CN115492566A - Device for realizing multistage hydrate in-situ separation and desanding through series-parallel combination - Google Patents
Device for realizing multistage hydrate in-situ separation and desanding through series-parallel combination Download PDFInfo
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- CN115492566A CN115492566A CN202211303232.5A CN202211303232A CN115492566A CN 115492566 A CN115492566 A CN 115492566A CN 202211303232 A CN202211303232 A CN 202211303232A CN 115492566 A CN115492566 A CN 115492566A
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- 238000000926 separation method Methods 0.000 title claims abstract description 48
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 15
- 239000004576 sand Substances 0.000 claims abstract description 59
- 239000002002 slurry Substances 0.000 claims description 42
- 210000001503 joint Anatomy 0.000 claims description 34
- 239000011268 mixed slurry Substances 0.000 claims description 13
- 238000011084 recovery Methods 0.000 claims description 13
- 238000007599 discharging Methods 0.000 claims description 5
- 150000004677 hydrates Chemical class 0.000 claims description 5
- 238000000746 purification Methods 0.000 claims description 3
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 claims 3
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000005553 drilling Methods 0.000 description 4
- 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 description 4
- 239000011324 bead Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- XURIQWBLYMJSLS-UHFFFAOYSA-N 1,4,7,10-tetrazacyclododecan-2-one Chemical compound O=C1CNCCNCCNCCN1 XURIQWBLYMJSLS-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/34—Arrangements for separating materials produced by the well
- E21B43/38—Arrangements for separating materials produced by the well in the well
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/34—Arrangements for separating materials produced by the well
- E21B43/38—Arrangements for separating materials produced by the well in the well
- E21B43/385—Arrangements for separating materials produced by the well in the well by reinjecting the separated materials into an earth formation in the same well
Abstract
The invention discloses a device for realizing in-situ separation and desanding of a multistage hydrate by series-parallel combination, and mainly solves the problems that a separation device in the prior art cannot simultaneously meet the requirements of large treatment capacity, high treatment precision, incapability of backfilling sand in real time and the like. The device includes the outer tube, the top that the cover was put at the outer tube both ends connects and the bottom connects, the sand discharge pipe of putting in the outer tube periphery is overlapped, the multistage setting forms the inner tube of empty pipeline inside the outer tube and with the outer tube, install the spiral separator inside the inner tube and with bottom articulate, the first class middle part that one end and spiral separator are connected connects to and one end and first class middle part articulate, the other end and top articulate and realize the hydrocyclone separation device of establishing ties with spiral separator. Through the scheme, the invention achieves high precision and large treatment capacity, simultaneously meets the aim of backfilling sand in real time, and has very high practical value and popularization value.
Description
Technical Field
The invention belongs to the technical field of petroleum drilling, and particularly relates to a device for realizing multistage hydrate in-situ separation and sand removal by series-parallel combination.
Background
The energy safety is the basis for guaranteeing the national sustainable development, and the energy consumption is increased sharply along with the vigorous development of the economy of China. Natural gas hydrate also called as combustible ice is unconventional clean energy (1 m) with high density and high heat value 3 The natural gas hydrate can release 164m 3 Methane gas and 0.8m 3 Water), which has huge reserves and has considerable commercial development prospect, and the efficient development of the natural gas hydrate can ensure the energy safety of China and realize the economic sustainable development. In recent years, the trial production results in the south China sea area show that sand is continuously produced in the trial production process, and the sand content in slurry is huge, so that the problems of difficult pipe transportation, large energy consumption of pipe transportation and the like are caused. The traditional sand control method and equipment cannot meet the long-term commercial exploitation of hydrates. To ensure sustainable commercial exploitation of marine hydrates, new sand removal equipment is urgently needed.
Aiming at removing the sand grains (the grain diameter is mainly concentrated at 20-30 mu m) of the Chinese hydrate reservoir, an in-situ separation technology based on a solid-state fluidization exploitation method is proposed, and some devices are invented corresponding to the technology. For example, in the Chinese patent, an offset symmetrical parallel type seabed shallow natural gas hydrate in-situ separation device with the application number of 201811412136.8 is provided with offset symmetrical large treatment capacity, and a double-layer tubular series spiral hydrate in-situ separation desanding device with the application number of 202210423852.6 is provided, the above patent mentions that a spiral separator or a cyclone separator is adopted in a series or parallel connection mode, and under the condition of the same pipe diameter, a single cyclone separator has the characteristics of high separation precision and large treatment capacity. The parallel multilayer tubular cyclone separating device can solve the problem of insufficient treatment capacity theoretically, but the length of a tube string is increased sharply when the tube diameter is limited. The series spiral separation device solves the problem that the separation precision is not high enough, but causes the length of the pipe string to be increased sharply. Although the device solves the problems of large treatment capacity or high separation precision, the device cannot simultaneously meet the requirements of large treatment capacity and high treatment precision, and has no special sand discharge structure, so that the separated sand cannot be discharged to be close to the drill bit end for backfilling in real time. Therefore, how to solve the problems in the prior art is a great need for those skilled in the art to solve the problems.
Disclosure of Invention
The invention aims to provide a device for realizing in-situ separation and desanding of a multistage hydrate by series-parallel combination, and mainly solves the problems that a separation device in the prior art cannot meet the requirements of treatment capacity and high treatment precision at the same time, sand cannot be backfilled in real time and the like.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a serial-parallel combination device for realizing multistage hydrate in-situ separation and desanding comprises an outer pipe, a top connector and a bottom connector, wherein the top connector and the bottom connector are sleeved at two ends of the outer pipe and are provided with a jet flow channel and a recovery channel simultaneously; the cyclone separation device adopts a parallel input mode to carry out secondary separation on the primary hydrate slurry separated from the spiral separator.
Further, the spiral separator comprises a spiral separation inlet positioned at the front end, a spiral separation cavity positioned in the middle and communicated with the spiral separation inlet, and a separator recovery channel and a spiral sand discharge channel positioned at the rear end and communicated with the spiral separation cavity, wherein the spiral sand discharge channel is communicated with the sand discharge channel and is externally connected with a one-way valve to prevent separated hydrate slurry from flowing back.
Furthermore, the cyclone separation device comprises a plurality of cyclone separators which are input in parallel and are positioned in the inner pipe, and a second type middle joint for connecting two adjacent cyclone separators, wherein each cyclone separator comprises an overflow port, an underflow port and a plurality of separator inlets which are uniformly distributed at the top of a cylindrical section of each cyclone separator, the underflow port of the first stage cyclone separator is connected with the other end of the first type middle joint, and the overflow port of the last stage cyclone separator is connected with the top joint.
The first-class middle joint comprises a plurality of first-class convex ribs which are arranged on the periphery of the first-class middle joint at intervals and are sealed with the outer pipe, a first series channel which is arranged at one end of the bottom of the first-class middle joint and is used for connecting a separator recovery channel and discharging the hydrate mixed slurry after first purification into a first-stage cyclone separator, a second series channel which is arranged inside the first-class middle joint and is communicated with the first series channel and is of a Z-shaped structure, a bottom flow port first channel which is arranged at one end of the top of the first-class middle joint and is communicated with a bottom flow port of the first-stage cyclone separator, a first-class sand discharge channel which is arranged inside the first-class middle joint, is communicated with the sand discharge channel at one end and is communicated with the bottom flow port first channel at the other end, a middle sand discharge channel which is arranged at one end of the bottom of the first-class middle joint and is communicated with a spiral sand discharge channel, and a middle inner pipe installation groove which is arranged at the bottom of the first-class middle joint and is used for installing the inner pipe, wherein the second series channel opens towards one end of the top joint, and a gap between the adjacent first-class convex ribs and the outer pipe form a jet flow channel.
The second type middle joint comprises a first overflow channel, an overflow connecting channel, a bottom flow port second channel, a second type sand discharging channel, a mixed slurry channel, a thread groove, a plurality of second type convex edges and two limiting plates, wherein the first overflow channel is arranged at one end of the bottom of the second type middle joint and used for connecting an overflow port of the first-stage cyclone separator; wherein the overflow connecting channel is opened towards one end of the top joint; the overflow connecting channel and the mixed slurry channel are respectively positioned in two areas formed by the middle limiting plate, and the gaps between the adjacent second type convex ridges and the outer pipe form jet flow channels.
Specifically, the top connects including the hydrate slurry discharge passage who is used for connecting upper portion cyclone overflow mouth, set up inside and one end and hydrate slurry discharge passage intercommunication, other end opening be located cyclone one end and with the hydrate slurry passage of overflow connecting channel intercommunication at the top joint, the setting connects the top boss that is located cyclone one end and is used for installing the inner tube at the top, a plurality of intervals set up and connect the periphery and realize sealed top bead with the outer tube at the top, two set up the top mounting groove that connects the periphery at the top, and install in the top mounting groove and will adjacent two top limiting plates that connect the cavity to fall into two independent areas, wherein, the clearance and the outer tube of adjacent top bead form jet flow channel.
Compared with the prior art, the invention has the following beneficial effects:
(1) The invention is provided with the series-parallel combined separator, after the collected hydrate mixed slurry is primarily separated by the spiral separator, the primarily separated hydrate slurry is secondarily separated in the cyclone separation device, and because the handling capacity of the spiral separator is greater than that of the cyclone separator, the cyclone separation device adopts parallel input, thus meeting the requirement of large processing. Meanwhile, the cyclone separator can separate and discharge sand in the primarily separated hydrate slurry again, so that high-precision hydrate is obtained.
(2) The sand discharge pipe is arranged on the periphery of the outer pipe to form a sand discharge channel, sand separated from the separator is discharged into the sand discharge channel under the centrifugal action and moves downwards under the action of self gravity, and the bottom of the sand discharge pipe is arranged on the bottom connector, so that the separated sand can backfill a treaded cavity of a reservoir formed by mining hydrate in real time, and the stability of the reservoir is guaranteed.
Drawings
FIG. 1 is a schematic view of the present invention.
Fig. 2 is a sectional view of fig. 1.
Fig. 3 is a cross-sectional view of fig. 1 after rotation.
Fig. 4 is a schematic structural view of the top connector of the present invention.
Fig. 5 is a top view of fig. 4.
FIG. 6 is a top view of a first type of intermediate joint according to the present invention.
FIG. 7 is a cross-sectional view of a first type of intermediate joint according to the present invention.
Fig. 8 is a top view of a second type of middle joint of the present invention.
Fig. 9 isbase:Sub>A cross-sectional view taken atbase:Sub>A-base:Sub>A in fig. 8.
Fig. 10 is a cross-sectional view at B-B in fig. 8.
In the drawings, the names of the components corresponding to the reference numerals are as follows:
1-outer tube, 2-top joint, 21-hydrate slurry discharge channel, 22-hydrate slurry channel, 23-top boss, 24-top limiting plate, 25-top fin, 26-top mounting groove, 3-bottom joint, 4-sand drain, 5-inner tube, 6-spiral separator, 61-spiral separation inlet, 62-separator recovery channel, 63-spiral sand drain channel, 7-first type middle joint, 71-first type fin, 72-first series channel, 73-second series channel, 74-first channel, 75-first type sand drain channel, 76-middle sand drain channel, 77-middle inner tube mounting groove, 8-cyclone separator, 81-overflow, 82-bottom flow port, 83-separator inlet, 9-second type middle joint, 91-first overflow channel, 92-overflow connection channel, 93-bottom flow port second channel, 94-second type sand drain channel, 95-mixed slurry channel, 96-thread groove, 97-second type fin mounting groove, 98-middle limiting plate, 99-middle limiting plate.
Detailed Description
The present invention is further illustrated by the following figures and examples, which include, but are not limited to, the following examples.
Examples
As shown in fig. 1 to 10, a device for realizing in-situ separation and desanding of a multi-stage hydrate by series-parallel combination comprises an outer tube 1, a top joint 2 and a bottom joint 3 which are sleeved at two ends of the outer tube 1 and are provided with a jet flow channel and a recovery channel at the same time, a sand discharge pipe 4 which is sleeved at the periphery of the outer tube 1 and forms a sand discharge channel with the outer tube 1, a plurality of sections of inner tubes 5 which are arranged inside the outer tube 1 and form an empty pipeline with the outer tube 1, a spiral separator 6 which is arranged inside the inner tube 5 and is connected with the bottom joint 3, a first middle joint 7 of which one end is connected with the spiral separator 6, and a cyclone separation device of which one end is connected with the first middle joint 7 and the other end is connected with the top joint 2 and is connected with the spiral separator 6 in series; wherein, the cyclone separation device adopts a parallel input mode to carry out secondary separation on the primary hydrate slurry separated from the spiral separator 6.
The installation step: the mounting principle is from inside to outside and from bottom to top. Firstly, a spiral separator 6 is arranged on a bottom connector 3, a separator recovery channel 62 is communicated with a hydrate mixed slurry recovery channel of the bottom connector 3, an inner pipe 5 positioned outside the spiral separator 6 is sleeved outside the spiral separator 6, a first-type middle connector 7 is arranged, and a joint is subjected to waterproof treatment. Then, a first-stage cyclone separator is installed at the upper end of the first-stage middle connector 7, a bottom flow port 82 of the first-stage cyclone separator is connected with the first channel 74, one end of a middle limiting plate 99 is installed in a notch of the middle installation groove 98 for limiting and shunting, then an inner pipe is sleeved outside the first-stage cyclone separator, if the cyclone separator is only provided with two stages, a second-stage middle connector 9 for connecting the two-stage cyclone separator is installed according to the structure shown in the attached drawings 9 and 10, and if the two-stage cyclone separator is exceeded, a through channel for discharging hydrate slurry separated by the preceding-stage cyclone separator to the hydrate slurry channel 22 needs to be arranged on one side of the overflow connecting channel 92 through the second-stage connector. And after the last stage of cyclone separator is installed, the outer pipe 1 is installed outside the inner pipe, and one-way valves are installed at all sand discharge passage openings to prevent sand from flowing back. Then the top joint 2 is installed at the upper part of the hydrate slurry discharge channel 21 of the top joint 2 is communicated with the separator recovery channel 62 of the last stage cyclone separator, and finally, a sand discharge pipe 4 is arranged outside the outer pipe 1, the bottom of the sand discharge pipe 4 is arranged on the bottom joint, and a sand discharge channel is arranged on the bottom joint. All the joints are sealed, the primary hydrate slurry entering from the second series channel 73 is divided into two areas by the middle limiting plate after entering the cyclone separation device, and therefore the installation position of the second middle joint needs to be noticed during installation, so that one area is ensured to be the primary hydrate slurry, and the other area is the hydrate slurry after secondary separation. The pipes are fastened by channel screws.
The working process comprises the following steps: the bottom connector 3 is externally connected with downhole tools needed by a nozzle, a drill bit, a pump and the like, the hydrate slurry discharge channel 21 of the top connector 2 is externally connected with a double-layer continuous pipe, the double-layer continuous pipe is connected with a pump set outlet on a ship or a drilling platform, and the pump set on the sea surface ship provides power. The method comprises the steps of firstly starting a pump, pumping jet flow slurry into a double-layer continuous pipe inner and outer pipe annular space, reaching downhole tools such as a jet flow crushing nozzle and a guide drill bit through a top jet flow channel, a jet flow channel and a bottom jet flow channel, providing crushing power for the jet flow crushing nozzle, achieving jet flow crushing of a hydrate reservoir stratum, and enabling the hydrate reservoir stratum to form hydrate mixed slurry.
The method comprises the steps that hydrate mixed slurry mined from a reservoir enters a spiral separation inlet 61 of a spiral separator 6 through a bottom connector 3 to be subjected to primary separation, sand is discharged into a sand discharge channel through a spiral sand discharge channel 63 of a sand channel, the primarily separated hydrate slurry enters a cyclone separation device through a first series channel 72 and a second series channel 73 from a separator recovery channel 62, the primarily separated hydrate slurry enters a primary hydrate cavity formed by an inner pipe 5, the cyclone separator and two limiting plates, when the primarily separated hydrate slurry flows into a separator inlet 83 of a first-stage cyclone separator, one part of the primarily separated hydrate slurry enters the first-stage cyclone separator to be separated, the other part of the primarily separated hydrate slurry continues to enter the second-stage cyclone separator from bottom to top through a mixed slurry channel 95, when the primarily separated hydrate slurry flows into a separator inlet of the second-stage cyclone separator, one part of the primarily separated hydrate slurry enters the second-stage cyclone separator to be separated, and when the primarily separated hydrate slurry flows into the third-stage cyclone separator, the primarily separated hydrate slurry continues to flow into the second-stage cyclone separator at least until the last-stage cyclone separator continues to be operated. The sand separated from the cyclone separator is discharged into a sand discharge pipeline through a second sand discharge channel 94, the hydrate slurry separated from the first-stage cyclone separator flows into a hydrate slurry cavity formed by the second-stage cyclone separator, the inner pipe and limiting plates on two sides through a first overflow channel 91 and a second overflow channel, and when only two stages of cyclone separators exist, the separated hydrate is discharged into a collecting device on the sea surface through a hydrate slurry channel 22 and a hydrate slurry discharge channel 21 and a double-layer continuous pipe externally connected with the hydrate slurry channel. If the cyclone separators are more than two stages, hydrate slurry separated from the first-stage cyclone separator to the penultimate cyclone separator is discharged upwards through a through channel on a second middle joint to the last-stage cyclone separator, and finally all separated hydrates are discharged into a collecting device on the sea surface through a hydrate slurry channel 22 and a hydrate slurry discharge channel 21 through a double-layer continuous pipe externally connected with the hydrate slurry channel.
The terms "inner", "outer", "upper" and "lower" as used herein are used in reference to the specific installation location of the device of the present application (e.g., fig. 2 and 3), wherein the hydrate recovery passageway is the passageway indicated by the arrow in fig. 3 and the passageway indicated by the arrow in fig. 2, the jet passageway (which is used for transporting seawater or drilling fluid from the sea surface to the nozzle and the drill bit, providing power for jet fracturing of the hydrate reservoir, cooling and carrying debris for drilling by the drill bit) is the passageway indicated by the arrows on both sides in fig. 3, and the sand discharge passageway is the passageway indicated by the arrow in fig. 3.
The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, but all changes that can be made by applying the principles of the present invention and performing non-inventive work on the basis of the principles shall fall within the scope of the present invention.
Claims (6)
1. The device is characterized by comprising an outer pipe (1), a top connector (2) and a bottom connector (3) which are sleeved at two ends of the outer pipe (1) and are provided with a jet flow channel and a recovery channel at the same time, a sand discharge pipe (4) which is sleeved at the periphery of the outer pipe (1) and forms a sand discharge channel with the outer pipe (1), a plurality of sections of inner pipes (5) which are arranged inside the outer pipe (1) and form an annular pipeline with the outer pipe (1), a spiral separator (6) which is arranged inside the inner pipe (5) and is connected with the bottom connector (3), a first type of middle connector (7) of which one end is connected with the spiral separator (6), and a cyclone separation device of which one end is connected with the first type of middle connector (7) and the other end is connected with the top connector (2) and is connected with the spiral separator (6) in series; the cyclone separation device adopts a parallel input mode to carry out secondary separation on the primary hydrate slurry separated from the spiral separator (6).
2. The device for realizing multistage hydrate in-situ separation and desanding in series-parallel combination according to claim 1, wherein the spiral separator (6) comprises a spiral separation inlet (61) at the front end, a spiral separation cavity at the middle part and communicated with the spiral separation inlet (61), and a separator recovery channel (62) and a spiral sand discharge channel (63) at the rear end and communicated with the spiral separation cavity, wherein the spiral sand discharge channel (63) is communicated with the sand discharge channel and externally connected with a one-way valve to prevent backflow of separated hydrate slurry.
3. The device for realizing multistage hydrate in-situ separation and desanding by series-parallel combination according to claim 2, wherein the cyclone separation device comprises a plurality of cyclones (8) which are input in parallel and are arranged in the inner pipe (5), and a second type middle joint (9) for connecting two adjacent cyclones, wherein each cyclone (8) comprises an overflow port (81) and an underflow port (82), and a plurality of separator inlets (83) which are uniformly distributed at the top of the cylindrical section of each cyclone (8), the underflow port (82) of the first stage cyclone is connected with the other end of the first type middle joint (7), and the overflow port (81) of the last stage cyclone is connected with the top joint (2).
4. The device for realizing in-situ separation and sand removal of multiple stages of hydrates through series-parallel combination as claimed in claim 3, wherein the first-type middle joint (7) comprises a plurality of first-type ribs (71) which are arranged at intervals on the periphery of the first-type middle joint (7) and are sealed with the outer pipe (1), a first series channel (72) which is arranged at one end of the bottom of the first-type middle joint (7) and is used for connecting the recovery channel (62) of the separator and discharging the hydrate mixed slurry after first purification into the first-stage cyclone separator, a second series channel (73) which is arranged in the first-type middle joint (7), is communicated with the first series channel (72) and is of a Z-shaped structure, a bottom flow port first channel (74) which is arranged at one end of the top of the first-type middle joint (7) and is used for communicating with a bottom flow port (82) of the first-stage cyclone separator, a first-type sand discharge channel (75) which is arranged in the first-type middle joint (7) and is communicated with the sand discharge channel at one end thereof, and is communicated with the bottom flow port first channel (74), a spiral channel (77) which is arranged at one end of the first-type middle joint (7) and is used for communicating with the inner pipe (7), and is arranged at one end of the spiral channel (77) and is arranged at the bottom of the inner pipe (7), and is arranged at the top of the inner pipe (7), the gap between the adjacent first type of convex edges and the outer pipe (1) form a jet flow channel.
5. The device for realizing in-situ separation and desanding of the multistage hydrates through series-parallel combination as claimed in claim 4, wherein the second middle intermediate joint (9) comprises a first overflow channel (91) which is arranged at one end of the bottom of the second middle intermediate joint (9) and is used for connecting the overflow port (81) of the first-stage cyclone separator, an overflow connecting channel (92) which is arranged inside the second middle intermediate joint (9), is communicated with the first overflow channel (91) and is of a Z-like structure, and a bottom flow port second channel (93) which is arranged at one end of the top of the second middle intermediate joint (9) and is used for connecting the bottom flow port (82) of the last-stage cyclone separator (8), a second type sand discharge channel (94) which is arranged inside a second type middle joint (9), one end of the second type sand discharge channel is communicated with the sand discharge channel, the other end of the second type sand discharge channel is communicated with a bottom flow port second channel (93), a mixed slurry channel (95) which is arranged in the middle of the second type middle joint (9) in a penetrating manner and is used for discharging hydrate mixed slurry after primary purification into a rear-stage cyclone separator, thread grooves (96) which are arranged outside two ends of the second type middle joint and are used for being in threaded connection with an inner pipe (5), a plurality of second type convex ribs (97) which are arranged at the periphery of the second type middle joint (9) at intervals and are sealed with an outer pipe (1), two middle mounting grooves (98) which are arranged at the periphery of the second type middle joint (9), and a middle limit which is arranged in the middle mounting groove (98) and divides two adjacent joint cavities into two independent areas A position plate (99); wherein the overflow connection channel (92) opens towards one end of the top connector (2); the overflow connecting channel (92) and the mixed slurry channel (95) are respectively located in two areas formed by the middle limiting plate (99), and the gap between the adjacent second type of convex ribs and the outer pipe (1) form a jet flow channel.
6. The device for realizing multistage hydrate in-situ separation and desanding in series-parallel combination as claimed in claim 5, wherein the top connector (2) comprises a hydrate slurry discharge channel (21) for connecting an overflow port (81) of the upper cyclone separator, a hydrate slurry channel (22) which is arranged inside the top connector (2) and one end of which is communicated with the hydrate slurry discharge channel (21) and the other end of which is open at one end of the cyclone separator and is communicated with an overflow connection channel (92), a top boss (23) which is arranged at one end of the cyclone separator and is used for installing the inner tube (5) at the top connector (2), a plurality of top ribs (25) which are arranged at the periphery of the top connector (2) and are sealed with the outer tube (1), two top mounting grooves (26) which are arranged at the periphery of the top connector (2), and a top portion (24) which is arranged in the top mounting groove (98) and divides two adjacent connector cavities into two independent areas, wherein a gap between the two adjacent top ribs and the limiting plate (1) form a jet flow channel.
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| CN202211303232.5A CN115492566B (en) | 2022-10-24 | 2022-10-24 | Multistage hydrate in-situ separation sand removal device realized by serial-parallel combination |
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| CN202211303232.5A CN115492566B (en) | 2022-10-24 | 2022-10-24 | Multistage hydrate in-situ separation sand removal device realized by serial-parallel combination |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5902378A (en) * | 1997-07-16 | 1999-05-11 | Obrejanu; Marcel | Continuous flow downhole gas separator for processing cavity pumps |
| CA2600602A1 (en) * | 2006-09-07 | 2008-03-07 | Weatherford/Lamb, Inc. | Annulus pressure control drilling systems and methods |
| CN103104240A (en) * | 2013-01-15 | 2013-05-15 | 中国石油大学(华东) | Downhole oil-water separation device with multistage hydrocyclones in parallel |
| CN104389578A (en) * | 2014-12-05 | 2015-03-04 | 北京化工大学 | Offshore large-displacement downhole oil-water separation device with chemical agent injection function |
| US20170191314A1 (en) * | 2008-08-20 | 2017-07-06 | Foro Energy, Inc. | Methods and Systems for the Application and Use of High Power Laser Energy |
| CN109184658A (en) * | 2018-11-25 | 2019-01-11 | 西南石油大学 | A kind of biasing symmetric parallel formula sea-bottom shallow gas hydrates in-situ separating device |
| CN109882147A (en) * | 2019-03-16 | 2019-06-14 | 西南石油大学 | A kind of integral type hydrate situ downhole separation shunting means of high throughput |
| CN110029983A (en) * | 2019-05-21 | 2019-07-19 | 华东理工大学 | Multiple-stage separator |
| CN110206527A (en) * | 2019-01-04 | 2019-09-06 | 西南石油大学 | A kind of high throughput hydrate underground separation shunting means using spiral separator |
| CN113153235A (en) * | 2021-04-29 | 2021-07-23 | 南方海洋科学与工程广东省实验室(湛江) | Underground hydraulic breaking, recovering and separating device for natural gas hydrate |
| WO2022083588A1 (en) * | 2020-10-20 | 2022-04-28 | 中国石油化工股份有限公司 | Continuous gas separation system combining hydrate-based process and reverse osmosis process and disturbance device |
| CN114961662A (en) * | 2022-04-21 | 2022-08-30 | 宜宾学院 | Cyclone series double-layer tubular hydrate in-situ separation device |
-
2022
- 2022-10-24 CN CN202211303232.5A patent/CN115492566B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5902378A (en) * | 1997-07-16 | 1999-05-11 | Obrejanu; Marcel | Continuous flow downhole gas separator for processing cavity pumps |
| CA2600602A1 (en) * | 2006-09-07 | 2008-03-07 | Weatherford/Lamb, Inc. | Annulus pressure control drilling systems and methods |
| US20170191314A1 (en) * | 2008-08-20 | 2017-07-06 | Foro Energy, Inc. | Methods and Systems for the Application and Use of High Power Laser Energy |
| CN103104240A (en) * | 2013-01-15 | 2013-05-15 | 中国石油大学(华东) | Downhole oil-water separation device with multistage hydrocyclones in parallel |
| CN104389578A (en) * | 2014-12-05 | 2015-03-04 | 北京化工大学 | Offshore large-displacement downhole oil-water separation device with chemical agent injection function |
| CN109184658A (en) * | 2018-11-25 | 2019-01-11 | 西南石油大学 | A kind of biasing symmetric parallel formula sea-bottom shallow gas hydrates in-situ separating device |
| CN110206527A (en) * | 2019-01-04 | 2019-09-06 | 西南石油大学 | A kind of high throughput hydrate underground separation shunting means using spiral separator |
| CN109882147A (en) * | 2019-03-16 | 2019-06-14 | 西南石油大学 | A kind of integral type hydrate situ downhole separation shunting means of high throughput |
| CN110029983A (en) * | 2019-05-21 | 2019-07-19 | 华东理工大学 | Multiple-stage separator |
| WO2022083588A1 (en) * | 2020-10-20 | 2022-04-28 | 中国石油化工股份有限公司 | Continuous gas separation system combining hydrate-based process and reverse osmosis process and disturbance device |
| CN113153235A (en) * | 2021-04-29 | 2021-07-23 | 南方海洋科学与工程广东省实验室(湛江) | Underground hydraulic breaking, recovering and separating device for natural gas hydrate |
| CN114961662A (en) * | 2022-04-21 | 2022-08-30 | 宜宾学院 | Cyclone series double-layer tubular hydrate in-situ separation device |
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