CN206876464U - A kind of compact rock core can low-frequency vibration vacuumize saturation device - Google Patents
A kind of compact rock core can low-frequency vibration vacuumize saturation device Download PDFInfo
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- CN206876464U CN206876464U CN201720799423.3U CN201720799423U CN206876464U CN 206876464 U CN206876464 U CN 206876464U CN 201720799423 U CN201720799423 U CN 201720799423U CN 206876464 U CN206876464 U CN 206876464U
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- rock core
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Abstract
The utility model discloses a kind of compact rock core can low-frequency vibration vacuumize saturation device, including brine tank, booster pump, saturation room, vavuum pump, CO2Gas cylinder, round-bottomed flask, valve, source of the gas valve；Brine tank is provided with 1# temperature control devices, bottom is provided with agitating device, and the port of export is sequentially connected booster pump, saturation room by pipeline, and saturation room is provided with 2# temperature control devices, the port of export injects round-bottomed flask by setting valvular pipeline, and brine tank, booster pump, the port of export of saturation room are equipped with valve；Brine tank is connected to vavuum pump by a pipeline for being provided with two valves, and the pipeline that saturation room is provided with valve and source of the gas valve by one is connected to CO2Gas cylinder, brine tank are connected to saturation room to CO to a bypass line is provided between two valves between vavuum pump on pipeline2Between valve and source of the gas valve between gas cylinder on pipeline.The utility model can observe the pore volume for vacuumizing the degree of saturation and obtaining compact rock core, be easy to carry out follow-up laboratory experiment.
Description
Technical field
The utility model is related to development of low-permeability oil reservoir technical field, and in particular to a kind of compact rock core can low-frequency vibration take out
Vacuum saturation device.
Background technology
At present, as conventional gas and oil recoverable reserves is constantly reduced, compact oil reservoir has turned into the important set of China's oil resource
Into part.And compact oil reservoir, when carrying out laboratory physical simulation experiment, porosity, permeability are Study In Reservoir fluids in porous Jie
Two essential parameters of the seepage flow characteristics in matter.The pore volume for vacuumizing saturation water gaging rock core is one heavy to closing
The link wanted.If rock core degree of saturation is not high enough, porosity determination and follow-up displacement etc. can be given to produce considerable influence.
Therefore, some research and development have been carried out to correlation technique both at home and abroad, and have obtained certain achievement, such as Application No.
200710108392.3 Chinese patent《A kind of experimental method of artificial inhomogeneous rock core saturation water》, but it is vacuumizing saturation
During water, N is not considered2、O2Deng suction-operated of the gas on Rock Porous Media surface；Application No.
201120434183.X Chinese patent《A kind of rock core vacuumizing pressurization saturation device》, it is in injection CO2Displace hole Jie
N in matter2、O2During Deng gas, CO can not be intuitively determined when2Displacement is complete；In rock core before saturated brine, do not consider
Partially crystallizable precipitation be present in salt solution；During saturated brine, do not consider there is part CO2Adsorb on blowhole surface, make rock core
Hole saturation is incomplete.Due to compact rock core porosity, permeability is relatively low, reservoir properties are poor, and current vacuumizes saturation dress
Put and be relatively inaccessible to be expected preferable effect, can not intuitively observe CO2Whether saturation is complete, and experimental error is larger.
Utility model content
In view of the above-mentioned problems, the utility model provide it is a kind of be easy to measure compact rock core pore volume can low-frequency vibration take out
Vacuum saturation device, it more can intuitively observe the degree for vacuumizing saturation, more accurately obtain the pore-body of compact rock core
Product, is easy to carry out follow-up laboratory experiment, the seepage flow characteristics truly reflected in compact oil reservoir pore media.
The technical solution of the utility model is：
A kind of compact rock core can low-frequency vibration vacuumize saturation device, including brine tank, booster pump, saturation room, vavuum pump,
CO2Gas cylinder, round-bottomed flask, valve, source of the gas valve；Brine tank is provided with 1# temperature control devices, and bottom is provided with agitating device, and the port of export leads to
Cross pipeline and be sequentially connected booster pump, saturation room, saturation room is provided with 2# temperature control devices, bottom equipped with can low-frequency vibration vibration dress
Put the port of export and inject round-bottomed flask by setting valvular pipeline, brine tank, booster pump, the port of export of saturation room are equipped with valve
Door；Brine tank is connected to vavuum pump by a pipeline for being provided with two valves, saturation room by one be provided with valve and
The pipeline of source of the gas valve is connected to CO2Gas cylinder, brine tank bypass between two valves between vavuum pump on pipeline provided with one
Pipeline, saturation room is connected to CO2Between valve and source of the gas valve between gas cylinder on pipeline.
Further, brine tank is provided with 1# temperature control devices, and bottom is provided with agitating device.It is so designed that, in saturated brine
During, it is possible that causing moisture evaporation situations such as temperature-pressure, there are fraction NaCl crystallizations to separate out, be injected into rock core
Venturi is blocked in hole, causes experimental error, therefore when this situation occurs, can open 1# temperature control devices in brine tank and
The agitating device of salt solution pot bottom, elevates the temperature, and promotes NaCl dissolution of crystals, reduces experimental error.
Further, the port of export of brine tank is provided with a bypass line, is connected to the port of export of booster pump.
Further, in saturation room equipped with can low-frequency vibration vibrating device.During saturated brine, there can be portion
Divide CO2Gas absorption causes pore volume calculation error larger on blowhole surface, thus increase by one in saturation room can be low
The device of frequency vibration so that CO2Molecular motion is more violent, more efficiently promotes CO2Desorption in Rock Porous Media, dissolving
Come out in salt solution by displacement, accurately calculate pore volume.
Further, 2# temperature control devices are provided with above saturation room.
Round-bottomed flask is built with Ca (OH)2Solution, it is therefore an objective to during vacuumizing, CO2Sky in gas displacement rock core
, can be more intuitively according to a large amount of CaCO generated within a short period of time during gas3White precipitate, judge CO2Whether by pore media
In N2And O2Displacement is complete, saves time and cost.
The beneficial effects of the utility model are：
1st, can be more intuitively according to a large amount of CaCO generated within a short period of time in the utility model3White precipitate, sentence
Disconnected CO2Whether by the N in pore media2And O2Displacement is complete, saves the time, reduces cost；
2nd, brine tank is provided with 1# temperature control devices, and bottom adds the device of stirring, can be advantageous to NaCl dissolution of crystals；
3rd, in saturation room equipped with can low-frequency vibration device, make CO2Molecular motion is more violent, more efficiently promotes CO2In rock
The desorption of heart pore media, is dissolved in salt solution and is come out by displacement, accurately calculates pore volume.
4th, the utility model is simple to operate, cost is relatively low, effect is preferable, can largely improve compact rock core saturation journey
Degree, makes pore volume more accurate, more precisely data supporting is provided for follow-up simulating lab test, is advantageous to carry out densification
The research of the seepage flow characteristics of reservoir of porous medium.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure：
1 it is saturation room, 2 be 2# temperature control devices, 3 be vavuum pump, 6 is CO2Gas cylinder, 7 be source of the gas valve, 9 be brine tank, 12 be
Booster pump, 13 be 1# temperature control devices, 14 be pipeline, 15 be vibrating device, 17 be agitating device, 18 be round-bottomed flask；
4th, 5,8,10,11,16 be valve.
Embodiment
The utility model is further illustrated with reference to the accompanying drawings and examples.
As shown in figure 1, a kind of compact rock core can low-frequency vibration vacuumize saturation device, including saturation room 1, vavuum pump 3,
CO2Gas cylinder 6, brine tank 9, booster pump 12, round-bottomed flask 18；Brine tank 9 is provided with 1# temperature control devices 13, and salt solution pot bottom is provided with
Valve 11 is provided between the pipeline 14 that agitating device 17, brine tank 9 and booster pump 12 connect, saturation room 1 is connected with booster pump 12
Pipeline between be provided with valve 10, be provided with valve 16, CO between the pipeline 14 that saturation room 1 and round-bottomed flask 19 connect2Gas cylinder 6 goes out
Mouth end is provided with source of the gas valve 7, saturation room 1 and CO2Valve 4 is provided between the pipeline 14 that gas cylinder 6 connects, vavuum pump 3 connects with brine tank 9
The pipeline 14 connect is provided with valve 5 and valve 8, and has pipeline 14 to be connected with saturation room 1 between valve 5 and valve 8；Saturation room
1 is provided with 2# temperature control devices 2, and the pipeline 14 on the right side of saturation room 1 is provided with valve 16, and Ca (OH) is housed by the connection of pipeline 142
The round-bottomed flask 18 of solution, the upper end of saturation room 1 are provided with 2# temperature control devices 2, bottom equipped with can low-frequency vibration vibrating device 15.
1# temperature control devices 13 and 2# 2 structures of temperature control device are identical, are all provided with live wire connection power supply, the side heated by electric power
Formula realizes temperature control.
A kind of compact rock core can low-frequency vibration device application method, its specific experiment step is as follows：
1) all valves are closed, whether the pressure observed in saturation room 1 is stablized, and checks the air-tightness of all devices；If pressure
Power is stable, then air-tightness is good, if there is pressure rise, checks the place of gas leakage and repairs；
2) compact rock core is placed in saturation room 1, opens 2# temperature control devices 2；
3) start vavuum pump 3, open valve 4 and valve 5, saturation room 1 vacuumize within 3 hours, made in saturation room 1
Pressure it is continual and steady；
4) vavuum pump 3 is closed, closes valve 5, opens CO2Gas cylinder 6 and valve 7, to the gas injection of saturation room 1, and observe full
With the pressure gauge in room 1 to corresponding numerical value, Ca (OH) is treated2There are a large amount of CaCO in solution3When white precipitate separates out, illustrate CO2Fill out
Charge complete；
5) step 4 is repeated 2-3 times, until it is determined that displacing the O in pore media completely2And N2After gas, valve is closed
4th, 6 and 16；
6) if the precipitation of NaCl crystal occurs in the bottom of brine tank 9,1# temperature control devices 13 are opened, and start bottom stirring device
17, make NaCl dissolution of crystals；After NaCl dissolvings terminate, valve 10 is opened, starts the vibrating device 15 of the low frequency in saturation room 1,
Salt solution is injected into saturation room 1, promotes absorption in the intrapore CO of rock core2Desorption, strengthens its dissolving in salt solution；
7) all valves are closed, while start 2# temperature control devices 2, run certain time；
8) open valve 11 and booster pump 12 is pressurized to saturation room 1, saturation is for a period of time；
9) saturation terminates, release removal of core.
It is described above, only it is preferred embodiment of the present utility model, not the utility model is made any formal
Limitation, although the utility model is disclosed above with preferred embodiment, but be not limited to the utility model, it is any ripe
Professional and technical personnel is known, is not being departed from the range of technical solutions of the utility model, when in the technology using the disclosure above
Hold the equivalent embodiment made a little change or be modified to equivalent variations, as long as being without departing from technical solutions of the utility model
Hold, any simple modification, equivalent change and modification made according to the technical essence of the utility model to above example, still
Belong in the range of technical solutions of the utility model.
Claims (5)
1. a kind of compact rock core can low-frequency vibration vacuumize saturation device, it is characterised in that including brine tank, booster pump, saturation
Room, vavuum pump, CO2Gas cylinder, round-bottomed flask, valve, source of the gas valve；Brine tank is provided with 1# temperature control devices, and bottom is provided with stirring and filled
Put, the port of export is sequentially connected booster pump, saturation room by pipeline, and saturation room is provided with 2# temperature control devices, the port of export by provided with
The pipeline injection round-bottomed flask of valve, brine tank, booster pump, the port of export of saturation room are equipped with valve；Brine tank passes through one
The pipeline for being provided with two valves is connected to vavuum pump, and the pipeline that saturation room is provided with valve and source of the gas valve by one is connected to
CO2Gas cylinder, brine tank are connected to saturation room and arrived to a bypass line is provided between two valves between vavuum pump on pipeline
CO2Between valve and source of the gas valve between gas cylinder on pipeline.
2. a kind of compact rock core according to claim 1 can low-frequency vibration vacuumize saturation device, it is characterised in that salt solution
Tank is provided with 1# temperature control devices, and salt solution pot bottom is provided with agitating device.
3. a kind of compact rock core according to claim 1 can low-frequency vibration vacuumize saturation device, it is characterised in that salt solution
The port of export of tank is provided with a bypass line, is connected to the port of export of booster pump.
4. a kind of compact rock core according to claim 1 can low-frequency vibration vacuumize saturation device, it is characterised in that saturation
Interior equipped with can low-frequency vibration vibrating device.
5. a kind of compact rock core according to claim 4 can low-frequency vibration vacuumize saturation device, it is characterised in that saturation
2# temperature control devices are provided with above room.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720799423.3U CN206876464U (en) | 2017-07-04 | 2017-07-04 | A kind of compact rock core can low-frequency vibration vacuumize saturation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720799423.3U CN206876464U (en) | 2017-07-04 | 2017-07-04 | A kind of compact rock core can low-frequency vibration vacuumize saturation device |
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| Publication Number | Publication Date |
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| CN206876464U true CN206876464U (en) | 2018-01-12 |
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| CN201720799423.3U Expired - Fee Related CN206876464U (en) | 2017-07-04 | 2017-07-04 | A kind of compact rock core can low-frequency vibration vacuumize saturation device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110108620A (en) * | 2019-05-29 | 2019-08-09 | 天津大学 | A kind of self-saturation automatic collection lysimeter |
| CN111044569A (en) * | 2019-12-27 | 2020-04-21 | 中铁建大桥工程局集团第二工程有限公司 | Tunnel concrete structure defect detection method |
| CN112924260A (en) * | 2021-01-26 | 2021-06-08 | 中国石油大学(华东) | Calcareous cemented artificial rock core and preparation method and application thereof |
-
2017
- 2017-07-04 CN CN201720799423.3U patent/CN206876464U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110108620A (en) * | 2019-05-29 | 2019-08-09 | 天津大学 | A kind of self-saturation automatic collection lysimeter |
| CN111044569A (en) * | 2019-12-27 | 2020-04-21 | 中铁建大桥工程局集团第二工程有限公司 | Tunnel concrete structure defect detection method |
| CN112924260A (en) * | 2021-01-26 | 2021-06-08 | 中国石油大学(华东) | Calcareous cemented artificial rock core and preparation method and application thereof |
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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: 20180112 Termination date: 20180704 |
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| CF01 | Termination of patent right due to non-payment of annual fee |