CN106324009A - Core displacement test equipment and test method - Google Patents
Core displacement test equipment and test method Download PDFInfo
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- CN106324009A CN106324009A CN201510392019.XA CN201510392019A CN106324009A CN 106324009 A CN106324009 A CN 106324009A CN 201510392019 A CN201510392019 A CN 201510392019A CN 106324009 A CN106324009 A CN 106324009A
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- rock core
- ring
- ring pressure
- pressure
- pressure medium
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Abstract
The invention discloses core displacement test equipment and a test method. The core displacement test equipment comprises a core clamping device, an annular pressure heating device and a nuclear magnetic resonance device, wherein the core clamping device comprises a cylindrical cavity; the cavity is used for placing a core, and an annular pressure medium input and an annular pressure medium output are respectively formed in two ends of the cavity; an annular pressure space is formed between the inner wall of the cavity and the core; the annular pressure heating device is connected to the annular pressure medium input and the annular pressure medium output through pipelines to form an annular pressure loop; the nuclear magnetic resonance device is operably connected with the core clamping device and comprises a magnetic body, a probe, nuclear electron equipment and an operation control console. According to the core displacement test equipment and the test method, a high-temperature and high-pressure displacement test for compact sand can be carried out on the nuclear magnetic resonance device; furthermore, the test equipment can bear high temperature and high annular pressure, and meet the test requirement.
Description
Technical field
The present invention relates to the experimental facilities of a kind of oilfield prospecting developing, add with ring pressure particularly to one
The rock core displacement test equipment of thermal and the experimental technique of rock core displacement.
Background technology
The displacement test of Sandstone Gas Reservoir is dynamically to carry out rock core water drive oil, CO2 for simulation stratum condition
The displacement of reservoir oil, CO2 handle up, chemical flooding research work, and application nuclear magnetic resonance technique can in displacement test is studied
Dynamically observe rock core internal pore structure oil displacement efficiency and Remaining Oil Distribution.
In rock core fluid relative permeability measure be oil field development laboratory most important fundamental analysis project it
One, the accuracy of its test result directly affects the development effectiveness in oil field.Prior art propose multiple
Rock core displacement test equipment, it mainly includes the analysis and detection device of core clamping device and porous media.
Chinese patent application publication number CN101458218A discloses a kind of carbon dioxide oil-displacing nmr
Imaging detection device, its mainly include injected system, simulation core device, NMR imaging equipment,
Temperature, pressure TT&C system and outlet metering system.Description according to the document, it can be seen that it exists
Subject matter: the 1. rock core of simulation core device is filling quartz sand rather than natural core.Additionally simulate
Coring device is filling out of heatproof for heating, can not add ring pressure, i.e. simulation core device around rock core
Sand mo(u)ld type, and can not simulated formation Sandstone Gas Reservoir reservoir pressure.2. the sandpack column in experiment injects pressure
Power is compared with tight sand rock core, and pressure is relatively low.The most whole detection device does not has online vacuumized part.Always
On body, this detection device can not meet simulated formation compact oil reservoir pressure experiment requirement.
The information being disclosed in this background section is merely intended to increase the reason of the general background to the present invention
Solve, and be not construed as recognizing or imply in any form that this information structure is for this area general technology
Prior art well known to personnel.
Summary of the invention
It is an object of the present invention to provide a kind of rock core displacement test equipment, thus overcome prior art
In experimental facilities in rock core cannot be added ring pressure shortcoming.
Another object of the present invention is to provide experimental facilities and the experimental technique of a kind of rock core displacement, its energy
Enough significantly improve the pressure and temperature in rock core displacement test, thus realize rock core displacement test equipment simulating
Stratum compact oil reservoir temperature, pressure, to utilize nuclear magnetic resonance technique to carry out tight sand storage online in real time
Layer body is for experimentation.
For achieving the above object, one aspect of the present invention provides a kind of rock core displacement test equipment, uses
In the temperature and pressure of simulated formation compact oil reservoir, this rock core displacement test equipment includes: rock core clamping dress
Putting, it includes that columnar cavity, described cavity are used for placing rock core, and the two ends of described cavity are respectively
It is provided with ring pressure medium input port and ring pressure medium delivery outlet, shape between inwall and the described rock core of described cavity
Ring has been become to press space；Ring pressure heater, it is connected to described ring pressure medium input port and ring by pipeline
Pressure medium delivery outlet, pushes back road constituting ring, and this ring pressure heater includes: the first ring pressure media Containers,
It is used for depositing ring pressure medium；Ring press pump, it is used for pumping ring pressure medium；And add heat container, its with
Described ring press pump is connected and for heating described ring pressure medium；And nuclear magnetic resonance device, its
Being operatively connected with described core clamping device, described nuclear magnetic resonance device includes magnet, probe, core
Electronic equipment and operating console.
Preferably, in technique scheme, the two ends of described core clamping device be provided with rock core input port and
It is provided with rock core delivery outlet.
Preferably, in technique scheme, at described rock core input port, it is provided with vacuum extractor.
Preferably, in technique scheme, described ring pressure heater also includes back-pressure valve and backpressure pump,
This back-pressure valve and backpressure pump are located at the downstream that described ring pushes back on road and is positioned at described rock core delivery outlet, to incite somebody to action
Described ring pressure medium is transmitted back to described first ring pressure media Containers.
Preferably, in technique scheme, described ring pushes back road and is provided with temperature controller, to control
State the temperature adding heat container.
Preferably, in technique scheme, described ring pushes back and is additionally provided with temperature sensor on road, to measure
The temperature of described columnar cavity.
Preferably, in technique scheme, described ring pushes back road and is provided with Pressure gauge and back pressure meter, described
Pressure gauge is used to refer to the ring pressure value that described ring press pump is provided, and described back pressure meter is used to refer to described back pressure
The back pressure value that pump is provided, described ring pressure value is more than described back pressure value.
Another aspect provides the experimental technique of a kind of rock core displacement, it use as previously mentioned
Rock core displacement test equipment carry out, it is characterised in that described experimental technique includes: by rock core place
In the columnar cavity of described core clamping device；Ring is pressed medium be transported to by ring press pump described
Add heat container, so that this ring pressure medium is pressurizeed and to be heated；By the ring pressure medium through pressurization and heating
It is transported in described cavity, so that described rock core is added ring pressure；Start described vacuum extractor, by institute
State evacuation in cavity；Start described nuclear magnetic resonance device to carry out displacement test.
Preferably, ring pressure medium is pressurized to 45MPa, and temperature is heated to 100 DEG C.
Compared with prior art, there is advantages that
1. the rock core displacement test equipment of the present invention has ring pressure heater, it is achieved that at nuclear magnetic resonance device
On carry out tight sand high temperature, high pressure displacement test.
2. experimental facilities described in can bear 45MPa, the ring pressure of temperature 100 DEG C, meets requirement of experiment.
3. on experimental facilities, simulate tight sandstone reservoir temperature, pressure, carried out different permeability rock core,
Water drive oil under different displacement pressures, the CO2 displacement of reservoir oil, CO2 handle up displacement test research work.The present invention's
The indices performance of experimental facilities meets requirement of experiment, and displacement test research work smoothly completes.Experiment
Device is reliable, durable.
4. in displacement test equipment described in, the combination of each part is simple, convenient, it is achieved that the module of different piece
Change and connect.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the rock core displacement test equipment according to the present invention.
Fig. 2 is the flow chart of the core displacement experiment method according to the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings, the detailed description of the invention of the present invention is described in detail, it is to be understood that this
The protection domain of invention is not limited by detailed description of the invention.
Explicitly indicate that unless otherwise other, otherwise in entire disclosure and claims, term " bag
Include " or its conversion as " comprising " or " including " etc. will be understood to comprise stated element or
Ingredient, and do not get rid of other element or other ingredient.
Fig. 1 shows the rock core displacement test based on invention of the present invention according to the specific embodiment of the invention
The schematic diagram of equipment.As it is shown in figure 1, rock core displacement test equipment according to the preferred embodiment of the present invention
Mainly include core clamping device, ring pressure heater and nuclear magnetic resonance device three part.
Core clamping device includes columnar cavity 5, and inside is used for placing rock core 6.This cavity 5 is used for
Carrying is applied to ring pressure and the temperature of rock core 6.Owing to rock core 6 puts into after cavity the upper lower wall with cavity 5
Between there is gap, constitute ring pressure space so that ring pressure medium can flow through the periphery of rock core 6 to execute
Add ring pressure.The left end of cavity 5 is provided with ring pressure medium input port 9, and right-hand member is provided with ring pressure medium delivery outlet 8,
Ring pressure medium is entered into cavity 5 inside by ring pressure medium input port 9 and is applied on the outer wall of rock core 6,
Carry out ring pressure test.In the present embodiment, the outer wrap of rock core 6 has rubber case, and ring pressure medium is only
Contact with the outer wrapping rubber case of rock core 6, directly do not contact with rock core.Additionally, described rock core clamping dress
The two ends put are provided with rock core input port 7 and are provided with rock core delivery outlet 10, for placement and the removal of rock core.
In the present invention, described ring pressure heater is connected to described ring pressure medium input port 9 by pipeline
Press medium delivery outlet 8 with ring, push back road constituting ring.According to a preferred implementation, described ring pressure adds
Thermal includes the first ring pressure media Containers 18, ring press pump 17, adds heat container 13, switch 15, temperature
Sensor 11 and temperature controller 12.Ring press pump 17 is by the ring pressure medium in the first ring pressure media Containers 18
It is transferred to add heat container 13 through the first pipeline 16 heat, has heated rear ring pressure medium and passed through chamber
The ring pressure medium inlet 9 of body 5 enters in cavity 5, thus rock core 6 applies the ring pressure of some strength
And temperature.Wherein, switch 15 is the switch of the outfan adding heat container 13, and temperature controller 12 is used for
Controlling to add the temperature of heat container 13, temperature sensor 11 is used for measuring the temperature of columnar cavity 5,
And temperature controller 12 also controls the temperature of rock core 6.
Preferably, described ring pressure heater also includes back-pressure valve 20 and backpressure pump 21, and both is arranged on
Ring pushes back on road and is positioned at the downstream of ring pressure medium delivery outlet 8.Backpressure pump 21 is held by the second ring pressure medium
Ring pressure medium in device 22 pressurizes to back-pressure valve 20.The ring pressure medium flowed out from cavity 5 is through back pressure
Valve 20 and backpressure pump 21, and returned to the first ring pressure media Containers 18, thus shape through the second pipeline 23
Become the medium circulation of pressure-maintaining and heat-preservation.
In a preferred embodiment of the invention, ring pressure heater is additionally provided with Pressure gauge 14 and back pressure meter 19.
The size of the ring pressure value that Pressure gauge 14 is pumped for indicating ring press pump 17.Back pressure meter 19 is for indicating back
The size of pressure value.Its medium ring press pump 17 is added on the pressure of the ring pressure slightly above back-pressure valve 20 of rock core 6,
Described nuclear magnetic resonance device is mainly by magnet 1, probe 2, electronic equipment 3 and operating console 4
Composition.When rock core 6 is put into after nuclear-magnetism core clamping device equipped, core clamping device is put into
In probe 2, rock core input port 10 and/or the delivery outlet 11 of core clamping device are connected to vacuum means
Putting, rock core starts displacement test after adding ring pressure temperature evacuation saturated oils and be stable, now opens nuclear-magnetism
Electronic equipment 3, operating console 4, can carry out the dynamic displacement test of nuclear-magnetism testing rock core online.
Below in conjunction with the Fig. 2 step to the experimental technique of rock core displacement according to the preferred embodiment of the present invention
It is described.
First, the tight sand rock core needing to carry out testing is selected.In the present embodiment, rock core length is
Big 300 millimeters, diameter 25 millimeters.
Secondly, in step S101, rock core 6 is put into the columnar cavity 5 of core clamping device
In, and core clamping device is put in the probe 2 of nuclear magnetic resonance equipment.
Then, in step s 102, ring is pressed medium pass through ring press pump 17 and is transported to add heat container 13,
Ring pressure medium is made to be heated to certain pressure and uniform temperature.
Then, in step s 103, the ring pressure medium through pressurization and heating is transported in cavity 5,
So that described rock core is added ring pressure.Have the ring pressure medium of certain pressure and temperature only with rock core 6 outside
Parcel rubber case contact, does not directly contact with rock core 6.In order to be able to make the ring pressure medium of pressurized, heated to rock
The heart 6 keeps certain ring pressure and temperature, it is necessary to make ring pressure medium carry out pressure-maintaining and heat-preservation circulation.This has added
The ring pressure medium of pressure heating is transferred to back-pressure valve 20 by ring pressure medium delivery outlet 8.The pressure of back-pressure valve 20
Being supplied by backpressure pump 21, its value is slightly less than ring pressure value numerical value, it is achieved thereby that pressurized, heated medium pressurize is protected
Temperature circulation, temperature sensor simultaneously 11 detects ring pressure medium temperature in core clamping device in real time.
It follows that in step S104, start vacuum extractor, by evacuation in cavity 5.In this reality
Execute in example, the rock core delivery outlet 10 of core clamping device left end is closed, open the rock core input port of right-hand member
7 valves being connected with vacuum equipment, start vacuum pump and start rock core vacuumizing.Complete after evacuation
Saturated oils sets up irreducible water process.
Finally, in step S105, starting described nuclear magnetic resonance device to carry out displacement test, startup is driven
Water drive oil or CO2 oil displacement experiment is started for pump.Rock core ring pressure is consistently higher than water or CO2 oil displacement pressure.
The original state of displacement test, starts nuclear magnetic resonance device testing rock core original saturated oils state, bag
Include image and T2 spectrum.In water drive oil or any time of CO2 oil displacement process, nuclear magnetic resonance, NMR all can be applied
Device obtains image and T2 spectrum.After displacement test completes, application nuclear magnetic resonance device obtains rock core remaining oil
Distributed image and T2 spectrum.
Rock core displacement test equipment based on present invention design, it is owing to having possessed ring pressure heater, and
Combine vacuum equipment and nuclear magnetic resonance device, thus realize simulated formation tight sandstone reservoir temperature and pressure
Power, online evacuation saturated core sample, online water drive oil, the CO2 displacement of reservoir oil, CO2 handle up and enter one
Step carries out chemical flooding research work.
The aforementioned description to the specific illustrative embodiment of the present invention illustrates that and the purpose of illustration.
These descriptions are not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to above-mentioned
Teaching, can much change and change.The purpose selected exemplary embodiment and describe exists
In explaining the certain principles of the present invention and actual application thereof, so that those skilled in the art can be real
Now and utilize the various different exemplary of the present invention and various different selection and change.
The scope of the present invention is intended to be limited by claims and equivalents thereof.
Claims (9)
1. a rock core displacement test equipment, for the temperature and pressure of simulated formation compact oil reservoir, it is special
Levying and be, this rock core displacement test equipment includes:
Core clamping device, it includes that columnar cavity, described cavity are used for placing rock core, and described
Cavity be respectively arranged at two ends with ring pressure medium input port and ring pressure medium delivery outlet, the inwall of described cavity and
Ring pressure space is defined between described rock core；
Ring pressure heater, it is connected to described ring pressure medium input port by pipeline and ring pressure medium exports
Mouthful, pushing back road constituting ring, this ring pressure heater includes:
First ring pressure media Containers, it is used for depositing ring pressure medium；
Ring press pump, it is used for pumping ring pressure medium；And
Adding heat container, it is connected with described ring press pump and for heating described ring pressure medium；
And
Nuclear magnetic resonance device, it is operatively connected with described core clamping device, and described nuclear magnetic resonance, NMR fills
Put and include magnet, probe, nuclear electron equipment and operating console.
Rock core displacement test equipment the most according to claim 1, it is characterised in that described rock core presss from both sides
The two ends holding device are provided with rock core input port and are provided with rock core delivery outlet.
Rock core displacement test equipment the most according to claim 1, it is characterised in that described rock core is defeated
Entrance and/or described rock core equipped at outlet port are provided with vacuum extractor.
Rock core displacement test equipment the most according to claim 1, it is characterised in that described ring pressure adds
Thermal also includes back-pressure valve, backpressure pump and the second ring pressure media Containers, and this back-pressure valve and backpressure pump are located at
Described ring pushes back on road and is positioned at the downstream of described rock core delivery outlet, so that described ring pressure medium is transmitted back to institute
State the first ring pressure media Containers.
Rock core displacement test equipment the most according to claim 1, it is characterised in that described ring pushes back
Road is provided with temperature controller, to add the temperature of heat container described in control.
Rock core displacement test equipment the most according to claim 5, it is characterised in that described ring pushes back
Temperature sensor it is additionally provided with, to measure the temperature of described columnar cavity on road.
Rock core displacement test equipment the most according to claim 4, it is characterised in that described ring pushes back
Road is provided with Pressure gauge and back pressure meter, and described Pressure gauge is used to refer to the ring pressure value that described ring press pump is provided,
Described back pressure meter is used to refer to the back pressure value that described backpressure pump is provided, and described ring pressure value is more than described back pressure
Value.
8. an experimental technique for rock core displacement, it uses rock core displacement as claimed in claim 4 real
The equipment of testing is carried out, it is characterised in that described experimental technique includes:
Rock core is placed in the columnar cavity of described core clamping device,
Ring is pressed medium by ring press pump be transported to described in add heat container, with to this ring pressure medium pressurize
And heating；
Ring pressure medium through pressurization and heating is transported in described cavity, to add described rock core
Ring pressure；
Start described vacuum extractor, by evacuation in described cavity；
Start described nuclear magnetic resonance device to carry out displacement test.
The experimental technique of rock core displacement the most according to claim 8, its medium ring pressure medium is pressurized to
45MPa, temperature is heated to 100 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510392019.XA CN106324009B (en) | 2015-07-06 | 2015-07-06 | Rock core displacement test equipment and experimental method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510392019.XA CN106324009B (en) | 2015-07-06 | 2015-07-06 | Rock core displacement test equipment and experimental method |
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| Publication Number | Publication Date |
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| CN106324009A true CN106324009A (en) | 2017-01-11 |
| CN106324009B CN106324009B (en) | 2018-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510392019.XA Active CN106324009B (en) | 2015-07-06 | 2015-07-06 | Rock core displacement test equipment and experimental method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107132240A (en) * | 2017-06-07 | 2017-09-05 | 中国石油天然气股份有限公司 | A kind of CT fills experimental provision with high-temperature, high pressure fluid |
| CN108152317A (en) * | 2017-12-22 | 2018-06-12 | 浙江海洋大学 | A kind of device and application method that high temp profile control agent plugging effect is driven using nuclear magnetic resonance technique evaluation steam |
| CN113218985A (en) * | 2021-05-10 | 2021-08-06 | 贵州大学 | High-pressure high-temperature changing device for nuclear magnetic resonance triaxial experiment and operation method thereof |
| CN113406134A (en) * | 2021-06-03 | 2021-09-17 | 中国石油化工股份有限公司 | Testing method and testing device for water-drive pore structure change of loose rock core |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113218985A (en) * | 2021-05-10 | 2021-08-06 | 贵州大学 | High-pressure high-temperature changing device for nuclear magnetic resonance triaxial experiment and operation method thereof |
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| CN113406134A (en) * | 2021-06-03 | 2021-09-17 | 中国石油化工股份有限公司 | Testing method and testing device for water-drive pore structure change of loose rock core |
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| CN106324009B (en) | 2018-05-11 |
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