CN206487457U - A kind of low-permeability oil deposit multistage fracturing horizontal well pressure field distribution analogue means - Google Patents
A kind of low-permeability oil deposit multistage fracturing horizontal well pressure field distribution analogue means Download PDFInfo
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- CN206487457U CN206487457U CN201720117917.9U CN201720117917U CN206487457U CN 206487457 U CN206487457 U CN 206487457U CN 201720117917 U CN201720117917 U CN 201720117917U CN 206487457 U CN206487457 U CN 206487457U
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- horizontal well
- simulation
- multistage fracturing
- fracturing horizontal
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Abstract
The utility model provides a kind of low-permeability oil deposit multistage fracturing horizontal well pressure field distribution analogue means, is related to oil drilling and extracting equipment field.Its technical scheme：The horizontal segment of dummy level pit shaft is welded with simulation time crack provided with simulation major fracture, simulation major fracture.Copper-bath is provided with lucite groove and there are two mouth molds to intend multistage fracturing horizontal well.The simulation major fracture and simulation time crack for simulating multistage fracturing horizontal well are immersed in copper-bath.Simulation multistage fracturing horizontal well is connected to the low-pressure end and high-pressure side of constant-voltage DC source by wire.Voltmeter wire is connected with constant-voltage DC source and the probe.The utility model is by simulating the major fracture of multistage fracturing horizontal well and the form in time crack, when characterizing low-permeability oil deposit multistage fracturing horizontal well development, the pressure of diverse location in stratum, so as to provide foundation for the deployment for optimizing multistage fracturing horizontal well.
Description
Technical field
The utility model is related to oil field development experiment field, more particularly to a kind of low-permeability oil deposit multistage fracturing horizontal well pressure
Force distribution analogue means.
Background technology
China's low-permeability oil deposit total resources is enriched, but its reservoir properties is poor, and traditional mining type can not be opened effectively
Send out oil reservoir such.Multistage fracturing horizontal well by improving the seepage flow condition of low-permeability oil deposit near wellbore zone and increasing drainage area,
Oil well output is improved, the development effectiveness of oil reservoir is improved.The pressure break series of multistage fracturing horizontal well is general more than 5 grades, often
One-level pressure break will all form two symmetrical major fractures, will expand time crack again from major fracture.Split from master in secondary crack
Sew on and extend to oil reservoir, the branch as extended from trunk.Major fracture and the complicated fracture network system of time cracking initiation, expand
Big draining scope, but also increase the complexity of flowing.The natural production capacity wretched insufficiency of low-permeability oil deposit, to improve opening for oil reservoir
Send out effect, many technical measures developed using early-stage waterflooding or Advance Water Injection.In the hyposmosis both at home and abroad such as Changqing oilfields
During the actual development in oil field, water filling and oil recovery are often carried out using multistage fracturing horizontal well, imitated with the exploitation for improving oil reservoir
Really.
Due to the complexity of the seam net of multistage fracturing horizontal well formation, existing theoretical study method and method for numerical simulation
Pressure distribution situation when being difficult to analyze multistage fracturing horizontal well development in stratum.And existing experimental provision lacks targetedly
Research, it is therefore desirable to provide a kind of multistage fracturing horizontal well pressure field distribution analogue means, has studied the life of multistage fracturing horizontal well
Pressure distribution during production in stratum.
Utility model content
The purpose of this utility model is to provide a kind of low-permeability oil deposit multistage fracturing horizontal well pressure field distribution simulation dress
Put, by simulating the distribution that the major fracture and secondary fissure of multistage fracturing horizontal well are sewn in oil reservoir, determine the strata pressure in oil reservoir
Distribution situation.
The purpose of this utility model can reach by using following technical scheme：
A kind of low-permeability oil deposit multistage fracturing horizontal well pressure field distribution analogue means described in utility model includes constant pressure
Dc source, simulation multistage fracturing horizontal well, copper-bath, voltmeter, wire, probe, lucite groove.
Simulating multistage fracturing horizontal well includes dummy level pit shaft, simulation major fracture, simulation time crack.In the simulation water
The appropriate location of the horizontal segment of horizontal well cylinder is welded with the simulation major fracture, adjacent simulation major fracture symmetric arrays.Each
On the individual simulation major fracture, the simulation time crack, adjacent simulation time crack symmetric arrays are welded with.The dummy level
Pit shaft is made up of the copper wire of 2.5 millimeters of diameter.The simulation major fracture is made up of the copper wire of 1.5 millimeters of diameter.The simulation time
Crack is made up of the copper wire of 1 millimeter of diameter.
Appropriate copper-bath is provided with the lucite groove, the reservoir to simulate oil reservoir.In the machine
Two mouth molds are provided with glass guide channel and intend multistage fracturing horizontal well.The simulation major fracture of the simulation multistage fracturing horizontal well and simulation
Secondary crack is immersed in copper-bath.Simulation multistage fracturing horizontal well described in a bite is connected to described constant pressure by wire
The low-pressure end of dc source, the simulation multistage fracturing horizontal well described in another mouth is connected to described constant voltage DC electricity by wire
The high-pressure side in source.
The voltmeter connects the low-pressure end and the probe of the constant-voltage DC source by wire.
After the utility model is connected, one end of the probe is immersed in copper-bath, probe institute can be measured
Magnitude of voltage in position.By changing position of the probe in copper-bath, the life of multistage fracturing horizontal well can be obtained
Pressure distribution during production in stratum.
Advantageous effects of the present utility model：The utility model uses above technical scheme, simulates multistage fracturing water
The major fracture of horizontal well and the form in time crack, according to the water power principle of similitude, can characterize low-permeability oil deposit pressure break horizontal well development
When, the pressure of diverse location in stratum, so as to provide foundation for the deployment for optimizing multistage fracturing horizontal well.
Brief description of the drawings
The following drawings is only intended to, in doing utility model schematic illustration and explanation, not limit model of the present utility model
Enclose.
A kind of low-permeability oil deposit multistage fracturing horizontal well pressure field distribution analogue means that Fig. 1 provides for the utility model
Structural representation.
Fig. 2 is the structural representation of simulation multistage fracturing horizontal well.
In figure：1- constant-voltage DC sources, 2- simulation multistage fracturing horizontal wells, 3- copper-baths, 4- voltmeters, 5- is led
Line, 6- probes, 7- lucite grooves, 8- dummy level pit shafts, 9- simulation major fractures, 10- simulations time crack.
Embodiment
To make those skilled in the art more clear and clear and definite the technical solution of the utility model, with reference to embodiment and
Accompanying drawing is described in further detail to the utility model, but embodiment not limited to this of the present utility model.
As shown in figure 1, the utility model is related to a kind of low-permeability oil deposit multistage fracturing horizontal well pressure field distribution simulation dress
Put, including it is constant-voltage DC source 1, simulation multistage fracturing horizontal well 2, copper-bath 3, voltmeter 4, wire 5, probe 6, organic
Glass guide channel 7.
As shown in figure 1, two mouth molds are provided with the machine glass guide channel 7 intends multistage fracturing horizontal well 2.Simulate major fracture 9
It is immersed in simulation time crack 10 in copper-bath 3.
As shown in figure 1, described simulation multistage fracturing horizontal well 2 is connected to described constant voltage DC by wire 5 respectively
The low-pressure end and high-pressure side of power supply 1.
As shown in figure 1, the voltmeter 4 connects the low-pressure end and the probe of the constant-voltage DC source 1 by wire 5
6。
As shown in Fig. 2 simulation multistage fracturing horizontal well 2 includes dummy level pit shaft 8, simulation major fracture 9, simulation time crack
10。
As shown in Fig. 2 the horizontal segment in the dummy level pit shaft 8 is provided with the simulation major fracture 9, adjacent simulation
The symmetric arrays of major fracture 9.The simulation time crack 10, adjacent simulation time crack 10 are welded with the simulation major fracture 9
Symmetric arrays.
Further, the dummy level pit shaft 8 is made up of the copper wire of 2.5 millimeters of diameter.
Further, the simulation major fracture 9 is made up of the copper wire of 1.5 millimeters of diameter.
Further, the simulation time crack 10 is made up of the copper wire of 1 millimeter of diameter.
As shown in figure 1, copper-bath 3 is provided with the lucite groove 7, the reservoir to simulate oil reservoir.
After the utility model is connected, one end of the probe 6 is immersed in copper-bath 3, probe 6 can be measured
The magnitude of voltage of position.By changing position of the probe 6 in copper-bath 3, multistage fracturing level can be obtained
Pressure distribution when well is produced in stratum.
Finally it should be noted that：Various embodiments above is only limited to illustrate the technical solution of the utility model, rather than to it
System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, or to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type.
Claims (3)
1. a kind of low-permeability oil deposit multistage fracturing horizontal well pressure field distribution analogue means, including constant-voltage DC source, simulate it is many
Level pressure break horizontal well, copper-bath, voltmeter, wire, probe, lucite groove, simulation multistage fracturing horizontal well, organic glass
Copper-bath is provided with glass groove and there are two mouth molds to intend multistage fracturing horizontal well, the simulation master of simulation multistage fracturing horizontal well is split
Seam and simulation time crack are immersed in copper-bath, and two mouth molds intend multistage fracturing horizontal well and are connected to constant pressure by wire respectively
The low-pressure end and high-pressure side of dc source, voltmeter wire are connected with constant-voltage DC source and the probe.
2. a kind of low-permeability oil deposit multistage fracturing horizontal well pressure field distribution analogue means, its feature according to claim 1
It is：The simulation multistage fracturing horizontal well includes dummy level pit shaft, simulation major fracture, simulation time crack, simulation water horizontal well
The horizontal segment of cylinder is welded with simulation time crack provided with simulation major fracture, simulation major fracture.
3. a kind of low-permeability oil deposit multistage fracturing horizontal well pressure field distribution analogue means, its feature according to claim 1
It is：The simulation time crack is made up of the copper wire of 1 millimeter of diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720117917.9U CN206487457U (en) | 2017-02-09 | 2017-02-09 | A kind of low-permeability oil deposit multistage fracturing horizontal well pressure field distribution analogue means |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720117917.9U CN206487457U (en) | 2017-02-09 | 2017-02-09 | A kind of low-permeability oil deposit multistage fracturing horizontal well pressure field distribution analogue means |
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| Publication Number | Publication Date |
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| CN206487457U true CN206487457U (en) | 2017-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720117917.9U Expired - Fee Related CN206487457U (en) | 2017-02-09 | 2017-02-09 | A kind of low-permeability oil deposit multistage fracturing horizontal well pressure field distribution analogue means |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110988041A (en) * | 2019-12-26 | 2020-04-10 | 中国石油大港油田勘探开发研究院 | Low-permeability condensate gas reservoir productivity testing device and method |
-
2017
- 2017-02-09 CN CN201720117917.9U patent/CN206487457U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110988041A (en) * | 2019-12-26 | 2020-04-10 | 中国石油大港油田勘探开发研究院 | Low-permeability condensate gas reservoir productivity testing device and method |
| CN110988041B (en) * | 2019-12-26 | 2022-04-08 | 中国石油大港油田勘探开发研究院 | Low-permeability condensate gas reservoir productivity testing device and method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170912 Termination date: 20180209 |
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| CF01 | Termination of patent right due to non-payment of annual fee |