CN106401511B - A kind of high-pressure filteration choke manifold and its filtering throttling method - Google Patents
A kind of high-pressure filteration choke manifold and its filtering throttling method Download PDFInfo
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- CN106401511B CN106401511B CN201610965752.0A CN201610965752A CN106401511B CN 106401511 B CN106401511 B CN 106401511B CN 201610965752 A CN201610965752 A CN 201610965752A CN 106401511 B CN106401511 B CN 106401511B
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- 238000001914 filtration Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 17
- 210000002445 nipple Anatomy 0.000 claims abstract description 120
- 230000003628 erosive effect Effects 0.000 claims abstract description 103
- 239000012530 fluid Substances 0.000 claims description 44
- 239000000956 alloy Substances 0.000 claims description 22
- 229910045601 alloy Inorganic materials 0.000 claims description 22
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 19
- 238000009434 installation Methods 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 7
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 claims description 5
- 206010020852 Hypertonia Diseases 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 230000013011 mating Effects 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 8
- 238000012545 processing Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 125000004122 cyclic group Chemical group 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- BVPWJMCABCPUQY-UHFFFAOYSA-N 4-amino-5-chloro-2-methoxy-N-[1-(phenylmethyl)-4-piperidinyl]benzamide Chemical compound COC1=CC(N)=C(Cl)C=C1C(=O)NC1CCN(CC=2C=CC=CC=2)CC1 BVPWJMCABCPUQY-UHFFFAOYSA-N 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
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- 210000000664 rectum Anatomy 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
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- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/06—Arrangements for treating drilling fluids outside the borehole
- E21B21/063—Arrangements for treating drilling fluids outside the borehole by separating components
- E21B21/065—Separating solids from drilling fluids
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/08—Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure
-
- 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
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Mining & Mineral Resources (AREA)
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- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- Auxiliary Devices For Machine Tools (AREA)
Abstract
The present invention relates to a kind of high-pressure filteration choke manifold and its filtering throttling methods, manifold by two high-pressure filteration pipe nipples, two fixation type throttle valves, a manual needle-like formula throttle valve, seven manual platform gate valves, three erosion resistance diameter changing nipples, a pipeline threeway, even pipeline five passes to and manifold pipeline forms, the filtering manifold is one-in-and-one-out structure, side is controlled using fixation type throttle valve and high-pressure filteration pipe nipple, the other side is intermediate in line using manual needle-like formula throttle valve, fixation type throttle valve and the control of high-pressure filteration pipe nipple.Two high-pressure filteration pipe nipples and two fixation type throttle valves, it is integrated with fine filtering and the accurate control function of pressure, ensure that pipe nipple and oil nozzle replacement are convenient, erosive wear resistance is good, vulnerable part cost is saved, the continuous mill circulating effect that bores is good, practical, the service life and filtering restriction effect for improving manifold, are suitably applied oil/gas well and bore in mill cycle operation ground flow.
Description
Technical field
Present invention relates particularly to a kind of high-pressure filteration choke manifold and its filtering throttling methods, are primarily adapted for use in oil/gas well brill
It grinds in cycle operation ground flow.
Background technique
In oil/gas well drilling and grinding process, from the brill grinding fluid that pit shaft oil jacket annulus is returned out there are bridge plug clast, slips fragment,
The mechanical admixtures such as gravel, it is contemplated that bore grinding fluid and requirement is recycled, need to carry out fine filtering processing to brill grinding fluid.It is same with this
When, in order to control wellbore casing pressure, shaft deformation is prevented, needs accurately to control brill grinding fluid circulation pit shaft casing pressure
System.
According to field research, oil/gas well is bored in mill ground flow, and the brill grinding fluid for returning discharge from mineshaft annulus first passes through clast and catches
Storage captures the larger sized mechanical admixture bored in grinding fluid by chip catchment, and the brill grinding fluid after capture passes through downstream
Choke manifold, is controlled by choke manifold and bores grinding fluid pressure (casing pressure), and the brill grinding fluid after throttling continues to flow into ground sand setting
Brill grinding fluid body circulation in mud settling tank after deposited mechanical admixture, is pumped into pit shaft by tank using pump truck, bores mill to carry out circulation
Operation.
But chip catchment is bad to the capture effect for boring the mechanical admixture in grinding fluid at present, causes to bore in grinding fluid still
Some large scale mechanical admixture is flowed into the choke manifold in downstream, effectively causes choke manifold positive choke, needle-valve, short
The manifolds part erosion such as section, manual flat valve damage, increase oil nozzle, adjustable needle valve, pipe nipple replacement frequency, increase investment at
This, reduces the service life of choke manifold, influences to bore mechanical admixture treatment effect and throttling control effect in grinding fluid, constrains
Bore mill circulating filtration throttle efficiency and construction speed in scene.In addition, boring, mill ground flow is complicated, and connection equipment is more, increases in this way
The operating risk of ground flow is added.
Summary of the invention
Mechanical admixture size, content fine filtering and pit shaft in grinding fluid, which are bored, present invention aim to address oil/gas well bores grinding fluid
Property problem while circulating pressure accurately controls reaches to simplify and bores mill ground flow, continuously recycles and bore mill, reduce ground flow wind
The purpose of danger；Positive choke throttling back in existing choke manifold is solved simultaneously deteriorates that bad, replacement is difficult, the mutation of choke pressure drop temperature drop
And the acute problems such as fluid erosion prevention pipe nipple erosion damage, improve the service life and filtering restriction effect of high-pressure filteration choke manifold.
For this purpose, leading to a He including the pipeline five as manifold entrance the present invention provides a kind of high-pressure filteration choke manifold
As the pipeline five logical two of manifold outlet, pass through three channel connections between pipeline five logical one and pipeline five logical two respectively, wherein
One channel is in line channel, and fixation type throttle valve and high-pressure filteration pipe nipple, the last item channel string are serially connected in a channel
It is connected to manual needle-like formula throttle valve, fixation type throttle valve and high-pressure filteration pipe nipple.
One of nozzle installation manual platform gate valve one of the pipeline five logical one is used as manifold entrance；The pipe
One of nozzle installation manual platform gate valve two of Lu Wutong bis- is exported as manifold；
One of nozzle of pipeline five logical one connects a pipeline threeway by pipeline, which is pressed through by height
It filters pipe nipple and connects a fixation type throttle valve, one of nozzle of the fixation type throttle valve again with pipeline five logical two passes through pipeline
Connection；
One of nozzle of pipeline five logical one connects a manual needle-like formula throttle valve, the hand by high-pressure filteration pipe nipple
Dynamic needle-like formula throttle valve connects a fixation type throttle valve by pipeline, which leads to two wherein with pipeline five again
One nozzle is connected to by pipeline；
The nozzle that one of nozzle of pipeline five logical one passes through the direct connecting pipeline five of pipeline logical two；
Manual platform gate valve is respectively provided in all connecting pipes.
The high-pressure filteration pipe nipple includes high-pressure filteration pipe nipple one and high-pressure filteration pipe nipple two；The fixation type throttle
Valve includes fixation type throttle valve one and fixation type throttle valve two；
Three channels are respectively as follows:
A nozzle, manual platform gate valve three, pipeline threeway, high-pressure filteration pipe nipple of first channel by pipeline five logical one
One, a nozzle of fixation type throttle valve one, manual platform gate valve four, pipeline five logical two is sequentially communicated composition；
Article 2 channel is led to two nozzle by the nozzle, manual platform gate valve five, pipeline five of pipeline five logical one
It is sequentially communicated composition；
A nozzle, manual platform gate valve six, high-pressure filteration pipe nipple two, manual needle of the Article 3 channel by pipeline five logical one
One nozzle of pattern throttle valve, fixation type throttle valve two, manual platform gate valve seven, pipeline five logical two is sequentially communicated composition.
The high-pressure filteration pipe nipple one and high-pressure filteration pipe nipple two is provided with to be cut using the difference of line cutting technology processing
Stitch the erosion resistance hard alloy filter core cylinder of size.
The high-pressure filteration pipe nipple one and high-pressure filteration pipe nipple two use 35CrMo material, and thermally treated hardness reaches
HBW197~235；Filter core cylinder use erosion resistance hard alloy tungsten carbide YG8 material, thermally treated hardness up to HRC92~
95。
Erosion resistance reducing nozzle tip one is housed, one downstream of fixation type throttle valve is equipped with inside the fixation type throttle valve one
Erosion resistance diameter changing nipple one, fixation type throttle valve one are logical by erosion resistance diameter changing nipple one, manual platform gate valve four and pipeline five
Two nozzle connection；
Erosion resistance reducing nozzle tip two is housed, two downstream of fixation type throttle valve is equipped with inside the fixation type throttle valve two
Erosion resistance diameter changing nipple two, fixation type throttle valve two are logical by erosion resistance diameter changing nipple two, manual platform gate valve seven and pipeline five
Two nozzle connection.
The manual needle-like formula throttle valve downstream is equipped with erosion resistance diameter changing nipple three, and manual needle-like formula throttle valve passes through
Erosion resistance diameter changing nipple three is connected to fixation type throttle valve two.
The variable diameters of three inner cavity of erosion resistance diameter changing nipple one, erosion resistance diameter changing nipple two and erosion resistance diameter changing nipple
Interference fit has hard alloy tungsten carbide YG8 bushing in structure length, and with a thickness of 3.0mm, hardness reaches HRC92~95；Described
The chock pressure difference adjustable range of erosion resistance reducing nozzle tip one and erosion resistance reducing nozzle tip two is 0.1~20MPa.
The connection of the high-pressure filteration pipe nipple one and high-pressure filteration pipe nipple two is used by appointing connection, by appointing connector to be 3 "-
1502；Other connections are all made of flanged joint in manifold, and flange is 350 flange of 2-7/8 " EUE R27 standard, and mating bolt is
M27 × 3 × 175 studs.
A kind of filtering throttling method of high-pressure filteration choke manifold, includes the following steps:
(1) the manifold entrance of pipeline five logical one is connect with wellhead casing pipe gate valve；The manifold outlet of pipeline five logical two is logical
Ground oil conduit and soft pipeline is crossed to be attached with mud settling tank；
(2) erosion resistance hard of the installation with different slot sizes in high-pressure filteration pipe nipple one and high-pressure filteration pipe nipple two
Alloy filter core cylinder；Also, erosion resistance reducing nozzle tip is installed respectively in fixation type throttle valve one and fixation type throttle valve two
One and erosion resistance reducing nozzle tip two；
(3) when boring mill circulation, turn off well mouth oil pipe gate valve, open wellhead casing pipe gate valve, open manual platform gate valve one, hand
Dynamic flat gate valve three, manual platform gate valve four, manual platform gate valve two, manual platform gate valve seven, manual platform gate valve six and hand
Dynamic needle-like formula throttle valve, closes manual platform gate valve five, the size of the mechanical admixture in brill grinding fluid that pit shaft is returned out, content into
Row filtering is bored mill circulating pressure throttling with pit shaft and is controlled；Pit shaft circulating pressure it is excessively high or filtering choke manifold hypertonia when,
Manual platform gate valve five is opened, manual platform gate valve three, manual platform gate valve four, manual platform gate valve seven and manual platform are closed
Gate valve six), high pressure bores grinding fluid and exports outflow from the manifold of pipeline five logical two, and mill fluid pressure is bored in release；
(4) mill is bored after circulation terminates, termination of pumping pressure release, closed-in well muzzle sluice valve, disassembly, cleaning are filtered high in choke manifold
It is erosion resistance hard alloy filter core cylinder and fixation type throttle valve one in press filtration pipe nipple one and high-pressure filteration pipe nipple two, solid
Erosion resistance reducing nozzle tip in fixed pattern throttle valve two checks all manual platform gate valve service conditions, checks that erosion resistance variable diameter is short
Save one, three service condition of erosion resistance diameter changing nipple two and erosion resistance diameter changing nipple, maintenance or replacement erosion resistance hard alloy filtering
The manifolds parts such as filter core cylinder, erosion resistance reducing nozzle tip, flat gate valve, erosion resistance diameter changing nipple are circulated throughout to carry out boring mill again
Filter throttling service.
Beneficial effects of the present invention: this high-pressure filteration choke manifold provided by the invention and its filtering throttling method, it should
Choke manifold is filtered by switching different manual platform gate valves, the combination of manual needle-like formula throttle valve, realizes and pit shaft is returned out
Brill grinding fluid in mechanical admixture size, content fine filtering and pit shaft bore grinding fluid circulating pressure accurate control, improve brill
Filter throttle efficiency in grinding fluid ground.Erosive wear resistance is good on the whole for manifold, and replacement is convenient, saves vulnerable part cost, continuous to bore mill
Circulating effect is good, practical, improves the service life and and filtering restriction effect of manifold.
Detailed description of the invention
The present invention is described in further details below with reference to attached drawing.
Fig. 1 is distributed architecture schematic diagram of the invention.
Description of symbols: 1, manual platform gate valve one；2, manual platform gate valve three；3, pipeline threeway；4, high-pressure filteration
Pipe nipple one；5, fixation type throttle valve one；6, erosion resistance reducing nozzle tip one；7, erosion resistance diameter changing nipple one；8, manual platform gate valve
Four；9, manual platform gate valve five；10, pipeline five logical two；11, manual platform gate valve two；12, manual platform gate valve seven；13, resistance to punching
Lose diameter changing nipple two；14, fixation type throttle valve two；15, erosion resistance reducing nozzle tip two；16, erosion resistance diameter changing nipple three；17, hand
Dynamic needle-like formula throttle valve；18, high-pressure filteration pipe nipple two；19, manual platform gate valve six；20, pipeline five logical one.
Specific embodiment
Embodiment 1:
The present embodiment provides a kind of high-pressure filteration choke manifolds, as shown in Figure 1, include as manifold entrance pipeline five it is logical
1 and as manifold outlet pipeline five logical 2 10, it is logical by three respectively between pipeline five logical 1 and pipeline five logical 2 10
Road connection a, wherein channel is in line channel, is serially connected with fixation type throttle valve and high-pressure filteration pipe nipple in a channel, most
Latter channel is serially connected with manual needle-like formula throttle valve, fixation type throttle valve and high-pressure filteration pipe nipple.
One of nozzle installation manual platform gate valve 1 of the pipeline five logical 1 is used as manifold entrance；It is described
One of nozzle installation manual platform gate valve 2 11 of pipeline five logical 2 10 exported as manifold；
One of nozzle of pipeline five logical 1 connects a pipeline threeway by pipeline, which passes through high pressure
It filters pipe nipple and connects a fixation type throttle valve, one of nozzle of the fixation type throttle valve again with pipeline five logical 2 10 passes through
Pipeline connection；
One of nozzle of pipeline five logical 1 connects a manual needle-like formula throttle valve by high-pressure filteration pipe nipple, should
Manual needle-like formula throttle valve connects a fixation type throttle valve by pipeline, which leads to 2 10 with pipeline five again
One of nozzle is connected to by pipeline；
The nozzle that one of nozzle of pipeline five logical 1 passes through the direct connecting pipeline five of pipeline logical 2 10；
Manual platform gate valve is respectively provided in all connecting pipes.
This structure of the present embodiment is that oil/gas well bores mechanical admixture fine filtering and pit shaft brill grinding fluid circulation pressure in grinding fluid
One of the corollary apparatus of power control is suitably applied oil/gas well and bores in mill cycle operation ground flow.This high-pressure filteration throttling
Manifold is one-in-and-one-out structure, and side is controlled using fixation type throttle valve and high-pressure filteration pipe nipple, and the other side uses manual needle-like
Formula throttle valve, fixation type throttle valve and the control of high-pressure filteration pipe nipple, it is intermediate in line.The pressure voltage of manifold mesohigh filtering pipe nipple is wanted
Higher than the pressure value for the brill grinding fluid to be filtered, built with the erosion resistance of the different slot sizes using line cutting technology processing
Hard alloy filter core cylinder can reduce size, content that oil/gas well bores mechanical admixture in grinding fluid, effectively control pit shaft and bore mill
Liquid circulating pressure, it is ensured that controlledly carry out continuous circulation drilling and grinding operation.Meanwhile utilizing the variable diameter knot of positive choke and fluid erosion prevention
Structure, flow velocity and pressure steadily reduce when the brill grinding fluid for returning out it from mineshaft annulus flows through the manifold, and pressure drop slowly reduces, temperature drop
Decline is gentle, so that accurately control pit shaft bores grinding fluid circulating pressure, effectively solves existing choke manifold positive choke and fluid erosion prevention
The erosion of pipe nipple.
Embodiment 2:
As shown in connection with fig. 1, in the present embodiment, the high-pressure filteration pipe nipple includes that high-pressure filteration pipe nipple 1 and height press through
Filter pipe nipple 2 18；The fixation type throttle valve includes fixation type throttle valve 1 and fixation type throttle valve 2 14；Above-mentioned two reality
Three in example channels are applied specifically to be respectively as follows:
A nozzle, manual platform gate valve three 2, pipeline threeway 3, high-pressure filteration of first channel by pipeline five logical 1
One nozzle of pipe nipple 1, fixation type throttle valve 1, manual platform gate valve 48, pipeline five logical 2 10 is sequentially communicated composition；
Article 2 channel is led to one of 2 10 by the nozzle, manual platform gate valve 59, pipeline five of pipeline five logical 1
Nozzle is sequentially communicated composition；
Article 3 channel by a nozzle of pipeline five logical 1, manual platform gate valve 6 19, high-pressure filteration pipe nipple 2 18,
One nozzle of manual needle-like formula throttle valve 17, fixation type throttle valve 2 14, manual platform gate valve 7 12, pipeline five logical 2 10 according to
Secondary connection composition.
The present embodiment is selected by opening or closing different manual platform gate valves, manual needle-like formula throttle valve combination
It selects the erosion resistance hard alloy filter core cylinder for the different slot sizes being pre-installed in high-pressure filteration pipe nipple and is mounted on
Various sizes of erosion resistance reducing nozzle tip in fixation type throttle valve, control two-way fine filtering throttle, are in line all the way, thus real
Mechanical admixture size, the fine filtering of content and pit shaft in the brill grinding fluid for returning out pit shaft in mill cyclic process is bored after existing pressure break to bore
The accurate control of grinding fluid circulating pressure.
Embodiment 3:
In order to be able to achieve the structured filter function of saying in two embodiments, the present embodiment is further described in detail,
In the present embodiment, high-pressure filteration pipe nipple 1 and high-pressure filteration pipe nipple 2 18 are provided with the difference processed using line cutting technology
The erosion resistance hard alloy filter core cylinder of slot size.
One 5 inside of fixation type throttle valve is equipped with erosion resistance reducing nozzle tip 1, and one 5 downstream of fixation type throttle valve is equipped with resistance to
Erosion diameter changing nipple 1, fixation type throttle valve 1 pass through erosion resistance diameter changing nipple 1, manual platform gate valve 48 and pipeline five
Logical 2 10 nozzle connection；2 14 inside of fixation type throttle valve is equipped with erosion resistance reducing nozzle tip 2 15, fixation type throttle valve
2 14 downstreams are equipped with erosion resistance diameter changing nipple 2 13, fixation type throttle valve 2 14 by erosion resistance diameter changing nipple 2 13, manually
Flat gate valve 7 12 is connected to a nozzle of pipeline five logical 2 10.
Manual 17 downstream of needle-like formula throttle valve is equipped with erosion resistance diameter changing nipple 3 16, and manual needle-like formula throttle valve 17 passes through
Erosion resistance diameter changing nipple 3 16 is connected to fixation type throttle valve 2 14.
The present embodiment is also according to giving a set of specific manifold size, manifold long 2800mm, wide 1750mm, high 520mm,
Pipeline latus rectum 65mm(2-9/16 "), pressure-bearing 35MPa(5000psi), throttling choke size is replaceable from 3~18mm.
High-pressure filteration pipe nipple pressure voltage is in 70MPa or more, outer diameter 102mm, internal diameter 70mm, length 580mm, by appointing button-type
3″-1502；Filter core cylinder outer diameter 54mm, internal diameter 40mm, length 465mm, surface screw thread button-type 1-3/4-10UN-2A, line are cut
Cut processing pore length 0.5mm, width 0.2mm, pressure-resistant 70MPa.High-pressure filteration pipe nipple 1 and high-pressure filteration pipe nipple 2 18 use
35CrMo material, thermally treated hardness reach HBW197~235；Filter core cylinder uses erosion resistance hard alloy tungsten carbide YG8 material
Material, thermally treated hardness reach HRC92~95, have very high erosive wear resistance, and process different cut using line cutting technology
Size is stitched, to realize fine filtering and the control to size mechanical admixtures different in brill grinding fluid；High-pressure filteration nipple body and mistake
The defects of processing of filter filter core cylinder is not allow for crackle, stomata.
The variable diameters of 3 16 inner cavity of erosion resistance diameter changing nipple 1, erosion resistance diameter changing nipple 2 13 and erosion resistance diameter changing nipple
Interference fit has hard alloy tungsten carbide YG8 bushing in structure length, and with a thickness of 3.0mm, hardness reaches HRC92~95, has very
High erosive wear resistance.Erosion resistance reducing nozzle tip chock pressure difference can be adjusted between 0.1~20MPa, with design pressure
Error is within the scope of ± 0.4MPa.
The connection of high-pressure filteration pipe nipple 1 and high-pressure filteration pipe nipple 2 18 is used by appointing connection, by appointing connector to be 3 "-
1502；Other connections are all made of flanged joint in manifold, and flange is 350 flange of 2-7/8 " EUE R27 standard, and mating bolt is
M27 × 3 × 175 studs.
In the present embodiment, the slot for the erosion resistance hard alloy filter core cylinder installed in the high-pressure filteration pipe nipple in manifold
The size selection for the erosion resistance reducing nozzle tip installed in size selection and fixation type throttle valve should all bore mill circulation according to scene
In the process wellhead casing pipe pressure, bore mill discharge capacity and bore mechanical admixture dimensional conditions in grinding fluid and determine.
Embodiment 4:
The present embodiment provides a kind of filtering throttling methods of high-pressure filteration choke manifold, include the following steps:
(1) the manifold entrance of pipeline five logical 1 is connect with wellhead casing pipe gate valve；The manifold of pipeline five logical 2 10 is gone out
Mouth is attached by ground oil conduit and soft pipeline with mud settling tank；
(2) erosion resistance of the installation with different slot sizes in high-pressure filteration pipe nipple 1 and high-pressure filteration pipe nipple 2 18
Hard alloy filter core cylinder；Also, erosion resistance change is installed respectively in fixation type throttle valve 1 and fixation type throttle valve 2 14
Diameter oil nozzle 1 and erosion resistance reducing nozzle tip 2 15；
(3) when boring mill circulation, turn off well mouth oil pipe gate valve, open wellhead casing pipe gate valve, open manual platform gate valve 1,
Manual platform gate valve 32, manual platform gate valve 48, manual platform gate valve 2 11, manual platform gate valve 7 12, manual platform lock
Valve 6 19 and manual needle-like formula throttle valve 17 close manual platform gate valve 59, the mechanical admixture in brill grinding fluid returned out to pit shaft
Size, content be filtered and pit shaft bore mill circulating pressure throttling control；Pit shaft circulating pressure it is excessively high or filtering throttle pipe
When remittance hypertonia, manual platform gate valve 59 is opened, closes manual platform gate valve 32, manual platform gate valve 48, manual platform
Gate valve 7 12 and manual platform gate valve 6 19, high pressure bore grinding fluid and export outflow from the manifold of pipeline five logical 2 10, and grinding fluid is bored in release
Body pressure；
(4) mill is bored after circulation terminates, termination of pumping pressure release, closed-in well muzzle sluice valve, disassembly, cleaning are filtered high in choke manifold
Erosion resistance hard alloy filter core cylinder and fixation type throttle valve one in press filtration pipe nipple 1 and high-pressure filteration pipe nipple 2 18
5, the erosion resistance reducing nozzle tip in fixation type throttle valve 2 14 checks all manual platform gate valve service conditions, checks erosion resistance
3 16 service condition of diameter changing nipple 1, erosion resistance diameter changing nipple 2 13 and erosion resistance diameter changing nipple, maintenance or replacement erosion resistance are hard
The manifolds parts such as matter alloy filter core cylinder, erosion resistance reducing nozzle tip, flat gate valve, erosion resistance diameter changing nipple, to carry out again
Bore mill circulating filtration throttling service.
In conclusion this high-pressure filteration choke manifold of the invention, devises two high-pressure filteration pipe nipples in manifold,
Ensure the fine filtering of mechanical admixture size, content in the brill grinding fluid bored after pressure break and returned out in mill cyclic process to pit shaft, really
It has protected with by appointing the high-pressure filteration pipe nipple replacement of connector convenient, has realized and do not interrupt, be carried out continuously and bore at grinding fluid circulating filtration
Reason and control have achieved the purpose that bore grinding fluid circulating filtration and utilize；Since design is equipped with difference and cuts in high-pressure filteration pipe nipple
The erosion resistance hard alloy filter core cylinder of size is stitched, erosive wear resistance is good.Meanwhile two fixation type throttles are devised in manifold
Valve, it is ensured that bore erosion resistance reducing nozzle tip in mill cyclic process after pressure break and be convenient for changing, due to fixation type throttle valve in manifold
Interior design is equipped with special various sizes of erosion resistance reducing nozzle tip, and the erosion resistance variable diameter that downstream is equipped with special designing is short
Section, and the erosion resistance diameter changing nipple of special designing is equally installed in manual needle-like formula throttle valve downstream, improve oil nozzle, pipe nipple
Erosion wear resistance, realize to pit shaft bore grinding fluid circulating pressure accurate control.
The foregoing examples are only illustrative of the present invention, does not constitute the limitation to protection scope of the present invention, all
It is within being all belonged to the scope of protection of the present invention with the same or similar design of the present invention.
Claims (1)
1. a kind of filtering throttling method of high-pressure filteration choke manifold, which is characterized in that the high-pressure filteration throttling that this method uses
Manifold, the pipeline five for leading to one (20) including the pipeline five as manifold entrance and exporting as manifold lead to two (10), and pipeline five is logical
One (20) and pipeline five lead between two (10) respectively by three channel connections, wherein a channel is in line channel, and one logical
Fixation type throttle valve and high-pressure filteration pipe nipple are serially connected in road, the last item channel is serially connected with manual needle-like formula throttle valve, fixation
Formula throttle valve and high-pressure filteration pipe nipple；
The high-pressure filteration pipe nipple includes high-pressure filteration pipe nipple one (4) and high-pressure filteration pipe nipple two (18)；Described is fixed
Throttle valve includes fixation type throttle valve one (5) and fixation type throttle valve two (14)；
Three channels are respectively as follows:
First channel is pressed through by a nozzle, manual platform gate valve three (2), pipeline threeway (3), the height that pipeline five leads to one (20)
Filter pipe nipple one (4), fixation type throttle valve one (5), manual platform gate valve four (8), pipeline five lead to a nozzle of two (10) successively
Connection composition；
Article 2 channel leads to the one of two (10) by the nozzle, manual platform gate valve five (9), pipeline five that pipeline five leads to one (20)
A nozzle is sequentially communicated composition；
Article 3 channel is led to a nozzle, manual platform gate valve six (19), high-pressure filteration pipe nipple two of one (20) by pipeline five
(18), manual needle-like formula throttle valve (17), fixation type throttle valve two (14), manual platform gate valve seven (12), pipeline five logical two
(10) a nozzle is sequentially communicated composition；
The high-pressure filteration pipe nipple one (4) and high-pressure filteration pipe nipple two (18) is provided with the difference processed using line cutting technology
The erosion resistance hard alloy filter core cylinder of slot size；
The high-pressure filteration pipe nipple one (4) and high-pressure filteration pipe nipple two (18) uses 35CrMo material, and thermally treated hardness reaches
HBW197~235；Filter core cylinder use erosion resistance hard alloy tungsten carbide YG8 material, thermally treated hardness up to HRC92~
95；
Erosion resistance reducing nozzle tip one (6), fixation type throttle valve one (5) downstream are housed inside the fixation type throttle valve one (5)
Erosion resistance diameter changing nipple one (7) is installed, fixation type throttle valve one (5) passes through erosion resistance diameter changing nipple one (7), manual platform lock
Valve four (8) is connected to the nozzle that pipeline five leads to two (10)；
Erosion resistance reducing nozzle tip two (15) is housed, under fixation type throttle valve two (14) inside the fixation type throttle valve two (14)
Trip is equipped with erosion resistance diameter changing nipple two (13), fixation type throttle valve two (14) by erosion resistance diameter changing nipple two (13), manually
Flat gate valve seven (12) is connected to the nozzle that pipeline five leads to two (10)；
Manual needle-like formula throttle valve (17) downstream is equipped with erosion resistance diameter changing nipple three (16), manual needle-like formula throttle valve
(17) it is connected to by erosion resistance diameter changing nipple three (16) with fixation type throttle valve two (14)；
Described erosion resistance diameter changing nipple one (7), erosion resistance diameter changing nipple two (13) and erosion resistance diameter changing nipple three (16) inner cavity
Variable diameters structure length on interference fit have hard alloy tungsten carbide YG8 bushing, with a thickness of 3.0mm, hardness up to HRC92~
95；The chock pressure difference adjustable range of the erosion resistance reducing nozzle tip one (6) and erosion resistance reducing nozzle tip two (15) be 0.1~
20MPa；
One of nozzle installation manual platform gate valve one (1) that the pipeline five leads to one (20) is used as manifold entrance；It is described
Pipeline five lead to two (10) one of nozzle installation manual platform gate valve two (11) as manifold outlet；
Pipeline five leads to one of nozzle of one (20) by the threeway of connecting pipe of pipeline road, and the pipeline threeway is short by high-pressure filteration
Section one is connected and fixed formula throttle valve one, and one of nozzle which leads to two (10) with pipeline five again and again passes through pipe
Road connection；
One of nozzle that pipeline five leads to one (20) connects manual needle-like formula throttle valve by high-pressure filteration pipe nipple two, this is manually
Needle-like formula throttle valve is connected and fixed formula throttle valve two by pipeline, which leads to its of two (10) with pipeline five again
In a nozzle pass through pipeline be connected to；
One of nozzle that pipeline five leads to one (20) leads to a nozzle of two (10) by the direct connecting pipeline five of pipeline；
Manual platform gate valve is respectively provided in all connecting pipes；
The connection of the high-pressure filteration pipe nipple one (4) and high-pressure filteration pipe nipple two (18) is used by appointing connection, by appointing connector to be
3"-1502；Other connections are all made of flanged joint in manifold, and flange is 350 flange of 2-7/8 " EUE R27 standard, mating bolt
For M27 × 3 × 175 studs；
This method comprises the following steps:
(1) the manifold entrance that pipeline five leads to one (20) is connect with wellhead casing pipe gate valve；The manifold that pipeline five leads to two (10) is gone out
Mouth is attached by ground oil conduit and soft pipeline with mud settling tank；
(2) erosion resistance of the installation with different slot sizes in high-pressure filteration pipe nipple one (4) and high-pressure filteration pipe nipple two (18)
Hard alloy filter core cylinder；Also, resistance to punching is installed respectively in fixation type throttle valve one (5) and fixation type throttle valve two (14)
Lose reducing nozzle tip one (6) and erosion resistance reducing nozzle tip two (15)；
(3) when boring mill circulation, turn off well mouth oil pipe gate valve, open wellhead casing pipe gate valve, open manual platform gate valve one (1), hand
Dynamic flat gate valve three (2), manual platform gate valve four (8), manual platform gate valve two (11), manual platform gate valve seven (12), manually
Flat gate valve six (19) and manual needle-like formula throttle valve (17) are closed manual platform gate valve five (9), the brill grinding fluid returned out to pit shaft
In mechanical admixture size, content be filtered and pit shaft bore mill circulating pressure throttling control；It is excessively high in pit shaft circulating pressure
Or when filtering choke manifold hypertonia, open manual platform gate valve five (9), close manual platform gate valve three (2), manual platform
Gate valve four (8), manual platform gate valve seven (12) and manual platform gate valve six (19), high pressure bore grinding fluid and lead to two (10) from pipeline five
Mill fluid pressure is bored in manifold outlet outflow, release；
(4) mill is bored after circulation terminates, termination of pumping pressure release, closed-in well muzzle sluice valve, disassembly, cleaning filtering choke manifold mesohigh mistake
Filter pipe nipple one (4) and erosion resistance hard alloy filter core cylinder and fixation type throttle valve one in high-pressure filteration pipe nipple two (18)
(5), the erosion resistance reducing nozzle tip in fixation type throttle valve two (14) checks all manual platform gate valve service conditions, checks resistance to
Erosion diameter changing nipple one (7), erosion resistance diameter changing nipple two (13) and erosion resistance diameter changing nipple three (16) service condition, maintenance or more
Change erosion resistance hard alloy filter core cylinder, erosion resistance reducing nozzle tip, flat gate valve, erosion resistance diameter changing nipple, so as to again into
Row bores mill circulating filtration throttling service.
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| 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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| CN106401511A (en) | 2017-02-15 |
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