CN216922100U - Underwater gas-sand separator for middle-deep geothermal well - Google Patents
Underwater gas-sand separator for middle-deep geothermal well Download PDFInfo
- Publication number
- CN216922100U CN216922100U CN202220666880.6U CN202220666880U CN216922100U CN 216922100 U CN216922100 U CN 216922100U CN 202220666880 U CN202220666880 U CN 202220666880U CN 216922100 U CN216922100 U CN 216922100U
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- CN
- China
- Prior art keywords
- submersible pump
- electric submersible
- sand
- geothermal well
- separator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000004576 sand Substances 0.000 title claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 230000000903 blocking effect Effects 0.000 claims abstract description 6
- 238000005452 bending Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 5
- 238000005086 pumping Methods 0.000 abstract description 3
- 230000000630 rising effect Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 14
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000003809 water extraction Methods 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses an underwater gas-sand separator for a middle-deep geothermal well, which comprises a steam-water separator and an electric submersible pump which are arranged underwater in the geothermal well, wherein the steam-water separator is fixedly connected with a water pumping pipe of the electric submersible pump by virtue of a flange at the top end of the separator, a hole is formed in the top surface of the flange, a hole pipe which is slightly smaller than the cavity part of a pump body is arranged below the flange, the electric submersible pump is placed in a closed cavity wall without the hole, the electric submersible pump consists of an electric submersible pump body, a filter screen of the electric submersible pump and a motor of the electric submersible pump, a cone is formed at the bottom of the cavity wall, a sand outlet hole is formed in the vertical direction of the cone for removing sand in the separator, an annular sand baffle plate is arranged at the lowest end of the cone and is mainly used for blocking the impact of water flow rising to the sand, and an automatic air release device is arranged at the left upper end of the wall of the geothermal well. The utility model not only can realize the stable operation of the geothermal electric submersible pump, but also can clean associated gas and sand of the geothermal well at the source, and reduces the design requirements on the steam-water separator and the cyclone sand remover in the process of ground engineering.
Description
Technical Field
The utility model relates to steam-water separation equipment of a deep well water recovery system, in particular to an underwater gas-sand separator of a middle-deep geothermal well.
Background
The middle-deep geothermal well is mainly used for the application of winter heating of northern clean energy, and the application principle of the middle-deep geothermal well is that high-temperature geothermal water with the underground length of 1000-2500 m is conveyed to a heat exchange machine room through a submersible electric pump (the submersible electric pump is arranged in the well for 100-400 m), the temperature of the high-temperature geothermal water is reduced after heat exchange, and then the high-temperature geothermal water is returned to a water production layer. Because the screen pipe at the water taking layer part is damaged due to corrosion or excessive mining in the running process of the geothermal well, the damaged screen pipe can flush underground sand to the position of the submersible electric pump together and convey the sand to the ground, and the wear of the submersible electric pump and the blockage of heat exchange equipment in a machine room are easily caused. Meanwhile, due to the fact that associated gas exists in the underground heat reservoir, the associated gas can be exploited together in the exploitation process, gas can be separated out due to the change of pressure, water flow can be cut off when the gas flow is large, the instability of water extraction amount and cavitation of an electric submersible pump are easily caused, and a very large dangerous source exists when the associated gas (methane, carbon monoxide, natural gas and nitrogen oxide) is conveyed to a heat exchange machine room. It must be separated out.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an underwater gas-sand separator for a middle-deep geothermal well, aiming at the defects in the prior art.
The technical scheme is as follows: the underwater gas-sand separator for medium-deep geothermal well includes steam-water separator and electric submersible pump which are mounted in geothermal well, the steam-water separator is fixedly connected with pumping pipe of electric submersible pump by means of flange positioned on top end of separator, the top surface of the flange is equipped with a hole, under the flange a hole pipe which is slightly smaller than pump body cavity portion is mounted, the electric submersible pump is placed in a closed cavity wall without hole, and is formed from electric submersible pump body, electric submersible pump filter screen and electric submersible pump motor, the bottom portion of cavity wall is formed into a cone body, the cone body is equipped with sand outlet hole in the longitudinal vertical direction, and can be used for removing sand from interior of separator, and its lowest end is equipped with ring-shaped sand-retaining plate mainly for blocking impact of water flow rising to sand, and the left upper end of geothermal well wall is equipped with automatic air-discharging device.
Preferably, the hole and the wall of the hole pipe form an angle of 60 degrees, a group of 2-4cm annular wall plates are welded between the holes and the inside of the equipment, the wall plates are inclined at an angle of 45 degrees, the annular wall plates are mainly used for blocking air and sand, and the length of the hole pipe is determined according to the associated gas quantity of the geothermal well.
Preferably, the bending degree of the annular sand blocking plate ranges from 30 degrees to 45 degrees.
Compared with the prior art, the utility model has the following advantages: in the geothermal well with larger gas output, if the steam-water separation device is not installed, the damage rate of the geothermal well pump is 50-60% higher than that under the normal use condition. When gas is too high, the water pump can form idle running, and the unstable operation can lead to a series of safety problems that influence the system operation, for example, the sealed of lifting pipe, the cable damage, the pump body is overheated. By adopting the device, the stable operation of the geothermal electric submersible pump can be realized, the associated gas and sand of the geothermal well can be removed at the source, and the design requirements on a steam-water separator and a cyclone sand remover in the ground engineering process are reduced.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
Referring to fig. 1, the underwater gas-sand separator of the middle-deep geothermal well comprises a steam-water separator and an electric submersible pump which are arranged in the geothermal well underwater, wherein the steam-water separator is fixedly connected with an electric submersible pump water lifting pipe by a flange 3 at the top end of the separator, a hole 2 is formed in the top surface of the flange 3, a hole pipe 4 which is slightly smaller than the cavity part of a pump body is arranged below the flange 3, the electric submersible pump is arranged in a closed cavity wall without holes, the electric submersible pump consists of an electric submersible pump body 5, an electric submersible pump filter screen 6 and an electric submersible pump motor 7, a cone is formed at the bottom of the cavity wall, a sand outlet 8 is arranged in the vertical direction of the cone, the lowest end of the cone is provided with an annular sand baffle plate 9, and the upper left end of the wall of the geothermal well is provided with an automatic air bleeder 1.
The hole and the wall on the hole pipe 4 form a 60-degree angle, a group of 2-4cm annular wall plates are welded in the equipment between the holes, the wall plates are inclined at an angle of 45 degrees, and the length of the hole pipe 4 is determined according to the associated gas quantity of the geothermal well.
The bending degree of the annular sand blocking plate 9 ranges from 30 degrees to 45 degrees.
The working principle is as follows: when the electric submersible pump is in the operation process, underground water and associated gas rise, vapor and sand can form upward pumping force, the gas is lighter and moves upwards all the time, and is finally blocked outside the steam-water separator 3, and is discharged in the automatic wellhead air bleeder 1 when rising above the liquid level and is finally collected by the collecting device, and the operation of the electric submersible pump cannot be influenced due to the fact that buffer liquid is already arranged in the inner cavity of the steam-water separator 3 and part of gas is separated. By adopting the method, the separation of the geothermal well sand and the gas can be realized at the source.
Claims (3)
1. Middle-deep geothermal well is gas sand separator under water which characterized in that: including catch water and electric submersible pump of installation under water in the geothermal well, catch water relies on flange (3) and the electric submersible pump lifting pipe fixed connection on separator top, porose (2) are seted up to the top surface of flange (3), install a hole pipe (4) that slightly littleer than pump body cavity part below flange (3), the electric submersible pump is placed in the chamber wall of a airtight nothing hole, the electric submersible pump is by the electric submersible pump body (5), electric submersible pump filter screen (6), electric submersible pump motor (7) are constituteed, chamber wall bottom forms a cone, the vertical direction of cone is equipped with out husky hole (8), the cone lower extreme is equipped with annular shelves sand board (9), the upper left end of the geothermal well wall of a well is equipped with automatic air bleeder (1).
2. The underwater gas-sand separator for the middle-deep geothermal well according to claim 1, wherein: the hole and the wall on the hole pipe (4) form an angle of 60 degrees, a group of 2-4cm annular wall plates are welded between the holes in the equipment, and the wall plates are inclined at an angle of 45 degrees.
3. The underwater gas-sand separator for the middle-deep geothermal well according to claim 1, wherein: the bending degree range of the annular sand blocking plate (9) is 30-45 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220666880.6U CN216922100U (en) | 2022-03-26 | 2022-03-26 | Underwater gas-sand separator for middle-deep geothermal well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220666880.6U CN216922100U (en) | 2022-03-26 | 2022-03-26 | Underwater gas-sand separator for middle-deep geothermal well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216922100U true CN216922100U (en) | 2022-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220666880.6U Active CN216922100U (en) | 2022-03-26 | 2022-03-26 | Underwater gas-sand separator for middle-deep geothermal well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216922100U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115075781A (en) * | 2022-07-11 | 2022-09-20 | 山东省煤田地质局第一勘探队 | Medium-deep geothermal well co-well exploitation and irrigation device |
-
2022
- 2022-03-26 CN CN202220666880.6U patent/CN216922100U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115075781A (en) * | 2022-07-11 | 2022-09-20 | 山东省煤田地质局第一勘探队 | Medium-deep geothermal well co-well exploitation and irrigation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Underwater gas sand separator for medium and deep geothermal wells Effective date of registration: 20221110 Granted publication date: 20220708 Pledgee: Dongying laishang village bank Limited by Share Ltd. Development Zone sub branch Pledgor: DONGYING MINGHUI NEW ENERGY TECHNOLOGY Co.,Ltd. Registration number: Y2022980021503 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20231124 Granted publication date: 20220708 Pledgee: Dongying laishang village bank Limited by Share Ltd. Development Zone sub branch Pledgor: DONGYING MINGHUI NEW ENERGY TECHNOLOGY Co.,Ltd. Registration number: Y2022980021503 |