CN201024972Y - An external sealer for fixing well pipe - Google Patents
An external sealer for fixing well pipe Download PDFInfo
- Publication number
- CN201024972Y CN201024972Y CNU2007200120225U CN200720012022U CN201024972Y CN 201024972 Y CN201024972 Y CN 201024972Y CN U2007200120225 U CNU2007200120225 U CN U2007200120225U CN 200720012022 U CN200720012022 U CN 200720012022U CN 201024972 Y CN201024972 Y CN 201024972Y
- Authority
- CN
- China
- Prior art keywords
- liquid cylinder
- ring
- sliding hoop
- sleeve
- sealing
- 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 - Fee Related
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Abstract
The utility model relates to a packing device outside a well fixing pipe, consisting of an upper joint, a body, a liquid cylinder, a fixing nail, a sealing ring, a piston, a cutting bole, a return stopping ring, a return stopping sleeve, an upper sealing sleeve, a sliding hoop, a sliding hoop cutting nail, a lower sealing sleeve, a fixing base and a lower joint. The upper and the lower ends of the body are respectively connected with the upper and the lower joints through a screw thread, and the outside of the body is coated with the liquid cylinder and connected with the liquid cylinder through the fixing nail. The inner side of the liquid cylinder is provided with the sealing ring to achieve the seal. The ring-shaped cavity between the body and the liquid cylinder is provided with a piston and fixed through the cutting bolt. The body part under the liquid cylinder is circled with the return stopping ring under which is protected and fixed by the return stopping sleeve. The body part under the return stopping sleeve is orderly circled with the upper sealing sleeve, the sliding hoop and the lower sealing sleeve, with the lower part fixedly connected with the body through a screw thread and the sliding hoop fixed through the cutting nail. The packing device is novel in design, simple in structure, convenient in use and reliable in work, can achieve the effective sealing of the ground during the well fixation with the affused mud and the permanence seal of the ground, thus preventing the misplacement of the layers.
Description
Technical field:
The utility model relate to a kind of be used for oil, the ore deposit bore the downhole tool of completion, belong to drilling completion instrument class.
Background technology:
In oil development, geological prospecting drilling completion well cementation process, in order to separate complex high voltage stratum, down-hole, prevent that interlayer from scurrying mutually, need to adopt mechanical means guarantee permanent packing.At present, on-the-spot hydraulic expansion type or the packing element squash type external casing packer of adopting usually achieves the above object.But, no matter the former is to use drilling fluid or cement paste to come the filling expansion capsule, all exist the instrument complexity, shortcoming such as bearing capacity is low, capsules break happens occasionally, success rate and the degree of reliability are low, though and capsules break does not take place in the latter, but the expansion external diameter is little, the general very difficult production needs that satisfy.
The utility model content:
The purpose of this utility model is to provide a kind of simple in structure, easy to use, reliable operation, the stratum of packing forever, prevents the well cementation external packer of pipe that interlayer is scurried mutually.
The utility model is to realize like this.
This kind external packer of pipe by upper and lower joint, body, fluid cylinder, staple, sealing ring, piston, shear pin, retaining ring, retaining cover, upper and lower sealing shroud,, sliding hoop, sliding hoop shear pin, holder are formed, and the body upper and lower end is respectively with top connection and the lower contact of being threaded; The body outside is set with fluid cylinder and is connected and fixed with staple, and the fluid cylinder inboard is provided with sealing ring and realizes sealing; Be provided with piston in the annular space between body and the fluid cylinder, and fix, seal by sealing ring with shear pin; The body of fluid cylinder below is set with a retaining ring that the internal thread opening is arranged outward, and the below is fixing with the protection of retaining cover; External upper sleeve gasket, sliding hoop and the lower sleeve gasket of being set with successively of the basis of retaining cover below, the lower end is connected and fixed with screw thread and body with holder, and sliding hoop is fixed by shear pin.During well cementing operation, after this packer was finished cementing well to desired depth down with sleeve pipe, giving builds the pressure in the body made plunger booster, and shear pin is cut off during to certain pressure, and piston promotes retaining ring, thrust housing, and upper sleeve gasket moves axially downwards, is inserted in sliding hoop; When thrust reached certain numerical value, sliding hoop shear pin was cut off, and together enters lower sleeve gasket, forms bigger external diameter, thereby annular space is sealed; After finishing the cementing operation operation, wait to the cement solidifies, this packer can be realized permanent up and down packing.
The utility model modern design, simple in structure, easy to use, reliable operation, utilize it can be when the cementing well operation effective packing stratum, and can realize permanent packing stratum, prevent that interlayer from scurrying mutually.
Description of drawings:
Accompanying drawing is a general structure schematic diagram of the present utility model.
The specific embodiment:
The utility model is provided by following examples, is illustrated below in conjunction with accompanying drawing.
As shown in the figure, the utility model is made up of top connection 1, body 2, fluid cylinder 3, staple 4, sealing ring 5, piston 6, shear pin 8, retaining ring 9, retaining cover 10, upper sleeve gasket 11, sliding hoop 12, sliding hoop shear pin 13, lower sleeve gasket 14, holder 15 and lower contact 16, and its structure, assembled relation are as follows: body 2 upper and lower ends are respectively with top connection 1 and the lower contact 16 of being threaded; Body 2 outsides are set with fluid cylinder 3 and are connected and fixed with staple 4, and fluid cylinder 3 inboards are provided with sealing ring 5 and realize sealing; Be provided with piston 7 in the annular space between body 2 and the fluid cylinder 3, and fixing with shear pin 8, seal by sealing ring; Be set with a retaining ring 9 that the internal thread opening is arranged outside the body 2 of fluid cylinder 3 belows, the below is fixing with 10 protections of retaining cover; Retaining overlaps outer upper sleeve gasket 11, sliding hoop 12 and the lower sleeve gaskets 14 of being set with successively of body 2 of 10 belows, and the lower end is connected and fixed with screw thread and body 2 with holder 15, slides to bind round 12 and fixed by shear pin.Wherein, body 2 is a pipe body, and its upper and lower end is respectively equipped with the band tapering, has the pin thread of self seal, and upper portion side wall is provided with liquid-through hole 6.Fluid cylinder 3 tops are provided with the staple hole, and inner headed face is provided with step, match with piston 7, and the outer step of piston 7 bottom bands, and be provided with shear pinhole.Sliding hoop 12 is upper and lower to be the inclined-plane, matches with upper sleeve gasket 11, lower sleeve gasket 14 respectively, and the middle part is provided with the shear pin hole.
Claims (1)
- One kind the well cementation external packer of pipe, be made up of top connection (1), body (2), fluid cylinder (3), staple (4), sealing ring (5), piston (6), shear pin (8), retaining ring (9), retaining cover (10), upper sleeve gasket (11), sliding hoop (12), sliding hoop shear pin (13), lower sleeve gasket (14), holder (15) and lower contact (16), it is characterized in that: body (2) upper and lower end is respectively with top connection that has been threaded (1) and lower contact (16); Body (2) outside is set with fluid cylinder (3) and is connected and fixed with staple (4), and fluid cylinder (3) inboard is provided with sealing ring (5) and realizes sealing; Be provided with piston (7) in the annular space between body (2) and the fluid cylinder (3), and fixing with shear pin (8), seal by sealing ring; Be set with a retaining ring (9) that the internal thread opening is arranged outside the body (2) of fluid cylinder (3) below, the below is fixing with retaining cover (10) protection; Outer upper sleeve gasket (11), sliding hoop (12) and the lower sleeve gasket (14) of being set with successively of the body (2) of retaining cover (10) below, the lower end is connected and fixed with screw thread and body (2) with holder (15), and sliding hoop (12) is fixed by shear pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200120225U CN201024972Y (en) | 2007-05-10 | 2007-05-10 | An external sealer for fixing well pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200120225U CN201024972Y (en) | 2007-05-10 | 2007-05-10 | An external sealer for fixing well pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201024972Y true CN201024972Y (en) | 2008-02-20 |
Family
ID=39098829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200120225U Expired - Fee Related CN201024972Y (en) | 2007-05-10 | 2007-05-10 | An external sealer for fixing well pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201024972Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107269246A (en) * | 2017-08-09 | 2017-10-20 | 新疆永升能源有限责任公司 | A kind of cementing tool |
| CN110905442A (en) * | 2019-12-12 | 2020-03-24 | 中国石油集团渤海钻探工程有限公司 | Empty cement paste of sleeve pipe outer loop fills packer |
| CN114233237A (en) * | 2021-12-31 | 2022-03-25 | 盘锦博程实业有限公司 | Laminated expanding type temperature control sealing device |
-
2007
- 2007-05-10 CN CNU2007200120225U patent/CN201024972Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107269246A (en) * | 2017-08-09 | 2017-10-20 | 新疆永升能源有限责任公司 | A kind of cementing tool |
| CN110905442A (en) * | 2019-12-12 | 2020-03-24 | 中国石油集团渤海钻探工程有限公司 | Empty cement paste of sleeve pipe outer loop fills packer |
| CN110905442B (en) * | 2019-12-12 | 2022-04-01 | 中国石油集团渤海钻探工程有限公司 | Empty cement paste of sleeve pipe outer loop fills packer |
| CN114233237A (en) * | 2021-12-31 | 2022-03-25 | 盘锦博程实业有限公司 | Laminated expanding type temperature control sealing device |
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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: 20080220 Termination date: 20110510 |