CN105258840B - A kind of method measuring the optimal miscible pressure of carbon dioxide between injection-production well and mixed phase region - Google Patents
A kind of method measuring the optimal miscible pressure of carbon dioxide between injection-production well and mixed phase region Download PDFInfo
- Publication number
- CN105258840B CN105258840B CN201510655367.1A CN201510655367A CN105258840B CN 105258840 B CN105258840 B CN 105258840B CN 201510655367 A CN201510655367 A CN 201510655367A CN 105258840 B CN105258840 B CN 105258840B
- Authority
- CN
- China
- Prior art keywords
- pressure
- carbon dioxide
- mixed phase
- crude oil
- natural gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention discloses a kind of method measuring the optimal miscible pressure of carbon dioxide between injection-production well and mixed phase region, solve the problem that the minimum miscibility pressure that back-up sand method records does not conforms to the actual conditions.First make carbon dioxide gradually contact under the conditions of different pore throats with crude oil containing natural gas to reach mixed phase and test the minimum miscibility pressure under the conditions of different pore throats, then well is injected to the plane heterogeneity between extraction well according to actual reservoir, test carbon dioxide under the natural core pore throat of different permeabilities for this reservoir and the actual minimum miscibility pressure Pm of crude oil containing natural gas, obtain optimal miscible pressure P of this reservoir.The inventive method can obtain the minimum miscibility pressure of actual heterogeneous reservoir, can simulate actual heterogeneous reservoir and carry out carbon dioxide mixed phase and drive, and draw carbon dioxide mixed phase according to experimental result and drive distribution situation figure, beneficially numerical simulation popularization and application.
Description
Technical field
The present invention relates to a kind of method and device realizing that carbon dioxide mixed phase drives, belong to carbon dioxide flooding and improve recovery ratio
Technical field.
Background technology
Carbon dioxide drive is one of method of raising recovery ratio most potential in tertiary oil recovery, and carbon dioxide flooding is divided into
Mixed phase drives and non-phase-mixing driving, and the oil displacement efficiency that mixed phase drives is better than non-phase-mixing driving.In mining site, the ideal state of carbon dioxide flooding is
The ratio that mixed phase drives is the bigger the better, but the regional extent that carbon dioxide mixed phase drives has much on earth, and current field test is returned not
Go out concrete test evaluation, situation about driving for mixed phase in objective evaluation reservoir, need to carry out the indoor experiment of related carbon dioxide.
Current carbon dioxide flooding in-house laboratory investigation needs to test optimal miscible pressure P of reservoir, then using P as returning
Pressure, is simulated mixed phase between well and drives experiment, draw carbon dioxide mixed phase and drive regional distribution chart.And test optimal miscible pressure P, need
Tubule to be carried out test minimum miscibility pressure experiment, the subject matter of slim-tube test test minimum miscibility pressure is to use at present
In simulation tubule, the method for back-up sand is tested, and what it recorded is the minimum miscibility pressure at a certain specific processing condition,
It and actual reservoir has plane heterogeneity, is i.e. uneven from injecting well to the Permeability Distribution extraction well, so
The minimum miscibility pressure of experiment gained can not represent the real minimum miscibility pressure of actual reservoir, even if displacement pressure reaches to survey
The minimum miscibility pressure obtaining, also cannot realize in reservoir that complete mixed phase drives.
Content of the invention
The present invention is directed to use the method for back-up sand in simulation tubule to test the minimum mixed phase pressure of carbon dioxide and crude oil at present
Power, obtain is the minimum miscibility pressure under specific processing condition, and actual reservoir has plane heterogeneity, causes test knot
Really inaccurate problem, devises a kind of method measuring carbon dioxide and the optimal miscible pressure of crude oil, surveys such that it is able to utilize
Optimal miscible pressure realize that carbon dioxide mixed phase drives the maximization of region area, and will appreciate that identical carbon dioxide with
Can crude oil realize mixed phase in different permeability zones, and can obtain carbon dioxide mixed phase and drive distribution map.
In order to realize foregoing invention purpose, the technical solution used in the present invention is: carbon dioxide between a kind of mensuration injection-production well
Optimal miscible pressure and the method in mixed phase region, particularly:
First, make carbon dioxide gradually contact under the conditions of different pore throats with crude oil containing natural gas to reach mixed phase and test not
With the minimum miscibility pressure under the conditions of pore throat
(1) test carbon dioxide and crude oil containing natural gas reaches the minimum miscibility pressure of mixed phase under the conditions of completely attaching to
P1；
(2) by above-mentioned minimum miscibility pressure P1As back pressure, test carbon dioxide and crude oil containing natural gas are at back-up sand tubule
In i.e. pore throat reach the minimum miscibility pressure P of mixed phase in the case of amplification2；
2nd, inject well to the plane heterogeneity between extraction well according to actual reservoir, test this reservoir and ooze in difference
Carbon dioxide under the natural core pore throat of saturating rate and the actual minimum miscibility pressure Pm of crude oil containing natural gas, obtain this reservoir
Optimal miscible pressure P
(1) by P2As back pressure, test carbon dioxide reaches in the natural core of different permeabilities from crude oil containing natural gas
To the minimum miscibility pressure of mixed phase, obtain carbon dioxide and crude oil i.e. contact in actual small pore throat basic fully in the case of
Carbon dioxide and the minimum miscibility pressure P of crude oil containing natural gas3、 P4、 P5、 P6... Pn, n are the different permeabilities of actual reservoir
Number, P3、 P4、 P5、 P6... numerical value Pm maximum in Pn is the actual minimum miscibility pressure of reservoir；
(2) P is compared3、 P4、 P5、 P6... fracture pressure Po of Pn and corresponding actual reservoir, determine the optimal of this reservoir
Miscible pressure P, P is less than Po and is P4、 P5、 P6... the maximum in Pn；
3rd, it using P as back pressure, is simulated mixed phase between well and drives experiment, draw carbon dioxide mixed phase and drive regional distribution chart.
Measuring above-mentioned minimum miscibility pressure, need to using a kind of THE MINIMUM MISCIBLE PRESSURE device, this device includes feed system
Minimum miscibility pressure test suite under the conditions of completely attaching to of system, carbon dioxide and crude oil, carbon dioxide with crude oil at tubule
In minimum miscibility pressure test suite and minimum miscibility pressure test suite in natural core of carbon dioxide and crude oil, gas
Fluid meter and liquid meter, wherein: described feeding system, including carbon dioxide provisioning component and oil supply containing natural gas
Assembly.
Described carbon dioxide provisioning component, including carbon dioxide constant voltage constant speed pump, carbon dioxide holding tank and carbon dioxide
Flow integrator, described carbon dioxide constant voltage constant speed delivery side of pump is connected with the suction line of carbon dioxide holding tank, titanium dioxide
The outlet of carbon storage tank is connected with the suction line of carbon dioxide flow integrating instrument.
The described assembly of oil supply containing natural gas, including the constant voltage constant speed pump of crude oil containing natural gas, piston container and containing natural
Gas crude oil flow integrator, the described constant voltage constant speed delivery side of pump of crude oil containing natural gas and the piston container equipped with crude oil containing natural gas
Suction line connect, the outlet of this piston container is logical to be connected with the suction line of the integrating instrument of oil flow containing natural gas.
Described carbon dioxide and the crude oil minimum miscibility pressure test suite under the conditions of completely attaching to, including HTHP
Visualization device and tapping valve, the outlet of above-mentioned carbon dioxide flow integrating instrument and the integrating instrument of oil flow containing natural gas all with high
The suction line of temperature high pressure visable gasifying device connects, and the outlet of high-temperature and high-pressure visual device is connected with liquid inlet tee joint pipeline, enters
One of them outlet of liquid threeway is connected with tapping valve pipeline, and the outlet line of tapping valve connects gasometer and liquid meter
Device, another outlet line of liquid inlet tee joint connects carbon dioxide and minimum miscibility pressure test suite in tubule for the crude oil.
Described carbon dioxide and minimum miscibility pressure test suite in tubule for the crude oil, including tubule valve, back-up sand are thin
Pipe, tubule mixed phase monitor, tubule tapping valve, capillary pressure monitor and tubule back-pressure valve；The entrance of described tubule valve with
The outlet line of above-mentioned liquid inlet tee joint connects, and the outlet of tubule valve is connected with the suction line of back-up sand tubule, back-up sand tubule
The port of export is connected with the suction line of tubule mixed phase monitor, the outlet line connecting tee of tubule mixed phase monitor, threeway
One outlet line connects tubule tapping valve, and the outlet of tubule tapping valve is connected with the suction line of capillary pressure monitor, carefully
The outlet of pipe pressure monitor is connected with the suction line of tubule back-pressure valve, and the outlet line of tubule back-pressure valve connects gas dosing
Device and liquid meter；Another outlet line of threeway connects carbon dioxide and minimum mixed phase pressure in natural core for the crude oil
Power test suite.
Described carbon dioxide and minimum miscibility pressure test suite in natural core for the crude oil, including some tests are single
Unit, all test cells are connected in parallel, the different permeable layer that the quantity of test cell is divided by the anisotropism of actual reservoir
Number determine；Concrete each test cell, including rock core control valve, permeability are KxNatural core, rock core mixed phase prison
Survey device, rock core pressure monitor and back-pressure valve, wherein KxBe permeability be K1, K2, K3, K4…KnOne of, above-mentioned rock core control
The suction line connecting tee of valve processed, the outlet line of rock core control valve connects the injection end of natural core, adopting of natural core
Go out end to be connected with the suction line of rock core mixed phase monitor, the outlet of rock core mixed phase monitor and the entrance of rock core pressure monitor
Pipeline connects, and the outlet of rock core pressure monitor is connected with the suction line of rock core back-pressure valve, the outlet line of rock core back-pressure valve
Connect gasometer and liquid meter.
Above-mentioned tapping valve, tubule minimum miscibility pressure test suite, natural core minimum miscibility pressure test suite, gas
Meter and liquid meter are all laid in thermostat.
The present invention measures in the method in the optimal miscible pressure of carbon dioxide between injection-production well and mixed phase region, step one (1) institute
The test carbon dioxide stated and crude oil containing natural gas reach the minimum miscibility pressure P of mixed phase under the conditions of completely attaching to1, specifically survey
Method for testing is:
1st, by the feeding system in THE MINIMUM MISCIBLE PRESSURE device, minimum miscibility pressure test suite, gas are completely attached to
Fluid meter and liquid meter fit together；
2nd, the temperature of high-temperature and high-pressure visual device and thermostat is set；
3rd, the constant voltage constant speed pump of crude oil containing natural gas and carbon dioxide constant voltage constant speed pump are opened, to high-temperature and high-pressure visual device
Middle injecting carbon dioxide and crude oil containing natural gas, by containing containing Parameter Compensation of Natural Gas Flow Measuring and carbon dioxide flow integrating instrument record
The injection rate of natural gas crude oil and the injection rate of carbon dioxide, by the discharge of the waste liquid in tapping valve control test process；
4th, it is stirred continuously carbon dioxide and crude oil system containing natural gas by high-temperature and high-pressure visual device；
5th, carbon dioxide and crude oil system containing natural gas are observed by the visual observation probe of high-temperature and high-pressure visual device
Mixed phase situation, minimum miscibility pressure when determining that this system reaches mixed phase, i.e. obtain carbon dioxide and completely attaching to crude oil
Under the conditions of minimum miscibility pressure P1。
The present invention measures in the method in the optimal miscible pressure of carbon dioxide between injection-production well and mixed phase region, step one (2) institute
Test carbon dioxide and the crude oil containing natural gas stated reach the minimum miscibility pressure P of mixed phase in back-up sand tubule2, concrete test side
Method is:
1st, by the feeding system in THE MINIMUM MISCIBLE PRESSURE device, minimum miscibility pressure test suite, thin is completely attached to
Pipe minimum miscibility pressure test suite, gasometer and liquid meter assemble, and close tapping valve；
2nd, close tubule tapping valve, regulate tubule back-pressure valve, this system back pressure is set as P1；
3rd, open tubule tapping valve and tubule control valve, utilize tubule control valve to control enabling and closing, carefully of this device
Pipe mixed phase monitor is in order to monitor the mixed phase situation of the carbon dioxide in back-up sand tubule and crude oil system containing natural gas；Capillary pressure
System pressure during monitor monitoring system mixed phase；Tubule back-pressure valve controls the back pressure in this test process；Tubule discharge opeing
Valve controls the trend of fluid in test process and the discharge of waste liquid；
4th, the carbon dioxide of mixed phase will be reached in high-temperature and high-pressure visual device and crude oil system containing natural gas injects and fills out
In sand tubule；
5th, by tubule mixed phase monitor monitoring carbon dioxide and mixed phase in back-up sand tubule for the crude oil system containing natural gas
Situation, if system is not reaching to mixed phase, then the injection rate improving carbon dioxide i.e. changes carbon dioxide and crude oil containing natural gas
Injection ratio, until observing that in tubule mixed phase monitor carbon dioxide and crude oil system containing natural gas reach mixed phase；
Minimum miscibility pressure when the 6th, determining that carbon dioxide and crude oil system containing natural gas in these cases reach mixed phase,
I.e. obtain carbon dioxide and crude oil containing natural gas reaches the minimum miscibility pressure P of mixed phase under the conditions of pore throat amplification2。
The present invention measures in the method in the optimal miscible pressure of carbon dioxide between injection-production well and mixed phase region, step 2 (1) institute
Test carbon dioxide and the crude oil containing natural gas stated reach the minimum miscibility pressure of mixed phase in the natural core of different permeabilities
PnAnd the actual minimum miscibility pressure Pm of this reservoir, concrete method of testing is:
1st, the tapping valve in THE MINIMUM MISCIBLE PRESSURE device, tubule tapping valve are closed；
2nd, the plain heterogeneity situation according to one group of injection-production well of actual reservoir, determines the Permeability Distribution feelings of this actual reservoir
Condition, and then determine permeability K of the natural core of this reservoir1, K2, K3, K4…Kn；
3rd, testing permeability is K1The minimum miscibility pressure P of natural core3, close carbon dioxide with crude oil in natural rock
In minimum miscibility pressure test suite in the heart, permeability is respectively K2, K3, K4…KnTest cell rock core control valve；
1., closing tubule control valve, regulation permeability is K1Rock core back-pressure valve, this system back pressure is set as P2；
2., opening permeability is K1Rock core control valve, rock core control valve controls enabling and closing of this device, rock core mix
Phase monitor can monitor the mixed phase situation of the carbon dioxide in natural core and crude oil system containing natural gas；Rock core pressure monitoring
Device is in order to the system pressure during monitoring system mixed phase；Rock core back-pressure valve is in order to control the back pressure in this test process；
3. it is, K by reach the carbon dioxide of mixed phase in back-up sand tubule injecting permeability with crude oil system containing natural gas1's
In natural core；
4., by rock core mixed phase monitor monitoring carbon dioxide and mixed phase in natural core for the crude oil system containing natural gas
Situation, if system is not reaching to mixed phase, then the injection rate improving carbon dioxide i.e. changes carbon dioxide and crude oil containing natural gas
Injection ratio, until observing that in rock core mixed phase monitor carbon dioxide and crude oil system containing natural gas reach mixed phase；
Minimum mixed phase pressure when 5., determining that carbon dioxide and crude oil system containing natural gas in these cases reach mixed phase
Power, obtains the minimum miscibility pressure P of carbon dioxide and crude oil containing natural gas in actual natural core3；
4th, repeating step 3, test permeability is K2, K3, K4…KnThe minimum miscibility pressure P of natural core4、 P5、
P6…Pn；
5th, determining the actual minimum miscibility pressure Pm of this reservoir, Pm is P4、 P5、 P6... value maximum in Pn.
The present invention measures in the method in the optimal miscible pressure of carbon dioxide between injection-production well and mixed phase region, described in step 3
Between simulation well, mixed phase drives experiment, and concrete experimental technique is:
(1) mixed phase driving device between simulation well, the wherein order of connection of the natural core of variant permeability and reality are connected
The distribution situation of reservoir is consistent, length ratio also according to real well between distribution proportion；
(2) it is K by permeability1, K2, K3, K4…KnNatural core respectively this actual reservoir saturated former containing natural gas
Oil；
(3) minimum miscibility pressure of the variant permeable formation of this reservoir and the big of fracture pressure Po of this actual reservoir are compared
Little, determine optimal miscible pressure P of this reservoir, P is less than Po and is P4、 P5、 P6... the higher value in Pn；
(4) regulating back-pressure valve, the pressure arranging back-pressure valve is P；
(5) open carbon dioxide constant voltage constant speed pump, carry out carbon dioxide mixed phase and drive experiment, by observing the monitoring of rock core mixed phase
Device and pressure monitor determine the mixed phase situation of the natural core of variant permeability；
(6) the mixed phase situation of the natural core according to variant permeability is drawn carbon dioxide mixed phase and is driven distribution situation figure.
Beneficial effect:
Experimental provision of the present invention and method can overcome current high-temperature and high-pressure visual device and tubule real
Deviation produced by technology of testing actual test minimum miscibility pressure, apparatus and method can be grasped identical carbon dioxide and exist with crude oil
Can the different permeability zones of actual reservoir realize mixed phase, beneficially oil-gas field development worker grasp identical carbon dioxide with
Pressure needed for mixed phase in actual heterogeneous reservoir different pore structures for the crude oil system, i.e. can obtain the storage of actual heterogeneous body
The minimum miscibility pressure of layer；The present invention can simulate actual heterogeneous reservoir and carry out carbon dioxide mixed phase and drive, and according to experiment knot
Fruit is drawn carbon dioxide mixed phase and drives distribution situation figure, beneficially numerical simulation popularization and application.
Brief description
Fig. 1 is the structural representation of the device that multimode of the present invention measures carbon dioxide minimum miscibility pressure.
Fig. 2 is test minimum miscibility pressure P1Plant system drawing.
Fig. 3 is that in test experiments test, the camera in high-temperature and high-pressure visual device cylinder looks up measurement angle at lower 45 °.
Fig. 4 is that in experiment test, the camera in high-temperature and high-pressure visual device cylinder overlooks measurement angle at upper 135 °.
Fig. 5 is test minimum miscibility pressure P2Plant system drawing.
Fig. 6 is the plant system drawing of test minimum miscibility pressure Pn.
Fig. 7 is mixed phase driving device figure between simulation well.
Fig. 8 is the comparison diagram with fracture pressure for the minimum miscibility pressure of the variant permeable formation of reservoir in embodiment 1.
Fig. 9 is that in embodiment 1, carbon dioxide mixed phase drives pressure-plotting.
Figure 10 is that in embodiment 1, carbon dioxide mixed phase drives mixed phase distribution map.
Detailed description of the invention
Below in conjunction with the accompanying drawings the structure of apparatus of the present invention is formed and annexation is described further:
As shown in Figure 1: a kind of multimode measures the device of carbon dioxide minimum miscibility pressure, including feeding system, completely
Contact minimum miscibility pressure test suite, tubule minimum miscibility pressure test suite and natural core minimum miscibility pressure test group
Part, gasometer 26 and liquid meter 27, wherein:
Described feeding system, including carbon dioxide provisioning component and the assembly of oil supply containing natural gas.
Described carbon dioxide provisioning component, including carbon dioxide constant voltage constant speed pump the 1st, carbon dioxide holding tank 3 and titanium dioxide
Carbon flow integrator 5, the outlet of described carbon dioxide constant voltage constant speed pump 1 is connected with the suction line of carbon dioxide holding tank 3, and two
The outlet of carbonoxide storage tank 3 is connected with the suction line of carbon dioxide flow integrating instrument 5, carbon dioxide flow integrating instrument 5
It act as monitoring the injection rate of carbon dioxide.
The described assembly of oil supply containing natural gas, including constant voltage constant speed pump the 2nd, the piston container 4 of crude oil containing natural gas and contain sky
Right gas crude oil flow integrator 6, the outlet of the described constant voltage constant speed pump of crude oil containing natural gas 2 and the piston equipped with crude oil containing natural gas
The suction line of container 4 connects, and the outlet of this piston container 4 is connected with the suction line of the integrating instrument of oil flow containing natural gas 6,
The injection rate acting as monitoring crude oil containing natural gas of the integrating instrument of oil flow containing natural gas 6.
Described carbon dioxide and the crude oil minimum miscibility pressure test suite under the conditions of completely attaching to, including HTHP
Visualization device 7 and tapping valve 9, the outlet of carbon dioxide flow integrating instrument 5 and the integrating instrument of oil flow containing natural gas 6 all with high
The suction line of temperature high pressure visable gasifying device 7 connects, and the outlet of high-temperature and high-pressure visual device 7 is with liquid inlet tee joint 29 pipeline even
Connecing, one of them outlet of liquid inlet tee joint 29 is connected with tapping valve 9 pipeline, and the outlet line of tapping valve 9 connects gasometer
26 and liquid meter 27, another outlet line of liquid inlet tee joint 29 connects carbon dioxide to be mixed with minimum in tubule for the crude oil
Phase pressure test suite.
Described carbon dioxide and minimum miscibility pressure test suite in tubule for the crude oil, including the 10th, the back-up sand of tubule valve
Tubule the 11st, tubule mixed phase monitor the 12nd, tubule tapping valve the 13rd, capillary pressure monitor 14 and tubule back-pressure valve 15；Above-mentioned tubule
The entrance of valve 10 is connected with the outlet line of liquid inlet tee joint 29, the suction line of the outlet of tubule valve 10 and back-up sand tubule 11
Connecting, the port of export of back-up sand tubule 11 is connected with the suction line of tubule mixed phase monitor 12, going out of tubule mixed phase monitor 12
Mouthful pipeline connecting tee 30, an outlet line of threeway 30 connects tubule tapping valve 13, the outlet of tubule tapping valve 13 with thin
The suction line of pipe pressure monitor 14 connects, and the outlet of capillary pressure monitor 14 connects with the suction line of tubule back-pressure valve 15
Connecing, the outlet line of tubule back-pressure valve 15 connects gasometer 26 and liquid meter 27；Another outlet of threeway 30
Line connects carbon dioxide and minimum miscibility pressure test suite in natural core for the crude oil.
Described carbon dioxide and minimum miscibility pressure test suite in natural core for the crude oil, including some tests are single
Unit, all test cells are in parallel, and the quantity of test cell is individual by the different permeable layer of the anisotropism division of actual reservoir
Number determines, with specific reference to the plain heterogeneity situation of one group of injection-production well of actual reservoir, determines the Permeability Distribution of this actual reservoir
Situation, and then determine permeability K of the natural core of this reservoir1, K2, K3, K4…Kn, KnIn n be test cell number.
Concrete each test cell, including rock core control valve the 16th, permeability KxNatural core the 17th, rock core mixed phase monitoring
Device the 18th, rock core pressure monitor 19 and rock core back-pressure valve 20, wherein KxBe permeability be K1, K2, K3, K4…KnOne of, on
State the suction line connecting tee 30 of rock core control valve 16, the injection end pipeline of the outlet of rock core control valve 16 and natural core 17
Connecting, the production end of natural core 17 is connected with the suction line of rock core mixed phase monitor 18, going out of rock core mixed phase monitor 18
Mouth is connected with the suction line of rock core pressure monitor 19, the entrance of the outlet of rock core pressure monitor 19 and rock core back-pressure valve 20
Pipeline connects, and the outlet line of rock core back-pressure valve 20 connects gasometer 26 and liquid meter 27.
Minimum miscibility pressure test suite in tubule of above-mentioned tapping valve the 9th, carbon dioxide and crude oil, carbon dioxide with
Minimum miscibility pressure test suite in natural core for the crude oil, gasometer 26 and liquid meter 27 are all laid in constant temperature
In device 8.
The method illustrating below in conjunction with specific example to use this covering device to measure the optimal miscible pressure of actual reservoir, goes forward side by side
One step simulation research mixed phase drives the actual state between well, draws carbon dioxide mixed phase and drives regional distribution chart
Embodiment 1
The crude oil containing natural gas that the present embodiment is used, under the conditions of temperature is 45 DEG C, viscosity of crude is 9.8mPa s, should
The fracture pressure of reservoir is 29.5MPa, and the permeability number between a certain injection-production well of this reservoir is 5, respectively K3: 2000 × 10-3μm2, K4: 1800 × 10-3μm2, K5: 1500 × 10-3μm2, K6: 1000 × 10-3μm2, K7: 800 × 10-3μm2；
Tubule mixed phase monitor, capillary pressure monitor, rock core mixed phase monitor and the rock core pressure monitor being used
The model being the production of Shanghai Micronics Inc. is the gas chromatograph of GC9310；Add reagent flow integrating instrument, carbon dioxide stream
Amount integrating instrument is the XSFT-LCD Chinese type flow integrator that Sisam SA produces；The constant voltage constant speed pump being used is Hai'an
The HSB-1 type high pressure constant speed and constant pressure pump that oil scientific research Instrument Ltd. of county produces；High-temperature and high-pressure visual device, this equipment by
French company produces, and model is 240/1000FV.
1st, the minimum miscibility pressure P of high-temperature and high-pressure visual device to test carbon dioxide and crude oil containing natural gas is used1
Test minimum miscibility pressure P1, only need to use the part system in apparatus of the present invention, specifically as shown in Figure 2.
Concrete testing procedure is:
(1) temperature of high-temperature and high-pressure visual device 7 and thermostat 8 is set as 45 DEG C；
(2) controlled the discharge of the waste liquid in test process by tapping valve 9；
(3) the constant voltage constant speed pump of crude oil containing natural gas 2 and carbon dioxide constant voltage constant speed pump 1 are opened, to high-temperature and high-pressure visual
Device 7 injects the carbon dioxide that ratio is 4:5 and crude oil containing natural gas, by containing Parameter Compensation of Natural Gas Flow Measuring 6 and titanium dioxide
The injection rate of carbon flow integrator 5 record crude oil containing natural gas and the injection rate of carbon dioxide, respectively 40ml and 50ml；
(4) high-temperature and high-pressure visual device 7 is stirred continuously carbon dioxide and crude oil system containing natural gas；
(5) by the visual observation of high-temperature and high-pressure visual device 7 probe (computer screen show) observe carbon dioxide and
The mixed phase situation of crude oil system containing natural gas, choice experiment measurement angle is as shown in Figures 3 and 4；
Observe carbon dioxide and crude oil system containing natural gas, so that it is determined that the minimum miscibility pressure of the two.Carbon dioxide with
During injecting, the two is separately to crude oil containing natural gas, there is therebetween obvious boundary, when this carbon dioxide
When reaching mixed phase with crude oil system containing natural gas, boundary between the two disappears, so that it is determined that when this system reaches mixed phase
Little miscible pressure is 15.6MPa, i.e. obtains carbon dioxide and minimum miscibility pressure P under the conditions of being fully contacted for the crude oil1For
15.6MPa。
2nd, high-temperature and high-pressure visual device and carbon dioxide and minimum miscibility pressure test group in tubule for the crude oil are used
Part tests minimum miscibility pressure P2
Test above-mentioned minimum miscibility pressure P2, only need to use the part system in apparatus of the present invention, specifically as shown in Figure 5.
Concrete testing procedure is:
(1) close tubule tapping valve 13, regulate tubule back-pressure valve 15, this system back pressure is set as 15.6MPa；
(2) tubule control valve 10 is opened；
(3) injecting in back-up sand tubule 11 carbon dioxide with crude oil system containing natural gas, carbon dioxide is former with containing natural gas
The injection ratio of oil is 4:5；
(4) carbon dioxide and crude oil system containing natural gas are monitored in back-up sand tubule 11 by tubule mixed phase monitor 12
Mixed phase situation, discovery system is not reaching to mixed phase, then the injection rate improving carbon dioxide i.e. changes carbon dioxide and containing natural gas
The injection ratio of crude oil, observes carbon dioxide and containing sky when the injection ratio of carbon dioxide and crude oil containing natural gas is 5:5
Right gas crude oil system reaches mixed phase；
(5) minimum miscibility pressure when determining that carbon dioxide and crude oil system containing natural gas in these cases reach mixed phase
For 18.7MPa, i.e. obtain carbon dioxide and crude oil containing natural gas reaches the minimum miscibility pressure of mixed phase under the conditions of pore throat amplification
P2For 18.7MPa.
3rd, high-temperature and high-pressure visual device, carbon dioxide and minimum miscibility pressure test suite in tubule for the crude oil are used
And complete mixed phase in the minimum miscibility pressure test suite test natural core that carbon dioxide and crude oil are in natural core
Minimum miscibility pressure Pm；
(1) the plain heterogeneity situation according to one group of injection-production well of actual reservoir, determines the infiltration of the natural core of this reservoir
Rate is 2000 × 10-3μm2, 1800 × 10-3μm2, 1500 × 10-3μm2, 1000 × 10-3μm2, 800 × 10-3μm2；
(2) testing permeability is 2000 × 10-3μm2The minimum miscibility pressure of natural core；Test described minimum mixed phase
Pressure P3, only need to use the part system in apparatus of the present invention, specifically as shown in Figure 6；
1) close tubule control valve 10, regulate rock core back-pressure valve 20, this system back pressure is set as 18.7MPa；
2) rock core control valve 16 is opened；
3) carbon dioxide and crude oil system containing natural gas are injected in back-up sand tubule 11, carbon dioxide and crude oil containing natural gas
Injection ratio be 4:5；
4) carbon dioxide and crude oil system containing natural gas are monitored in natural core 17 by rock core mixed phase monitor 12
Mixed phase situation, if system is not reaching to mixed phase, then improving the injection rate of carbon dioxide, i.e. to change carbon dioxide former with containing natural gas
The injection ratio of oil, observe when carbon dioxide is 6:5 with the injection ratio of crude oil containing natural gas carbon dioxide with containing natural
Gas crude oil system reaches mixed phase；
5) minimum miscibility pressure when determining that carbon dioxide and crude oil system containing natural gas in these cases reach mixed phase
21.3MPa, obtains the minimum miscibility pressure P of carbon dioxide and crude oil containing natural gas in actual natural core3For 21.3MPa；
(3) repeating (1), (2) in step 4, test permeability is 1800 × 10-3μm2, 1500 × 10-3μm2, 1000 ×
10-3μm2, 800 × 10-3μm2The corresponding minimum miscibility pressure P of natural core4It is 23.4 MPa, P5It is 25.7 MPa, P6
It is 28.4 MPa, P7It is 31.7 Mpa；
(4) the actual minimum miscibility pressure Pm of this reservoir, Pm is 31.7 MPa.
4th, between according to injection-production well, Permeability Distribution analog study mixed phase drives the distribution situation between well
(1) it is 2000 × 10 by permeability-3μm2, 1800 × 10-3μm2, 1500 × 10-3μm2, 1000 × 10-3μm2, 800
×10-3μm2The crude oil containing natural gas of natural core respectively this actual reservoir saturated；
(2) as Fig. 7 connects mixed phase driving device figure between simulation well, in figure: the 32nd, permeability is 2000 × 10-3μm2Natural rock
The heart；33rd, permeability is 2000 × 10-3μm2The mixed phase monitor of natural core；34th, permeability is 2000 × 10-3μm2Sky
The pressure monitor of right rock core；35th, permeability is 1800 × 10-3μm2Natural core；36th, permeability is 1800 × 10-3μm2
The mixed phase monitor of natural core；37th, permeability is 1800 × 10-3μm2The pressure monitor of natural core；38th, permeate
Rate is respectively 1500 × 10-3μm2, 1000 × 10-3μm2, 800 × 10-3μm2Natural core and corresponding mixed phase monitor
And pressure monitor；39th, back-pressure valve.Figure requires the order of connection and the actual reservoir of the natural core of variant permeability
Distribution situation is consistent, length ratio also according to real well between distribution proportion；
(3) size of the minimum miscibility pressure of the variant permeable formation of this reservoir and the fracture pressure of this actual reservoir is compared,
As shown in Figure 8, optimal miscible pressure P determining this reservoir is 28.4 MPa；
(4) regulating back-pressure valve, the pressure arranging back-pressure valve is 28.4 MPa；
(5) open carbon dioxide constant voltage constant speed pump, carry out carbon dioxide mixed phase and drive experiment, by observing the monitoring of rock core mixed phase
Device and pressure monitor determine the mixed phase situation of the natural core of variant permeability；
(6) permeability is 2000 × 10-3μm2Natural core mixed phase monitor in observe that system has reached mixed phase,
The pressure that the pressure monitor of the natural core that permeability is shows is 23.1MPa, also illustrates that this system has reached mixed phase；Infiltration
Rate is 1800 × 10-3μm2Natural core mixed phase monitor in observe that system has reached mixed phase, the natural rock that permeability is
The pressure that the pressure monitor of the heart shows is 25.6MPa, also illustrates that this system has reached mixed phase；Permeability is 1500 × 10-3μm2
Natural core mixed phase monitor in observe that system has reached mixed phase, permeability is 1500 × 10-3μm2Natural core
The pressure that pressure monitor shows is 27.5MPa, also illustrates that this system has reached mixed phase；Permeability is 1000 × 10-3μm2Sky
Observing that system has reached mixed phase in the mixed phase monitor of right rock core, permeability is 1000 × 10-3μm2The pressure of natural core
The pressure that monitor shows is 29.4MPa, also illustrates that this system has reached mixed phase；Permeability is 800 × 10-3μm2Natural rock
System of observing in the mixed phase monitor of the heart is for reaching mixed phase but close to mixed phase, permeability is 800 × 10-3μm2Natural core
The pressure that shows of pressure monitor be 30.1MPa, and its minimum miscibility pressure is 31.7MPa, also illustrates that this system not yet reaches
To mixed phase but close to mixed phase.
5th, the mixed phase situation of the natural core according to variant permeability is drawn carbon dioxide mixed phase and is driven distribution situation figure
1) pressure-plotting is drawn according to experimental result, as shown in Figure 9；
In figure, from left to right pressure becomes big, and figure intermediate data is the minimum miscibility pressure in this region；
2) the mixed phase situation that the mixed phase monitor according to pressure distribution Fig. 9 and reality monitors is drawn carbon dioxide mixed phase and is driven
Distribution map, as shown in Figure 10.
Beating hatched parts in figure is that carbon dioxide is not up to mixed phase region with crude oil containing natural gas, i.e. permeability is 800
×10-3μm2Region system be not up to mixed phase.Figure 10 can be found out injection well permeability band different from extraction well clearly
The mixed phase situation of carbon dioxide and crude oil containing natural gas.
Claims (5)
1. measure the method in the optimal miscible pressure of carbon dioxide and mixed phase region between injection-production well, comprise the concrete steps that:
First, make carbon dioxide gradually contact under the conditions of different pore throats with crude oil containing natural gas to reach mixed phase and test in different holes
Minimum miscibility pressure under the conditions of larynx
(1) test carbon dioxide and crude oil containing natural gas reaches the minimum miscibility pressure P of mixed phase under the conditions of completely attaching to1；
(2) by above-mentioned minimum miscibility pressure P1As back pressure, test carbon dioxide and crude oil containing natural gas are hole in back-up sand tubule
Larynx reaches the minimum miscibility pressure P of mixed phase in the case of amplification2；
2nd, inject well to the plane heterogeneity between extraction well according to actual reservoir, test this reservoir in difference permeabilities
Natural core pore throat under the actual minimum miscibility pressure Pm of carbon dioxide and crude oil containing natural gas, obtain the optimal of this reservoir
Miscible pressure P
(1) by P2As back pressure, test carbon dioxide reaches mixed phase from crude oil containing natural gas in the natural core of different permeabilities
Minimum miscibility pressure, obtain carbon dioxide and crude oil i.e. contact in actual small pore throat basic fully in the case of titanium dioxide
Carbon and the minimum miscibility pressure P of crude oil containing natural gas3、 P4、 P5、 P6... Pn, n are the individual of the different permeabilities of actual reservoir
Number, P3、 P4、 P5、 P6... numerical value Pm maximum in Pn is the actual minimum miscibility pressure of reservoir；
(2) P is compared3、 P4、 P5、 P6... fracture pressure Po of Pn and corresponding actual reservoir, determine the optimal mixed phase of this reservoir
Pressure P, P are less than Po and are P4、 P5、 P6... the maximum in Pn；
3rd, it using P as back pressure, is simulated mixed phase between well and drives experiment, draw carbon dioxide mixed phase and drive regional distribution chart.
2. the method measuring the optimal miscible pressure of carbon dioxide and mixed phase region between injection-production well according to claim 1, its
It is characterised by: the test carbon dioxide described in step one (1) reaches mixed phase with crude oil containing natural gas under the conditions of completely attaching to
Minimum miscibility pressure P1, concrete method of testing is:
1st, by the feeding system in THE MINIMUM MISCIBLE PRESSURE device, minimum miscibility pressure test suite, aerometer are completely attached to
Measuring device and liquid meter fit together；
2nd, the temperature of high-temperature and high-pressure visual device and thermostat is set；
3rd, open the constant voltage constant speed pump of crude oil containing natural gas and carbon dioxide constant voltage constant speed pump, note in high-temperature and high-pressure visual device
Enter carbon dioxide and crude oil containing natural gas, by containing natural containing Parameter Compensation of Natural Gas Flow Measuring and carbon dioxide flow integrating instrument record
The injection rate of gas crude oil and the injection rate of carbon dioxide, by the discharge of the waste liquid in tapping valve control test process；
4th, it is stirred continuously carbon dioxide and crude oil system containing natural gas by high-temperature and high-pressure visual device；
5th, by the visual observation probe observation carbon dioxide of high-temperature and high-pressure visual device and mixing of crude oil system containing natural gas
Phase situation, minimum miscibility pressure when determining that this system reaches mixed phase, i.e. obtain carbon dioxide with crude oil in full contact condition
Under minimum miscibility pressure P1。
3. the method measuring the optimal miscible pressure of carbon dioxide and mixed phase region between injection-production well according to claim 1, its
It is characterised by: the test carbon dioxide described in step one (2) and crude oil containing natural gas reach the minimum of mixed phase in back-up sand tubule
Miscible pressure P2, concrete method of testing is:
1st, by the feeding system in THE MINIMUM MISCIBLE PRESSURE device, minimum miscibility pressure test suite, tubule are completely attached to
Little miscible pressure test suite, gasometer and liquid meter assemble, and close tapping valve；
2nd, close tubule tapping valve, regulate tubule back-pressure valve, this system back pressure is set as P1；
3rd, opening tubule tapping valve and tubule control valve, utilizing tubule control valve to control enabling and closing of this device, tubule mixes
Phase monitor is in order to monitor the mixed phase situation of the carbon dioxide in back-up sand tubule and crude oil system containing natural gas；Capillary pressure is monitored
System pressure during device monitoring system mixed phase；Tubule back-pressure valve controls the back pressure in this test process；Tubule tapping valve control
The discharge of the trend of fluid and waste liquid in test process processed；
4th, by high-temperature and high-pressure visual device, reach the carbon dioxide of mixed phase and crude oil system containing natural gas to inject back-up sand thin
Guan Zhong；
5th, by tubule mixed phase monitor monitoring carbon dioxide and mixed phase situation in back-up sand tubule for the crude oil system containing natural gas,
If system is not reaching to mixed phase, then the injection rate improving carbon dioxide i.e. changes the injection ratio of carbon dioxide and crude oil containing natural gas
Example, until observing that in tubule mixed phase monitor carbon dioxide and crude oil system containing natural gas reach mixed phase；
Minimum miscibility pressure when the 6th, determining that carbon dioxide and crude oil system containing natural gas in these cases reach mixed phase, to obtain final product
The minimum miscibility pressure P of mixed phase is reached to carbon dioxide and crude oil containing natural gas under the conditions of pore throat amplification2。
4. the method measuring the optimal miscible pressure of carbon dioxide and mixed phase region between injection-production well according to claim 1, its
It is characterised by: the test carbon dioxide described in step 2 (1) reaches in the natural core of different permeabilities from crude oil containing natural gas
Minimum miscibility pressure P to mixed phasenAnd the actual minimum miscibility pressure Pm of this reservoir, concrete method of testing is:
1st, by the feeding system in THE MINIMUM MISCIBLE PRESSURE device, minimum miscibility pressure test suite, tubule are completely attached to
Minimum miscibility pressure test suite in natural core of little miscible pressure test suite, carbon dioxide and crude oil, gas dosing
Device and liquid meter assemble, and close tapping valve and tubule tapping valve；
2nd, the plain heterogeneity situation according to one group of injection-production well of actual reservoir, determines the Permeability Distribution situation of this actual reservoir,
And then determine permeability K of the natural core of this reservoir1, K2, K3, K4…Kn；
3rd, testing permeability is K1The minimum miscibility pressure P of natural core3, close carbon dioxide and crude oil in natural core
Minimum miscibility pressure test suite in permeability be respectively K2, K3, K4…KnTest cell rock core control valve；
1., closing tubule control valve, regulation permeability is K1Rock core back-pressure valve, this system back pressure is set as P2；
2., opening permeability is K1Rock core control valve, rock core control valve controls enabling and closing of this device, and rock core mixed phase is supervised
Survey device can monitor the mixed phase situation of the carbon dioxide in natural core and crude oil system containing natural gas；Rock core pressure monitor is used
With the system pressure during monitoring system mixed phase；Rock core back-pressure valve is in order to control the back pressure in this test process；
3. it is, K by reach the carbon dioxide of mixed phase in back-up sand tubule injecting permeability with crude oil system containing natural gas1Natural
In rock core；
4., by rock core mixed phase monitor monitoring carbon dioxide and mixed phase feelings in natural core for the crude oil system containing natural gas
Condition, if system is not reaching to mixed phase, then the injection rate improving carbon dioxide i.e. changes the note of carbon dioxide and crude oil containing natural gas
Enter ratio, until observing that in rock core mixed phase monitor carbon dioxide and crude oil system containing natural gas reach mixed phase；
Minimum miscibility pressure when 5., determining that carbon dioxide and crude oil system containing natural gas in these cases reach mixed phase,
Minimum miscibility pressure P to carbon dioxide in actual natural core and crude oil containing natural gas3；
4th, repeating step 3, test permeability is K2, K3, K4…KnThe minimum miscibility pressure P of natural core4、 P5、 P6…Pn；
5th, determining the actual minimum miscibility pressure Pm of this reservoir, Pm is P4、 P5、 P6... value maximum in Pn.
5. the method measuring the optimal miscible pressure of carbon dioxide and mixed phase region between injection-production well according to claim 1, its
Being characterised by: between the simulation well described in step 3, mixed phase drives experiment, concrete experimental technique is:
(1) mixed phase driving device between simulation well, the wherein order of connection of the natural core of variant permeability and actual reservoir are connected
Distribution situation consistent, length ratio also according to real well between distribution proportion；
(2) it is K by permeability1, K2, K3, K4…KnThe crude oil containing natural gas of natural core respectively this actual reservoir saturated；
(3) size of the minimum miscibility pressure of the variant permeable formation of this reservoir and fracture pressure Po of this actual reservoir is compared, really
Optimal miscible pressure P of this reservoir fixed, P is less than Po and is P4、 P5、 P6... the higher value in Pn；
(4) regulating back-pressure valve, the pressure arranging back-pressure valve is P；
(5) open carbon dioxide constant voltage constant speed pump, carry out carbon dioxide mixed phase and drive experiment, by observe rock core mixed phase monitor and
Pressure monitor determines the mixed phase situation of the natural core of variant permeability；
(6) the mixed phase situation of the natural core according to variant permeability is drawn carbon dioxide mixed phase and is driven distribution situation figure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510655367.1A CN105258840B (en) | 2015-11-12 | 2015-11-12 | A kind of method measuring the optimal miscible pressure of carbon dioxide between injection-production well and mixed phase region |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510655367.1A CN105258840B (en) | 2015-11-12 | 2015-11-12 | A kind of method measuring the optimal miscible pressure of carbon dioxide between injection-production well and mixed phase region |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105258840A CN105258840A (en) | 2016-01-20 |
| CN105258840B true CN105258840B (en) | 2016-11-09 |
Family
ID=55098618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510655367.1A Active CN105258840B (en) | 2015-11-12 | 2015-11-12 | A kind of method measuring the optimal miscible pressure of carbon dioxide between injection-production well and mixed phase region |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105258840B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106285582A (en) * | 2016-09-18 | 2017-01-04 | 广东石油化工学院 | Note CO2oil reservoirs CO2mixed phase region decision method |
| CN106884635B (en) * | 2017-03-03 | 2020-08-11 | 中国石油大学(北京) | Low and ultra-low permeability reservoir CO2Method for measuring minimum flooding miscible pressure |
| CN107238463B (en) * | 2017-05-24 | 2019-12-31 | 西南石油大学 | Device and method for testing minimum miscible pressure of gas after multistage contact |
| CN111781104A (en) * | 2019-04-04 | 2020-10-16 | 中国石油化工股份有限公司 | Test model of minimum miscible pressure and manufacturing method thereof |
| CN111364985B (en) * | 2020-05-15 | 2022-03-11 | 西南石油大学 | Thin tube experiment device with pressure covering function and using method |
| CN111537549B (en) * | 2020-06-08 | 2021-04-13 | 北京大学 | Carbon dioxide flooding, storing and fracturing device with continuously-changed phase state and experimental method |
| CN115822532B (en) * | 2022-11-17 | 2024-01-30 | 东北石油大学 | Method, device, equipment and medium for determining minimum miscible pressure of carbon dioxide-crude oil |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798499A (en) * | 2012-08-15 | 2012-11-28 | 中国石油天然气股份有限公司 | Multi-tube type minimum mixed-phase pressure measuring method and device |
| CN103900755A (en) * | 2014-03-14 | 2014-07-02 | 大连理工大学 | Device and method for measuring minimum miscibility pressure of oil and gas through CT |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56119828A (en) * | 1980-02-28 | 1981-09-19 | Mitsubishi Heavy Ind Ltd | Measuring apparatus for concentration of dust |
| JPS5823885B2 (en) * | 1980-07-03 | 1983-05-18 | 三菱重工業株式会社 | Solid-gas multiphase fluid sampling device |
-
2015
- 2015-11-12 CN CN201510655367.1A patent/CN105258840B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798499A (en) * | 2012-08-15 | 2012-11-28 | 中国石油天然气股份有限公司 | Multi-tube type minimum mixed-phase pressure measuring method and device |
| CN103900755A (en) * | 2014-03-14 | 2014-07-02 | 大连理工大学 | Device and method for measuring minimum miscibility pressure of oil and gas through CT |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105258840A (en) | 2016-01-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105258840B (en) | A kind of method measuring the optimal miscible pressure of carbon dioxide between injection-production well and mixed phase region | |
| CN105181222B (en) | A kind of multimode measures the device of carbon dioxide minimum miscibility pressure | |
| CN103048431B (en) | Hydrofracture propping agent settlement and permeability testing device | |
| CN103969160B (en) | The dynamic leak-off detection system of High Temperature High Pressure foam liquid and detection method thereof | |
| CN106644871A (en) | Evaluating method of oil and gas reservoir seepage by supercritical carbon dioxide fracturing fluid and method thereof | |
| CN108333098A (en) | Shale gas reservoir micro-fractures high-temperature and high-pressure visual air water two phase fluid flow experimental provision | |
| CN106525655B (en) | A kind of gas-liquid injection imitation oil displacement experiment and fluid property measurement device and method | |
| CN102353750B (en) | Crude oil low-temperature oxidation experimental device for light oil reservoir air-injection oil extraction | |
| CN104406768B (en) | Fracture flow simulation experiment device and method for fiber blend support agent | |
| CN101858848B (en) | Rock high-pressure permeability testing method and device based on rock displacement and hole-pressure | |
| CN109975177A (en) | A kind of simulation test device and method of horizontal grouting mouth slip casting spreading morphology | |
| CN103674593B (en) | A kind of device and method for simulating the flood pot test of low permeability reservoir pressure break straight well | |
| CN105134149B (en) | A kind of change carbon dioxide between injection-production well and drive the apparatus and method of situation | |
| CN108266166A (en) | A kind of fractured reservoir fluctuates recover the oil microcosmic jet stream anatonosis mechanism evaluation experimental device and method | |
| CN103940715A (en) | Simulating experiment method of rock natural seepage ability | |
| CN108267391A (en) | A kind of experimental provision and method of the evaluation of machine-pumped oil well underground gas-tight tool | |
| CN102654045A (en) | Top air injection gravity-assisted flooding oil-extraction one-dimensional physical simulation experimental system | |
| CN108287123A (en) | A kind of measurement CO2The visualization device and method of solid-carrying performance under the conditions of fracturing fluid high pressure dynamic filtration | |
| Li et al. | Experimental study on dynamic filtration behavior of liquid CO2 in tight sandstone | |
| CN104391079B (en) | Dynamic test method of reservoir protection effect of oil and gas well operating fluid | |
| KR101215468B1 (en) | Apparatus and method for measuring permeability of sample using carbon dioxide | |
| CN111720101B (en) | Simulation system and simulation method for shale gas well fracturing flowback | |
| CN201517369U (en) | Multi-angle horizontal branch well natural gas extraction simulator | |
| CN202158980U (en) | Clean oil reservoir air oil production low-temperature oxidation experimental device | |
| CN207586208U (en) | Nearly well band temporarily blocks up simulating lab test device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200721 Address after: 423, floor 4, block a, Xinhua future city building, No. 175, Litang Road, Changping District, Beijing 102200 Patentee after: Li Qiannan Address before: 163318 No. 199, development road, hi tech Development Zone, Heilongjiang, Daqing Patentee before: NORTHEAST PETROLEUM University |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201222 Address after: 257000 west side of Fusheng street, Dongji Town, Kenli District, Dongying City, Shandong Province Patentee after: DONGYING HEHUI PETROLEUM TECHNOLOGY Co.,Ltd. Address before: 102200 423, 4 / F, block a, Xinhua future city building, 175 Litang Road, Changping District, Beijing Patentee before: Li Qiannan |
|
| TR01 | Transfer of patent right | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20160120 Assignee: Dongying Zhike Petroleum Technology Development Co.,Ltd. Assignor: DONGYING HEHUI PETROLEUM TECHNOLOGY CO.,LTD. Contract record no.: X2022980019396 Denomination of invention: A method for determining the optimum miscible pressure and miscible area of carbon dioxide between injection and production wells Granted publication date: 20161109 License type: Exclusive License Record date: 20221024 |
|
| EE01 | Entry into force of recordation of patent licensing contract |