CN116136462A - Sampler and in-situ combustion physical simulation device - Google Patents
Sampler and in-situ combustion physical simulation device Download PDFInfo
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- CN116136462A CN116136462A CN202111362628.2A CN202111362628A CN116136462A CN 116136462 A CN116136462 A CN 116136462A CN 202111362628 A CN202111362628 A CN 202111362628A CN 116136462 A CN116136462 A CN 116136462A
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 55
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 53
- 238000004088 simulation Methods 0.000 title claims abstract description 40
- 238000005070 sampling Methods 0.000 claims abstract description 230
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 238000007789 sealing Methods 0.000 claims description 52
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 6
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 6
- 241001330002 Bambuseae Species 0.000 claims description 6
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 6
- 239000011425 bamboo Substances 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 7
- 238000011160 research Methods 0.000 abstract description 7
- 230000001629 suppression Effects 0.000 abstract description 7
- 239000003921 oil Substances 0.000 description 31
- 239000000203 mixture Substances 0.000 description 12
- 239000010779 crude oil Substances 0.000 description 8
- 238000000605 extraction Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 7
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005189 flocculation Methods 0.000 description 3
- 230000016615 flocculation Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000010795 Steam Flooding Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000012613 in situ experiment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000004227 thermal cracking Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/12—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using combustion
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
- G01N2001/1418—Depression, aspiration
- G01N2001/1427—Positive displacement, piston, peristaltic
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Molecular Biology (AREA)
- Hydrology & Water Resources (AREA)
- Biomedical Technology (AREA)
- Combustion & Propulsion (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a sampler and an in-situ combustion physical simulation device, which belong to the technical field of in-situ combustion sampling and are suitable for sampling oil, gas and water in different areas in the in-situ combustion physical simulation device. The sampling tube is axially provided with a sampling cavity, one axial end of the sampling cavity is provided with an opening, the sampling tube is radially provided with a sampling hole, and the sampling hole of the sampling tube is operatively communicated with the cavity bottom of the sampling cavity; one end of the plug rod can be inserted in the sampling cavity of the sampling tube in a sliding manner along the length direction of the sampling tube, and the other end of the plug rod is arranged outside the sampling tube. The sampler provided by the invention can ensure that the sampling process is smoothly carried out, avoid the problem of fire suppression, ensure that in-situ combustion is smoothly propelled, and ensure that the sampled product is close to the actual pressure of the oil-gas-water mixed gas in the physical simulation device, thereby improving the research accuracy.
Description
Technical Field
The invention belongs to the technical field of in-situ combustion sampling, and particularly relates to a sampler and an in-situ combustion physical simulation device.
Background
The in-situ combustion is a method for recovering thick oil or super thick oil by using electricity, chemistry and other methods to make oil layer reach ignition point of crude oil, continuously injecting air to maintain stable combustion of oil layer, and by means of artificial ignition of crude oil, partial crude oil is combusted in situ, and the combustion front edge is utilized to produce very high temperature, so that interstitial water in stratum and light components in crude oil are evaporated in situ, and the products of crude oil combustion carbon dioxide and water vapor are contacted with 'cold crude oil', so as to form a displacement front edge similar to steam flooding, flux miscible flooding and carbon dioxide flooding.
In the in-situ combustion process, six zones of a burnt zone, a fire wire, a coking zone, a condensation zone, an oil wall and a residual oil zone are sequentially formed at an injection end and a production end, and in different zones, crude oil undergoes low-temperature oxidation, high-temperature oxidation and thick oil thermal cracking reactions, the combustion process and mechanism of the in-situ combustion are extremely complex, and in-situ experiments are generally carried out after simulation experiments are carried out in a laboratory.
The laboratory is required to carry out oil gas water sampling analysis when carrying out simulation research on in-situ combustion, and at present, a pipeline is adopted to take an oil gas water sample at a production end, and then detection analysis is carried out after oil gas water sample oil gas water separation. However, such pipe samplers are unable to sample the various areas of the in-situ combustion, and are prone to fire suppression problems.
Disclosure of Invention
In order to solve the technical problems, the invention provides the sampler and the in-situ combustion physical simulation device, which can ensure that the sampling process is smoothly carried out, avoid the problem of fire suppression, ensure that the in-situ combustion is smoothly propelled, and ensure that the sampled product is close to the actual pressure of the oil-gas-water mixed gas in the physical simulation device, thereby improving the research accuracy.
The technical scheme of the invention is as follows:
in one aspect, the present invention provides a sampler suitable for sampling oil, gas and water in different areas of a physical simulation device of in-situ combustion, the sampler comprising:
the sampling device comprises a sampling tube, a sampling cavity and a sampling pipe, wherein the sampling tube is provided with an opening sampling cavity, and a sampling hole of the sampling tube is operatively communicated with the cavity bottom of the sampling cavity;
the plug rod, one end of plug rod can be followed the length direction of sampling section of thick bamboo is sealed to be inserted with sliding and is established the sample intracavity of sampling section of thick bamboo, the other end of plug rod sets up the sampling section of thick bamboo is outer.
Further, the plug rod is sleeved with a first sealing ring in a sliding manner, and the outer side of the first sealing ring is fixedly propped in the sampling tube.
Further, the first sealing ring is made of graphite.
Further, the first sealing rings are arranged in a plurality, and the first sealing rings are sleeved outside the plug rod in a sliding mode along the axial direction of the plug rod in sequence.
Further, the two sides of the first sealing ring are respectively propped against with the second sealing rings, the plug rod is inserted into the two second sealing rings in a sliding manner, and the outer sides of the two second sealing rings are fixedly propped against in the sampling cylinder.
Further, the two second sealing rings are made of red copper.
Further, a bulge is arranged in the sampling tube, the second sealing ring close to the cavity bottom of the sampling tube is propped against the bulge of the sampling tube, the second sealing ring far away from the cavity bottom of the sampling tube is propped against and connected with an annular pressing pad connected in the sampling tube,
the plug rod is inserted into the pressing pad.
Further, the sampling tube is internally provided with a step surface facing the opening of the sampling cavity so as to form the bulge.
Further, a guide block is arranged on the outer side of the plug rod, a chute along the length direction of the sampling tube is arranged in the sampling tube, and the guide block is arranged in the chute of the sampling tube in a sliding manner;
the guide block is arranged on one side, far away from the sampling hole of the sampling tube, of the pressure pad.
Further, the guide blocks are provided with a plurality of sliding grooves corresponding to the guide blocks, and each guide block is slidably arranged in the corresponding sliding groove of the sampling tube.
Further, the sampler further comprises a screw sleeve and a handle, wherein the screw sleeve is in threaded connection with the other end of the plug rod, the handle is connected to the screw sleeve, and the screw sleeve is arranged on one side of the sampling tube.
Further, the sampler further comprises a bearing sleeve and an axial thrust bearing, wherein the bearing sleeve is connected to the opening end of the sampling tube, the axial thrust bearing is embedded in the bearing sleeve, and the middle part of the screw sleeve is embedded in the axial thrust bearing.
Further, the sampling tube comprises a fixed sleeve, two ends of the fixed sleeve are respectively connected with the sampling tube and the threaded sleeve, an axial chute is formed in the fixed sleeve, and a guide block on the plug rod is slidably arranged in the chute of the fixed sleeve.
Further, one end of the sampling tube, which is close to the bottom of the cavity, is provided with a valve, the valve comprises a valve body and a valve needle, the valve body is provided with a valve cavity which is communicated with the sampling cavity and the sampling hole, and the bottom of the valve needle is propped against or separated from the wall of the sampling hole, so that the sampling cavity and the sampling hole are disconnected or communicated.
In another aspect, the invention provides a physical in-situ combustion simulation apparatus comprising a simulator and at least one sampler as described above, the sampling port of the sampler being in communication with the sampling port of one of the in-situ combustion regions of the simulator.
The beneficial effects of the invention at least comprise:
the invention provides a sampler and an in-situ combustion physical simulation device, which are suitable for sampling oil, gas and water in different areas in the in-situ combustion physical simulation device. Wherein, the sampling tube is provided with an open sampling cavity, the sampling tube is provided with a sampling hole, and the sampling hole of the sampling tube is operably communicated with the cavity bottom of the sampling cavity; one end of the plug rod can be inserted in the sampling cavity of the sampling tube in a sliding manner along the length direction of the sampling tube, and the other end of the plug rod is arranged outside the sampling tube. At present, a pipeline sampler is adopted to directly sample an oil-gas-water mixture at the extraction end of an in-situ combustion physical model, one end of the pipeline sampler is connected with the extraction end of a physical simulation device, the other end of the pipeline sampler is connected with a sample collection container, and oil-gas-water separation and analysis are carried out after sampling; because the pipeline sampler has poor tightness, the pipeline sampler can directly sample each area of the simulation device to cause fire suppression, and in severe cases, the in-situ combustion is extinguished, so that oil extraction cannot be normally propelled. The sampler provided by the embodiment of the invention is adopted, before the physical simulation of the in-situ combustion, the samplers with the same number as the sampling positions are prepared, the samplers are in one-to-one correspondence with all areas of the in-situ combustion, and sampling ports of the samplers are communicated with sampling ports of the areas corresponding to the physical simulation device of the in-situ combustion; then injecting a certain amount of air with pressure into the injection end of the physical model and igniting the air, in the in-situ combustion process, communicating a sampling port of a sampling tube with a sampling cavity, sliding one end of a plug rod towards a direction away from the bottom of the sampling cavity, so that a cavity is formed between one end of the plug rod and the bottom of the sampling cavity, and under the effect of pressure difference, a mixture of oil, gas and water in the in-situ combustion in simulation equipment spontaneously enters the cavity with small pressure from a high-pressure in-situ combustion layer in the physical simulation device, and due to the sealing arrangement of the sampling cavity of the sampling device, fire in the physical simulation device cannot be blown out in the sampling process, so that the in-situ combustion layer cannot be extinguished and normally pushed, and after the sampling device takes an oil, gas and water mixture, a channel between the sampling port of the sampling tube and the sampling cavity is cut off, so that sampling is completed; in addition, because the oil-gas-water mixture in the oil burning layer is always in a high pressure state, and before sampling, one end of the plug rod and the cavity bottom of the sampling cavity are positioned at the same position, when the oil-gas-water mixture is extracted, the mixture of oil-gas-water enters the sampling cavity, and because the plug rod is adjustable, the pressure in the sampling cavity is the same as the oil-gas-water pressure of the physical simulation device, so that the pressure of the obtained oil-gas-water sample is close to the actual oil-gas-water pressure in the oil burning layer, the oil-gas-water sample in a state close to the actual state is more favorable to be obtained, and the research accuracy is improved; the traditional pipeline sampler is consistent with the atmospheric pressure, and the oil gas water sample is taken out and then releases the pressure until the pressure is consistent with the atmospheric pressure, so that larger deviation occurs compared with the actual situation; therefore, the sampler provided by the invention can ensure that the sampling process is smoothly carried out, avoid the problem of fire suppression, ensure that in-situ combustion is smoothly propelled, and ensure that the sampled product is close to the actual pressure of the oil-gas-water mixed gas in the physical simulation device, thereby improving the research accuracy.
Drawings
Fig. 1 is a schematic structural diagram of a sampler in the present embodiment;
fig. 2 is a schematic structural view of the first seal ring and the second seal ring in fig. 1.
Reference numerals illustrate:
1-sampling tube, 101-sampling cavity, 102-sampling hole, 103-bulge, 104-chute, 2-plug rod, 3-first sealing ring, 4-second sealing ring, 5-press pad, 6-bearing sleeve, 7-axial thrust bearing, 8-screw sleeve, 9-handle, 10-guide block, 11-valve, 1101-valve body, 1102-valve needle, 12-fixed sleeve.
Detailed Description
In order to make the technical solution more clearly understood by those skilled in the art, the following detailed description is made with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a sampler according to the present embodiment, fig. 2 is a schematic structural diagram of a first sealing ring and a second sealing ring in fig. 1, and in combination with fig. 1 and fig. 2, in one aspect, an embodiment of the present invention provides a sampler suitable for sampling oil, gas and water in different areas of an in-situ combustion physical simulation device, where the sampler includes a sampling tube 1 and a plug rod 2.
Wherein, the sampling tube 1 is provided with a sampling cavity 101 along the axial direction, one axial end of the sampling cavity 101 is provided with an opening, the sampling tube 1 is provided with a sampling hole 102 along the radial direction, and the sampling hole 102 of the sampling tube 1 is in operable communication with the cavity bottom of the sampling cavity 101; one end of the plug rod 2 is slidably and hermetically inserted into the sampling cavity 101 of the sampling tube 1 along the length direction of the sampling tube 1, and the other end of the plug rod 2 is arranged outside the sampling tube 1.
At present, a pipeline sampler is adopted to directly sample an oil-gas-water mixture at the extraction end of an in-situ combustion physical model, one end of the pipeline sampler is connected with the extraction end of a physical simulation device, the other end of the pipeline sampler is connected with a sample collection container, and oil-gas-water separation and analysis are carried out after sampling; because the pipeline sampler has poor tightness, the pipeline sampler can directly sample each area of the simulation device to cause fire suppression, and in severe cases, the in-situ combustion is extinguished, so that oil extraction cannot be normally propelled. The sampler provided by the embodiment of the invention is adopted, before the physical simulation of the in-situ combustion, the samplers with the same number as the sampling positions are prepared, the samplers are in one-to-one correspondence with all areas of the in-situ combustion, and sampling ports of the samplers are communicated with sampling ports of the areas corresponding to the physical simulation device of the in-situ combustion; then injecting a certain amount of air with pressure into the injection end of the physical model and igniting, in the in-situ combustion process, communicating the sampling port 102 of the sampling tube 1 with the sampling cavity 101, and sliding one end of the plug rod 2 towards a direction away from the cavity bottom of the sampling cavity 101, so that a cavity is generated between one end of the plug rod 2 and the cavity bottom of the sampling cavity 101, and under the effect of pressure difference, a mixture of oil, gas and water of the in-situ combustion in the simulation equipment enters the cavity with small pressure spontaneously from the high-pressure in-situ combustion in the physical simulation device, and because the sampling cavity 101 of the sampler is arranged in a sealing manner, the in-situ combustion in the physical simulation device can not be extinguished to normally advance in the sampling process, and after the sampler takes an oil, gas and water mixture, a channel between the sampling port of the sampling tube 1 and the sampling cavity 101 is cut off, so that sampling is completed; in addition, because the oil-gas-water mixture in the oil burning layer is always in a high pressure state, and before sampling, one end of the plug rod 2 and the bottom of the sampling cavity 101 are in the same position, when the oil-gas-water mixture is extracted, the mixture of oil-gas-water enters the sampling cavity, and because the plug rod is adjustable, the pressure in the sampling cavity is the same as the oil-gas-water pressure of the physical simulation device, so that the pressure of the obtained oil-gas-water sample is close to the actual oil-gas-water pressure in the oil burning layer, the oil-gas-water sample in the actual state is more beneficial to being obtained, and the research accuracy is improved; and traditional pipeline sampler is unanimous with the atmospheric pressure, can release pressure to unanimous with the atmospheric pressure after taking out the oil gas water sample, and the great deviation appears comparing with the true condition.
The distance between the plug rod 2 and the bottom of the sampling cavity 101 can be used for controlling the volume of the oil gas water sample, and simultaneously controlling the pressure during sampling, so that the sampling pressure is ensured not to drop.
Specifically, in connection with fig. 1, in the present embodiment, the plug rod 2 is slidably sleeved with a first sealing ring 3, and the outer side of the first sealing ring 3 is fixedly pressed against the inside of the sampling tube 1.
The material of the first sealing ring 3 may be graphite, and the temperature of the in-situ combustion in the physical simulation device reaches 700 ℃, which belongs to the ultra-high temperature category, so that the common rubber sealing member cannot adapt to the ultra-high temperature environment, and the conventional piston sampling method cannot be selected; by adopting a plunger sealing method of graphite packing sealing, the first sealing ring 3 can realize sealing between the plug rod 2 and the sampling tube 1.
Referring to fig. 2, a plurality of first seal rings 3 may be provided, and a plurality of first seal rings 3 are slidably sleeved outside the plug rod 2 in sequence along the axial direction of the plug rod 2, for example, two first seal rings 3 may be provided, or three first seal rings 3 may be provided, and the number of the first seal rings 3 is not limited herein.
In order to achieve a better sealing effect, referring to fig. 2, in this embodiment, two sides of the first sealing ring 3 are respectively pressed against the second sealing rings 4, the plug rod 2 is slidably inserted into the two second sealing rings 4, and outer sides of the two second sealing rings 4 are both fixedly pressed against the sampling tube 1. Specifically, the two second seal rings 4 are made of red copper. The red copper has small hardness and increased volume in a high-temperature environment, so that the gap between the second sealing ring 4 and the sampling tube 1 as well as between the first sealing ring 3 and the plug rod 2 can be reduced, and the problem that the plug rod 2 is blocked due to the fact that the first sealing ring 3 is extruded into the second sealing ring 4 or the gap between the second sealing ring 4 and the plug rod 2 is prevented; meanwhile, the second sealing ring 4 made of red copper has good lubricity and does not influence the axial movement of the plug rod 2.
Further, in the present embodiment, with reference to fig. 1 and 2, a protrusion 103 is provided in the sampling tube 1, a second sealing ring 4 close to the bottom of the cavity of the sampling tube 1 is pressed against the protrusion 103 of the sampling tube 1, a second sealing ring 4 far from the bottom of the cavity of the sampling tube 1 is pressed against and connected with an annular pressing pad 5 connected in the sampling tube 1, and a plug rod 2 is inserted in the pressing pad 5; this completes the fixation of the first sealing ring 3 and of the two second sealing rings 4.
Further, in connection with fig. 1, a stepped surface facing the opening of the sampling cavity 101 may be provided in the sampling tube 1 to form the above-mentioned protrusion 103. Of course, an annular boss may be disposed in the sampling tube 1, or a plurality of annular block-shaped protrusions 103 may be disposed, which is not limited herein, and may be selected according to the effect in practical application; but it is necessary to ensure that there is a gap between the outside of the stopper rod 2 and the protrusion 103 of the sampling tube 1 to ensure smooth sliding of the stopper rod 2.
Further, in order to avoid rotation during sliding of the plug rod 2, referring to fig. 1, in this embodiment, a guide block 10 is disposed on the outer side of the plug rod 2, a sliding groove 104 along the axial direction of the sampling tube 1 is disposed on the sampling tube 1, and the guide block 10 is slidably disposed in the sliding groove 104 of the sampling tube 1; the guide block 10 is arranged on one side of the pressure pad 5 away from the sampling hole 102 of the sampling tube 1.
Further, referring to fig. 1, a plurality of guide blocks 10 may be provided, and a plurality of sliding grooves 104 corresponding to the guide blocks 10 are provided in the sampling tube 1, and each guide block 10 is slidably provided in the corresponding sliding groove 104 of the sampling tube; the two guide blocks 10 may be provided, and the two guide blocks 10 may be implemented by a guide shaft inserted through the center line of the stopper rod 2, and both ends of the guide shaft extend out of the stopper rod 2 to form the two guide blocks 10; the guide blocks may be provided in 3 or 4, and are not particularly limited.
Further, in order to realize the sliding of the plug rod 2 along the length direction of the sampling tube 1, in this embodiment, with reference to fig. 1, the sampler further includes a screw sleeve 8 and a handle 9, the screw sleeve 8 is in threaded connection with the other end of the plug rod 2, the handle 9 is connected to the screw sleeve 8, the screw sleeve 8 is disposed at one side of the sampling tube 1, when the handle 9 is rotated, the screw sleeve 8 rotates along with the handle 9, and the plug rod 2 cannot rotate under the action of the guide block 10 and the chute 104, so that the plug rod 2 moves along the length direction, thereby realizing the sliding of the plug rod 2; the threaded connection between the threaded sleeve 8 and the plug rod 2 enables the sampling amount to be accurately adjustable; after sampling, the pressure of the oil-gas-water sample in the sampling cavity is accurately adjustable, so that the pressure of the sample is as close to the pressure in the in-situ combustion as possible.
Further, in order to reduce the resistance of the rotating handle 9, in this embodiment, in combination with fig. 1, the sampler may further include a bearing sleeve 6 and a bearing thrust bearing 7, the bearing sleeve 6 is connected to the open end of the sampling tube 1, the bearing thrust bearing 7 is embedded in the bearing sleeve 6, and the middle part of the screw sleeve 8 is embedded in the bearing thrust bearing 7. The thrust ball bearings 7 may be selected from thrust ball bearings, and a plurality of thrust ball bearings may be provided along the length direction of the stopper rod 2, for example, two or three, which are not limited herein; the number of the thrust ball bearings is matched with the fixable number of the bearing sleeves 6; more specifically, the shaft collar of each thrust ball bearing is connected with the outer side of the other end of the plug rod 2, the seat ring of each thrust ball bearing is fixedly arranged on the bearing sleeve 6, and the rollers of the thrust ball bearings can effectively reduce the rotation resistance of the handle 9, so that the safety and convenience of ultra-high temperature and high pressure sampling are realized; the bearing sleeve 6 can be connected with the sampling tube 1 through bolts; the handle 9 can also be screwed onto the threaded sleeve 8.
In order to facilitate installation, in this embodiment, the sampler may further include a fixing sleeve 12, two ends of the fixing sleeve 12 are respectively connected with the sampling tube 1 and the threaded sleeve 8, an axial chute 104 is disposed in the fixing sleeve 12, and the guide block 10 on the plug rod 2 is slidably disposed in the chute 104 of the fixing sleeve 12.
Further, in the present embodiment, in order to achieve the communication and disconnection of the sampling port of the sampling tube 1 with the sampling chamber 101, the end of the sampling tube 1 near the bottom of the chamber may be provided with a valve 11, the valve 11 may include a valve body 1101 and a valve needle 1102, the valve body 1101 is provided with a valve cavity communicating the sampling chamber 101 with the sampling hole 102, and the needle bottom of the valve needle 1102 is operatively abutted against or separated from the wall of the sampling hole 102 to disconnect or communicate the sampling chamber 101 with the sampling hole 102. More specifically, the valve cavity of the valve body 1101 may be coaxially communicated with the sampling port of the sampling tube 1, the body strengthening of the valve cavity may be communicated with the cavity of the sampling cavity 101, and the bottom diameter of the valve cavity may be larger than the diameter of the sampling hole 102, so that the needle bottom of the valve needle 1102 may abut against the bottom of the valve cavity to realize the fracture between the sampling port and the sampling cavity 101; the needle bottom of needle 1102 may also be tapered, although this is merely illustrative, and valve 11 is a prior art valve that may be flexibly selected as desired and is not limited in this regard.
On the other hand, the embodiment of the invention also provides an in-situ combustion physical simulation device, which comprises a simulator and at least one sampler, wherein a sampling port of the sampler is communicated with one of sampling ports of an in-situ combustion area of the simulator. For example, when it is necessary to sample the live line, the flocculation area, and the oil wall area, three samplers may be provided, which are respectively connected to the sampling ports of the physical simulation devices corresponding to the live line, the flocculation area, and the oil wall area, and sample the live line, the flocculation area, and the oil wall area, respectively. The locations of the corresponding simulators in the burned, coked and remaining oil zones may also be sampled, without limitation.
The sampling port arranged on the simulator can be provided with a valve to realize the on-off of the sampling port of the simulator, and the selection of the valve is not limited.
The sampler and the in-situ combustion physical simulation device provided by the invention have at least the following advantages:
(1) The on-line sampling of different zones in the in-situ combustion process can be realized, the extraction of multiple sample samples can be realized, and fluid samples of different zones in the in-situ combustion process can be obtained;
(2) The physical and chemical reaction characteristic analysis of crude oil in the fireflood process is realized;
(3) The pressure compensation design can ensure that the fluid sample is safely extracted under the conditions of high temperature and high pressure;
(4) The online sampling of complex fluid in a porous medium is realized, and the sampling amount and the pressure of a sampling sample are accurately adjustable;
(5) The smooth proceeding of the sampling process is ensured, the problem of fire suppression is avoided, and the in-situ combustion is smoothly advanced;
(6) The sampled product is close to the actual pressure of the oil-gas-water mixed gas in the physical simulation device, and the research accuracy is improved.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.
Claims (15)
1. A sampler suitable for sampling oil, gas and water for different areas in an in-situ combustion physical simulation device, the sampler comprising:
the sampling device comprises a sampling tube, a sampling cavity, a sampling hole and a sampling pipe, wherein the sampling tube is axially provided with the sampling cavity, one axial end of the sampling cavity of the sampling tube is provided with an opening, the sampling tube is radially provided with the sampling hole, and the sampling hole of the sampling tube is operatively communicated with the cavity bottom of the sampling cavity;
the plug rod, one end of plug rod can be followed the length direction of sampling section of thick bamboo is sealed to be inserted with sliding and is established the sample intracavity of sampling section of thick bamboo, the other end of plug rod sets up the sampling section of thick bamboo is outer.
2. A sampler according to claim 1, in which the plug rod is slidingly sleeved with a first sealing ring, the outside of which is fixed against the inside of the sampling tube.
3. A sampler according to claim 2, wherein the first sealing ring is graphite.
4. The sampler of claim 2, wherein a plurality of first sealing rings are provided, and a plurality of first sealing rings are sequentially sleeved outside the plug rod in a sliding manner along the axial direction of the plug rod.
5. The sampler of claim 2, wherein two sides of the first sealing ring are respectively pressed with second sealing rings, the plug rod is slidably inserted into two second sealing rings, and outer sides of the two second sealing rings are fixedly pressed in the sampling tube.
6. The sampler of claim 5, wherein the two second sealing rings are made of red copper.
7. A sampler according to claim 1, wherein a bulge is arranged in the sampling tube, the second sealing ring close to the cavity bottom of the sampling tube is propped against the bulge of the sampling tube, the second sealing ring far away from the cavity bottom of the sampling tube is propped against and connected with an annular pressure pad connected in the sampling tube,
the plug rod is inserted into the pressing pad.
8. A sampler according to claim 7, in which a stepped surface is provided in the cartridge towards the opening of the sampling chamber to form the projection.
9. The sampler of claim 7, wherein a guide block is arranged on the outer side of the plug rod, a chute along the length direction of the sampling tube is arranged in the sampling tube, and the guide block is arranged in the chute of the sampling tube in a sliding manner;
the guide block is arranged on one side, far away from the sampling hole of the sampling tube, of the pressure pad.
10. A sampler according to claim 9, wherein a plurality of guide blocks are provided, a plurality of slide grooves corresponding to the guide blocks are provided in the sampling tube, and each guide block is slidably provided in a corresponding slide groove of the sampling tube.
11. The sampler of claim 9, further comprising a sleeve threadably connected to the other end of the plunger and a handle connected to the sleeve, the sleeve disposed on one side of the sampling barrel.
12. The sampler of claim 11, further comprising a bearing sleeve and an axial thrust bearing, wherein the bearing sleeve is connected to the open end of the sampling barrel, the axial thrust bearing is embedded in the bearing sleeve, and the middle of the screw sleeve is embedded in the axial thrust bearing.
13. The sampler of claim 11, wherein the sampling tube comprises a fixed sleeve, two ends of the fixed sleeve are respectively connected with the sampling tube and the screw sleeve, an axial chute is arranged in the fixed sleeve, and a guide block on the plug rod is slidably arranged in the chute of the fixed sleeve.
14. A sampler according to any one of claims 1 to 13, wherein the end of the cartridge adjacent the bore bottom is provided with a valve comprising a valve body and a valve needle, the valve body being provided with a valve cavity communicating the sampling bore with the sampling bore, the needle bottom of the valve needle being operable to bear against or be spaced from the bore wall of the sampling bore to disconnect or communicate the sampling bore with the sampling bore.
15. A physical simulation device of in-situ combustion, characterized in that the simulation device comprises a simulator and at least one sampler according to any one of claims 1-14, the sampling port of which communicates with the sampling port of one of the areas of the simulator of in-situ combustion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111362628.2A CN116136462A (en) | 2021-11-17 | 2021-11-17 | Sampler and in-situ combustion physical simulation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111362628.2A CN116136462A (en) | 2021-11-17 | 2021-11-17 | Sampler and in-situ combustion physical simulation device |
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| CN116136462A true CN116136462A (en) | 2023-05-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117262183A (en) * | 2023-11-22 | 2023-12-22 | 中国海洋大学 | Shipborne resource supplementing device based on biomass pyrolysis and ship safety system |
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2021
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117262183A (en) * | 2023-11-22 | 2023-12-22 | 中国海洋大学 | Shipborne resource supplementing device based on biomass pyrolysis and ship safety system |
| CN117262183B (en) * | 2023-11-22 | 2024-02-09 | 中国海洋大学 | Shipborne resource supplementing device based on biomass pyrolysis and ship safety system |
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