CN206583769U - Shale permeability test device based on fluid pressure pulse under a kind of ul-trasonic irradiation - Google Patents
Shale permeability test device based on fluid pressure pulse under a kind of ul-trasonic irradiation Download PDFInfo
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- CN206583769U CN206583769U CN201720166868.8U CN201720166868U CN206583769U CN 206583769 U CN206583769 U CN 206583769U CN 201720166868 U CN201720166868 U CN 201720166868U CN 206583769 U CN206583769 U CN 206583769U
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Abstract
The utility model discloses the shale permeability test device based on fluid pressure pulse under a kind of ul-trasonic irradiation, it includes constant pressure and flow pump（1）, vavuum pump（2）, core holding unit（11）, upstream standard room（6）With downstream standard chamber（15）, described upstream standard room（6）With core holding unit（11）Liquid feeding end connection, downstream standard chamber（15）With core holding unit（11）Outlet end connection, upstream standard room（6）With downstream standard chamber（15）On be respectively connected with pressure sensor（17）.The beneficial effects of the utility model are：Realize that the quick shale permeability that determines is tested under ul-trasonic irradiation, simulate the different lower shale permeability variation processes of ultrasonic powers effect；The difference for the impulse attenuation curve that observation normal saline solution passes through rock core to be measured, realizes evaluation of the ultrasonic wave to shale seepage characteristic influence degree.
Description
Technical field
The utility model is related to base under fine and close oil and gas reservoir physical measurement and evaluation field, particularly a kind of ul-trasonic irradiation
In the shale permeability test device of fluid pressure pulse.
Background technology
Eighties of last century 50, the sixties, the U.S. and the former Soviet Union take the lead in having carried out is oozed using ultrasonic technology raising oil and gas reservoir
The research of saturating rate, and demonstrate ultrasonic wave and can promote oil and gas flow.Hereafter, some scholars successively make to ultrasonic wave both at home and abroad
Porous Media behavior under has carried out careful research, finds oozing for the porous media such as sandstone and coal petrography under ul-trasonic irradiation
Saturating rate has more obvious improvement.In recent years, as the exploitation of U.S.'s shale gas achieves immense success, shale gas is this very
Rule petroleum resources has been a great concern in the world.Shale reservoir is extremely low due to its permeability, leads in recovery process
Often need to carry out large-scale hydraulic fracturing to improve the recovery ratio of shale gas.Hydraulic fracturing technology is successfully improving shale gas production
Also some risks, such as environmental pollution and energy expenditure are brought while amount.Ultrasonic wave is as a kind of low-energy-consumption, without dirt
China natural resources, if can be successfully applied in the fine and close oil-gas reservoir exploitation such as shale gas, will be developed significant by the technology of dye.
Shale reservoir Compacted rock, shale matrix is based on nanoscale hole, and its permeability is typically smaller than 0.01mD.Mesh
Before, laboratory carries out the method for shale permeability determination still based on conventional stationarity displacement process under ul-trasonic irradiation, this
The pressure difference that method needs is very big, time-consuming extremely long, and tests the risk that rock sample has damage.By comparison, using pressure pulse
The pressure difference that method is not required nothing more than to shale progress permeability test is small, and the testing time is short, is more suitable for carrying out the densifications such as shale
The permeability test of rock, but even not on testing the infiltration of the shale under ul-trasonic irradiation using fluid pressure pulse
The experimental provision of rate.
Utility model content
The utility model, which solves existing pressure pulse experimental provision, can not carry out the infiltration of shale core under ul-trasonic irradiation
There is provided the shale permeability test device based on fluid pressure pulse under a kind of ul-trasonic irradiation for rate test.
The purpose of this utility model is achieved through the following technical solutions：Fluid pressure arteries and veins is based under a kind of ul-trasonic irradiation
The shale permeability test device of punching, it includes constant pressure and flow pump, vavuum pump, core holding unit, upstream standard room and lower vernier
Quasi- room, described upstream standard room is connected with the liquid feeding end of core holding unit, the outlet end of downstream standard chamber and core holding unit
Connection, node and downstream standard chamber and the section of core holding unit outlet end between upstream standard room and core holding unit liquid feeding end
It is connected between point on balance control valve, upstream standard room and downstream standard chamber and is respectively connected with pressure sensor, downstream standard chamber
On be also associated with tapping valve；The water sucking mouth of described constant pressure and flow pump to be sequentially connected between upstream standard room intermediate receptacle and
Core holding unit inlet control valve, intermediate receptacle is connected with tapping valve, the discharge outlet of constant pressure and flow pump to upstream standard room it
Between be sequentially connected with constant pressure constant flow pump control valve, upstream standard room inlet control valve；Described vavuum pump and upstream standard room
Vacuum pump control valve is connected between inlet control valve；It also includes supersonic generator, ultrasonic transducer and confined pressure pump,
Ultrasonic transducer is arranged in the liquid feeding end of core holding unit and is connected with supersonic generator, described confined pressure pump and rock core
Clamper is connected.
Described intermediate receptacle, upstream standard room, core holding unit and downstream standard chamber constitutes a closed-loop path.
The precision of described pressure sensor is one thousandth.
The frequency of the ultrasonic transducer is 20~100kHZ, and power is 30~250W, and ultrasonic transducer has six
Shelves power output.
The utility model has advantages below：(1) the utility model realizes shale seepage characteristic under ul-trasonic irradiation and commented
Valency, laboratory apparatus is easy to operate, and pressure difference needed for experiment is small, the testing time is short.(2) test job liquid reusable edible, contributes to
Influence of the ultrasonic wave to shale reservoir seepage characteristic is studied, with certain promotion prospect.(3) the utility model realizes ultrasound
The lower quick shale permeability that determines of ripple effect is tested, and simulates the different lower shale permeability variation processes of ultrasonic power effect；
The difference for the impulse attenuation curve that observation normal saline solution passes through rock core to be measured, calculates rock core liquid using fluid pressure impulse model and surveys
Permeability, realizes evaluation of the ultrasonic wave to shale seepage characteristic influence degree.(4) the utility model helps to improve ultrasonic wave
Research to shale seepage characteristic Influencing Mechanism.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model
Fig. 2 is relation curves of the testing rock core two ends pressure differential deltap p before and after ul-trasonic irradiation with time t；
In figure, 1- constant pressure and flow pumps, 2- vavuum pumps, 3- constant pressure and flow pump control valves, 4- vacuum pump control valves, the upper verniers of 5-
Quasi- room inlet control valve, 6- upstream standards room, 7- testing rock cores, 8- intermediate receptacles, 9- core holding unit inlet control valves,
10- ultrasonic transducers, 11- core holding units, 12- balance control valves, 13- supersonic generators, 14- confined pressure pumps, 15- downstreams
Standard chamber, 16- tapping valves, 17- pressure sensors.
Embodiment
The utility model is further described below in conjunction with the accompanying drawings, protection domain of the present utility model be not limited to
It is lower described：
As shown in figure 1, the shale permeability test device based on fluid pressure pulse under a kind of ul-trasonic irradiation, it includes
Constant pressure and flow pump 1, vavuum pump 2, core holding unit 11, upstream standard room 6 and downstream standard chamber 15, described upstream standard room 6
Connected with the liquid feeding end of core holding unit 11, downstream standard chamber 15 is connected with the outlet end of core holding unit 11, upstream standard room 6
Node and downstream standard chamber 15 between the liquid feeding end of core holding unit 11 and connect between the node of the outlet end of core holding unit 11
It is connected on balance control valve 12, upstream standard room 6 and downstream standard chamber 15 and is respectively connected with pressure sensor 17, pressure sensor 17
Precision be one thousandth, be also associated with tapping valve 16 in downstream standard chamber 15；The water sucking mouth of described constant pressure and flow pump 1 is to upper
Intermediate receptacle 8 and core holding unit inlet control valve 9, intermediate receptacle 8 and tapping valve 16 have been sequentially connected between trip standard chamber 6
Connection, the discharge outlet of constant pressure and flow pump 1 is to being sequentially connected with constant pressure constant flow pump control valve 3, upstream standard between upstream standard room 6
Room inlet control valve 5；Vacuum pump control valve is connected between described vavuum pump 2 and upstream standard room inlet control valve 5
4；It also includes supersonic generator 13, ultrasonic transducer 10 and confined pressure pump 14, the frequency of ultrasonic transducer 10 for 20~
100kHZ, power is 30~250W, and ultrasonic transducer 10 has six grades of power outputs, and ultrasonic transducer 10 is arranged at rock core
It is connected in the liquid feeding end of clamper 11 and with supersonic generator 13, described confined pressure pump 14 is connected with core holding unit 11.
Described intermediate receptacle 8, upstream standard room 6, core holding unit 11 and downstream standard chamber 15 constitutes one and closed back
Road.
As shown in figure 1, when the constant pressure and flow pump control valve 3, balance control valve 12 and tapping valve 16 are closed, vavuum pump
2 pairs of upstream standard rooms 6, core holding unit 11 and downstream standard chamber 15 are vacuumized；When the vacuum pump control valve 4 and balance are controlled
When valve 12 is closed, the fluid in intermediate receptacle 8 is pumped into upstream standard room 6, core holding unit 11 and downstream by constant pressure and flow pump 1
Standard chamber 15, and intermediate receptacle 8 is returned to by tapping valve 16, and then complete in the case where having ultrasonic wave and no ul-trasonic irradiation
Shale permeability is tested.
Method of the described device based on fluid pressure pulse test shale permeability under ul-trasonic irradiation, it include with
Lower step：
S1, testing rock core 7 is taken, 8h, a diameter of 25.0 ± 0.2mm of testing rock core 7, length L are dried at 57~60 DEG C
For 50.0 ± 0.2mm；
S2, testing rock core 7 loaded in core holding unit 11, close core holding unit inlet control valve 9, and be passed through mark
The moisture capacity C of quasi- salt solution demarcation upstream standard room 61, normal saline solution is 3%KCl solution；
S3, upstream standard room inlet control valve 5 is opened, close constant pressure and flow pump control valve 3, balance control valve 12, true
Empty pump control valve 4 and tapping valve 16, are applied 8~10MPa confined pressure to testing rock core 7 by confined pressure pump 14, then turn on vacuum
Pump control valve 4 simultaneously starts vavuum pump 2, and testing rock core 7, upstream standard room 6 and downstream standard chamber 15 are taken out very by vavuum pump 2
Sky, the pumpdown time is 12h；
S4, closing vacuum pump control valve 4, open constant pressure and flow pump control valve 3, upstream standard room inlet control valve 5, rock
Heart clamp holder inlet control valve 9 and tapping valve 16, start constant pressure and flow pump 1, by constant pressure and flow pump 1 by intermediate receptacle 8
Normal saline solution be pumped into through constant pressure and flow pump control valve 3 in upstream standard room 6, under hydraulic pressure normal saline solution sequentially enter test rock
In the heart 7 and downstream standard chamber 15, make the abundant saturated brine 24h of testing rock core 7；
S5, opening balance control valve 12, upstream standard room 6 and downstream standard chamber 15 are interconnected, it is ensured that upstream standard room 6
It is identical with the pressure of downstream standard chamber 15；
S6, closing balance control valve 12, regulation constant pressure and flow pump 1 is with vernier on being on step S5 balance pressure-based
Quasi- room 6 increases the pulse of one 5~10% balance pressure value, and normal saline solution is flowed by testing rock core 7 under differential pressure action
Enter downstream standard chamber 15, upstream standard room inlet control valve 5 is closed, by being connected to upstream standard room 6 and downstream standard chamber
15 pressure sensor 17 detects that upstream standard room 6 and the internal standard brine pressure of downstream standard chamber 15 change with time respectively,
And the pressure differential deltap p of upstream standard room 6 and downstream standard chamber 15 is calculated with time t change every 10s；
S7, basis are calculated as follows the testing rock core benchmark permeability k before ultrasonication1：
Wherein：μ is normal saline solution viscosity, mPas；L is testing rock core length, mm；A is testing rock core cross-sectional area,
mm2；C1For the moisture capacity of upstream standard room, cm3/MPa；T is testing time, s；Δ p (0) be initial time upstream standard room and
The pressure difference of downstream standard chamber, MPa；Δ p (t) is the pressure difference of t upstream standard room and downstream standard chamber, MPa；
The wherein moisture capacity C of upstream standard room1Calculation formula be：
Wherein V1Hold water volume, cm for upstream standard room3；p1For the pressure of upstream standard room, MPa；
S8, on supersonic generator 13 set a ultrasonic wave measured power and frequency, repeat step S5~S6, enter
The permeability k for the testing rock core that rock liquid under row ul-trasonic irradiation is surveyed under permeability test, ul-trasonic irradiation2Calculation formula
For：
Wherein：Δ p (0) is the initial time upstream standard room under ul-trasonic irradiation and the pressure difference of downstream standard chamber, MPa；
Δ p (t) is the pressure difference of t upstream standard room and downstream standard chamber under ul-trasonic irradiation, MPa；
S9, as shown in Fig. 2 producing testing rock core 7 upstream standard room 6 and downstream standard chamber 15 before and after ul-trasonic irradiation
Pressure differential deltap p and time t relation curve.
Therefore realize the quick shale permeability that determines under ul-trasonic irradiation by the present apparatus and method of testing to test, simulation
The different lower shale permeability variation processes of ultrasonic powers effect；Observe normal saline solution bent by the impulse attenuation of rock core to be measured
The difference of line, calculates rock core liquid using fluid pressure impulse model and surveys permeability, realize ultrasonic wave to shale seepage characteristic shadow
The evaluation of the degree of sound.
Diameter testing rock core is used in step sl for diameter 25mm, and length L is 50mm rock sample, rock sample length L and horizontal stroke
Sectional area A is respectively 49.6mm and 482.8mm2；The moisture capacity C of upstream standard room 6 is used in step s 21For 0.018cm3/
Mpa；In step s 6, constant pressure and flow pump 1 is adjusted to increase by one on step S5 balance pressure-based for upstream standard room 6
800KPa pulse, rock sample permeability is k before and after calculating ul-trasonic irradiation respectively according to formula (1) and (2)1=
0.00521mD, k2=0.00566mD.
To the utility model it should be appreciated that embodiment described above, to the purpose of this utility model, technical scheme
Further details of explanation has been carried out with beneficial effect, embodiment of the present utility model is these are only, has been not used to limit
The utility model, every within the spiritual principles of utility model, made any modification, equivalent substitution and improvements etc. all should
In protection domain of the present utility model, the protection model that protection domain of the present utility model should be defined with claim
Enclose and be defined.
Claims (4)
1. the shale permeability test device based on fluid pressure pulse under a kind of ul-trasonic irradiation, it is characterised in that：It includes
Constant pressure and flow pump（1）, vavuum pump（2）, core holding unit（11）, upstream standard room（6）With downstream standard chamber（15）, described is upper
Swim standard chamber（6）With core holding unit（11）Liquid feeding end connection, downstream standard chamber（15）With core holding unit（11）Go out liquid
End connection, upstream standard room（6）With core holding unit（11）Node and downstream standard chamber between liquid feeding end（15）Pressed from both sides with rock core
Holder（11）Balance control valve is connected between the node of outlet end（12）, upstream standard room（6）With downstream standard chamber（15）On
It is respectively connected with pressure sensor（17）, downstream standard chamber（15）On be also associated with tapping valve（16）；Described constant pressure and flow pump（1）
Water sucking mouth to upstream standard room（6）Between be sequentially connected with intermediate receptacle（8）With core holding unit inlet control valve（9）,
Intermediate receptacle（8）With tapping valve（16）Connection, constant pressure and flow pump（1）Discharge outlet to upstream standard room（6）Between be sequentially connected with
There is constant pressure constant flow pump control valve（3）, upstream standard room inlet control valve（5）；Described vavuum pump（2）Enter with upstream standard room
Liquid mouthful control valve（5）Between be connected with vacuum pump control valve（4）；It also includes supersonic generator（13）, ultrasonic transducer
（10）With confined pressure pump（14）, ultrasonic transducer（10）It is arranged at core holding unit（11）Liquid feeding end in and with ultrasonic wave occur
Device（13）Connection, described confined pressure pump（14）With core holding unit（11）Connection.
2. the shale permeability test dress based on fluid pressure pulse under a kind of ul-trasonic irradiation according to claim 1
Put, it is characterised in that：Described intermediate receptacle（8）, upstream standard room（6）, core holding unit（11）With downstream standard chamber（15）
Constitute a closed-loop path.
3. the shale permeability test dress based on fluid pressure pulse under a kind of ul-trasonic irradiation according to claim 1
Put, it is characterised in that：Described pressure sensor（17）Precision be one thousandth.
4. the shale permeability test dress based on fluid pressure pulse under a kind of ul-trasonic irradiation according to claim 1
Put, it is characterised in that：The ultrasonic transducer（10）Frequency be 20 ~ 100kHZ, power be 30 ~ 250W, ultrasonic wave transducer
Device（10）With six grades of power outputs.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720166868.8U CN206583769U (en) | 2017-02-23 | 2017-02-23 | Shale permeability test device based on fluid pressure pulse under a kind of ul-trasonic irradiation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720166868.8U CN206583769U (en) | 2017-02-23 | 2017-02-23 | Shale permeability test device based on fluid pressure pulse under a kind of ul-trasonic irradiation |
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| CN206583769U true CN206583769U (en) | 2017-10-24 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106769790A (en) * | 2017-02-23 | 2017-05-31 | 西南石油大学 | Shale permeability test device and method based on fluid pressure pulse under a kind of ul-trasonic irradiation |
| CN109470616A (en) * | 2018-10-31 | 2019-03-15 | 重庆大学 | Rock multifunction seepage test macro |
| CN110107273A (en) * | 2019-06-19 | 2019-08-09 | 中国地质大学（北京） | A kind of shale gas pressure break seepage experimental apparatus |
| CN112147050A (en) * | 2019-06-28 | 2020-12-29 | 中国石油化工股份有限公司 | Method and device for measuring permeability of oil and gas reservoir rock dynamic liquid |
| CN113825996A (en) * | 2019-05-17 | 2021-12-21 | 沙特阿拉伯石油公司 | Method and system for determining core permeability in pulse attenuation experiments |
-
2017
- 2017-02-23 CN CN201720166868.8U patent/CN206583769U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106769790A (en) * | 2017-02-23 | 2017-05-31 | 西南石油大学 | Shale permeability test device and method based on fluid pressure pulse under a kind of ul-trasonic irradiation |
| CN106769790B (en) * | 2017-02-23 | 2023-10-31 | 西南石油大学 | Shale permeability testing device and method based on liquid pressure pulse under ultrasonic action |
| CN109470616A (en) * | 2018-10-31 | 2019-03-15 | 重庆大学 | Rock multifunction seepage test macro |
| CN109470616B (en) * | 2018-10-31 | 2021-11-23 | 重庆大学 | Multifunctional seepage testing system for rock |
| CN113825996A (en) * | 2019-05-17 | 2021-12-21 | 沙特阿拉伯石油公司 | Method and system for determining core permeability in pulse attenuation experiments |
| CN110107273A (en) * | 2019-06-19 | 2019-08-09 | 中国地质大学（北京） | A kind of shale gas pressure break seepage experimental apparatus |
| CN112147050A (en) * | 2019-06-28 | 2020-12-29 | 中国石油化工股份有限公司 | Method and device for measuring permeability of oil and gas reservoir rock dynamic liquid |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171024 Termination date: 20190223 |