CN109838215A - Packer (CN) - Google Patents
Packer (CN) Download PDFInfo
- Publication number
- CN109838215A CN109838215A CN201711203744.3A CN201711203744A CN109838215A CN 109838215 A CN109838215 A CN 109838215A CN 201711203744 A CN201711203744 A CN 201711203744A CN 109838215 A CN109838215 A CN 109838215A
- Authority
- CN
- China
- Prior art keywords
- leather cup
- packer
- leather
- central tube
- sleeve
- 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.)
- Pending
Links
- 239000010985 leather Substances 0.000 claims abstract description 147
- 239000013013 elastic material Substances 0.000 claims abstract description 7
- 238000005520 cutting process Methods 0.000 claims description 27
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 14
- 239000003292 glue Substances 0.000 claims description 3
- 238000012856 packing Methods 0.000 abstract description 4
- 239000004576 sand Substances 0.000 description 19
- 238000009825 accumulation Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 239000003129 oil well Substances 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000003825 pressing Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Food-Manufacturing Devices (AREA)
Abstract
The invention relates to a packer, and belongs to the technical field of machinery. The packer comprises a first leather cup, a second leather cup, an outer central pipe, a leather cup seat and a leather cup press cap, wherein the first leather cup, the second leather cup, the leather cup seat and the leather cup press cap are of an annular structure, the second leather cup, the leather cup seat, the first leather cup and the leather cup press cap are sequentially sleeved outside the outer central pipe, the first leather cup protrudes out of the leather cup seat and the leather cup press cap, the second leather cup protrudes out of the leather cup seat, and the first leather cup and the second leather cup are made of elastic materials; when the packer is positioned in a pipe column to be packed, the first packing cup and the second packing cup are both in contact with the inner wall of the pipe column. The invention solves the problem that the exploitation efficiency of the unconsolidated sandstone reservoir is influenced because the packer is difficult to salvage. The invention is used for exploiting oil fields.
Description
Technical field
The present invention relates to field of mechanical technique, in particular to a kind of packer.
Background technique
Loose sand oil accumulation is a kind of oil reservoir generally existing in oil field.When exploiting loose sand oil accumulation, it usually needs
Using sand control pipe is arrived, sand control pipe generally includes packer, oil pipe and screen casing, and packer generally includes: packer body,
And the slips on packer body and glue bucket are set.
Before exploiting loose sand oil accumulation, it usually needs the tripping in sand control pipe in oil well.Make a reservation for when tubing string reaches in well
It behind position, needs to make packer set, the slips that can control at this time in packer is expanded with squeezing bushing inner wall, thus will envelope
It is fixed in casing every device main body, and controls the expansion of the glue bucket in packer and squeezing bushing inner wall, thus by being located in casing
It more than packer the first space and is effectively isolated positioned at packer second space below.It is further to note that due to
Packer body is usually tubular structure, therefore packer body can be connected to first space and second space.It is dredged in exploitation
When loose sandstone oil reservoir, petroleum can pass through screen casing and enter inside sand control pipe, and enter the by the channel inside sand control pipe
One space.When after sand control pipe failure or needing to change layer operation, sand control pipe can be salvaged to ground.
Since extruding force of the slips to internal surface of sleeve pipe is larger, and the material of slips is steel, therefore slips and internal surface of sleeve pipe
Frictional force it is larger, to be unfavorable for the salvaging of packer, affect the production efficiency of loose sand oil accumulation.
Summary of the invention
The embodiment of the invention provides a kind of packers.Can solve influences because of the more difficult salvaging of packer in the related technology
The problem of production efficiency of loose sand oil accumulation, the technical solution is as follows:
In a first aspect, provide a kind of packer, the packer include: the first leather cup, the second leather cup, exterior central tube,
Pedestal of leather bowl and leather cup pressure-pad, first leather cup, second leather cup, the pedestal of leather bowl and the leather cup pressure cap are ring junction
Structure, second leather cup, the pedestal of leather bowl, first leather cup and the leather cup pressure-pad are successively socketed in the exterior central tube
Outside, first leather cup protrudes from the pedestal of leather bowl and the leather cup pressure-pad, and second leather cup protrudes from the pedestal of leather bowl, institute
The material of the material and second leather cup of stating the first leather cup is elastic material；It is located at tubing string to be insulated in the packer
When interior, first leather cup and second leather cup are contacted with the inner wall of the tubing string.
Optionally, the packer further include: sleeve, the sleeve are socketed in outside the exterior central tube, and are located at described
The one end of second leather cup far from the pedestal of leather bowl, second leather cup protrude from the sleeve.
Optionally, the bowl of first leather cup is arranged along far from second leather cup, and the bowl of second leather cup is along separate
The first leather cup setting.
Optionally, the packer further include: inner central tube and fixation kit, the inner central tube cover at the outer center
In pipe, and there are annular spaces between the exterior central tube, and the fixation kit is simultaneously with the sleeve far from described second
One end of leather cup and the connection of one end of the inner central tube；The sleeve protrudes from described far from second leather cup one end
Exterior central tube, and be provided with and be connected to the outer first through hole with the annular space of the sleeve.
Optionally, the fixation kit includes: top connection, sliding sleeve, lock tube, closing piece and shear pin, the top connection, the cunning
Set and the lock tube are ring structure, and the lock tube is socketed in outside the one end of the sleeve far from second leather cup；It is described
Top connection covers in the lock tube, and is socketed in outside one end of the inner central tube, is provided with axis on the side wall of the top connection
For line to inclined second through-hole of the inner central tube, the inner wall of the lock tube is provided with the first clamping groove, and the closing piece passes through institute
The second through-hole is stated, and one end of the closing piece is located in first clamping groove；
The side wall of the top connection is additionally provided with third through-hole, and the side wall of the sliding sleeve is provided with the second clamping groove, described
Shear pin passes through the third through-hole, and one end of the shear pin is located in second clamping groove；
The outer wall of the sliding sleeve is provided with accommodating groove, and the accommodating groove is not connected to second through-hole, the top connection
Inner wall close to described inner central tube one end is provided with clamping platform；When shear pin fracture, the sliding sleeve is to the interior center
Pipe sliding, so that the sliding sleeve is contacted close to one end of the inner central tube with the clamping platform, and the accommodating groove and institute
The connection of the second through-hole is stated, the other end of the closing piece slides into the accommodating groove, and one end of the closing piece is detached from first clamping
Slot.
Optionally, the packer further include: the first cushion rubber and the second cushion rubber, first cushion rubber and second cushion rubber
It is socketed in outside the sliding sleeve both ends respectively.
Optionally, the axis collinear of the axis of the top connection, the axis of the sliding sleeve and the lock tube, and it is described it is interior in
The axis collinear of the axis of heart pipe, the axis of the exterior central tube and the pedestal of leather bowl.
Optionally, the packer further include: clamping joint, left-hand thread ring and draw cutting ferrule,
The clamping joint and the cutting ferrule that draws are ring structure, and one end of the clamping joint is socketed in the leather cup pressure-pad
In one end far from first leather cup, the other end of the clamping joint be socketed in it is described draw in cutting ferrule, the left-hand thread ring clamping
Draw in cutting ferrule described, and another end in contact with the clamping joint；
The described one end of cutting ferrule far from the clamping joint of drawing is first end, the described one end of left-hand thread ring far from the clamping joint
For second end, the first end is greater than the second end at a distance from the clamping joint at a distance from the clamping joint；It is described to draw
To draw cutting ferrule tilted to described for the bottom surface of the first end of cutting ferrule.
Optionally, the structure that any two are socketed in the packer is connected through a screw thread, and for connecting the lock
The screw thread of set and the sleeve is the first screw thread, and the screw thread in the packer in addition to first screw thread is the second screw thread,
First screw thread is opposite with the direction of rotation of second screw thread.
Optionally, the material of first leather cup and second leather cup is rubber.
The technical solution that the embodiment of the present invention provides can include the following benefits: by packer from the set in well
During being salvaged in pipe, due on packer the first leather cup and the second leather cup contacted with the inner wall of casing, and material is
First leather cup of elastic material is smaller to the extruding force of internal surface of sleeve pipe, therefore friction is small for packer and internal surface of sleeve pipe, into
And the salvaging difficulty of packer is reduced, avoid the production efficiency that loose sand oil accumulation is influenced because of the more difficult salvaging of packer.
It should be understood that the above general description and the following detailed description are merely exemplary, this can not be limited
Invention.
Detailed description of the invention
In order to illustrate more clearly of the embodiment of the present invention, attached drawing needed in embodiment description will be made below
Simply introduce, it should be apparent that, drawings in the following description are only some embodiments of the invention, common for this field
For technical staff, without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram of packer provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of another packer provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of another packer provided in an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of another packer provided in an embodiment of the present invention；
Fig. 5 is the structural schematic diagram of another packer provided in an embodiment of the present invention.
The drawings herein are incorporated into the specification and forms part of this specification, and shows and meets implementation of the invention
Example, and be used to explain the principle of the present invention together with specification.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention make into
It is described in detail to one step, it is clear that the described embodiments are only some of the embodiments of the present invention, rather than whole implementation
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
All other embodiment, shall fall within the protection scope of the present invention.
Loose sand oil accumulation is a kind of oil reservoir generally existing in oil field, when exploiting loose sand oil accumulation, it usually needs
Using arrive packer.Existing packer itself will be fixed on the inner wall of oil well inner sleeve usually using slips, due to slips
It is larger to the extruding force of internal surface of sleeve pipe, and the material of slips is steel, therefore the frictional force of slips and internal surface of sleeve pipe is larger, thus
It is unfavorable for the salvaging of packer, affects the production efficiency of loose sand oil accumulation.The embodiment of the invention provides a kind of packer,
The packer avoids the production efficiency that loose sand oil accumulation is influenced because of the more difficult salvaging of packer without using slips.
Fig. 1 is a kind of structural schematic diagram of packer provided in an embodiment of the present invention, and Fig. 1 shows packer in its length
Spend the partial cross section on direction.As shown in Figure 1, the packer includes: the first leather cup 10, the second leather cup 60, exterior central tube 20, skin
Bowl seat 30 and leather cup pressure-pad 40, the first leather cup 10, the second leather cup 60, pedestal of leather bowl 30 and leather cup pressure cap 40 are ring structure, and
Second leather cup 60, pedestal of leather bowl 30, the first leather cup 10 and leather cup pressure-pad 40 are successively socketed in outside exterior central tube 20.First leather cup 10 is convex
For pedestal of leather bowl 30 and leather cup pressure-pad 40, the second leather cup 60 protrudes from pedestal of leather bowl 30, the material and the second leather cup of the first leather cup 40
60 material is elastic material.When packer is interior positioned at the tubing string (such as casing) wait insulate, the first leather cup 40 and the second skin
Bowl 60 can be contacted with the inner wall of the tubing string, so that the packer is empty by be located at packer or more in the tubing string first
Between and effectively insulate positioned at packer second space below.
When the packer is located in casing, since the first leather cup 10 protrudes from other component in packer, by
The contact of the inner wall of one leather cup 10 and casing, the first leather cup 10 can completely cut off the first space and packing between packer and well head
Second space between device and shaft bottom.
In conclusion in packer provided in an embodiment of the present invention, what packer was salvaged from the casing in well
In the process, due on packer the first leather cup and the second leather cup contacted with the inner wall of casing, and material is elastic material
First leather cup and the second leather cup are smaller to the extruding force of internal surface of sleeve pipe, therefore friction is small for packer and internal surface of sleeve pipe, into
And the salvaging difficulty of packer is reduced, avoid the production efficiency that loose sand oil accumulation is influenced because of the more difficult salvaging of packer.
Fig. 2 is the structural schematic diagram of another packer provided in an embodiment of the present invention, as shown in Fig. 2, on the basis of Fig. 1
On, which can also include: sleeve 70, and sleeve 70 is socketed in outside exterior central tube 20, and it is separate to be respectively positioned on the second leather cup 60
One end of pedestal of leather bowl 30, the second leather cup 60 protrude from sleeve 70.
Optionally, the bowl of first leather cup 10 is arranged along 101 far from the second leather cup 20 in packer shown in Fig. 2, the second skin
The bowl of bowl 60 is arranged along 601 far from the first leather cup 10.The first space far from the first leather cup and remote can effectively be completely cut off in this way
Second space from the second leather cup.
Fig. 3 is the structural schematic diagram of another packer provided in an embodiment of the present invention, as shown in figure 3, on the basis of Fig. 2
On, which can also include: inner central tube 80 and fixation kit 90.Wherein, 80 sets of inner central tube in exterior central tube 20,
And there are annular space A between exterior central tube 20.The one end with sleeve 70 far from the second leather cup 60 simultaneously of fixation kit 90, with
And one end connection of inner central tube 80.Sleeve 70 protrudes from exterior central tube 20 far from 60 one end of the second leather cup, and is provided with connection
Sleeve 70 is outer and the first through hole 701 of annular space A.
During toward shaft bottom decentralization packer, if packer is blocked close to the one end in shaft bottom by the argillaceous sandstone in well
When, staff can pressurize into well, keep packer logical by first on sleeve 70 close to the liquid of well head one end
Hole 701 enters annular space A, and compact annular space A can increase the pressure of liquid, to make annular space A close to shaft bottom
One end go out liquid so that the liquid gone out breaks up argillaceous sandstone.
With continued reference to FIG. 3, fixation kit 90 may include: top connection 901, sliding sleeve 902, lock tube 903,904 and of closing piece
Shear pin 905.Wherein, top connection 901, sliding sleeve 902 and lock tube 903 are ring structure, and lock tube 903 is socketed in sleeve 70 far from
Outside one end of two leather cups 20.901 sets of top connection in lock tube 903, and are socketed in outside one end of inner central tube 80.Top connection 901
Side wall on be provided with axis to 80 inclined second through-hole (being not shown in Fig. 3) of inner central tube, the inner wall of lock tube 903 is provided with
First clamping groove 9031, closing piece 904 passes through the second through-hole, and one end of closing piece 904 is located in the first clamping groove 9031.Top connection
901 side wall is additionally provided with third through-hole (being not shown in Fig. 3), and the side wall of sliding sleeve 902 is provided with the second clamping groove (in Fig. 3 not
Show), shear pin 905 passes through third through-hole, and one end of shear pin 905 is located in the second clamping groove.The outer wall of sliding sleeve 902 is provided with
Accommodating groove 9021, accommodating groove 9021 are not connected to the second through-hole, and inner wall of the top connection 901 close to 80 one end of inner central tube is provided with
Clamping platform 9012.
When shear pin 905 is broken, sliding sleeve 902 is slided to inner central tube 80, so that sliding sleeve 902 is close to inner central tube 80
One end is contacted with clamping platform 9012, and accommodating groove 9021 is connected to the second through-hole, and the other end of closing piece 904 slides into accommodating groove
9021, and one end of closing piece 904 is detached from the first clamping groove 9031.
Fig. 4 is the structural schematic diagram of another packer provided in an embodiment of the present invention, as shown in figure 4, on the basis of Fig. 3
On, packer further include: the first cushion rubber 110 and the second cushion rubber 120, and the first cushion rubber 110 and the second cushion rubber 120 are socketed in respectively
Outside 902 both ends of sliding sleeve.When needing to cut shear pin, it will usually be seated in steel ball (in Fig. 4 not close to one end of well head in sliding sleeve 902
Show), and pressurizeed by way of liquid pressing to steel ball.During this pressurization, due to the first cushion rubber 110 and second
Cushion rubber 120 can seal the space between sliding sleeve 902 and top connection 901, therefore, avoid liquid by sliding sleeve 902 and above connect
Flow out and influence the effect of pressurization in space between first 901.
Optionally, the axis of the axis of the top connection 901 of packer shown in Fig. 3, the axis of sliding sleeve 902 and lock tube 903
Collinearly, and the axis collinear of the axis of inner central tube 80, the axis of exterior central tube 20 and pedestal of leather bowl 30.
Fig. 5 is the structural schematic diagram of another packer provided in an embodiment of the present invention, as shown in figure 5, on the basis of Fig. 4
On, packer further include: clamping joint 130, left-hand thread ring 140 and draw cutting ferrule 150.Clamping joint 130 and to draw cutting ferrule 150 be ring junction
Structure, one end of clamping joint 130 are socketed in the one end of leather cup pressure-pad 40 far from the first leather cup 10, another end cap of clamping joint 130
It connects and is drawing in cutting ferrule 150.Left-hand thread ring 140, which is connected to, to be drawn in cutting ferrule 150, and another end in contact with clamping joint 130.Draw cutting ferrule
150 one end far from clamping joint 130 be first end, left-hand thread ring 140 far from clamping joint 130 one end be second end, first end with
The distance L1 of clamping joint 130 is greater than second end and 130 distance L2 of clamping joint, and draw cutting ferrule 150 first end bottom surface D to drawing
Cutting ferrule 150 is tilted.
After packer shown in fig. 5 is lowered into shaft bottom, it can pressurize to one end of the close well head of packer.It is pressurizeing
During, the inclined bottom surface for drawing the first end of cutting ferrule 150 can guide the first oil pipe entrance positioned at shaft bottom to draw in cutting ferrule
And it is clamped with left-hand thread ring 140.
Optionally, the structure that any two are socketed in packer shown in fig. 5 is connected through a screw thread, and for connecting lock
The screw thread of set 903 and sleeve 70 is the first screw thread, and the screw thread in packer in addition to the first screw thread is the second screw thread, the first screw thread
It is opposite with the direction of rotation of the second screw thread.
Exemplary, top connection 901 and inner central tube 80 are right-hand thread threaded connection, and sleeve 70 and exterior central tube 20 are right-hand thread spiral shell
Line connection, pedestal of leather bowl 30 and exterior central tube 20 are right-hand thread threaded connection, and leather cup pressure-pad 40 is connected with 20 right-handed thread of exterior central tube,
Clamping joint 130 is connected with 40 right-handed thread of leather cup pressure-pad, and clamping joint 130 is connected with 150 right-handed thread of cutting ferrule is drawn, and lock tube 903
It is that left-hand thread is threadedly coupled with sleeve 70.It that is to say, the first screw thread can be left-hand thread screw thread, and the second screw thread can be right-handed thread.
During transferring packer as shown in Figure 5 to shaft bottom, connector 901, sliding sleeve 902 and interior are put on needs
When central tube 80, if occurring above proposing motionless situation after shear pin 905 is not cut or cut, packing can be rotated clockwise at this time
Device, so that the left-hand thread threaded connection pair of lock tube 903 and sleeve 70 loosens in packer, lock tube can be made by continuing rotary packer
903 and sleeve 70 separate.Top connection 901, sliding sleeve 902, inner central tube 80 and lock tube 903 can above be mentioned together at this time.
And since the second screw thread at this time is right-handed thread, other second screw threads in packer in addition to the first screw thread will not loosen.
In practical application, the first screw thread may be right-handed thread, and the second screw thread may be left-hand thread screw thread, and unclamp lock tube 903
This is not construed as limiting with need rotary packer counterclockwise, the embodiment of the present invention when sleeve 70.
Optionally, Fig. 2 to Fig. 5 it is any shown in the material of the first leather cup 10 and the second leather cup 20 in packer can be with
For rubber.
When the packer provided in using the embodiment of the present invention, gauguste cutter should be first passed through the set in oil well by staff
Pipe, and gradually lead to shaft bottom along the inner wall of casing, gauguste cutter can remove the silt in casing in this process, remove
After play out the gauguste cutter.Exemplary, the specification of the gauguste cutter can be that diameter is 116 millimeters and length is 1200 millimeters,
Or diameter is 152 millimeters and length is 1200 millimeters, can according to need the gauguste cutter to select different size in practical application.
Packer should be checked after taking out gauguste cutter, it is ensured that packer is without being connected to for the top connection of packer after damage
Two oil pipes, and will be in packer tripping in casing.Packer can slide to shaft bottom under the effect of gravity, be snapped down in packer
During shaft bottom, the lowering velocity of the second oil pipe control packer can be used, for held stationary in packer decentralization process,
Lowering velocity is not to be exceeded 20 meters per minute.
When packer is close to shaft bottom, need to stop to continue to transfer packer, and using clear water by packer circulation flushing
It is primary to arrive twice.After cleaning, the steel ball that diameter is 42 millimeters can be put into oil well, so that steel ball falls in separator
Lock tube close to one end of well head.Then it can apply 10,000 Ns of (English: kilonewton, abbreviation: KN)~20KN into well
Pressure, enter the first oil pipe positioned at shaft bottom and draw in cutting ferrule and be clamped with the left-hand thread ring drawn in cutting ferrule.It should be noted that
Detecting step can be carried out after applying pressure into well, which can be above to mention packer and detect upper pressure-raising
The size of power.If upper pressure-raising power increases always and pressure value is more than 20KN, illustrate that the first oil pipe and left-hand thread ring are successfully clamped,
If upper pressure-raising power remains unchanged always and pressure value is in 20KN, illustrate that the first oil pipe and left-hand thread ring are clamped not successfully.This
When can continue to pressurize into well, after pressurization repeat above-mentioned detecting step, until the first oil pipe and left-hand thread ring are successfully clamped
Until.
When the packer is located in casing, since the first leather cup and the second leather cup protrude from other component in packer,
Therefore it is contacted by the inner wall of the first leather cup and casing, the first leather cup and the second leather cup can completely cut off the between packer and well head
Second space between one space and packer and shaft bottom.
After the first oil pipe and left-hand thread ring are clamped successfully, the fluid pressure persistently increased can be applied into well, and detect
The pressure that the pressure generates on packer.Packer damages in order to prevent, and the pressure generated by the pressure needs to control 15
Within megapascal.When the shear pin on packer is cut under the effect of the pressure, sliding sleeve to inner central tube slide (namely downwards
Sliding) so that sliding sleeve is contacted close to one end of inner central tube with clamping platform, and accommodating groove is connected to the second through-hole, closing piece
The other end slides into accommodating groove, and one end of closing piece is detached from the first clamping groove.After shear pin cutting, the pressure in well can become moment
Zero, it needs to stop at this time pressing into well, and top connection, inner central tube, sliding sleeve and the steel ball being sitting on sliding sleeve are mentioned together
Producing well.It should be noted that if not occurring pressure during applying the pressure persistently increased into well and suddenly becoming
Zero the case where, then illustrates that shear pin is not cut, can rotate clockwise packer at this time, makes lock tube and sleeve point in packer
From, and top connection, inner central tube, lock tube, sliding sleeve and the steel ball being sitting on sliding sleeve are proposed into oil well together.
After packer, inner central tube, sliding sleeve and the steel ball being sitting on sliding sleeve are proposed oil well, it can be thrown into oil well
Enter oil pump, under the pressure difference effect in the first space and second space that are located at packer both ends, the oil reservoir in shaft bottom is by position
Enter the first oil pipe after the screen casing filtering in shaft bottom, and the first space is entered by the first oil pipe and packer, oil pump is by first
Oil in space is delivered to ground.
In conclusion in packer provided in an embodiment of the present invention, what packer was salvaged from the casing in well
In the process, due on packer the first leather cup and the second leather cup contacted with the inner wall of casing, and material is elastic material
First leather cup and the second leather cup are smaller to the extruding force of internal surface of sleeve pipe, therefore friction is small for packer and internal surface of sleeve pipe,
And then the salvaging difficulty of packer is reduced, avoid the exploitation effect that loose sand oil accumulation is influenced because of the more difficult salvaging of packer
Rate.
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to of the invention its
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the invention, these modifications, purposes or
Person's adaptive change follows general principle of the invention and including the undocumented common knowledge in the art of the present invention
Or conventional techniques.The description and examples are only to be considered as illustrative, and true scope and spirit of the invention are wanted by right
It asks and points out.
It should be understood that the present invention is not limited to the precise structure already described above and shown in the accompanying drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is limited only by the attached claims.
Claims (10)
1. a kind of packer, which is characterized in that the packer includes: the first leather cup, the second leather cup, exterior central tube, pedestal of leather bowl
With leather cup pressure-pad,
First leather cup, second leather cup, the pedestal of leather bowl and the leather cup pressure cap are ring structure, second skin
Bowl, the pedestal of leather bowl, first leather cup and the leather cup pressure-pad are successively socketed in outside the exterior central tube；
First leather cup protrudes from the pedestal of leather bowl and the leather cup pressure-pad, and second leather cup protrudes from the pedestal of leather bowl,
The material of first leather cup and the material of second leather cup are elastic material；It is located at pipe to be insulated in the packer
When in column, first leather cup and second leather cup are contacted with the inner wall of the tubing string.
2. packer according to claim 1, which is characterized in that the packer further include: sleeve,
The sleeve is socketed in outside the exterior central tube, and is located at the described one end of second leather cup far from the pedestal of leather bowl, described
Second leather cup protrudes from the sleeve.
3. packer according to claim 1, which is characterized in that
The bowl of first leather cup is arranged along far from second leather cup, and the bowl of second leather cup is along far from first leather cup
Setting.
4. packer according to claim 2, which is characterized in that the packer further include: inner central tube and fixed group
Part,
The inner central tube covers in the exterior central tube, and there are annular space, the fixations between the exterior central tube
One end connection of component while one end and the inner central tube with the sleeve far from second leather cup；
The sleeve protrudes from the exterior central tube far from second leather cup one end, and is provided with that the connection sleeve is outer and institute
State the first through hole of annular space.
5. packer according to claim 4, which is characterized in that the fixation kit include: top connection, sliding sleeve, lock tube,
Closing piece and shear pin,
The top connection, the sliding sleeve and the lock tube are ring structure, and the lock tube is socketed in the sleeve far from described
Outside one end of second leather cup；The top connection covers in the lock tube, and is socketed in outside one end of the inner central tube, it is described on
Axis is provided on the side wall of connector to inclined second through-hole of the inner central tube, the inner wall of the lock tube is provided with the first card
Access slot, the closing piece passes through second through-hole, and one end of the closing piece is located in first clamping groove；
The side wall of the top connection is additionally provided with third through-hole, and the side wall of the sliding sleeve is provided with the second clamping groove, the shear pin
Across the third through-hole, and one end of the shear pin is located in second clamping groove；
The outer wall of the sliding sleeve is provided with accommodating groove, and the accommodating groove is not connected to second through-hole, and the top connection is close
The inner wall of described inner central tube one end is provided with clamping platform；When shear pin fracture, the sliding sleeve is sliding to the inner central tube
It is dynamic, so that the sliding sleeve is contacted close to one end of the inner central tube with the clamping platform, and the accommodating groove and described the
The connection of two through-holes, the other end of the closing piece slide into the accommodating groove, and one end of the closing piece is detached from first clamping groove.
6. packer according to claim 5, which is characterized in that the packer further include: the first cushion rubber and the second glue
Circle, first cushion rubber and second cushion rubber are socketed in respectively outside the sliding sleeve both ends.
7. packer according to claim 5, which is characterized in that
The axis collinear of the axis of the top connection, the axis of the sliding sleeve and the lock tube, and the axis of the inner central tube,
The axis collinear of the axis of the exterior central tube and the pedestal of leather bowl.
8. packer according to claim 1, which is characterized in that the packer further include: clamping joint, left-hand thread ring and draw
Cutting ferrule,
The clamping joint and the cutting ferrule that draws are ring structure, and it is separate that one end of the clamping joint is socketed in the leather cup pressure-pad
In one end of first leather cup, the other end of the clamping joint be socketed in it is described draw in cutting ferrule, the left-hand thread ring is connected to institute
It states and draws in cutting ferrule, and another end in contact with the clamping joint；
The described one end of cutting ferrule far from the clamping joint of drawing is first end, and the one end of the left-hand thread ring far from the clamping joint is the
Two ends, the first end are greater than the second end at a distance from the clamping joint at a distance from the clamping joint；It is described to draw cutting ferrule
To draw cutting ferrule tilted to described the bottom surface of first end.
9. according to any packer of claim 5 to 8, which is characterized in that
The structure that any two are socketed in the packer is connected through a screw thread, and for connecting the lock tube and the sleeve
Screw thread be the first screw thread, the screw thread in the packer in addition to first screw thread is the second screw thread, first screw thread
It is opposite with the direction of rotation of second screw thread.
10. according to any packer of claim 2 to 8, which is characterized in that
The material of first leather cup and second leather cup is rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711203744.3A CN109838215A (en) | 2017-11-27 | 2017-11-27 | Packer (CN) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711203744.3A CN109838215A (en) | 2017-11-27 | 2017-11-27 | Packer (CN) |
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| Publication Number | Publication Date |
|---|---|
| CN109838215A true CN109838215A (en) | 2019-06-04 |
Family
ID=66880095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711203744.3A Pending CN109838215A (en) | 2017-11-27 | 2017-11-27 | Packer (CN) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109838215A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114482891A (en) * | 2020-10-23 | 2022-05-13 | 中国石油化工股份有限公司 | Friction setting sand prevention pipe column, friction setting packer and method |
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| CN114482891A (en) * | 2020-10-23 | 2022-05-13 | 中国石油化工股份有限公司 | Friction setting sand prevention pipe column, friction setting packer and method |
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