CN203796218U - Packer capable of washing well - Google Patents
Packer capable of washing well Download PDFInfo
- Publication number
- CN203796218U CN203796218U CN201420225553.2U CN201420225553U CN203796218U CN 203796218 U CN203796218 U CN 203796218U CN 201420225553 U CN201420225553 U CN 201420225553U CN 203796218 U CN203796218 U CN 203796218U
- Authority
- CN
- China
- Prior art keywords
- well
- flushing
- sleeve
- packing element
- outside
- 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.)
- Expired - Lifetime
Links
- 238000005406 washing Methods 0.000 title abstract description 9
- 238000012856 packing Methods 0.000 claims abstract description 97
- 238000011010 flushing procedure Methods 0.000 claims description 97
- 210000004907 gland Anatomy 0.000 claims description 37
- 239000010985 leather Substances 0.000 claims description 37
- 238000007789 sealing Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 13
- 125000006850 spacer group Chemical group 0.000 claims description 10
- 238000011001 backwashing Methods 0.000 abstract description 4
- 238000003825 pressing Methods 0.000 abstract description 3
- 238000004891 communication Methods 0.000 abstract 1
- 238000002347 injection Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 238000011084 recovery Methods 0.000 abstract 1
- 238000010008 shearing Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Landscapes
- Sealing Devices (AREA)
Abstract
The utility model relates to the technical field of packers used for oil recovery and water injection of oil fields, in particular to a packer capable of washing a well. The packer capable of washing the well comprises an upper connector, a center pipe, a packing cup assembly, a cylinder sleeve, a rubber sleeve bush, a rubber sleeve assembly, a lower pressing sleeve, a shearing pin, a guide sleeve and a lower connector; the inner side of the lower portion of the upper connector and the outer side of the upper portion of the center pipe are fixedly installed together, and the outer side of the lower portion of the center pipe and the inner side of the upper portion of the guide sleeve are fixedly installed together; the outer side of the center pipe is provided with the cylinder sleeve, the rubber sleeve bush, the lower pressing sleeve and the lower connector in sequence from top to bottom. The packer capable of washing the well is reasonable and compact in structure and convenient to use, the internal structure is simple, the possibility of losing efficacy is lowered greatly, the success rate of packing and unpacking is ensured effectively, a tubular column is not needed when the well is washed, the well washing process is achieved easily, the packing cup assembly forms one-way communication between a liquid inlet ring cavity and a well washing ring cavity, the backwashing phenomenon is avoided effectively, and working efficiency is improved.
Description
Technical field
the utility model relates to oil extraction in oil field and packer technology field is used in oil-field flooding, is a kind of well packer capable of flushing well.
Background technology
drop into after Development and Production in oil field, and As time goes on, Casing Failure is corrosion-deformation gradually, and in the time implementing oil production by layer, because the foreign material in tubing string are more, easily because of passage plugging makes packer cannot be setting; For addressing the above problem, can use well packer capable of flushing well.But the inside of existing well packer capable of flushing well generally adopts piston to realize the opening and closing of backwashing mechanism, cannot accomplish fixed tubular column well-flushing, and easily there is the sealing ring seal failure of piston in its piston after long-term use, or make piston jam because of impurity and foulant, cause backwashing mechanism to open or to close, and then cause the phenomenon that well-flushing lost efficacy; Mostly also there is sealing and the poor stability of packing process in it, the problem that longevity of service easily lost efficacy.
Summary of the invention
the utility model provides a kind of well packer capable of flushing well, overcome the deficiency of above-mentioned prior art, its employing piston that can effectively solve existing well packer capable of flushing well existence is realized the phenomenon that backwash is prone to the sealing ring seal failure of piston or makes piston jam, and then easily cause backwashing mechanism to open or to close, cause the problem that well-flushing lost efficacy.
the technical solution of the utility model realizes by following measures: a kind of well packer capable of flushing well, comprises top connection, central tube, leather cup assembly, cylinder sleeve, packing element lining, packing element assembly, lower gland, shear pin, pilot sleeve and lower contact; The lower inside of top connection and the upper outside of central tube are fixedly installed togather, and the lower outside of central tube and the upper inner of pilot sleeve are fixedly installed togather; The outside of central tube is provided with cylinder sleeve, packing element lining, lower gland and lower contact from top to bottom successively, the lower outside of top connection and the upper inner of cylinder sleeve are fixedly installed togather, the upper outside of the lower inside of cylinder sleeve and packing element lining is fixedly installed togather, the lower outside of packing element lining is sleeved on the upper inner of lower gland and can moves up and down along the endoporus of lower gland, the spacing shear pin of energy is installed between packing element lining and lower gland, and the lower inside of lower gland and the upper outside of lower contact are fixedly installed togather; Corresponding cylinder sleeve below with press down above cover between the outside of packing element lining of position be set with the packing element assembly that can realize by extruding packing element packing; There is up big and down small stepped hole the inner side of lower contact, and the outside of pilot sleeve is sleeved on the top of stepped hole and can moves up and down along the large footpath section of stepped hole; The upper outside of central tube has outer groove, the spacing leather cup assembly of bottom land energy that is set with leather cup assembly and outer groove between the outer groove of corresponding top connection lower position and cylinder sleeve is descending, and the lower outside of leather cup assembly has the outside of seal lip and seal lip to be against the inner side of cylinder sleeve forming surface sealing with it; Between top connection, leather cup assembly and cylinder sleeve, form feed liquor ring cavity, on cylinder sleeve sidewall, be distributed with the well-flushing inlet opening that at least one communicates with feed liquor ring cavity; Between leather cup assembly, central tube, cylinder sleeve, packing element lining, lower gland, lower contact and pilot sleeve, form well-flushing annular space chamber, on the sidewall of lower gland, be distributed with the well-flushing outage that at least one communicates with well-flushing annular space chamber; Internal thread or external screw thread are arranged respectively at the top of top connection and the bottom of lower contact.
the further optimization and/or improvements to above-mentioned utility model technical scheme below:
above-mentioned leather cup assembly can comprise leather cup skeleton, rubber cup and well-flushing sliding sleeve; The U-loop groove that the upper end of rubber cup has cross section to take the shape of the letter U, the bottom of leather cup skeleton is fixedly mounted in U-loop groove, and seal lip is positioned at the lower outside of rubber cup and becomes one with rubber cup; The central tube outside of corresponding top connection lower position is set with bottom and can passes through the spacing well-flushing sliding sleeve of outer groove, and the upper inner of the upper outside of well-flushing sliding sleeve and leather cup skeleton is threaded connection and is fixedly installed togather.
above-mentioned outer groove outside below well-flushing sliding sleeve can be set with spacing spacer, and the lower end seat of spacing spacer is in the bottom land of outer groove.
between above-mentioned top connection and cylinder sleeve, between central tube and well-flushing sliding sleeve, between well-flushing sliding sleeve and leather cup skeleton, between cylinder sleeve and packing element lining and all can be provided with sealing ring between pilot sleeve and lower contact, the sealing ring below between central tube and well-flushing sliding sleeve is also provided with guard ring.
can there be inner groove the inner side, upper end of above-mentioned lower contact, in inner groove, be fixed with the righting sleeve that is sleeved on pilot sleeve outside, the upper inner of the righting sleeve of corresponding pilot sleeve top position is fixed with the interior ring platform that is sleeved on central tube outside and energy righting central tube.
lower end, the upper end of righting sleeve and the lower end of pilot sleeve of above-mentioned well-flushing sliding sleeve all can be uniformly distributed with four mounting process grooves along the circumference.
above-mentioned packing element assembly can comprise top packing element, upper support ring, middle packing element, lower support ring and following packing element; Top packing element, upper support ring, middle packing element, lower support ring and following packing element are sleeved on the outside of packing element lining from top to bottom successively; There is up-small and down-big frustum hole the inner side, lower end of cylinder sleeve, the upper outside of top packing element is positioned at frustum hole and is the taper type matching with frustum hole, up big and down small inversed taper platform hole inside the upper end of lower gland, the lower outside of packing element is positioned at inversed taper platform hole and is the inversed taper platform shape of matching with inversed taper platform hole below.
on above-mentioned cylinder sleeve sidewall, can be evenly distributed in four well-flushing inlet openings that communicate with feed liquor ring cavity; On the sidewall of lower gland, be evenly distributed in four well-flushing outages that communicate with well-flushing annular space chamber, wherein the upper arc-shaped edges of two symmetrical well-flushing outages extends upwardly to the top of central tube bottom and forms slotted hole, is provided with the inner is fixedly mounted on the anti-rotation nail on central tube sidewall in the upper inner of slotted hole; There is upper limit ring platform in the top connection outside of respective cylinder cover top position, and the lower end seat of upper limit ring platform is on cylinder sleeve; The cylinder sleeve inner side of corresponding packing element lining top position is all fixed with lower limit ring platform, and the lower end seat of lower limit ring platform is on packing element lining.
the utility model reasonable and compact in structure, easy to use, its internal construction is simple, greatly reduce the possibility of inefficacy, effectively guarantee the success rate of its packing and deblocking, in the time of well-flushing, do not need to employ tubing string simultaneously, easily realize washing well process, leather cup has always been shaped as the one-way conduction between feed liquor ring cavity and well-flushing annular space chamber, effectively avoids the generation of backwash phenomenon, increases work efficiency.
Brief description of the drawings
the master that accompanying drawing 1 is the utility model most preferred embodiment the first half looks half section structural representation.
the master that accompanying drawing 2 is the utility model most preferred embodiment the latter half looks broken section structural representation.
coding in accompanying drawing is respectively: 1 is top connection, pipe centered by 2, 3 is cylinder sleeve, 4 is packing element lining, 5 is lower gland, 6 is shear pin, 7 is pilot sleeve, 8 is lower contact, 9 is stepped hole, 10 is seal lip, 11 is feed liquor ring cavity, 12 is well-flushing inlet opening, 13 is well-flushing annular space chamber, 14 is well-flushing outage, 15 is leather cup skeleton, 16 is rubber cup, 17 is well-flushing sliding sleeve, 18 is U-loop groove, 19 is spacing spacer, 20 is sealing ring, 21 is guard ring, 22 is righting sleeve, 23 is interior ring platform, 24 is mounting process groove, 25 is top packing element, 26 is upper support ring, 27 is middle packing element, 28 is lower support ring, 29 is following packing element, 30 is slotted hole, 31 is anti-rotation nail, 32 is upper limit ring platform, 33 is lower limit ring platform.
Detailed description of the invention
the utility model is not subject to the restriction of following embodiment, can determine concrete embodiment according to the technical solution of the utility model and actual conditions.
in the utility model, for convenience of description, the description of the relative position relation of each parts is to be all described according to the Butut mode of Figure of description 1, as: the position relationship of forward and backward, upper and lower, left and right etc. is to determine according to the Butut direction of Figure of description.
below in conjunction with embodiment and accompanying drawing, the utility model is further described:
as shown in accompanying drawing 1,2, this well packer capable of flushing well comprises top connection 1, central tube 2, leather cup assembly, cylinder sleeve 3, packing element lining 4, packing element assembly, lower gland 5, shear pin 6, pilot sleeve 7 and lower contact 8; The upper outside of the lower inside of top connection 1 and central tube 2 is fixedly installed togather, and the upper inner of the lower outside of central tube 2 and pilot sleeve 7 is fixedly installed togather; The outside of central tube 2 is provided with cylinder sleeve 3, packing element lining 4, lower gland 5 and lower contact 8 from top to bottom successively, the upper inner of the lower outside of top connection 1 and cylinder sleeve 3 is fixedly installed togather, the upper outside of the lower inside of cylinder sleeve 3 and packing element lining 4 is fixedly installed togather, the lower outside of packing element lining 4 is sleeved on the upper inner of lower gland 5 and can moves up and down along the endoporus of lower gland 5, the spacing shear pin 6 of energy is installed between packing element lining 4 and lower gland 5, and the upper outside of the lower inside of lower gland 5 and lower contact 8 is fixedly installed togather; Between corresponding cylinder sleeve 3 belows and lower gland 5 tops, the outside of the packing element lining 4 of position is set with the packing element assembly that can realize by extruding packing element packing; There is up big and down small stepped hole 9 inner side of lower contact 8, and the outside of pilot sleeve 7 is sleeved on the top of stepped hole 9 and can moves up and down along the large footpath section of stepped hole 9; The upper outside of central tube 2 has outer groove, the spacing leather cup assembly of bottom land energy that is set with leather cup assembly and outer groove between the outer groove of corresponding top connection 1 lower position and cylinder sleeve 3 is descending, and the lower outside of leather cup assembly has the outside of seal lip 10 and seal lip 10 to be against the inner side of cylinder sleeve 3 forming surface sealing with it; Between top connection 1, leather cup assembly and cylinder sleeve 3, form feed liquor ring cavity 11, on cylinder sleeve 3 sidewalls, be distributed with the well-flushing inlet opening 12 that at least one communicates with feed liquor ring cavity 11; Between leather cup assembly, central tube 2, cylinder sleeve 3, packing element lining 4, lower gland 5, lower contact 8 and pilot sleeve 7, form well-flushing annular space chamber 13, on the sidewall of lower gland 5, be distributed with the well-flushing outage 14 that at least one communicates with well-flushing annular space chamber 13; Internal thread or external screw thread are arranged respectively at the bottom of the top of top connection 1 and lower contact 8.In use procedure, the utility model is connected in default pipe string, and in sleeve under lower going-into-well, after tubing string above pressing down is extremely cut off shear pin 6, it will promote top connection 1 and drive central tube 2, pilot sleeve 7, leather cup assembly, cylinder sleeve 3 is descending together with packing element lining 4, now pilot sleeve 7 is by descending the inner side along stepped hole, packing element lining 4 is by descending along the endoporus of lower gland 5 simultaneously, thereby shorten gradually the distance of cylinder sleeve 3 and lower gland 5, and the extruding of formation to packing element assembly, packing element will be deformed on the inwall that is against sleeve gradually, and then formation packing element packing, when need well-flushing under packing state time, well-flushing fluid can inject between sleeve and annular space of the present utility model chamber, now, well-flushing fluid will be positioned at the packing element assembly top of packing state, and enter feed liquor ring cavity 11 by well-flushing inlet opening 12, when the well-flushing fluid in feed liquor ring cavity 11 increases when seal lip 10 is separated with cylinder sleeve 3, feed liquor ring cavity 11 will be communicated with in well-flushing annular space chamber 13, well-flushing fluid will enter well-flushing annular space chamber 13 by feed liquor ring cavity 11, finally flow out from well-flushing outage 14, can realize thus washing well process, in the time of needs deblocking, above the tubing string of the side of putting on can increase the distance between cylinder sleeve 3 and lower gland 5 gradually, and packing element assembly will be separated to reinstatement with sleeve lining gradually, realizes thus deblocking process, whole process easy to operate, its internal construction is simple, greatly reduce the possibility of inefficacy, effectively guarantee the success rate of its packing and deblocking, in the time of well-flushing, do not need to employ tubing string, easily realize washing well process, leather cup has always been shaped as the one-way conduction between feed liquor ring cavity 11 and well-flushing annular space chamber 13 simultaneously, effectively avoid the generation of backwash phenomenon, increase work efficiency.
can according to actual needs, above-mentioned well packer capable of flushing well be made further optimization and/or improvements:
as shown in accompanying drawing 1,2, leather cup assembly comprises leather cup skeleton 15, rubber cup 16 and well-flushing sliding sleeve 17; The U-loop groove 18 that the upper end of rubber cup 16 has cross section to take the shape of the letter U, the bottom of leather cup skeleton 15 is fixedly mounted in U-loop groove 18, and seal lip 10 is positioned at the lower outside of rubber cup 16 and becomes one with rubber cup 16; Central tube 2 outsides of corresponding top connection 1 lower position are set with bottom can pass through the spacing well-flushing sliding sleeve 17 of outer groove, and the upper inner of the upper outside of well-flushing sliding sleeve 17 and leather cup skeleton 15 is threaded connection and is fixedly installed togather.
as shown in accompanying drawing 1,2, the outer groove outside below well-flushing sliding sleeve 17 is set with spacing spacer 19, and the lower end seat of spacing spacer 19 is in the bottom land of outer groove.When the size of the well-flushing sliding sleeve 17 of selecting cannot and outer groove between form well when spacing, can select according to the size of space between the two the spacing spacer 19 of appropriate size; According to demand, in the time that the upper end of well-flushing sliding sleeve 17 is against the lower end of top connection 1, should be gapped between the upper end of spacing spacer 19 and the lower end of well-flushing sliding sleeve 17, can be convenient to like this its installation; In use, the lower end of well-flushing sliding sleeve 17 in the upper end of spacing spacer 19, forms spacing to well-flushing sliding sleeve 17 with this by seat.
as shown in accompanying drawing 1,2, between top connection 1 and cylinder sleeve 3, between central tube 2 and well-flushing sliding sleeve 17, between well-flushing sliding sleeve 17 and leather cup skeleton 15, between cylinder sleeve 3 and packing element lining 4 and be equipped with sealing ring 20 between pilot sleeve 7 and lower contact 8, sealing ring 20 belows between central tube 2 and well-flushing sliding sleeve 17 are also provided with guard ring 21.Set up sealing ring 20 and can make it have good sealing effectiveness, guard ring 21 can prevent the intrusion of foreign object, further strengthens its sealing.
as shown in accompanying drawing 1,2, there is inner groove the inner side, upper end of lower contact 8, in inner groove, be fixed with the righting sleeve 22 that is sleeved on pilot sleeve 7 outsides, the upper inner of the righting sleeve 22 of corresponding pilot sleeve 7 top positions is fixed with the interior ring platform 23 that is sleeved on central tube outside and energy righting central tube.Righting sleeve 22 can not only play the righting effect to central tube 2, can also realize descending spacing of packing element lining 4.
as shown in accompanying drawing 1,2, the lower end of the lower end of well-flushing sliding sleeve 17, the upper end of righting sleeve 22 and pilot sleeve 7 is all uniformly distributed with four mounting process grooves 24 along the circumference.In assembling process, well-flushing sliding sleeve 17, righting sleeve 22 and pilot sleeve 7 all need to adopt and are threaded, and mounting process groove 24 can make it easy to realize the spacing of circumferencial direction and apply moment of torsion, thereby makes it easier for installation.
as shown in accompanying drawing 1,2, packing element assembly comprises top packing element 25, upper support ring 26, middle packing element 27, lower support ring 28 and following packing element 29; Top packing element 25, upper support ring 26, middle packing element 27, lower support ring 28 and following packing element 29 are sleeved on the outside of packing element lining 4 from top to bottom successively; There is up-small and down-big frustum hole the inner side, lower end of cylinder sleeve 3, the upper outside of top packing element 25 is positioned at frustum hole and is the taper type matching with frustum hole, up big and down small inversed taper platform hole inside the upper end of lower gland 5, the lower outside of packing element 29 is positioned at inversed taper platform hole and is the inversed taper platform shape of matching with inversed taper platform hole below.Can make it have so good packing effect.
as shown in accompanying drawing 1,2, on cylinder sleeve 3 sidewalls, be evenly distributed in four well-flushing inlet openings 12 that communicate with feed liquor ring cavity 11; On the sidewall of lower gland 5, be evenly distributed in four well-flushing outages 14 that communicate with well-flushing annular space chamber 13, wherein the upper arc-shaped edges of two symmetrical well-flushing outages 14 extends upwardly to the top of central tube 2 bottoms and forms slotted hole 30, is provided with the inner is fixedly mounted on the anti-rotation nail 31 on central tube 2 sidewalls in the upper inner of slotted hole 30; There is upper limit ring platform 32 in top connection 1 outside of corresponding cylinder sleeve 3 top positions, and the lower end seat of upper limit ring platform 32 is on cylinder sleeve 3; Cylinder sleeve 3 inner sides of corresponding packing element lining 4 top positions are all fixed with lower limit ring platform 33, and the lower end seat of lower limit ring platform 33 is on packing element lining 4.Anti-rotation nail 31 can prevent from, between lower gland 5 and central tube 2, relative angular displacement occurs, and in use, anti-rotation nail 31 can be descending along slotted hole 30 with central tube 2, and slotted hole 30 will form the slippage passage of anti-rotation nail 31; The pressure that the pressure that upper limit ring platform 32 can avoid top connection 1 to bear directly acts on its screw buckle being connected with cylinder sleeve 3 and cylinder sleeve 3 bears directly acts on its screw buckle being connected with packing element lining 4, extends its application life.
above technical characterictic has formed most preferred embodiment of the present utility model, and it has stronger compliance and best implementation result, can increase and decrease according to actual needs non-essential technical characterictic, meets the demand of different situations.
Claims (10)
1. a well packer capable of flushing well, is characterized in that comprising top connection, central tube, leather cup assembly, cylinder sleeve, packing element lining, packing element assembly, lower gland, shear pin, pilot sleeve and lower contact; The lower inside of top connection and the upper outside of central tube are fixedly installed togather, and the lower outside of central tube and the upper inner of pilot sleeve are fixedly installed togather; The outside of central tube is provided with cylinder sleeve, packing element lining, lower gland and lower contact from top to bottom successively, the lower outside of top connection and the upper inner of cylinder sleeve are fixedly installed togather, the upper outside of the lower inside of cylinder sleeve and packing element lining is fixedly installed togather, the lower outside of packing element lining is sleeved on the upper inner of lower gland and can moves up and down along the endoporus of lower gland, the spacing shear pin of energy is installed between packing element lining and lower gland, and the lower inside of lower gland and the upper outside of lower contact are fixedly installed togather; Corresponding cylinder sleeve below with press down above cover between the outside of packing element lining of position be set with the packing element assembly that can realize by extruding packing element packing; There is up big and down small stepped hole the inner side of lower contact, and the outside of pilot sleeve is sleeved on the top of stepped hole and can moves up and down along the large footpath section of stepped hole; The upper outside of central tube has outer groove, the spacing leather cup assembly of bottom land energy that is set with leather cup assembly and outer groove between the outer groove of corresponding top connection lower position and cylinder sleeve is descending, and the lower outside of leather cup assembly has the outside of seal lip and seal lip to be against the inner side of cylinder sleeve forming surface sealing with it; Between top connection, leather cup assembly and cylinder sleeve, form feed liquor ring cavity, on cylinder sleeve sidewall, be distributed with the well-flushing inlet opening that at least one communicates with feed liquor ring cavity; Between leather cup assembly, central tube, cylinder sleeve, packing element lining, lower gland, lower contact and pilot sleeve, form well-flushing annular space chamber, on the sidewall of lower gland, be distributed with the well-flushing outage that at least one communicates with well-flushing annular space chamber; Internal thread or external screw thread are arranged respectively at the top of top connection and the bottom of lower contact.
2. well packer capable of flushing well according to claim 1, is characterized in that leather cup assembly comprises leather cup skeleton, rubber cup and well-flushing sliding sleeve; The U-loop groove that the upper end of rubber cup has cross section to take the shape of the letter U, the bottom of leather cup skeleton is fixedly mounted in U-loop groove, and seal lip is positioned at the lower outside of rubber cup and becomes one with rubber cup; The central tube outside of corresponding top connection lower position is set with bottom and can passes through the spacing well-flushing sliding sleeve of outer groove, and the upper inner of the upper outside of well-flushing sliding sleeve and leather cup skeleton is threaded connection and is fixedly installed togather.
3. well packer capable of flushing well according to claim 2, is characterized in that the outer groove outside below well-flushing sliding sleeve is set with spacing spacer, and the lower end seat of spacing spacer is in the bottom land of outer groove.
4. according to the well packer capable of flushing well described in claim 2 or 3, it is characterized in that between top connection and cylinder sleeve, between central tube and well-flushing sliding sleeve, between well-flushing sliding sleeve and leather cup skeleton, between cylinder sleeve and packing element lining and be equipped with sealing ring between pilot sleeve and lower contact, the sealing ring below between central tube and well-flushing sliding sleeve is also provided with guard ring.
5. according to the well packer capable of flushing well described in claim 1 or 2 or 3, there is inner groove the inner side, upper end that it is characterized in that lower contact, in inner groove, be fixed with the righting sleeve that is sleeved on pilot sleeve outside, the upper inner of the righting sleeve of corresponding pilot sleeve top position is fixed with the interior ring platform that is sleeved on central tube outside and energy righting central tube.
6. well packer capable of flushing well according to claim 4, there is inner groove the inner side, upper end that it is characterized in that lower contact, in inner groove, be fixed with the righting sleeve that is sleeved on pilot sleeve outside, the upper inner of the righting sleeve of corresponding pilot sleeve top position is fixed with the interior ring platform that is sleeved on central tube outside and energy righting central tube.
7. well packer capable of flushing well according to claim 6, is characterized in that lower end, the upper end of righting sleeve and the lower end of pilot sleeve of well-flushing sliding sleeve is all uniformly distributed with four mounting process grooves along the circumference.
8. well packer capable of flushing well according to claim 7, is characterized in that packing element assembly comprises top packing element, upper support ring, middle packing element, lower support ring and following packing element; Top packing element, upper support ring, middle packing element, lower support ring and following packing element are sleeved on the outside of packing element lining from top to bottom successively; There is up-small and down-big frustum hole the inner side, lower end of cylinder sleeve, the upper outside of top packing element is positioned at frustum hole and is the taper type matching with frustum hole, up big and down small inversed taper platform hole inside the upper end of lower gland, the lower outside of packing element is positioned at inversed taper platform hole and is the inversed taper platform shape of matching with inversed taper platform hole below.
9. according to the well packer capable of flushing well described in claim 1 or 2 or 3, it is characterized in that being evenly distributed on cylinder sleeve sidewall four well-flushing inlet openings that communicate with feed liquor ring cavity; On the sidewall of lower gland, be evenly distributed in four well-flushing outages that communicate with well-flushing annular space chamber, wherein the upper arc-shaped edges of two symmetrical well-flushing outages extends upwardly to the top of central tube bottom and forms slotted hole, is provided with the inner is fixedly mounted on the anti-rotation nail on central tube sidewall in the upper inner of slotted hole; There is upper limit ring platform in the top connection outside of respective cylinder cover top position, and the lower end seat of upper limit ring platform is on cylinder sleeve; The cylinder sleeve inner side of corresponding packing element lining top position is all fixed with lower limit ring platform, and the lower end seat of lower limit ring platform is on packing element lining.
10. well packer capable of flushing well according to claim 8, is characterized in that being evenly distributed on cylinder sleeve sidewall four well-flushing inlet openings that communicate with feed liquor ring cavity; On the sidewall of lower gland, be evenly distributed in four well-flushing outages that communicate with well-flushing annular space chamber, wherein the upper arc-shaped edges of two symmetrical well-flushing outages extends upwardly to the top of central tube bottom and forms slotted hole, is provided with the inner is fixedly mounted on the anti-rotation nail on central tube sidewall in the upper inner of slotted hole; There is upper limit ring platform in the top connection outside of respective cylinder cover top position, and the lower end seat of upper limit ring platform is on cylinder sleeve; The cylinder sleeve inner side of corresponding packing element lining top position is all fixed with lower limit ring platform, and the lower end seat of lower limit ring platform is on packing element lining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420225553.2U CN203796218U (en) | 2014-05-05 | 2014-05-05 | Packer capable of washing well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420225553.2U CN203796218U (en) | 2014-05-05 | 2014-05-05 | Packer capable of washing well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203796218U true CN203796218U (en) | 2014-08-27 |
Family
ID=51378439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420225553.2U Expired - Lifetime CN203796218U (en) | 2014-05-05 | 2014-05-05 | Packer capable of washing well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203796218U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108457613A (en) * | 2018-02-07 | 2018-08-28 | 中国石油集团西部钻探工程有限公司 | Recyclable tubular packer |
-
2014
- 2014-05-05 CN CN201420225553.2U patent/CN203796218U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108457613A (en) * | 2018-02-07 | 2018-08-28 | 中国石油集团西部钻探工程有限公司 | Recyclable tubular packer |
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Granted publication date: 20140827 |