CN206769859U - It is a kind of that there is the deep water casing cutting device for cutting off display function - Google Patents
It is a kind of that there is the deep water casing cutting device for cutting off display function Download PDFInfo
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- CN206769859U CN206769859U CN201720507125.2U CN201720507125U CN206769859U CN 206769859 U CN206769859 U CN 206769859U CN 201720507125 U CN201720507125 U CN 201720507125U CN 206769859 U CN206769859 U CN 206769859U
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Abstract
The utility model discloses a kind of deep water casing cutting device for having and cutting off display function, including：Valve rod, positioning seat, valve stem spacing regulating part, and the first flexible member.Cutter device provided by the utility model so that valve stem spacing regulating part is after second flow channel fluid injection compression, the first flexible member by limited compression before, valve rod can be declined using upper and lower side pressure difference and fluid impulse force with piston synchronous；And after the first flexible member is by limited compression, valve rod can not continue to decline, and piston then continues to decline under injected fluid pressure, valve rod departs from nozzle, due to now pressure differential collapses above and below valve rod, it is up under the effect of the first flexible member, and the diameter of nozzle flow channel is more than valve rod runner, fluid pressure more than piston upper surface will decline suddenly；And by external pressure-display device, operator can be observed pressure and drastically decline, so as to know that sleeve pipe is cut off information.
Description
Technical field
The utility model is related to deep water drilling operation equipment technical field, more particularly to it is a kind of have cut off display work(
The deep water casing cutting device of energy.
Background technology
The exploitation of oil gas field will typically pass through exploration, Development Engineering construction, production and waste disposal overall process, waste disposal
It is final link therein.According to an international practice and《Offshore oil abandoned well job management rule》, offshore oil and gas field stopping production
After operation, if without other purposes or sensible argument, it is necessary to prepare retired and carry out waste disposal.It is retired to refer to fill in oil
Put from running status and be changed into what is closed, without the activity relevant with hydrocarbon state（Do not include being equipped with other with being moved away from
The activity of pass）.Waste disposal refers to move to petroleum installation finally, and the process for recycling, recycling or depositing on the spot.
In future development, large quantities of well heads is retired to turn into accomplished fact, particularly to the year two thousand twenty, is built before 2002
If all well heads it is nearly all retired, carry out abandoned well operation.In addition, in exploration process, some prospect pits or evaluation well pass through
After exploration and evaluation, if without extraction value, or " dry-well " of no oil gas is drilled out, it is both needed to carry out waste disposal.
Offshore oil and gas field waste disposal is one and is related to all many system engineerings, although the inverse mistake of Development Engineering
Journey, but its aspect being related to is incomplete same with development process, there is its special character.The Demolition Construction of offshore structures can return
Become separation（Mainly use cutting technique）, lifting, transport, disembarkation processing or marine reverse four parts.Wherein, machine cuts are
In separation process compared with frequently with technology, it is different from cumulative charge, and cumulative charge is by factors such as environment and technologies
Influence, using limited larger, machine cuts then limit without this.
In the prior art, imderwater cutting cutter device（Referred to machine cuts, hereinafter referred to as cutter device）Generally bag
Include：Cutter bod, cutting blade, bearing pin, piston component, spring, nozzle and the extension bar set gradually from the bottom to top, wherein, extension bar and
Piston component is respectively arranged with first flow and second flow channel, and nozzle is arranged between first flow and second flow channel, outside extension bar
Connect liquid supply equipment.When cutter device need to go into the well cutting, first with binding pieces such as adhesive tape or ropes by cutting blade colligation in cutting
In cutter hub；Secondly cutter device is transferred to cleavage；Again, added by first flow and second flow channel to piston component transfusion
Pressure, until piston component moves down, piston lower surface promotes blade upper end descending, start blade and open；Finally, rotary cutting knife piece
Casing-Cutting.
Prior art cutter device is disadvantageous in that：In cutting process, it can not learn when sleeve pipe cuts off, so as to make
Into after casing severing, cutter device continues to run with, and loses time and drilling platforms equipment runs resource, add and cut into
This.
Therefore, prior art has yet to be improved and developed.
Utility model content
The technical problems to be solved in the utility model is, for the drawbacks described above of prior art, there is provided one kind, which has, cuts
The deep water casing cutting device of disconnected display function, it is intended to which when solution in cutting process, can not learn sleeve pipe in the prior art
Cut off, so as to cause after casing severing, cutter device continues to run with, and loses time and drilling platforms equipment runs resource,
The problem of improving cutting cost.
Technical scheme is as follows used by the utility model solves technical problem：
It is a kind of have cut off the deep water casing cutting device of display function, including：Extension bar, the cutter for being connected to extension bar lower end
Body, and multiple one end are rotatably connected in the cutting blade of cutter bod, and the extension bar is provided with first flow, the cutter bod upper end and
Lower end is respectively arranged with the second flow channel and third flow channel communicated with first flow, wherein, it is described have cut off display function
Deep water casing cutting device is circumscribed with pressure-display device, and it also includes：
Piston, nozzle and the valve rod being set in turn in from the bottom to top in second flow channel, the piston is in second flow channel fluid injection
It is pressurized and moves down afterwards, overhanging to promote cutting blade to rotate around cutter bod, its outer fringe seal is in cutter bod inwall, and middle part is then along axle
Heart direction is provided through a piston runner；The nozzle is fixedly connected on piston, and its middle part is provided through one and piston
The nozzle flow channel that runner communicates, one is provided through in the middle part of the valve rod and is communicated with nozzle flow channel and diameter is less than nozzle flow channel
Valve rod runner；
The valve rod outer rim is arranged with positioning seat, the first flexible member and valve stem spacing regulating part, institute successively from the bottom to top
State positioning seat to be fixedly installed in the middle part of second flow channel, be provided with the symmetrical liquid flow hole in several axle center；The valve stem spacing is adjusted
Section part is connected to valve rod upper end, and its band ovable valve stem that is pressurized after second flow channel fluid injection declines, while compresses the first flexible member,
Before it reaches limit inferior position, valve rod is brought into close contact with nozzle, comes from the liquid of valve rod runner to ensure that nozzle flow channel only receives
Body, after it reaches limit inferior position, valve rod departs from nozzle so that and nozzle flow channel can receive the liquid for coming from liquid flow hole,
To carry out pressure release.
In preferred scheme, described has the deep water casing cutting device for cutting off display function, wherein, the valve stem spacing
Regulating part is stop nut, and the stop nut is adjustable to be connected to valve rod, to adjust the disengaging configuration of valve rod and nozzle, so as to
Carry out the casing-pipe cutting work of different size.
In preferred scheme, described has the deep water casing cutting device for cutting off display function, wherein, the valve rod bag
Include：
Sequentially pass through the sliding part of positioning seat, the first flexible member and screw limiting regulating part, and with the sliding part
It is integrally formed, in hemispherical, for being bonded the sticking part of nozzle, the cross section of the nozzle sticking part is more than the transversal of sliding part
Face.
In preferred scheme, described has the deep water casing cutting device for cutting off display function, wherein, the valve rod upper end
And valve stem spacing regulating part is contained in first flow after extension bar is connected with cutter bod.
It is described that there is the deep water casing cutting device for cutting off display function in preferred scheme, wherein, it is described have cut off
The deep water casing cutting device of display function also includes：
The flow nipple being sheathed at the top of valve rod outer rim, the flow nipple are located in first flow, and in its outer rim and extension bar
A liquid stream gap is provided between wall；
In the middle part of the flow nipple flow nipple runner, the flow nipple runner and valve rod runner phase are offered along axis direction
Logical, the change of magnitude of pressure differential can be adjusted by changing flow nipple.
In preferred scheme, described has the deep water casing cutting device for cutting off display function, wherein, the second flow channel
A bushing is inside provided with, the bushing is located at piston outer rim, and its upper surface is bonded with positioning seat lower surface；
The piston outer rim offers one to several support slot, and has sealing ring by the support slot clamping, described close
Support slot is fastened on the inside of seal, outside fits in the bushing.
In preferred scheme, described has the deep water casing cutting device for cutting off display function, wherein, the piston upper end
A nozzle holding tank is provided with, the nozzle includes：The Piston connecting portion of the nozzle holding tank is contained in, and is exposed to work
Square valve rod sticking part beyond the Great Wall；
A packing ring is provided between the piston upper surface and the valve rod sticking part lower surface.
In preferred scheme, described has the deep water casing cutting device for cutting off display function, wherein, below the piston
A contracting knife slide is provided with, the contracting knife slide is movably arranged in third flow channel, and it is used to rise after casing severing, pushed away
Dynamic cutting blade is shunk back in cutter bod；
The contracting knife slide outer rim is arranged with one second flexible member, and second flexible member is when contracting knife slide declines
Compressed, and resetted after piston is no longer pressurized, promote contracting knife slide to rise.
In preferred scheme, described has the deep water casing cutting device for cutting off display function, wherein, in cutting blade outside
Portion is vertically arranged with a chip area, and an alloy cutting edge is respectively arranged with the left of chip area and on the lateral surface on right side.
In preferred scheme, described has the deep water casing cutting device for cutting off display function, wherein, the cutting blade is set
Four are equipped with, four cutting blades are arranged at intervals at cutter bod outer rim.
It is provided by the utility model have cut off the deep water casing cutting device of display function, as a result of being provided with
Diameter is less than the valve rod of the valve rod runner of nozzle flow channel, is sheathed on valve rod outer rim and the positioning seat being fixed in second flow channel, even
The valve stem spacing regulating part of valve rod upper end is connected to, and the first flexible member being arranged between positioning seat and valve rod so that valve rod
Spacing regulating part second flow channel fluid injection compression after, the first flexible member by limited compression before, valve rod can with piston synchronous
Drop, ensure that valve rod can be brought into close contact with nozzle, and now, the 3rd stream can only can just be flow to by valve rod runner by injecting liquid
Road；And after the first flexible member is by limited compression, valve rod can not continue to decline, and piston is then under injected fluid pressure
Continue to decline, valve rod departs from nozzle, and now, cutting blade blade reaches specified location under the promotion of piston, has cut off set
Pipe, and valve rod runner is also no longer the necessary channel that injected liquid flow to third flow channel, because the diameter of nozzle flow channel is more than
Valve rod runner, fluid pressure more than piston upper surface will decline suddenly；It is and considerable by external pressure-display device, operator
Observe pressure drastically to decline, so as to know that sleeve pipe is cut off.Efficiently solve in the prior art in deep water cutting process,
It can not learn when sleeve pipe cuts off, so as to cause after casing severing, cutter device continues to run with, and loses time and drilling well is put down
Platform equipment runs resource, the problem of adding cutting cost.
Brief description of the drawings
Fig. 1 is that the utility model is new, and there is the deep water casing cutting device cutting blade for cutting off display function to be flared to the limit
The profile of preferred embodiment during position.
Local A enlarged drawing in Fig. 2 the utility model Fig. 1.
Fig. 3 is that the utility model is new, and there is the deep water casing cutting device cutting blade for cutting off display function to be retracted to cutter
The profile of preferred embodiment during body.
Fig. 4 is the efficient deep water abandoned well hydraulic cutter device cutting edge position view of the utility model major diameter.
Embodiment
To make the purpose of this utility model, technical scheme and advantage clearer, clear and definite, develop simultaneously implementation referring to the drawings
The utility model is further described example.It should be appreciated that specific embodiment described herein is only explaining this reality
With new, it is not used to limit the utility model.
There is the deep water casing cutting device for cutting off display function to be connected to drilling platforms in the utility model, belong to deep water
Underwater operation instrument, it is larger with common cutter device difference, so it is easy to understand that because it need to be operated in deep water, nothing
The common cutting equipment of the image of Buddha is the same, the progress of observable cutting at any time, brings no small difficulty to casing-pipe cutting, also increases pole
Big cost.
It is understood that drilling platforms use cost is high, such as 981 drilling platforms, it sends out equipped with 8 4.4 ten thousand kilowatts of diesel oil
Motor, needed for generated energy a close to medium-sized city, tender is needed to convey diesel oil, fresh water, daily necessities and various consumptions weekly
Material etc..According to statistics, 981 drilling platforms averagely consume 30 tons of diesel oil daily, reach as high as 60 to 70 tons, nearly 40 tons of fresh water, add
180 personnel and other consumption, along with daily rental fee more than 300 ten thousand, day rate convert into the RMB of 400-500 ten thousand（Off position
Under）, and the consumption under working condition is undoubtedly higher.It can be said that the insignificant stop of per a moment of drilling platforms will all make
Into the waste of huge amounts of material.In the prior art, because in the past old-fashioned common waterpower cutter device can not effectively know casing severing
Time, it is inevitable to cause the operation resource of drilling platforms and the waste of residence time, therefore, is provided by the utility model
Technical scheme solve the problem, so as to save the consumption of drilling platforms, there is earthshaking meaning.
Fig. 1 to Fig. 3 is referred to, the utility model preferred embodiment provides a kind of with the deep water set for cutting off display function
Pipe cutter device（Abbreviation cutter device）, a pressure-display device is circumscribed with, the pressure-display device is arranged at drilling platforms
On, the fluid pressure change in second flow channel can be shown, the measurement of fluid pressure and is shown as prior art, it is no longer superfluous herein
State.The utility model, which focuses on the structure with the deep water casing cutting device for cutting off display function, to be improved, and its setting is as follows：
Including extension bar 1, insertion is connected to the cutter bod 2 of the lower end of extension bar 1, and extension bar 1 is provided with a use along axis direction
Make the first flow of cutter device start-up operation in fluid injection pressurization, the upper end of cutter bod 2 and lower end are then set respectively along axis direction
There are a second flow channel and third flow channel, the liquid injected by first flow successively flows through second flow channel and third flow channel, needs
It is noted that be provided between the second flow channel and third flow channel it is multiple substantially be in undercut font cutting blade loose slot, cut
Blade 9 is completely accommodated in cutting blade loose slot when non-fluid injection is pressurizeed, and after fluid injection pressurization, then under the promotion of piston 6,
One end rotation, the other end close to piston 6 is overhanging.
In the utility model preferred embodiment, the second flow channel includes：The extension bar from top to bottom set gradually connects
Socket part and positioning seat fixed part；The cross section of the extension bar connecting portion is in wide at the top and narrow at the bottom trapezoidal；The positioning seat fixed part is in
Cylindrical type, its lower end are provided with a bushing 3, and the bushing 3 is located at the outer rim of piston 6, and its upper surface and the lower surface of positioning seat 11
Fitting；And the outer rim of piston 6 then offers one to several support slot, and there is a sealing ring 7 by the support slot clamping, it is described close
The inner side of seal 7 is fastened in support slot, and outside is brought into close contact in the bushing 3.
The shape adaptation of extension bar connecting portion is to ensure the connective stability of the two in the lower end of extension bar 1.
The upper end of extension bar 1 can jointed rod, this is prior art, and the utility model is no longer repeated it herein.
The utility model difference from prior art is that prior art is pressurizeed by fluid injection and directly drives piston component
Decline, realize that the rotation of cutting blade 9 is overhanging, its internal liquid pressure value is fixed.The utility model is then by being arranged at
Piston 6, nozzle 4 and valve rod 10, positioning seat 11, the first flexible member 13 and valve stem spacing regulating part 14 in two runners so that
Cutter device can be brought into close contact and depart from two states by nozzle 4 and valve rod 10, realize pressure suddenly change, so as to pass through pressure
Power changes, and knows that cutting edge has reached predeterminated position, and sleeve pipe is also cut off.
As shown in figure 4, in the utility model, a cutting blade 9, each cutting blade are provided with each cutting blade loose slot
9 are all provided with the first alloy cutting edge 19 on the lateral surface in the left side of chip area 18, and on the lateral surface on the right side of chip area 18
It is provided with the second alloy cutting edge 20；Or the second alloy cutting edge 20 is provided with the lateral surface in the left side of chip area 18, and
The first alloy cutting edge 19 is provided with the lateral surface on the right side of chip area 18, particular location refer to Fig. 4, the first alloy cutting edge
19 and second alloy cutting edge 20 set location should be advantageous for exclude sleeve pipe bits.
First alloy cutting edge 19 and the second alloy cutting edge 20 are arranged on the left side of chip area 18 or right side, to depend on
When being cut, the direction of rotation of cutter bod 2, if that is, cutter bod 2 turns clockwise, the second alloy cutting edge 20 is fixed on
The right side of cutting blade 9, and right side is concordant with the right flank of cutting blade 9, is otherwise unfavorable for Casing-Cutting, can not also be discharged by chip area
Sleeve pipe is considered to be worth doing；And the first alloy cutting edge 19 is then fixed on the left side of chip area 18, so, during chip sleeve pipe could by set up separately two
Individual cutting edge priority Casing-Cutting, accelerate cutting efficiency；During 2 rotate counterclockwise of cutter bod, principle is identical, repeats no more.
Except chip area 18 setting and cutting edge quantity unlike the prior art in addition to, the quantity of cutting blade 9 also with it is existing
Technology is different.The quantity of cutting blade 9 of prior art is provided only with three, and the utility model is then provided with four, and this is not only
The different change of quantity, it also solves the problem of cutting blade 9 easily rocks in the prior art.Three cutting blade in the prior art
9 when being cut, and because its stress is asymmetric, cutting blade 9 can be caused to rock（Such as, one of cutting blade 9 touches obstacle
During thing, it is rocked by resistance, and due to being supported on internal surface of sleeve pipe without symmetrically arranged cutting blade 9 so it can be produced）, and
Cutting blade 9 is changed to four by the utility model, the symmetrically arranged stress equalization of cutting blade 9, it is higher to cut stability.
That is, the utility model is not merely to improve the setting quantity that cutting efficiency just changes cutting blade 9,
Importantly, which raises the stability during work of cutting blade 9, certainly, due to the increase of the quantity of cutting blade 9, coordinate each
Cutting blade 9 can all be connected two cutting edges so that the cutting edge quantity of cutter device by three changes of script for eight, pole
The big chip efficiency that improves is also one of emphasis improvement of the present utility model.
It is preferred that the cutting blade 9 is rotatably connected in cutter bod 2 by bearing pin 16, and the lateral surface of cutting blade 9 is to deviate to cut
The side of cutter hub 2 is welded with broken alloy 17.
In the utility model preferred embodiment, piston 6, nozzle 4 and valve rod 10 are set in turn in second from the bottom to top
In road, positioning seat 11, the first flexible member 13 and valve stem spacing regulating part 14 are then sheathed on the outer rim of valve rod 10 successively from the bottom to top.
The piston 6 can move up and down in second flow channel, and its power comes from the pressure that injected liquid is brought, piston
The 6 extended second flow channel in lower end, it is overhanging so as to promote cutting blade 9 to start to rotate into cutting blade loose slot.The piston 6
Outer rim should be sealed in the inwall of cutter bod 2, prevent gap between piston 6 and cutter bod 2 being present, on the one hand ensure that fluid pressure is enough
Piston 6 is promoted to decline；On the other hand, liquid leakage is prevented, pressure-display device shows that pressure declines, causes operator to judge by accident.
When specifically used, piston 6 is sealed in the inwall of cutter bod 2 by external sealing ring 7, and the inner side of sealing ring 7 fits in piston 6,
Outside fits in the inwall of cutter bod 2；The piston 6 offers a support slot for being used for clamping sealing ring 7.The sealing ring 7 is set
One or more is equipped with, its longitudinal section is in inverted Y-shaped, will not be due to the frictional force between bushing 3 while to ensure sealing
It is excessive and cause that piston 6 can not decline or decrease speed is limited, so that influenceing casing-pipe cutting efficiency.
When it is implemented, being provided with a bushing 3 in the second flow channel, the replacing being easy to after abrasion, the bushing 3 is located at
The outer rim of piston 6, and its upper surface is bonded with the lower surface of positioning seat 11；The outer rim of piston 6 offers a support slot, and passes through institute
Stating support slot clamping has a sealing ring 7, and the inner side of sealing ring 7 is fastened in support slot, and outside fits in the bushing 3.
The upper end of piston 6 is provided with a nozzle holding tank, and the nozzle 4 includes：It is contained in the nozzle holding tank
Piston connecting portion, and it is exposed to the valve rod sticking part of the top of piston 6；Under the upper surface of piston 6 and the valve rod sticking part
A packing ring 5 is provided between end face.
It is preferred that the nozzle 4 is threadedly connected to piston 6, while being fixedly connected so as to the two, conveniently safeguarded or more
Change, the nozzle 4 is provided with nozzle flow channel, and nozzle flow channel is the necessary channel that liquid flows to third flow channel in second flow channel.
Nozzle 4 and the structure of nozzle 4 of the prior art and differed in the utility model, in the prior art the nozzle set by nozzle 4
Runner is in funnel type, and nozzle flow channel is arranged to cylindrical type in the utility model, has a diameter larger than the diameter of valve rod runner, the setting
Precisely in order to it is front and rear to realize that nozzle 4 and valve rod 10 depart from, the change of fluid pressure and set.It can be seen that the spray in the utility model
Mouth 4 differs with the structure of nozzle 4 of the prior art and effect.
The valve rod 10 is provided with valve rod runner, and it declines under the drive of valve stem spacing regulating part 14, is limited in valve rod
Before position regulating part 14 reaches limit inferior position, valve rod 10 is bonded with nozzle 4, and now, valve rod runner is liquid flow in second flow channel
Move to the necessary channel of third flow channel, and the upper surface of piston 6 and the inwall of cutter bod 2 will be formed one can only enter to go out it is semiclosed
Accommodating chamber；And after valve stem spacing regulating part 14 reaches limit inferior position, valve rod 10 departs from nozzle 4, and valve rod runner will no longer
The necessary channel of third flow channel is flowed to as liquid in second flow channel, and flow to the upper surface of piston 6 and the inwall of cutter bod 2 it
Between liquid third flow channel can be flow to by nozzle flow channel, when being bonded relative to valve rod 10 with nozzle 4, the upper end surface of piston 6
Fluid pressure decline, shown by external pressure-display device.
When it is implemented, the valve rod 10 may be configured as torus, i.e. the cross section of valve rod 10 is in annular, with nozzle 4
During fitting, the upper end end face of nozzle 4 is bonded by the lower end surface of valve rod 10.But in order to which that improves valve rod 10 and nozzle 4 is bonded compactness,
More preferably scheme is that the lower end of valve rod 10 and upper end of nozzle are arranged into convex-concave sphere, it is to be understood that after the fitting of convex-concave sphere
Sealing and centering be significantly larger than the fitting effects of two planes；The concrete structure of valve rod 10 may include：It is fixed to sequentially pass through
Position seat 11, the sliding part of the first flexible member 13 and screw limiting part, and be integrally formed with the sliding part, in hemispherical,
For being bonded the nozzle sticking part of nozzle 4, the cross section of the nozzle sticking part is more than the cross section of sliding part.
The using effect of nozzle sticking part prevents on the one hand as described above, that improves valve rod 10 and nozzle 4 is bonded compactness
The liquid of nozzle flow channel is flowed to outward leakage by valve rod runner；On the other hand, then realized by its cross section, because its cross section is big
In the cross section of sliding part, so in second flow channel after fluid injection pressure, the part that nozzle sticking part protrudes from sliding part will be by
The fluid pressure extra to one, promotes it to move down, and the setting can improve synchronism when valve rod 10 declines with nozzle 4.
It is clear that one is used for connecting screw locating part, the two is used for for the first elasticity member for the effect of the sliding part
The compression of part 13 is oriented to, and three is used for the drive in screw limiting part, and under the guiding of positioning seat 11, along axis direction to moving down
It is dynamic.
The positioning seat 11 has two effects, one be used to valve rod 10 move up and down guiding and spacing, second, can lead to
The liquid flow hole being arranged on is crossed, fluid injection to the upper surface of piston 6, forms the pressure for promoting piston 6 to move down.Positioning seat 11 is fixed on
In the middle part of second flow channel, its axis direction is provided through one and is arranged the pilot hole for adapting to valve rod 10.When it is implemented, liquid flow hole
Two or four is may be configured as, should at least set two, ensures liquid flow velocity and the stress equalization of piston 6, is preferably arranged to
Four, so that the upper surface stress equalization of piston 6.
For the valve stem spacing regulating part 14 during with a casing-pipe cutting, the relative position with valve rod 10 is fixed
, preferable scheme, which is that valve stem spacing regulating part 14 is adjustable, is connected to valve rod 10, to adjust the disengaging of valve rod 10 and nozzle 4
Position, so as to carry out the work of the casing-pipe cutting of different size；When it is implemented, valve stem spacing regulating part 14 can be arranged to spacing
Nut, not only position adjustments are convenient, and higher with the connection reliability of valve rod 10.The quantity of stop nut is preferably arranged to two
Individual, for two stop nuts for a stop nut, interlocking capability is relatively good, under deepwater environment, two stop nuts
Mutually position will not change after locking, set two stop nuts to improve the spacing reliability with valve rod 10.
And the outer rim of valve rod 10, the lower section of the first flexible member 13, the upper surface of positioning seat 11 is additionally provided with a spring guide
12。
It is described that there is the deep water casing cutting dress for cutting off display function in the utility model further preferred embodiment
Putting also includes：
The flow nipple 15 being sheathed at the top of the outer rim of valve rod 10, the flow nipple 15 are located in first flow, and its outer rim with
A liquid stream gap is provided between the inwall of extension bar 1；The middle part of flow nipple 15 offers a flow nipple runner, institute along axis direction
State flow nipple runner to communicate with valve rod runner, and its diameter is less than valve rod runner.
In the utility model further preferred embodiment, the lower section of piston 6 is provided with a contracting knife slide, the contracting
Knife slide is movably arranged in third flow channel, and it is used to rise after casing severing, promotes cutting blade 9 to shrink back cutter bod 2
It is interior；The contracting knife slide outer rim is arranged with one second flexible member, and second flexible member is pressed when contracting knife slide declines
Contracting, and resetted after piston 6 is no longer pressurized, promote contracting knife slide to rise.
Due to the presence of contracting knife slide and the second flexible member, before non-fluid injection pressurization, cutting blade 9 be can not rotate it is overhanging
's；And after fluid injection pressurization, before cutting completion, cutting blade 9 also can only gradually rotate overhanging；After the completion of cutter work, contracting knife
Slide will promote cutting blade 9 to reset, and no longer only rely on the deadweight of cutting blade 9 and shrink.Therefore, the utility model also solves existing
Cutter device is dropped to before sleeve pipe in technology, and the binding piece of cutting blade 9 easily collapses out, so as to lead to not sleeve pipe；Carry out
When infusion pressurization struts cutting blade 9, cutting blade 9 is open configuration by being tied state suddenly change, produces and touches with internal surface of sleeve pipe
Hit, damage cutting edge, extend clipping time, reduce cutting efficiency；And after the completion of cutting, cutting blade 9 is received by deadweight
It is reduced to during cutter bod 2, has sleeve pipe scrap because containing in buoyant of sea water or cutter bod 2, cutter bod 2 can not often be completed to withdraw
The problem of withdrawing.
After cutter device transfers to specified location, seawater is passed through（Drilling fluid also may be used）, when just starting, a part of seawater from
Runner of the runner of extension bar 1 through flow nipple 15, valve rod 10, nozzle 4, piston 6 flows downward, and another part seawater flows through positioning seat 11
On 4 liquid flow holes act on piston, after seawater is full of in the runner of nozzle 4 and piston 6, all seawater are through the He of valve rod 10
Aperture on nozzle 4 flows away downwards.According to Hydrodynamics Theory, due to the setting of nozzle flow channel, seawater produces pressure at nozzle 4
Drop；Valve rod 10 is longer, and seawater can be produced along stroke pressure when flowing through valve rod 10 and lost；When seawater enters nozzle 4 by valve rod 10, stream
Road caliber becomes big suddenly, can produce local pressure loss.The fluid pressure as caused by this three parts pressure drop promotes valve rod 10 with living
Plug 6 is synchronous to be declined, and the lower surface of piston 6 promotes the end of cutting blade 9 descending, due to passing through bearing pin between blade and hydraulic cutter housing
8 connect, then blade opens, Casing-Cutting.
And judge whether cutting is completed to rely on：When the cut is completed, the compression spring 13 of valve stem spacing regulating part 14 is to necessarily
Distance, now valve rod 10 is no longer moved down due to the limitation of locating part 14, and piston 6 continues to move down, and causes valve rod 10
Lower end sphere separates with piston 6 and nozzle 4；After separating, the upper and lower side pressure differential collapses of valve rod 10, and valve rod 10 can recover in spring
It is up in the presence of power.It can be seen from Hydrodynamics Theory, fluid can produce pressure drop at nozzle 4, and this caused pressure drop is bright
The aobvious pressure drop being less than in hydraulic cutter normal operation, therefore may determine that and cut by the significant changes of logging presentation pressure drop on platform
Cut and whether complete.
It should be appreciated that application of the present utility model is not limited to above-mentioned citing, those of ordinary skill in the art are come
Say, can according to the above description be improved or converted, all these modifications and variations should all belong to the appended power of the utility model
The protection domain that profit requires.
Claims (10)
1. it is a kind of with the deep water casing cutting device for cutting off display function, including：Extension bar, the cutter for being connected to extension bar lower end
Body, and multiple one end are rotatably connected in the cutting blade of cutter bod, and the extension bar is provided with first flow, the cutter bod upper end and
Lower end is respectively arranged with the second flow channel and third flow channel communicated with first flow, it is characterised in that it is described have cut off display
The deep water casing cutting device of function is circumscribed with pressure-display device, and it also includes：
Piston, nozzle and the valve rod being set in turn in from the bottom to top in second flow channel, the piston after second flow channel fluid injection by
Pressure moves down, and overhanging to promote cutting blade to rotate around cutter bod, its outer fringe seal is in cutter bod inwall, and middle part is then along axle center side
To being provided through a piston runner；The nozzle is fixedly connected on piston, and its middle part is provided through one and piston runner
The nozzle flow channel communicated, be provided through in the middle part of the valve rod one communicated with nozzle flow channel and diameter less than nozzle flow channel valve
Bar runner；
The valve rod outer rim is arranged with positioning seat, the first flexible member and valve stem spacing regulating part successively from the bottom to top, described fixed
Position seat is fixedly installed in the middle part of second flow channel, is provided with the symmetrical liquid flow hole in several axle center；The valve stem spacing regulating part
Valve rod upper end is connected to, its band ovable valve stem that is pressurized after second flow channel fluid injection declines, while compresses the first flexible member, is reached at it
To before limit inferior position, valve rod is brought into close contact with nozzle, comes from the liquid of valve rod runner to ensure that nozzle flow channel only receives,
After it reaches limit inferior position, valve rod departs from nozzle so that nozzle flow channel can receive the liquid for coming from liquid flow hole, to carry out
Pressure release.
2. according to claim 1 have the deep water casing cutting device for cutting off display function, it is characterised in that the valve
The spacing regulating part of bar is stop nut, and the stop nut is adjustable to be connected to valve rod, to adjust the disengaging position of valve rod and nozzle
Put, so as to carry out the work of the casing-pipe cutting of different size.
3. according to claim 1 have the deep water casing cutting device for cutting off display function, it is characterised in that the valve
Bar includes：
The sliding part of positioning seat, the first flexible member and screw limiting regulating part is sequentially passed through, and it is integral with the sliding part
Shaping, in hemispherical, for being bonded the sticking part of nozzle, the cross section of the nozzle sticking part is more than the cross section of sliding part.
4. according to claim 1 have the deep water casing cutting device for cutting off display function, it is characterised in that the valve
Bar upper end and valve stem spacing regulating part are contained in first flow after extension bar is connected with cutter bod.
5. according to claim 4 have the deep water casing cutting device for cutting off display function, it is characterised in that the tool
There is the deep water casing cutting device for cutting off display function also to include：
The flow nipple being sheathed at the top of valve rod outer rim, the flow nipple are located in first flow, and its outer rim and extension bar inwall it
Between be provided with a liquid stream gap；
A flow nipple runner is offered along axis direction in the middle part of the flow nipple, the flow nipple runner communicates with valve rod runner,
The change of magnitude of pressure differential can be adjusted by changing flow nipple.
6. it is according to claim 1 have cut off the deep water casing cutting device of display function, it is characterised in that described the
A bushing is provided with two runners, the bushing is located at piston outer rim, and its upper surface is bonded with positioning seat lower surface；
The piston outer rim offers one to several support slot, and has sealing ring, the sealing ring by the support slot clamping
Inner side is fastened in support slot, and outside fits in the bushing.
7. according to claim 6 have the deep water casing cutting device for cutting off display function, it is characterised in that the work
End is provided with a nozzle holding tank beyond the Great Wall, and the nozzle includes：The Piston connecting portion of the nozzle holding tank is contained in, and it is naked
The valve rod sticking part being exposed to above piston；
A packing ring is provided between the piston upper surface and the valve rod sticking part lower surface.
8. according to any one of claim 1 to 7 have the deep water casing cutting device for cutting off display function, its feature
It is, is provided with a contracting knife slide below the piston, the contracting knife slide is movably arranged in third flow channel, and it is used for
Rise after casing severing, promote cutting blade to shrink back in cutter bod；
The contracting knife slide outer rim is arranged with one second flexible member, and second flexible member is pressed when contracting knife slide declines
Contracting, and resetted after piston is no longer pressurized, promote contracting knife slide to rise.
9. according to any one of claim 1 to 7 have the deep water casing cutting device for cutting off display function, its feature
It is, the outer middle side part of cutting blade is vertically arranged with a chip area, and is set respectively on the left of chip area and on the lateral surface on right side
There is an alloy cutting edge.
10. according to claim 9 have the deep water casing cutting device for cutting off display function, it is characterised in that described
Cutting blade is provided with four, and four cutting blades are arranged at intervals at cutter bod outer rim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720507125.2U CN206769859U (en) | 2017-05-09 | 2017-05-09 | It is a kind of that there is the deep water casing cutting device for cutting off display function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720507125.2U CN206769859U (en) | 2017-05-09 | 2017-05-09 | It is a kind of that there is the deep water casing cutting device for cutting off display function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206769859U true CN206769859U (en) | 2017-12-19 |
Family
ID=60648772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720507125.2U Active CN206769859U (en) | 2017-05-09 | 2017-05-09 | It is a kind of that there is the deep water casing cutting device for cutting off display function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206769859U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107701137A (en) * | 2017-05-09 | 2018-02-16 | 深圳市远东石油钻采工程有限公司 | A kind of pressure difference changes limit-type deep water casing-pipe cutting hydraulic cutter device greatly |
| CN115711099A (en) * | 2021-08-23 | 2023-02-24 | 中国石油天然气集团有限公司 | Vertical feed type hydraulic oil pipe internal cutting knife |
-
2017
- 2017-05-09 CN CN201720507125.2U patent/CN206769859U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107701137A (en) * | 2017-05-09 | 2018-02-16 | 深圳市远东石油钻采工程有限公司 | A kind of pressure difference changes limit-type deep water casing-pipe cutting hydraulic cutter device greatly |
| CN115711099A (en) * | 2021-08-23 | 2023-02-24 | 中国石油天然气集团有限公司 | Vertical feed type hydraulic oil pipe internal cutting knife |
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