CN201292801Y - Suspension type oil layer protection packer - Google Patents
Suspension type oil layer protection packer Download PDFInfo
- Publication number
- CN201292801Y CN201292801Y CNU2008202288278U CN200820228827U CN201292801Y CN 201292801 Y CN201292801 Y CN 201292801Y CN U2008202288278 U CNU2008202288278 U CN U2008202288278U CN 200820228827 U CN200820228827 U CN 200820228827U CN 201292801 Y CN201292801 Y CN 201292801Y
- Authority
- CN
- China
- Prior art keywords
- sub
- top connection
- layer protection
- packing element
- oil layer
- 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
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Abstract
The utility model relates to a packer, in particular to a suspended oil-layer protection packer which is used for protecting the underground oil layer and is suitable for low-pressure wells or water-sensitive oil pools. The suspended oil-layer protection packer comprises a releasing joint, an anti-rotating key, bolts, an upper joint, a sliding sleeve, a shear pin, a pressure cap, a seal gasket, a central tube, a bushing, a leather-cup packing element, a conical body, a kava assembly and a lower joint, wherein a groove is arranged at the inner side of the upper part of the upper joint, the upper end of the sliding sleeve is inserted into the releasing sub, the sliding sleeve is fixed on the upper joint, the upper joint is connected with the pressure cap, the conical body is sleeved on the leather-cup packing element and is directly connected with the bushing, and the bushing, the leather-cup packing element, the conical body and the kava assembly are sleeved on the central tube. The suspended oil-layer protection packer has reasonable and compact structure, flexible structure conversion, reliable self-packing element sealing and can either release or not release and avoid producing suction in the working of stripping a pipe column due to the design of a drainage channel. The utility model is convenient for construction working procedures, protects the oil layer and can satisfy the flushing and oil-extracting requirements.
Description
One, technical field
The utility model relates to a kind of packer, is a kind of hanging type oil layer protection packer, is specially adapted to the down-hole oil layer protection packer of low pressure well or water sensitivity oil reservoir.
Two, technical background
Along with Oilfield developing, increasing for low pressure well and water sensitivity oil reservoir development difficulty.In normal hot-washing wax remover operation, tend to occur the hot washing lotion stratum of bleeding, pollute reservoir, the phenomenon that oil-gas Layer kills can occur when serious.
Three, summary of the invention
The purpose of this utility model is to provide a kind of oil layer protection packer, has overcome above-mentioned prior art deficiency, simplifies working procedure, satisfies the hanging type oil layer protection packer of well-flushing, oil recovery, the requirement of test producing fluid level.
The technical solution of the utility model realizes by following measure: hanging type oil layer protection packer comprises back-off sub, antirotation keys, screw, top connection, sliding sleeve, shear pin, pressure cap, sealing mat, central tube, lining, leather cup formula packing element, cone, slips assembly and lower contact.Boss is arranged at the bottom of back-off sub, top connection top inboard fluted, and the boss that the groove that makes top connection in the back-off sub can block back-off sub can be inserted in the sliding sleeve upper end; Sliding sleeve is fixed in the top connection with shear pin; Antirotation keys is screwed in back-off sub, and back-off sub can be by antirotation keys to the top connection transfer torque; Boss is arranged in the top connection, can drop on after sliding sleeve is hit down on the boss, steel ball and sliding sleeve are combined to form ball-and-seat; Top connection directly links to each other with pressure cap, in sealing mat is housed; There is leakage opening at the top connection middle part; Lining is contained in the leather cup formula packing element, and cone is enclosed within on the leather cup formula packing element and with lining and directly is connected; Lining, leather cup formula packing element, cone and slips assembly are enclosed within on the central tube; Central tube top directly links to each other with the top connection bottom, and the central tube bottom directly links to each other with lower contact.
Be further optimization and improvement below to above-mentioned utility model technical scheme:
Above-mentioned slips assembly cooperates with three track boss in the lower contact finishes setting and the deblocking action of slips assembly; The lower end design of top connection has leakage opening, and bushing pipe is up can close leakage opening with the sealing mat effect.
Boss is arranged at the bottom of above-mentioned back-off sub, top connection top inboard fluted.
Insert in the back-off sub above-mentioned sliding sleeve upper end, makes the groove of top connection can block the boss of back-off sub.
The leakage opening at above-mentioned top connection middle part does not produce swabbing action in the rountrip process.
Above-mentioned antirotation keys is screwed in back-off sub, back-off sub by antirotation keys to the top connection transfer torque.
The utility model is that the structure of giving up, packing structure, one-way valve structures three parts are integrated, thus possessed can packing the protection oil reservoir, prevent that flushing fluid from entering the stratum, satisfying characteristics such as well-flushing requirement; Instrument can be given up and also can not given up, and Structure Conversion is flexible; Instrument adopts the sealing of leather cup formula packing element reliable, and packer sealing does not need to discharge than multi-load, can effectively prevent oil pipe, sucker rod partial wear and improves the oil pumping effect of pump; Design has leakage opening in the tool construction, has characteristics such as can not producing swabbing action in playing the lower tubular column process.
Four, description of drawings
Accompanying drawing is the utility model half section structural representation.
Encode in the accompanying drawing: 1 is back-off sub, and 2 is antirotation keys, and 3 is screw, and 4 is " zero " shape sealing ring, and 5 are top connection, 6 is sliding sleeve, and 7 is shear pin, and 8 is pressure cap, and 9 is sealing mat, and 10 is central tube, 11 is lining, and 12 is that leather cup formula packing element 13 is cone, and 14 is the slips assembly, and 15 are lower contact.
Five, the specific embodiment
The utility model is not subjected to the restriction of following embodiment, can determine concrete embodiment according to the technical solution of the utility model and actual conditions.
Below in conjunction with embodiment and accompanying drawing the utility model is further described:
The concrete application of the utility model most preferred embodiment is as follows: during the tubing string work of giving up construction; tail pipe, hanging type oil layer protection packer, oil pipe are connected successively by order from the bottom up; and in the steady lower going-into-well; after tubing string puts in place, on carry and just change tubing set packer, then from the oil pipe pitching; treat to suppress 5～10MPa after ball puts in place; band presses and carries, and releases as pressure, proves that then packer gives up and be suspended on the sleeve pipe.The upper lifting pipe post, following pumping pipe string, completion.When needing to salvage, propose pumping pipe string earlier, be lowered to special-purpose fishing tool again, transfer, packer is dragged for, propose pit shaft then while washing.
In the tubing string work of not giving up when construction, connect tail pipe, hanging type oil layer protection packer (dribbling), screen casing, oil well pump, oil pipe successively by order from the bottom up, and in the steady lower going-into-well, after tubing string puts in place, on carry and just change tubing set packer, completion.During deblocking, carry pumping pipe string on directly.
Claims (7)
1, a kind of hanging type oil layer protection packer is characterized in that comprising back-off sub, antirotation keys, screw, top connection, sliding sleeve, shear pin, pressure cap, sealing mat, central tube, lining, leather cup formula packing element, cone, slips assembly and lower contact; Back-off sub is inserted in the sliding sleeve upper end, and sliding sleeve and top connection shear pin are fixed; Antirotation keys is screwed in back-off sub, back-off sub by antirotation keys to the top connection transfer torque; Between top connection and the pressure cap sealing device is arranged; Lining is contained in the leather cup formula packing element, and cone is enclosed within on the leather cup formula packing element and with lining and is connected; Lining, leather cup formula packing element, cone and slips assembly are enclosed within on the central tube; Central tube top links to each other with the top connection bottom, and the central tube bottom links to each other with lower contact.
2, hanging type oil layer protection packer according to claim 1 is characterized in that boss is arranged at the bottom of back-off sub, top connection top inboard fluted.
3, hanging type oil layer protection packer according to claim 1 and 2 is characterized in that sliding sleeve upper end inserts in the back-off sub, makes the groove of top connection can block the boss of back-off sub.
4, hanging type oil layer protection packer according to claim 1 is characterized in that there is leakage opening at the top connection middle part.
5, hanging type oil layer protection packer according to claim 1 is characterized in that leather cup formula packing element adopts self-styled sealing.
6, according to claim 1 or 4 described hanging type oil layer protection packers, it is characterized in that the leakage opening at top connection middle part, in the rountrip process, can not produce swabbing action.
7, hanging type oil layer protection packer according to claim 1 is characterized in that antirotation keys is screwed in back-off sub, back-off sub by antirotation keys to the top connection transfer torque.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202288278U CN201292801Y (en) | 2008-11-29 | 2008-11-29 | Suspension type oil layer protection packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202288278U CN201292801Y (en) | 2008-11-29 | 2008-11-29 | Suspension type oil layer protection packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201292801Y true CN201292801Y (en) | 2009-08-19 |
Family
ID=41006276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202288278U Expired - Lifetime CN201292801Y (en) | 2008-11-29 | 2008-11-29 | Suspension type oil layer protection packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201292801Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101748991A (en) * | 2008-11-29 | 2010-06-23 | 新疆石油管理局采油工艺研究院 | Hanging type oil layer protection packer |
-
2008
- 2008-11-29 CN CNU2008202288278U patent/CN201292801Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101748991A (en) * | 2008-11-29 | 2010-06-23 | 新疆石油管理局采油工艺研究院 | Hanging type oil layer protection packer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090819 |