CN110469286A - A kind of combined pressure wellhead assembly for pressure break with pressure - Google Patents
A kind of combined pressure wellhead assembly for pressure break with pressure Download PDFInfo
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- CN110469286A CN110469286A CN201910673116.4A CN201910673116A CN110469286A CN 110469286 A CN110469286 A CN 110469286A CN 201910673116 A CN201910673116 A CN 201910673116A CN 110469286 A CN110469286 A CN 110469286A
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- 241000254175 Anthonomus grandis Species 0.000 claims abstract description 44
- 239000007788 liquid Substances 0.000 claims abstract description 38
- 238000010276 construction Methods 0.000 claims abstract description 30
- 238000002347 injection Methods 0.000 claims abstract description 23
- 239000007924 injection Substances 0.000 claims abstract description 23
- 230000005484 gravity Effects 0.000 claims abstract description 10
- 230000002706 hydrostatic effect Effects 0.000 claims abstract description 10
- 230000000712 assembly Effects 0.000 claims abstract 2
- 238000000429 assembly Methods 0.000 claims abstract 2
- 239000000725 suspension Substances 0.000 claims description 31
- 230000007246 mechanism Effects 0.000 claims description 30
- 238000007789 sealing Methods 0.000 claims description 25
- 239000012530 fluid Substances 0.000 claims description 4
- 241000282472 Canis lupus familiaris Species 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 10
- 210000004907 gland Anatomy 0.000 description 3
- 239000004519 grease Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229920006247 high-performance elastomer Polymers 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/04—Casing heads; Suspending casings or tubings in well heads
-
- 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
-
- 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
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
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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)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of combined pressure wellhead assemblies for pressure break with pressure, including flap type (1), injection head (2), fracturing control device (3) and boll-weevil hanger (4)；Flap type (1) upper end connects working rig with pressure, and lower end connects injection head, for higher-pressure region and Operating Pressure machine to be isolated in pressing crack construction；Injection head (2) lower end connects fracturing control device, for connecting ground fracturing pipeline；Wellhead flange is connected below fracturing control device (3), for clamping boll-weevil hanger (4), oil jacket annulus is isolated, the load that liquid high pressure when bearing tubing string self gravity, liquid column hydrostatic pressure and pressure break generates；Pressure break boll-weevil hanger (4) is for movable tubing string after connecting fracturing string and pressing；It solves the problems, such as existing pressing crack construction with pressure or needs secondary dismounting Operating Pressure equipment or high-altitude is needed to set up the accessories such as high pressure straight tube.
Description
Technical field
The present invention relates to oil field fracturing technical field of construction, specifically a kind of well head for high pressure well pressure break with pressure
Equipment.
Background technique
Fracturing integrated construction with pressure at present is frequently with two ways.First is that being risen before pressing crack construction using Operating Pressure equipment
Out after former well casing column, tripping in fracturing string, Operating Pressure equipment Removal is subjected to pressure break, again sets Operating Pressure after pressure break
It is standby to be reinstalled in well head, it acts fracturing string and tripping in completion tubular column completes entire construction；Second is that operating equipment is pressed in not detachment
Pressing crack construction is carried out, is gone out after former well casing column, tripping in fracturing string using Operating Pressure equipment in Operating Pressure equipment the top
High-tension fitting, high pressure straight tube connection ground fracturing pipeline progress pressure break are installed, recycle Operating Pressure equipment to act pressure break after pressure
Tubing string, tripping in completion tubular column complete entire construction；The former needs secondary dismounting Operating Pressure equipment, long construction period, labor intensity
Greatly, the latter's high pressure straight tube is connected to the high-altitude 8m or so, and construction personnel, which need to ascend a height, connects installation, and high pressure straight tube needs ground supports
And guy wire is fixed, pressure break time is long, and the vibration of fracturing process mesohigh straight tube easily causes security risk.
Summary of the invention
In view of this, the present invention provides a kind of combined pressure wellhead assembly for pressure break with pressure, solves existing pressure break with pressure and apply
Work or the problem of need secondary dismounting Operating Pressure equipment or need the accessories such as high-altitude erection high pressure straight tube.
For achieving the above object, a kind of combined pressure wellhead assembly for pressure break with pressure, which is characterized in that packet
It includes:
Flap type, injection head, fracturing control device and boll-weevil hanger；
The flap type, the upper end connect working rig with pressure, and lower end connects the injection head, high for being isolated in pressing crack construction
Pressure area and Operating Pressure machine；
The injection head, lower end connect the fracturing control device, have main channel and wing passage；
The main channel and wing passage connection；
The wing passage connects ground fracturing pipeline；
The main channel is the entrance that fracturing fluid enters pressure break oil pipe；
The fracturing control device, lower section connect wellhead flange, comprising: shell；
There is sealing locking suspension mechanism on the shell；
The sealing locks suspension mechanism, for clamping the boll-weevil hanger, oil jacket annulus is isolated, bears tubing string itself weight
The load that liquid high pressure when power, liquid column hydrostatic pressure and pressure break generates；
The pressure break boll-weevil hanger, for movable tubing string after connecting fracturing string and pressing.
Preferably, the flap type, comprising: valve body and valve plate；
The valve body, top studding connect working rig with pressure, and lower section studding connects injection head, and has center flow channels；It is described
There is valve seat, the valve plate and the valve seat cooperate for opening or closing the center flow channels in the valve chamber of valve body；
The center flow channels, for down-hole high pressure area and the Operating Pressure machine to be connected or be isolated in pressing crack construction.
Preferably, one end connection guide of the valve plate, the other end connect hydraulic drive mechanism；
The guide rod, for guiding the valve plate to move horizontally；
The hydraulic drive mechanism, for driving the valve plate to move horizontally.
Preferably, the sealing locks suspension mechanism, comprising: sealing locking flashboard assembly and positioning suspension flashboard assembly；
The sealing locks flashboard assembly, for clamping and locking the boll-weevil hanger；
Flashboard assembly is hung in the positioning, for clamping the boll-weevil hanger, and bears the self gravity of the tubing string, hydrostatic
The load that liquid high pressure when column pressure and pressure break generates.
Preferably, the sealing locks flashboard assembly, comprising: sealing locking flashboard assembly and the first hydraulic drive mechanism；
The sealing locks flashboard assembly, for locking the boll-weevil hanger, including locking flashboard, lock seal and slips
Body；
The locking flashboard front end connects the lock seal and the slips body；
The lock seal is rubber material, for oil jacket annulus to be isolated；
The slips body is two pieces of semi-circular slip dogs, for clamping and locking the boll-weevil hanger.
Preferably, first hydraulic drive mechanism, comprising: liquid presses piston pole, hydraulic piston, hydraulic cylinder and hydraulic line
Interface；
The liquid presses piston pole is connect with the rear end of the locking flashboard；The hydraulic piston in the hydraulic cylinder is in the liquid
The liquid presses piston pole is driven to move back and forth under the hydraulic action of pressure pipe line interface input；
The reciprocating motion, for drive the locking flashboard drive the slips body clamp and lock the boll-weevil hanger and
Oil jacket annulus is isolated in the lock seal.
Preferably, the liquid presses piston pole is also connected with hand screw；
The hand screw, for liquid presses piston pole described in manual locking.
Preferably, flashboard assembly is hung in the positioning, comprising: positioning suspension flashboard assembly and the second hydraulic drive mechanism；
Flashboard assembly is hung in the positioning, for clamping the boll-weevil hanger and bearing self gravity, the hydrostatic of the tubing string
The load that liquid high pressure when column pressure and pressure break generates；
Second hydraulic drive mechanism, for driving the positioning suspension flashboard assembly to clamp the boll-weevil hanger.
Preferably, flashboard assembly is hung in the positioning, comprising: positioning suspension flashboard；
Flashboard is hung in the positioning, and front end connects hangings seals, for clamping the boll-weevil hanger and bearing the pipe
The load that liquid high pressure when the self gravity of column, liquid column hydrostatic pressure and pressure break generates；
The hangings seals, for insulating oil jacket annulus.
Preferably, the main channel lower part is fixed with anti-wearing liner.
The invention has the following beneficial effects:
Apparatus of the present invention fracturing work construction before can directly integral installation construction well well head on, Operating Pressure equipment it
Under, entire work progress can be completed the with pressure of all tubing strings without the secondary dismounting of Operating Pressure equipment and remove；Before pressure break, ground
Pressure break pipeline need to be only connected on any wing passage of the injection head away from ground 1.2m or so, be not necessarily to high-tension fitting and ground branch
The safety devices such as support, guy wire, it is easy to operate, cost is saved, it is time saving and energy saving.
Because oil-water well pressure break with pressure is not necessarily to repeated disassembled and assembled wellhead equipment, a large amount of construction times are saved, worker is greatly reduced
Labor intensity avoids environmental pollution caused by disassemblerassembler；Integral construction height is reduced simultaneously, reduces construction safety
Risk.
Meanwhile the mode that the present invention uses fracturing control device with pressure to combine with pressure break flap type with pressure is instead of traditional construction
Triple ram preventer used in mode has ensured well control safety while meeting construction demand.
Detailed description of the invention
By the description below with reference to attached drawing to the embodiment of the present invention, the above and other purposes of the present invention, feature and
Advantage is apparent, in the accompanying drawings:
Fig. 1 is the combined pressure wellhead assembly structural schematic diagram for pressure break with pressure of the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the flap type of the embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the injection head of the embodiment of the present invention；
Fig. 4 is the structural schematic diagram of the fracturing control device of the embodiment of the present invention；
Fig. 5 is the structural schematic diagram of the boll-weevil hanger of the embodiment of the present invention.
Specific embodiment
Below based on embodiment, present invention is described, but it is worth noting that, the present invention is not limited to these realities
Apply example.It is detailed to describe some specific detail sections below in datail description of the invention.However, for not detailed
The present invention can also be understood completely in the part described to the greatest extent, those skilled in the art.
In addition, it should be understood by one skilled in the art that provided attached drawing simply to illustrate that the purpose of the present invention,
Feature and advantage, attached drawing are not to be actually drawn to scale.
Meanwhile unless the context clearly requires otherwise, "include", "comprise" etc. otherwise throughout the specification and claims
Similar word should be construed as the meaning for including rather than exclusive or exhaustive meaning；That is, being " including but not limited to "
Meaning.
Fig. 1 is the combined pressure wellhead assembly structural schematic diagram for pressure break with pressure of the embodiment of the present invention；As shown in Figure 1: one
Kind is used for the combined pressure wellhead assembly of pressure break with pressure, including flap type 1, injection head 2, fracturing control device 3 and boll-weevil hanger 4；
1 upper end of flap type connects working rig with pressure, and lower end connects injection head；Flap type 1 be used in pressing crack construction conducting or every
From down-hole high pressure area and Operating Pressure machine；
2 lower end of injection head connects fracturing control device 3, has main channel 2-6 and wing passage 2-3；Wherein, wing passage 2-3 connection ground
Face pressure splits pipeline, and main channel 2-6 is the entrance that fracturing fluid enters pressure break oil pipe, main channel 2-6 and wing passage 2-3 connection；
Wellhead flange is connected below fracturing control device 3, specifically includes shell 3-1, has sealing locking flashboard total on shell 3-1
At and positioning suspension flashboard assembly, wherein sealing locking flashboard assembly insulates oil jacket for clamping and locking boll-weevil hanger 4
Annular space；Positioning suspension flashboard assembly is for clamping boll-weevil hanger, when bearing tubing string self gravity, liquid column hydrostatic pressure and pressure break
Liquid high pressure generate load, insulate oil jacket annulus；
Pressure break boll-weevil hanger 4 is for movable tubing string after connecting fracturing string and pressing.
Fig. 2 is the structural schematic diagram of the flap type of the embodiment of the present invention；As shown in Figure 2:
Flap type 1, including valve body 1-4 and valve plate 1-3；The upper and lower end face valve body 1-4 is the connection type of studding connection, top
It is directly connected to Operating Pressure machine, lower section connects pressure break injection head with pressure, pressure-bearing 70MPa, main channel internal diameter φ 180mm, height
About 0.45m；Valve body 1-4 has center flow channels, has valve seat 1-2, valve plate 1-3 and valve seat 1-2 phase interworking in the valve chamber of valve body 1-4
It shares in opening or closing center flow channels, which opens or closes, for well to be connected or be isolated in pressing crack construction
Lower higher-pressure region and Operating Pressure machine；
There is connection cover 1-5 on valve chamber；One end connection guide 1-1 of valve plate 1-3, the effect of guide rod 1-1 are guidance valve plate 1-3 water
Translation is dynamic, helmet 1-0 is arranged on the valve body 1-4 of the guide rod 1-1 other end, helmet 1-0 is for protecting the guide rod stretched out from valve chamber
1-1；The other end of valve plate 1-3 connects driving mechanism.
The driving mechanism, including piston rod 1-10, the other end of piston rod 1-10 is by hydraulic drive, and by hand screw 1-
9 lockings, hand screw 1-9 are driven by handwheel 1-8；Piston rod 1-10 is placed in piston cylinder 1-11, and the both ends of piston cylinder 1-11 are set
It is equipped with gland 1-6；Gland 1-6 is threadedly coupled with connection cover 1-5.
In order to ensure valve chamber is airtight chamber, sealing is set on piston rod 1-10 and guide rod 1-1, and grease pouring valve 1- is arranged
12, lubricating grease is injected to sealing at two by grease pouring valve 1-12,
Flap type 1 closes valve plate 1-3 in pressing crack construction, closes valve plate 1-3 for higher-pressure region and Operating Pressure machine to be isolated, has
The function of protecting working rig with pressure uses at the same time as full shut-in well control flashboard, has well control function.
Fig. 3 is the structural schematic diagram of the injection head of the embodiment of the present invention；As shown in Figure 3:
Injection head 2, including ontology 2-1, the upper end ontology 2-1 are flanged joint, and lower end is studding connection, and top and flap type 1 connect
It connects, lower section connects fracturing control device 3, can pressure-bearing 70MPa, main channel internal diameter φ 180mm, height 0.44m.It is opened on ontology 2-1
There is main channel 2-6 and wing passage 2-3；The center flow channels intercommunication of main channel 2-6 and flap type 1；Main channel 2-6 inner hole lower part is solid
There are the anti-wearing liner 2-4 of hard alloy material, anti-wearing liner 2-4 that can guarantee normal pressure break sand feeding equipment safety surely；In ontology
Four impartial wing passage 2-3 are processed in 2-1 circumferential direction, setting pressure is 70MPa on wing passage 2-3, and internal diameter is φ 78mm, studding
The Flange Plane of connection can be connected by flange-union connector 2-2 with high voltage components such as pressure break pipeline, ball injectors.It does not carry out
When pressing crack construction, wing passage 2-3 is blocked with silk plug.The main channel 2-6 of the injection head 2 is that fracturing fluid enters entering for pressure break oil pipe
Mouthful, there is the critical function of pressure break oil pipe in connection ground fracturing pipeline and well.
Fig. 4 is the structural schematic diagram of the fracturing control device of the embodiment of the present invention；As shown in Figure 4:
Fracturing control device 3, including shell 3-1, the upper end shell 3-1 are flanged joint, and lower end is studding connection, top and injection head
2 connections, lower section connect wellhead flange, pressure-bearing 70MPa, internal diameter 180mm, height 0.74m.Well head four is directly connected in when construction
On logical flange；Connection sealing locking flashboard assembly and positioning suspension flashboard assembly on shell 3-1.
Wherein, sealing locking flashboard assembly, including sealing locking flashboard assembly and the first hydraulic drive mechanism, wherein close
Block determines flashboard assembly for locking boll-weevil hanger 4, including locking flashboard 3-10, lock seal 3-12 and slips body 3-
11；Locking the front end flashboard 3-10 connection lock seal 3-12 and slips body 3-11, lock seal 3-12 is one group of high-performance
Rubber parts, for insulating oil jacket annulus；Slips body 3-11 is two pieces of semi-circular slip dogs, and slips body 3-11 is for clamping oil pipe
Hanger 4, being provided simultaneously with prevents from pushing up and preventing on boll-weevil hanger 4 boll-weevil hanger 4 from rotating two kinds of lock functions.
First hydraulic drive mechanism, including liquid presses piston pole 3-6, hydraulic piston 3-9, hydraulic cylinder 3-8 and hydraulic line connect
Mouth 3-2, liquid presses piston pole 3-6 are connect with the rear end of locking flashboard 3-10；Hydraulic piston 3-9 in hydraulic cylinder 3-8 is in hydraulic tube
Driving liquid presses piston pole 3-6 is moved back and forth under the hydraulic action of line interface 3-2 input, is further driven to locking flashboard 3-10 along shell
The radial of body 3-1 moves back and forth, and boll-weevil hanger 4 and lock seal 3-12 packing are locked or unclamped for slips body 3-11
Oil jacket annulus.
It is preferred that liquid presses piston pole 3-6 is also connected with hand screw 3-7, hand screw 3-7 is used for manual locking hydraulic piston
Bar 3-6, to guarantee construction safety.The outside of hand screw 3-7 has also been bolted gland 3-3.
After planar design has a tapered surface, working condition to close on sealing locking flashboard assembly, boll-weevil hanger 4 is locked,
4 upper surface of boll-weevil hanger is slightly below the flashboard conical surface at this time, this is designed as can smoothly enter into convenient for pressure break steel ball logical inside tubing string
Road.
Positioning suspension flashboard assembly, including positioning suspension flashboard assembly and the second hydraulic drive mechanism, wherein positioning suspension
The liquid when self gravity of the tubing string that flashboard assembly is used to bear to connect with boll-weevil hanger 4, liquid column hydrostatic pressure and pressure break
The load that high pressure generates；
Positioning suspension flashboard assembly, including positioning suspension flashboard 3-5, the positioning hang flashboard 3-5 by two shoe brake board groups into two pieces
It is bolted between flashboard, the front end of positioning suspension flashboard 3-5 connects hangings seals 3-4.
The components composition and connection relationship of second hydraulic drive mechanism and the first hydraulic drive mechanism are identical, and only second
Liquid presses piston pole 3-6 in hydraulic drive mechanism is connect with positioning suspension flashboard 3-5.
The liquid presses piston pole 3-6 in the second hydraulic drive mechanism is also connected with hand screw 3-7 simultaneously, is used for manual locking
Liquid presses piston pole 3-6 in second hydraulic drive mechanism, to guarantee construction safety.
The two upper and lower flashboards closings of positioning suspension flashboard 3-5 and locking flashboard 3-10, clamp boll-weevil hanger 4, have
Isolation oil jacket annulus, the function of locking tubing string, prevent tubing string rotation and upper top, also can be used as well control half and seal flashboard and slip flashboard
It uses.
Fig. 5 is the structural schematic diagram of the boll-weevil hanger of the embodiment of the present invention；In Fig. 5, boll-weevil hanger 4 is integration
Design, is divided into upper, middle and lower segment, and total length 0.7m clamps segment length 120mm, maximum outside diameter φ 120mm.Upper and lower section and pressure
The equal structure of tubing size is split, guarantees that boll-weevil hanger 4 and positioning suspension flashboard 3-5 and locking flashboard 3-10 cooperation are close,
Lower end and interior design tubing round thread, to movable tubing string after connecting fracturing string and pressing；Middle section is gripping section, and cooperation positioning is outstanding
It hangs flashboard assembly and realizes fracturing string suspension.And design has lower end 2 7/8 " UPTBG, inside 2 3/8 " the wear-resisting spraying of TBG() and
Lower end 3 1/2 " UPTBG, inside 2 7/8 " the wear-resisting spraying of TBG() two kinds of specifications.
Specifically, workflow of the present invention is illustrated in conjunction with Fig. 1-Fig. 5:
When well operations preparation of construction to be onstructed, by pressure break combined pressure well head assembly apparatus with pressure according to sequential connection shown in Fig. 1 in well
Between mouth four-way flange and Operating Pressure machine, normal oil pipe tripping operation can be carried out by Operating Pressure machine, at this time due to flat
Plate valve 1 has isolation higher-pressure region and Operating Pressure machine, protects the function of working rig with pressure, can be used as full shut-in well control flashboard and uses,
It can be used as well control device use；
When carrying out the operation of fracturing tubing string, 4 lower thread of boll-weevil hanger is connected on the box cupling of fracturing string the top, and
By connector tripping in boll-weevil hanger gripping section be located at fracturing control device positioning suspension flashboard 3-5 and locking flashboard 3-10 it
Between position；Then by the positioning that the first driving mechanism and the second driving mechanism close fracturing control device hang flashboard 3-5 with
It locks flashboard 3-10 and clamps boll-weevil hanger 4；Then pressure break accessory and pressure break pipeline are connected on the wing passage of injection head 2,
And flap type 1 is closed to protect operating equipment with pressure.Pressing crack construction can be carried out by completing above-mentioned steps.
Carry out operating process in, when fracturing oil pipe to last root, connected pipes hanger 4 in fracturing string most
Fracturing control device 3 is positioned suspension flashboard 3-5 and closes 2/3rds, continued slowly decentralization pressure break oil pipe, observe pressure break pipe by upper end
Column weight indicator suspending weight is decreased obviously, and completely closes positioning suspension flashboard 3-5 at this time, and fracturing string is seated to positioning suspension completely
On flashboard 3-5, locking flashboard 3-10 is simultaneously closed off, pressure break preparation can be carried out after the completion of rountrip.
The silk plug of circumferential four wing passages of injection head is removed, then connects pressure break pipeline, ball injector by the pressure break preparation stage
Equal high voltage components, simultaneously close off flap type 1, cut off the interface channel of Operating Pressure equipment and high-pressure area, protect Operating Pressure
Equipment.
Embodiment described above is only to express embodiments of the present invention, and the description thereof is more specific and detailed, but can not
Therefore limitations on the scope of the patent of the present invention are interpreted as.It should be pointed out that those skilled in the art, In
Under the premise of not departing from present inventive concept, several deformations, same replacement can also be made, improved etc., these belong to the present invention
Protection scope.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of combined pressure wellhead assembly for pressure break with pressure characterized by comprising
Flap type (1), injection head (2), fracturing control device (3) and boll-weevil hanger (4)；
The flap type (1), the upper end connect working rig with pressure, and lower end connects the injection head, for pressing crack construction after
From higher-pressure region and Operating Pressure machine；
The injection head (2), lower end connect the fracturing control device, have main channel (2-6) and wing passage (2-3)；
The main channel (2-6) and the wing passage (2-3) connection；
The wing passage (2-3) connects ground fracturing pipeline；
The main channel (2-6) is the entrance that fracturing fluid enters pressure break oil pipe；
The fracturing control device (3), lower section connect wellhead flange, comprising: shell (3-1)；
There is sealing locking suspension mechanism on the shell (3-1)；
The sealing locks suspension mechanism, for clamping the boll-weevil hanger (4), oil jacket annulus is isolated, bears tubing string itself
The load that liquid high pressure when gravity, liquid column hydrostatic pressure and pressure break generates；
The pressure break boll-weevil hanger (4), for movable tubing string after connecting fracturing string and pressing.
2. a kind of combined pressure wellhead assembly for pressure break with pressure according to claim 1, it is characterised in that:
The flap type (1), comprising: valve body (1-4) and valve plate (1-3)；
The valve body (1-4), top studding connect working rig with pressure, and lower section studding connects injection head (2), and have center stream
Road；There is valve seat (1-2) in the valve chamber of the valve body (1-4), the valve plate (1-3) and the valve seat (1-2) cooperate and use
In opening or closing the center flow channels；
The center flow channels, for down-hole high pressure area and the Operating Pressure machine to be connected or be isolated in pressing crack construction.
3. a kind of combined pressure wellhead assembly for pressure break with pressure according to claim 2, it is characterised in that:
One end connection guide (1-1) of the valve plate (1-3), the other end connect hydraulic drive mechanism；
The guide rod (1-1), for guiding the valve plate (1-3) to move horizontally；
The hydraulic drive mechanism, for driving the valve plate (1-3) to move horizontally.
4. a kind of combined pressure wellhead assembly for pressure break with pressure according to claim 1, it is characterised in that:
The sealing locks suspension mechanism, comprising: sealing locking flashboard assembly and positioning suspension flashboard assembly；
The sealing locks flashboard assembly, for clamping and locking the boll-weevil hanger (4)；
Flashboard assembly is hung in the positioning, for clamping the boll-weevil hanger (4), and bear the tubing string self gravity,
The load that liquid high pressure when liquid column hydrostatic pressure and pressure break generates.
5. a kind of combined pressure wellhead assembly for pressure break with pressure according to claim 4, it is characterised in that:
The sealing locks flashboard assembly, comprising: sealing locking flashboard assembly and the first hydraulic drive mechanism；
The sealing locks flashboard assembly, and for locking the boll-weevil hanger (4), including locking flashboard (3-10), locking are close
Sealing (3-12) and slips body (3-11)；
The locking flashboard front end (3-10) connects the lock seal (3-12) and the slips body (3-11)；
The lock seal (3-12) is rubber material, for oil jacket annulus to be isolated；
The slips body (3-11) is two pieces of semi-circular slip dogs, for clamping and locking the boll-weevil hanger (4).
6. a kind of combined pressure wellhead assembly for pressure break with pressure according to claim 5, it is characterised in that:
First hydraulic drive mechanism, comprising: liquid presses piston pole (3-6), hydraulic piston (3-9), hydraulic cylinder (3-8) and hydraulic
Pipeline interface (3-2)；
The liquid presses piston pole (3-6) connect with the rear end of locking flashboard (3-10)；It is described in the hydraulic cylinder (3-8)
Hydraulic piston (3-9) drives the liquid presses piston pole (3-6) past under the hydraulic action that the hydraulic line interface (3-2) inputs
Multiple movement；
The reciprocating motion, it is described for driving the locking flashboard (3-10) that the slips body (3-11) is driven to clamp and locking
Oil jacket annulus is isolated in boll-weevil hanger (4) and the lock seal (3-12).
7. a kind of combined pressure wellhead assembly for pressure break with pressure according to claim 6, it is characterised in that:
The liquid presses piston pole (3-6) is also connected with hand screw (3-7)；
The hand screw (3-7), for liquid presses piston pole (3-6) described in manual locking.
8. a kind of combined pressure wellhead assembly for pressure break with pressure according to claim 4, it is characterised in that:
Flashboard assembly is hung in the positioning, comprising: positioning suspension flashboard assembly and the second hydraulic drive mechanism；
Flashboard assembly is hung in the positioning, for clamping the boll-weevil hanger (4) and bearing the self gravity, quiet of the tubing string
The load that liquid high pressure when head of liquid and pressure break generates；
Second hydraulic drive mechanism, for driving the positioning suspension flashboard assembly to clamp the boll-weevil hanger (4).
9. a kind of combined pressure wellhead assembly for pressure break with pressure according to claim 8, it is characterised in that:
Flashboard assembly is hung in the positioning, comprising: positioning suspension flashboard (3-5)；
Flashboard (3-5) is hung in the positioning, and front end connects hangings seals (3-4), for clamping the boll-weevil hanger (4)
And the load that liquid high pressure when bearing self gravity, liquid column hydrostatic pressure and the pressure break of the tubing string generates；
The hangings seals (3-4), for insulating oil jacket annulus.
10. -9 described in any item a kind of combined pressure wellhead assemblies for pressure break with pressure according to claim 1, it is characterised in that:
Main channel (2-6) lower part is fixed with anti-wearing liner (2-4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910673116.4A CN110469286A (en) | 2019-07-24 | 2019-07-24 | A kind of combined pressure wellhead assembly for pressure break with pressure |
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| CN201910673116.4A CN110469286A (en) | 2019-07-24 | 2019-07-24 | A kind of combined pressure wellhead assembly for pressure break with pressure |
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| CN110469286A true CN110469286A (en) | 2019-11-19 |
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| CN201910673116.4A Pending CN110469286A (en) | 2019-07-24 | 2019-07-24 | A kind of combined pressure wellhead assembly for pressure break with pressure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115807642A (en) * | 2023-01-29 | 2023-03-17 | 江苏雄越石油机械设备制造有限公司 | Fracturing gas production wellhead with sealing mechanism |
| CN116398078A (en) * | 2023-06-02 | 2023-07-07 | 江苏雄越石油机械设备制造有限公司 | Fracturing well head with high pressure resistant structure |
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| CN106368648A (en) * | 2015-09-08 | 2017-02-01 | 建湖县鸿达阀门管件有限公司 | Intelligent fracturing wellhead device for shale gas exploitation |
| CN108979613A (en) * | 2018-09-04 | 2018-12-11 | 盐城市崇达石化机械有限公司 | A kind of energy conservation combined pressure device for fracturing wellhead |
| CN109854199A (en) * | 2018-11-15 | 2019-06-07 | 中国石油天然气股份有限公司 | Fracturing controller with pressure |
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| CA2482335A1 (en) * | 2003-09-26 | 2005-03-26 | Duhn Oil Tool, Inc. | Wellhead isolation tool and method of fracturing a well |
| CN106368648A (en) * | 2015-09-08 | 2017-02-01 | 建湖县鸿达阀门管件有限公司 | Intelligent fracturing wellhead device for shale gas exploitation |
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| CN115807642A (en) * | 2023-01-29 | 2023-03-17 | 江苏雄越石油机械设备制造有限公司 | Fracturing gas production wellhead with sealing mechanism |
| CN116398078A (en) * | 2023-06-02 | 2023-07-07 | 江苏雄越石油机械设备制造有限公司 | Fracturing well head with high pressure resistant structure |
| CN116398078B (en) * | 2023-06-02 | 2023-10-13 | 江苏雄越石油机械设备制造有限公司 | Fracturing wellhead with high-pressure-resistant structure |
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Effective date of registration: 20211221 Address after: 163453 Heilongjiang Province, Daqing City Ranghulu District No. 233 South Central Avenue Applicant after: Daqing Oilfield Co.,Ltd. Applicant after: PetroChina Company Limited Address before: 163453 Heilongjiang Province, Daqing City Ranghulu District No. 233 South Central Avenue Applicant before: Daqing Oilfield Co.,Ltd. |
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