CN203430467U - Packer - Google Patents
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- CN203430467U CN203430467U CN201320394814.9U CN201320394814U CN203430467U CN 203430467 U CN203430467 U CN 203430467U CN 201320394814 U CN201320394814 U CN 201320394814U CN 203430467 U CN203430467 U CN 203430467U
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- Prior art keywords
- central tube
- backwash
- liquid cylinder
- plug pipe
- outside
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- Expired - Fee Related
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Abstract
The utility model discloses a packer. A center pipe is provided with an upper end and a lower end which are connected with an upper component and a lower component through threads respectively. The upper component comprises an upper connector, a backflushing valve outer barrel, a backflushing valve element, an outer center pipe, a protrusion preventing ring and a rubber sleeve. An upper side open hole is formed in the outer side of the part, located at the lower end of the upper connector, of the center pipe. The part, located at the lower end of the upper connector, of the center pipe is sleeved with the backflushing valve element, the upper connector is sleeved with the backflushing valve outer barrel, through holes are annularly and evenly formed in the middle of the backflushing valve outer barrel, the part, located at the lower end of the backflushing valve element, of the center pipe is sleeved with the outer center pipe, the protrusion preventing ring is sleeved with a lower step, and the rubber sleeve is arranged at the lower end of the outer center pipe in a sleeved mode and is clamped with the protrusion preventing ring. The packer has the advantages of being simple in structure, reasonable in design, reliable in sitting and well flushing, large in pressure bearing capability, corrosion resistant and the like.
Description
Technical field
The utility model relates to a kind of packer, relates in particular to a kind of packer being used on oil well.
Background technology
Oil field, in carrying out acid fracturing job execution, adopts mechanical packer or hydraulic packer to carry out stratified operation often.Because packer does not arrange backwash passage, when there is card sand or sand pipe laying post, easily cause removing seal for packer difficulty, cause oil well to repair magnetic energy and resume production, waste of manpower, physics and financial resources, increased cost of production and workman's labour intensity.
Utility model content
The utility model, for the deficiencies in the prior art, provides a kind of anticorrosive, simple in structure, and well-flushing is reliable, the packer that bearing capacity is large.
For achieving the above object, the utility model is achieved through the following technical solutions:
A kind of packer, comprise central tube, upper-part and lower member, central tube is provided with top and bottom, central tube upper and lower side is threaded connection with upper-part and lower member respectively, described upper-part comprises top connection, backwash valve urceolus, backwash spool, exterior central tube, protrusion-dispelling ring and packing element, in top connection lower end, central tube arranged outside has upper opening, in top connection arranged outside, there is projection, sheathed backwash spool outside the central tube of top connection lower end, in top connection outside, be arranged with backwash valve urceolus, backwash valve urceolus middle part annular is evenly provided with through hole, inner side, the upper and lower two ends of backwash valve urceolus is provided with screw thread, backwash valve urceolus upper end and top connection are threaded connection, sheathed exterior central tube outside the central tube of backwash spool lower end, exterior central tube upper end and backwash spool lower end snap-on design, exterior central tube upper end arranged outside has screw thread, outer center is connected with backwash valve urceolus lower end by screw thread, in exterior central tube lower end, arranged outside is got out of a predicament or an embarrassing situation, protrusion-dispelling ring set is located at the inboard of getting out of a predicament or an embarrassing situation, packing element is set in exterior central tube lower end and engages with protrusion-dispelling ring, between top connection and backwash valve urceolus, between backwash spool and central tube, between backwash spool and backwash valve urceolus, between backwash spool and exterior central tube, be respectively equipped with sealing ring.
Described lower member comprises liquid cylinder, first piston cover, the second piston bush, middle plug pipe, lock ring, lock ring stop collar, deblocking shear pin, lower liquid cylinder, set shear pin and lower contact, in central tube lower end, be threaded connection with middle plug pipe, in plug pipe upper end, centre, central tube arranged outside has lower STH, sheathed first piston cover outside the central tube of middle plug pipe upper end, the sheathed lock ring in middle plug pipe middle part, lock ring stop collar engages setting with lock ring, deblocking shear pin is filled on pipe in the middle of lock ring stop collar is fixed on, middle plug pipe lower end and lower contact are threaded connection, in the middle of lower contact upper end, plug pipe arranged outside has lower STH, sheathed the second piston bush in plug pipe outside in the middle of lower contact upper end, liquid cylinder on sheathed outside plug pipe in the middle of exterior central tube outside, upper liquid cylinder upper end and exterior central tube are threaded connection, upper fluid cylinder liquid upper end exterior annular is evenly provided with through hole, lower contact arranged outside has projection, between lower contact projection and upper liquid cylinder, cover is set liquid cylinder, lower liquid cylinder is threaded connection with upper liquid cylinder and lower contact respectively, in lower liquid cylinder and lower contact junction, be provided with and set shear pin, between upper liquid cylinder and first piston cover, between first piston cover and central tube, between upper liquid cylinder and middle plug pipe, between lower liquid cylinder and the second piston bush, between the second piston bush and middle plug pipe, between lower contact and lower liquid cylinder, be respectively arranged with sealing ring.
Described backwash spool and backwash valve urceolus material are 3Cr13.
Compared with prior art, the beneficial effect having is: have simple in structure, reasonable in design, set reliable, well-flushing reliable, take advantage of the features such as pressure energy power is large, anticorrosive.
Accompanying drawing explanation
Fig. 1 is the structural representation of described packer.
Wherein: 1, top connection; 2, sealing ring; 3, backwash valve urceolus; 5, backwash spool; 7, exterior central tube; 8, protrusion-dispelling ring; 9, packing element; 10, packing element spacer ring; 11, middle packing element; 12, central tube; 13, upper liquid cylinder; 14, first piston cover; 15, middle plug pipe; 16, lock ring; 17, lock ring stop collar; 18, deblocking shear pin; 19, lower liquid cylinder; 20 set shear pin; 21, lower contact; 22, the second piston bush.
The specific embodiment
Packer as shown in the figure, comprise central tube 12, upper-part and lower member, central tube is provided with top and bottom, central tube upper and lower side is threaded connection with upper-part and lower member respectively, described upper-part comprises top connection 1, backwash valve urceolus 3, backwash spool 5, exterior central tube 7, protrusion-dispelling ring 8 and packing element 9, central tube interior diameter is 48mm, central tube material is 42CrMo, top connection material is 42CrMo, in top connection lower end central tube outside, be drilled with perforate, in top connection arranged outside, there is projection, sheathed backwash spool outside the central tube of top connection lower end, backwash valve core material is 3Cr13, in top connection outside, be arranged with backwash valve urceolus, backwash valve urceolus material is 3Cr13, at backwash valve urceolus middle part, annular evenly has through hole, inner side, the upper and lower two ends of backwash valve urceolus is provided with screw thread, backwash valve urceolus upper end is threaded with top connection, sheathed exterior central tube outside the central tube of backwash spool lower end, exterior central tube material is 42CrMo, exterior central tube upper end and backwash spool lower end snap-on design, exterior central tube upper end arranged outside has screw thread, outer center is connected with backwash valve urceolus lower end by screw thread, exterior central tube external diameter is at 110mm, in exterior central tube lower end, arranged outside is got out of a predicament or an embarrassing situation, protrusion-dispelling ring set is located at the inboard of getting out of a predicament or an embarrassing situation, packing element is set in exterior central tube lower end and engages with protrusion-dispelling ring, packing element designs for compartment, at middle packing element 11 and left and right sides packing element, with packing element spacer ring 10, separate, packing element diameter is 109mm, packing element spacer ring material is 35CrMo, sealing ring together with being provided with between backwash valve urceolus in top connection, sealing ring is all 0 RunddichtringO, sealing ring material is that hydrogenation fourth is fine, between backwash spool and central tube, be provided with two seals circle, between backwash spool and backwash valve urceolus, be provided with two seals circle, between backwash spool and exterior central tube, be provided with two seals circle 2, lower member comprises liquid cylinder 13, first piston cover 14, the second piston bush 22, middle plug pipe 15, lock ring 16, lock ring stop collar 17, deblocking shear pin 18, lower liquid cylinder 19, set shear pin 20 and lower contact 21, in central tube lower end, be connected with middle plug gas thread, central plug tube material is 42CrMo, in plug pipe upper end, centre, central tube arranged outside has lower STH, sheathed first piston cover outside the central tube of middle plug pipe upper end, piston bush material is 42CrMo, the sheathed lock ring in middle consent middle part, lock ring material is 65Mn, lock ring stop collar engages setting with lock ring, deblocking shear pin is filled on pipe in the middle of lock ring stop collar is fixed on, middle plug pipe lower end and lower contact are threaded connection, lower contact external diameter is 110mm, in the middle of lower contact upper end, plug pipe arranged outside has lower STH, sheathed the second piston bush in plug pipe outside in the middle of lower contact upper end, liquid cylinder on sheathed outside plug pipe in the middle of exterior central tube outside, upper liquid cylinder upper end and exterior central tube are threaded connection, upper liquid cylinder external diameter is 109mm, upper fluid cylinder liquid upper end exterior annular is evenly provided with through hole, lower contact arranged outside has projection, between lower contact projection and upper liquid cylinder, cover is set liquid cylinder, lower liquid cylinder is threaded connection with upper liquid cylinder and lower contact respectively, in lower liquid cylinder and lower contact junction, be provided with and set shear pin, sealing ring together with being provided with between first piston cover at upper liquid cylinder, sealing ring together with first piston cover is provided with between central tube, sealing ring together with upper liquid cylinder is provided with between middle plug pipe, sealing ring together with lower fluid cylinder liquid is provided with between the second piston bush, sealing ring together with the second piston bush is provided with between middle plug pipe, lower contact has sealing ring together with arranging with between lower liquid cylinder.
During work, packer is after projected depth, to filling liquid in oil pipe, under inside and outside differential pressure effect, backwash valve is closed, when pressure reaches 8～9MPa, set shear pin and cut off, set the piston compression packing element that moves up, make packing element Expansion sealing oil casing annular space; Meanwhile, the locking of lock ring and lock ring stop collar, can not throw off, packer deblocking voluntarily not after pressure release; During backwash: to oil casing annular space filling liquid, when hydraulic pressure reaches 1 .5～3MPa, flushing valve is opened, continue filling liquid, can realize anti-flushing well; Upper lifting pipe post 2～3t cuts off deblocking shear pin, continues upper lifting pipe post, removing seal for packer.
Claims (3)
1. a packer, comprise central tube, upper-part and lower member, central tube is provided with top and bottom, central tube upper and lower side is threaded connection with upper-part and lower member respectively, it is characterized in that: described upper-part comprises top connection, backwash valve urceolus, backwash spool, exterior central tube, protrusion-dispelling ring and packing element, in top connection lower end, central tube arranged outside has upper opening, in top connection arranged outside, there is projection, sheathed backwash spool outside the central tube of top connection lower end, in top connection outside, be arranged with backwash valve urceolus, backwash valve urceolus middle part annular is evenly provided with through hole, inner side, the upper and lower two ends of backwash valve urceolus is provided with screw thread, backwash valve urceolus upper end and top connection are threaded connection, sheathed exterior central tube outside the central tube of backwash spool lower end, exterior central tube upper end and backwash spool lower end snap-on design, exterior central tube upper end arranged outside has screw thread, outer center is connected with backwash valve urceolus lower end by screw thread, in exterior central tube lower end, arranged outside is got out of a predicament or an embarrassing situation, protrusion-dispelling ring set is located at the inboard of getting out of a predicament or an embarrassing situation, packing element is set in exterior central tube lower end and engages with protrusion-dispelling ring, between top connection and backwash valve urceolus, between backwash spool and central tube, between backwash spool and backwash valve urceolus, between backwash spool and exterior central tube, be respectively equipped with sealing ring.
2. packer as claimed in claim 1, it is characterized in that: described lower member comprises liquid cylinder, first piston cover, the second piston bush, middle plug pipe, lock ring, lock ring stop collar, deblocking shear pin, lower liquid cylinder, set shear pin and lower contact, in central tube lower end, be threaded connection with middle plug pipe, in plug pipe upper end, centre, central tube arranged outside has lower STH, sheathed first piston cover outside the central tube of middle plug pipe upper end, the sheathed lock ring in middle plug pipe middle part, lock ring stop collar engages setting with lock ring, deblocking shear pin is filled on pipe in the middle of lock ring stop collar is fixed on, middle plug pipe lower end and lower contact are threaded connection, in the middle of lower contact upper end, plug pipe arranged outside has lower STH, sheathed the second piston bush in plug pipe outside in the middle of lower contact upper end, liquid cylinder on sheathed outside plug pipe in the middle of exterior central tube outside, upper liquid cylinder upper end and exterior central tube are threaded connection, upper fluid cylinder liquid upper end exterior annular is evenly provided with through hole, lower contact arranged outside has projection, between lower contact projection and upper liquid cylinder, cover is set liquid cylinder, lower liquid cylinder is threaded connection with upper liquid cylinder and lower contact respectively, in lower liquid cylinder and lower contact junction, be provided with and set shear pin, between upper liquid cylinder and first piston cover, between first piston cover and central tube, between upper liquid cylinder and middle plug pipe, between lower liquid cylinder and the second piston bush, between the second piston bush and middle plug pipe, between lower contact and lower liquid cylinder, be respectively arranged with sealing ring.
3. packer as claimed in claim 2, is characterized in that: described backwash spool and backwash valve urceolus material are 3Cr13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320394814.9U CN203430467U (en) | 2013-07-02 | 2013-07-02 | Packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320394814.9U CN203430467U (en) | 2013-07-02 | 2013-07-02 | Packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203430467U true CN203430467U (en) | 2014-02-12 |
Family
ID=50059512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320394814.9U Expired - Fee Related CN203430467U (en) | 2013-07-02 | 2013-07-02 | Packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203430467U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112211587A (en) * | 2019-07-10 | 2021-01-12 | 中国石油天然气股份有限公司 | Packer (CN) |
-
2013
- 2013-07-02 CN CN201320394814.9U patent/CN203430467U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112211587A (en) * | 2019-07-10 | 2021-01-12 | 中国石油天然气股份有限公司 | Packer (CN) |
| CN112211587B (en) * | 2019-07-10 | 2022-08-05 | 中国石油天然气股份有限公司 | Packer (CN) |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140212 Termination date: 20190702 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |