CN214886995U - Sea area natural gas hydrate self-entering type exploitation simulation test device - Google Patents
Sea area natural gas hydrate self-entering type exploitation simulation test device Download PDFInfo
- Publication number
- CN214886995U CN214886995U CN202023075408.5U CN202023075408U CN214886995U CN 214886995 U CN214886995 U CN 214886995U CN 202023075408 U CN202023075408 U CN 202023075408U CN 214886995 U CN214886995 U CN 214886995U
- Authority
- CN
- China
- Prior art keywords
- self
- natural gas
- gas hydrate
- simulation
- simulated
- 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.)
- Withdrawn - After Issue
Links
- NMJORVOYSJLJGU-UHFFFAOYSA-N methane clathrate Chemical compound C.C.C.C.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O NMJORVOYSJLJGU-UHFFFAOYSA-N 0.000 title claims abstract description 69
- 238000004088 simulation Methods 0.000 title claims abstract description 56
- 238000012360 testing method Methods 0.000 title claims abstract description 53
- 239000013535 sea water Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 77
- 239000007789 gas Substances 0.000 claims description 49
- 238000003860 storage Methods 0.000 claims description 35
- 238000002347 injection Methods 0.000 claims description 34
- 239000007924 injection Substances 0.000 claims description 34
- 239000007788 liquid Substances 0.000 claims description 22
- 238000010438 heat treatment Methods 0.000 claims description 11
- 239000004576 sand Substances 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 7
- 230000005674 electromagnetic induction Effects 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 7
- 230000033228 biological regulation Effects 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 238000005086 pumping Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 19
- 238000011160 research Methods 0.000 abstract description 3
- 238000000354 decomposition reaction Methods 0.000 description 11
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 10
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 10
- 238000005065 mining Methods 0.000 description 6
- 239000001569 carbon dioxide Substances 0.000 description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 description 5
- 238000005253 cladding Methods 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000003345 natural gas Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000013000 chemical inhibitor Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Landscapes
- Geophysics And Detection Of Objects (AREA)
Abstract
The utility model provides a sea area natural gas hydrate is from income formula exploitation analogue test device, be provided with the high-pressure test case of sea water, simulation seabed and simulation natural gas hydrate reservoir bed including inside, high-pressure test incasement portion is provided with and is gone into the simulation in the simulation natural gas hydrate reservoir bed by the high-pressure test case outside and from going into the structure, the simulation is jetted out by the emitter drive from going into the structure. The utility model relates to a rationally, simple structure can simulate exploitation device and inject, natural gas hydrate exploitation and exploitation device and retrieve, can truly simulate the exploitation process of sea area natural gas hydrate from income formula exploitation method, has the significance to research sea area natural gas hydrate from the suitability, exploitation efficiency and the scope of action etc. of income formula exploitation device.
Description
Technical Field
The utility model relates to a sea area natural gas hydrate is from income formula exploitation analogue test device.
Background
The natural gas hydrate is an ice-like crystalline substance which is distributed in deep sea sediments or permafrost in land areas and is formed by natural gas and water under high pressure and low temperature conditions. The combustible ice after combustion only generates a small amount of carbon dioxide and water, and compared with traditional energy sources such as coal, petroleum and the like, the pollution degree is obviously reduced and the energy is 10 times higher. The total amount of organic carbon resources contained is 2 times of the total amount of coal, oil and natural gas known in the world, and the organic carbon resources are considered as alternative energy sources of the oil and the natural gas by international public.
Natural gas hydrate mining technologies can be broadly divided into: the method comprises a depressurization method, a heat injection method, a chemical agent method, a carbon dioxide replacement mining method and a solid fluidization method, wherein the mining methods require that an overlying layer of a hydrate reservoir is a closed covering layer, have good tightness and a certain thickness and have a solid structure, but the mining methods cannot accurately and effectively control the decomposition speed and the mining range of the hydrate, possibly cause marine geological environment disasters, and have high cost for mining the natural gas hydrate by the prior art.
The evaluation and analysis of the natural gas hydrate exploitation technology are carried out in the current stage through the angle of numerical simulation, and reference is provided for optimizing an optimal exploitation method. However, if the method leaves the experimental simulation, under the condition that the current field pilot production data is limited, the accuracy of the simulation result is difficult to verify, and the action mechanism of the natural gas hydrate exploitation measure cannot be explained. Therefore, the simulation test technology for the natural gas hydrate exploitation process has an irreplaceable effect on the aspects of hydrate exploitation theory and technology basic research.
SUMMERY OF THE UTILITY MODEL
The utility model discloses improve above-mentioned problem, promptly the to-be-solved technical problem of the utility model is to provide a sea area natural gas hydrate is from income formula exploitation analogue test device, simple structure and convenient to use can simulate the exploitation device and inject, natural gas hydrate exploitation and exploitation device and retrieve, can truly simulate the exploitation process of sea area natural gas hydrate from income formula exploitation method, have the significance to research sea area natural gas hydrate from the suitability, the exploitation efficiency and the scope of action of income formula exploitation device.
The utility model discloses a concrete embodiment is constituted like this, and it is including the inside high pressure test case that is provided with sea water, simulation seabed and simulation natural gas hydrate reservoir stratum, high pressure test incasement portion is provided with and is gone into the simulation in the simulation natural gas hydrate reservoir stratum by the high pressure test case outside and from going into the structure, the simulation is jetted out by the emitter drive from going into the structure.
Furthermore, a cavity is arranged in the middle of the simulated self-entering structure body, and the simulated self-entering structure body comprises a connecting member, a main body member, side wings positioned on two sides of the upper part of the main body member and a head member positioned on the lower part of the main body member which are sequentially arranged from top to bottom; the lower part of the head component is provided with a sharp part.
Further, the main body member includes an inner side water permeable protection member, a sand control device and an outer side water permeable protection member which are respectively arranged on the outer side of the two sides of the cavity in sequence, a cable packer is arranged at the opening of the cavity above the main body member, an end member is arranged on the lower portion of the main body member, and the end member is connected with the head member.
Further, a gas-liquid collecting system is arranged above the high-pressure test box and consists of a water storage system and a gas storage system, the gas storage system comprises a gas storage tank, a gas compression device, a gas drying device, a first flow monitor and a gas pipe which are sequentially arranged, the upper end of the gas pipe is sequentially connected with the gas storage tank through the first flow monitor, the gas drying device and the gas compression device, and the lower end of the gas pipe is connected with the top of a cavity inside the simulated self-entering structure; the water storage system comprises a water storage tank, a water pump, a second flow monitor and a water delivery pipe which are sequentially arranged, the lower end of the water delivery pipe extends to the bottom in the cavity in the middle of the simulation self-entering structure body, a gas-liquid separation device is arranged at the lower end of the water delivery pipe, and the upper end of the water delivery pipe is sequentially connected with the water storage tank through the second flow monitor and the water pump and is used for pumping liquid which is simulated in the cavity of the simulation self-entering structure body into the water storage tank.
Furthermore, the launching device comprises an ejection device and a vertical drawing system, wherein the ejection device is used for giving a certain initial speed for the simulated self-entering structural body to descend so that the simulated self-entering structural body reaches a specified depth; the vertical drawing system comprises a lifting system and a cable, wherein the upper part of the cable is connected with the lifting system, and the lower end of the cable is connected with the top of the simulation self-entering structural body.
Furthermore, a water pressure control system and a temperature regulating system are arranged at the outer side part of the high-pressure test box, the water pressure control system is used for applying water pressure to the high-pressure test box to simulate a deep sea water pressure environment, and the temperature regulating system is used for regulating the temperature in the high-pressure test box.
Furthermore, the simulated natural gas hydrate reservoir stratum consists of a natural gas hydrate simulated upper cladding, a natural gas hydrate simulated reservoir stratum and a simulated natural gas hydrate lower cladding.
Further, the simulation is provided with jet injection system on going into the structure certainly, jet injection system includes drive arrangement, jet pipeline and is located a plurality of injection ports on the jet pipeline, the jet pipeline includes that perpendicular pipeline and many are located the simulation respectively and go into structure upper portion, the simulation is from going into the horizontal pipeline of structure lower part, perpendicular pipeline lower extreme extends to the head component and is divided into two branches at least, the injection port is located the output of horizontal pipeline or the output of branch road, drive arrangement provides injection power for jet injection system for water is sprayed by different injection ports and is carried out hydraulic cutting to the simulation natural gas hydrate reservoir.
Furthermore, the lower part of the simulated self-entering structural body is provided with an auxiliary heating system, the auxiliary heating system comprises an electromagnetic induction coil and an electromagnetic heating controller, and the electromagnetic induction coil surrounds the surface of the lower part of the simulated self-entering structural body.
Compared with the prior art, the utility model discloses following beneficial effect has: the device is simple in structure and reasonable in design, can simulate the injection of the exploitation device, the exploitation of the natural gas hydrate and the recovery of the exploitation device, can truly simulate the exploitation process of the sea natural gas hydrate self-entry exploitation method, and has important significance for researching the applicability, the exploitation efficiency, the action range and the like of the sea natural gas hydrate self-entry exploitation device.
Drawings
Fig. 1 is a schematic view of the overall structure of an embodiment of the present invention;
FIG. 2 is a schematic diagram of a simulated self-entering structure according to an embodiment of the present invention;
FIG. 3 is a schematic view of the internal layout of the main body member according to the embodiment of the present invention;
FIG. 4 is a schematic view of an auxiliary heating system according to an embodiment of the present invention;
fig. 5 is a schematic view of a jet injection system according to an embodiment of the present invention.
In the figure: a-natural gas hydrate simulated overburden; b-a simulated reservoir of natural gas hydrate; c-simulating a natural gas hydrate lower coating; d-a high-pressure test chamber; 1-simulating a self-entering structure; 11-a connecting member; 12-flank; 13-a body member; 14-a head member; 15-cable-over packer; 16-an outer water permeable protective member; 17-inner water permeable protection member; 18-a tip member; 2-launch means, 21-cable; 22-an ejection device; 23-a lifting system; 3-a sand control device; 31-a cavity; 4-water storage system, 41-water delivery pipe; 42-gas transmission pipe; 43-a water pump; 44-a water storage tank; 45-a gas-liquid separation device; 5-gas storage system, 51-gas drying device; 52-a gas compression device; 53-a gas storage tank; 61-a first flow monitor; 62-a second flow monitor; 71-a temperature regulation system; 72-a hydraulic control system; 81-electromagnetic induction coil; 91-a jet conduit; 92-jet ports.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Example (b): as shown in fig. 1 to 5, the sea area natural gas hydrate self-entry type exploitation simulation test device comprises a high-pressure test chamber D, wherein seawater, a simulation seabed and a simulation natural gas hydrate reservoir layer are arranged inside the high-pressure test chamber D, a simulation self-entry structure body 1 which is flushed into the simulation natural gas hydrate reservoir layer from the outside of the high-pressure test chamber is arranged inside the high-pressure test chamber, and the simulation self-entry structure body is driven by a launching device 2 to be ejected.
The simulated natural gas hydrate reservoir stratum consists of a natural gas hydrate simulated upper cladding layer A, a natural gas hydrate simulated reservoir layer B and a simulated natural gas hydrate lower cladding layer C.
The middle part of the simulated self-entering structural body is provided with a cavity 31, the simulated self-entering structural body comprises a connecting member 11, a main body member 13, side wings 12 positioned on two sides of the upper part of the main body member and a head member 14 positioned on the lower part of the main body member which are sequentially arranged from top to bottom, and the connecting member is used for connecting the main body member, an ejection device and a vertical drawing system; the lower part of the head component is provided with a sharp part, and can be in a conical shape or an arc cap shape;
the side wings are arranged for adjusting the falling posture of the simulated self-entering structural body in water and reducing deflection.
The main body component comprises an inner side water permeable protection component 17, a sand control device 3 and an outer side water permeable protection component 16 which are sequentially arranged from the two sides of the cavity to the outer side respectively, a cable packer 15 is arranged at the opening of the cavity above the main body component, an end component 18 is arranged at the lower part of the main body component, and the end component is connected with the head component.
The simulated self-entering structural body is bullet-shaped, and the main body component is cylindrical and can be used for accommodating the sand control device and a conveying channel for conveying gas or liquid; the sand control device allows gas or liquid to pass through, and plays a role in filtering sediment; the inner side water permeable protection component and the outer side water permeable protection component can protect the sand control device from being damaged.
In this embodiment, a gas-liquid collection system is arranged above the high-pressure test chamber, the gas-liquid collection system is composed of a water storage system 4 and a gas storage system 5, the gas storage system 5 comprises a gas storage tank 53, a gas compression device 52, a gas drying device 51, a first flow monitor 61 and a gas pipe 42 which are sequentially arranged, the upper end of the gas pipe is sequentially connected with the gas storage tank through the first flow monitor, the gas drying device and the gas compression device, and the lower end of the gas pipe is connected with the top of a cavity inside the simulated self-entering structural body; the water storage system 4 comprises a water storage tank 44, a water pump 43, a second flow monitor 62 and a water delivery pipe 41 which are sequentially arranged, the lower end of the water delivery pipe extends to the bottom in the cavity in the middle of the simulated self-entering structural body, a gas-liquid separation device 45 is arranged at the lower end of the water delivery pipe, and the upper end of the water delivery pipe is sequentially connected with the water storage tank through the second flow monitor and the water pump and is used for pumping the liquid simulated self-entering the cavity of the structural body into the water storage tank.
The gas-liquid collection system can transmit liquid and gas in the cavity to the external treatment system, and can reduce the internal pressure of the cavity, so that the pressure of the surrounding stratum is reduced, the decomposition of natural gas hydrate is promoted, the gas enters the cavity through the sand prevention device under the action of pressure difference, the liquid in the cavity moves downwards under the action of gravity, the gas moves upwards, the gas is collected into the gas storage tank, and the liquid is pumped into the liquid storage tank.
In addition, the gas-liquid separation device is used for performing secondary separation on liquid and gas after the liquid and the gas are subjected to gravity separation in the cavity, so that the gas is prevented from entering the water conveying pipe.
In this embodiment, the launching device includes an ejection device 22 and a vertical pulling system, the ejection device is used to give a certain initial speed for the simulated self-entering structural body to drop, so that the simulated self-entering structural body reaches a specified depth; the vertical drawing system comprises a lifting system 23 and a cable 21, wherein the upper part of the cable is connected with the lifting system, and the lower end of the cable is connected with the top of the simulation self-entering structural body.
In this embodiment, high pressure test case outside portion is provided with water pressure control system and temperature regulation system, and water pressure control system is used for exerting water pressure simulation deep sea water pressure environment to in the high pressure test case, and temperature regulation system is used for adjusting the interior temperature of high pressure test case.
In this embodiment, the simulation is provided with jet injection system from going into on the structure, jet injection system includes drive arrangement, jet pipeline 91 and is located a plurality of injection ports 92 on the jet pipeline, the jet pipeline includes vertical pipeline and 4 horizontal pipelines that are located the simulation respectively and go into structure upper portion, simulation lower part from going into the structure, one of them simulation is from going into structure upper portion, three other intervals set up in the simulation and go into the structure lower part from, every horizontal pipeline all with vertical pipeline intercommunication, vertical pipeline lower extreme extends to the head component and divide into two at least branches, the injection port is located the output of horizontal pipeline or the output of branch road, drive arrangement provides injection power for jet injection system for water carries out the water conservancy cutting to the simulation natural gas hydrate reservoir bed by the blowout of different injection ports.
The input end of the jet pipeline can be connected with a water storage tank or other external water sources and is extracted by a driving device.
The function of the jet injection system is as follows: (1) when the natural gas hydrate decomposition range is insufficient, the jet injection system sprays water to a reservoir stratum around the simulated self-entering structure, the hydraulic cutting effect of the jet injection system can increase the decomposition interface, and the exploitation efficiency is improved; (2) under the condition that the simulated reservoir of the simulated natural gas hydrate has higher hardness, when the simulated self-entering structural body fails to reach the preset depth, the jet injection system sprays water to the lower part of the simulated self-entering structural body, and the hydraulic cutting function of the jet injection system can promote the simulated self-entering structural body to further submerge; (3) the jet injection system can also inject hot seawater, carbon dioxide or chemical inhibitors into the exploitation range, so that the decomposition efficiency of the natural gas hydrate is improved; (4) carbon dioxide can be injected into the upper part of the simulated natural gas hydrate reservoir, and the carbon dioxide is solidified with surrounding water, so that the putting strength of the stratum on the upper part of the simulated natural gas hydrate reservoir can be improved, and the stability is improved.
In the embodiment, the lower part of the simulated self-entering structural body is provided with an auxiliary heating system, the auxiliary heating system comprises an electromagnetic induction coil and an electromagnetic heating controller, and the electromagnetic induction coil surrounds the surface of the lower part of the simulated self-entering structural body;
the electromagnetic induction coil directly surrounds the simulated self-entering structure by utilizing the characteristic that the simulated self-entering structure is mainly composed of steel, so that the simulated self-entering structure generates heat, the decomposition speed of the surrounding natural gas hydrate is improved, and the secondary generation of the natural gas hydrate is prevented.
In this embodiment, the sea area natural gas hydrate self-entry exploitation simulation test device further includes a control system, a monitoring system and a power supply system; the power supply system is used for supplying power to the test equipment; the control system is used for controlling the operation of each test device and the opening and closing of the pipeline; and the monitoring system is used for monitoring the running condition of each test device.
In this embodiment, in operation:
(1) checking the running condition, the pipeline connection and the equipment parameter setting condition of each system of the sea area natural gas hydrate self-entry type exploitation test simulation test device, and ensuring that the sea area natural gas hydrate self-entry type exploitation test simulation test device runs normally;
(2) the pressure and the temperature in the high-pressure test box are regulated to meet the test requirements through a water pressure control system and a temperature regulation system;
releasing a simulated self-entering structural body on the upper side of the test box through an ejection device and a vertical drawing system, and enabling the simulated self-entering structural body to rush into the simulated natural gas hydrate reservoir (generally into the natural gas hydrate simulated reservoir or the lower cladding of the natural gas hydrate simulated reservoir);
(3) the water pump drives the water pipe to pump out water in the cavity, the pressure in the cavity and the pressure of the surrounding stratum are reduced, the natural gas hydrate in the surrounding stratum is decomposed, water and natural gas formed by decomposition continuously enter the cavity under the action of pressure difference, then the water continuously enters the water pipe, and the natural gas continuously enters the gas pipe, so that the self-entering simulated exploitation of the natural gas hydrate is realized.
(4) In addition, in the working process, the periphery of the simulated self-entering structure body is heated through an auxiliary heating system or hot seawater injection, so that the decomposition efficiency of the natural gas hydrate is improved; injecting a chemical inhibitor to a reservoir stratum around the simulated self-entering structural body through a jet injection system, so that the decomposition efficiency of the natural gas hydrate is improved; when the natural gas hydrate decomposition range is insufficient, the jet injection system can also jet water in the water storage tank to a reservoir stratum around the simulated self-entering structure, and the hydraulic cutting effect of the jet injection system can increase the decomposition interface.
Any technical solution disclosed in the present invention is, unless otherwise stated, disclosed a numerical range if it is disclosed, and the disclosed numerical range is a preferred numerical range, and any person skilled in the art should understand that: the preferred ranges are merely those values which are obvious or representative of the technical effect which can be achieved. Because numerical value is more, can't be exhaustive, so the utility model discloses just disclose some numerical values with the illustration the technical scheme of the utility model to, the numerical value that the aforesaid was enumerated should not constitute right the utility model discloses create the restriction of protection scope.
If the terms "first," "second," etc. are used herein to define parts, those skilled in the art will recognize that: the terms "first" and "second" are used merely to distinguish one element from another in a descriptive sense and are not intended to have a special meaning unless otherwise stated.
Also, above-mentioned the utility model discloses if disclose or related to mutually fixed connection's spare part or structure, then, except that other the note, fixed connection can understand: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).
In addition, the terms used in any aspect of the present disclosure as described above to indicate positional relationships or shapes include similar, analogous, or approximate states or shapes unless otherwise stated.
The utility model provides an arbitrary part both can be assembled by a plurality of solitary component parts and form, also can be the solitary part that the integrated into one piece technology was made.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.
Claims (8)
1. The sea area natural gas hydrate self-entering type exploitation simulation test device is characterized by comprising a high-pressure test box, wherein seawater, a simulation seabed and a simulation natural gas hydrate reservoir layer are arranged inside the high-pressure test box, a simulation self-entering structure body which is flushed into the simulation natural gas hydrate reservoir layer from the outside of the high-pressure test box is arranged inside the high-pressure test box, and the simulation self-entering structure body is driven by a launching device to be ejected.
2. The offshore natural gas hydrate self-entry exploitation simulation test device according to claim 1, wherein a cavity is arranged in the middle of the simulated self-entry structure, and the simulated self-entry structure comprises a connecting member, a main body member, side wings positioned on two sides of the upper part of the main body member, and a head member positioned on the lower part of the main body member, which are sequentially arranged from top to bottom; the lower part of the head component is provided with a sharp part.
3. The offshore natural gas hydrate self-entry exploitation simulation test device according to claim 2, wherein the main body member comprises an inner water permeable protection member, a sand control device and an outer water permeable protection member which are sequentially arranged from two sides of the cavity to the outside, a cable packer is arranged at an opening of the cavity above the main body member, an end member is arranged at the lower part of the main body member, and the end member is connected with the head member.
4. The sea area natural gas hydrate self-entry type exploitation simulation test device according to claim 1 or 2, wherein a gas-liquid collection system is arranged above the high-pressure test chamber, the gas-liquid collection system is composed of a water storage system and a gas storage system, the gas storage system comprises a gas storage tank, a gas compression device, a gas drying device, a first flow monitor and a gas pipe which are sequentially arranged, the upper end of the gas pipe is sequentially connected with the gas storage tank through the first flow monitor, the gas drying device and the gas compression device, and the lower end of the gas pipe is connected with the top of a cavity inside the simulated self-entry structure; the water storage system comprises a water storage tank, a water pump, a second flow monitor and a water delivery pipe which are sequentially arranged, the lower end of the water delivery pipe extends to the bottom in the cavity in the middle of the simulation self-entering structure body, a gas-liquid separation device is arranged at the lower end of the water delivery pipe, and the upper end of the water delivery pipe is sequentially connected with the water storage tank through the second flow monitor and the water pump and is used for pumping liquid which is simulated in the cavity of the simulation self-entering structure body into the water storage tank.
5. The offshore natural gas hydrate self-entry exploitation simulation test device according to claim 1 or 2, wherein the launching device comprises an ejection device and a vertical pulling system, and the ejection device is used for giving an initial dropping speed to the simulated self-entry structure so that the simulated self-entry structure reaches a specified depth; the vertical drawing system comprises a lifting system and a cable, wherein the upper part of the cable is connected with the lifting system, and the lower end of the cable is connected with the top of the simulation self-entering structural body.
6. The offshore natural gas hydrate self-entry exploitation simulation test device according to claim 1 or 2, wherein a water pressure control system and a temperature regulation system are arranged at an outer side of the high-pressure test box, the water pressure control system is used for applying water pressure to the high-pressure test box to simulate a deep sea water pressure environment, and the temperature regulation system is used for regulating temperature in the high-pressure test box.
7. The offshore natural gas hydrate self-entry exploitation simulation test device according to claim 2 or 3, wherein a jet injection system is arranged on the simulated self-entry structure, the jet injection system includes a driving device, a jet pipeline and a plurality of injection ports arranged on the jet pipeline, the jet pipeline includes a vertical pipeline and a plurality of horizontal pipelines respectively arranged on the upper portion of the simulated self-entry structure and the lower portion of the simulated self-entry structure, the lower end of the vertical pipeline extends to the head member and is divided into at least two branches, the injection ports are arranged at the output ends of the horizontal pipelines or the output ends of the branches, and the driving device provides injection power for the jet injection system so that water is ejected from different injection ports to hydraulically cut the simulated natural gas hydrate reservoir.
8. The offshore natural gas hydrate self-entry exploitation simulation test device according to claim 1, wherein an auxiliary heating system is arranged at a lower portion of the simulated self-entry structure, the auxiliary heating system comprises an electromagnetic induction coil and an electromagnetic heating controller, and the electromagnetic induction coil is arranged around the surface of the lower portion of the simulated self-entry structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023075408.5U CN214886995U (en) | 2020-12-18 | 2020-12-18 | Sea area natural gas hydrate self-entering type exploitation simulation test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023075408.5U CN214886995U (en) | 2020-12-18 | 2020-12-18 | Sea area natural gas hydrate self-entering type exploitation simulation test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214886995U true CN214886995U (en) | 2021-11-26 |
Family
ID=78904560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023075408.5U Withdrawn - After Issue CN214886995U (en) | 2020-12-18 | 2020-12-18 | Sea area natural gas hydrate self-entering type exploitation simulation test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214886995U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112360401A (en) * | 2020-12-18 | 2021-02-12 | 福州大学 | Sea area natural gas hydrate self-entering type exploitation simulation test device and test method thereof |
-
2020
- 2020-12-18 CN CN202023075408.5U patent/CN214886995U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112360401A (en) * | 2020-12-18 | 2021-02-12 | 福州大学 | Sea area natural gas hydrate self-entering type exploitation simulation test device and test method thereof |
| CN112360401B (en) * | 2020-12-18 | 2023-12-22 | 福州大学 | Sea area natural gas hydrate self-entering mining simulation test device and test method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4099567A (en) | Generating medium BTU gas from coal in situ | |
| CN108798608B (en) | Natural gas hydrate exploitation system and method | |
| CN109488259A (en) | It is handled up the method for replacement exploitation shallow-layer bulk I class hydrate system based on warm seawater-gravel | |
| CN112343558B (en) | Sea area natural gas hydrate barrel type exploitation simulation test device and test method thereof | |
| CN111827909A (en) | Active control method and device for well bore pressure in open-circuit circulating drilling of sea area natural gas hydrate | |
| CN105927268B (en) | Gas fires the anti-reflection pumping method in coal seam in a kind of induction extraction later stage drilling hole | |
| CN214886995U (en) | Sea area natural gas hydrate self-entering type exploitation simulation test device | |
| CN112343557B (en) | Sea area natural gas hydrate self-entry type exploitation device and exploitation method | |
| CN202000941U (en) | Downhole casing wall tapping device for oil well | |
| RU2262586C2 (en) | Borehole plant for simultaneous separate and alternate operation of several formations by single well | |
| CN114165197B (en) | Pressure-relief and permeability-increasing device and method for pulse hydraulic fracturing coal seam | |
| CN106703761B (en) | Hydrocarbon production system and its working method in dry type water | |
| CN112081559A (en) | Device and method for extracting natural gas hydrate by depressurization and double-pipe injection of modified fluid | |
| CN111827941A (en) | Intelligent oil field injection-production real-time optimization and regulation simulation experiment system and method | |
| CN116263084A (en) | Drilling and production system and method for offshore natural gas hydrate development | |
| CN114198066A (en) | Sea natural gas hydrate desanding exploitation device and desanding exploitation method thereof | |
| JP7297353B1 (en) | Natural gas hydrate - shallow gas - deep gas multi-source multi-method joint mining system and method | |
| CN112360401A (en) | Sea area natural gas hydrate self-entering type exploitation simulation test device and test method thereof | |
| CN213807642U (en) | Sea area natural gas hydrate cartridge type exploitation simulation test device | |
| CN202645526U (en) | Jet flow sand blasting cracking device | |
| CN200985782Y (en) | Operating tool string for gas well fracturing and production put | |
| CN202900199U (en) | Oil layer perforation ground high-pressure injection apparatus | |
| CN111577237A (en) | Water hammer composite fracturing process method for low-permeability oil field | |
| CN110604074A (en) | Drilling type artificial upflow coral protection method and device | |
| CN219259579U (en) | Abandoned oil-based drilling fluid treatment device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20211126 Effective date of abandoning: 20231222 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20211126 Effective date of abandoning: 20231222 |