CN207296944U - A kind of pressure control device of docking style geothermal well - Google Patents
A kind of pressure control device of docking style geothermal well Download PDFInfo
- Publication number
- CN207296944U CN207296944U CN201721053740.7U CN201721053740U CN207296944U CN 207296944 U CN207296944 U CN 207296944U CN 201721053740 U CN201721053740 U CN 201721053740U CN 207296944 U CN207296944 U CN 207296944U
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- port
- well
- control device
- valve
- pressure control
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Abstract
A kind of pressure control device of docking style geothermal well provided by the utility model, including four-way housing, four-way housing includes four ports, is respectively first port, second port, the 3rd port and the 4th port, wherein, first port is connected with being arranged on the casing of straight well well head；Second port is connected with pressure gauge and shut-off valve in turn；3rd port is connected with semilune bias flashboard valve；4th port is connected with mud line interface, meanwhile, the 4th port on the pipeline of mud line interface with being provided with flashboard valve.The utility model realizes the pressure balance in straight well and horizontal engineering well shaft bottom, ensure that the safety of straight well shaft mouth operation personnel, protects well site environment.
Description
Technical field
The utility model belongs to geothermal energy development technical field, is related in a kind of docking style geothermal well implementation process supporting
The pressure control device that straight well uses.
Background technology
For a kind of new docking style geothermal well of 1500~3000m mid-deep stratas geothermal resource of hydrothermal type exploitation, by flatly
Straight well and the horizontal engineering well of a bite are composed.This new docking style geothermal well is related to horizontal engineering well in implementation process
Be docked and connected shop problem of the straight well in purpose heat reservori.Due to：1. connectivity points position is usually relatively deep, bottom pressure is big；
2. horizontal engineering well is big in connectivity points both sides bottom hole pressure difference with straight well, in the moment that horizontal engineering well is connected with straight well, Liang Jingjing
Bottom pressure disequilibrium, the mud of horizontal engineering well are scurried into straight well, are caused in a short time：Horizontal engineering well bottom pressure is rapid
Drop, occurs hole collapse, sand card and underground drilling accident；Straight well bottom pressure rises sharply, and is altered on mud, jeopardizes and is used in straight well pit shaft pair
Lead to the signal measurement instrument safety of operation in succession；3. straight well well head sprays mud, jeopardize personnel safety, cause environmental pollution etc. to ask
Topic.To solve the problems, such as this, it is necessary to be designed in straight well well head and install a kind of pressure control device additional, to control bottom pressure to become
Change, it is ensured that the operation that is docked and connected smoothly is implemented.
The content of the invention
A kind of pressure control device of docking style geothermal well provided by the utility model, solves existing level engineering
Well and straight well being docked and connected in operation process in purpose heat reservori, due to connectivity points both sides bottom hole pressure difference is big, in water
The moment that flat engineering well is connected with straight well, two well bottom pressure disequilibrium, the mud of horizontal engineering well are scurried into a short time
Straight well, causes horizontal engineering well bottom pressure rapid drawdown, and hole collapse, sand card and underground drilling accident occurs；Straight well bottom pressure rises sharply,
Altered on mud, jeopardize the defects of interior signal measurement instrument for the operation that is docked and connected of straight well pit shaft is safe.
In order to achieve the above object, the technical solution adopted in the utility model is：
A kind of pressure control device of docking style geothermal well provided by the utility model, including four-way housing, four-way
Housing includes four ports, respectively first port, second port, the 3rd port and the 4th port, wherein, first port is with setting
Put the casing connection in straight well well head；Second port is connected with pressure gauge and shut-off valve in turn；3rd port is connected with semilune
Eccentric flashboard valve；4th port is connected with mud line interface, meanwhile, the 4th port on the pipeline of mud line interface with setting
It is equipped with flashboard valve.
Preferably, four ports of four-way housing are arranged in cross-shaped configuration.
Preferably, first port is connected by screw thread with the casing of straight well well head.
Preferably, second port is connected with pressure gauge and shut-off valve successively by reducer union.
Preferably, the 3rd port is connected by flange with semilune bias flashboard valve.
Preferably, the 4th port is connected by one end of the first clip and flashboard valve, and the other end of flashboard valve passes through
Second clip is connected with mud line interface.
Preferably, cable aperture is offered on the moon shape center of semilune bias flashboard valve.
Compared with prior art, the beneficial effects of the utility model are：
The pressure control device of a kind of docking style geothermal well provided by the utility model, first by the four-way housing
A port is connected with the casing of straight well well head, meanwhile, a port of four-way housing is connected with mud line interface, passes through mud
Slurry pipeline interface injects mud into straight well, and the balance of two well bottom pressures is realized by mud；In horizontal engineering well and straight well
During connection, matched by valve and pressure gauge, precisely adjust straight well shaft bottom mud pressure, realize that bottom pressure is put down
Weighing apparatus；Each valve state is kept, until horizontal engineering well completes drilling well task.The utility model realizes horizontal engineering well and straight well
The pressure balance in shaft bottom, ensure that the safety of straight well shaft mouth operation personnel, protect well site environment.
Further, it is connected by screw thread with the casing of straight well well head so that the structure convenient disassembly, and it is adapted to different rulers
Very little well head uses.
Further, it is connected by flashboard valve with mud line interface, effectively controls mud flowing in straight well pit shaft, protect
The safety for the signal measurement instrument for being used for being docked and connected in straight well pit shaft is demonstrate,proved.
Further, the moon shape center on semilune bias flashboard valve opens up cable aperture, does not influence measuring instrument electricity
Cable passes through convenient working.
Brief description of the drawings
Fig. 1 is pressure control device structure diagram；
Fig. 2 is semilune bias flashboard valve structure diagram；
Wherein, 1, four-way housing 2, screw thread 3, reducer union 4, the first clip 5, flange 6, flashboard valve 7, pressure
Table 8, shut-off valve 9, the second clip 10, mud line interface 11, semilune bias flashboard valve 101, first port
102nd, second port 103, the 3rd port 104, the 4th port 1101, moon shape center 1102, cable aperture.
Embodiment
The utility model is further described below in conjunction with the accompanying drawings.
A kind of pressure control device of docking style geothermal well provided by the utility model, including it is arranged on straight well well head
Four-way housing 1, four-way housing 1 include in cross arrangement four ports, be respectively first port 101, second port
102nd, the 3rd port 103 and the 4th port 104, wherein, 101 and the 3rd port 103 of first port is placed on same vertical line, the
102 and the 4th port 104 of Two-port netwerk is placed in same horizontal line.
The first port 101 of four-way housing 1 is installed on by screw thread 2 on the casing of straight well well head；The second of four-way housing 1
Port 102 is connected with pressure gauge 7 and shut-off valve 8 in turn by reducer union 3；3rd port 103 of four-way housing 1 passes through flange
5 connection semilune bias flashboard valves 11；4th port 104 of four-way housing 1 connects flashboard valve 6 by the first clip 4
One end, the other end of flashboard valve 6 connect mud line interface 10 by the second clip 9.
As shown in Fig. 2, the both ends of semilune bias flashboard valve 11 are flange arrangement, semilune bias flashboard valve 11
Moon shape center 1101 offer cable aperture 1102.
During work：
First, carried out in docking style geothermal well before two wells are docked and connected, by screw thread 2 by the first end of four-way housing 1
Mouthfuls 101 with the female thread on straight well wellhead casing pipe immediately, meanwhile, mud line interface 10 is connected with mud channel；
Then, semilune bias flashboard valve 11 is opened, is put into and is used for from the inlet of semilune bias flashboard valve 11
Be docked and connected the signal measurement instrument of operation, and instrument keeps semilune bias flashboard valve 11 to open behind precalculated position
State；
Then, open flashboard valve 6, from mud line interface 10 into straight well mud grouting, pass through semilune bias flashboard
The aperture observation of valve 11, when mud is filled to well head, closes flashboard valve 6, while the cable tight of signal measurement instrument is leaned on
Cable aperture 1102, closes semilune bias flashboard valve 11；
Then, shut-off valve 8 is opened, is being docked and connected in operation process, the pressure change of close observation pressure gauge 7, works as pressure
The reading of power table 7 from it is above freezing rise to no longer change when, illustrate that bottom pressure reaches balance, two wells connect successfully.Keep each valve
State, until horizontal engineering well completes drilling well task.
Finally, after horizontal engineering well finishing drilling, semilune bias flashboard valve 11 is opened, acts measuring instrument, horizontal engineering
In well trip-out process, flashboard valve 6 is opened, by mud line interface 10 toward mud is supplemented in straight well, maintains two well shaft bottoms pressure
Dynamic balance.
Claims (7)
- A kind of 1. pressure control device of docking style geothermal well, it is characterised in that：Including four-way housing (1), four-way housing (1) include four ports, be respectively first port (101), second port (102), the 3rd port (103) and the 4th port (104), wherein, first port (101) is connected with being arranged on the casing of straight well well head；Second port (102) is connected with pressure in turn Power table (7) and shut-off valve (8)；3rd port (103) is connected with semilune bias flashboard valve (11)；4th port (104) is even Mud line interface (10) is connected to, meanwhile, the 4th port (104) on the pipeline of mud line interface (10) with being provided with slide valve Door (6).
- A kind of 2. pressure control device of docking style geothermal well according to claim 1, it is characterised in that：Four-way shell Four ports of body (1) are arranged in cross-shaped configuration.
- A kind of 3. pressure control device of docking style geothermal well according to claim 1, it is characterised in that：First end Mouth (101) is connected by screw thread (2) with the casing of straight well well head.
- A kind of 4. pressure control device of docking style geothermal well according to claim 1, it is characterised in that：Second end Mouth (102) is connected with pressure gauge (7) and shut-off valve (8) successively by reducer union (3).
- A kind of 5. pressure control device of docking style geothermal well according to claim 1, it is characterised in that：3rd end Mouth (103) is connected by flange (5) with semilune bias flashboard valve (11).
- A kind of 6. pressure control device of docking style geothermal well according to claim 1, it is characterised in that：4th end Mouth (104) is connected by the first clip (4) with one end of flashboard valve (6), and the other end of flashboard valve (6) passes through the second clip (9) it is connected with mud line interface (10).
- 7. according to a kind of pressure control device of docking style geothermal well of claim 1-6 any one of them, its feature exists In：Cable aperture (1102) is offered on the moon shape center (1101) of semilune bias flashboard valve (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721053740.7U CN207296944U (en) | 2017-08-22 | 2017-08-22 | A kind of pressure control device of docking style geothermal well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721053740.7U CN207296944U (en) | 2017-08-22 | 2017-08-22 | A kind of pressure control device of docking style geothermal well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207296944U true CN207296944U (en) | 2018-05-01 |
Family
ID=62443636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721053740.7U Expired - Fee Related CN207296944U (en) | 2017-08-22 | 2017-08-22 | A kind of pressure control device of docking style geothermal well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207296944U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110388203A (en) * | 2019-08-12 | 2019-10-29 | 北京探矿工程研究所 | High-temperature geothermal well water testing and well killing system and method |
-
2017
- 2017-08-22 CN CN201721053740.7U patent/CN207296944U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110388203A (en) * | 2019-08-12 | 2019-10-29 | 北京探矿工程研究所 | High-temperature geothermal well water testing and well killing system and method |
| CN110388203B (en) * | 2019-08-12 | 2024-02-13 | 北京探矿工程研究所 | High-temperature geothermal well water pressure testing well system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180501 |