CN2693940Y - Compression high temperature steam injection packer - Google Patents
Compression high temperature steam injection packer Download PDFInfo
- Publication number
- CN2693940Y CN2693940Y CN 200420031081 CN200420031081U CN2693940Y CN 2693940 Y CN2693940 Y CN 2693940Y CN 200420031081 CN200420031081 CN 200420031081 CN 200420031081 U CN200420031081 U CN 200420031081U CN 2693940 Y CN2693940 Y CN 2693940Y
- Authority
- CN
- China
- Prior art keywords
- packer
- packing element
- well
- cap
- central tube
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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 - Lifetime
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Abstract
The utility model relates to a compression type high temperature steam filling packer used in a thickened oil steam filling well, which is composed of an upper joint 1, a center pipe 2, a rubber cylinder 3, a positioning ring 4, a spring support 5, a compression spring 6, a moving ring 7, a downward pressing cap 8 of the rubber cylinder and an adjusting cap 9. The packer has the advantages of reasonable design, compact structure and reliable operation. Because of the improvement on the structure, the packer can be used in the courses of lifting operation and descending operation to avoid the loss of parts and components and a well clamping accident, and the utility model can also improve the success rate of sealing and sealing effect and can shorten sealing time. Because a telescopic pipe is cancelled, the packer is convenient to construct, and the cost is reduced. The packer which has a large range of use can be used normally in a well with a bad sleeve tube status and in an aged well and can be used repeatedly in the course of steam filling for three times underground.
Description
Technical field:
The utility model relates to a kind of downhole packing instrument that is used for heavy oil exploitation via steam injection.
Background technology:
The steam injection heating exploitation is the main development scheme of viscous crude field.At present, the heat extraction by steam injection packer pattern of field by using is a lot of, wherein most importantly three kinds of mechanical type, heat expansion type and thermometal packers.These thermal packers respectively have characteristics, but also have following shortcoming respectively: seat envelope success rate is low or the seat envelope is not tight; Seat envelope required time is long; Packing pressure is low, and heatproof is low; The rountrip process is easily lost component, easily causes card well accident; Have long telescoping tube, operation inconvenience and cost are higher; Structure and sealing surface are not too reasonable.These disadvantages affect the result of use of existing various thermal packers, and its application is restricted.
Summary of the invention:
The purpose of this utility model is to provide a kind of can overcome the existing above-mentioned shortcoming of thermal packer, the high effective compression high temperature steam injection packer of seat envelope success rate.
The utility model is to realize like this.This kind packer is made up of top connection, central tube, packing element, locating ring, latch bracket, stage clip, loose collar, packing element lower pressing cap, adjusting cap, the central tube upper end is connected to top connection with screw thread, the middle part is set with packing element, the packing element below is provided with the packing element lower pressing cap, and the lower pressing cap below is provided with the adjusting cap that is installed on the central tube periphery; Be provided with latch bracket and stage clip in the packing element lower cavity, the latch bracket upper and lower is respectively equipped with locating ring and loose collar.Because top connection, packing element lower pressing cap and adjusting cap outer are processed as the circular arc of certain angle respectively, thereby make packer be convenient on the whole remove, can be smoothly by box cupling and casing deformation place, thus can significantly reduce card well accident, regulate cap and also can play the effect of setting upright central tube.In addition,, can play spacing and assurance machine and stop the effect of integrality, thereby avoid in removing the construction operation process, losing parts, reach the purpose that reduces card well accident owing to be provided with locating ring in the packing element lower cavity.The bottoming hole that is provided with on locating ring, the loose collar then can effectively improve seat envelope success rate and seat envelope effect, shortens the seat envelope time.
The utility model is reasonable in design, compact conformation, reliable operation, because structural improvement, utilize it can in the rountrip process, avoid component to lose and block the well accident, and can improve a seat envelope success rate and seat seals an effect, shorten the seat envelope time, owing to cancelled telescoping tube, but convenient construction also reduces cost.This kind packer scope of application is big, can normally use in poor shape at sleeve pipe, the aging well, and can annotate in the process of three-wheel vapour in the down-hole, reuses.
Description of drawings:
Accompanying drawing is a structural representation 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, central tube 2, packing element 3, locating ring 4, latch bracket 5, stage clip 6, loose collar 7, packing element lower pressing cap 8 and adjusting cap 9, its structure, assembled relation are as follows: central tube 2 upper ends are connected to top connection 1 with screw thread, the middle part is set with packing element 3, packing element 3 belows are provided with packing element lower pressing cap 8, and the lower pressing cap below is provided with the adjusting cap 9 on central tube 2 peripheries with screw thread and anti-loosening dowel fixes; Be provided with latch bracket 5 and stage clip 6 in packing element 3 lower cavity, latch bracket 5 upper and lowers are respectively equipped with locating ring 4 and the loose collar 7 that is inlaid on the central tube 2 periphery grooves.Wherein, top connection 1 material is 35CrMo, and the top inner headed face is provided with 4 , and " inclined to one side ladder lock, the bottom inner headed face is 27/8, and " TBG detains, 15～20 ° of circular arcs of outer band.Central tube 2 materials are 35CrMo, and its upper and lower end is respectively equipped with 27/8, and " TBG button, middle part sidewall are provided with two groups and are used for the groove of setting-in locating ring 4 and loose collar 7 and the side opening that communicates with bottoming hole on it respectively, and periphery is provided with and regulates cap 9 and be connected and use screw thread.Packing element 3 materials are poly-tetrafluoro rubber, and it is bowl-shape to be hollow, and inside and outside disc size matches with central tube 2 and top connection 1 respectively.Locating ring 4, loose collar 7 are all done with the 45# steel, and the two shape is identical, and is relative up and down, is equipped with laterally to add heat through-hole.Regulating cap 9 is a hollow calyptra, and it is conical that its periphery is, and inner headed face is provided with the internal thread that matches with central tube 2 peripheries, wherein is provided with the anti-loosening steady pin hole of using.
Claims (1)
1, a kind of compression high temperature steam injection packer, form by top connection (1), central tube (2), packing element (3), locating ring (4), latch bracket (5), stage clip (6), loose collar (7), packing element lower pressing cap (8) and adjusting cap (9), it is characterized in that: central tube (2) upper end is connected to top connection (1) with screw thread, the middle part is set with packing element (3), packing element (3) below is provided with packing element lower pressing cap (8), and the lower pressing cap below is provided with the adjusting cap (9) on central tube (2) periphery with screw thread and dowel fixes; Be provided with latch bracket (5) and stage clip (6) in packing element (3) lower cavity, latch bracket (5) upper and lower is respectively equipped with locating ring (4) and the loose collar (7) that is inlaid on central tube (2) the periphery groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420031081 CN2693940Y (en) | 2004-04-06 | 2004-04-06 | Compression high temperature steam injection packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420031081 CN2693940Y (en) | 2004-04-06 | 2004-04-06 | Compression high temperature steam injection packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2693940Y true CN2693940Y (en) | 2005-04-20 |
Family
ID=34772297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420031081 Expired - Lifetime CN2693940Y (en) | 2004-04-06 | 2004-04-06 | Compression high temperature steam injection packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2693940Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100390371C (en) * | 2006-03-01 | 2008-05-28 | 潘昌德 | Compressed high-temperature packer with gas propelling |
| CN101684728B (en) * | 2009-05-07 | 2013-04-10 | 中国石油辽河油田钻采工艺研究院 | Gas injection steam umbrella of horizontal well |
| CN101555778B (en) * | 2009-05-18 | 2013-08-07 | 中国石油辽河油田钻采工艺研究院 | External packer of high temperature pipe |
| CN103277055A (en) * | 2013-06-04 | 2013-09-04 | 中国海洋石油总公司 | Tubing centralizer |
-
2004
- 2004-04-06 CN CN 200420031081 patent/CN2693940Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100390371C (en) * | 2006-03-01 | 2008-05-28 | 潘昌德 | Compressed high-temperature packer with gas propelling |
| CN101684728B (en) * | 2009-05-07 | 2013-04-10 | 中国石油辽河油田钻采工艺研究院 | Gas injection steam umbrella of horizontal well |
| CN101555778B (en) * | 2009-05-18 | 2013-08-07 | 中国石油辽河油田钻采工艺研究院 | External packer of high temperature pipe |
| CN103277055A (en) * | 2013-06-04 | 2013-09-04 | 中国海洋石油总公司 | Tubing centralizer |
| CN103277055B (en) * | 2013-06-04 | 2015-04-08 | 中国海洋石油总公司 | Tubing centralizer |
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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 | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140406 Granted publication date: 20050420 |