CN2846729Y - Controllable injecting cement circulation device - Google Patents
Controllable injecting cement circulation device Download PDFInfo
- Publication number
- CN2846729Y CN2846729Y CN 200520092748 CN200520092748U CN2846729Y CN 2846729 Y CN2846729 Y CN 2846729Y CN 200520092748 CN200520092748 CN 200520092748 CN 200520092748 U CN200520092748 U CN 200520092748U CN 2846729 Y CN2846729 Y CN 2846729Y
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- CN
- China
- Prior art keywords
- well
- utility
- model
- sealing
- cement
- 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 controllable cement injecting circulation device, which is used for well completion and cementing of well drilling engineering of oil wells and water wells. The controllable cement injecting circulation device is composed of an upper joint 1, an outer pipe 2, a sealing ring 3, a sealing sleeve 4 and a spring 5, wherein the upper end of the outer pipe 2 is connected and provided with the upper joint 1 by threads and the sealing sleeve 4 is arranged in the outer pipe 2; the spring 5 is arranged below the sealing sleeve 4 and the sealing ring 3 is arranged in a sealing ring groove of the excircle surface on the upper part of the sealing sleeve 4. The utility model has the advantages of simple structure, and can be matched with an internal insertion pipe and a cement injecting switch when a well is cemented by layers. After well completion, cement plugs can not be reserved, and at the same time, a circulation hole can be automatic sealed after outer force action is removed and cement slurry can not be inversely vomited. Construction technology can be simplified, construction period can be shortened and well drilling cost can be decreased by using the utility model.
Description
Technical field:
The utility model relates to a kind of downhole tool that is used for the well cementation of oil-water well drilling engineering completion.
Background technology:
Completion is one of of paramount importance operation in all multiple operation of whole oil-water well drilling engineering.At present, the completion method and the downhole tool of field by using are varied, adopt lower screen completion, top to hang with packer or finish with the cement paste sealing for various reasons usually for sidetracked hole.For the oil well of top with cement sealing, because downhole tool is limit, can in well, stay cement plug, thereby after completion, also want drilling out in the past, less because of the sidetracked hole borehole size again, bore comparatively difficulty of plug, drilling cost is increased, the construction period prolongs.
Summary of the invention:
The purpose of this utility model is to provide a kind of controlled cementing circulating device that can satisfy oil-water well location well cementation needs, can not stay cement plug in well.
The utility model is to realize like this.This kind cementing circulating device is made up of top connection, outer tube, sealing ring, sealing shroud and spring, and outer tube upper end is hinged with a top connection with screw thread, in sealing shroud is housed, spring is equipped with in the sealing shroud top, in the periphery seal groove of sealing shroud top sealing ring is housed.During construction, the top connection of device is hinged with on the completion tubular column precalculated position, be lowered to completion tubular column, simultaneously the cementing switch is connected on hanger and sends into tubing string bottom, finish the suspension of hanger earlier and give up, transfer then or on submit into tubing string to destination locations, utilize the positioner on the cementing switch to press down the interior sealing shroud of this device outer tube, sealing shroud compression spring is descending, exposes the circulation port on the outer tube, injects mud in annular space.After well cementation is finished, on carry interior tubing string, sealing shroud resets under the elastic force effect of spring, the circulation port of sealing on the outer tube, on submit into the tubing string circulation and wash out superfluous water mud in the well.
The utility model is simple in structure, can cooperate with interpolation pipe and cementing switch when layering is cemented the well, and does not stay cement plug after the completion, closed circulation hole voluntarily after power effect is outside simultaneously removed, cement paste can instead not told, and utilizes it can simplify construction technology, shorten the construction period, reduce drilling cost.
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, outer tube 2, sealing ring 3, sealing shroud 4 and spring 5, its structure, assembled relation are as follows: outer tube 2 upper ends are hinged with a top connection 1 with screw thread, in sealing shroud 4 is housed, spring 5 is equipped with in sealing shroud 4 belows, in the sealing shroud 4 top periphery seal grooves sealing ring 3 is housed.Wherein, outer tube 2 upper and lower ends are respectively equipped with internal thread and external screw thread, and tube wall upper edge, middle part is uniform a plurality of circulation eyelets circumferentially, and the bottom inner headed face is provided with the step of placing spring 5.Sealing shroud 4 is that a periphery is isometrical, the inner headed face bottom increases the sleeve body that a round platform is arranged at the bottom gradually, and its top periphery is provided with multiple-sealed ring recess.
Claims (1)
1, a kind of controlled cementing circulating device, form by top connection (1), outer tube (2), sealing ring (3), sealing shroud (4) and spring (5), it is characterized in that: outer tube (2) upper end is hinged with a top connection (1) with screw thread, in sealing shroud (4) is housed, spring (5) is equipped with in sealing shroud (4) below, in the periphery seal groove of sealing shroud (4) top sealing ring (3) is housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520092748 CN2846729Y (en) | 2005-09-24 | 2005-09-24 | Controllable injecting cement circulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520092748 CN2846729Y (en) | 2005-09-24 | 2005-09-24 | Controllable injecting cement circulation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2846729Y true CN2846729Y (en) | 2006-12-13 |
Family
ID=37512152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520092748 Expired - Fee Related CN2846729Y (en) | 2005-09-24 | 2005-09-24 | Controllable injecting cement circulation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2846729Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804690B (en) * | 2014-12-30 | 2018-08-21 | 新疆中核天山铀业有限公司 | In-situ leaching process drilling inverse water mud device |
-
2005
- 2005-09-24 CN CN 200520092748 patent/CN2846729Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804690B (en) * | 2014-12-30 | 2018-08-21 | 新疆中核天山铀业有限公司 | In-situ leaching process drilling inverse water mud 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: 20061213 Termination date: 20100924 |