CN113417610A - Modularized natural gas hydrate solid-state fluidization exploitation device - Google Patents
Modularized natural gas hydrate solid-state fluidization exploitation device Download PDFInfo
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- CN113417610A CN113417610A CN202110867343.8A CN202110867343A CN113417610A CN 113417610 A CN113417610 A CN 113417610A CN 202110867343 A CN202110867343 A CN 202110867343A CN 113417610 A CN113417610 A CN 113417610A
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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 40
- 238000005243 fluidization Methods 0.000 title claims abstract description 22
- 239000013535 sea water Substances 0.000 claims abstract description 110
- 238000002347 injection Methods 0.000 claims abstract description 72
- 239000007924 injection Substances 0.000 claims abstract description 72
- 230000033001 locomotion Effects 0.000 claims abstract description 33
- 239000007787 solid Substances 0.000 claims abstract description 12
- 230000005540 biological transmission Effects 0.000 claims description 45
- 239000003638 chemical reducing agent Substances 0.000 claims description 34
- 238000005065 mining Methods 0.000 claims description 11
- 238000003466 welding Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 8
- 239000010432 diamond Substances 0.000 claims description 7
- 229910003460 diamond Inorganic materials 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 238000005728 strengthening Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 7
- 239000002245 particle Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Natural products C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 239000013049 sediment Substances 0.000 description 3
- -1 Natural gas hydrates Chemical class 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 230000002572 peristaltic effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/01—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/0099—Equipment or details not covered by groups E21B15/00 - E21B40/00 specially adapted for drilling for or production of natural hydrate or clathrate gas reservoirs; Drilling through or monitoring of formations containing gas hydrates or clathrates
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Earth Drilling (AREA)
Abstract
A modularized gas hydrate solid fluidization exploitation device. The problems that an existing natural gas hydrate exploitation drill bit cannot move flexibly on a natural gas hydrate layer, exploitation cost is high, and exploitation period is short are mainly solved. The method is characterized in that: the device comprises a drill bit module, a jet flow module, a front moving module, a telescopic module, a rear moving module, a lifting module and a seawater injection module; the drill bit module (1), the jet flow module (2), the forward moving module (3), the telescopic module (4), the backward moving module (5), the lifting module (6) and the seawater injection module (7) are connected by taper threads; the telescopic module, the drill bit module, the jet flow module, the front moving module and the rear moving module are mutually matched and used for realizing the movement of the device on a natural gas hydrate layer.
Description
Technical Field
The invention relates to a solid fluidization exploitation device applied to the field of natural gas hydrate exploitation.
Background
Natural gas hydrates, i.e. combustible ice, are ice-like crystalline substances distributed in deep sea sediments or permafrost in land areas, formed by natural gas and water under high pressure and low temperature conditions, mainly located in sediments with a thickness of about 300-500 m. It is known as "future energy" because of its high energy density, small combustion pollution, wide distribution and large storage capacity. Because of the special and complex environment of the sea bottom, and the methane gas decomposed by natural gas hydrate is a strong greenhouse gas, the exploitation path and method of natural gas hydrate are still in the research and test stage at present. The prior related documents disclose a solid-state fluidization exploitation method, but a drill bit of a natural gas hydrate exploitation device under the exploitation method cannot be flexibly moved in a natural gas hydrate layer at low cost, and the problems of high exploitation cost and short exploitation period exist.
Disclosure of Invention
In order to solve the technical problems mentioned in the background technology, the invention provides a modularized natural gas hydrate solid-state fluidization exploitation device, by which a drill bit of the exploitation device can be conveniently moved on a hydrate layer, the drilling and exploitation efficiency is improved, the defect that the existing equipment is inconvenient to move is overcome, and the exploitation period is prolonged; in addition, the device adopts modularization and is convenient to process and install.
The technical scheme of the invention is as follows: the modularized natural gas hydrate solid fluidization exploitation device comprises a drill bit module 1, a jet flow module 2, a forward moving module 3, a telescopic module 4, a backward moving module 5, a lifting module 6 and a seawater injection module 7.
The drill bit module 1 comprises a drill bit 101, a diamond 102, a transmission rod 103, a fixed pin 104, a sealing bearing 105, a coupler 106, a motor shaft 107, a drill bit motor 108, a drill bit motor fixed support 109 and a drill bit module sleeve 110; wherein, the drill bit 101 is provided with a diamond 102 for grinding the natural gas hydrate; the right side of the transmission rod 103 is provided with threads and is in matched connection with the left side of the drill bit 101 through the threads; a seal bearing 105 is disposed between the drive rod 103 and the drill bit module sleeve 110 for supporting, friction reducing, and sealing; the fixing pin 104 is used for strengthening the fixation between the drill bit 101 and the transmission rod 103; the coupler 106 connects the right side of the motor shaft 107 and the left side of the transmission rod 103; a bit motor mount 109 is disposed between the bit motor 108 and the bit module sleeve 110.
The jet module 2 comprises a jet motor 201, a jet module internal fixing support 202, a high-pressure plunger pump 203, an inlet check valve 206, an outlet check valve 207, an inlet pipe 208, an outlet pipe 209, a jet nozzle 210, a jet filter 211 and a jet module sleeve 212; the jet flow motor 201 and the high-pressure plunger pump 203 are fixed in the inner wall of a jet flow module sleeve 212 through screws by the internal fixed support 202 of the jet flow module; the jet filter 211 is fixed in the inner wall of the jet module sleeve 212 through threads and is used for filtering impurities to avoid the damage of the high-pressure plunger pump 203; the lower end of the jet filter 211 is in threaded connection with the upper end of an inlet pipe 208, the lower end of the inlet pipe 208 is in threaded connection with an inlet check valve 206, the inlet check valve 206 is used for avoiding backflow, and the lower end of the inlet check valve 206 is in threaded connection with an inlet 204 of the high-pressure plunger pump; the upper end of the outlet 205 of the high-pressure plunger pump is in threaded connection with the lower end of an outlet one-way valve 207, the outlet one-way valve 207) is used for avoiding backflow, the upper end 207 of the outlet one-way valve is in threaded connection with the lower end of an outlet pipe 209, and the outlet pipe 209 penetrates through a jet module sleeve 212 to be fixedly sealed through threads.
The front moving module 3 comprises a front moving module motor 301, a front moving module reducer 302, a front moving module transmission rod 303, a front moving module piston 304, a front moving module hydraulic cylinder 305, a front moving module load 306, a front moving module internal fixed support 307 and a front moving module sleeve 308; the forward moving module reducer 302 is used for converting rotary motion into linear motion and performing speed reduction treatment, and outputting the linear motion and the speed reduction treatment through a forward moving module transmission rod 303, and the forward moving module transmission rod 303 is in threaded connection with a forward moving module piston 304; the front moving module hydraulic cylinder 305 is embedded in the wall of the front moving module sleeve 308 and is fixedly sealed through threads; the forward moving module piston 304, the forward moving module load 306 and the forward moving module hydraulic cylinder 305 are sealed and supported by piston rings; the front moving module inner fixed support 307 fixes the front moving module motor 301, the front moving module reducer 302 and the front moving module hydraulic cylinder 305 on the inner wall of the front moving module sleeve 308 through welding; the front end of the front moving module sleeve 308 is provided with a taper thread for connecting with the jet module, and the rear end is provided with a matched threaded hole for connecting with the telescopic module load 406; four sets of front moving module motors 301, front moving module reducers 302, front moving module transmission rods 303, front moving module pistons 304, front moving module hydraulic cylinders 305, front moving module loads 306 and front moving module internal fixed supports 307 are arranged in the front moving module and are distributed in the vertical and front and back directions.
The telescopic module 4 comprises a telescopic module motor 401, a telescopic module speed reducer 402, a telescopic module transmission rod 403, a telescopic module piston 404, a telescopic module hydraulic cylinder 405, a telescopic module load 406, a telescopic module internal fixed support 407 and a telescopic module sleeve 408; the telescopic module speed reducer 402 is used for converting rotary motion into linear motion and performing speed reduction processing, and outputting the linear motion and the speed reduction processing through a telescopic module transmission rod 403, and the telescopic module transmission rod 403 is in threaded connection with a telescopic module piston 404; the front end of the telescopic module hydraulic cylinder 405 is embedded in the wall of a telescopic module sleeve 408, and a telescopic module piston 404, a telescopic module load 406 and the telescopic module hydraulic cylinder 405 are sealed and supported through piston rings; the telescopic module motor 401, the telescopic module speed reducer 402 and the telescopic module hydraulic cylinder 405 are fixed on the inner wall of the telescopic module casing 408 by the telescopic module internal fixing support 407 through welding.
The rear moving module 5 comprises a rear moving module motor 501, a rear moving module reducer 502, a rear moving module transmission rod 503, a rear moving module piston 504, a rear moving module hydraulic cylinder 505, a rear moving module load 506, a rear moving module inner fixed support 507 and a rear moving module sleeve 508; the rear moving module speed reducer 502 is used for converting rotary motion into linear motion and performing speed reduction treatment, and the linear motion is output through a rear moving module transmission rod 503, and the rear moving module transmission rod 503 is in threaded connection with a rear moving module piston 504; the rear moving module hydraulic cylinder 505 is embedded in the wall of the rear moving module sleeve 508 and is fixedly sealed through threads; the rear moving module piston 504, the rear moving module load 506 and the rear moving module hydraulic cylinder 505 are sealed and supported by piston rings; a rear moving module motor 501, a rear moving module reducer 502 and a rear moving module hydraulic cylinder 505 are fixed on the inner wall of a rear moving module sleeve 508 by a rear moving module internal fixing support 507 through welding; tapered threads are designed at the front end and the rear end of the sleeve pipe 508 of the rear moving module and are respectively connected with the telescopic module and the lifting module; four sets of rear moving module motors 501, rear moving module reducers 502, rear moving module transmission rods 503, rear moving module pistons 504, rear moving module hydraulic cylinders 505, rear moving module loads 506 and rear moving module internal fixed supports 507 are arranged in the rear moving module in the up-down and front-back directions.
The lifting module 6 comprises a lifting motor 601, a centrifugal pump 602, a lifting inlet pipe 603, a lifting filter 604, a lifting outlet pipe 605, a lifting module internal fixed support 606 and a lifting module sleeve 607; the lifting filter 604 is embedded in the wall of the lifting module sleeve 607 and fixed by screw threads; the lower end of the lifting filter 604 is in threaded connection with the upper end of a lifting inlet pipe 603, and the lower end of the lifting inlet pipe 603 is in threaded connection with a centrifugal pump inlet 608; the lifting outlet pipe 605 is embedded in the wall of the lifting module casing 607 and fixed through threads, and the right end of the lifting outlet pipe 605 is in threaded connection with the outlet 609 of the centrifugal pump; the lifting motor 601 and the centrifugal pump 602 are fixed on the inner wall of the lifting module casing 607 by the lifting module inner fixing support 606 through screws.
The seawater injection module 7 comprises a seawater injection motor 701, a seawater injection pump 702, a seawater injection module internal fixing support 703, a seawater suction pipe 704, a seawater one-way valve 705, a seawater injection pipe 706, a seawater injection pump inlet 707, a seawater outlet 708 and a seawater injection module sleeve 709; the periphery of the seawater injection module 7 is closed, and a seawater injection motor 701 and a seawater injection pump 702 are fixed on the inner wall of a sleeve 709 of the seawater injection module through screws by a fixed support 703 inside the seawater injection module; the upper end of the seawater suction pipe 704 is in threaded connection with the wall of a sleeve 709 of the seawater injection module, and the lower end of the seawater suction pipe is in threaded connection with an inlet 707 of the seawater injection pump; the lower end of the seawater inlet/outlet pump outlet 708 is in threaded connection with the upper end of a seawater one-way valve 705, and the lower end of the seawater one-way valve 705 is in threaded connection with the upper end of a seawater injection pipe 706; the seawater injection pipe penetrates through a seawater injection module sleeve 709, is fixedly sealed through threads, and the lower end of the seawater injection pipe extends to a mining layer where the drill bit module is located; the lift outlet pipe 605 passes through the seawater injection module and is fixedly sealed by threads, the upper end of which extends to the sea.
The drill bit module, the jet flow module, the front moving module, the telescopic module, the rear moving module, the lifting module and the seawater injection module are connected by taper threads; wherein the left end of the drill module sleeve 110 is equipped with a tapered thread for connection with a jet module; the left end and the right end of the jet module sleeve 212 are both provided with conical threads, the right end of the jet module sleeve is connected with the drill bit module, and the left end of the jet module sleeve is connected with the forward moving module; the right end of the front moving module sleeve 308 is provided with a tapered thread for connecting with the tapered thread at the left end of the jet module; the left end of the telescopic module sleeve 408 is provided with a taper thread for connecting with the rear moving module; the left end of the reach out mobile sleeve 508 is equipped with a tapered thread for connection with the lifting module.
The invention has the following beneficial effects: firstly, the seawater injection module injects seawater into a mining layer where a drill bit is positioned, the drill bit module and the water jet module crush the natural gas hydrate into small particles, the natural gas hydrate is mixed with seawater to be in a solid fluidization state, and the lifting module lifts the solid fluidization natural gas hydrate to the sea; secondly, due to the adoption of a peristaltic motion mode that the rear part pushes the front part and the front part drags the rear part, the front moving module, the telescopic module and the rear moving module are matched with each other to realize the movement on a hydrate layer, the device can freely move on a hydrate production layer, and the drilling and production range is large; thirdly, the device adopts modularization, all modules are mutually independent, the processing and the manufacturing are convenient, all the modules are connected by threads, and the device has convenient installation and strong interchangeability; in addition, the device is applied to solid-state fluidization exploitation, and the risk of decomposing and releasing the compound is avoided.
Description of the drawings:
fig. 1 is a schematic diagram of the overall structure of the modular gas hydrate solid-state fluidization production device.
Fig. 2 is a schematic structural diagram of a drill bit module of the modular gas hydrate solid-state fluidization production device.
Fig. 3 is a schematic structural diagram of a jet module in the modular gas hydrate solid-state fluidization exploitation device.
Fig. 4 is a schematic structural diagram of a forward moving module in the modular natural gas hydrate mining device according to the invention.
Fig. 5 is a schematic structural diagram of a telescopic module in the modular natural gas hydrate mining device according to the invention.
Fig. 6 is a schematic structural view of a forward moving module in the modular natural gas hydrate mining device according to the present invention.
Fig. 7 is a schematic structural diagram of a lifting module in the modular gas hydrate mining apparatus of the present invention.
Fig. 8 is a schematic structural diagram of a seawater injection module in the modular natural gas hydrate mining apparatus of the present invention.
In the figure 101-drill bit, 102-diamond, 103-drive rod, 104-fixed pin, 105-sealed bearing, 106-coupling, 107-motor shaft, 108-drill motor configuration, 109-drill motor fixed support, 110-drill module sleeve, 201-jet motor, 202-jet module internal fixed support, 203-high pressure plunger pump, 206-inlet check valve, 207-outlet check valve, 208-inlet pipe, 209-outlet pipe, 210-jet nozzle, 211-jet filter, 212-jet module sleeve, 301-forward moving module motor, 302-forward moving module reducer, 303-forward moving module drive rod, 304-forward moving module piston, 305-forward moving module hydraulic cylinder, 306-forward moving module load, 307-forward moving module internal fixed mount, 308-forward moving module bushing, 401-telescoping module motor, 402-telescoping module retarder, 403-telescoping module drive rod, 404-telescoping module piston, 405-telescoping module hydraulic cylinder, 406-telescoping module load, 407-telescoping module internal fixed mount, 408-telescoping module bushing, 501-backward moving module motor, 502-backward moving module retarder, 503-backward moving module drive rod, 504-backward moving module piston, 505-backward moving module hydraulic cylinder, 506-backward moving module load, 507-backward moving module internal fixed mount, 508-backward moving module bushing, 601-lifting motor, 602-centrifugal pump, 603-lifting inlet pipe, 604-lifting filter, 605-lifting outlet pipe, 606-lifting module internal fixed support, 607-lifting module sleeve, 701-seawater injection motor, 702-seawater injection pump, 703-seawater injection module internal fixed support, 704-seawater suction pipe, 705-seawater check valve, 706-seawater injection pipe, 707-seawater injection pump inlet, 708-seawater outlet/inlet pump outlet, 709-seawater injection module sleeve.
The specific implementation mode is as follows:
the invention will be further described with reference to the accompanying drawings in which:
as shown in fig. 1, the natural gas hydrate mining device designed by blocking in fig. 2, 3, 4, 5, 6 and 7 has a drill motor 108 driving a drill 101 to rotate, a jet motor 201 driving a high-pressure plunger pump 203 to pressurize seawater and then spraying the seawater through a jet nozzle 210, under the combined action of the two, the natural gas hydrate is broken into particles, mixed with seawater and changed into a solid fluidization state, and a lifting motor 601 driving a centrifugal pump 602 to lift the solid fluidization state to the ground. While the above-mentioned apparatus is in operation, the rear moving module motor 501 drives the rear moving module load 506 to extend and fix all around. The telescoping module motor 401 operates and the telescoping module load 406 drives the drill bit module, the jet module and the forward moving module to push forward until the maximum extension of the telescoping module load 406 is reached. The front moving module motor 301 drives the front moving module load 306 to extend and fix around, the rear moving module motor 501 operates reversely to drive the rear moving module load 506 to retract, the telescopic module motor 401 operates reversely, and the telescopic module load 406 drives the rear hydraulic moving module and the lifting module to move forwards, so that the equipment moves in the hydrate layer 7.
The structure and the operation principle of these units will be described below.
The drill bit module consists of a drill bit, diamonds, a transmission rod, a fixing pin, a sealing bearing, a coupler, a motor shaft and a drill bit motor, wherein the drill bit motor is fixed on a support and a drill bit module sleeve; the drill bit is provided with a plurality of diamonds for better grinding the natural gas hydrate; the right side of the transmission rod is provided with threads and is in matched connection with the left side of the drill bit through the threads; the sealing bearing is used between the transmission rod and the drill bit module sleeve and plays roles in supporting, reducing friction and sealing; the fixed pin is used for strengthening the fixation between the drill bit and the transmission rod; the coupler is connected with the right side of the motor shaft and the left side of the transmission rod; the drill motor fixing support is arranged between the drill motor and the drill module sleeve and is fixed by screws;
the jet module consists of a jet motor, a fixed support inside the jet module, a high-pressure plunger pump, an inlet check valve, an outlet check valve, an inlet pipe, an outlet pipe, a jet nozzle, a jet filter and a jet module sleeve; the jet motor and the high-pressure plunger pump are fixed in the inner wall of the sleeve of the jet module through screws by the fixed support inside the jet module; the jet filter is fixed in the sleeve wall of the jet module through threads and mainly used for filtering larger impurities and avoiding the damage of the high-pressure plunger pump; the lower end of the jet filter is in threaded connection with the upper end of the inlet pipe, the lower end of the inlet pipe is in threaded connection with the inlet check valve, the inlet check valve is used for avoiding backflow, and the lower end of the inlet check valve is in threaded connection with the inlet of the high-pressure plunger pump; the upper end of the outlet of the high-pressure plunger pump is in threaded connection with the lower end of the outlet one-way valve, the outlet one-way valve is used for avoiding backflow, the upper end of the outlet one-way valve is in threaded connection with the lower end of the outlet pipe, and the outlet pipe penetrates through the sleeve of the jet module and is fixedly sealed through threads;
the front moving module consists of a front moving module motor, a front moving module reducer, a front moving module transmission rod, a front moving module piston, a front moving module hydraulic cylinder, a front moving module load, a front moving module internal fixed support and a front moving module sleeve; the front moving module speed reducer converts the rotary motion into linear motion and performs speed reduction treatment, and the linear motion is output through a front moving module transmission rod which is in threaded connection with a front moving module piston; the front moving module hydraulic cylinder is embedded in the sleeve wall of the front moving module and is fixedly sealed through threads; the piston of the forward moving module, the load of the forward moving module and the hydraulic cylinder of the forward moving module are sealed and supported through piston rings; a fixed support inside the front moving module fixes a front moving module motor, a front moving module reducer and a front moving module hydraulic cylinder on the inner wall of a front moving module sleeve by welding; the front end of the sleeve of the front moving module is provided with a taper thread for connecting with the jet module, and the rear end is provided with a threaded hole matched with the sleeve and connected with the load of the telescopic module; four sets of front moving module motors, front moving module reducers, front moving module transmission rods, front moving module pistons, front moving module hydraulic cylinders, front moving module loads and fixed supports inside the front moving modules are arranged inside the front moving modules and distributed in the upper direction, the lower direction and the front direction;
the telescopic module consists of a telescopic module motor, a telescopic module reducer, a telescopic module transmission rod, a telescopic module piston, a telescopic module hydraulic cylinder, a telescopic module load, a telescopic module internal fixed support and a telescopic module sleeve; the telescopic module speed reducer converts the rotary motion into linear motion and performs speed reduction treatment, and the linear motion is output through a telescopic module transmission rod which is in threaded connection with a telescopic module piston; the front end of the telescopic module hydraulic cylinder is embedded in the sleeve wall of the telescopic module, and a telescopic module piston, a telescopic module load and the telescopic module hydraulic cylinder are sealed and supported through piston rings; the fixed support inside the telescopic module fixes a telescopic module motor, a telescopic module reducer and a telescopic module hydraulic cylinder on the inner wall of a telescopic module sleeve by welding;
the rear moving module consists of a rear moving module motor, a rear moving module speed reducer, a rear moving module transmission rod, a rear moving module piston, a rear moving module hydraulic cylinder, a rear moving module load, a rear moving module internal fixed support and a rear moving module sleeve; the rear moving module speed reducer converts the rotary motion into linear motion and performs speed reduction treatment, the linear motion is output through a rear moving module transmission rod, and the rear moving module transmission rod is in threaded connection with a rear moving module piston; the rear moving module hydraulic cylinder is embedded in the sleeve wall of the rear moving module and is fixedly sealed through threads; the piston of the rear moving module, the load of the rear moving module and the hydraulic cylinder of the rear moving module are sealed and supported through piston rings; a fixed support inside the rear moving module fixes a rear moving module motor, a rear moving module reducer and a rear moving module hydraulic cylinder on the inner wall of a rear moving module sleeve by welding; the front end and the rear end of the rear moving module sleeve are provided with tapered threads which are respectively connected with the telescopic module and the lifting module; four sets of rear moving module motors, rear moving module reducers, rear moving module transmission rods, rear moving module pistons, rear moving module hydraulic cylinders, rear moving module loads and fixed supports inside the rear moving modules are distributed in the upper direction, the lower direction and the front direction;
the lifting module consists of a lifting motor, a centrifugal pump, a lifting inlet pipe, a lifting filter, a lifting outlet pipe, a fixed support inside the lifting module and a lifting module sleeve; the lifting filter is embedded in the casing wall of the lifting module and fixed through threads, and the lifting filter has the function of preventing large-particle impurities from damaging equipment; the lower end of the lifting filter is in threaded connection with the upper end of the lifting inlet pipe, and the lower end of the lifting inlet pipe is in threaded connection with the inlet of the centrifugal pump; the lifting outlet pipe is embedded in the casing wall of the lifting module and fixed through threads, and the right end of the lifting outlet pipe is in threaded connection with the outlet of the centrifugal pump; the lifting motor and the centrifugal pump are fixed on the inner wall of the lifting module sleeve by a fixed support inside the lifting module through screws;
the seawater injection module consists of a seawater injection motor, a seawater injection pump, a fixed support inside the seawater injection module, a seawater suction pipe, a seawater check valve, a seawater injection pipe, a seawater injection pump inlet, a seawater outlet and an outlet of the seawater inlet and outlet pump and a seawater injection module sleeve; the periphery of the seawater injection module is closed, and a seawater injection motor and a seawater injection pump are fixed on the inner wall of a sleeve of the seawater injection module through a fixed support inside the seawater injection module; the upper end of the seawater suction pipe is in threaded connection with the sleeve wall of the seawater injection module, and the lower end of the seawater suction pipe is in threaded connection with the inlet of the seawater injection pump; the lower end of an outlet of the seawater inlet/outlet pump is in threaded connection with the upper end of a seawater one-way valve, and the upper end of a seawater injection pipe at the lower end of the seawater one-way valve is in threaded connection; the seawater injection pipe penetrates through the seawater injection module sleeve, is fixedly sealed through threads, and the lower end of the seawater injection pipe extends to a mining layer where the drill bit module is located; the lifting outlet pipe penetrates through the seawater injection module and is fixedly sealed through threads, and the upper end of the lifting outlet pipe extends to the sea;
each module only has 1 group, and every group is 1, and it is by awl threaded connection to every module.
The left end of the drill bit module sleeve is provided with a taper thread for connecting with the jet module; the left end and the right end of the jet module sleeve are both provided with conical threads, the right end of the jet module sleeve is connected with the drill bit module, and the left end of the jet module sleeve is connected with the forward moving module; the right end of the sleeve of the front moving module is provided with a conical thread which is used for being connected with the conical thread at the left end of the jet module; the left end of the telescopic module sleeve is provided with a taper thread for connecting with the rear moving module; the left end of the extended moving sleeve is provided with a taper thread for connecting with the lifting module.
In the following, the movement process of the modular gas hydrate mining device is first described:
according to the working principle of the natural gas hydrate exploitation device, one movement cycle can be divided into two stages.
The first stage is as follows: the drill bit motor 108 drives the drill bit 101 to rotate, the jet flow motor 201 drives the high-pressure plunger pump 203 to pressurize the seawater, the seawater is sprayed out through the jet flow nozzle 210, under the combined action of the drill bit motor and the jet flow nozzle, the natural gas hydrate is crushed into particles, the particles are mixed with the seawater and become a solid fluidization state, and the lifting motor 601 drives the centrifugal pump 602 to lift the solid fluidization state upwards to the ground.
And a second stage: the rear moving module motor 501 drives the rear moving module load 506 to extend and fix all around. The telescoping module motor 401 operates and the telescoping module load 406 drives the drill bit module, the jet module and the forward moving module to push forward until the maximum extension of the telescoping module load 406 is reached. The front moving module motor 301 drives the front moving module load 306 to extend and fix around, the rear moving module motor 501 operates in reverse to drive the rear moving module load 506 to retract, the telescopic module motor 401 operates in reverse, and the telescopic module load 406 drives the rear hydraulic moving module and the lifting module to move forward.
The modularized natural gas hydrate exploitation device provided by the invention can be applied to deep sea sediments with the thickness of about 300-500 m. The device makes a new breakthrough on the basis of the existing natural gas hydrate solid-state fluidization exploitation device in an innovative way, and compared with the prior art, the device is more convenient to process and install, is more convenient to move on a hydrate layer, and prolongs the exploitation period. Taking actual exploitation as an example, the seawater injection module injects seawater into an exploitation layer where a drill bit is located, the drill bit module and the water jet module break natural gas hydrate into small particles, the natural gas hydrate is mixed with seawater to be in a solid fluidization state, the lifting module lifts the solid fluidization natural gas hydrate to the sea, and the front moving module, the telescopic module and the rear moving module are matched with each other to realize movement on the hydrate layer. The high-efficiency gas hydrate solid-state fluidization exploitation device with the modular design has the advantages of reasonable structural design, convenience in processing and installation, good exploitation effect and the like, has high practicability, and provides certain technical support for advancing in the field of gas hydrate exploitation.
Claims (1)
1. A modularized natural gas hydrate solid fluidization exploitation device comprises a drill bit module (1), a jet flow module (2), a forward moving module (3), a telescopic module (4), a backward moving module (5), a lifting module (6) and a seawater injection module (7);
the drill bit module (1) comprises a drill bit (101), a diamond (102), a transmission rod (103), a fixing pin (104), a sealing bearing (105), a coupler (106), a motor shaft (107), a drill bit motor (108), a drill bit motor fixing support (109) and a drill bit module sleeve (110); wherein, the drill bit (101) is provided with diamonds (102) for grinding the natural gas hydrate; the right side of the transmission rod (103) is provided with threads and is in fit connection with the left side of the drill bit (101) through the threads; the sealing bearing (105) is arranged between the transmission rod (103) and the drill bit module sleeve (110) and plays roles in supporting, reducing friction and sealing; the fixing pin (104) is used for strengthening the fixation between the drill bit (101) and the transmission rod (103); the coupler (106) is connected with the right side of the motor shaft (107) and the left side of the transmission rod (103); the drill motor fixing support (109) is arranged between the drill motor (108) and the drill module sleeve (110);
the jet module (2) comprises a jet motor (201), a jet module internal fixing support (202), a high-pressure plunger pump (203), an inlet one-way valve (206), an outlet one-way valve (207), an inlet pipe (208), an outlet pipe (209), a jet nozzle (210), a jet filter (211) and a jet module sleeve (212); the jet flow motor (201) and the high-pressure plunger pump (203) are fixed in the inner wall of a jet flow module sleeve (212) through screws by a fixed support (202) in the jet flow module; the jet flow filter (211) is fixed in the wall of the jet flow module sleeve (212) through threads and is used for filtering impurities to avoid the damage of the high-pressure plunger pump (203); the lower end of the jet filter (211) is in threaded connection with the upper end of an inlet pipe (208), the lower end of the inlet pipe (208) is in threaded connection with an inlet check valve (206), the inlet check valve (206) is used for avoiding backflow, and the lower end of the inlet check valve (206) is in threaded connection with an inlet (204) of the high-pressure plunger pump; the upper end of a high-pressure plunger pump outlet (205) is in threaded connection with the lower end of an outlet one-way valve (207), the outlet one-way valve (207) is used for avoiding backflow, the upper end (207) of the outlet one-way valve is in threaded connection with the lower end of an outlet pipe (209), and the outlet pipe (209) penetrates through a jet module sleeve (212) to be fixedly sealed through threads;
the front moving module (3) comprises a front moving module motor (301), a front moving module reducer (302), a front moving module transmission rod (303), a front moving module piston (304), a front moving module hydraulic cylinder (305), a front moving module load (306), a front moving module inner fixed support (307) and a front moving module sleeve (308); the forward moving module speed reducer (302) is used for converting rotary motion into linear motion and performing speed reduction treatment, and outputting the linear motion and the speed reduction treatment through a forward moving module transmission rod (303), and the forward moving module transmission rod (303) is in threaded connection with a forward moving module piston (304); the forward moving module hydraulic cylinder (305) is embedded in the wall of a forward moving module sleeve (308) and is fixed and sealed through threads; the piston (304) of the forward moving module, the load (306) of the forward moving module and the hydraulic cylinder (305) of the forward moving module are sealed and supported through piston rings; a fixed support (307) in the front moving module fixes a motor (301) of the front moving module, a speed reducer (302) of the front moving module and a hydraulic cylinder (305) of the front moving module on the inner wall of a sleeve (308) of the front moving module by welding; the front end of the sleeve (308) of the forward moving module is provided with a taper thread for connecting with the jet module, and the rear end is provided with a threaded hole matched with the taper thread and connected with a telescopic module load (406); four sets of front moving module motors (301), front moving module reducers (302), front moving module transmission rods (303), front moving module pistons (304), front moving module hydraulic cylinders (305), front moving module loads (306) and front moving module internal fixed supports (307) are distributed in the upper direction, the lower direction and the front direction;
the telescopic module (4) comprises a telescopic module motor (401), a telescopic module speed reducer (402), a telescopic module transmission rod (403), a telescopic module piston (404), a telescopic module hydraulic cylinder (405), a telescopic module load (406), a telescopic module internal fixed support (407) and a telescopic module sleeve (408); the telescopic module speed reducer (402) is used for converting rotary motion into linear motion and performing speed reduction treatment, and outputting the linear motion and the speed reduction treatment through a telescopic module transmission rod (403), and the telescopic module transmission rod (403) is in threaded connection with a telescopic module piston (404); the front end of the telescopic module hydraulic cylinder (405) is embedded in the wall of a telescopic module sleeve (408), and a telescopic module piston (404), a telescopic module load (406) and the telescopic module hydraulic cylinder (405) are sealed and supported through piston rings; a fixed support (407) in the telescopic module fixes a telescopic module motor (401), a telescopic module speed reducer (402) and a telescopic module hydraulic cylinder (405) on the inner wall of a telescopic module sleeve (408) through welding;
the rear moving module (5) comprises a rear moving module motor (501), a rear moving module reducer (502), a rear moving module transmission rod (503), a rear moving module piston (504), a rear moving module hydraulic cylinder (505), a rear moving module load (506), a rear moving module inner fixed support (507) and a rear moving module sleeve (508); the rear moving module speed reducer (502) is used for converting rotary motion into linear motion and performing speed reduction treatment, and the linear motion is output through a rear moving module transmission rod (503), and the rear moving module transmission rod (503) is in threaded connection with a rear moving module piston (504); the rear moving module hydraulic cylinder (505) is embedded in the wall of the rear moving module sleeve (508) and is fixed and sealed through threads; the piston (504) of the rear moving module, the load (506) of the rear moving module and the hydraulic cylinder (505) of the rear moving module are sealed and supported through piston rings; a fixed support (507) in the rear moving module fixes a rear moving module motor (501), a rear moving module reducer (502) and a rear moving module hydraulic cylinder (505) on the inner wall of a rear moving module sleeve (508) through welding; tapered threads are designed at the front end and the rear end of the rear moving module sleeve (508) and are respectively connected with the telescopic module and the lifting module; four sets of rear moving module motors (501), rear moving module reducers (502), rear moving module transmission rods (503), rear moving module pistons (504), rear moving module hydraulic cylinders (505), rear moving module loads (506) and rear moving module internal fixed supports (507) are arranged in the rear moving module and distributed in the upper direction, the lower direction and the front direction;
the lifting module (6) comprises a lifting motor (601), a centrifugal pump (602), a lifting inlet pipe (603), a lifting filter (604), a lifting outlet pipe (605), a lifting module internal fixing support (606) and a lifting module sleeve (607); the lifting filter (604) is embedded in the wall of the lifting module sleeve (607) and fixed through threads; the lower end of the lifting filter (604) is in threaded connection with the upper end of a lifting inlet pipe (603), and the lower end of the lifting inlet pipe (603) is in threaded connection with an inlet (608) of the centrifugal pump; the lifting outlet pipe (605) is embedded in the wall of the lifting module sleeve (607) and fixed through threads, and the right end of the lifting outlet pipe (605) is in threaded connection with the outlet (609) of the centrifugal pump; a fixed support (606) in the lifting module fixes a lifting motor (601) and a centrifugal pump (602) on the inner wall of a lifting module sleeve (607) through screws;
the seawater injection module (7) comprises a seawater injection motor (701), a seawater injection pump (702), a seawater injection module internal fixed support (703), a seawater suction pipe (704), a seawater one-way valve (705), a seawater injection pipe (706), a seawater injection pump inlet (707), a seawater outlet/inlet pump outlet (708) and a seawater injection module sleeve (709); the periphery of the seawater injection module (7) is closed, and a seawater injection motor (701) and a seawater injection pump (702) are fixed on the inner wall of a seawater injection module sleeve (709) through screws by a fixed support (703) in the seawater injection module; the upper end of the seawater suction pipe (704) is in threaded connection with the wall of a seawater injection module sleeve (709), and the lower end of the seawater suction pipe is in threaded connection with an inlet (707) of a seawater injection pump; the lower end of the seawater inlet/outlet pump outlet (708) is in threaded connection with the upper end of a seawater one-way valve (705), and the upper end of a seawater injection pipe (706) at the lower end of the seawater one-way valve (705) is in threaded connection; the seawater injection pipe (706) penetrates through a seawater injection module sleeve (709), is fixedly sealed through threads, and the lower end of the seawater injection pipe extends to a mining layer where the drill head module (1) is located; the lifting outlet pipe (605) passes through the seawater injection module (7) and is fixedly sealed by screw threads, and the upper end of the lifting outlet pipe extends to the sea;
the drill bit module (1), the jet flow module (2), the forward moving module (3), the telescopic module (4), the backward moving module (5), the lifting module (6) and the seawater injection module (7) are connected by taper threads; wherein the left end of the drill module sleeve (110) is provided with a taper thread for connecting with the jet module (2); the left end and the right end of the jet module sleeve (212) are both provided with tapered threads, the right end of the jet module sleeve is connected with the drill bit module, and the left end of the jet module sleeve is connected with the front moving module; the right end of the sleeve (308) of the forward moving module is provided with a taper thread which is used for being connected with the taper thread at the left end of the jet module (2); the left end of the telescopic module sleeve (408) is provided with a taper thread and is used for being connected with the rear moving module (5); the left end of the extended moving sleeve (508) is provided with a taper thread for connecting with the lifting module (6).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110867343.8A CN113417610A (en) | 2021-07-30 | 2021-07-30 | Modularized natural gas hydrate solid-state fluidization exploitation device |
| CN202210529425.6A CN114809995B (en) | 2021-07-30 | 2022-05-16 | Downhole natural gas hydrate exploitation device and method |
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| CN202110867343.8A CN113417610A (en) | 2021-07-30 | 2021-07-30 | Modularized natural gas hydrate solid-state fluidization exploitation device |
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| CN202210529425.6A Active CN114809995B (en) | 2021-07-30 | 2022-05-16 | Downhole natural gas hydrate exploitation device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114135267A (en) * | 2021-11-29 | 2022-03-04 | 西南石油大学 | Solid-state fluidization exploitation three-phase separation device for natural gas hydrate |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116754307B (en) * | 2023-08-10 | 2023-11-03 | 常州科德水处理成套设备股份有限公司 | Sewage treatment activated sludge detection sampler |
| CN117588187B (en) * | 2024-01-19 | 2024-03-19 | 山东成林石油工程技术有限公司 | Screw pump driven high-lift jet flow drainage device and use method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108049845B (en) * | 2018-02-02 | 2023-04-07 | 西南石油大学 | Method and device for lifting non-diagenetic natural gas hydrate in shallow seabed layer |
| CN208347745U (en) * | 2018-02-02 | 2019-01-08 | 西南石油大学 | A kind of non-diagenesis gas hydrates lifting device of sea-bottom shallow |
| CN108643869B (en) * | 2018-04-24 | 2020-08-04 | 西南石油大学 | Seabed shallow layer natural gas hydrate solid fluidization green mining device and method |
| CN108756828B (en) * | 2018-05-25 | 2020-09-25 | 西南石油大学 | Hydrate solid fluidization exploitation method and system under underbalance reverse circulation condition |
| CN111188598A (en) * | 2020-01-16 | 2020-05-22 | 西南石油大学 | Seabed shallow layer natural gas hydrate exploitation and double-pump lifting device |
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2021
- 2021-07-30 CN CN202110867343.8A patent/CN113417610A/en not_active Withdrawn
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114135267A (en) * | 2021-11-29 | 2022-03-04 | 西南石油大学 | Solid-state fluidization exploitation three-phase separation device for natural gas hydrate |
| CN114135267B (en) * | 2021-11-29 | 2023-05-05 | 西南石油大学 | Three-phase separation device for solid fluidization exploitation of natural gas hydrate |
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| CN114809995A (en) | 2022-07-29 |
| CN114809995B (en) | 2023-04-25 |
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