CN106437617B - A kind of mechanical adjustable positive choke - Google Patents
A kind of mechanical adjustable positive choke Download PDFInfo
- Publication number
- CN106437617B CN106437617B CN201610955628.6A CN201610955628A CN106437617B CN 106437617 B CN106437617 B CN 106437617B CN 201610955628 A CN201610955628 A CN 201610955628A CN 106437617 B CN106437617 B CN 106437617B
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- Prior art keywords
- split
- nozzle tip
- oil nozzle
- type reducing
- positive choke
- 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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- 239000000463 material Substances 0.000 claims abstract description 14
- 239000000956 alloy Substances 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 4
- 230000008676 import Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 230000003628 erosive effect Effects 0.000 abstract description 28
- 230000000694 effects Effects 0.000 abstract description 9
- 239000012530 fluid Substances 0.000 abstract description 8
- 230000001105 regulatory effect Effects 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 5
- 238000013461 design Methods 0.000 abstract description 4
- 241001074085 Scophthalmus aquosus Species 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000035772 mutation Effects 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 210000002445 nipple Anatomy 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
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance 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
- 239000003607 modifier Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/02—Valve arrangements for boreholes or wells in well heads
Landscapes
- 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)
- Nozzles (AREA)
- Flow Control (AREA)
Abstract
The present invention provides a kind of mechanical adjustable positive choke, including manual adjustment rod, oil nozzle ontology and split-type reducing nozzle tip bushing, the split-type reducing nozzle tip bushing is located in oil nozzle ontology, the input end of the split-type reducing nozzle tip bushing is less than outlet end, one end of the manual adjustment rod is located between oil nozzle ontology and split-type reducing nozzle tip bushing input end, and the other end is located at oil nozzle body exterior.Split-type reducing nozzle tip bushing design is variable diameters overcurrent inner cavity, fluid flow rate can be made steadily to reduce, pressure drop slowly reduces, temperature drop difference is smaller, the problem of the existing serious erosion in positive choke outlet end is reduced by changing oil nozzle chamber pressure and the method in flow velocity flow field, temperature field, split-type reducing nozzle tip bushing uses anti-erosion material simultaneously, the comprehensive erosive wear resistance for improving positive choke, generation time and replacement cost are saved, choke manifold reducing pressure by regulating flow, erosion resistance effect and service life are greatly improved, it is highly practical.
Description
Technical field
The present invention relates to a kind of mechanical adjustable positive chokes, are primarily adapted for use in open flow test or brill mill after well fracturing
Recycle ground choke manifold（Fixation type throttle valve）In.
Background technology
Positive choke be oil/gas well open flow or bore mill cyclic process in well head pressure control, flow control key tool,
It is mostly installed in surface throttling manifold fixation type throttle valve, plays the role of reducing pressure by regulating flow.Currently, using process at the scene
In, the throttle diameter of existing positive choke can not be adjusted in domestic oil/gas well surface throttling manifold, the outlet end punching of positive choke
Erosion is serious, and positive choke pressure drop regulation and control are inaccurately excessive with temperature drop mutation, and very big challenge is brought to surface throttling decompression work
And difficulty.
In consideration of it, having researched and analysed the internal structure of existing positive choke, it is found that the throttling inner cavity of existing positive choke is
Equal diameter flow channels calculate the choke pressure drop of equal diameter flow channels positive choke using Hydrodynamics Theory, temperature drop is mutated
Seriously, pressure drop regulation and control are inaccurate after usage time is more than 4h, and pressure drop is substantially reduced, and thinks that fluid erosion leads to throttle orifice
Caused by diameter becomes larger.
For this purpose, spy devises a kind of mechanical adjustable positive choke, the throttle diameter of positive choke can be not only adjusted, also
Adjustable reducing anti-wearing liner can be utilized to reduce erosion of the fluid to positive choke, effectively increase the throttling drop of choke manifold
Pressure, erosion resistance effect and service life.
Invention content
Present invention aim to address existing positive choke throttle diameters to adjust, the serious erosion in outlet end, pressure drop temperature
Drop mutation, pressure drop regulate and control inaccurate problem, reduce the frequency of positive choke erosion failure, greatly save production time and more
It changes this into, effectively improves reducing pressure by regulating flow, erosion resistance effect and the service life of entire choke manifold.
The present invention provides a kind of mechanical adjustable positive choke, keeps oil nozzle throttle diameter adjustable, can realize accurate throttling
Decompression, while adjustable reducing anti-wearing liner makes fluid flow rate that it flows through and pressure steadily reduce, pressure drop slowly declines, under temperature drop
Drop is gentle, effectively reduces the serious erosion in positive choke outlet end, while avoiding being formed naturally because the temperature drop decline that throttles is too fast
Gas hydrate is to block choke manifold and well head.
The technical solution adopted by the present invention is：
A kind of mechanical adjustable positive choke, including manual adjustment rod, oil nozzle ontology and split-type reducing nozzle tip bushing, institute
It states split-type reducing nozzle tip bushing to be located in oil nozzle ontology, the input end of the split-type reducing nozzle tip bushing is less than outlet
End, one end of the manual adjustment rod are located between oil nozzle ontology and split-type reducing nozzle tip bushing input end, other end position
In oil nozzle body exterior.
The split-type reducing nozzle tip bushing is two valve reducing nozzle tip bushings, wherein a micro- interference of valve reducing nozzle tip bushing is embraced
Firmly another valve.
The length of the split-type reducing nozzle tip bushing be 142mm, the sized 6mm ~ 12mm of input end internal diameter, into
Segment length 112mm is gradually expanded in the long 30mm of straight sections, the sized 10mm ~ 16mm of outlet end internal diameter such as mouth.
The manual adjustment rod overall length 25mm, the long 10mm of manual adjustment rod that oil nozzle is originally reserved in vitro.
The manual adjustment rod is externally provided with taper thread, and taper thread button-type is R3/8, right-hand screw, 19 tooth of per inch, cone
Degree 1:16,55 ° of angle of thread.
The oil nozzle body length 152mm, outer diameter 38.5mm.
The oil nozzle body outer surface is equipped with screw thread, and button-type is 1-3/4 " -10UN-2A.
The split-type reducing nozzle tip bushing uses hard alloy tungsten carbide YG8 materials, thickness to be not less than 5mm.
The oil nozzle ontology and manual adjustment rod are all made of the processing of 35CrMo materials, and hardness is HB197 ~ 235.
The oil nozzle ontology and split-type reducing nozzle tip bushing by manual adjustment rod outside taper thread be tightly connected.
Beneficial effects of the present invention are：
The present invention is adjusted oil nozzle throttle diameter using mechanical adjustable mode in structure design, realizes oil nozzle essence
The purpose of true reducing pressure by regulating flow；Split-type reducing nozzle tip bushing design is variable diameters overcurrent inner cavity, fluid flow rate can be made steadily to drop
Low, pressure drop slowly reduces, and temperature drop difference is smaller, is reduced by changing oil nozzle chamber pressure and the method in flow velocity flow field, temperature field
The problem of the existing serious erosion in positive choke outlet end, while split-type reducing nozzle tip bushing uses anti-erosion material, synthesis to carry
The high erosive wear resistance of positive choke, has saved generation time and replacement cost, has greatly improved choke manifold throttling drop
Pressure, erosion resistance effect and service life, highly practical, application effect is notable.
It is further detailed below with reference to attached drawing.
Description of the drawings
Fig. 1 is a kind of mechanical adjustable positive choke schematic diagram.
Fig. 2 is A-A structural schematic diagrams.
In figure, reference numeral is：1- manual adjustment rods；2- oil nozzle ontologies；3- split-type reducing nozzle tip bushings.
Specific implementation mode
Embodiment 1：
Present invention aim to address existing positive choke throttle diameters to adjust, the serious erosion in outlet end, pressure drop temperature
Drop mutation, pressure drop regulate and control inaccurate problem, reduce the frequency of positive choke erosion failure, greatly save production time and more
It changes this into, effectively improves reducing pressure by regulating flow, erosion resistance effect and the service life of entire choke manifold.
The present invention provides a kind of mechanical adjustable positive choke as shown in Figure 1 and Figure 2, keeps oil nozzle throttle diameter adjustable,
It can realize accurate reducing pressure by regulating flow, while adjustable reducing anti-wearing liner makes fluid flow rate that it flows through and pressure steadily reduce, pressure drop
Slowly decline, temperature drop declines gently, effectively reduces the serious erosion in positive choke outlet end, while avoiding declining because of throttling temperature drop
It is too fast and form gas hydrates to block choke manifold and well head.
A kind of mechanical adjustable positive choke, including manual adjustment rod 1, oil nozzle ontology 2 and split-type reducing nozzle tip bushing
3, the split-type reducing nozzle tip bushing 3 is located in oil nozzle ontology 2, and the input end of the split-type reducing nozzle tip bushing 3 is small
In outlet end, one end of the manual adjustment rod 1 is located between 3 input end of oil nozzle ontology 2 and split-type reducing nozzle tip bushing,
The other end is located at outside oil nozzle ontology 2.
The present invention adjusts two valve reducing nozzle tip bushings 3 by manual adjustment rod 1, it is made to be moved along 2 length direction of oil nozzle ontology
Move certain axial displacement while, forced under taper thread force effect in sealing contact two valve reducing nozzle tip bushings 3 along perpendicular to
2 length direction of oil nozzle ontology moves, and adjusts certain radial displacement, to reach the throttle diameter numerical value of setting, to realize section
The adjusting of discharge orifice diameter.
The present invention is adjusted using manual adjustment rod 1, this to be carried out to oil nozzle throttle diameter using mechanical adjustable mode
It adjusts, realizes the purpose of the accurate reducing pressure by regulating flow of oil nozzle；Split-type reducing nozzle tip bushing 3 is variable diameters overcurrent inner cavity, can be made
Fluid flow rate steadily reduces, and pressure drop slowly reduces, and temperature drop difference is smaller, by changing oil nozzle chamber pressure and flow velocity flow field, temperature
The method of degree field reduces the problem of the existing serious erosion in positive choke outlet end, the comprehensive abrasion-resistance for improving positive choke
Can, generation time and replacement cost have been saved, choke manifold reducing pressure by regulating flow, erosion resistance effect has been greatly improved and uses the longevity
Life, highly practical, application effect is notable.
The present invention relates to oil/gas well surface throttling technology fields, are oil/gas well open flow or brill mill cycle ground well head
Pressure control, flow control important tool, efficiently solve choke manifold（Fixation type throttle valve）In existing positive choke section
Discharge orifice diameter can not be adjusted, the serious erosion in outlet end, pressure drop temperature drop are mutated excessive problem, be suitably applied open flow or brill after pressure break
In mill cycle ground choke manifold.
Embodiment 2：
On the basis of above-described embodiment, in the present embodiment, the split-type reducing nozzle tip bushing 3 is two valve reducing oil
Mouth bushing, wherein another valve is embraced in a micro- interference of valve reducing nozzle tip bushing.
The length of the split-type reducing nozzle tip bushing 3 be 142mm, the sized 6mm ~ 12mm of input end internal diameter,
The long 30mm of the straight sections such as import, the sized 10mm ~ 16mm of outlet end internal diameter, is gradually expanded segment length 112mm.
3 structure design of split-type reducing nozzle tip bushing is two valve reducing nozzle tip bushings, wherein a valve reducing nozzle tip bushing is micro-
Another valve is embraced in interference, is " equal diameter+overcurrent inner cavity is gradually expanded " per valve reducing nozzle tip bush structure, using erosion resistance hard
Alloy carbide tungsten YG8 materials, variable-diameter structure and wear-resistant material make positive choke have very high abrasion-resistance.
1 overall length 25mm of the manual adjustment rod, the 1 long 10mm of manual adjustment rod that oil nozzle ontology 2 is reserved outside.
The manual adjustment rod is externally provided with taper thread, and taper thread button-type is R3/8, right-hand screw, 19 tooth of per inch, cone
Degree 1:16,55 ° of angle of thread.
The oil nozzle ontology 2 length 152mm, outer diameter 38.5mm.
2 outer surface of oil nozzle ontology is equipped with screw thread, and button-type is 1-3/4 " -10UN-2A.
The split-type reducing nozzle tip bushing 3 uses hard alloy tungsten carbide YG8 materials, thickness to be not less than 5mm.
The oil nozzle ontology 2 and manual adjustment rod 1 are all made of the processing of 35CrMo materials, and hardness is HB197 ~ 235.
Oil nozzle ontology 2 and manual adjustment rod 1 are processed using 35CrMo materials, and blank ensures hardness through normalizing, modifier treatment
HB197~235；Split-type reducing nozzle tip bushing 3 uses hard alloy tungsten carbide YG8 materials, thickness to be not less than 5mm；Oil nozzle ontology
2, the defects of manual adjustment rod 1 and split-type reducing nozzle tip bushing 3 are not allow for crackle, stomata.
The oil nozzle ontology 2 and split-type reducing nozzle tip bushing 3 are sealed by the taper thread outside manual adjustment rod 1 to be connected
It connects.
The present invention relates to oil/gas well surface throttling technology fields, are oil/gas well open flow or brill mill cycle ground well head
Pressure control, flow control important tool, efficiently solve choke manifold（Fixation type throttle valve）In existing positive choke section
Discharge orifice diameter can not be adjusted, the serious erosion in outlet end, pressure drop temperature drop are mutated excessive problem, be suitably applied open flow or brill after pressure break
In mill cycle ground choke manifold.It is elaborated further below with reference to description of the drawings.
Referring to Fig. 1, a kind of choke manifold of the present invention is with the structure of erosion resistance positive choke：It is adjusted manually including 1
Pole, 2 oil nozzle ontologies, 3 split-type reducing nozzle tip bushings.Wherein oil nozzle ontology and manual adjustment rod are added using 35CrMo materials
Work, thermally treated hardness reach HB197 ~ 235, and screw thread copper facing prevents connection thread gluing；Split-type reducing nozzle tip bushing is using hard
Matter alloy carbide tungsten YG8 materials, thickness are not less than 5mm, have very high erosive wear resistance.
Oil nozzle ontology and split-type reducing nozzle tip bushing in the present invention are connected by manual adjustment rod external taper thread seal
It connects, to adjust split-type reducing nozzle tip bushing.
Oil nozzle ontology in the present invention is connect by screw thread with choke manifold fixation type throttle valve seat, in order to dismantle, more
It changes and maintains.
The present invention application mode be：
1. first oil/gas well control pressure flow, test throttling, bore mill cycle operation before, according to well head pressure, flow,
Wellhead temperature selects the mechanical adjustable positive choke of suitable original dimension.
2. determining mechanical adjustable positive choke is threaded in choke manifold by 2 outer surface of oil nozzle ontology
In fixation type throttle valve seat, while fluid erosion prevention pipe nipple is mounted in fixation type throttle valve downstream.
3. after completing the installation of mechanical adjustable positive choke, entire flow nipple manifold import connection oil, set put pipeline, go out
Mouth connects hard relief line to combustion cell or square tank（Oil well）.
4. opening well head oil, set gate progress oil/gas well control pressure flow, test throttling, boring mill cycle operation, if adopting
With uninterrupted operation is continued, mechanical adjustable positive choke in operation timely dissembling inspection fixation type throttle valve rear for a period of time is needed
Situation.
5. if finding that mechanical adjustable positive choke slightly has erosion checked after long-time use, hand should be passed through immediately
Dynamic adjusting rod 1 carries out the adjusting setting of corresponding size, avoids replacement oil nozzle, has saved the time, keeps needs of working continuously.
6. after the completion of waiting for oil/gas well control pressure flow, test throttling, boring mill cycle operation, the throttling of dismounting cleaning in time
Manifold and fixation type throttle valve seat check mechanical adjustable fixed choke（Check manual adjustment rod 1 whether flexible rotation, divide valve
Whether formula reducing nozzle tip bushing 3 has erosion）Mechanical adjustable fixed choke is replaced in maintenance, so that subsequently open flow operation makes again
With.
Claims (10)
1. a kind of mechanical adjustable positive choke, it is characterised in that：Including manual adjustment rod（1）, oil nozzle ontology（2）And split-type
Reducing nozzle tip bushing（3）, the split-type reducing nozzle tip bushing（3）Positioned at oil nozzle ontology（2）Interior, described split-type reducing oil
Mouth bushing（3）Input end be less than outlet end, the manual adjustment rod（1）One end be located at oil nozzle ontology（2）With split-type
Reducing nozzle tip bushing（3）Between input end, the other end is located at oil nozzle ontology（2）It is external.
2. a kind of mechanical adjustable positive choke according to claim 1, it is characterised in that：The split-type reducing nozzle tip
Bushing（3）For two valve reducing nozzle tip bushings, wherein another valve is embraced in a micro- interference of valve reducing nozzle tip bushing.
3. a kind of mechanical adjustable positive choke according to claim 2, it is characterised in that：The split-type reducing oil
Mouth bushing（3）Length be 142mm, the sized 6mm ~ 12mm of input end internal diameter, the long 30mm of the straight sections such as import, in outlet end
Sized 10mm ~ the 16mm of diameter, is gradually expanded segment length 112mm.
4. a kind of mechanical adjustable positive choke according to claim 1, it is characterised in that：The manual adjustment rod（1）
Overall length 25mm, oil nozzle ontology（2）Reserved manual adjustment rod outside（1）Long 10mm.
5. a kind of mechanical adjustable positive choke according to claim 4, it is characterised in that：The manual adjustment rod（1）
It is externally provided with taper thread, taper thread button-type is R3/8, right-hand screw, 19 tooth of per inch, taper 1:16,55 ° of angle of thread.
6. a kind of mechanical adjustable positive choke according to claim 1, it is characterised in that：The oil nozzle ontology（2）It is long
Spend 152mm, outer diameter 38.5mm.
7. a kind of mechanical adjustable positive choke according to claim 1, it is characterised in that：The oil nozzle ontology（2）Outside
Surface is equipped with screw thread, and button-type is 1-3/4 " -10UN-2A.
8. a kind of mechanical adjustable positive choke according to claim 1, it is characterised in that：The split-type reducing nozzle tip
Bushing（3）Using hard alloy tungsten carbide YG8 materials, thickness is not less than 5mm.
9. a kind of mechanical adjustable positive choke according to claim 1, it is characterised in that：The oil nozzle ontology（2）With
Manual adjustment rod（1）It is all made of the processing of 35CrMo materials, hardness is HB197 ~ 235.
10. a kind of mechanical adjustable positive choke according to claim 1, it is characterised in that：The oil nozzle ontology（2）With
Split-type reducing nozzle tip bushing（3）Pass through manual adjustment rod（1）Outer taper thread is tightly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610955628.6A CN106437617B (en) | 2016-10-27 | 2016-10-27 | A kind of mechanical adjustable positive choke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610955628.6A CN106437617B (en) | 2016-10-27 | 2016-10-27 | A kind of mechanical adjustable positive choke |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106437617A CN106437617A (en) | 2017-02-22 |
| CN106437617B true CN106437617B (en) | 2018-11-13 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610955628.6A Active CN106437617B (en) | 2016-10-27 | 2016-10-27 | A kind of mechanical adjustable positive choke |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080718B (en) * | 2018-01-25 | 2021-08-31 | 中国石油天然气股份有限公司 | Glib and production tree |
| CN111472732B (en) * | 2020-05-06 | 2022-05-17 | 库尔勒金沙石油机械制造有限责任公司 | Rotary wheel type nozzle sleeve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3894423A (en) * | 1973-10-15 | 1975-07-15 | Schmidt Precision Tool Co J M | Air gage cartridge |
| CN2158026Y (en) * | 1993-06-26 | 1994-03-02 | 李金云 | Filtering type pressurizing grease gun oil outlet nozzle assembly |
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| Publication number | Publication date |
|---|---|
| CN106437617A (en) | 2017-02-22 |
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