CN110029958A - Production tree port sealing device - Google Patents
Production tree port sealing device Download PDFInfo
- Publication number
- CN110029958A CN110029958A CN201810026388.0A CN201810026388A CN110029958A CN 110029958 A CN110029958 A CN 110029958A CN 201810026388 A CN201810026388 A CN 201810026388A CN 110029958 A CN110029958 A CN 110029958A
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- China
- Prior art keywords
- production tree
- sucker rod
- seal body
- sealing
- port
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- 238000007789 sealing Methods 0.000 title claims abstract description 165
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 112
- 230000002093 peripheral effect Effects 0.000 claims abstract description 11
- 238000005086 pumping Methods 0.000 claims description 12
- 239000002699 waste material Substances 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 59
- 239000010779 crude oil Substances 0.000 description 23
- 230000013011 mating Effects 0.000 description 8
- 238000009434 installation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000565 sealant Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 241001247986 Calotropis procera Species 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 244000147058 Derris elliptica Species 0.000 description 1
- 229910000677 High-carbon steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 235000004338 Syringa vulgaris Nutrition 0.000 description 1
- 244000297179 Syringa vulgaris Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Sealing Devices (AREA)
Abstract
The present invention provides a kind of production tree port sealing device, comprising: seal body, seal body are made of multiple sealing blocks；Multiple sealing blocks are used to be arranged between sucker rod and production tree and multiple sealing blocks are arranged radially along the outer peripheral surface of sucker rod, so that the lateral surface of multiple sealing blocks is abutted with the port inner wall of production tree, the medial surface of multiple sealing blocks is abutted with the outer surface of sucker rod.When replacing polished rod, after being arranged radially by multiple sealing blocks and form seal body along sucker rod outer peripheral surface, seal body is plugged in port, seal body can prevent the oil gas in production tree by overflowing between port and sucker rod, avoid well control safety risk, pollution environment and energy waste.
Description
Technical field
The present invention relates to oil exploration equipment manufacturing technology field more particularly to a kind of production tree port sealing devices.
Background technique
Oil well generally comprises the oil pipe that oil reservoirs are extended to from ground to underground, and oil pump is arranged in oil pipe, and is located at oil
The bottom of pipe, the top of oil pipe are connected to the bottom end of production tree；Sucker rod is equipped in oil pipe and production tree, sucker rod
Bottom end is connect with oil pump, and the top of sucker rod is connect with pumping unit.When carrying out oil pumping operation, pumped by pumping unit drawing
Bar moves upwards sucker rod, and then drives operation of oil pump, by the crude oil input oil pipe in oil reservoirs, then passes through production tree
Crude oil is exported, and then realizes the exploitation of petroleum.When being pumped, the top of sucker rod can be by the port at the top of production tree
It stretches out, so that the top exposure of sucker rod is in air, sucker rod is easy to be corroded, since the length of sucker rod is longer,
Sucker rod is replaced more difficult after being corroded.
In the prior art, the shorter polished rod of length, the side wall on sucker rod top are often set between sucker rod and pumping unit
On be formed with annular flange, one end of polished rod and the top of sucker rod removably connect, and the other end of polished rod and pumping unit connect
It connects；Sealing cover is covered on the port at the top of production tree, polished rod is threaded through in sealing hole, and sealing cover is for sealing production tree
Gap between top and polished rod, in case the crude oil in production tree is overflowed by the port of production tree.During oil exploitation
Polished rod can be stretched out by the top of production tree, and sucker rod is always positioned in oil pipe and production tree, and then it is rotten to avoid sucker rod
Erosion；It, need to be by sealing cover by production tree when polished rod, which is corroded, to be needed replacing since polished rod is different with the sectional dimension of sucker rod
Top disassembles, and drawing polished rod stretches out the top of sucker rod by the port of production tree later, later by polished rod by sucker rod
Top unload, the polished rod more renewed.
However, in the prior art, when replacing polished rod, sealing cover need to be unloaded by the port of production tree, recovered the oil at this time
The port of tree loses sealing, and the oil gas in well can be overflowed by the top of production tree, generates well control safety risk, environmental pollution and energy
The waste in source.
Summary of the invention
In view of this, the present invention provides a kind of production tree port sealing device, to solve when replacing polished rod, production tree
Port loses sealing, and oil gas can be overflowed by the top of production tree, generates well control safety risk, environmental pollution and the waste of the energy
Technical problem.
The present invention provides a kind of production tree port sealing devices, comprising: include: seal body, the seal body by
Multiple sealing blocks are constituted；Multiple sealing blocks are used to be arranged between sucker rod and production tree and multiple sealing block edges
The outer peripheral surface of the sucker rod is arranged radially, so that in the port of the lateral surface of multiple sealing blocks and the production tree
Wall abuts, and the medial surface of multiple sealing blocks is abutted with the outer surface of the sucker rod.
Production tree port sealing device as described above, it is preferable that the area of section on the seal body top is greater than institute
The area of section of seal body bottom end is stated, the tip section area of the seal body is greater than the area of section of the port.
Production tree port sealing device as described above, it is preferable that the top of the seal body has for supporting
State the supporting member of the annular flange on sucker rod top.
Production tree port sealing device as described above, it is preferable that the supporting member and the seal body are dismountable
Connection.
Production tree port sealing device as described above, it is preferable that be provided with lifting piece on the supporting member.
Production tree port sealing device as described above, it is preferable that the sealing block is three.
Production tree port sealing device as described above, it is preferable that two adjacent sides on the two neighboring sealing block
Protrusion and recessed portion are provided on face, the protrusion is used for the recessed portion being accommodated on the adjacent sealing block
It is interior.
Production tree port sealing device as described above, it is preferable that the protrusion is in the form of a column, the axis of the protrusion
For being arranged along the axis perpendicular to the sucker rod.
Production tree port sealing device as described above, it is preferable that the top of each sealing block is provided with connection
Ear offers lifting eye on each engaging lug.
Production tree port sealing device as described above, it is preferable that further include lifting rod, one end of the lifting rod has
One hanging ring；The lifting rod be it is multiple, the hanging ring on each lifting rod is threaded through in the lifting eye.
Production tree port sealing device provided by the invention, by multiple sealing blocks along the radial row of sucker rod outer peripheral surface
Column, so that the lateral surface of multiple sealing blocks is abutted with production tree port inner wall, while the medial surface and sucker rod of multiple sealing blocks
Outer surface abuts；When replacing polished rod, multiple sealing blocks can be arranged radially along sucker rod outer peripheral surface and form sealing originally
After body, seal body is plugged in port, seal body can prevent the oil gas in production tree by between port and sucker rod
It overflows, avoids well control safety risk, pollution environment and energy waste.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the axonometric drawing of production tree port sealing device provided in an embodiment of the present invention；
Fig. 2 is the main view of production tree port sealing device provided in an embodiment of the present invention；
The top view of Fig. 3 production tree port sealing device provided in an embodiment of the present invention；
Fig. 4 is the installation in production tree port sealing device provided in an embodiment of the present invention between supporting member and annular flange
Schematic diagram；
Fig. 5 is the scheme of installation in production tree port sealing device provided in an embodiment of the present invention between each sealing block；
Fig. 6 is the structural schematic diagram of sealing block in production tree port sealing device provided in an embodiment of the present invention.
Description of symbols:
10, sealing block；
20, sucker rod；
30, supporting member；
101, protrusion；
102, recessed portion；
103, engaging lug；
104, lifting eye；
105, lifting rod；
201, annular flange；
301, lifting piece.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
In the present invention, unless otherwise specific regulation, the terms such as term " installation ", " connected ", " connection ", " fixation " are answered
It is interpreted broadly, for example, it may be being fixedly connected, is also possible to removably connect, or be integrally formed, can be mechanical connect
It connects, is also possible to be electrically connected or can communicate each other；It can be directly connected, can also be indirectly connected with by intermediate medium, it can
To be the interaction relationship of connection or two elements inside two elements, unless otherwise restricted clearly.For ability
For the those of ordinary skill in domain, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
During crude oil production, the position of detection underground reservoir is needed first, drills out well to underground on ground later
Pipe, the bottom end of well casing is connected to oil reservoirs；Oil pipe is threaded through in well casing, the bottom end of oil pipe is connected to oil reservoirs, later in oil
Production tree is arranged in the top of pipe, is connected to the bottom end of production tree with the top of oil pipe, recovers the oil to input the crude oil in oil pipe
Tree.When carrying out crude oil production, the bottom end of sucker rod need to be connect with oil pump, oil pump and sucker rod are threaded through oil pipe later
It is interior；Pumping unit is provided on ground, the top of sucker rod is connect with pumping unit, and pumping unit can drive sucker rod to move up and down,
And then operation of oil pump is driven, make oil pump by the crude oil input oil pipe in oil reservoirs, exported crude oil by production tree, to realize
Crude oil production.
Wherein, oil pipe is generally cast iron pipe or steel pipe, and oil pipe generally comprises multiple connecting tubes, one end of each connecting tube
It is formed with external screw thread, the other end is formed with internal screw thread, the screw-internal thread fit on the external screw thread of previous connecting tube and latter connecting tube；
Or the external screw thread in the internal screw thread of previous connecting tube and latter connecting tube cooperates, and all connecting tubes are in turn connected into oil
Pipe.In addition it is set up between oil pipe and the side wall of well casing and is equipped with packer, to guarantee the leakproofness between oil pipe and well casing.
Production tree is a kind of control head, and the bottom end of production tree is connected to oil pipe, so that the crude oil in oil pipe can be with
Into in production tree；It is provided with multiple flowlines on production tree, production valve is provided on each flowline, it is fuel-displaced to control
The on-off of pipe；Flowline can be connected to pipeline road or oil storage tank, and the crude oil in production tree is input to pipeline road
Perhaps crude oil is conveyed or is stored in oil storage tank, and then realize crude oil production.
Sucker rod is generally made of the high-carbon steel of chrome-faced, to guarantee that sucker rod has preferable tensile strength；It recovers the oil
The top of tree is provided with port, and sucker rod can be protruded by the port of production tree and be extended to the bottom of oil pipe；The bottom of sucker rod
End is connect with oil pump, with by sucker rod driving operation of oil pump, and then in the crude oil input oil pipe in oil reservoirs and will drive oil
Crude oil in pipe enters production tree.
Oil pump is generally made of piston and the check valve being arranged on piston, between the outer wall of piston and the inner wall of oil pipe
It is connected by sealing ring, when sucker rod drawing piston is moved upwards along the axis of oil pipe, check valve is in off state, at this time
The crude oil of upper piston area can move upwards under the driving of piston, and then be flowed out by production tree；The original of piston lower portion at the same time
Oil pressure reduces, and the crude oil in oil reservoirs enters the lower part of piston；When the piston is moving down, the check valve on piston is in and leads
Logical state, the crude oil of piston lower portion is flowed into the top of piston through check valve at this time；Constantly up and down by sucker rod
Reciprocating motion, crude oil can be made constantly to be flowed out by production tree.
Pumping unit generally comprises motor, rack, turns beam, weight linear meter and connecting rod composition, the main shaft and counterweight of motor
The axis of bar is vertical and is sequentially connected with one end of weight linear meter, so that weight linear meter can be rotated around the axis of motor；Weight linear meter
The other end and connecting rod one end it is hinged, the other end of connecting rod and the rear end for turning beam are hinged；Rack is set up on the ground, turns beam
Middle part is rotatably connect with rack, and the front end for turning beam is connect with sucker rod.When the electro-motor is turning, energy band turn beam is certain
It is swung in angular range, so that the front end for turning beam drives sucker rod to move back and forth along the axis of oil pipe.
When sucker rod is moved upwards to drive crude oil to be flowed out by production tree, the top of sucker rod by production tree top end
Mouth stretches out, and sucker rod is contacted with air at this time, so that the top of sucker rod is easy to be corroded；Since the length of sucker rod is longer,
Therefore complex, and higher cost is replaced；Therefore often in sucker rod and turn that polished rod is removably arranged between beam, the length of polished rod
Degree is less than the length of sucker rod, and in pumping unit work, sucker rod is always positioned in production tree, in case sucker rod is corroded.For
The crude oil in the recovery process of petroleum inside production tree is avoided to be overflowed by the port on production tree top, it need at the end of production tree
It is provide with sealing cover on mouthful, sealing hole is offered in the middle part of sealing cover, polished rod is threaded through in sealing hole；It can be arranged in sealing hole close
Seal, to enhance the leakproofness between polished rod and sealing hole side wall.When polished rod is corroded or wears and needing replacing, palpus will
Sealing cover is unloaded by port, later drawing polished rod, stretches out the top of sucker rod by port, later by polished rod by sucker rod and
Turn to disassemble on beam, the polished rod more renewed.
Fig. 1 is the axonometric drawing of production tree port sealing device provided in an embodiment of the present invention；Fig. 2 mentions for the embodiment of the present invention
The main view of the production tree port sealing device of confession；The vertical view of Fig. 3 production tree port sealing device provided in an embodiment of the present invention
Figure, please refers to Fig. 1-Fig. 3.Production tree port sealing device provided in this embodiment, comprising: seal body, seal body is by more
A sealing block 10 is constituted；Multiple sealing blocks 10 are for setting to be between sucker rod 20 and production tree and multiple sealing blocks 10 are along pumping
The outer peripheral surface of beam hanger 20 is arranged radially, so that the lateral surface of multiple sealing blocks 10 is abutted with the port inner wall of production tree, it is more
The medial surface of a sealing block 10 is abutted with the outer surface of sucker rod 20.
Specifically, the present embodiment to the material of sealing block 10 with no restrictions, such as: sealing block 10 can be by iron, copper, aluminium etc.
The metal block that metal material is constituted, or the nonmetal block being made of non-metallic materials such as rubber, plastics.
Specifically, the present embodiment to the shape of seal body with no restrictions, as long as guaranteeing in sealing block 10 along sucker rod 20
After outer peripheral surface is arranged radially, meeting forms the mating surface for supporting port inner wall in the outside of seal body；Such as: sealing
Ontology can be in the form of a column, and the cross sectional shape of seal body and the cross sectional shape of port are identical, and seal body is arranged in port
Afterwards, mating surface can be adjacent to the inner wall of port, in case crude oil between seal body and port by overflowing；In addition, seal body is also
It can be in other irregular shapes.
The present embodiment to the shape of sealing block 10 with no restrictions, if after guaranteeing that multiple sealing blocks 10 form seal bodies,
The inner wall of port is supported in the outside of seal body, is abutted in the inside of seal body with the surface of sucker rod 20, i.e., each sealing
The inside of block 10 forms a matching hole, and sucker rod 20 can be accommodated in matching hole.For ease of description, with seal body
For cylindrical, seal body can be also designed to other shapes by certain those skilled in the art.Correspondingly, sealing block 10
Be fan-shaped cylinder in section, fan-shaped central angle can according to the quantitative design of sealing block 10, such as: when sealing block 10 is two
When a, fan-shaped central angle is 180 °；When sealing block 10 is three, fan-shaped central angle is 120 °；Certainly, each sealing block 10
Section central angle can also be different.When multiple sealing blocks 10 form seal body, multiple sealing blocks 10 can form one
Complete cylindrical body.
It preferably, can be in the outer of each sealing block 10 in order to enhance the sealing performance between mating surface and port side wall
Side, i.e. adhesive seal layer on the side of composition mating surface；Alternatively, it is also possible to form the side of mating surface on each sealing block 10
On be formed with sealing flange；After forming seal body, sealant or sealing flange on each sealing block 10 surround sealing shroud
Cylinder or sealing ring.It is further preferred that the sealant or sealing flange on each sealing block 10 can be multiple, Duo Gemi
Sealing or sealing flange are arranged along the axially spaced-apart of sucker rod 20, close between mating surface and port side wall to further enhance
Feng Xing.Sealant and sealing flange can be made of rubber.
Specifically, the cross sectional shape of the matching hole formed on the inside of each sealing block 10 is identical as the cross sectional shape of sucker rod 20,
So that when sealing block 10 surrounds seal body, the side wall of matching hole can be adjacent to the outer wall of sucker rod 20, to guarantee sealing originally
Leakproofness between body and sucker rod 20.
Preferably, it in order to enhance the leakproofness between matching hole and sucker rod 20, can be used in the inside of each sealing block 10
In composition matching hole side wall on be laid with rubber layer；Or rubber is set on the side wall that each sealing block 10 is used to form matching hole
Glue flange；When multiple sealing blocks 10 form seal body, multiple rubber layers form a rubber bush or multiple rubber flanges
Form a rubber ring；The inner wall of rubber sleeve or rubber ring is contacted with sucker rod 20, the outer wall and sealing block of rubber sleeve or rubber ring
10 contacts.It is further preferred that rubber layer or rubber flange on each sealing block 10 can be it is multiple, multiple rubber layers or
Rubber flange is arranged along the axis interval of matching hole, to further enhance the leakproofness between seal body and sucker rod 20.
Specifically, the top of sucker rod 20 has annular flange, is arranged often in the lower part of annular flange in replacement polished rod
Limiting device, to prevent sucker rod 20 under the effect of gravity to production tree internal motion.The present embodiment is to limiting device
Specific structure with no restrictions, as long as sucker rod 20 can be prevented to move down, those skilled in the art can be according to existing
Field situation reasonably selects limiting device；Such as: limiting device may include tripod, the top of tripod be provided with fixed plate and
Movable plate, fixed plate are fixed on the top of tripod, it is mobile on be fixed with driving nut, tripod top only turn with driving
It is bolted, driving bolt and driving nut cooperation；Movable plate edge can be driven towards fixed plate by torsion driving bolt
Direction or mobile to the direction away from fixed plate；So that when pulling out the top of sucker rod 20 by port, torsion drives spiral shell
Bolt, and then keep movable plate mobile to fixed plate, until movable plate and fixed plate clamp sucker rod 20, and annular flange position
In the top of fixing plate and moving plate, and then sucker rod 20 is prevented to move into production tree；In addition in movable plate and can also consolidate
Semicircular groove is respectively offered on fixed board, when movable plate and fixed plate clamp sucker rod 20, two semicircular recessed
Slot forms a round hole, and sucker rod 20 is accommodated in round hole, and the radius of round hole is less than the radius of annular flange.In addition, limit
Position device also may include crane, will be by crane drawing sucker rod 20, with resistance after sucker rod 20 is stretched out by the port of production tree
Only sucker rod 20 is to moving inside production tree.
The use process of production tree port sealing device provided in this embodiment are as follows: after oil exploitation for a period of time, light
When bar is needed replacing because being corroded, sealing cover need to be unloaded by the port of production tree, pass through drawing polished rod band later
Dynamic sucker rod 20 moves upwards, and stretches out the top of sucker rod 20 by port；Sucker rod 20 is carried out by limiting device
Limit, to prevent sucker rod 20 from moving downward；Each sealing block 10 is arranged radially along 20 outer peripheral surface of sucker rod later, with group
At seal body, seal body is plugged in port, to be closed to production tree port；By polished rod by being unloaded on sucker rod 20
Under, and it connect new polished rod and the top of sucker rod 20；Seal body is taken out by the port of production tree later, makes limiting device
The limit to sucker rod 20 is released, and then moves new polished rod and sucker rod 20 downwardly together, when the top of sucker rod 20 enters
To after production tree inside, sealing cover is located to the outside of port, to complete the operation of replacement polished rod.
Production tree port sealing device provided in this embodiment, by multiple sealing blocks 10 along 20 outer peripheral surface of sucker rod in putting
Shape arrangement is penetrated, so that the lateral surface of multiple sealing blocks 10 is abutted with production tree port inner wall, while the inside of multiple sealing blocks 10
Face is abutted with the outer surface of sucker rod 20；It can be in radiation along 20 outer peripheral surface of sucker rod by multiple sealing blocks 10 when replacing polished rod
After shape arrangement and formation seal body, seal body is plugged in port, seal body can prevent the oil gas in production tree
By overflowing between port and sucker rod 20, well control safety risk, pollution environment and energy waste are avoided.
Specifically, the area of section on seal body top is greater than the area of section of seal body bottom end, the top of seal body
End section area is greater than the area of section of port.In order to avoid seal body is fallen to inside production tree by port, and then influence to recover the oil
Tree works normally.
Preferably, seal body can be in rotary table or prism-frustum-shaped, and the side of seal body is and supports with port inner wall at this time
The mating surface connect can be by the top of pressing seal body, to increase sealing originally after seal body is threaded through in port
Pressure between outside and port inner wall, and then enhance the sealing performance between seal body and port.In addition, sealing is originally
Body also may include seal section and support section, seal section and support that section is cylindrical, and the diameter of seal section is less than and supports section
Diameter, mating surface is in the lateral surface of seal section；Seal section is inserted into the port of production tree, close to carry out to port
Envelope, supports section and supports in the upper end of port, to prevent seal body from falling into production tree.
Fig. 4 is the installation in production tree port sealing device provided in an embodiment of the present invention between supporting member and annular flange
Schematic diagram, referring to figure 4..Preferably, the top of seal body has the annular flange 201 for supporting 20 top of sucker rod
Supporting member 30.To prevent sucker rod 20 to moving inside production tree, avoids in addition setting limiting device and sucker rod 20 is carried out
Limit, structure are simple and easy to operate；Under thering is the pressure of crude oil to act in the gravity and oil pipe of sucker rod 20 itself, ring
Shape flange 201 can support downwards seal body, to enhance the leakproofness between seal body and port；Without in addition pressing means of press seals
Ontology.
It is further preferred that supporting member 30 may include the plane formed on each 10 top of sealing block, when multiple sealings
When block 10 forms seal body, the plane on multiple 10 tops of sealing block forms support surface；The middle part of support surface has a card hole, card
The diameter in hole is greater than the diameter of sucker rod 20 and is less than the diameter of 20 top annular flange 201 of sucker rod；So that in seal body
After being threaded through in production tree port, the annular flange 201 on 20 top of sucker rod can be fastened in card hole, and be located at support surface
Top is conveniently replaceable polished rod to prevent sucker rod 20 from moving downward.In addition, supporting member 30 can also be for by welding
Be fixed on each 10 top of sealing block supports block, or to support block integrally formed with sealing block 10 by way of casting；When
After multiple sealing blocks 10 form seal body, multiple outsides supported block and be folded in sucker rod 20, and it is located at annular flange 201
Lower part, multiple blocks of supporting can support annular flange 201, to prevent sucker rod 20 from moving downward.
Preferably, supporting member 30 is removably connect with seal body.It is only needed after supporting member 30 is damaged by pressure by annular flange
Supporting member 30 is replaced, entire seal body that no replacement is required has saved cost.
Specifically, supporting member 30 can be connect by clamping or bolted mode with seal body.Work as supporting member
30 when being an entirety, can offer " U "-shaped card slot on supporting member 30, will after seal body is threaded through in port
Supporting member 30 is fastened on sucker rod 20 in card slot, at this time supporting member along will move along the axis direction perpendicular to sucker rod 20
30 between annular flange 201 and the top of seal body, prevents sucker rod 20 to moving inside production tree to realize.
With further reference to Fig. 4.It is further preferred that being provided with lifting piece 301 on supporting member 30.By manipulating lifting piece
301 make supporting member 30 between seal body and annular flange；In order to avoid staff holds supporting member 30, supported in annular flange
The hand of staff is clipped under annular flange when contact head part 30, and then the hand of staff is damaged.It is preferred that
Ground, lifting piece 301 can be bolted that the mode perhaps welded is connect with supporting member 30 or lifting piece 301 passes through casting
The mode and supporting member 30 made are integrally formed；In addition lifting piece 301 can also be connect by hinged mode with supporting member 30.
Specifically, sealing block 10 is three.In order to avoid the quantity of sealing block 10 excessively cause it is difficult to install.
Fig. 5 is the scheme of installation in production tree port sealing device provided in an embodiment of the present invention between each sealing block；
Fig. 6 is the structural schematic diagram of sealing block in production tree port sealing device provided in an embodiment of the present invention, referring to figure 5. and Fig. 6.
Specifically, two adjacent sides of two neighboring sealing block 10 are provided with protrusion 101 and recessed portion 102, and protrusion 101 is used
In in the recessed portion 102 being accommodated on adjacent seals block 10.The contact area between sealing block 10 is increased, to enhance sealing block
Leakproofness between 10.
The present embodiment to the shape of protrusion 101 and recessed portion 102 with no restrictions, as long as guaranteeing that protrusion 101 can hold
It sets in the recessed portion 102 on the side being matched therewith；Such as: protrusion 101 can be hemispherical, accordingly and its
Spherical groove identical with 101 radius of protrusion is formed on the side of cooperation；Or protrusion 101 is in other irregular shapes
Shape, corresponding recessed portion 102 are groove identical with 101 shape of protrusion.Protrusion 101 and recess on each sealing block 10
It portion 102 can be to be multiple, to further enhance the sealing performance between sealing block 10.It is further preferred that adjacent seals block 10
On the shape of protrusion 101 on the two sides worked in coordination can be different, the recess on two sides worked in coordination accordingly
The shape in portion 102 is not also identical.
With continued reference to Fig. 6.Preferably, protrusion 101 is in the form of a column, and the axis of protrusion 101 is used for along perpendicular to sucker rod
Axis setting.When protrusion 101 accommodates in the recessed portion 102 being on the side of its cooperation, sealing block 10 can be prevented
Between moved along the axis direction for being parallel to sucker rod；In order to avoid during sealing block 10 is threaded through in port, because of sealing block
It is moved between 10 along the axis direction for being parallel to sucker rod, the leakproofness between caused sealing block 10 is insufficient.Further preferably
Ground, protrusion 101 can cylindrical, quadrangular shapes etc..
With continued reference to Fig. 1.Specifically, the top of each sealing block 10 sets and is equipped with engaging lug 103, each engaging lug 103
On offer lifting eye 104.It can be by 104 drawing sealing block 10 of lifting eye, and then by seal body by the port of production tree
Interior pull-out, it is easy to operate.Such as: it, can be by the way that the suspension hook of crane be threaded through when by taking out seal body in production tree port
In lifting hole(eyelet), crane driving suspension hook is moved upwards, and then by sealing block 10 by pulling out in the port of production tree.
With continued reference to Fig. 1.Production tree port sealing device provided in this embodiment further includes lifting rod 105, lifting rod
105 one end has a hanging ring；Lifting rod 105 be it is multiple, the hanging ring on each lifting rod 105 is threaded through a lifting eye 104
It is interior.Sealing block 10 can be lifted by drawing lifting rod 105, it is easy to operate.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of production tree port sealing device characterized by comprising seal body, the seal body is by multiple sealings
Block is constituted；Multiple sealing blocks are for setting to be between sucker rod and production tree and multiple sealing blocks are along the oil pumping
The outer peripheral surface of bar is arranged radially, so that the lateral surface of multiple sealing blocks is abutted with the port inner wall of the production tree,
The medial surface of multiple sealing blocks is abutted with the outer surface of the sucker rod.
2. production tree port sealing device according to claim 1, which is characterized in that the section on the seal body top
Area is greater than the area of section of the seal body bottom end, and the tip section area of the seal body is greater than cutting for the port
Face area.
3. production tree port sealing device according to claim 2, which is characterized in that the top of the seal body is arranged
There is the supporting member of the annular flange for supporting the sucker rod top.
4. production tree port sealing device according to claim 3, which is characterized in that the supporting member and the sealing are originally
Body removably connects.
5. production tree port sealing device according to claim 4, which is characterized in that be provided with lifting on the supporting member
Part.
6. production tree port sealing device described in -5 any one according to claim 1, which is characterized in that the sealing block is
Three.
7. production tree port sealing device described in -5 any one according to claim 1, which is characterized in that two neighboring described
Protrusion and recessed portion are provided on two adjacent sides of sealing block, the protrusion is for being accommodated in the adjacent sealing
In the recessed portion on block.
8. production tree port sealing device according to claim 7, which is characterized in that the protrusion is in the form of a column, described
The axis of protrusion is used to be arranged along the axis perpendicular to the sucker rod.
9. production tree port sealing device described in -5 any one according to claim 1, which is characterized in that each sealing
The top of block is provided with engaging lug, offers lifting eye on each engaging lug.
10. production tree port sealing device according to claim 9, which is characterized in that it further include lifting rod, the lifting
One end of bar has a hanging ring；The lifting rod be it is multiple, the hanging ring on each lifting rod is threaded through described in one
In lifting eye.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810026388.0A CN110029958A (en) | 2018-01-11 | 2018-01-11 | Production tree port sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810026388.0A CN110029958A (en) | 2018-01-11 | 2018-01-11 | Production tree port sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110029958A true CN110029958A (en) | 2019-07-19 |
Family
ID=67234241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810026388.0A Pending CN110029958A (en) | 2018-01-11 | 2018-01-11 | Production tree port sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110029958A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114961660A (en) * | 2022-07-21 | 2022-08-30 | 山东龙兴石油设备有限公司 | Oil exploitation method and device |
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