It is communicated to connect with difference gauge, liquid meter, gasometer and photoelectric displacement sensor.
Preferably, the discharge port of the diversion chamber is equipped with pressure sensor, and the pressure sensor, which passes through in one, controls module
It is electrically connected with the constant-flux pump in the liquid feeding system.
Preferably, the discharge pipe of the diversion chamber is equipped with pressure gauge and back-pressure valve, and the pressure gauge passes through to be controlled in one
Module and the back-pressure valve are electrically connected.
A kind of application method of proppant long-term flow conductivity test device, the proppant long-term flow conductivity test dress
The application method set is as follows:
Diversion chamber is superimposed up and down and is placed on the hydraulic platform of hydraulic device, and is clamped up and down, photoelectric displacement is sensed
Device carries out zero calibration, is then vacuumized to diversion cavity and proppant to be detected is added；It is arranged in temp controlled thermal insulation case
Temperature different diversion cavities is arranged different experimental temperatures by heating rod, when water conservancy diversion cavity temperature reaches set temperature, opens
Hydrodynamic pressure device pressurizes to diversion chamber, and injection experiments liquid or experimental gas into multiple diversion cavities respectively, remembers in real time
The data for recording difference gauge, photoelectric displacement sensor and liquid meter and gasometer are passed according to difference gauge, photoelectric displacement
The flow conductivity of the data of sensor and liquid meter and gasometer calculating proppant.
Proppant long-term flow conductivity test device and its application method of the present invention, by by temp controlled thermal insulation case cover
Outside hydraulic device, to provide stable experimental situation for experimental provision, guarantee the accuracy of experiment；It is led simultaneously by multiple
Stack combinations are arranged on the hydraulic platform of same hydraulic device flow chamber up and down, are led simultaneously to two by a hydraulic device
Flow chamber carries out pressurization experiment, not only realizes cost savings, also improves conventional efficient, and use photoelectric displacement sensor,
It is higher to compare existing crossbar type displacement sensor precision, reduces the measurement error of proppant thickness change.Branch of the present invention
Support agent long-term flow conductivity test device, structure is simple, easy to operate, can be applicable in simultaneously long-term flow conductivity test experiments with
Short-term flow conductivity test experiments are suitable for promoting the use of.
Detailed description of the invention
Fig. 1 is the overall structure diagram of proppant long-term flow conductivity test device of the present invention；
Fig. 2 is the experimental principle schematic diagram of proppant long-term flow conductivity test device of the present invention；
Fig. 3 is the control principle schematic diagram of proppant long-term flow conductivity test device of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
The embodiment of the present invention provides a kind of proppant long-term flow conductivity test device comprising
Temp controlled thermal insulation case 1；
Hydraulic device 2 in the temp controlled thermal insulation case 1 is set；
At least two diversion chamber 4 on the hydraulic platform of hydraulic device 2, all diversion chamber 4 are arranged in upper and lower stack combinations
It is connect by connecting pipe with a set of liquid feeding system 10, a set of refueling system 11, the liquid feeding system 10 and refueling system 11
On be respectively equipped with liquid and collect meter 105 and gasometer 112；And in the diversion cavity of each diversion chamber 4, along into
Material mouth is uniformly distributed in the body length direction in discharge port direction connects port, the difference gauge 12 equipped with multiple difference gauges 12
Connection port passes through connecting pipe respectively and multiple pressure acquisition ports of a difference gauge 12 connect one to one；
The vacuum pumping pump 5 being connected to simultaneously with the diversion cavity of all diversion chamber 4 by connecting pipe；
Be embedded in the diversion chamber 4, for make water conservancy diversion cavity temperature in diversion chamber 4 maintain at a set temperature plus
Hot pin 6；And
4 side of diversion chamber, the photoelectric displacement sensor 7 for acquiring 4 piston displacement of diversion chamber variation are set.
By the way that temp controlled thermal insulation case 1 is covered on outside hydraulic device 2, so that stable experimental situation is provided for experimental provision,
Guarantee the accuracy of experiment；Multiple about 4 stack combinations of diversion chamber are arranged in the hydraulic platform of same hydraulic device 2 simultaneously
On, pressurization experiment is carried out to Liang Ge diversion chamber 4 simultaneously by a hydraulic device 2, cost savings is not only realized, also improves
Conventional efficient, and photoelectric displacement sensor 7 is used, it is higher to compare existing crossbar type displacement sensor precision, reduces support
The measurement error of agent thickness change.Proppant long-term flow conductivity test device of the present invention, structure is simple, easy to operate,
It can be applicable in long-term flow conductivity test experiments and short-term flow conductivity test experiments simultaneously, be suitable for promoting the use of.
Embodiment 1:
In order to solve, existing proppant long-term flow conductivity test device low efficiency, at high cost, security performance is poor and real
Testing precision there is technical issues that.The embodiment of the present invention 1 provides a kind of proppant long-term flow conductivity test device,
Including temp controlled thermal insulation case 1, hydraulic device 2, compensation pump 3, diversion chamber 4, vacuum pumping pump 5, heating rod 6, photoelectric displacement sensor 7,
Controlling terminal 8, middle control module 9.
The temp controlled thermal insulation case 1 covers on outside hydraulic device 2, and stable experimental situation is provided for experimental provision, guarantees real
The accuracy tested.
As depicted in figs. 1 and 2, the hydraulic platform of same hydraulic device 2 is arranged in about 4 stack combinations of Liang Ge diversion chamber
On, it is pressurizeed simultaneously to Liang Ge diversion chamber 4 by a hydraulic device 2, to save experimental cost, and the hydraulic dress
Setting 2 further includes compensation pump 3, and the compensation pump 3 is for carrying out the accurate pressure control in small range to hydraulic device 2.
All diversion chamber 4 pass through connecting pipe and a set of liquid feeding system 10 (not indicating in figure), a set of refueling system 11
(not indicated in figure) connection, specifically, as shown in Fig. 2, the liquid feeding system 10 includes fluid reservoir 101, constant-flux pump 102, fluid infusion
Intermediate piston container 103, preheating chamber 104 and liquid collect meter 105, and the fluid reservoir 101 is distinguished by connecting pipe
Setting is connected to the feed inlet of each diversion chamber 4, the company between fluid reservoir 101 and diversion chamber 4 is arranged in the constant-flux pump 102
On adapter tube road, the fluid infusion intermediate piston container 103 is arranged in the connecting pipe between constant-flux pump 102 and diversion chamber 4, described
Preheating chamber 104 is arranged in the connecting pipe between fluid infusion intermediate piston container 103 and diversion chamber 4, for leading to will enter
Experimental liquid in stream chamber is heated；The liquid collects the going out by connecting pipe and each diversion chamber 4 of meter 105
Material mouth connection setting, for measuring experimental liquid within the unit time by the flow of diversion cavity inner support agent.The diversion chamber 4
Each input duct and liquid outlet pipe on be respectively equipped with liquid feed valve and liquid valve, each air inlet pipe of the diversion chamber 4
Intake valve and air outlet valve are respectively equipped on road and outlet pipe.
The upper and lower ends of the fluid infusion intermediate piston container 103 are respectively equipped with two-bit triplet solenoid valve and lower two-bit triplet
The feed liquor interface of solenoid valve, the upper two-bit triplet solenoid valve is connect by pipeline with fluid reservoir 101, the upper two-bit triplet electricity
Magnet valve goes out liquid interface by pipeline for connecting with diversion chamber 4.The specific structure of the fluid infusion intermediate piston container 103 is preferred
Application reference number is the application for a patent for invention file of " 201821904023.5 ".
As shown in Fig. 2, the refueling system 11 includes air accumulator 111, gasometer 112, exhaust outlet 113, the storage
Gas tank 111 is connected to setting by connecting pipe with the feed inlet of each diversion chamber 4 respectively, and the gasometer 112 is arranged
In connecting pipe between the fluid reservoir 101 and diversion chamber 4, pass through water conservancy diversion within the unit time for measuring experimental gas
The flow of intracavitary proppant；The exhaust outlet 113 is connected to setting with the discharge port of each diversion chamber 4 by connecting pipe, uses
It is discharged in the gas that will flow out diversion cavity.
It is uniform in the body length direction in discharge port direction along feed inlet in the diversion cavity of each diversion chamber 4
It is distributed with three difference gauges 12 and connects port, the difference gauge 12 connects port and passes through connecting pipe and a difference gauge 12 respectively
Three pressure acquisition ports connect one to one, for acquiring the pressure difference of diversion cavity different location.
To guarantee that the temperature in diversion cavity remains accurately at set temperature, as depicted in figs. 1 and 2, each described water conservancy diversion
Heating rod 6 and temperature sensor 13 are equipped in room 4, the heating rod 6 is embedded in the inner wall of diversion cavity, adds to diversion cavity
Heat, the temperature sensor 13 are electrically connected by middle control module 9 with the heating rod 6, and the working time of heating rod 6 is controlled,
Maintain the water conservancy diversion cavity temperature in diversion chamber 4 at a set temperature.
As shown in Figure 1,4 side of diversion chamber is equipped with photoelectric displacement sensor 7, the photoelectric displacement sensor 7 passes through
Emit infrared ray to diversion chamber's piston rod 41 for being disposed there above, and receive infrared ray that diversion chamber's piston rod 41 is reflected back from
And identify the change in displacement of 41 diversion chamber of diversion chamber's piston rod, i.e. the change in displacement of 4 piston of diversion chamber, 4 piston of diversion chamber
Change in displacement be proppant in diversion cavity thickness change, photoelectric displacement sensor 7 of the present invention compares existing cross bar
Formula displacement sensor precision is higher, reduces the measurement error of proppant thickness change.
It meanwhile being to avoid proppant or impurity blocking pipeline from increasing pressure suddenly to cause to high-precision pressure gauge
15, the problem of difference gauge 12 and constant-flux pump 102 will cause very big damage, the present invention by the diversion chamber 4 each
Liquid outlet is both provided with the anti-stream strainer of proppant, prevents proppant or impurity blocking pipeline.
The vacuum pumping pump 5 is connected to the diversion cavity of all diversion chamber 4 simultaneously by connecting pipe, is carrying out testing it
Before, vacuumize process is carried out to diversion cavity, makes to avoid original air or impurity in diversion cavity in perfect vacuum state in diversion cavity
Experimental result is impacted.
Diversion chamber 4 of the present invention and its mating fluid infusion intermediate piston container 103, temperature sensor 13, pressure sensor
14, connecting pipe and control valve are that Hastelloy is made, using the acid resistance of Hastelloy, to make branch of the present invention
Support agent long-term flow conductivity test device can adapt to acid-base property fluid experiment.
The proppant long-term flow conductivity test device further includes a controlling terminal 8, as shown in figure 3, the control is eventually
End 8 includes a parameter setting module 81, and the parameter setting module 81 passes through control module 9 and temp controlled thermal insulation case 1, hydraulic dress in one
2 and the electric connection of heating rod 6 are set, so that accurate intelligent controls the experiment parameters such as temperature and on-load pressure；The controlling terminal 8
It further include a data acquisition module 82, the data acquisition module 82 is collected with difference gauge 12, liquid by middle control module 9 and measured
Device 105, gasometer 112 and photoelectric displacement sensor 7 communicate to connect；For automatic collection difference gauge during the experiment
12, photoelectric displacement sensor 7 and liquid collect all data of meter 105 and gasometer 112, according to difference gauge
12, photoelectric displacement sensor 7 and liquid collect the water conservancy diversion of the data calculating proppant of meter 105 and gasometer 112
Ability.
Meanwhile the inlet port and outlet port of the diversion chamber 4 are equipped with pressure sensor 14, the pressure sensor 14 is logical
The constant-flux pump 102 crossed in control module 9 and the liquid feeding system 10 is electrically connected, the fluid pressure measured by the pressure sensor 14
When power is more than protection pressure, overvoltage protection signal is sent to middle control module 9, liquid is interrupted by middle control module 9 control constant-flux pump 102
It injects and starts to alarm；The discharge pipe of the diversion chamber 4 is equipped with pressure gauge 15 and back-pressure valve 16, the pressure gauge 15 and returns
Pressure valve 16 is connected by middle control module 9 and the communication connection of parameter setting module 81, and the outflow for test medium in diversion chamber 4 provides
One setting pressure, guarantees that test medium stablizes outflow；The compensation pump 3 is communicated by middle control module 9 with parameter setting module 81
Connection, for when middle control module 9 detects hydraulic device 2 with respect to setup pressure value difference smaller range, control to compensate 3 works of pump
Make, differential pressure is provided；The liquid feed valve and liquid valve, intake valve and air outlet valve of the diversion chamber 4 are also electrical with middle control module 9
Connection controls its intelligent switch by middle control module 9.
Based on above-mentioned proppant long-term flow conductivity test device, the present invention also provides a kind of proppant long-term flow conductivities
The application method of the application method of test device, the proppant long-term flow conductivity test device is as follows:
The superposition of about 4 diversion chamber is placed on the hydraulic platform of hydraulic device 2, and is clamped up and down, is made in diversion chamber 4
Piston presses to the bottom of diversion cavity, carries out zero calibration to photoelectric displacement sensor 7, has marked the zero height of piston, so
Diversion cavity is vacuumized afterwards, is made in perfect vacuum state in diversion cavity, then proppant to be detected is added into diversion cavity,
Complete preliminary preparation；
Temperature in temp controlled thermal insulation case 1 is set, different experimental temperatures is set by 6 pairs of heating rod different diversion cavities, when
When water conservancy diversion cavity temperature reaches set temperature, starting hydraulic device 2 pressurizes to diversion chamber 4, and respectively to two diversion cavities
Interior injection experiments liquid or experimental gas record difference gauge 12, photoelectric displacement sensor 7 and liquid in real time and collect meter
105 and gasometer 112 data, according to difference gauge 12, photoelectric displacement sensor 7 and liquid collect 105 and of meter
The data of gasometer 112 calculate the flow conductivity of proppant.
To be further ensured that experimental precision, when specific experiment, Liang Ge diversion chamber 4 can be according to the unit time alternately to two
It injects liquid in a diversion chamber 4, behind the preheated room 104 of liquid flow, passes through hollow module control and open a diversion chamber 4 every time
Liquid feed valve and liquid valve in input duct and liquid outlet pipe, the same time is only to a 4 injection experiments liquid of diversion chamber, observation
And related data is recorded, after the unit time, the liquid feed valve and liquid valve of the diversion chamber 4 are closed, and open another diversion chamber 4
Liquid feed valve and liquid valve, the injection experiments liquid into another diversion chamber 4 observes and records related data, and Liang Ge diversion chamber 4 hands over
For progress, it so can not only guarantee experimental precision, save the time and improve efficiency, liquid consumption can also be reduced, reduce weight
Multiple experimental data, data processing are simple.Gas survey experiment is similar to liquid survey, can also carry out different realities to two diversion cavities simultaneously
It tests in the experiment of medium, such as a diversion chamber 4 and carries out the experiment of experimental liquid, carry out experimental gas in another diversion chamber 4
Experiment, then into Liang Ge diversion chamber 4 can be injected separately into experimental liquid and experimental gas simultaneously, thus complete two kinds it is different real
The experiment of medium is tested, experimental period may further be also saved, improve conventional efficient.
Proppant long-term flow conductivity test device and its application method of the present invention, by by temp controlled thermal insulation case 1
It covers on outside hydraulic device 2, to provide stable experimental situation for experimental provision, guarantees the accuracy of experiment；It simultaneously will be more
A about 4 stack combinations of diversion chamber are arranged on the hydraulic platform of same hydraulic device 2, simultaneously by a hydraulic device 2
Pressurization experiment is carried out to Liang Ge diversion chamber 4, not only realizes cost savings, also improves conventional efficient, and use photoelectric displacement
Sensor 7, it is higher to compare existing crossbar type displacement sensor precision, reduces the measurement error of proppant thickness change.This
The proppant long-term flow conductivity test device is invented, structure is simple, and it is easy to operate, it can be applicable in long-term flow conductivity simultaneously
Test experiments and short-term flow conductivity test experiments are suitable for promoting the use of.
The scope of application of proppant long-term flow conductivity test device of the present invention is not limited solely to the gas of proppant
It surveys, liquid surveys flow conductivity experiment, also following purposes:
Proppant embedment influences to test on flow conductivity, under certain sanding concentration and clossing pressure, is carried out using steel plate
Test records proppant thickness；It uses rock beam instead, in the case where identical sanding concentration is loaded onto clossing pressure, records proppant thickness, it is thick
The difference of degree is embedding depth of proppant, can study influence of the proppant embedment to flow conductivity.
Acidic fracturing fluid influences to test on flow conductivity, and acid can dissolve proppant particles, makes the reduction of proppant bearing capacity,
Proppant thickness reduces, and is affected to flow conductivity, and the set experimental facilities diversion chamber 4 and corollary equipment are that acidproof Kazakhstan is closed
Golden material can study the influence of acidic fracturing fluid fracture width, flow conductivity.
Acid fracturing rock beam etching is tested, and after being packed into rock beam in diversion chamber 4, would be heated to the acid solution injection of certain temperature, experiment
After clean rock beam, observe rock beam surface etch form, etch profile is affected to flow conductivity, changes acids in experiment
The factors such as type, discharge capacity study influence of the acid etch to flow conductivity.
The above described specific embodiments of the present invention are not intended to limit the scope of the present invention..Any basis
Any other various changes and modifications that technical concept of the invention is made should be included in the guarantor of the claims in the present invention
It protects in range.
Claims (10)
1. a kind of proppant long-term flow conductivity test device, which is characterized in that including
Temp controlled thermal insulation case；
Hydraulic device in the temp controlled thermal insulation case is set；
At least two diversion chamber on the hydraulic platform of hydraulic device are arranged in upper and lower stack combinations, and all diversion chamber pass through company
Adapter tube road is connect with a set of liquid feeding system, a set of refueling system, is respectively equipped with level meter on the liquid feeding system and refueling system
Measuring device and gasometer；And in the diversion cavity of each diversion chamber, along feed inlet to the body length in discharge port direction
It is uniformly distributed on direction and connects port equipped with multiple difference gauges, difference gauge connection port passes through connecting pipe and one poor respectively
Multiple pressure acquisition ports of pressure meter connect one to one；
The vacuum pumping pump being connected to simultaneously with the diversion cavity of all diversion chamber by connecting pipe；
It is embedded in the diversion chamber, for making the heating rod of water conservancy diversion cavity temperature maintenance at a set temperature in diversion chamber；
And
Diversion chamber side, the photoelectric displacement sensor for acquiring diversion chamber's piston displacement variation are set.
2. proppant long-term flow conductivity test device according to claim 1, which is characterized in that each in the diversion chamber
A liquid outlet is both provided with the anti-stream strainer of proppant.
3. proppant long-term flow conductivity test device according to claim 1, which is characterized in that the liquid feeding system includes
By connecting pipe respectively be connected to the feed inlet of each diversion chamber setting fluid reservoir, and by connecting pipe with it is each
The liquid of the discharge port connection setting of a diversion chamber collects meter, wherein the connecting tube between the fluid reservoir and diversion chamber
Road is equipped with constant-flux pump.
4. proppant long-term flow conductivity test device according to claim 3, which is characterized in that the constant-flux pump and water conservancy diversion
Connecting pipe between room is equipped with fluid infusion intermediate piston container, and the upper and lower ends of the fluid infusion intermediate piston container are respectively equipped with
The feed liquor interface of upper two-bit triplet solenoid valve and lower two-bit triplet solenoid valve, the upper two-bit triplet solenoid valve passes through pipeline and storage
Flow container connection, the upper two-bit triplet solenoid valve go out liquid interface by pipeline for connecting with diversion chamber.
5. proppant long-term flow conductivity test device according to claim 1, which is characterized in that the refueling system includes
By connecting pipe respectively be connected to the feed inlet of each diversion chamber setting air accumulator, and by connecting pipe with it is each
The exhaust outlet of the discharge port connection setting of a diversion chamber, wherein the connecting pipe between the fluid reservoir and diversion chamber is equipped with
Gasometer.
6. proppant long-term flow conductivity test device according to claim 1, which is characterized in that the proppant is led for a long time
Stream aptitude tests device further includes a controlling terminal, and the controlling terminal includes a parameter setting module, the parameter setting mould
Block passes through control module and temp controlled thermal insulation case, hydraulic device and heating rod in one and is electrically connected.
7. proppant long-term flow conductivity test device according to claim 6, which is characterized in that the controlling terminal is also wrapped
Include a data acquisition module, the data acquisition module by middle control module and difference gauge, liquid meter, gasometer with
And photoelectric displacement sensor communication connection.
8. proppant long-term flow conductivity test device according to claim 7, which is characterized in that the discharging of the diversion chamber
Mouth is equipped with pressure sensor, and the pressure sensor passes through control module in one and electrically connects with the constant-flux pump in the liquid feeding system
It connects.
9. proppant long-term flow conductivity test device according to claim 7, which is characterized in that the discharging of the diversion chamber
Pipeline is equipped with pressure gauge and back-pressure valve, and the pressure gauge passes through control module and the back-pressure valve in one and is electrically connected.
10. a kind of application method of proppant long-term flow conductivity test device, which is characterized in that the long-term water conservancy diversion of proppant
The application method of aptitude tests device is as follows:
Diversion chamber is superimposed up and down and is placed on the hydraulic platform of hydraulic device, and is clamped up and down, to photoelectric displacement sensor into
Row zero calibration, then vacuumizes diversion cavity and proppant to be detected is added；Temperature in temp controlled thermal insulation case is set,
Different diversion cavities are arranged with different experimental temperatures by heating rod, when water conservancy diversion cavity temperature reaches set temperature, starts liquid
Pressure device pressurizes to diversion chamber, and injection experiments liquid or experimental gas into multiple diversion cavities respectively, and record is poor in real time
The data of pressure meter, photoelectric displacement sensor and liquid meter and gasometer, according to difference gauge, photoelectric displacement sensor
And the data of liquid meter and gasometer calculate the flow conductivity of proppant.
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