CN207131386U - Gas injection High Pressure Drain system in a kind of well - Google Patents
Gas injection High Pressure Drain system in a kind of well Download PDFInfo
- Publication number
- CN207131386U CN207131386U CN201721172468.4U CN201721172468U CN207131386U CN 207131386 U CN207131386 U CN 207131386U CN 201721172468 U CN201721172468 U CN 201721172468U CN 207131386 U CN207131386 U CN 207131386U
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- CN
- China
- Prior art keywords
- well
- air
- double
- wall drill
- drill pipe
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses gas injection High Pressure Drain system in a kind of well, available for oil-gas mining and other field drilling well draining, the drainage system includes switch board, air compressor, double-wall drill pipe, packer, pressure sensor, flowmeter, air and liquid mixer, packer is located above underground water level, down-hole pressure can be made quickly to raise, air and liquid mixer is connected with underground double-wall drill pipe end, air compressor is located at earth's surface, can be by double-wall drill pipe outer tube to underground injecting gas boosting, after reaching discharge pressure, after water mixes in air and liquid mixer with air in well, discharged by double-wall drill pipe inner tube outside well.The utility model is simple in construction, is readily produced and safeguards, use cost is low, and can be obviously improved conventional drilling draining needs complex work environment by multiple suction pump integrations of operation, reduces construction cost.
Description
Technical field
It the utility model is related to a kind of pipe well drainage system, gas injection High Pressure Drain system in more particularly to a kind of well.
Background technology
Drilling well precipitation in underground engineering at present, all it is utilized in drilling well and is put into suction pump draining of drawing water is carried out to outside well
Method,.It is existing to draw water when for deep-well precipitation but the lift for being currently used for the pumping equipment of drilling well precipitation is too small
Equipment has been difficult to meet demand, can only use multiple suction pump integrations of operation, but such a method difficulty of construction is larger, and increases
The cost of dewatering construction, therefore when in face of deep-well precipitation problem, there is an urgent need to an effective water discharge method.
The content of the invention
The purpose of this utility model is to solve oil-gas mining and other field drilling well drainage problem, and provides a kind of well
Interior gas injection High Pressure Drain system, available for oil-gas mining and other field drilling well draining, the utility model is simple in construction, is easy to raw
Production and safeguard, use cost is low, and can be obviously improved conventional drilling draining needs complexity by multiple suction pump integrations of operation
Working environment.
Operation principle of the present utility model is to utilize air compressor to injecting gas boosting, root between the underground water surface and packer
Air compressor setup pressure value is determined according to required displacement in well, with the increase of borehole pressure, well water can be discharged outside well.
The utility model includes switch board, control circuit pipeline, air compressor, double-wall drill pipe, air injection pipe, outer tube, interior
Pipe, outlet pipe, well lid, packer, pressure sensor, flowmeter and air and liquid mixer, the connection of double-wall drill pipe tripping in down-hole inner tube
Common drilling rod, the outer double-wall drill pipe inner tube connection outlet pipe of well, the outer double-wall drill pipe outer tube upper end sealing of well, air injection pipe is aside set
Jointing；
Air and liquid mixer is connected on the double-wall drill pipe of underground, outer tube connection air and liquid mixer air intake valve, inner tube connection gas
Liquid mixer outlet valve, after water mixes in air and liquid mixer with air in well, advantageously in drilling well draining；
Packer is located above underground water level, wraps up double-wall drill pipe, and gully is divided into two parts up and down, and underground part
In sealing state, there is no gas exchange between two parts under elevated pressure conditions, can be when extremely short when to underground injecting gas boosting
It is interior down-hole pressure is reached drainage requirement；
Pressure sensor is with double-wall drill pipe G.I.H, between packer and the underground water surface；
In water outlet pipe end, flowmeter is set；
Well lid is installed in well mouth of drainage well, to fixed double-wall drill pipe；
Air compressor is located at earth's surface, outlet side connection air injection pipe, to underground injecting gas boosting；
Air compressor, pressure sensor and flowmeter are connected to switch board, observe down-hole pressure by switch board and go out
Water pipe drain discharge, and the gas injection pressure for changing air compressor according to being actually needed；
Air compressor is by air injection pipe and outer tube to underground injecting gas boosting, and with air pressure increase in well, water exists in well
Mix with air in air and liquid mixer, discharged by inner tube and outlet pipe outside well.
Operation principle and process of the present utility model：
By double-wall drill pipe tripping in gully after the completion of each several part is connected, layered shaping is carried out to drilling well using packer,
After the completion of preparation, air compressor is opened in switch board, and gas injection pressure is set according to the gully depth of water, is bored using double-walled
Bar outer tube carry out underground injecting gas boosting, with the rise of down-hole pressure, water is driven by air pressure in well, in air and liquid mixer with
Air mix, after mixing along double-wall drill pipe inner tube discharge well outside, in drainage procedure, it is necessary to pay attention to record pressure sensor and
Meter readings, air compressor gas injection pressure is adjusted according to actual conditions, underground water is discharged outside well, reaches drilling well precipitation
It is required that.
The advantages of the utility model and good effect：
Compared with prior art, the utility model utilizes air compressor injecting gas boosting, and driving underground water is discharged outside well,
Can solve existing drilling well water discharge method, the problem of need to utilizing multiple draining pump common operationals when carrying out deep-well draining, this reality
It is simple with new structure, it is smaller in work progress difficulty, while reduce the cost of drilling well draining.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure：1- switch boards, 2- control circuits pipeline, 3- air compressors, 4- double-wall drill pipes, 41- air injection pipes, outside 42-
Pipe, 43- inner tubes, 44- outlet pipes, 5- well lids, 6- packers, 7- pressure sensors, 8- flowmeters, 9- air and liquid mixers.
Embodiment
Refer to shown in Fig. 1, the utility model includes switch board 1, control circuit pipeline 2, air compressor 3, double-walled and bored
Bar 4, air injection pipe 41, outer tube 42, inner tube 43, outlet pipe 44, well lid 5, packer 6, pressure sensor 7, flowmeter 8 and gas-liquid are mixed
Clutch 9, the tripping in down-hole inner tube 43 of double-wall drill pipe 4 connect common drilling rod, and the outer inner tube 43 of double-wall drill pipe 4 of well connects outlet pipe 44, well
The outer upper end of 4 outer tube of double-wall drill pipe 42 sealing, aside sets the jointing of air injection pipe 41；
Air and liquid mixer 9 is connected on underground double-wall drill pipe 4, and outer tube 42 connects the air intake valve of air and liquid mixer 9, inner tube 43
The outlet valve of air and liquid mixer 9 is connected, after water mixes in air and liquid mixer 9 with air in well, advantageously in drilling well row
Water；
Packer 6 is located above underground water level, wraps up double-wall drill pipe 4, and gully is divided into two parts up and down, and underground portion
Office does not have gas exchange in sealing state under elevated pressure conditions between two parts, can be extremely short when to underground injecting gas boosting
Down-hole pressure is set to reach drainage requirement in time；
Pressure sensor 7 is with the G.I.H of double-wall drill pipe 4, between packer 6 and the underground water surface；
In the end of outlet pipe 44, flowmeter 8 is set；
Well lid 5 is installed in well mouth of drainage well, to fixed double-wall drill pipe 4；
Air compressor 3 is located at earth's surface, outlet side connection air injection pipe 41, to underground injecting gas boosting；
Air compressor 3, pressure sensor 7 and flowmeter 8 are connected to switch board 1, and down-hole pressure is observed by switch board 1
With the drain discharge of outlet pipe 44, and according to be actually needed change air compressor 3 gas injection pressure；
Air compressor 2 by air injection pipe 41 and outer tube 42 to underground injecting gas boosting, with air pressure increase, well internal memory in well
Water mixes in air and liquid mixer 9 with air, is discharged by inner tube 43 and outlet pipe 44 outside well.
Use case 1：The utility model is used for oil shale in-situ Mining Test engineering drilling well draining
(a) somewhere oil shale in-situ Mining Test to be carried out, according to requirement of engineering, three mouthfuls of 500m deep drilling wells need to be crept into,
, it is necessary to carry out drainage sunk well after the completion of drilling well, drilling well draining is carried out using this method.
(b) transformation of double-wall drill pipe is carried out in earth's surface, by double-wall drill pipe tripping in drilling well after the completion of transformation, pressure sensor with
Under drilling rod lower going-into-well, drilling well is divided into two parts followed by packer, it is therefore intended that can be fast when being pressurized to underground
Speed reaches drainage requirement, completes that air injection pipe is connected into air compressor after working above, flow is installed at outlet pipe discharge outlet
Meter.
(c) depth of water 460m in drilling well is determined before draining, therefore air compressor pressure peak value is set to 5MPa, works as draining
Air compressor is opened in switch board after the completion of system arrangement, the injecting gas boosting into well, down-hole pressure reaches in 50 minutes
5MPa, water is gradually passed through outside outlet pipe discharge well in well in pressurization, in drainage procedure, is bored by cmf record
Well displacement, continue after draining 30 minutes delivery port substantially not in water outlet, according to the displacement of cmf record, it may be determined that well
Lower water empties substantially, reaches drainage requirement needed for engineering.
Use case 2：The utility model is used for deep-well draining
(a) because of certain requirement of engineering, it is necessary to carry out drainage sunk well to a bite 2000m deep drillings well.
(b) transformation of double-wall drill pipe is carried out in earth's surface, by double-wall drill pipe tripping in drilling well after the completion of transformation, pressure sensor with
Under drilling rod lower going-into-well, drilling well is divided into two parts followed by packer, it is therefore intended that can be fast when being pressurized to underground
Speed reaches drainage requirement, completes that air injection pipe is connected into air compressor after working above, flow is installed at outlet pipe discharge outlet
Meter.
(c) determine that the depth of water is about 1000m in drilling well before draining, therefore air compressor pressure peak value be set to 10MPa,
After the completion of arrangement of Drainage air compressor, the injecting gas boosting into well, the down-hole pressure in 150 minutes are opened in switch board
Reach 10MPa, water is gradually passed through outside outlet pipe discharge well in well in pressurization, in drainage procedure, passes through flowmeter
Drilling well displacement is recorded, delivery port, can according to the displacement of cmf record substantially not in water outlet after continuing draining 300 minutes
To determine that underground water empties substantially, reach drainage requirement needed for engineering.
Claims (2)
- A kind of 1. gas injection High Pressure Drain system in well, it is characterised in that：Including switch board (1), control circuit pipeline (2), air Compressor (3), double-wall drill pipe (4), air injection pipe (41), outer tube (42), inner tube (43), outlet pipe (44), well lid (5), packer (6), pressure sensor (7), flowmeter (8) and air and liquid mixer (9), double-wall drill pipe (4) tripping in down-hole inner tube (43) connection are general Logical drilling rod, outer double-wall drill pipe (4) inner tube (43) the connection outlet pipe (44) of well, outer double-wall drill pipe (4) outer tube (42) upper end sealing of well, Air injection pipe (41) jointing is aside set；Air and liquid mixer (9) is connected on underground double-wall drill pipe (4), outer tube (42) connection air and liquid mixer (9) air intake valve, interior Manage (43) connection air and liquid mixer (9) outlet valve, after water mixes in air and liquid mixer (9) with air in well, more added with Beneficial to drilling well draining；Packer (6) is located above underground water level, parcel double-wall drill pipe (4), and gully is divided into two parts up and down, and underground portion Office does not have gas exchange in sealing state under elevated pressure conditions between two parts, can be extremely short when to underground injecting gas boosting Down-hole pressure is set to reach drainage requirement in time；Pressure sensor (7) is with double-wall drill pipe (4) G.I.H, between packer (6) and the underground water surface；In outlet pipe (44) end, flowmeter (8) is set；Well lid (5) is installed in well mouth of drainage well, to fixed double-wall drill pipe (4)；Air compressor (3) is located at earth's surface, outlet side connection air injection pipe (41), to underground injecting gas boosting；Air compressor (3), pressure sensor (7) and flowmeter (8) are connected to switch board (1), pass through switch board (1) inspection well Lower pressure and outlet pipe (44) drain discharge, and the gas injection pressure for changing air compressor (3) according to being actually needed.
- 2. gas injection High Pressure Drain system in a kind of well according to claim 1, it is characterised in that：Described air compressor (2) by air injection pipe (41) and outer tube (42) to underground injecting gas boosting, as air pressure increases in well, water is in gas-liquid mixed in well Mix with air in device (9), discharged by inner tube (43) and outlet pipe (44) outside well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721172468.4U CN207131386U (en) | 2017-09-13 | 2017-09-13 | Gas injection High Pressure Drain system in a kind of well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721172468.4U CN207131386U (en) | 2017-09-13 | 2017-09-13 | Gas injection High Pressure Drain system in a kind of well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207131386U true CN207131386U (en) | 2018-03-23 |
Family
ID=61638199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721172468.4U Expired - Fee Related CN207131386U (en) | 2017-09-13 | 2017-09-13 | Gas injection High Pressure Drain system in a kind of well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207131386U (en) |
-
2017
- 2017-09-13 CN CN201721172468.4U patent/CN207131386U/en not_active Expired - Fee Related
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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: 20180323 Termination date: 20190913 |