CN206769870U - Small size is exempted to bore plug completion tool - Google Patents
Small size is exempted to bore plug completion tool Download PDFInfo
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- CN206769870U CN206769870U CN201720287076.6U CN201720287076U CN206769870U CN 206769870 U CN206769870 U CN 206769870U CN 201720287076 U CN201720287076 U CN 201720287076U CN 206769870 U CN206769870 U CN 206769870U
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Abstract
A kind of small size suitable for 139.7mm pipe strings is the utility model is related to exempt to bore plug completion tool, including：The outer tube formed after mainly being connected by upper overcoat, circulating sleeve, closing set, packer with lower contact；The inner tube formed is mainly connected with central tube by fishing socket, bruising set, filling set, ball seat；Wherein packer is sleeved on outside lower contact, is mainly made up of the piston component of packing element and packing element both ends.Do not have to mud grouting, saving activity duration when the instrument is applied, during setting of casing, and device inner tube bottom is ball seat, pitching is front upper and lower to be communicated, and such as complex situations, can be circulated with turn on pump；And inner tube is made up of duralumin, hard alumin ium alloy material, if meeting complex situations, can not salvage junk mill drill bit can be descended to be ground off, improve the safety and reliability of operation；After bruising, while closing set and close circulation port, the set descending failure of interior sealing is closed so that inner tube communicates up and down, piston effect during so as to eliminate salvaging, reduces salvaging power.
Description
Technical field
A kind of top cementing of horizontal well sieve tube of oilfield well completion field of tool is the utility model is related to exempt to bore plug completion dress
Put.
Background technology
At present, top cementing of horizontal well sieve tube exempts to bore plug technique, has been obtained in the construction of oilfield horizontal well completion wide
General successfully application.In protection sleeve pipe and completion annex, reduce completion period in terms of the huge advantage that shows.But with brill
The development of well technology, deep-well, middle-deep well, extended horizontal well are on the increase, and these wells have well depth, completion practice time length；
Casing size is small, using salvaging the features such as power is big when exempting to bore plug instrument, and existing to exempt to bore plug instrument be difficult the needs for meeting scene,
Sometimes down-hole accident can even be caused.
Patent publication No. CN102071902B provides a kind of horizontal cementing and exempts to bore plug device, and this exempts to bore plug device master
If by top connection (1), outer tube (2), hydraulic control portion, inner tube (6), valve union (8), blind plate (9), packing element, central tube
(12) it is flexibly connected with lower contact (18) composition, one end of described outer tube (2) with top connection (1), the other end and valve union (8)
It is flexibly connected, is provided with inner tube (6) in outer tube (2), the bottom of inner tube is provided with perforate, and when inner tube is descending, perforate can establish with stratum
Circulation canal, inner tube top are provided with the screw thread tightly inserted for fishing spear, and the bottom of inner tube (6) is provided with blind plate (9), and described is outer
Manage fixed hydraulic control section between (2) and inner tube (6)；Described valve union (8) side is connected with central tube (12)；Central tube
(12) packing element, central tube (12) bottom connection lower contact (18) are externally provided with；Described hydraulic control portion includes fluid cylinder (3), copper
Shear pin (4), interstage sleeve (5), set (7) is closed, the both ends of described copper shear pin (4) connect inner tube (6) and outer tube (2) respectively.The dress
It is blind plate to put middle inner tube bottom, so, setting of casing process is unable to turn on pump circulation, if running into down hole problem, lacks solution and arranges
Apply；And to be often in the milk during setting of casing, pipe string quiescent time in well is long, not only wastes time, if it is unstable to meet the borehole wall
Situations such as determining, easily cause well slough.What patent publication No. CN202125275U was provided exempts to bore plug tool construction complexity, and bruising is closed
After circulation port, it is impossible to eliminate piston effect, it is big to salvage power during salvaging, it is impossible to applied to deep-well.
Utility model content
For at present exempt from bore plug instrument existing for deficiency, there is provided during a kind of setting of casing be recycled, salvage power it is small, using well more
The deep new small size suitable for 139.7mm tubing strings is exempted to bore plug completion tool.
The technical solution of the utility model is：
Small size, which exempts from brill plug completion tool, to be included, and is mainly connected by upper overcoat, circulating sleeve, closing set, packer and lower contact
The outer tube formed after connecing；The inner tube formed is mainly connected with central tube by fishing socket, bruising set, filling set, ball seat；Packer set
Outside lower contact, mainly it is made up of the piston component of packing element and packing element both ends, wherein：Salvage drum outer wall epimere and upper overcoat
It is connected by closing piece and keeps sealing, is salvaged and leave gap between drum outer wall hypomere and upper overcoat, the fishing socket of the gap location
It is radially provided with inlet opening；Bruising set is fixed on fishing socket inwall by shear pin, and blocks the inlet opening that fishing socket is radially provided with；Fill
The lower end that set is connected to fishing socket is filled out, it is outside relative with circulating sleeve；Filling set has been radially arranged upper and lower two-way circulation port and filling
Hole, and the circulation port of circulation port and its outside relative cycle set penetrates, pack hole connects with the flow-guiding channel of packer；Close set
By shear pin sealed holding between filling set and circulating sleeve, the gap between upper surface and fishing socket and upper overcoat is corresponding, under
End face is corresponding with the flow-guiding channel of packer；Closing is arranged with radial circulation hole, its circulation port and filling set during original state
The circulation port of circulation port and circulating sleeve penetrates, while seals the flow-guiding channel for blocking upper gap and lower packer, closes set
Be pressurized it is descending after will fill set circulation port and circulating sleeve circulation port closure close；Ball seat is being filled by shear pin fixing seal
Inwall is covered, is radially provided with the pack hole with the pack hole insertion of filling set on ball seat, it is close that ball seat top with filling puts circulation port
Envelope coordinates；Central tube is connected to filling set bottom, forms flow-guiding channel with being connected between the packer of circulating sleeve bottom, center
Pipe lower end bossing is slidingly sealed cooperation with lower contact inwall；Stage casing forms groove after lower contact top is connected with circulating sleeve,
The piston component of packing element and packing element upper/lower terminal is arranged in groove；The piston component of packing element upper/lower terminal by piston block and
Piston fixture block forms, wherein upper and lower piston fixture block is connected with circulating sleeve and lower contact plush copper respectively, upper and lower piston block is with
Joint forms the sealing that slides axially and coordinated；Between upper and lower piston block and corresponding piston fixture block axially position is formed by locking tooth
Coordinate；Corresponding to radial punch hole is respectively equipped with the lower contact of upper and lower piston block, punching hole communicates with flow-guiding channel.
Such scheme further comprises：
Also include the plug of umbrella-shaped structure；The packing element uses two-stage structure, is docked between two sections of packing elements by fixture block.
Seal is provided with closing between set and circulating sleeve, filling set；Central tube lower end bossing and lower contact it
Between be provided with seal.
Seal is equipped with upper and lower piston block inwall；Ball seat top O-ring stops the circulation port that filling is put.
The brill plug completion tool external dimensions of exempting from is satisfied among 139.7mm pipe strings.
The utility model has the advantages that：
1st, do not have to mud grouting during setting of casing, save the activity duration, and device inner tube bottom is ball seat, the front upper and lower phase of pitching
It is logical, such as complex situations, can be circulated with turn on pump.
2nd, the device inner tube is made up of duralumin, hard alumin ium alloy material, if meet complex situations, can not salvage, can descend junk mill drill bit by its
Grind off, improve the safety and reliability of operation
3rd, after bruising, while closing set and close circulation port, the set descending failure of interior sealing is closed so that inner tube phase up and down
It is logical, piston effect during so as to eliminate salvaging, reduce salvaging power.
Brief description of the drawings
Fig. 1 is a kind of structural representation of embodiment of the utility model；
Fig. 2 is a kind of supporting special rubber plug of embodiment of the utility model.
In figure：1st, upper overcoat；2nd, closing piece；3rd, bruising set；4th, fishing socket；5th, circulating sleeve；6th, filling set；7th, set is closed；8、
Shear pin；9th, ball seat；10th, shear pin；11st, the packing element of packer；12nd, inner central tube；13rd, lower contact；14th, plug；15th, inlet opening；
16th, circulation port；17th, pack hole；18th, upper punching hole；19th, lower punching hole.
Embodiment
With reference to Figure of description, the utility model will be further described
Include as shown in figure 1, a kind of small size exempts from brill plug completion tool：Mainly by upper overcoat 1, circulating sleeve 5, close set 7,
The outer tube that packer and lower contact 13 form after connecting, and mainly by salvaging:4th, bruising set 3, filling set 6, ball seat 9 and center
The inner tube of the connection composition of pipe 12.Packer is sleeved on outside lower contact 12, mainly by packing element 11 and the piston component at packing element both ends
（Do not marked in figure）Composition.Wherein：
The outer wall epimere of fishing socket 4 is connected by closing piece 2 with upper overcoat 1 and keeps sealing, the outer wall hypomere of fishing socket 4 with it is upper
Gap is left between overcoat 1, the fishing socket 4 of the gap location is radially provided with inlet opening 15.Bruising set 3 is fixed on salvaging by shear pin
4 inwalls of cylinder, and block the inlet opening 15 that fishing socket 4 is radially provided with.Filling set 6 is connected to the lower end of fishing socket 4, outside with circulating
It is relative to cover 5.Filling set 6 has been radially arranged upper and lower two-way circulation port 16 and pack hole 17, and circulation port 16 follows relatively with its outside
The circulation port insertion of ring set 5, pack hole 17 connect with the flow-guiding channel of packer.Set 7 is closed to fill by the sealed holding of shear pin 8
Fill out between set 6 and circulating sleeve 5, the gap between upper surface and fishing socket 4 and upper overcoat 1 is corresponding, and lower surface and packer are led
Circulation road is corresponding.Close set 7 and be provided with radial circulation hole, its circulation port covers the circulation port of 6 and circulating sleeve 5 with filling during original state
16 insertions, while the flow-guiding channel for blocking upper gap and lower packer is sealed, by filling set 6 after the compression of closing set 7 is descending
Block and close with the circulation port 16 of circulating sleeve 5.The radial direction on filling 6 inwalls of set, ball seat 9 by the fixing seal of shear pin 10 of ball seat 9
The pack hole penetrated provided with the pack hole 17 with filling set 6, the top of ball seat 9 coordinate with the sealing of circulation port 16 on filling set 5.Center
Pipe 12 is connected to 6 bottoms of filling set, flow-guiding channel is formed with being connected between the packer of the bottom of circulating sleeve 5, under central tube 12
End bossing is slidingly sealed cooperation with the inwall of lower contact 13.Stage casing forms groove after the top of lower contact 12 is connected with circulating sleeve 5,
The piston component of packing element 11 and packing element upper/lower terminal is arranged in groove；The piston component of packing element upper/lower terminal is by piston block
Formed with piston fixture block, wherein upper and lower piston fixture block is connected with circulating sleeve and lower contact plush copper respectively, upper and lower piston block with
Lower contact forms the sealing that slides axially and coordinated；Axially determined by locking tooth and forming between upper and lower piston block and corresponding piston fixture block
Position coordinates；Corresponding to being respectively equipped with radial punch hole in the lower contact of upper and lower piston block（18/19）, punching hole and flow-guiding channel
Communicate.
Above-described embodiment further comprises：
Also include the plug 14 of umbrella-shaped structure（Reference picture 2）；The packing element 11 uses two-stage structure, between two sections of packing elements 11
Docked by fixture block.
Seal is provided with closing between set 7 and circulating sleeve 5, filling set 6；Connect in the lower end bossing of central tube 12 with
Seal is provided between first 13.
Seal is equipped with upper and lower piston block inwall；The top of ball seat 9 O-ring stops the circulation port on filling set 6.
The brill plug completion tool external dimensions of exempting from is satisfied among 139.7mm pipe strings.
Pay attention to, ball seat internal diameter and spheroid external diameter are less than the internal diameter that bruising covers, and spheroid external diameter is less than what ball seat circulation port went out
Internal diameter.
Its operation principle is：During horizontal well completion, 139.7mm completion tools are connected into completion tubular string according to design,
During tripping in, because of the design without blind plate, whole tripping in process can not mud grouting, save the setting of casing time.Pipe string is in place
Afterwards, turn on pump circulates, and after circulating one week, pitching reaches ball seat 9, and now the pack hole 17 of drilling fluid from ball seat 9 and filling set 6 enters
Packing element 11, packing element 11 under piston and piston fixture block mating reaction by the swollen envelope of packer after, continue to rise
Straightening is cut short to shear pin 10, and ball seat 9 is descending, is exposed the circulation port on filling set 6, is now communicated in sleeve pipe with casing annulus,
Circulation is established, recycling drilling fluid starts to cement the well after one week.After cemented up, replaced with special rubber plug 14, when plug 14 reaches
During bruising set 3, the main part of plug 14 drives bruising set 3 to cut the descending bruising of pin.Now liquid enter fishing socket 4 with it is upper outer
Space between set 1, the circulation port that set 7 is descending, closes on circulating sleeve 5 is closed so as to promote, and it is descending now to close 7 interior sealings of set
Failure, so as to upper and lower UNICOM, piston force during salvaging is eliminated, is waited after coagulating 4 hours, started to connect fishing spear salvaging, beaten with special
Drag for when 4 position of fishing socket is arrived under lance, push 20 tons and above carry again, the closing piece 2 between fishing socket 4 and upper overcoat unlocks, inner tube just by
Complete salvage is come.
Claims (5)
1. small size is exempted to bore plug completion tool, group after mainly being connected by upper overcoat, circulating sleeve, closing set, packer with lower contact
Into outer tube；The inner tube formed is mainly connected with central tube by fishing socket, bruising set, filling set, ball seat；Wherein packer is set with
Outside lower contact, mainly it is made up of the piston component of packing element and packing element both ends, it is characterized in that：Salvage drum outer wall epimere with it is upper outer
Set is connected by closing piece and keeps sealing, and is salvaged and is left gap between drum outer wall hypomere and upper overcoat, the salvaging of the gap location
Cylinder is radially provided with inlet opening；Bruising set is fixed on fishing socket inwall by shear pin, and blocks the inlet opening that fishing socket is radially provided with；
Filling set is connected to the lower end of fishing socket, outside relative with circulating sleeve；Filling set has been radially arranged circulation port and pack hole, and follows
The circulation port of annular distance and its outside relative cycle set penetrates, and pack hole connects with the flow-guiding channel of packer；Set is closed by cutting
Follow closely sealed holding filling set circulating sleeve between, the gap between upper surface and fishing socket and upper overcoat is corresponding, lower surface and
The flow-guiding channel of packer is corresponding；Closing is arranged with radial circulation hole, the circulation port of its circulation port and filling set during original state
Penetrated with the circulation port of circulating sleeve, while seal the flow-guiding channel for blocking upper gap and lower packer；Ball seat passes through shear pin
Fixing seal covers inwall in filling, the pack hole with the pack hole insertion of filling set is radially provided with ball seat, ball seat top is with filling
Fill out and put circulation port sealing cooperation；Central tube is connected to filling set bottom, with being connected to structure between the packer of circulating sleeve bottom
Into flow-guiding channel, central tube lower end bossing is slidingly sealed cooperation with lower contact inwall；Lower contact top is connected with circulating sleeve
The piston component of stage casing formation groove afterwards, packing element and packing element upper/lower terminal is arranged in groove；The piston of packing element upper/lower terminal
Component forms by piston block and piston fixture block, wherein upper and lower piston fixture block is connected with circulating sleeve and lower contact plush copper respectively,
Upper and lower piston block forms the sealing that slides axially with lower contact and coordinated；Pass through between upper and lower piston block and corresponding piston fixture block
Lock tooth and form axially position cooperation；Corresponding to radial punch hole is respectively equipped with the lower contact of upper and lower piston block, punching hole is with leading
Circulation road communicates.
2. small size according to claim 1 is exempted to bore plug completion tool, it is characterized in that：Also include the plug of umbrella-shaped structure；
The packing element uses two-stage structure, is docked between two sections of packing elements by fixture block.
3. small size according to claim 1 or 2 is exempted to bore plug completion tool, it is characterized in that：Close set with circulating sleeve, fill
Fill out between covering and be provided with seal；Seal is provided between central tube lower end bossing and lower contact.
4. small size according to claim 1 or 2 is exempted to bore plug completion tool, it is characterized in that：It is equal in upper and lower piston block inwall
Provided with seal；Ball seat top O-ring stops the circulation port that filling is put.
5. small size according to claim 1 or 2 is exempted to bore plug completion tool, it is characterized in that：It is described to exempt to bore plug completion tool
External dimensions is satisfied among 139.7mm pipe strings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720287076.6U CN206769870U (en) | 2017-03-23 | 2017-03-23 | Small size is exempted to bore plug completion tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720287076.6U CN206769870U (en) | 2017-03-23 | 2017-03-23 | Small size is exempted to bore plug completion tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206769870U true CN206769870U (en) | 2017-12-19 |
Family
ID=60632270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720287076.6U Active CN206769870U (en) | 2017-03-23 | 2017-03-23 | Small size is exempted to bore plug completion tool |
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| Country | Link |
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| CN (1) | CN206769870U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108278095A (en) * | 2018-03-15 | 2018-07-13 | 中国石油化工股份有限公司江汉油田分公司石油工程技术研究院 | A kind of piston reciprocating type exempts to bore plug stage cementing device |
| CN108625817A (en) * | 2017-03-23 | 2018-10-09 | 中石化石油工程技术服务有限公司 | Small size is exempted to bore plug completion tool |
| CN110500043A (en) * | 2019-08-23 | 2019-11-26 | 中国石油大学(北京) | Cementing system and casing joint |
| CN112343540A (en) * | 2019-08-08 | 2021-02-09 | 中国石油化工股份有限公司 | Packing type staged cementing device, well cementation pipe column and well cementation method |
-
2017
- 2017-03-23 CN CN201720287076.6U patent/CN206769870U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108625817A (en) * | 2017-03-23 | 2018-10-09 | 中石化石油工程技术服务有限公司 | Small size is exempted to bore plug completion tool |
| CN108278095A (en) * | 2018-03-15 | 2018-07-13 | 中国石油化工股份有限公司江汉油田分公司石油工程技术研究院 | A kind of piston reciprocating type exempts to bore plug stage cementing device |
| CN108278095B (en) * | 2018-03-15 | 2024-04-02 | 中国石油化工股份有限公司 | Piston reciprocating type drilling-free plug stage cementing device |
| CN112343540A (en) * | 2019-08-08 | 2021-02-09 | 中国石油化工股份有限公司 | Packing type staged cementing device, well cementation pipe column and well cementation method |
| CN110500043A (en) * | 2019-08-23 | 2019-11-26 | 中国石油大学(北京) | Cementing system and casing joint |
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