CN105626004B - A kind of Oil/gas Well open flow erosion resistance choke manifold - Google Patents
A kind of Oil/gas Well open flow erosion resistance choke manifold Download PDFInfo
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- CN105626004B CN105626004B CN201610119939.9A CN201610119939A CN105626004B CN 105626004 B CN105626004 B CN 105626004B CN 201610119939 A CN201610119939 A CN 201610119939A CN 105626004 B CN105626004 B CN 105626004B
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- 230000003628 erosive effect Effects 0.000 title claims abstract description 91
- 210000002445 nipple Anatomy 0.000 claims abstract description 76
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 210000000664 rectum Anatomy 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 13
- 239000007788 liquid Substances 0.000 abstract description 4
- 230000006837 decompression Effects 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 30
- 239000007789 gas Substances 0.000 description 25
- 230000002265 prevention Effects 0.000 description 11
- 206010020852 Hypertonia Diseases 0.000 description 7
- 238000010079 rubber tapping Methods 0.000 description 6
- 230000007423 decrease Effects 0.000 description 5
- 150000004677 hydrates Chemical class 0.000 description 5
- 230000003111 delayed effect Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000009096 changqing Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 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 1
- 238000000034 method Methods 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
-
- 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
- E21B34/00—Valve arrangements for boreholes or wells
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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)
- Pipe Accessories (AREA)
- Lift Valve (AREA)
Abstract
The invention provides a kind of Oil/gas Well open flow erosion resistance choke manifold, by 1 fixation type throttle valve, 1 manual needle-like formula choke valve, 5 manual platform gate valves, 2 erosion resistance diameter changing nipples, 2 pipeline four-ways, 2 pipelines five pass to and manifold pipeline forms.Fixation type throttle valve is built with erosion resistance reducing nozzle tip, downstream is provided with erosion resistance diameter changing nipple, manual needle-like formula choke valve downstream is equally provided with erosion resistance diameter changing nipple, by be turned on and off different manual platform gate valves, needle-valve combination to control two-way to throttle, 1 tunnel it is in line, so as to control the pressure of oil pipe, sleeve pipe during open flow after pressure break.With it is existing using gate valve or the choke manifold of noticeable degree compared with, reduce erosion of the open flow liquid to oil nozzle, pipe nipple, gate valve, improve surface throttling decompression efficiency, the replacement cost of manifold consumable accessory is saved, extend the service life of choke manifold, it is practical, significant effect, suitable for open flow operation after well fracturing.
Description
Technical field
The invention belongs to the underground work technical field such as well fracturing, acidifying, and in particular to a kind of Oil/gas Well open flow is used
Erosion resistance choke manifold.
Background technology
Horizontal well multi-stage water power abrasive perforating, annular fracturing technology have obtained large-scale promotion in Changqing oilfields at present
Using needing to be controlled casing annulus pressure, tubing pressure during open flow after pressure break, existing choke manifold is generally adopted
Throttled with gate valve or needle-valve, also there are some choke manifolds to be throttled using fixation type throttle valve and gate valve, but due to lock
Valve, needle-valve and fixation type throttle valve erosion wear resistance are poor, especially after pressure break in open flow operation process, with big in sleeve pipe returning fluid
Reservoir sand or perforation sand are measured, serious erosion is caused to gate valve, needle-valve and fixation type throttle valve, and Stress control effect is bad,
Generally a gate valve, needle-valve or fixation type throttle valve can be damaged within one or two hour per open flow at the scene.
The content of the invention
Positive choke pressure drop mutation, pressure drop during open flow after pressure break present invention aim to address existing choke manifold
Regulation and control inaccurate (i.e. oil, cover Stress control inaccurate), temperature drop are excessive, the serious erosion of the positive choke port of export, fluid erosion prevention pipe nipple
The problem of entrance point erosion damage, gate valve and the serious erosion of needle-valve damage.
Therefore, the invention provides a kind of Oil/gas Well open flow erosion resistance choke manifold, including pipeline four-way one, pipeline five
Logical two, connected between pipeline four-way one and pipeline five logical two by pipeline one, manual platform gate valve four is installed on pipeline one；
One of mouth of pipe of pipeline four-way one is communicated with fixation type throttle valve, the axial centre of pipeline two by pipeline two
Line is provided with manual platform gate valve one on pipeline two, fixation type throttle valve passes through reducing perpendicular to the longitudinal center line of pipeline one
Pipe nipple one is connected with pipeline five logical one, and the axial centerline parallel of diameter changing nipple one is in the longitudinal center line of pipeline one；
One of mouth of pipe of pipeline five logical two is connected with pipeline five logical one, the longitudinal center line of pipeline five by pipeline five
Parallel to the longitudinal center line of pipeline two, manual platform gate valve five, another pipe of pipeline five logical two are installed on pipeline five
Mouth is connected with manual needle-like formula choke valve by pipeline four, and manual platform gate valve three, manual needle-like formula section are provided with pipeline four
Stream valve is connected with pipeline four-way two by diameter changing nipple two, by pipeline tee joint between pipeline four-way two and pipeline five logical one,
Pipeline three is provided with manual platform gate valve two；
The inner chamber of the fixation type throttle valve is provided with reducing nozzle tip, and reducing nozzle tip connects with diameter changing nipple one.
The reducing nozzle tip is hollow cylindrical structural, and the internal diameter of inner chamber is gradual change type, close to the one end of diameter changing nipple one
Diameter it is maximum.
The diameter changing nipple one is identical with the structure of diameter changing nipple two, and the internal diameter of inner chamber is gradual change type, diameter changing nipple one
Diameter close to reducing nozzle tip one end is minimum, and diameter of the diameter changing nipple two close to the one end of pipeline four-way two is minimum.
The reducing nozzle tip and the clamping of diameter changing nipple one.
The reducing nozzle tip is threadedly coupled with diameter changing nipple one.
Equal heap is welded with the carbonization of YG8 hard alloy on the internal chamber wall of the diameter changing nipple one, diameter changing nipple two and reducing nozzle tip
Tungsten material.
The thickness of built-up welding is 4mm.
Choke manifold integrally long 2595mm, wide 1450mm, high 600mm.
The size of the reducing nozzle tip is 2~20mm.
The pipeline one, pipeline two, pipeline three, pipeline four, pipeline five select 2-9/16 " pipeline, and pipeline latus rectum is
65mm。
Beneficial effects of the present invention：This Oil/gas Well open flow erosion resistance choke manifold provided by the invention, utilizes oil nozzle
With the change of the internal structure of fluid erosion prevention pipe nipple, when its fluid returned out from oil pipe, sleeve pipe is flowed through the choke manifold flow velocity and
Pressure steadily reduces, and pressure drop slowly reduces, and temperature drop declines gently, and oil pipe, casing pressure control are accurate, so as to effectively solve oil nozzle
Port of export erosion and the entrance point erosion of fluid erosion prevention pipe nipple, while avoid forming natural gas hydration because throttling temperature drop decline is too fast
Thing is to block choke manifold and well head.By switching different manual platform gate valves, needle-valve combination is realized to oil pipe, sleeve pipe pressure
The accurate control of power, erosion of the row's of returning load fluid to oil nozzle, pipe nipple, gate valve is reduced, improves surface throttling efficiency.Erosion resistance
It is convenient that throttling oil nozzle and erosion resistance pipe nipple are changed, and has good erosive wear resistance.Not only increase the throttling drop of choke manifold
Effect is pressed, the replacement cost of manifold consumable accessory is also a saving, extends the service life of choke manifold, practical, effect shows
Write, suitable for open flow operation after well fracturing.
The present invention is described in further details below with reference to accompanying drawing.
Brief description of the drawings
Fig. 1 is the structural representation of Oil/gas Well open flow erosion resistance choke manifold.
Description of reference numerals：1st, pipeline four-way one；2nd, manual platform gate valve one；3rd, fixation type throttle valve；4th, reducing nozzle tip；
5th, diameter changing nipple one；6th, pipeline five logical one；7th, manual platform gate valve two；8th, the I of pipeline four-way two；9th, diameter changing nipple two；10th, manually
Needle-like formula choke valve；11st, manual platform gate valve three；12nd, pipeline five logical two；13rd, manual platform gate valve four；14th, manual platform lock
Valve five；15th, pipeline one；16th, pipeline two；17th, pipeline three；18th, pipeline four；19th, pipeline five.
Embodiment
Embodiment 1：
As shown in figure 1, a kind of Oil/gas Well open flow erosion resistance choke manifold, including pipeline four-way 1, pipeline five logical two
12, connected between pipeline four-way 1 and pipeline five logical 2 12 by pipeline 1, manual platform gate valve is installed on pipeline 1
4 13；
One of mouth of pipe of pipeline four-way 1 is communicated with fixation type throttle valve 3, the axle of pipeline 2 16 by pipeline 2 16
To central axis in being provided with manual platform gate valve 1, fixation type throttle on the longitudinal center line of pipeline 1, pipeline 2 16
Valve 3 is connected with pipeline five logical 1 by diameter changing nipple 1, and the axial centerline parallel of diameter changing nipple 1 is in the axle of pipeline 1
To center line；
One of mouth of pipe of pipeline five logical 2 12 is connected with pipeline five logical 1, the axle of pipeline 5 19 by pipeline 5 19
To centerline parallel in being provided with manual platform gate valve 5 14 on the longitudinal center line of pipeline 2 16, pipeline 5 19, pipeline five is logical
2 12 another mouth of pipe is connected with manual needle-like formula choke valve 10 by pipeline 4 18, is provided with pipeline 4 18 flat manually
Plate gate valve 3 11, manual needle-like formula choke valve 10 are connected with pipeline four-way 28, pipeline four-way 28 and pipe by diameter changing nipple 29
Connected between Lu Wutong 1 by pipeline 3 17, pipeline 3 17 is provided with manual platform gate valve 27；
The inner chamber of the fixation type throttle valve 3 is provided with reducing nozzle tip 4, and reducing nozzle tip 4 connects with diameter changing nipple 1.
The choke manifold is Two In and Two Out structure, and side is controlled using manual needle-like formula choke valve 10, and opposite side is using solid
Fixed pattern choke valve 3 controls, middle in line.Manifold internally-fixed choke valve 3 built with particular design erosion resistance reducing nozzle tip 4,
Downstream is provided with the erosion resistance diameter changing nipple 1 of particular design, and the manual downstream of needle-like formula choke valve 10 is equally provided with special set
The erosion resistance diameter changing nipple 29 of meter.By being turned on and off different manual platform gate valves, needle-valve combination, selection is advance
Various sizes of erosion resistance reducing nozzle tip 4 in fixation type throttle valve 3, the throttling of control two-way, 1 tunnel are in line, so as to real
Accurate control after present pressure break during open flow to oil pipe, casing pressure, prevents hypertonia from causing line burst, or pressure
It is too low to cause stratum to tell sand, avoid oil nozzle erosion in choke manifold.
The connected mode of above-mentioned choke manifold is：All connections are connected using flange in manifold, and flange is 2-7/8 " EUE
The flange of R27 standards 350, supporting bolt are the stud of M27 × 3 × 175；Choke manifold entrance and well mouth oil pipe gate valve, well head
Set sluice valve is attached, and choke manifold outlet is attached with relief line, according to open flow discharge capacity and pressure after live pressure break
Erosion resistance reducing nozzle tip in fixation type throttle valve built with suitable dimension.
According to open flow discharge capacity after field hydraulic perforating and fracturing and oil, set Stress control needs, pacify in fixation type throttle valve
Reducing nozzle tip 4 is filled, the size of reducing nozzle tip 4 needs to select according to scene, passes through switch manual flat gate valve 1, hand during open flow
Dynamic flat gate valve 4 13, manual platform gate valve 3 11, manual platform gate valve 27, manual needle-like formula choke valve 10, to oil pipe, set
Pipe pressure is accurately controlled, and can carry out loine pressure release control by switch manual flat gate valve 5 14 during hypertonia,
Prevent superpressure from influenceing control blowout manifold quality safety, throttling open flow is realized, specifically, the Oil/gas Well open flow erosion resistance choke manifold
The course of work be：
The manifold set on pipeline four-way 1 is put into mouth first to be attached with wellhead casing pipe gate valve, by pipeline five logical two
Manifold oil on 12 is put into mouth and is attached with well mouth oil pipe gate valve, the manifold outlet at pipeline five logical 1 and high-pressure hose or
Hard pipeline（Liquids recovery）It is attached, the manifold outlet at pipeline four-way 28 is attached with hard relief line；
After the completion of above-mentioned connection, according to Oil/gas Well open flow flow and well head oil, set Stress control needs, suitable dimension is selected
Reducing nozzle tip 4, then reducing nozzle tip 4 is loaded in fixation type throttle valve 3, the downstream installation diameter changing nipple of fixation type throttle valve 3
One 5, diameter changing nipple 29 equally is installed in the manual downstream of needle-like formula choke valve 10；
During sleeve pipe open flow, turn off well mouth oil pipe gate valve, open manual platform gate valve 1, close manual platform gate valve 4 13,
Manual platform gate valve 5 14, manual platform gate valve 27, the accurate control that throttles can be carried out to casing pressure；If casing pressure is too high,
Manual platform gate valve 4 13, manual platform gate valve 5 14 can be opened, closes manual platform gate valve 3 11, covers tapping body from pipeline five
Logical one 6 exits outflow, discharges a part of fluid pressure；
During oil pipe open flow, turn off wellhead casing pipe gate valve, open manual platform gate valve 4 13, manual platform gate valve 3 11, hand
Dynamic flat gate valve 27, manual platform gate valve 1 and manual needle-like formula choke valve 10, close manual platform gate valve 5 14, can be right
Tubing pressure carries out the accurate control that throttles；If oil puts hypertonia, manual platform gate valve 5 14 can be opened, oily tapping body is from pipeline
Five logical 1, the outlet outflow of pipeline four-way 28, discharges a part of fluid pressure；
After open flow terminates, closed-in well muzzle sluice valve and oil pipe gate valve, the choke manifold fixation type throttle of dismounting cleaning in time
Valve 3, manual needle-like formula choke valve 10 and all manual platform gate valves, maintenance or replacing erosion resistance reducing nozzle tip, needle-valve, lock
Valve etc., so as to open flow operation again.
This Oil/gas Well open flow erosion resistance choke manifold provided by the invention, utilizes the inside of oil nozzle and fluid erosion prevention pipe nipple
The change of structure, flow velocity and pressure are steadily reduced when its fluid returned out from oil pipe, sleeve pipe is flowed through the choke manifold, and pressure drop is delayed
Slow to reduce, temperature drop declines gently, and oil pipe, casing pressure control are accurate, so as to effectively solve oil nozzle outlet end erosion and fluid erosion prevention
The entrance point erosion of pipe nipple, at the same avoid because throttling temperature drop decline it is too fast form gas hydrates with block choke manifold and
Well head.By switching different manual platform gate valves, needle-valve combines the accurate control realized to oil pipe, casing pressure, reduces
Erosion of the row's of returning load fluid to oil nozzle, pipe nipple, gate valve, improves surface throttling efficiency.Erosion resistance throttling oil nozzle and erosion resistance
It is convenient that pipe nipple is changed, and has good erosive wear resistance.The reducing pressure by regulating flow effect of choke manifold is not only increased, also a saving pipe
The replacement cost of remittance consumable accessory, extends the service life of choke manifold, practical, significant effect, suitable for Oil/gas Well pressure
Split rear open flow operation.
Embodiment 2：
On the basis of embodiment 1, the reducing nozzle tip 4 is hollow cylindrical structural, and the internal diameter of inner chamber is gradual change type,
Diameter close to the one end of diameter changing nipple 1 is maximum, and the chock pressure difference of erosion resistance reducing nozzle tip 4 can be carried out between 0.2 ~ 35MPa
Regulation, with design pressure error in the range of ± 0.5MPa.Using the change of the internal structure of reducing nozzle tip 4, make it from oil pipe, set
Flow velocity and pressure steadily reduce when the fluid that pipe returns out flows through the choke manifold, and pressure drop slowly reduces, and temperature drop declines gentle, oil
Pipe, casing pressure control are accurate, so as to effectively solve oil nozzle outlet end erosion, while avoid because throttling temperature drop declines too fast and shape
Into gas hydrates to block choke manifold and well head.
The connected mode of above-mentioned choke manifold is：All connections are connected using flange in manifold, and flange is 2-7/8 " EUE
The flange of R27 standards 350, supporting bolt are the stud of M27 × 3 × 175；Choke manifold entrance and well mouth oil pipe gate valve, well head
Set sluice valve is attached, and choke manifold outlet is attached with relief line, according to open flow discharge capacity and pressure after live pressure break
Erosion resistance reducing nozzle tip in fixation type throttle valve built with suitable dimension.
According to open flow discharge capacity after field hydraulic perforating and fracturing and oil, set Stress control needs, pacify in fixation type throttle valve
Reducing nozzle tip 4 is filled, the size of reducing nozzle tip 4 needs to select according to scene, passes through switch manual flat gate valve 1, hand during open flow
Dynamic flat gate valve 4 13, manual platform gate valve 3 11, manual platform gate valve 27, manual needle-like formula choke valve 10, to oil pipe, set
Pipe pressure is accurately controlled, and can carry out loine pressure release control by switch manual flat gate valve 5 14 during hypertonia,
Prevent superpressure from influenceing control blowout manifold quality safety, throttling open flow is realized, specifically, the Oil/gas Well open flow erosion resistance choke manifold
The course of work be：
The manifold set on pipeline four-way 1 is put into mouth first to be attached with wellhead casing pipe gate valve, by pipeline five logical two
Manifold oil on 12 is put into mouth and is attached with well mouth oil pipe gate valve, the manifold outlet at pipeline five logical 1 and high-pressure hose or
Hard pipeline（Liquids recovery）It is attached, the manifold outlet at pipeline four-way 28 is attached with hard relief line；
After the completion of above-mentioned connection, according to Oil/gas Well open flow flow and well head oil, set Stress control needs, suitable dimension is selected
Reducing nozzle tip 4, then reducing nozzle tip 4 is loaded in fixation type throttle valve 3, the downstream installation diameter changing nipple of fixation type throttle valve 3
One 5, diameter changing nipple 29 equally is installed in the manual downstream of needle-like formula choke valve 10；
During sleeve pipe open flow, turn off well mouth oil pipe gate valve, open manual platform gate valve 1, close manual platform gate valve 4 13,
Manual platform gate valve 5 14, manual platform gate valve 27, the accurate control that throttles can be carried out to casing pressure；If casing pressure is too high,
Manual platform gate valve 4 13, manual platform gate valve 5 14 can be opened, closes manual platform gate valve 3 11, covers tapping body from pipeline five
Logical one 6 exits outflow, discharges a part of fluid pressure；
During oil pipe open flow, turn off wellhead casing pipe gate valve, open manual platform gate valve 4 13, manual platform gate valve 3 11, hand
Dynamic flat gate valve 27, manual platform gate valve 1 and manual needle-like formula choke valve 10, close manual platform gate valve 5 14, can be right
Tubing pressure carries out the accurate control that throttles；If oil puts hypertonia, manual platform gate valve 5 14 can be opened, oily tapping body is from pipeline
Five logical 1, the outlet outflow of pipeline four-way 28, discharges a part of fluid pressure；
After open flow terminates, closed-in well muzzle sluice valve and oil pipe gate valve, the choke manifold fixation type throttle of dismounting cleaning in time
Valve 3, manual needle-like formula choke valve 10 and all manual platform gate valves, maintenance or replacing erosion resistance reducing nozzle tip, needle-valve, lock
Valve etc., so as to open flow operation again.
This Oil/gas Well open flow erosion resistance choke manifold provided by the invention, utilizes the inside of oil nozzle and fluid erosion prevention pipe nipple
The change of structure, flow velocity and pressure are steadily reduced when its fluid returned out from oil pipe, sleeve pipe is flowed through the choke manifold, and pressure drop is delayed
Slow to reduce, temperature drop declines gently, and oil pipe, casing pressure control are accurate, so as to effectively solve oil nozzle outlet end erosion and fluid erosion prevention
The entrance point erosion of pipe nipple, at the same avoid because throttling temperature drop decline it is too fast form gas hydrates with block choke manifold and
Well head.By switching different manual platform gate valves, needle-valve combines the accurate control realized to oil pipe, casing pressure, reduces
Erosion of the row's of returning load fluid to oil nozzle, pipe nipple, gate valve, improves surface throttling efficiency.Erosion resistance throttling oil nozzle and erosion resistance
It is convenient that pipe nipple is changed, and has good erosive wear resistance.The reducing pressure by regulating flow effect of choke manifold is not only increased, also a saving pipe
The replacement cost of remittance consumable accessory, extends the service life of choke manifold, practical, significant effect, suitable for Oil/gas Well pressure
Split rear open flow operation.
Embodiment 3：
The diameter changing nipple 1 is identical with the structure of diameter changing nipple 29, and the internal diameter of inner chamber is gradual change type, diameter changing nipple
One 5 diameter close to the one end of reducing nozzle tip 4 is minimum, and diameter of the diameter changing nipple 29 close to the one end of pipeline four-way 28 is minimum.Utilize
The change of diameter changing nipple 1 and the internal structure of diameter changing nipple 29, its fluid returned out from oil pipe, sleeve pipe is set to flow through the throttle pipe
Flow velocity and pressure steadily reduce during remittance, and pressure drop slowly reduces, and temperature drop declines gently, and oil pipe, casing pressure control are accurate, so as to have
Effect solves diameter changing nipple 1 and the entrance point erosion of diameter changing nipple 29, while avoids being formed natural because throttling temperature drop declines too fast
Gas hydrate is to block choke manifold and well head.
The connected mode of above-mentioned choke manifold is：All connections are connected using flange in manifold, and flange is 2-7/8 " EUE
The flange of R27 standards 350, supporting bolt are the stud of M27 × 3 × 175；Choke manifold entrance and well mouth oil pipe gate valve, well head
Set sluice valve is attached, and choke manifold outlet is attached with relief line, according to open flow discharge capacity and pressure after live pressure break
Erosion resistance reducing nozzle tip in fixation type throttle valve built with suitable dimension.
According to open flow discharge capacity after field hydraulic perforating and fracturing and oil, set Stress control needs, pacify in fixation type throttle valve
Reducing nozzle tip 4 is filled, the size of reducing nozzle tip 4 needs to select according to scene, passes through switch manual flat gate valve 1, hand during open flow
Dynamic flat gate valve 4 13, manual platform gate valve 3 11, manual platform gate valve 27, manual needle-like formula choke valve 10, to oil pipe, set
Pipe pressure is accurately controlled, and can carry out loine pressure release control by switch manual flat gate valve 5 14 during hypertonia,
Prevent superpressure from influenceing control blowout manifold quality safety, throttling open flow is realized, specifically, the Oil/gas Well open flow erosion resistance choke manifold
The course of work be：
The manifold set on pipeline four-way 1 is put into mouth first to be attached with wellhead casing pipe gate valve, by pipeline five logical two
Manifold oil on 12 is put into mouth and is attached with well mouth oil pipe gate valve, the manifold outlet at pipeline five logical 1 and high-pressure hose or
Hard pipeline（Liquids recovery）It is attached, the manifold outlet at pipeline four-way 28 is attached with hard relief line；
After the completion of above-mentioned connection, according to Oil/gas Well open flow flow and well head oil, set Stress control needs, suitable dimension is selected
Reducing nozzle tip 4, then reducing nozzle tip 4 is loaded in fixation type throttle valve 3, the downstream installation diameter changing nipple of fixation type throttle valve 3
One 5, diameter changing nipple 29 equally is installed in the manual downstream of needle-like formula choke valve 10；
During sleeve pipe open flow, turn off well mouth oil pipe gate valve, open manual platform gate valve 1, close manual platform gate valve 4 13,
Manual platform gate valve 5 14, manual platform gate valve 27, the accurate control that throttles can be carried out to casing pressure；If casing pressure is too high,
Manual platform gate valve 4 13, manual platform gate valve 5 14 can be opened, closes manual platform gate valve 3 11, covers tapping body from pipeline five
Logical one 6 exits outflow, discharges a part of fluid pressure；
During oil pipe open flow, turn off wellhead casing pipe gate valve, open manual platform gate valve 4 13, manual platform gate valve 3 11, hand
Dynamic flat gate valve 27, manual platform gate valve 1 and manual needle-like formula choke valve 10, close manual platform gate valve 5 14, can be right
Tubing pressure carries out the accurate control that throttles；If oil puts hypertonia, manual platform gate valve 5 14 can be opened, oily tapping body is from pipeline
Five logical 1, the outlet outflow of pipeline four-way 28, discharges a part of fluid pressure；
After open flow terminates, closed-in well muzzle sluice valve and oil pipe gate valve, the choke manifold fixation type throttle of dismounting cleaning in time
Valve 3, manual needle-like formula choke valve 10 and all manual platform gate valves, maintenance or replacing erosion resistance reducing nozzle tip, needle-valve, lock
Valve etc., so as to open flow operation again.
This Oil/gas Well open flow erosion resistance choke manifold provided by the invention, utilizes the inside of oil nozzle and fluid erosion prevention pipe nipple
The change of structure, flow velocity and pressure are steadily reduced when its fluid returned out from oil pipe, sleeve pipe is flowed through the choke manifold, and pressure drop is delayed
Slow to reduce, temperature drop declines gently, and oil pipe, casing pressure control are accurate, so as to effectively solve oil nozzle outlet end erosion and fluid erosion prevention
The entrance point erosion of pipe nipple, at the same avoid because throttling temperature drop decline it is too fast form gas hydrates with block choke manifold and
Well head.By switching different manual platform gate valves, needle-valve combines the accurate control realized to oil pipe, casing pressure, reduces
Erosion of the row's of returning load fluid to oil nozzle, pipe nipple, gate valve, improves surface throttling efficiency.Erosion resistance throttling oil nozzle and erosion resistance
It is convenient that pipe nipple is changed, and has good erosive wear resistance.The reducing pressure by regulating flow effect of choke manifold is not only increased, also a saving pipe
The replacement cost of remittance consumable accessory, extends the service life of choke manifold, practical, significant effect, suitable for Oil/gas Well pressure
Split rear open flow operation.
Embodiment 4：
On the basis of embodiment 1, the reducing nozzle tip 4 and the clamping of diameter changing nipple 1 or threaded connection, this connection
Mode is convenient to be dismantled, and after open flow terminates, can in time be dismantled, be maintained or change reducing nozzle tip, so as to open flow operation again.
Embodiment 5：
Equal heap is welded with YG8 hard alloy carbon on the internal chamber wall of the diameter changing nipple 1, diameter changing nipple 29 and reducing nozzle tip 4
Change tungsten material, the thickness of built-up welding is 4mm, has higher erosive wear resistance.
Embodiment 6：
Choke manifold integrally long 2595mm, wide 1450mm, high 600mm, the size of the reducing nozzle tip 4 is 2~20mm, institute
Pipeline 1, pipeline 2 16, pipeline 3 17, pipeline 4 18, pipeline 5 19 are stated from 2-9/16 " pipeline, pressure-bearing 35MPa, pipe
Road latus rectum is 65mm.
This Oil/gas Well open flow erosion resistance choke manifold provided by the invention, utilizes the inside of oil nozzle and fluid erosion prevention pipe nipple
The change of structure, flow velocity and pressure are steadily reduced when its fluid returned out from oil pipe, sleeve pipe is flowed through the choke manifold, and pressure drop is delayed
Slow to reduce, temperature drop declines gently, and oil pipe, casing pressure control are accurate, so as to effectively solve oil nozzle outlet end erosion and fluid erosion prevention
The entrance point erosion of pipe nipple, at the same avoid because throttling temperature drop decline it is too fast form gas hydrates with block choke manifold and
Well head.By switching different manual platform gate valves, needle-valve combines the accurate control realized to oil pipe, casing pressure, reduces
Erosion of the row's of returning load fluid to oil nozzle, pipe nipple, gate valve, improves surface throttling efficiency.Erosion resistance throttling oil nozzle and erosion resistance
It is convenient that pipe nipple is changed, and has good erosive wear resistance.The reducing pressure by regulating flow effect of choke manifold is not only increased, also a saving pipe
The replacement cost of remittance consumable accessory, extends the service life of choke manifold, practical, significant effect, suitable for Oil/gas Well pressure
Split rear open flow operation.
It is exemplified as above be only to the present invention for example, do not form the limitation to protection scope of the present invention, it is all
It is to be belonged to the same or analogous design of the present invention within protection scope of the present invention.The portion that the present embodiment does not describe in detail
The well-known components and common structure or conventional means of part and the structure category industry, are not described one by one here.
Claims (10)
- A kind of 1. Oil/gas Well open flow erosion resistance choke manifold, it is characterised in that：Including pipeline four-way one（1）, pipeline five logical two （12）, pipeline four-way one（1）With pipeline five logical two（12）Between pass through pipeline one（15）Connection, pipeline one（15）On hand is installed Dynamic flat gate valve four（13）；Pipeline four-way one（1）One of mouth of pipe pass through pipeline two（16）It is communicated with fixation type throttle valve（3）, pipeline two（16） Longitudinal center line perpendicular to pipeline one（15）Longitudinal center line, pipeline two（16）On manual platform gate valve one is installed（2）, Fixation type throttle valve（3）Pass through diameter changing nipple one（5）It is connected with pipeline five logical one（6）, diameter changing nipple one（5）Longitudinal center line Parallel to pipeline one（15）Longitudinal center line；Pipeline five logical two（12）One of mouth of pipe pass through pipeline five（19）It is connected with pipeline five logical one（6）, pipeline five（19） Axial centerline parallel in pipeline two（16）Longitudinal center line, pipeline five（19）On manual platform gate valve five is installed （14）, pipeline five logical two（12）Another mouth of pipe pass through pipeline four（18）It is connected with manual needle-like formula choke valve（10）, pipe Road four（18）On manual platform gate valve three is installed（11）, manual needle-like formula choke valve（10）Pass through diameter changing nipple two（9）Connection There is pipeline four-way two（8）, pipeline four-way two（8）With pipeline five logical one（6）Between pass through pipeline three（17）Connection, pipeline three（17） Manual platform gate valve two is installed（7）；The fixation type throttle valve（3）Inner chamber reducing nozzle tip is installed（4）, reducing nozzle tip（4）With diameter changing nipple one（5）Even It is logical.
- 2. Oil/gas Well open flow erosion resistance choke manifold as claimed in claim 1, it is characterised in that：The reducing nozzle tip（4） For hollow cylindrical structural, the internal diameter of inner chamber is gradual change type, close to diameter changing nipple one（5）The diameter of one end is maximum.
- 3. Oil/gas Well open flow erosion resistance choke manifold as claimed in claim 1, it is characterised in that：The diameter changing nipple one （5）With diameter changing nipple two（9）Structure it is identical, the internal diameter of inner chamber is gradual change type, diameter changing nipple one（5）Close to reducing nozzle tip （4）The diameter of one end is minimum, diameter changing nipple two（9）Close to pipeline four-way two（8）The diameter of one end is minimum.
- 4. Oil/gas Well open flow erosion resistance choke manifold as claimed in claim 1, it is characterised in that：The reducing nozzle tip（4） With diameter changing nipple one（5）Clamping.
- 5. Oil/gas Well open flow erosion resistance choke manifold as claimed in claim 1, it is characterised in that：The reducing nozzle tip（4） With diameter changing nipple one（5）Threaded connection.
- 6. the Oil/gas Well open flow erosion resistance choke manifold as described in claim 1 or 2 or 3, it is characterised in that：The reducing is short Section one（5）, diameter changing nipple two（9）And reducing nozzle tip（4）Internal chamber wall on heap be welded with YG8 hard alloy tungsten carbide materials.
- 7. Oil/gas Well open flow erosion resistance choke manifold as claimed in claim 6, it is characterised in that：The thickness of built-up welding is 4mm.
- 8. Oil/gas Well open flow erosion resistance choke manifold as claimed in claim 1, it is characterised in that：Choke manifold is integrally grown 2595mm, wide 1450mm, high 600mm.
- 9. Oil/gas Well open flow erosion resistance choke manifold as claimed in claim 6, it is characterised in that：The reducing nozzle tip（4） Size be 2~20mm.
- 10. Oil/gas Well open flow erosion resistance choke manifold as claimed in claim 8, it is characterised in that：The pipeline one（15）、 Pipeline two（16）, pipeline three（17）, pipeline four（18）, pipeline five（19）From 2-9/16 " pipeline, pipeline latus rectum is 65mm.
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| CN201610119939.9A CN105626004B (en) | 2016-03-03 | 2016-03-03 | A kind of Oil/gas Well open flow erosion resistance choke manifold |
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| CN105626004B true CN105626004B (en) | 2017-12-15 |
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| CN106194130B (en) * | 2016-09-28 | 2019-08-09 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of choke manifold with adjustable throttling positive choke |
| CN106246146B (en) * | 2016-09-28 | 2019-06-18 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of adjustable choke manifold |
| CN106401511B (en) * | 2016-10-28 | 2019-02-19 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of high-pressure filteration choke manifold and its filtering throttling method |
| CN106437575A (en) * | 2016-10-28 | 2017-02-22 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | High-pressure fine filtering manifold and filtering method thereof |
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| CN113266307B (en) * | 2020-02-14 | 2023-01-10 | 中国石油天然气股份有限公司 | Fracturing fluid discharge control device and throttle valve |
| CN115898304B (en) * | 2023-03-09 | 2023-05-26 | 威飞海洋装备制造有限公司 | Ocean three-dimensional throttle manifold |
| CN116591644B (en) * | 2023-07-17 | 2023-09-19 | 大庆市天德忠石油科技有限公司 | Hydraulic sand blasting perforation choke manifold |
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Effective date of registration: 20211013 Address after: 100007 Oil Mansion, 9 North Avenue, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CHINA NATIONAL PETROLEUM CORPORATION CHUANQING DRILLING ENGINEERING Co. Address before: 710018 room 1207, Changqing building, Changqing Xing Long Yuan District, Xi'an, Shaanxi Patentee before: CHINA NATIONAL PETROLEUM CORPORATION CHUANQING DRILLING ENGINEERING COMPANY LIMITED CHANGQING DOWNHOLE TECHNOLOGY Co. |