CN203756109U - Oil pressure contraction active compensation rubber core for active seal type rotation blowout preventer - Google Patents
Oil pressure contraction active compensation rubber core for active seal type rotation blowout preventer Download PDFInfo
- Publication number
- CN203756109U CN203756109U CN201420168640.9U CN201420168640U CN203756109U CN 203756109 U CN203756109 U CN 203756109U CN 201420168640 U CN201420168640 U CN 201420168640U CN 203756109 U CN203756109 U CN 203756109U
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- China
- Prior art keywords
- glue
- blowout preventer
- active
- core
- rubber core
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- Expired - Fee Related
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model relates to an oil pressure contraction active compensation rubber core for an active seal type rotation blowout preventer. The rubber core comprises a main rubber core (1) and a rubber ring (2), wherein the rubber ring (2) is sleeved on the outside of the main rubber core (1). Bolts (3) are arranged on the upper portion of the main rubber core (1), and an inward cambered groove is formed in the periphery of the outside of the rubber ring (2). By means of the rubber core, the main rubber core can hold a seal drill tightly and rotate synchronously along with a rotation assembly to bear the drill passing friction resistance; besides, by the aid of the rubber ring and a rubber ring framework, the seal is guaranteed, and leakage is prevented; by means of the rubber core, automatic compensation can be achieved, the service life is greatly prolonged, the rubber core can be changed conveniently in site, the rotation seal performance of the rotation blowout preventer is improved, and field usage is met.
Description
Technical field
The utility model belongs to oilfield machinery field, relates to a kind of realizing active sealing formula rotating blowout preventer oil pressure and shrinks Active Compensation formula glue core.
Background technology
Rotating blowout preventer is at well head, to play the under balance pressure drilling special equipment of rotatory sealing effect.Different according to glue core sealing means, be divided into active and passive type.Active rotating blowout preventer can be initiatively the deformation of control glue core, implement switch motion, and adjust in real time its sealing load, to reach the object of holding and seal drill string tightly initiatively.
Passive type rotating blowout preventer relies on the interference fit between glue core and drill string, the passive sealing drill string of holding tightly.Existing passive type rotating blowout preventer rubber core is compensatory pressure on one's own initiative, and the glue core serious wear that makes a trip for a long time, causes producing gap between glue core and drill string, thereby cause seal failure.If change glue core, will cause cycle interruption, particularly in horizontal well and extended reach well, easily cause down-hole complicated, must rise and get into certain depth and can change.To greatly reduce production timeliness like this.
Active rotating blowout preventer equipment is still continued to use the tactic pattern of " rotation universal blowout preventer ", and application performance develops to maturing.Typically be represented as the Shaffer PTWD of U.S. varco company series rotating blowout preventer and the active rotating blowout preventer of domestic FX28-35 type.Above-mentioned active rotating blowout preventer exists active glue core volume large (diameter reach φ 700mm more than), Heavy Weight, scene to change the problem of glue core difficulty, once glue core lost efficacy in drilling process, rotating blowout preventer cannot sealing wellhead.Therefore, need to design a kind of device to overcome the problems referred to above.
Summary of the invention
The purpose of this utility model is to provide a kind of realizing active sealing formula rotating blowout preventer oil pressure and shrinks Active Compensation formula glue core, overcome existing glue core and cannot realize auto-compensation, and application life short problem.
The utility model is achieved through the following technical solutions: realizing active sealing formula rotating blowout preventer oil pressure shrinks Active Compensation formula glue core, comprises main glue core and glue ring two parts, and it is outside that glue ring set is contained in main glue core; Bolt is equipped with on described main glue core top, and glue ring external circumferential has inside arc-shaped recess.
Further, described main glue core external circumferential has inside inclined plane, and glue ring inner side is provided with inclined plane, to match with the inclined plane in main glue core outside.
Further, all there is the sealing lip of outside extension in described glue ring upper/lower terminal outside.
Further, between the sealing lip of described glue ring upper/lower terminal, be also provided with glue ring skeleton, glue ring skeleton comprises two extrusion rings and a plurality of support column welding together, and a plurality of support columns are looped around glue ring periphery and by two extrusion rings, compress the sealing lip of glue ring upper/lower terminal.
Further, described support column is 6.
Adopt the good effect of technique scheme: the utility model can guarantee that main glue core is when holding sealing drilling tool tightly, can bear the frictional resistance that drilling tool passes through, and guarantee sealing by glue ring and glue ring skeleton with rotation assembly synchronous rotary, prevent seepage; This glue core can be realized auto-compensation, and greatly extend application life, and conveniently carries out scene and change the operation of glue core, strengthens the rotatory sealing performance of rotating blowout preventer, meets on-the-spot use.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is use schematic diagram of the present utility model;
Fig. 3 is the top view of Fig. 2.
In figure, 1 main glue core, 2 glue rings, 3 bolts, 4 sealing lips, 5 extrusion rings, 6 support columns, 7 active rotation assemblies, 8 hydraulic system side-entrances, 9 realizing active sealing formula rotating blowout preventer housings, 10 adpting flanges, 11 fluid cylinder holding cards.
The specific embodiment
below in conjunction with accompanying drawing, the technical solution of the utility model is described further, but should not be construed as restriction of the present utility model:
Fig. 1 is structural representation of the present utility model, and as shown in the figure, realizing active sealing formula rotating blowout preventer oil pressure shrinks Active Compensation formula glue core, comprises main glue core 1 and glue ring 2 two parts, and glue ring 2 is sleeved on main glue core 1 outside; Bolt 3 is equipped with on described main glue core 1 top, is convenient to main glue core and is connected with active rotation assembly, and glue ring 2 external circumferential have inside arc-shaped recess, thereby forms the hydraulic cavities of holding hydraulic oil.
In order to compress main glue core, described main glue core 1 external circumferential has inside inclined plane, and glue ring 2 inner sides are provided with inclined plane, to match with the inclined plane in main glue core 1 outside.
In order further to guarantee sealing effectiveness, all there is the sealing lip 4 of outside extension in described glue ring 2 upper/lower terminal outsides, gain in strength, and prevent seepage.
Further, between the sealing lip 4 of described glue ring 2 upper/lower terminals, be also provided with glue ring skeleton, glue ring skeleton comprises two extrusion rings 5 and a plurality of support column 6 welding together, and a plurality of support columns 6 are looped around glue ring 2 peripheries and by two extrusion rings 5, compress the sealing lip 4 of glue ring 2 upper/lower terminals.After glue ring is installed during in axial compression state, glue ring skeleton externally under the extruding of load, compresses glue ring sealing lip, guarantees that sealing lip can effectively seal, and avoids sealing lip to move inward simultaneously and causes seepage.In the present embodiment, described support column 6 is 6.
Fig. 2 is use schematic diagram of the present utility model, and Fig. 3 is the top view of Fig. 2, shown in Fig. 2, Fig. 3, during installation, first by handlance, controls fluid cylinder holding card 11 and opens, and active rotation assembly 7 is positioned over to realizing active sealing formula rotating blowout preventer housing 9 inside.By handlance, control fluid cylinder holding card and close, finally realizing active sealing formula rotating blowout preventer bottom adpting flange 10 is connected with the rotating blowout preventer group flange face of well head.The utility model is positioned at active rotation assembly bottom, is its inner crucial sealing execution unit.External hydraulic system is injected hydraulic oil by hydraulic system side-entrance 8 hydraulic cavities in glue ring outside, under the effect of sealing lip and glue ring skeleton, hydraulic oil in hydraulic cavities is accumulated gradually, pressure raises gradually, glue hoop internal contraction, thus main glue core compressed, when therefore main glue core possesses contractile function, keep synchronous rotary with active rotation assembly again, and then realize rotatory sealing function.Once hydraulic system pressure release, under the effect of main glue core self tension force, main glue core can return to original dimension, guarantees passing through smoothly of drilling tool.Replacing of the present utility model can be realized by changing a whole set of active rotation assembly in scene.
Claims (5)
1. realizing active sealing formula rotating blowout preventer oil pressure shrinks an Active Compensation formula glue core, it is characterized in that: comprise main glue core (1) and glue ring (2) two parts, glue ring (2) is sleeved on main glue core (1) outside; Bolt (3) is equipped with on described main glue core (1) top, and glue ring (2) external circumferential has inside arc-shaped recess.
2. realizing active sealing formula rotating blowout preventer oil pressure according to claim 1 shrinks Active Compensation formula glue core, it is characterized in that: described main glue core (1) external circumferential has inside inclined plane, glue ring (2) inner side is provided with inclined plane, to match with the inclined plane in main glue core (1) outside.
3. realizing active sealing formula rotating blowout preventer oil pressure according to claim 1 shrinks Active Compensation formula glue core, it is characterized in that: all there is the sealing lip (4) of outside extension in described glue ring (2) upper/lower terminal outside.
4. realizing active sealing formula rotating blowout preventer oil pressure according to claim 3 shrinks Active Compensation formula glue core, it is characterized in that: between the sealing lip (4) of described glue ring (2) upper/lower terminal, be also provided with glue ring skeleton, glue ring skeleton comprises two extrusion rings (5) and a plurality of support column (6) welding together, and a plurality of support columns (6) are looped around glue ring (2) periphery and by two extrusion rings (5), compress the sealing lip (4) of glue ring (2) upper/lower terminal.
5. realizing active sealing formula rotating blowout preventer oil pressure according to claim 4 shrinks Active Compensation formula glue core, it is characterized in that: described support column (6) is 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420168640.9U CN203756109U (en) | 2014-04-09 | 2014-04-09 | Oil pressure contraction active compensation rubber core for active seal type rotation blowout preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420168640.9U CN203756109U (en) | 2014-04-09 | 2014-04-09 | Oil pressure contraction active compensation rubber core for active seal type rotation blowout preventer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203756109U true CN203756109U (en) | 2014-08-06 |
Family
ID=51251396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420168640.9U Expired - Fee Related CN203756109U (en) | 2014-04-09 | 2014-04-09 | Oil pressure contraction active compensation rubber core for active seal type rotation blowout preventer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203756109U (en) |
-
2014
- 2014-04-09 CN CN201420168640.9U patent/CN203756109U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140806 Termination date: 20170409 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |