CN201090175Y - Seal device for injecting-enveloping cement outside tube - Google Patents
Seal device for injecting-enveloping cement outside tube Download PDFInfo
- Publication number
- CN201090175Y CN201090175Y CNU2007200122979U CN200720012297U CN201090175Y CN 201090175 Y CN201090175 Y CN 201090175Y CN U2007200122979 U CNU2007200122979 U CN U2007200122979U CN 200720012297 U CN200720012297 U CN 200720012297U CN 201090175 Y CN201090175 Y CN 201090175Y
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- China
- Prior art keywords
- pipe
- rubber cylinder
- central tube
- central pipe
- joint
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- 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 - Fee Related
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Abstract
Disclosed is an external pipe plugging and cementing sealing apparatus used for well completion of an oil and water well in the oil field, which is composed of an upper joint, a central pipe, a bump-pressure seat, an upper rubber cylinder, a sliding bush, a lower rubber cylinder, a setting pin, a lower joint and a restoring spring: the upper joint and the central pipe adopt the threaded connection, the bump-pressure seat is nested in the central pipe and fixed by a pin, and upper and lower circulation ports are arranged on both the central pipe and the sliding bush; the upper rubber cylinder, the sliding bush and the lower rubber cylinder are respectively nested on the central pipe, then the spring is nested in the lower joint, and the lower joint is fixedly connected with the central pipe by a setting pin; and the apparatus solves the problem existing in the prior art that only one external pipe plug can be expanded once, and can realize the expansion of a plurality of external pipe plugs as one drilling, meanwhile, cement slurry can be injected into the outside of the casing at the upper part after the external plugging of an expansion pipe, and the cement slurry in the pipe can be cycled and replaced after well cementing, and the casing will not leave over cement slurry. The utility model can be widely used for well completion operations in the oil and water well in the oil field.
Description
Technical field:
The utility model relates to the pipe covering cementing sealing device that a kind of oilfield oil well completion is used.
Background technology:
At present oilfield oil well in the completion process external packer of pipe as the main tool of horizontal well selectivity completion, mostly be the mud expansion type in the past, because packing element is easy to damage, can only use as the short-term packing, want long-term packing annular space, just must adopt once can only an expand pipe of packing covering of cement paste expansion type, present employed packer, can't satisfy the construction needs of a plurality of pipe coverings of one-trip string expansion packing.
The utility model content:
The purpose of this utility model provides a kind of pipe covering cementing sealing device.This device solves the problem of managing covering of once can only expanding that exists in the prior art a plurality of pipe coverings that expand of can realizing making a trip for a time, can outside expansion tube, be honored as a queen simultaneously and upwards inject cement paste outside the parts casing pipe, and the circulation of well cementation back replaces out the cement paste in the pipe, can not stay cement paste in sleeve pipe.
The technical scheme that its technical problem that solves the utility model adopts is: pipe covering cementing sealing device is by top connection, central tube, impacting seat, last packing element, sliding sleeve, lower rubber cylinder, set pin, lower contact, back-moving spring is formed: top connection is adopted with central tube and is threaded, impacting seat is enclosed within uses dowel fixes in the central tube, be equipped with upper and lower circulation port on central tube and the sliding sleeve; Last packing element, sliding sleeve, lower rubber cylinder are enclosed within respectively on the central tube, again with spring housing in lower contact, lower contact is connected with setting dowel fixes with central tube; This device is achieved in that the pipe covering that will have landing nipple is connected on the design attitude of completion tubular column, is lowered to completion tubular column.A series of activities such as finish outstanding gown earlier and give up.To connect positioner under this device then, on meet under the cementing tubing string the most next pipe covering place.Utilize positioner and pipe outer seal up reservation the landing nipple location after, in the cementing tubing string, put into the drilling rod plug, inject cement paste, cut off the bruising pin when plug goes downwards to impacting seat, expose the cocycle hole of central tube, circulation port under the shutoff simultaneously.At this moment the mud in the cementing tubing string is replaced out only remaining cement paste.Press down the cementing tubing string, top connection drives central tube, goes up and exercise gluing tube and lower rubber cylinder expansion under packing element, the sliding sleeve, seals the annular space between this device and completion tubular column, because the relative motion of sliding sleeve and central tube, the circulation port on it also just in time communicates.At this moment Zhuan Zhi injection hole faces the injection hole of pipe covering.Inject cement paste, the expansion tube covering.Cement paste inject to finish to carry the cementing tubing string on the back, and packing element and lower rubber cylinder reset under the effect of back-moving spring, and circulation port on the central tube and the circulation port on the sliding sleeve are by the sealing ring packing.The upper lifting pipe post repeats aforesaid operations to a last pipe covering place, can satisfy the expand purpose of a plurality of pipe coverings of one-trip string.
The beneficial effects of the utility model are that this apparatus structure is simple, is convenient to operation; This device can cooperate with the intended orientation device when layering is cemented the well, and does not stay cement plug after the completion; Can bore the expansion of finishing a plurality of pipe coverings one time; This device can be reused.
Description of drawings:
Accompanying drawing is an overall structure schematic diagram of the present utility model.
Among the figure: 1, top connection, 2, central tube, 3, impacting seat, 4, go up packing element, 5, sliding sleeve, 6, lower rubber cylinder, 7, set pin, 8, lower contact, 9, back-moving spring.
The specific embodiment:
The utility model is provided by following examples, is illustrated below in conjunction with accompanying drawing.
As shown in the figure, manage covering cementing sealing device by top connection 1, central tube 2, impacting seat 3, last packing element 4, sliding sleeve 5, lower rubber cylinder 6 sets pin 7, lower contact 8, back-moving spring 9 is formed: top connection 1 is adopted with central tube 2 and is threaded, and impacting seat 3 is enclosed within uses dowel fixes in the central tube, is equipped with upper and lower circulation port on central tube 2 and the sliding sleeve 5; Last packing element 4, sliding sleeve 5, lower rubber cylinder 6 are enclosed within respectively on the central tube 2, spring 9 are enclosed within the lower contact 8 again, and lower contact 8 sets pin 7 with central tube 2 usefulness and fixedlys connected.
Claims (1)
1. manage covering cementing sealing device by top connection (1) for one kind, central tube (2), impacting seat (3), last packing element (4), sliding sleeve (5), lower rubber cylinder (6) sets pin (7), lower contact (8), back-moving spring (9) is formed; It is characterized in that: top connection (1) is adopted with central tube (2) and is threaded, and impacting seat (3) is enclosed within the central tube uses dowel fixes, is equipped with upper and lower circulation port on central tube (2) and the sliding sleeve (5); Last packing element (4), sliding sleeve (5), lower rubber cylinder (6) are enclosed within respectively on the central tube (2), spring (9) are enclosed within the lower contact (8) again, and lower contact (8) is fixedlyed connected with setting pin (7) with central tube (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200122979U CN201090175Y (en) | 2007-05-22 | 2007-05-22 | Seal device for injecting-enveloping cement outside tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200122979U CN201090175Y (en) | 2007-05-22 | 2007-05-22 | Seal device for injecting-enveloping cement outside tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201090175Y true CN201090175Y (en) | 2008-07-23 |
Family
ID=39861935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200122979U Expired - Fee Related CN201090175Y (en) | 2007-05-22 | 2007-05-22 | Seal device for injecting-enveloping cement outside tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201090175Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110469292A (en) * | 2019-08-05 | 2019-11-19 | 中国石油化工股份有限公司 | A kind of circulation envelope alters method |
| CN113404463A (en) * | 2020-03-16 | 2021-09-17 | 中国石油天然气股份有限公司 | Expansion pipe column |
-
2007
- 2007-05-22 CN CNU2007200122979U patent/CN201090175Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110469292A (en) * | 2019-08-05 | 2019-11-19 | 中国石油化工股份有限公司 | A kind of circulation envelope alters method |
| CN113404463A (en) * | 2020-03-16 | 2021-09-17 | 中国石油天然气股份有限公司 | Expansion pipe column |
| CN113404463B (en) * | 2020-03-16 | 2022-05-10 | 中国石油天然气股份有限公司 | Expansion pipe column |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080723 Termination date: 20110522 |