CN206617160U - It is a kind of to bleed off pressure the lower experimental provision for determining recovery ratio of production for simulation water horizontal well - Google Patents
It is a kind of to bleed off pressure the lower experimental provision for determining recovery ratio of production for simulation water horizontal well Download PDFInfo
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- CN206617160U CN206617160U CN201720187328.8U CN201720187328U CN206617160U CN 206617160 U CN206617160 U CN 206617160U CN 201720187328 U CN201720187328 U CN 201720187328U CN 206617160 U CN206617160 U CN 206617160U
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Abstract
The utility model discloses a kind of experimental provision that the lower measure recovery ratio of production is bled off pressure for simulation water horizontal well, including gas injection device, clamper, rock core, moisture trap, gas reservoir, liquid memory and computer, the gas injection device is connected by gas injecting pipe with the clamper, the rock core is arranged in the clamper, one end of the moisture trap is connected with the clamper, the other end is connected with the gas reservoir and liquid memory respectively, experiment metering is carried out by the micro- metering device being arranged on the gas reservoir and liquid memory respectively, be provided with the clamper pressure sensor be used for and the computer connection progress data acquisition.The present apparatus is applied to simulation gas well and bleeds off pressure production process, and can determine simulation well recovery.Gas well both can be straight well or horizontal well, have wide range of applications.
Description
Technical field
The utility model belongs to simulation experiment device technical field, and in particular to a kind of simulation water horizontal well bleeds off pressure the lower survey of production
The novel experiment device of its fixed recovery ratio, puts especially with large scale rock core in the case where maintaining certain strata pressure to horizontal well
Pressure production process is simulated and determines its recovery ratio.
Background technology
Tradition determines the device of oil-water displacement efficiency in sandstone, this generally using the planar fluid injection of the small rock core formula of cylindrical type
Device is generally made up of priming device, rock core and the part of liquid collector three.This small coring device, which can not be simulated, to be truly laminated
Power, can not simulate and bleed off pressure production process under true stratum energy, the recovery ratio determined is also under-represented.In addition, small
Rock core is also not suitable for drilling through horizontal wellbore.
Therefore, design a kind of gas well that can simulate and bleed off pressure the novel experiment device that production process and its recovery ratio are measured, it is right
Production exploitation of rationally building in gas field has profound significance.
Utility model content
Technical problem to be solved in the utility model is for above-mentioned of the prior art not enough new there is provided one kind
Type experimental provision, the core holding unit of the device be screwed can simulated formation confined pressure, well head pressure is then by back pressure control
Device is controlled.
The utility model uses following technical scheme：
It is a kind of to bleed off pressure the lower experimental provision for determining recovery ratio of production for simulation water horizontal well, including gas injection device, clamper,
Rock core, moisture trap, gas reservoir, liquid memory and computer, the gas injection device by gas injecting pipe with it is described
Clamper is connected, and the rock core is arranged in the clamper, and one end of the moisture trap is connected with the clamper, separately
One end is connected with the gas reservoir and liquid memory respectively, is deposited respectively by being arranged on the gas reservoir and liquid
Micro- metering device on reservoir, which be provided with experiment metering, the clamper pressure sensor, to be used for and computer company
Tap into row data acquisition.
Further, the rock core is to be provided with note to adopt the rectangular parallelepiped structure in hole, and the note, which is adopted, to be provided with note and adopt pipe in hole, institute
State note adopt pipe two ends pass through plastic cement sealing gasket carry out encapsulation process.
Further, adopt pipe direction along the note in the rock core and be provided with pressure tap, the pressure tap is arranged on described
The center of rock core, by the 4th pressure sensor P4It is connected with the computer, is provided with and is calculated with described on the clamper
3rd pressure sensor P of machine connection3。
Further, the gas injecting pipe is adopted pipe with the note by first switch valve and is connected, on the gas injecting pipe
It is provided with first pressure sensor P1, for being connected with the computer, measure gas injection end pressure.
Further, the moisture trap and the note are provided with second switch valve between adopting pipe, and described second opens
Closing valve and the note are provided with second pressure sensor P between adopting pipe2, the second pressure sensor P2With the computer
Connection, for measuring outlet end pressure.
Further, the note adopts hole and the note is adopted and is provided with paraffin between pipe and is used to seal, the rock core with it is described
Resistance to compression resin is provided between clamper to be used to fix.
Further, the clamper is circular configuration, is fixed by screw and constituted by two drums of clamper half.
Further, the gas injection device includes intermediate receptacle and experimental gas, and the intermediate receptacle is connected with air pump, institute
Intermediate receptacle and the experimental gas is stated to be connected with the gas injecting pipe respectively.
Further, between the air pump and the intermediate receptacle, between the intermediate receptacle and the gas injecting pipe, with
And it is respectively arranged with controlled valve between the experimental gas and the gas injecting pipe.
Further, the gas reservoir and liquid memory are connected by controlled valve with micro- metering device respectively
Connect.
Compared with prior art, the utility model at least has the advantages that：
The utility model simulation water horizontal well bleeds off pressure the lower experimental provision for determining recovery ratio of production, can be with using large scale rock core
Simulation drills through horizontal well, and can preferably maintain stratum energy to bleed off pressure production with abundant simulation relative to traditional small rock core,
Rock core is put into clamper, clamper one end connection gas injection device is used to supply, and the other end connects moisture trap by gas
Stored respectively with liquid and pressure sensor is set on progress recovery ratio simulated experiment, clamper and is connected with computer, can simulated
Stratum confined pressure, quickly simulation can bleed off pressure production process and determine the experiment recovery ratio of different core samples, by the harvesting measured
Rate statistical disposition, just can as gas field gas well actual production recovery ratio predicted value.
Further, inlet end and outlet side are provided with the pressure sensor that is connected with computer respectively, by computer
The air pressure in pipeline is obtained in real time, is easy to experimental implementation, on the one hand, obtain accurate injected gas volume from gas injection end；On the other hand,
Accurate produced gas volume is obtained from outlet side, so that experiment rock just can be calculated using the equation of gas state and matter balance equation
The recovery ratio of heart sample.
Further, clamper is circular configuration, is fixed by screw and constituted by two drums of clamper half, device operation
Simply, it is easy to routine use and maintenance.
Further, core sample is put into new core holding unit, then with resistance to compression resin fill rock core and clamper
Between gap up and down, to fix rock core upper and lower end face, rock core note adopt port and note adopt pipe between sealed by paraffin,
So that rock core keeps the state of a closing in itself, to prevent pressure release of losing heart, be conducive to measuring.
In summary, the present apparatus bleeds off pressure production process suitable for simulation gas well, and can determine simulation well recovery.Gas well was both
But straight well or horizontal well, have wide range of applications.
Below by drawings and examples, the technical solution of the utility model is described in further detail.
Brief description of the drawings
Fig. 1 is the utility model system diagram；
Fig. 2 is the structural representation of the drum of the utility model clamper half；
Fig. 3 is that the utility model note adopts pipe device schematic diagram.
Wherein：1. air pump；2. intermediate receptacle；3. experimental gas；4. rock core；5. moisture trap；6. gas reservoir；7.
Liquid memory；8. micro- metering device；9. computer；10. the drum of clamper half；11. screw；12. pressure tap；13. note adopts pipe；
14. plastic cement sealing gasket.
Embodiment
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
Concrete meaning of the language in the utility model.
The utility model is a kind of to bleed off pressure the lower experimental provision for determining recovery ratio of production for simulation water horizontal well, by saturation
The big rock core of cuboid of water carries out gas injection, after the energy equal with true stratum is obtained after rock core, and perforate carries out bleeding off pressure production, profit
The real-time pressure experiment with computing at gas, liquid volume and the clamper two ends measured with the high-precision measuring device of device tail end
The recovery ratio of institute's simulation water horizontal well.
Referring to Fig. 1, the utility model is a kind of to bleed off pressure the lower experimental provision for determining recovery ratio of production for simulation water horizontal well,
Including gas injection device, rock core 4, clamper, moisture trap 5, gas reservoir 6, liquid memory 7, micro- metering device 8 and meter
Calculation machine 9, the rock core 4 is arranged in the clamper, and the gas injection device is connected by gas injecting pipe with the clamper, institute
State and pressure sensor is provided with clamper, the pressure sensor is used for and the computer 9 connection carries out data acquisition, institute
The process moisture trap 5 for stating clamper is connected with gas reservoir 6 and liquid memory 7 respectively, micro- metering dress
Put 8 and be connected to metering with the gas reservoir 6 and liquid memory 7 respectively.
Note is provided with the rock core 4 and adopts hole, the note, which is adopted, to be provided with note and adopt pipe 13 in hole, described note is adopted the two ends of pipe 13 and led to
Cross plastic cement sealing gasket 14 and carry out encapsulation process, rock core note adopt nose end mouthful and note adopt pipe 13 between sealed by paraffin so that
Rock core keeps the state of a closing in itself, as shown in figure 3, adopting pipe 13 along the note in the rock core 4 is provided with a pressure measurement
Hole 12, the pressure tap 12 is located at the center of the rock core 4, by the 4th pressure sensor P4It is connected with the computer 9, its
Purpose is the determination gas injection end time, specifically, if original formation pressure is 30Mpa, then gas injection should be to sensor P4Pressure
Force value can terminate up to 30Mpa side, and production is bled off pressure under true strata pressure energy to simulate；It is provided with the clamper and institute
State the 3rd pressure sensor P of the connection of computer 93, the sensor P3Effect be detect stratum confined pressure, its pressure measurement position
Between rock core and clamper, specifically, between rock core face and resistance to compression interlaminar resin；Two pressure sensors are same mesh
, i.e., production more truly under simulated formation state.
The gas injection device is adopted pipe 13 with the note in the clamper by gas injecting pipe and is connected, it is described note adopt pipe 13 with
The junction of the gas injecting pipe is provided with first switch valve K1, the gas injecting pipe and is provided with first pressure sensor
P1, for being connected with the computer 9, gas injection end pressure is measured, the note adopts pipe 13 also by second switch valve K2 and institute
State moisture trap 5 to connect, the second switch valve K2 and the note are provided with second pressure sensor P between adopting pipe 132,
The second pressure sensor P2It is connected with the computer 9, for measuring outlet end pressure.
Note is adopted pipe 13 and is connected with valve K2, otherwise during gas injection, gas can be injected into separator, so need to first be closed during gas injection
Valve closing door K2, then open K1；In turn, valve K1 is then first closed during production, K2 is opened；Its purpose is to maintain rock core and folder
Hold the closure of device
The clamper is circular configuration, is made up of two drums 10 of clamper half fastening of screw 11, the rock core 4
For rectangular parallelepiped structure, it is horizontally set in the clamper, the vacant locations in the clamper are fixed with resistance to compression resin.Pass through
The rock core 4 is closed progress stratum confined pressure simulation by the drum 10 of clamper half.
The gas injection device includes intermediate receptacle 2 and experimental gas 3, and the intermediate receptacle 2 is connected with air pump 1, it is described in
Between container 2 and the experimental gas 3 be connected respectively with the gas injecting pipe.
Wherein, between the air pump 1 and the intermediate receptacle 2, between the intermediate receptacle 2 and the gas injecting pipe, with
And it is respectively arranged with controlled valve between the experimental gas 3 and the gas injecting pipe.
Gas reservoir 6 and liquid memory 7 are connected by controlled valve with micro- metering device 8 respectively.
It is specific to install as follows：
First, cuboid rock core 4 (rock core is water saturation rock core, and accurately calculates rock core institute water content) is produced, grow,
Wide, high is respectively L, K, H.In experimental provision, air pump 1 is connected with intermediate receptacle 2, and centre is connected to controlled valve, experimental gas 3
It is connected by controlled valve with gas injecting pipe, first connects first pressure sensor P1It is connected, is obtained with testing with core holding unit again
Obtain gas injection end pressure；Rock core 4 uses the big rock core of cuboid, and cuboid rock core 4 is put into circular holder, and vacant locations are used anti-
Pressurizing resin is fixed, and the space of gas injection end rock core and sealer is then closed by paraffin, and outlet side connects second pressure sensor first
P2, to obtain real-time pressure；The fluid (gas and water) of outlet side outflow respectively enters gas reservoir by gas and water separator 5
6 and liquid memory 7, measure the gas volume amount and volume of fluid of outflow respectively by micro- metering device 8, utilize clamping
Pressure differential before and after device, calculates the recovery ratio of experimental simulation horizontal well.
Experiment core sample selection stratification change used is obvious, the core sample that lamina is thinner.Experiment rock core shape used
For cuboid, injection direction as shown in Fig. 2 for from right to left, i.e. long side direction, its one side is drilled with a note and adopts hole.
Embodiment：
Choose sandstone to core one piece of sample, be prepared into the fracture test sample that length is 30cm × 30cm × 10cm.
Device installation steps are as follows：
First the core sample prepared is put into core holding unit, then with compression-resistant material (such as resin) sand pack with
Gap up and down between clamper, to fix rock core upper and lower end face, finally progressively symmetrically screws two clamper semicircles
The screw of bucket is fixed (preventing from damaging core sample) by two sides of rock core, notes screwing on screw being forced into really
Layer confined pressure.
Experimental procedure is as follows：
First, scrubbing operations are first carried out, and washed rock core is processed into saturated-water phase；
Second, under simulated formation temperature conditionss, gas injection is carried out with the stratum energy of simulation needed for obtaining to above-mentioned big rock core
Amount；
3rd, close second switch valve K2, open first switch valve K1 (attention with sealer close gas injecting pipe with
Outer rock core region, simulates well point injection-production method), constant speed is treated to be substantially identical to true gas reservoir institute inside rock core to rock core gas injection
(pressure sensor P during corresponding original formation pressure4Pressure value reaches 30Mpa or so), air pump stops gas injection and closing first
Controlled valve K1, record gas injection rate QiAnd gas injection side pressure force snesor real-time pressure value P1；
Finally, under simulated formation temperature conditionss, second switch valve K2 (first switch valve K1 is remained turned-off) is opened,
Dummy level well point bleeds off pressure production until exhaustion, terminates experiment when rock core internal pressure is down to 2Mpa or so, in rock sample outlet
End reads accumulative water yield Q using micro- metering devicewAnd accumulative gas output Qg。
Final experiment recovery ratio Re can be tried to achieve by following simplified style：
Wherein, QiFor gas injection rate, P1For gas injection side pressure force snesor real-time pressure value, P2It is real for outlet side pressure sensor
When pressure value, QgTo add up gas output.
This experimental provision utilizes material balance principle, that is, injects gas total amount in produced gas total amount under uniform pressure and rock core
The summation of remained gas.Because core holding unit and sealer are more easy to operate, accordingly, it is capable to which quick simulation bleeds off pressure production process and surveyed
Experiment recovery ratio in fixed different core samples.
In this novel experiment device, big rock core can preferably maintain stratum energy to bleed off pressure production process with abundant simulation；Folder
Holder device energy simulated formation confined pressure；By being obtained toward the gas injection of saturation water rock core after approximate real stratum energy, perforate is carried out
Bleeding off pressure efficiency test, it tests recovery ratio, and the recovery ratio just can bleed off pressure the ginseng of its lower recovery ratio of production as gas well in actual production
Examine value.Because the experimental provision being capable of truly simulated formation, therefore the recovery ratio determined has good representative and reference
Meaning.
Above content is only explanation technological thought of the present utility model, it is impossible to limit protection model of the present utility model with this
Enclose, it is every according to the utility model proposes technological thought, any change done on the basis of technical scheme each falls within this reality
Within protection domain with new claims.
Claims (10)
1. a kind of bleed off pressure the lower experimental provision for determining recovery ratio of production for simulation water horizontal well, it is characterised in that：Including gas injection dress
Put, clamper, rock core (4), moisture trap (5), gas reservoir (6), liquid memory (7) and computer (9), the note
Device of air is connected by gas injecting pipe with the clamper, and the rock core (4) is arranged in the clamper, the gas-water separation
One end of device (5) is connected with the clamper, and the other end is connected with the gas reservoir (6) and liquid memory (7) respectively,
Experiment metering is carried out by the micro- metering device (8) being arranged on the gas reservoir (6) and liquid memory (7) respectively,
Be provided with the clamper pressure sensor be used for and the computer (9) connection progress data acquisition.
2. a kind of experimental provision that the lower measure recovery ratio of production is bled off pressure for simulation water horizontal well according to claim 1, its
It is characterised by：The rock core (4) is to be provided with note to adopt the rectangular parallelepiped structure in hole, and the note, which is adopted, to be provided with note and adopt pipe (13), institute in hole
State note adopt pipe (13) two ends pass through plastic cement sealing gasket (14) carry out encapsulation process.
3. a kind of experimental provision that the lower measure recovery ratio of production is bled off pressure for simulation water horizontal well according to claim 2, its
It is characterised by：Pipe (13) direction being adopted along the note in the rock core (4) and being provided with pressure tap (12), the pressure tap (12) is set
Center in the rock core (4), by the 4th pressure sensor (P4) be connected with the computer (9), set on the clamper
It is equipped with the 3rd pressure sensor (P being connected with the computer (9)3)。
4. a kind of experimental provision that the lower measure recovery ratio of production is bled off pressure for simulation water horizontal well according to claim 2, its
It is characterised by：The gas injecting pipe is adopted pipe (13) with the note by first switch valve (K1) and is connected, on the gas injecting pipe
It is provided with first pressure sensor (P1), for being connected with the computer (9), measure gas injection end pressure.
5. a kind of experimental provision that the lower measure recovery ratio of production is bled off pressure for simulation water horizontal well according to claim 2, its
It is characterised by, the moisture trap (5) and the note are adopted and be provided with second switch valve (K2), described second between pipe (13)
Controlled valve (K2) and the note are provided with second pressure sensor (P between adopting pipe (13)2), the second pressure sensor
(P2) be connected with the computer (9), for measuring outlet end pressure.
6. a kind of experimental provision that the lower measure recovery ratio of production is bled off pressure for simulation water horizontal well according to claim 2, its
It is characterised by：The note adopts hole and the note is adopted and is provided with paraffin between pipe (13) and is used to seal, the rock core (4) and the folder
Resistance to compression resin is provided between holder to be used to fix.
7. a kind of experimental provision that the lower measure recovery ratio of production is bled off pressure for simulation water horizontal well according to claim 1, its
It is characterised by：The clamper is circular configuration, is made up of two drums of clamper half (10) screw (11) fastening.
8. a kind of experimental provision that the lower measure recovery ratio of production is bled off pressure for simulation water horizontal well according to claim 1, its
It is characterised by：The gas injection device includes intermediate receptacle (2) and experimental gas (3), and the intermediate receptacle (2) is connected with air pump
(1), the intermediate receptacle (2) and the experimental gas (3) are connected with the gas injecting pipe respectively.
9. a kind of experimental provision that the lower measure recovery ratio of production is bled off pressure for simulation water horizontal well according to claim 8, its
It is characterised by：Between the air pump (1) and the intermediate receptacle (2), between the intermediate receptacle (2) and the gas injecting pipe,
And it is respectively arranged with controlled valve between the experimental gas (3) and the gas injecting pipe.
10. a kind of experimental provision that the lower measure recovery ratio of production is bled off pressure for simulation water horizontal well according to claim 1, its
It is characterised by：The gas reservoir (6) and liquid memory (7) pass through controlled valve and micro- metering device (8) respectively
Connection.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720187328.8U CN206617160U (en) | 2017-02-28 | 2017-02-28 | It is a kind of to bleed off pressure the lower experimental provision for determining recovery ratio of production for simulation water horizontal well |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720187328.8U CN206617160U (en) | 2017-02-28 | 2017-02-28 | It is a kind of to bleed off pressure the lower experimental provision for determining recovery ratio of production for simulation water horizontal well |
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| CN206617160U true CN206617160U (en) | 2017-11-07 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109707376A (en) * | 2019-01-09 | 2019-05-03 | 西南石油大学 | A method of big water body swelling water is invaded in simulation oil-gas reservoir failure recovery process |
| CN111594099A (en) * | 2020-05-30 | 2020-08-28 | 河南理工大学 | Device and method for simulating and testing productivity of coal bed gas staged fracturing horizontal well |
-
2017
- 2017-02-28 CN CN201720187328.8U patent/CN206617160U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109707376A (en) * | 2019-01-09 | 2019-05-03 | 西南石油大学 | A method of big water body swelling water is invaded in simulation oil-gas reservoir failure recovery process |
| CN109707376B (en) * | 2019-01-09 | 2020-12-22 | 西南石油大学 | Method for simulating large water body expansion water invasion in oil and gas reservoir failure exploitation process |
| CN111594099A (en) * | 2020-05-30 | 2020-08-28 | 河南理工大学 | Device and method for simulating and testing productivity of coal bed gas staged fracturing horizontal well |
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