CN216811637U

CN216811637U - Easy-to-unseal packer for oil field

Info

Publication number: CN216811637U
Application number: CN202122784824.0U
Authority: CN
Inventors: 曾金明
Original assignee: Shaanxi Tongchuang Zhiying Machinery Manufacturing Co ltd
Current assignee: Shaanxi Tongchuang Zhiying Machinery Manufacturing Co ltd
Priority date: 2021-11-15
Filing date: 2021-11-15
Publication date: 2022-06-24
Anticipated expiration: 2031-11-15

Abstract

The utility model provides an easy-to-unseal packer for an oil field, which comprises: the track center tube, the top cover of track center tube is equipped with the top connection, the outside cover of top connection is equipped with the adjustable ring, the externally mounted of adjustable ring has the shop bolt, the outside of track center tube and the below cover that is located the adjustable ring are equipped with the packing element, and the quantity of packing element is three. When the packer easy to unseal for the oil field is unsealed, the pipe column is lifted, the upper joint and the track central pipe move upwards together, the cone exits when the slip ring pin moves to a bottom dead center, the slip main body is withdrawn to release the clamp, meanwhile, the deformation of the rubber cylinder is released due to no pressure extrusion, so that the unsealing is realized, the scraping ring is matched with the pipeline, the inner wall of the pipeline can be cleaned, the falling of the packer caused by sundries is avoided, meanwhile, the outer surface of the rubber cylinder is better attached to the inner surface of the pipeline, and the sealing performance is improved.

Description

Easy-to-unseal packer for oil field

Technical Field

The utility model relates to the field of packers, in particular to an easy-to-unseal packer for an oil field.

Background

The packer is a downhole tool which is connected to a downhole string and used for packing an annular space between an oil pipe and an oil and gas well casing or an open hole well wall, when the annular space between the oil pipe and the oil and gas well casing or the open hole well wall needs to be packed, the packer is connected to the downhole string, and after the annular space is packed to a designed depth, a packing part on the packer is expanded to pack the annular space between the oil casing and the annular space through hydraulic driving and other modes. Different types of packers have different starting modes and unsealing modes.

But the existing packer is troublesome to unseal, the packer is easy to damage because the packer is installed in an oil pipe for a long time to work, and a complicated unsealing structure is easy to damage in later operation, so that the packer cannot be taken out, or other equipment is required to be taken out.

Therefore, it is necessary to provide a packer for oilfield which is easy to unseal to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides an easy-to-unseal packer for an oil field, which solves the problems that the existing packer is troublesome to unseal, the packer is easy to damage due to long-term installation in an oil pipe for work, and a complex unsealing structure is easy to damage in later operation, so that the packer cannot be taken out or other equipment is required to take out.

The utility model provides an easy-to-unseal packer for an oil field, which comprises: the track center tube, the top cover of track center tube is equipped with the top connection, the outside cover of top connection is equipped with the adjustable ring, the externally mounted of adjustable ring has the shop bolt, the outside of track center tube and the below cover that is located the adjustable ring are equipped with the packing element, and the quantity of packing element is three, the outside of track center tube just is located and is equipped with the spacer ring between the three packing element, and the quantity of spacer ring is two, the outside of track center tube and the below cover that is located the packing element are equipped with the stop collar, the outside of track center tube and the below cover that is located the stop collar are equipped with the cone, the outside one side of cone is installed and is sat and seal the shear pin, the outside of track center tube and the below that is located the cone are equipped with fixture, the bottom cover of track center tube is equipped with the lower clutch.

Preferably, fixture includes the slip seat, the slip seat cover is established in the outside of track center tube and is located the below of cone, the mounting groove has been seted up to the outside of slip seat, and the quantity of mounting groove is four, four the draw-in groove has been seted up to the inside of mounting groove, four the internally mounted of draw-in groove has the fixture block, four the top welded connection of fixture block has the piece of righting, four it is equipped with the spring, four to right between piece and the slip seat the top welded connection of piece has the slips main part, be equipped with the hoop between slips main part and the slip seat, the bottom welded connection of slip seat has the screw thread post, the outside threaded connection of screw thread post has the sliding sleeve, be equipped with the screw hole between sliding sleeve and the screw thread post, the below welded connection of sliding sleeve has the scraping ring.

Preferably, the inner size of the clamping groove is matched with the outer size of the clamping block, and the centering block is clamped and installed with the slip seat through the matching between the clamping groove and the clamping block.

Preferably, the slip main body and the slip seat are sleeved and installed through a hoop ring, and the size of the scraping ring is matched with that of the oilfield pipeline.

Preferably, the adjusting ring is limited by a positioning pin and the track central tube, and the central line of the track central tube and the central line of the adjusting ring are overlapped.

Preferably, the cone is limited with the track central pipe through the setting shear pin, and a sealing ring is arranged between the adjusting ring and the upper joint.

Compared with the related art, the packer easy to unseal for the oil field provided by the utility model has the following beneficial effects:

when this packer deblocking, lift the tubular column, top connection and track center tube go upward together, the cone withdraws from when the sliding ring pin moves the bottom dead center, the slips main part is withdrawed and is unfreezed, and simultaneously, the deformation of packing element is relieved owing to there being no pressure extrusion, and then the deblocking, and convenient for operation, moreover, the steam generator is simple in structure, the scraping ring with pipeline looks adaptation, can clear up the pipe inner wall, avoid debris to prevent the whereabouts of packer, make the surface of packing element and the better laminating of the internal surface of pipeline simultaneously, improve the leakproofness.

Drawings

FIG. 1 is a schematic structural diagram of a preferred embodiment of an easy-to-unseal packer for an oilfield according to the present invention;

FIG. 2 is a schematic view of the disassembled structure shown in FIG. 1;

fig. 3 is a schematic structural view of the clamping mechanism shown in fig. 1.

In the figure: 1. a track center tube; 2. an upper joint; 3. an adjusting ring; 4. positioning a pin; 5. a rubber cylinder; 6. a spacer ring; 7. a limiting sleeve; 8. a cone; 9. setting the shear pin; 10. a clamping mechanism; 1001. a slip seat; 1002. mounting grooves; 1003. a card slot; 1004. a clamping block; 1005. a righting block; 1006. a spring; 1007. a slip body; 1008. a hoop; 1009. a threaded post; 1010. a sliding sleeve; 1011. a threaded hole; 1012. scraping rings; 11. and a lower joint.

Detailed Description

The utility model is further described with reference to the following figures and embodiments.

Referring to fig. 1, fig. 2 and fig. 3, fig. 1 is a schematic structural diagram of a packer for easy unsetting in an oilfield according to a preferred embodiment of the present invention; FIG. 2 is a schematic view of the disassembled structure shown in FIG. 1; FIG. 3 is a schematic structural diagram of the clamping mechanism shown in FIG. 1, and the packer easy to unseal for the oilfield comprises: track center tube 1, the top cover of track center tube 1 is equipped with top connection 2, the outside cover of top connection 2 is equipped with adjustable ring 3, adjustable ring 3's externally mounted has shop bolt 4, the outside of track center tube 1 and the below cover that is located adjustable ring 3 are equipped with packing element 5, and the quantity of packing element 5 is three, the outside of track center tube 1 and be located and be equipped with spacer ring 6 between three packing element 5, and the quantity of spacer ring 6 is two, the outside of track center tube 1 and the below cover that is located packing element 5 are equipped with stop collar 7, the outside of track center tube 1 and the below cover that is located stop collar 7 are equipped with cone 8, seat shear pin 9 is installed to one side of cone 8 outside, the outside of track center tube 1 and the below that is located cone 8 are equipped with fixture 10, the bottom cover of track center tube 1 is equipped with lower clutch 11.

Fixture 10 includes slip seat 1001, slip seat 1001 cover is established in track center tube 1's outside and is located the below of cone 8, mounting groove 1002 has been seted up to slip seat 1001's outside, and the quantity of mounting groove 1002 is four, draw-in groove 1003 has been seted up to the inside of four mounting grooves 1002, the internally mounted of four draw-in grooves 1003 has fixture block 1004, four fixture block 1004's top welded connection has righting piece 1005, four are right and are equipped with spring 1006 between piece 1005 and the slip seat 1001, four top welded connection who rights piece 1005 have slips main body 1007, be equipped with hoop 1008 between slips main body 1007 and the slip seat 1001, the bottom welded connection of slip seat 1001 has threaded column 1009, the outside threaded connection of threaded column 1009 has sliding sleeve 1010, be equipped with screw hole 1011 between sliding sleeve 1010 and the threaded column 1009, sliding sleeve 1010's below welded connection has scraping ring 1012.

Identical between the inside dimension of draw-in groove 1003 and the outside dimension of fixture block 1004, the cooperation that rights piece 1005 passes through between draw-in groove 1003 and the fixture block 1004 is installed with the clamping of slip seat 1001 for right more stable of piece 1005 installation, the condition that is difficult to take place to shift or drop during the use has improved the security and the stability of isolator.

The installation is established to the cover through hoop 1008 between slips main part 1007 and the slip bowl 1001, the size and the oil field pipeline looks adaptation of scraping ring 1012, the cover through hoop 1008 is established, make slips main part 1007 can carry out the upset of certain angle, make slips main part 1007 and the inside tight block of oil field pipeline, the packer is fixed with the pipeline, and scraping ring 1012 is in with pipeline looks adaptation, can clear up the pipeline inner wall, avoid debris to prevent the whereabouts of packer, make the better laminating of the surface of packing element 5 and the internal surface of pipeline simultaneously, improve the leakproofness.

Adjusting ring 3 carries on spacingly through dowel 4 and track center tube 1, and the coincidence each other between the central line of track center tube 1 and the central line of adjusting ring 3, stable in structure, it is safe in utilization.

The cone 8 is limited with the track center tube 1 through the setting shear pin 9, and a sealing ring is arranged between the adjusting ring 3 and the upper joint 2, so that the structure is stable, and the use is safe.

The utility model provides an easy-to-unseal packer for an oil field, which has the following working principle:

when setting, the pipe column is lifted up according to the required setting height and then put down, because the clamping mechanism 10 depends on the tension of the spring 1006, the righting block 1005 moves along the track groove of the track central pipe 1, the slip ring pin moves from the upper dead point of the short groove to the upper dead point of the long groove at the setting position, the slip ring main body 1007 is propped open by the cone 8 and clamped on the casing, meanwhile, the upper joint 2 and the track central pipe 1 go down together to compress the rubber cylinder 5, the annular space of the oil-insulated casing is sealed, when unsealing, the pipe column is lifted up, the upper joint 2 and the track central pipe 1 go up together, when the slip ring pin moves to the lower dead point, the cone 8 withdraws, the slip main body 1007 withdraws to release the clamp, meanwhile, the deformation of the rubber cylinder 5 is released 1012 due to no pressure extrusion, and then the unsealing is convenient to operate, the structure is simple, the scraper ring is matched with the pipeline, can clean the inner wall of the pipeline, so as to avoid the sundries from stopping the falling of the packer, and simultaneously make the outer surface of the rubber cylinder 5 better fit with the inner surface of the pipeline, the sealing performance is improved.

the current packer deblocking is troublesome, because the long-term installation of packer carries out work in oil pipe's inside, easy damage, and comparatively complicated deblocking structure damages easily in the operation in later stage, and lead to the packer can't take out, perhaps need other equipment to take out, during this packer deblocking, lift the tubular column, top connection 2 and track center tube 1 go upward together, cone 8 withdraws from when the sliding ring pin moves the bottom dead center, slips main part 1007 withdraws and unfreezes, and simultaneously, the deformation of packing element 5 is relieved owing to there is not pressure extrusion, and then the deblocking, convenient operation, moreover, the steam generator is simple in structure, scraping ring 1012 and pipeline looks adaptation, can clear up the pipe inner wall, avoid debris to prevent the whereabouts of packer, make the better laminating of the surface of packing element 5 and the internal surface of pipeline simultaneously, improve the leakproofness.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. An easy unset packer for an oilfield, comprising: track center tube (1), its characterized in that: the top end of the track central pipe (1) is sleeved with an upper connector (2), the outer portion of the upper connector (2) is sleeved with an adjusting ring (3), positioning pins (4) are mounted on the outer portion of the adjusting ring (3), rubber cylinders (5) are sleeved on the outer portion of the track central pipe (1) and located below the adjusting ring (3), the number of the rubber cylinders (5) is three, spacer rings (6) are arranged on the outer portion of the track central pipe (1) and located between the three rubber cylinders (5), the number of the spacer rings (6) is two, limit sleeves (7) are sleeved on the outer portion of the track central pipe (1) and located below the rubber cylinders (5), cones (8) are sleeved on the outer portion of the track central pipe (1) and located below the limit sleeves (7), seat seal shear pins (9) are mounted on one side of the outer portion of the cones (8), clamping mechanisms (10) are arranged on the outer portion of the track central pipe (1) and located below the cones (8), the track central pipe comprises a track central pipe (1), wherein a lower joint (11) is sleeved at the bottom end of the track central pipe (1), the clamping mechanism (10) comprises a slip seat (1001), the slip seat (1001) is sleeved outside the track central pipe (1) and is located below a cone (8), mounting grooves (1002) are formed in the outer portion of the slip seat (1001), the number of the mounting grooves (1002) is four, clamping grooves (1003) are formed in the inner portion of the mounting grooves (1002), clamping blocks (1004) are mounted in the four clamping grooves (1003), centering blocks (1005) are welded and connected to the tops of the four clamping blocks (1004), springs (1006) are arranged between the centering blocks (1005) and the slip seat (1001), the tops of the four centering blocks (1005) are welded and connected with a slip main body (1007), a slip ring (1008) is arranged between the slip main body (1007) and the slip seat (1001), and threaded columns (1009) are welded and connected to the bottom of the slip seat (1001), the external thread of the threaded column (1009) is connected with a sliding sleeve (1010), a threaded hole (1011) is formed between the sliding sleeve (1010) and the threaded column (1009), a scraping ring (1012) is welded below the sliding sleeve (1010), the internal dimension of the clamping groove (1003) is matched with the external dimension of the clamping block (1004), the centering block (1005) is clamped and installed with the slip seat (1001) through the matching between the clamping groove (1003) and the clamping block (1004), the slip main body (1007) is sleeved and installed with the slip seat (1001) through the hoop (1008), and the scraping ring (1012) is matched with an oil field pipeline in size.

2. An oilfield packer easy to unseal according to claim 1, wherein the adjusting ring (3) is limited by a locating pin (4) and a track central pipe (1), and the central line of the track central pipe (1) and the central line of the adjusting ring (3) are coincident with each other.

3. An oilfield packer easy to unset according to claim 2, wherein the cone (8) is limited by a setting shear pin (9) and a track central pipe (1), and a sealing ring is arranged between the adjusting ring (3) and the upper joint (2).