CN210357062U - Preparation facilities of fine and close diagenetic rock natural gas hydrate - Google Patents
Preparation facilities of fine and close diagenetic rock natural gas hydrate Download PDFInfo
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- CN210357062U CN210357062U CN201921055034.5U CN201921055034U CN210357062U CN 210357062 U CN210357062 U CN 210357062U CN 201921055034 U CN201921055034 U CN 201921055034U CN 210357062 U CN210357062 U CN 210357062U
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- natural gas
- gas hydrate
- cold water
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- 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 84
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000011435 rock Substances 0.000 title claims description 9
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 80
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 64
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 63
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 60
- 239000003345 natural gas Substances 0.000 claims abstract description 37
- 239000007789 gas Substances 0.000 claims abstract description 19
- 238000003860 storage Methods 0.000 claims abstract description 10
- 238000002347 injection Methods 0.000 claims abstract description 8
- 239000007924 injection Substances 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims 5
- 230000002194 synthesizing effect Effects 0.000 claims 3
- 238000000034 method Methods 0.000 abstract description 8
- 238000011161 development Methods 0.000 abstract description 3
- 238000002474 experimental method Methods 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 abstract description 2
- -1 natural gas hydrates Chemical class 0.000 description 12
- 230000008569 process Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 230000035484 reaction time Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000203 mixture Substances 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
- 150000002894 organic compounds Chemical class 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model provides a fine and close diagenesis type natural gas hydrate's preparation facilities relates to natural gas hydrate's preparation field, and the device includes basin, natural gas cylinder, vacuum pump, cold water storage jar, hydraulic press and natural gas hydrate synthesizer, basin, precooling system, water injection pump link to each other with high-pressure atomizer in order, and natural gas cylinder, precooling system, gas booster pump, high-pressure atomizer link to each other in order, and high-pressure atomizer sets up in the synthesis reactor. The utility model discloses can realize customizing stratum natural gas hydrate's synthesis, provide technical support for the development of experiment test data and follow-up natural gas hydrate's exploitation technique.
Description
Technical Field
The utility model relates to natural gas hydrate's preparation technical field, especially a fine and close lithogenous natural gas hydrate's preparation facilities.
Background
Natural Gas Hydrate (Natural Gas Hydrate/Gas Hydrate), white crystalline solid organic compound which looks like ice or dense snow, of formula CH4·xH2And O. The combustible ice 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 the conditions of high pressure (more than 10MPa) and low temperature (less than 10 ℃), and is a non-stoichiometric clathrate of the natural gas and the water. 1 cubic meter of combustible ice can be converted to 164 cubic meters of natural gas and 0.8 cubic meters of water. During exploitation, a large amount of methane gas can be released only by heating and decompressing the solid natural gas hydrate. Under high pressure, the methane gas water inclusion compound can still maintain stability at the temperature of 18 ℃. Typical methane gas water compounds consist of 1 mole of methane and 5.75 moles of water per mole, however this ratio depends on how many methane molecules are "embedded" in the various coating structures of the crystal lattice. The observed density was about 0.9cm³. One liter of methane gas water clathrate solids, under standard conditions, contains an average of 168 liters of methane gas.
The generation of natural gas hydrate has no special requirement on water quality, and the water containing a certain amount of impurities can generate the natural gas hydrate more easily. The formation of natural gas hydrates must satisfy three conditions: (1) the material base for forming natural gas hydrate, namely water and small molecular hydrocarbon material; (2) the conditions of certain temperature (less than 10 ℃) and pressure (more than 10MPa) need to be met; (3) the presence of crystalline centers gives the hydrate the basis for growth development.
According to the above-mentioned conditions for forming natural gas hydrates, since natural gas hydrates are more easily formed when impurities are present in water, it is considered that a rock-forming natural gas hydrate is manufactured by adding a proper amount of impurities, i.e., a certain amount of gravel, in the process of forming natural gas hydrates.
The natural gas hydrate has the characteristics of high energy, high density, stable performance, small environmental pollution, simple preparation technology, safe storage and the like, so the synthesis and preparation of the natural gas hydrate have high research significance.
In the experimental stage, the difficulty of taking the natural gas hydrate is high, the cost is high, so that the artificial natural gas hydrate can be selected as an experimental material, the artificial natural gas hydrate is practical and convenient, and the economic cost is greatly reduced. In view of the above problems, several patented technologies have been developed for the synthesis of natural gas hydrates. For example, CN108192684A, a chinese patent "continuous preparation device of lump combustible ice and preparation method thereof", discloses a device capable of generating and taking out artificial natural gas hydrate, and also discloses a "rapid hydrate synthesis device" CN106010698, which utilizes a spray device in combination with a bubbling method to rapidly synthesize natural gas hydrate. In both JP2005263825A and US8354565B1, water and natural gas are mixed and then injected into a reactor through a jet device by a high-pressure pump to generate natural gas hydrate directly or under a stirring device of a stirrer. Chinese patent CN200951393Y, a spray-enhanced hydrate continuous preparation device, utilizes an atomizer to atomize water from a nozzle at the top of a reactor to generate natural gas hydrate.
1. The above-mentioned natural gas hydrate cannot truly simulate the state of the natural hydrate generated in the formation, and the existing device has a low yield in the process of forming the product, and cannot be manufactured in industrial mass production, so it is needed to be improved.
2. Most of the generated natural gas hydrates cannot form formed natural gas hydrates, further cannot be applied in a laboratory in an experiment, cannot be placed in a core holder of the laboratory, and can simulate formation conditions to carry out gas drive replacement or chemical drive replacement on methane in the natural gas hydrates, so that the natural gas hydrates can be mined under the simulated real natural conditions, correspondingly required experimental data can be obtained, and a scheme for mining the natural gas hydrates under the natural conditions is further formulated.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve the defect that above-mentioned prior art exists, to gas hydrate's formation condition, provided one kind can be independently set for gas hydrate under pressure, the different geological conditions of temperature simulation, provide data support for experimental study.
The utility model adopts the following technical scheme:
the utility model provides a fine and close lithogenesis class natural gas hydrate's preparation facilities, includes basin, natural gas cylinder, vacuum pump, cold water storage jar, hydraulic press and natural gas hydrate synthesizer, basin, inlet tube, precooling system, water injection pump, high-pressure atomizer are connected in order, and natural gas cylinder, intake pipe, precooling system, gas booster pump, high-pressure atomizer are connected in order, installs pressure sensor on the pipeline that gas booster pump and high-pressure atomizer are connected, high-pressure atomizer is installed in natural gas hydrate synthesizer's synthetic reactor, cold water holding vessel, precooling system, cold water circulating pump are connected in order, cavity intercommunication in cold water circulating pump and the natural gas hydrate synthesizer casing, cavity export and cold water holding vessel intercommunication, on the pipeline between thermometer system, cold water circulating pump, the hydraulic stem of hydraulic press and the hydraulic piston setting of depression bar tip are synthetic reaction in natural gas hydrate synthesizer In the device, the vacuum pump is communicated with the high-pressure atomizer.
The further technical scheme is that a rubber sealing ring is installed on the hydraulic piston.
The further technical scheme is that the device also comprises a synthesis reactor threaded cover on the natural gas synthesis device cover, and four corners of the synthesis reactor threaded cover are provided with four fixing nut mounting holes.
The further technical proposal is that the diameter of the hydraulic piston is slightly smaller than the inner diameter of the synthesis reactor.
The further technical proposal is that the synthesis reactor can be in the shape of a hollow cylinder or a hollow cuboid and the like.
The further technical proposal is that a certain amount of gravel is added into the synthesis reactor before the synthesis reaction begins.
The utility model has the advantages that:
1) the utility model discloses can make into rock class natural gas hydrate to can simulate the natural hydrate that different geological conditions generated according to the experiment needs, through designing different pressure condition, different temperature coefficient, the different shell shapes that enclose, thereby make different shapes, different sand content, different methane and with the natural gas hydrate of water proportion.
2) The utility model discloses when making rock class natural gas hydrate, after adding the grit in the synthesis reactor, add water earlier, let in the natural gas after, the operation can make the grit fully mix with water like this, behind the rethread natural gas, generates natural gas hydrate between the grit, then can make rock class natural gas hydrate. Compared with the prior art in which water and natural gas are introduced simultaneously, the method can not cause that the generated natural gas hydrate cannot be mixed with gravel components.
3) The synthesis of the formation natural gas hydrate can be customized, and technical support is provided for experimental test data and development of a subsequent natural gas hydrate exploitation technology.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of a natural gas hydrate synthesis plant;
in the figure: the system comprises a 1-hydraulic press, a 2-hydraulic rod, a 3-fixing nut, a 4-natural gas hydrate synthesis device cover, a 5-hydraulic piston, a 6-rubber sealing ring, a 7-natural gas hydrate synthesis device, an 8-synthesis reactor, 9-condensation circulating water, a 10-synthesis reactor threaded cover, an 11-thermometer, a 12-cold water circulating pump, a 13-precooling system c, a 14-cold water storage tank, a 15-vacuum pump a, a 16-vacuum pump b, a 17-water tank, an 18-water inlet pipe, a 19-precooling system a, a 20-water injection pump, a 21-pressure sensor, a 22-gas booster pump, a 23-precooling system b, a 24-gas inlet pipe, a 25-natural gas cylinder and a 26-high-pressure atomizer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention are described clearly and completely below, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative effort belong to the protection scope of the present invention.
The utility model provides a preparation facilities of tight lithogenesis class natural gas hydrate, includes basin 17, natural gas cylinder 25, vacuum pump (a15, b16), cold water storage jar 14, hydraulic press 1 and natural gas hydrate synthesizer 7, basin 17, inlet tube 18, precooling system a19, water injection pump 20, high pressure atomizer 26 connect in order, and natural gas cylinder 25, intake pipe 24, precooling system b23, gaseous booster pump 22, high pressure atomizer 26 connect in order, installs pressure sensor 21 on the pipeline that gaseous booster pump 22 and high pressure atomizer 26 are connected, high pressure atomizer 26 is installed in the synthetic reactor 8 of natural gas hydrate synthesizer 7, cold water storage tank 14, precooling system C13, cold water circulating pump 12 connect in order, and thermometer 11 installs on the pipeline between precooling system C13, cold water circulating pump 14, cavity intercommunication in cold water circulating pump 12 and the natural gas hydrate synthesizer 7 casing, the cavity outlet is communicated with a cold water storage tank 14, a hydraulic rod 2 of the hydraulic press 1 and a hydraulic piston 5 at the end part of the hydraulic rod are arranged in a synthesis reactor 8 in a natural gas hydrate synthesis device 7, and the vacuum pump (a15/b16) is communicated with a high-pressure atomizer 26.
The further technical scheme is that a rubber sealing ring is arranged on the hydraulic piston 5.
The further technical scheme is that the device also comprises a synthesis reactor threaded cover 10 on the natural gas synthesis device cover 4, and four mounting holes of the four fixing nuts 3 are arranged at four corners of the synthesis reactor threaded cover 10.
The further technical proposal is that the diameter of the hydraulic piston 5 is slightly smaller than the inner diameter of the synthesis reactor 8.
The further technical proposal is that the synthesis reactor 8 can be in the shape of a hollow cylinder or a hollow cuboid and the like.
The utility model discloses a diagenesis gas hydrate's preparation facilities, include, the device is through adding an amount of gravel and sealed fixed in synthetic reactor 8 in advance, and water enters into synthetic reactor 8 through water injection pump 20, and the natural gas utilizes the pressure boost of gas booster pump 22 to enter into synthetic reactor 8. The natural gas hydrate synthesizer 7 is cooled by a cold water circulating pump 12. The above process can achieve the material conditions and external conditions required for the formation of natural gas hydrate, and the corresponding pressure and temperature.
Specifically, as shown in fig. 1-2, a certain amount of gravel is added into a synthesis reactor 8 in a natural gas hydrate synthesis apparatus 7, a synthesis reactor screw cap 10 is installed at a position corresponding to the synthesis reactor 8 in the natural gas hydrate synthesis apparatus 7, a hydraulic piston 5 of a hydraulic rod 2 of a hydraulic press 1 is inserted into the synthesis reactor 8 of the natural gas hydrate synthesis apparatus 7 from a corresponding hole on a natural gas hydrate synthesis apparatus cap 4, the natural gas hydrate synthesis apparatus cap 4 is installed on the natural gas hydrate synthesis apparatus 7, and fixing nuts 3 at four corners are installed and fixed, so that a closed environment is created, and air in the synthesis reactor 8 is evacuated by using vacuum pumps (a15, b 16).
The water in the water tank 17 is fed into the synthesis reactor 8 in the natural gas hydrate synthesis apparatus 7 by the action of the water injection pump 20, and the natural gas in the natural gas cylinder 25 is fed into the synthesis reactor 8 in the natural gas hydrate synthesis apparatus 7 by the gas booster pump 22. And in the process of introducing water and natural gas, cold water in a cold water storage tank 14 enters a cavity of a shell of the natural gas hydrate synthesis device 7 to circulate through a cold water circulating pump 12.
The above process achieves the physical and external conditions, and the corresponding pressure and temperature, required for the formation of natural gas hydrates.
After the reaction time reaches a certain upper limit, the hydraulic machine 1 is opened, and the unformed diagenetic natural gas hydrate in the synthesis reactor 8 of the natural gas hydrate synthesis device 7 is pressurized by the hydraulic piston 5 connected with the hydraulic rod 2 on the hydraulic machine 1, so that the diagenetic natural gas hydrate with a certain shape can be formed quickly.
The water and the natural gas which participate in the synthesis of the natural gas hydrate are cooled by the precooling system before entering the synthesis reactor 8, so that the external condition of the synthesis of the natural gas hydrate is reached as soon as possible, and the reaction time of the natural gas hydrate is shortened.
The water and the natural gas which participate in the synthesis of the natural gas hydrate are subjected to temperature reduction treatment by a precooling system (a15, b16) before entering the synthesis reactor 8, so that the external condition of the synthesis of the natural gas hydrate is reached as soon as possible, and the reaction time of the natural gas hydrate is shortened.
During the synthesis of the natural gas hydrate in the synthesis reactor 8, the natural gas is controlled by the gas booster pump 22 and the pressure sensor 21, so that the pressure 8 in the synthesis reactor is always stabilized within a set pressure range. The cold water in the cavity of the shell of the natural gas hydrate synthesis device 7 is controlled by a cold water circulating pump 12, a precooling system C13 and a thermometer 11, so that the temperature in the synthesis reactor 8 is always kept within the set temperature. The exterior of the natural gas hydrate synthesis device 7 is protected by a heat insulation material to reduce energy consumption.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (9)
1. The utility model provides a fine and close lithogenesis class natural gas hydrate's preparation facilities, a serial communication port, including natural gas cylinder, the vacuum pump, cold water holding vessel, hydraulic press and natural gas hydrate synthesizer, the basin, the water injection pump, the high-pressure atomizer is connected in order, natural gas cylinder, gaseous booster pump, the high-pressure atomizer is connected in order, the high-pressure atomizer is installed in natural gas hydrate synthesizer's synthetic reactor, cold water storage jar, precooling system, cold water circulating pump are connected in order, cold water circulating pump is connected with natural gas hydrate synthesizer's shell cavity, the exit linkage cold water storage jar entry of shell cavity, the hydraulic stem and the tip of hydraulic press set up in synthetic reactor, the high-pressure atomizer still links to each other with the vacuum pump.
2. The apparatus of claim 1, wherein a quantity of gravel is placed in the synthesis reactor prior to the synthesis reaction.
3. The apparatus for preparing compacted rock natural gas hydrate according to claim 1, wherein the synthesis reactor is a hollow vessel, and the specific shape is customized according to the requirement.
4. The apparatus for preparing compacted rock natural gas hydrate according to claim 1, further comprising a cover of the natural gas hydrate synthesizing apparatus, wherein the cover is mounted on the natural gas hydrate synthesizing apparatus, and holes for mounting fixing nuts are provided at four corners of the cover of the natural gas hydrate synthesizing apparatus.
5. The apparatus for preparing compacted rock natural gas hydrate according to claim 1, wherein the end of the hydraulic rod is provided with a hydraulic piston, and a sealing rubber ring is arranged on the hydraulic piston.
6. The apparatus for preparing compacted rock natural gas hydrate according to claim 1 or 5, wherein the diameter of the hydraulic piston is slightly smaller than the inner diameter of the synthesis reactor.
7. The apparatus according to claim 1, wherein the water tank is connected to the water tank via a water inlet pipe, and a pre-cooling system a is installed on a pipeline connecting the water inlet pipe to the water injection pump.
8. The apparatus for preparing dense rock-forming natural gas hydrate according to claim 1 or 7, further comprising a gas inlet pipe and a pre-cooling system b, wherein an inlet end of the gas inlet pipe is connected with a natural gas cylinder, an outlet end of the gas inlet pipe is installed on the pre-cooling system b, an outlet end of the pre-cooling system b is connected with a gas booster pump, and a pressure sensor is further arranged on a pipeline connecting the gas booster pump and the high-pressure atomizer.
9. The apparatus according to claim 1, wherein a thermometer is installed on the pipeline between the pre-cooling system a and the cold water circulating pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921055034.5U CN210357062U (en) | 2019-07-08 | 2019-07-08 | Preparation facilities of fine and close diagenetic rock natural gas hydrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921055034.5U CN210357062U (en) | 2019-07-08 | 2019-07-08 | Preparation facilities of fine and close diagenetic rock natural gas hydrate |
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| Publication Number | Publication Date |
|---|---|
| CN210357062U true CN210357062U (en) | 2020-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921055034.5U Expired - Fee Related CN210357062U (en) | 2019-07-08 | 2019-07-08 | Preparation facilities of fine and close diagenetic rock natural gas hydrate |
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| CN (1) | CN210357062U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110305705A (en) * | 2019-07-08 | 2019-10-08 | 西南石油大学 | A kind of preparation facilities and preparation method of diagenesis class natural gas hydrate |
| CN113029714A (en) * | 2021-02-04 | 2021-06-25 | 广东石油化工学院 | Preparation method and preparation device of artificial core containing natural gas hydrate |
-
2019
- 2019-07-08 CN CN201921055034.5U patent/CN210357062U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110305705A (en) * | 2019-07-08 | 2019-10-08 | 西南石油大学 | A kind of preparation facilities and preparation method of diagenesis class natural gas hydrate |
| CN113029714A (en) * | 2021-02-04 | 2021-06-25 | 广东石油化工学院 | Preparation method and preparation device of artificial core containing natural gas hydrate |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20200421 |