CN108590604A - It is a kind of to set structure without the afflux of bridge eccentric injection mandrel for the small flow in oil field - Google Patents
It is a kind of to set structure without the afflux of bridge eccentric injection mandrel for the small flow in oil field Download PDFInfo
- Publication number
- CN108590604A CN108590604A CN201810500600.2A CN201810500600A CN108590604A CN 108590604 A CN108590604 A CN 108590604A CN 201810500600 A CN201810500600 A CN 201810500600A CN 108590604 A CN108590604 A CN 108590604A
- Authority
- CN
- China
- Prior art keywords
- afflux
- casing cylinder
- wall
- skin
- muffetee
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/126—Packers; Plugs with fluid-pressure-operated elastic cup or skirt
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
Abstract
The invention discloses a kind of structure being set without the afflux of bridge eccentric injection mandrel for the small flow in oil field, include for the testing seal section with bridge eccentric injection mandrel, the top of the testing seal section is equipped with water inlet, bottom is equipped with water outlet, the fluid course for being internally provided with connection water inlet and water outlet of testing seal section.The present invention's sets structure, by the way that runner is arranged inside it in the structure of existing testing seal section so that without bridge eccentric injection mandrel after being set, ensure that the smooth dirty without getting lodged at testing seal section of liquid stream.
Description
Technical field
The present invention relates to one kind setting structure, and in particular to a kind of to be used for collection of the small flow in oil field without bridge eccentric injection mandrel
Stream sets structure.
Background technology
It is passed through in oil field operation frequently with the eccentric injection mandrel without bridge, when being measured for the small flow of oil well note, because
Flow channel for liquids is too slow, and ultrasonic wave and eddy current type can not all measure under the very slow mobility status of flow stream velocity, so usually adopting
With the afflux flowmeter for being integrated with electromagnetic flowmeter and afflux structure, but application is found again in actual production, and collection flow measurement needs
Make the liquid stream of injection injection well downhole flow regulator central lumen pipeline all by afflux flowmeter, it is therefore desirable to be carried out to central lumen pipeline
It sets, the existing testing seal section for bridge type eccentric injection mandrel, since bridge type eccentric injection mandrel is tested in intracavity pipeline
Seal section also has the bridge ducts for being used for water in the case of blocking, therefore will not cause liquid stream that can not circulate；But it is eccentric
Only there is intracavity pipeline without the injection well downhole flow regulator of bridge, if using the existing testing seal section for bridge type eccentric injection mandrel to inclined
When the heart is set without the injection well downhole flow regulator of bridge, since unique intracavity pipeline is blocked, then cause the liquid stream after injection afflux stifled
It in the position set, and flows downward without other channels, liquid can not be injected by, which causing, causes down-hole pressure to increase, and well head liquid overflows
Go out, causes to be unable to measure.
Invention content
The technical problem to be solved by the present invention is to the existing test sealings for bridge type eccentric injection mandrel collection flow measurement
Section, is not suitable for the small flow set flow measurement of the eccentric injection mandrel without bridge, and the case where leading to not inject liquid, purpose exists
In provide it is a kind of setting structure without the afflux of bridge eccentric injection mandrel for the small flow in oil field, on the basis of existing testing seal section
It is upper by the way that runner is arranged inside it so that without bridge eccentric injection mandrel after being set, ensure that the smooth dirty of liquid stream
Without getting lodged at testing seal section.
The present invention is achieved through the following technical solutions：
It is a kind of to set structure without the afflux of bridge eccentric injection mandrel for the small flow in oil field, including it is used for band bridge eccentric center water-distributing
The top of the testing seal section of device, the testing seal section is equipped with water inlet, and bottom is equipped with water outlet, the inside of testing seal section
Fluid course equipped with connection water inlet and water outlet.
The present invention's sets structure, by the way that runner is arranged inside it in the structure of existing testing seal section so that no
Eccentric injection mandrel with bridge ensure that the smooth of liquid stream flows down without getting lodged at testing seal section after being set.Injection well downhole flow regulator
A kind of equipment used in flushing, and testing seal section be then in injection well downhole flow regulator inject flow test when to water distribution
Device is blocked, when carrying out collecting type measurement in existing bridge type water distributor, for the liquid stream for making in all inflow injection well downhole flow regulators
Afflux flowmeter is all flowed through, therefore testing seal section can block intracavity pipeline among injection well downhole flow regulator, after flowmeter measures
Liquid stream can finally be blocked can not continue to flow down in the top of testing seal section, but bridge type water distributor is due to bridge pipe
Road, therefore the liquid stream being plugged can smoothly flow down without will produce the case where borehole pressure increases from bridge ducts；But
In the eccentric injection mandrel for being used without bridge, the internal cavity at center is only existed in injection well downhole flow regulator, therefore seal using existing test
After Duan Jinhang sets closure, the liquid after flowmeter measures does not have defluent channel, and therefore, liquid stream liquid is just got lodged in
The position that tested seal section seals, liquid stream are difficult to pass through, then the liquid that has been injected into will be caused to overflow import, it is difficult to
Measure flow.The testing seal section of the present invention, by being equipped with water inlet at top, bottom is equipped with water outlet, testing seal section
It is internally provided with the fluid course of connection water inlet and water outlet, when flowing into injection well downhole flow regulator central lumen pipeline, afflux flowmeter position
In the top of testing seal section, the water outlet of afflux flowmeter is connected with the water inlet on testing seal section, and testing seal section will
Central lumen pipeline is blocked, therefore all liquid streams entered in injection well downhole flow regulator central lumen pipeline can all pass through afflux flow
Meter, improves the efficiency of afflux, testing seal section is flowed through from the water outlet of afflux flowmeter by the liquid stream of afflux flowmeter
Fluid course is finally flowed out from water outlet so that liquid stream will not be blocked in testing seal section, not only ensure that collection flow measurement
Effect and measurement accuracy, while balancing the pressure of central lumen pipeline in injection well downhole flow regulator so that flow measurement is smoothed out.On
The testing seal section employed in existing flow rate test technology may be used in the testing seal section stated, therefore does not explain excessively at this moment
State the concrete structure of testing seal section.
The testing seal section includes casing cylinder, and the upper end of casing cylinder is equipped with water inlet, and lower end is equipped with water outlet, outside
It is arranged with successively on the outer wall of thimble body and is fixed ring and compression promotion set, be fixed ring and compression is pushed between covering and is arranged
Be useful for the skin muffetee set, one end of skin muffetee inner wall is connected with ring outer wall is fixed, the other end of skin muffetee inner wall with
Compression compression pushes set outer wall to be connected, and compression promotion is sleeved under the driving of driving mechanism can be axially solid towards compressing
Determine ring movement, when compression pushes set court to be fixed ring direction and moves, skin muffetee is squeezed deformation, the middle part energy of skin muffetee
Enough direction protrusions away from casing cylinder set injection well downhole flow regulator, and the water outlet is arranged on the side wall of casing cylinder bottom end.
The present invention, which pushes to compress by driving mechanism, pushes set to ring translational motion is fixed, and consolidates due to being fixed ring
It is scheduled on casing cylinder, therefore compressing promotion and being sleeved on opens the intermediate position outwardly convex of skin muffetee in translation motion, it is raised
The inner wall of the central lumen pipeline of edge part and injection well downhole flow regulator fits closely, to realize that testing seal section sets injection well downhole flow regulator,
Make compression that set counter motion be pushed to return in situ, unloads and allowance for bark muffetee pressure, skin muffetee is allowed to retract original by the elastic force and gravity of itself
Carry out form, is recycled with this and realize the opening of skin muffetee and pack up, achieve the purpose that set and unseal, testing seal section of the invention
Liquid stream can be more effectively insulated, is efficient integrated less than 3m3The small flow in/day provides guarantee.Skin wrist mentioned above
For setting skin wrist structure, material all same in structure in set and existing technology.
Driving mechanism includes the driving motor being arranged in outer shell barrel body below water inlet, the lower end of driving motor be connected with
The first coaxial transmission shaft of casing cylinder is arranged with translation guide sleeve by screw thread pair on the first transmission shaft, is translatable outside guide sleeve
It is vertically connected with movable pin on wall, the bar shaped moving hole parallel with casing cylinder axis is offered on casing cylinder outer wall, it is mobile
Between translation guide sleeve and compression push set, the end stretching moving hole of movable pin is outer and pushes set outer wall with compression in hole
It flushes, when driving motor drives the first transmission shaft to rotate around itself, translation guide sleeve and movable pin court can be driven
It compresses and pushes set direction for linear motion, movable pin, which can move along the track movement in hole and compress, pushes set end
Contact, and push compression that set is pushed to set injection well downhole flow regulator until skin muffetee is central raised towards the movement of ring direction is fixed；Driving
It is equipped with fluid course between motor, the first transmission shaft, translation guide sleeve and casing cylinder inner wall and connects with water inlet and water outlet
It is logical.
The driving structure of the present invention drives the rotation of the first transmission shaft, the first transmission shaft to pass through spiral shell by driving motor first
Movement between line pair drives translation guide sleeve towards promotion set translational motion is compressed, hole is moved along by movable pin
Thrust is passed to compression and pushes by track movement to be put on, and is pushed to compress pushing set translation, is held out against skin muffetee, and the other side of skin muffetee
It is fixed on casing cylinder due to being fixed ring, under the driving of driving motor, skin muffetee just by spreading, reaches closing
The purpose of eccentric injection mandrel, the program for withdrawing skin muffetee are then the first transmission shaft reverse operatings of driving, and skin muffetee is allowed to pass through itself
Elastic force and gravity retract original form.
It is connected with positioning device below casing cylinder, the positioning device includes second driving shaft, the top of second driving shaft
Coaxially connected together by coupling sleeve between the bottom end of the first transmission shaft, be arranged with successively on second driving shaft withstanding tight block,
Latch segment, withstanding tight block are fixedly connected with the bottom end of casing cylinder, are socketed by screw thread pair between latch segment and second driving shaft, top
Hinged there are two locating detent on one end of latch segment on tight block, two locating detents are located at the both sides of second driving shaft,
Second driving shaft by coupling sleeve under the drive of the first transmission shaft around own axis, can make withstanding tight block away from or
Person moves in a straight line close to the direction of locating detent, and locating detent is made to open or withdraw to the both sides of second driving shaft.
Positioning device in the present invention so that structure of the invention is accurately positioned in injection well downhole flow regulator, ensures it always in water distribution
In the central tube of device, when original state, locating detent is closed, i.e., latch segment by with the matched shape of locating detent
Shape, by the free end of locating detent in close second transmission on the both sides for being retracted in second driving shaft, the hinged end of locating detent
The side wall of axis is equipped with convex block, and the thickness of convex block and the wall thickness of latch segment match, and it is locating detent that the hinged place of locating detent, which carries,
Outward tension spring, the direction of latch segment towards convex block is moved to be bonded with convex block, then by with top pressure withstanding tight block
Collective effect so that the free end of locating detent in the state of withdrawal, locating detent close to second driving shaft side wall and lock
The outer wall of tight block fits closely.When structure of the invention need use positioned when, pass through driving motor drive second be driven
Shaft rotation is dynamic, and second driving shaft screw thread pair drives latch segment to be translated away from the direction of locating detent, unclamps the limitation to convex block and makees
With, then locating detent tension spring under the action of be flared out, i.e., latch segment is compressed close to locating detent and is withdrawn, far from fixed
Position pawl just voluntarily opens so that structure of the invention can navigate in the eccentric injection mandrel pipeline without bridge.Wherein, it first passes
The hand of spiral and screw thread of screw thread pair, second driving shaft between moving axis and translation guide sleeve and the screw thread pair between latch segment
The setting of formation will match, while the length of moving hole will be also mutually matched with the distance between locating detent and latch segment, be made
While proper driving motor drives the first transmission shaft and second driving shaft to rotate together, skin muffetee and locating detent open simultaneously or
Person withdraws simultaneously, in this way can be by a driving motor, while realizing opening or the withdrawal of skin muffetee and locating detent.Wherein
The setting that hand of spiral mentioned above and screw thread are formed will match, between the length and locating detent and latch segment of moving hole
Distance to be also mutually matched and can be calculated by existing mechanical structure, transmission principle, just excessively illustrate how herein
Realize above-mentioned be mutually matched.
The course of work of the present invention is, by the upper end phase of the lower end water outlet of afflux flowmeter and the casing cylinder of the present invention
It is connected even and with water inlet, then afflux flowmeter and the present invention is put into the intracavity pipeline of injection well downhole flow regulator as a whole
In, after being put into suitable position, driving motor starts, and drives the first transmission shaft and second driving shaft rotation so that fixed
Position pawl is opened, and locating detent is contacted and blocked with intracavity pipeline and positioned, while skin muffetee opening blocks intracavity pipeline.
The inflow packer flowmeter of subsequent liquid stream, the liquid stream not being flowed into packer flowmeter are then blocked at skin muffetee, are kept away
Exempt from it and continues to flow downward that it will cause this part liquid flows to be measured without packer flowmeter, the stream sealed in this way by skin wrist
Hydrodynamic stream finally can only also be flowed by water inlet in packer flowmeter, and afflux effect can be greatly improved by blocking liquid stream
The measuring accuracy of fruit and flow；It completes the liquid stream measured to flow out from packer flowmeter, shell is then entered by water inlet
In cylinder, liquid stream is by driving motor and the first axial fluid course of transmission then by being arranged on outer shell barrel body sidewall
Liquid outlet and moving hole outflow, i.e., liquid stream from the inside of testing seal section pass through skin muffetee formed set structure so that survey
The inside of examination seal section sets the cavity outside structure lower housings cylinder with skin muffetee and is directly connected to, and passes through internal liquid runner
It establishes and realizes the guarantee liquid stream smooth outflow in the case where external fluid course is blocked, balance inside casing cylinder and outside
Between pressure, the complete liquid flow of the injection well downhole flow regulator runner of skin muffetee packing is passed through to establishing one inside testing seal section
Road realizes the setting of the present invention, the purpose of positioning and liquid flow channels, passes through one while solving flow problem
A driving motor realizes switch locating detent and opens the orderly control of sealing skin muffetee time difference.
Be arranged with sealing adaptor head on second driving shaft above withstanding tight block, the inner wall of sealing adaptor head and casing cylinder it
Between be tightly connected, second driving shaft is sealed by sealing adaptor head, i.e., the entire fluid course in inside of the invention is located at
The top of sealing adaptor head does not form any runner between the positioning device of lower section, can avoid liquid stream and positioning in this way
Component structural excessively contacts in device.
It is fixed ring and compression pushes the outer wall of casing cylinder between covering to be equipped with multiple through-holes, such liquid stream is flowing into
When in casing cylinder, in the cavity that inner wall is formed when liquid stream can also be flowed into skin muffetee protrusion, to balance skin muffetee inner wall
Flow stream pressure between outer wall.
It is arranged with cutting ferrule outside latch segment, is fixedly connected by connecting plate between cutting ferrule and latch segment, latch segment can be in card
It moves in a straight line but cannot rotate around cutting ferrule axis along the axis of cutting ferrule in set, latch segment positioning is led for cutting ferrule
To making it only do translational motion under the action of screw thread pair without as second driving shaft rotates.
Mounting cap is connected with below cutting ferrule, the surface of mounting cap is equipped with locating slot, and locating slot is inserted into second driving shaft bottom
In, mounting cap is used for the axially position to second driving shaft.
Compared with prior art, the present invention having the following advantages and advantages：
1, the present invention is a kind of setting structure for the small flow in oil field without the afflux of bridge eccentric injection mandrel, close in existing test
Seal section structure on by the way that runner is arranged inside it so that without bridge eccentric injection mandrel after being set, ensure that liquid stream
It is smooth flow down without getting lodged at testing seal section；
2, the present invention is a kind of setting structure for the small flow in oil field without the afflux of bridge eccentric injection mandrel, is asked solving overcurrent
Switch locating detent is realized by a driving motor while topic and opens the orderly control of sealing skin muffetee time difference；
3, the present invention is a kind of setting structure for the small flow in oil field without the afflux of bridge eccentric injection mandrel, ensure that afflux is surveyed
The effect and measurement accuracy of amount, while balancing the pressure of injection well downhole flow regulator intracavity pipeline so that flow measurement is smoothed out.
Description of the drawings
Attached drawing described herein is used for providing further understanding the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is structure of the invention off working state schematic diagram；
Fig. 2 is structure of the invention working state schematic representation.
Label and corresponding parts title in attached drawing：
1- casing cylinders, 2- are fixed ring, and 3-, which is compressed, pushes set, 4- skin muffetees, the first transmission shafts of 5-, and 6- translations are oriented to
Set, 7- moving hole, 8- activity pins, 9- second driving shafts, 10- coupling sleeves, 11- sealing adaptor heads, 12- withstanding tight blocks, 13- lockings
Block, 14- locating detents, 15- cutting ferrules, 16- mounting caps, 17- driving motors.
Specific implementation mode
To make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment 1
As shown in Figure 1, the present invention is a kind of to set structure for the small flow in oil field without the afflux of bridge eccentric injection mandrel, including
For the testing seal section with bridge eccentric injection mandrel, the top of the testing seal section is equipped with water inlet, and bottom is equipped with water outlet,
The fluid course for being internally provided with connection water inlet and water outlet of testing seal section.
The present invention's sets structure, by the way that runner is arranged inside it in the structure of existing testing seal section so that no
Eccentric injection mandrel with bridge ensure that the smooth of liquid stream flows down without getting lodged at testing seal section after being set.Injection well downhole flow regulator
A kind of equipment used in flushing, and testing seal section be then in injection well downhole flow regulator inject flow test when to water distribution
Device is blocked, when carrying out collecting type measurement in existing bridge type water distributor, for the liquid stream for making in all inflow injection well downhole flow regulators
Afflux flowmeter is all flowed through, therefore testing seal section can block intracavity pipeline among injection well downhole flow regulator, after flowmeter measures
Liquid stream can finally be blocked can not continue to flow down in the top of testing seal section, but bridge type water distributor is due to bridge pipe
Road, therefore the liquid stream being plugged can smoothly flow down without will produce the case where borehole pressure increases from bridge ducts；But
In the eccentric injection mandrel for being used without bridge, the internal cavity at center is only existed in injection well downhole flow regulator, therefore seal using existing test
After Duan Jinhang sets closure, the liquid after flowmeter measures does not have defluent channel, and therefore, liquid stream liquid is just got lodged in
The position that tested seal section seals, liquid stream are difficult to pass through, then the liquid that has been injected into will be caused to overflow import, it is difficult to
Measure flow.The testing seal section of the present invention, by being equipped with water inlet at top, bottom is equipped with water outlet, testing seal section
It is internally provided with the fluid course of connection water inlet and water outlet, when flowing into injection well downhole flow regulator central lumen pipeline, afflux flowmeter position
In the top of testing seal section, the water outlet of afflux flowmeter is connected with the water inlet on testing seal section, and testing seal section will
Central lumen pipeline is blocked, therefore all liquid streams entered in injection well downhole flow regulator central lumen pipeline can all pass through afflux flow
Meter, improves the efficiency of afflux, testing seal section is flowed through from the water outlet of afflux flowmeter by the liquid stream of afflux flowmeter
Fluid course is finally flowed out from water outlet so that liquid stream will not be blocked in testing seal section, not only ensure that collection flow measurement
Effect and measurement accuracy, while balancing the pressure of central lumen pipeline in injection well downhole flow regulator so that flow measurement is smoothed out.On
The testing seal section employed in existing flow rate test technology may be used in the testing seal section stated, therefore does not explain excessively at this moment
State the concrete structure of testing seal section.
Embodiment 2
As depicted in figs. 1 and 2, the present invention is a kind of setting knot for the small flow in oil field without the afflux of bridge eccentric injection mandrel
Structure, on the basis of embodiment 1, the testing seal section includes casing cylinder 1, and the upper end of casing cylinder 1 is equipped with water inlet, under
End is equipped with water outlet, is arranged with successively on the outer wall of casing cylinder 1 and is fixed ring 2 and compresses promotion set 3, is fixed ring 2
Compress push set 3 between be arranged with skin muffetee 4 for setting, one end of 4 inner wall of skin muffetee be fixed 2 outer wall phase of ring
Even, the other end of 4 inner wall of skin muffetee is connected with promotion 3 outer walls of set are compressed, and compresses and pushes set 3 under the driving of driving mechanism
Can be moved along axis towards being fixed ring 2, push set 3 towards when being fixed 2 direction of ring and moving compressing, skin muffetee 4 by
Injection well downhole flow regulator intracavity pipeline, institute can be set to the middle part of crimp, skin muffetee 4 away from the direction protrusion of casing cylinder 1
Water outlet is stated to be arranged on the side wall of 1 bottom end of casing cylinder.
The present invention, which pushes to compress by driving mechanism, pushes set to ring translational motion is fixed, and consolidates due to being fixed ring
It is scheduled on casing cylinder, therefore compressing promotion and being sleeved on opens the intermediate position outwardly convex of skin muffetee in translation motion, it is raised
The inner wall of the central lumen pipeline of edge part and injection well downhole flow regulator fits closely, to realize that testing seal section sets injection well downhole flow regulator,
Make compression that set counter motion be pushed to return in situ, unloads and allowance for bark muffetee pressure, skin muffetee is allowed to retract original by the elastic force and gravity of itself
Carry out form, is recycled with this and realize the opening of skin muffetee and pack up, achieve the purpose that set and unseal, testing seal section of the invention
Liquid stream can be more effectively insulated, is efficient integrated less than 3m3The small flow in/day provides guarantee.Skin wrist mentioned above
For setting skin wrist structure, material all same in structure in set and existing technology.
Embodiment 3
As depicted in figs. 1 and 2, the present invention is a kind of setting knot for the small flow in oil field without the afflux of bridge eccentric injection mandrel
Structure, on the basis of embodiment 2, driving mechanism includes the driving motor 17 being arranged in casing cylinder 1 below water inlet, driving
The lower end of motor is connected with first transmission shaft 5 coaxial with casing cylinder 1, and translation is arranged with by screw thread pair on the first transmission shaft 5
Guide sleeve 6, be translatable 6 outer wall of guide sleeve on be vertically connected with movable pin 8, offered on 1 outer wall of casing cylinder and 1 axis of casing cylinder
The parallel bar shaped moving hole 7 of line, between moving hole 7 is located at translation guide sleeve 6 and compresses promotion set 3, the end of movable pin 8 is stretched
Go out outside moving hole 7 and pushes 3 outer walls of set to flush with compressing, when driving motor drives the first transmission shaft 5 to rotate around itself,
Translation guide sleeve 6 and movable pin 8 can be driven, and towards compressing, promotion 3 directions of set are for linear motion, and movable pin 8 being capable of edge
It the track movement of moving hole 7 and pushes 3 ends of set to contact with compressing, and push compression to push and cover 3 towards being fixed 2 direction of ring
Movement sets injection well downhole flow regulator intracavity pipeline until skin muffetee 4 is central raised；Driving motor, the first transmission shaft 5, translation guide sleeve 6 with
It is equipped with fluid course between the inner wall of casing cylinder 1 and is connected to water inlet with water outlet.
The driving structure of the present invention drives the rotation of the first transmission shaft, the first transmission shaft to pass through spiral shell by driving motor first
Movement between line pair drives translation guide sleeve towards promotion set translational motion is compressed, hole is moved along by movable pin
Thrust is passed to compression and pushes by track movement to be put on, and is pushed to compress pushing set translation, is held out against skin muffetee, and the other side of skin muffetee
It is fixed on casing cylinder due to being fixed ring, under the driving of driving motor, skin muffetee just by spreading, reaches closing
The purpose of eccentric injection mandrel, the program for withdrawing skin muffetee are then the first transmission shaft reverse operatings of driving, and skin muffetee is allowed to pass through itself
Elastic force and gravity retract original form.
Embodiment 4
As depicted in figs. 1 and 2, the present invention is a kind of setting knot for the small flow in oil field without the afflux of bridge eccentric injection mandrel
Structure, on the basis of embodiment 3,1 lower section of casing cylinder is connected with positioning device, and the positioning device includes second driving shaft 9, the
It is coaxially connected together by coupling sleeve 10 between the top of two transmission shafts 9 and the bottom end of the first transmission shaft 5, second driving shaft 9
On be arranged with withstanding tight block 12, latch segment 13 successively, withstanding tight block 12 is fixedly connected with the bottom end of casing cylinder 1, latch segment 13 and
It is socketed by screw thread pair between two transmission shafts 9, is hinged there are two locating detent 14 on one end of latch segment 13 on withstanding tight block 12,
Two locating detents 14 are located at the both sides of second driving shaft 9, and second driving shaft 9 is by coupling sleeve 10 in the first transmission shaft 5
Around own axis under drive, withstanding tight block 12 can be made to be moved in a straight line away from or close to the direction of locating detent 14,
Locating detent 14 is set to open or withdraw to the both sides of second driving shaft 9.
Positioning device in the present invention so that structure of the invention is accurately positioned in injection well downhole flow regulator, ensures it always in water distribution
In the central tube of device, when original state, locating detent is closed, i.e., latch segment by with the matched shape of locating detent
Shape, by the free end of locating detent in close second transmission on the both sides for being retracted in second driving shaft, the hinged end of locating detent
The side wall of axis is equipped with convex block, and the thickness of convex block and the wall thickness of latch segment match, and it is locating detent that the hinged place of locating detent, which carries,
Outward tension spring, the direction of latch segment towards convex block is moved to be bonded with convex block, then by with top pressure withstanding tight block
Collective effect so that the free end of locating detent in the state of withdrawal, locating detent close to second driving shaft side wall and lock
The outer wall of tight block fits closely.When structure of the invention need use positioned when, pass through driving motor drive second be driven
Shaft rotation is dynamic, and second driving shaft screw thread pair drives latch segment to be translated away from the direction of locating detent, unclamps the limitation to convex block and makees
With, then locating detent tension spring under the action of be flared out, i.e., latch segment is compressed close to locating detent and is withdrawn, far from fixed
Position pawl just voluntarily opens so that structure of the invention can navigate in the eccentric injection mandrel pipeline without bridge.Wherein, it first passes
The hand of spiral and screw thread of screw thread pair, second driving shaft between moving axis and translation guide sleeve and the screw thread pair between latch segment
The setting of formation will match, while the length of moving hole will be also mutually matched with the distance between locating detent and latch segment, be made
While proper driving motor drives the first transmission shaft and second driving shaft to rotate together, skin muffetee and locating detent open simultaneously or
Person withdraws simultaneously, in this way can be by a driving motor, while realizing opening or the withdrawal of skin muffetee and locating detent.Wherein
The setting that hand of spiral mentioned above and screw thread are formed will match, between the length and locating detent and latch segment of moving hole
Distance to be also mutually matched and can be calculated by existing mechanical structure, transmission principle, just excessively illustrate how herein
Realize above-mentioned be mutually matched.
The course of work of the present invention is, by the upper end phase of the lower end water outlet of afflux flowmeter and the casing cylinder of the present invention
It is connected even and with water inlet, then afflux flowmeter and the present invention is put into the intracavity pipeline of injection well downhole flow regulator as a whole
In, after being put into suitable position, driving motor starts, and drives the first transmission shaft and second driving shaft rotation so that fixed
Position pawl is opened, and locating detent is contacted and blocked with intracavity pipeline and positioned, while skin muffetee opening blocks intracavity pipeline.
It is blocked at subsequent skin muffetee, liquid stream can only flow into packer flowmeter, due to the closure of skin muffetee, force from all notes in ground
The liquid stream for entering oil pipe flows into instrument inner cavity by the import of instrument upper end, it is made all to be measured, can be big by blocking liquid stream
The measuring accuracy of big raising catchment effect and flow；Complete measure liquid stream from packer flowmeter flow out, then by into
The mouth of a river enters in casing cylinder, then liquid stream is existed by driving motor and the first axial fluid course of transmission by setting
Liquid outlet on casing cylinder side wall and moving hole outflow, i.e. liquid stream pass through the seat that skin muffetee is formed from the inside of testing seal section
Seal structure so that the inside of testing seal section sets the cavity outside structure lower housings cylinder with skin muffetee and is directly connected to, and passes through
The foundation of internal liquid runner, which is realized, ensures liquid stream smooth outflow in the case where external fluid course is blocked, and balances outer shell barrel
Pressure between portion and outside in vivo passes through the injection well downhole flow regulator stream of skin muffetee packing to establish one inside testing seal section
The complete flow channel for liquids in road realizes the setting of the present invention, the purpose of positioning and liquid flow channels, is asked solving overcurrent
Switch locating detent is realized by a driving motor while topic and opens the orderly control of sealing skin muffetee time difference.
Preferably, the top of withstanding tight block 12 is arranged with sealing adaptor head 11 on second driving shaft 9, sealing adaptor head 11 with it is outer
It is tightly connected between the inner wall of thimble body 1.
Preferably, being fixed ring 2 and compressing pushes the outer wall for covering casing cylinder 1 between 3 to be equipped with multiple through-holes.
Preferably, it is arranged with cutting ferrule 15 outside latch segment 13, is fixedly connected by connecting plate between cutting ferrule 15 and latch segment 13,
Latch segment 13 can be moved in a straight line but cannot be rotated around 15 axis of cutting ferrule along the axis of cutting ferrule 15 in cutting ferrule 15.
Preferably, the lower section of cutting ferrule 15 is connected with mounting cap 16, and the surface of mounting cap 16 is equipped with locating slot, second driving shaft 9
Bottom is inserted into locating slot.
Above-described specific implementation mode has carried out further the purpose of the present invention, technical solution and advantageous effect
It is described in detail, it should be understood that the foregoing is merely the specific implementation mode of the present invention, is not intended to limit the present invention
Protection domain, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (8)
1. a kind of setting structure for the small flow in oil field without the afflux of bridge eccentric injection mandrel, which is characterized in that including being used to match
The top of the testing seal section of hydrophone flow rate test, the testing seal section is equipped with water inlet, and bottom is equipped with water outlet, and test is close
The fluid course for being internally provided with connection water inlet and water outlet of envelope section.
2. it is according to claim 1 it is a kind of setting structure without the afflux of bridge eccentric injection mandrel for the small flow in oil field,
It is characterized in that, the testing seal section includes casing cylinder (1), and the upper end of casing cylinder (1) is equipped with water inlet, and lower end is equipped with out
The mouth of a river, is arranged on the outer wall of casing cylinder (1) to be fixed ring (2) and compress and pushes set (3) successively, is fixed ring (2)
Compress push set (3) between be arranged with skin muffetee (4) for setting, one end of skin muffetee (4) inner wall and be fixed ring
(2) outer wall is connected, and the other end of skin muffetee (4) inner wall is connected with promotion set (3) outer wall is compressed, and compresses and set (3) is pushed to exist
Ring (2) movement can be fixed under the driving of driving mechanism along axis court, pushes set (3) court to be fixed ring compressing
(2) when direction moves, skin muffetee (4) is squeezed deformation, and the middle part of skin muffetee (4) can be away from casing cylinder (1)
Direction protrusion sets injection well downhole flow regulator intracavity pipeline, and the water outlet is arranged on the side wall of casing cylinder (1) bottom end.
3. it is according to claim 2 it is a kind of setting structure without the afflux of bridge eccentric injection mandrel for the small flow in oil field,
It is characterized in that, driving mechanism includes the driving motor (17) being arranged below casing cylinder (1) interior water inlet, driving motor (17)
Lower end be connected with first transmission shaft (5) coaxial with casing cylinder (1), be arranged with by screw thread pair on the first transmission shaft (5) flat
Action-oriented set (6), be translatable guide sleeve (6) outer wall on be vertically connected with movable pin (8), offered on casing cylinder (1) outer wall with
The parallel bar shaped moving hole (7) of casing cylinder (1) axis, moving hole (7), which is located at translation guide sleeve (6) and compresses, pushes set (3)
Between, the end of movable pin (8) stretches out moving hole (7) outside and pushes set (3) outer wall to flush with compressing, and driving motor drives the
When one transmission shaft (5) rotates around itself, translation guide sleeve (6) and movable pin (8) can be driven to be covered towards promotion is compressed
(3) direction is for linear motion, and the track movement that movable pin (8) can move along hole (7) covers (3) end with promotion is compressed
Portion's contact, and push compression that set (3) is pushed to be set towards the movement of ring (2) direction is fixed up to skin muffetee (4) is central raised
Injection well downhole flow regulator intracavity pipeline；It is set between driving motor, the first transmission shaft (5), translation guide sleeve (6) and the inner wall of casing cylinder (1)
There is fluid course and is connected to water inlet with water outlet.
4. it is according to claim 3 it is a kind of setting structure without the afflux of bridge eccentric injection mandrel for the small flow in oil field,
It is characterized in that, is connected with positioning device below casing cylinder (1), the positioning device includes second driving shaft (9), second driving shaft
(9) it is connected together between top and the bottom end of the first transmission shaft (5) by the way that coupling sleeve (10) is coaxial, second driving shaft (9)
On be arranged with withstanding tight block (12), latch segment (13) successively, withstanding tight block (12) is fixedly connected with the bottom end of casing cylinder (1), locking
It is socketed by screw thread pair between block (13) and second driving shaft (9), is cut with scissors on one end of latch segment (13) on withstanding tight block (12)
It connects there are two locating detent (14), two locating detents (14) are located at the both sides of second driving shaft (9), and second driving shaft (9) is logical
Coupling sleeve (10) is crossed under the drive of the first transmission shaft (5) around own axis, can make withstanding tight block (12) away from or
Person moves in a straight line close to the direction of locating detent (14), and locating detent (14) is made to open or receive to the both sides of second driving shaft (9)
It returns.
5. it is according to claim 4 it is a kind of setting structure without the afflux of bridge eccentric injection mandrel for the small flow in oil field,
Be characterized in that, be arranged with sealing adaptor head (11) on second driving shaft (9) above withstanding tight block (12), sealing adaptor head (11) with
It is tightly connected between the inner wall of casing cylinder (1).
6. it is according to claim 2 it is a kind of setting structure without the afflux of bridge eccentric injection mandrel for the small flow in oil field,
It is characterized in that, is fixed ring (2) and compression pushes the outer wall of casing cylinder (1) between covering (3) to be equipped with multiple through-holes.
7. it is according to claim 4 it is a kind of setting structure without the afflux of bridge eccentric injection mandrel for the small flow in oil field,
It is characterized in that, cutting ferrule (15) is arranged with outside latch segment (13), fixed and connected by connecting plate between cutting ferrule (15) and latch segment (13)
It connects, latch segment (13) can move in a straight line along the axis of cutting ferrule (15) in cutting ferrule (15) but cannot be around cutting ferrule (15) axis
It rotates.
8. it is according to claim 7 it is a kind of setting structure without the afflux of bridge eccentric injection mandrel for the small flow in oil field,
It is characterized in that, mounting cap (16) is connected with below cutting ferrule (15), and the surface of mounting cap (16) is equipped with locating slot, second driving shaft
(9) bottom is inserted into locating slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810500600.2A CN108590604B (en) | 2018-05-23 | 2018-05-23 | Flow-collecting setting structure for small-flow bridge-free eccentric water distributor of oil field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810500600.2A CN108590604B (en) | 2018-05-23 | 2018-05-23 | Flow-collecting setting structure for small-flow bridge-free eccentric water distributor of oil field |
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| CN108590604A true CN108590604A (en) | 2018-09-28 |
| CN108590604B CN108590604B (en) | 2021-03-02 |
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| CN201810500600.2A Active CN108590604B (en) | 2018-05-23 | 2018-05-23 | Flow-collecting setting structure for small-flow bridge-free eccentric water distributor of oil field |
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| CN108590604B (en) | 2021-03-02 |
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