CN204252842U - A kind of tension leg type offshore boring island individual layer rotation-sliding churn base - Google Patents
A kind of tension leg type offshore boring island individual layer rotation-sliding churn base Download PDFInfo
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- CN204252842U CN204252842U CN201420647796.5U CN201420647796U CN204252842U CN 204252842 U CN204252842 U CN 204252842U CN 201420647796 U CN201420647796 U CN 201420647796U CN 204252842 U CN204252842 U CN 204252842U
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Abstract
The utility model relates to a kind of tension leg type offshore boring island individual layer rotation-sliding churn base, belongs to field of ocean engineering.A kind of tension leg type offshore boring island individual layer rotation-sliding churn base, comprise module drilling machine deck, on described base bearing, support ring is welded in the middle of module drilling machine deck, upper spherical bearing is welded on the bottom of support ring on base bearing, lower peripheral surface bearing is welded on the top of base bearing lower support ring, the outside of base bearing lower support ring is provided with annular brace slideway, between module drilling machine deck and annular brace slideway, is evenly arranged six supports sliding shoe.This drilling well base is optimized from structure, simplify drillng operation method, do not need to arrange proprietary drilling equipment to carry out drilling well and well workover more in addition, this rig substructure not only has that structure is simple, volume is little, lightweight, bearing capacity large, easily installation and maintenance, the feature such as safe and reliable, but also have and adapt to complicated natural climate and the ability of severe sea condition.
Description
Technical field
The utility model relates to a kind of tension leg type offshore boring island individual layer rotation-sliding churn base, and it belongs to field of ocean engineering.
Background technology
The general all rectangular or triangle of tension leg platform (TLP) main body, platform upper is positioned at more than the water surface, and connect lower body by 4 or 3 root posts, column is cylindrical structural, and Main Function is available to the rigidity of structure of platform body necessity.The buoyancy of platform provides by being positioned at undersurface heavy body buoyancy tank, and buoyancy tank head and the tail connect with each column, form circulus.Tension leg is made up of 1 ~ 4 tension tendon, and upper end is fixed on platform body, and lower end is connected with seabed pedestal template, or is connected directly between pile foundation top.Sometimes in order to increase the lateral rigidity of plateform system, oblique line mooring rope system also can be installed, assisting as vertical tension leg system.Platform is fixed into position by seafloor foundation, mainly contains pile foundation or suction type foundation 2 kinds of forms.Center well is positioned at platform upper, can support dry tree system, production riser by abovegroundly to connect with production equipment, to connect with sub-sea drilled wells down.The drilling module of platform comprises the part compositions such as derrick, rig floor and lower movable base.Derrick is for be uprightly set with Jackup mast.Lower movable base is gantry type frame structure, and 4 pedestals are seated on the T-shaped slide rail of platform top layer, promotes by two crawl devices driven by hydraulic jack, can along platform south/north to slippage.9 pedestals of rig floor are seated on the box-shaped slide rail of lower movable base, promote by two crawl devices driven by hydraulic jack, can along platform east/west to slippage.The well head battle array of 3X3 or 4X4 is set in the below of rig, completes well-digging operation by vertical slip.
In the face of the severe sea condition that tension leg type platform faces when deep water sea area operation, traditional Vertical slippage formula support system exposes a series of shortcoming: must have certain elevation between two groups of vertical slip rings, so just, improve the center of gravity of rig whole, under the ambient conditions that the wind was high and the waves were pressing of the South Sea, increase the danger that platform topples, reduce the precision of well-digging operation simultaneously; Relevant drilling well support module must be equipped with above deck and carry out putting equipment, add deathtrap and the wind area of platform, and requirements at the higher level are proposed to Platform Deck size.
Summary of the invention
For solving problems of the prior art, the utility model provides a kind of tension leg type offshore boring island individual layer rotation-sliding churn base, with the technical barrier that solves that center of gravity when deepwater well-digging operation is high, Heavy Weight, volume are large etc.
The technical solution of the utility model is: a kind of tension leg type offshore boring island individual layer rotation-sliding churn base, comprise module drilling machine deck, on described base bearing, support ring is welded in the middle of module drilling machine deck, upper spherical bearing is welded on the bottom of support ring on base bearing, lower peripheral surface bearing is welded on the top of base bearing lower support ring, the outside of base bearing lower support ring is provided with annular brace slideway, between module drilling machine deck and annular brace slideway, is evenly arranged six supports sliding shoe.
Described upper spherical bearing and lower peripheral surface bearing surface built-up welding 625 alloy.
The beneficial effects of the utility model are: this drilling well base is optimized from structure, simplify drillng operation method, do not need to arrange proprietary drilling equipment to carry out drilling well and well workover more in addition, this rig substructure not only has that structure is simple, volume is little, lightweight, bearing capacity large, easily installation and maintenance, the feature such as safe and reliable, but also have and adapt to complicated natural climate and the ability of severe sea condition.This drilling well base provides strong technical support by for the design and manufaction technology of tension leg platform (TLP) in China's oil exploitation, promotes the great-leap-forward development of Novel platform in China's oil-gas field development.This drilling well base overcomes traditional tension leg platform (TLP) vertically mobile shortcoming of digging a well, and effectively reduces the cost of tension leg platform (TLP) in deep water marginal oil field.
Accompanying drawing explanation
Fig. 1 is a kind of structure chart of tension leg type offshore boring island individual layer rotation-sliding churn base.
In figure: 1, support ring on base bearing, 2, base bearing lower support ring, 3, upper spherical bearing, 4, lower peripheral surface bearing, 5, annular brace slideway, 6, support sliding shoe, 7, module drilling machine deck.
Detailed description of the invention
Fig. 1 shows a kind of structure of tension force leg drill platform individual layer rotation-sliding churn base, it is made up of a circular steel structure and a middle bearing arrangement, wherein module drilling machine is positioned at above module drilling machine deck 7, on base bearing, support ring 1 is welded in the middle of module drilling machine deck 7, upper spherical bearing 3 is welded on the bottom of support ring 1 on base bearing, lower peripheral surface bearing 4 is welded on the top of base bearing lower support ring 2, surface overlaying 625 alloy of upper spherical bearing 3 and lower peripheral surface bearing 4, a ring shape supporting skid rail 5 is arranged in the outside of base bearing lower support ring 2, between module drilling machine deck 7 and annular brace slideway 5, be evenly arranged six support sliding shoe 6.Module drilling machine deck 7 rotation-sliding, makes the module drilling machine on top realize rotating well-digging operation.
Claims (2)
1. a tension leg type offshore boring island individual layer rotation-sliding churn base, comprise module drilling machine deck (7), it is characterized in that: on described base bearing, support ring (1) is welded in the middle of module drilling machine deck (7), upper spherical bearing (3) is welded on the bottom of support ring on base bearing (1), lower peripheral surface bearing (4) is welded on the top of base bearing lower support ring (2), the outside of base bearing lower support ring (2) is provided with annular brace slideway (5), between module drilling machine deck (7) and annular brace slideway (5), be evenly arranged six support sliding shoe (6).
2. a kind of tension leg type offshore boring island individual layer rotation-sliding churn base according to claim 1, is characterized in that: described upper spherical bearing (3) and lower peripheral surface bearing (4) surface overlaying 625 alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420647796.5U CN204252842U (en) | 2014-11-03 | 2014-11-03 | A kind of tension leg type offshore boring island individual layer rotation-sliding churn base |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420647796.5U CN204252842U (en) | 2014-11-03 | 2014-11-03 | A kind of tension leg type offshore boring island individual layer rotation-sliding churn base |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204252842U true CN204252842U (en) | 2015-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420647796.5U Withdrawn - After Issue CN204252842U (en) | 2014-11-03 | 2014-11-03 | A kind of tension leg type offshore boring island individual layer rotation-sliding churn base |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204252842U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295242A (en) * | 2014-11-03 | 2015-01-21 | 大连迪施船机有限公司 | Single-layer rotary sliding rig substructure of tension leg-type drilling platform |
-
2014
- 2014-11-03 CN CN201420647796.5U patent/CN204252842U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295242A (en) * | 2014-11-03 | 2015-01-21 | 大连迪施船机有限公司 | Single-layer rotary sliding rig substructure of tension leg-type drilling platform |
| CN104295242B (en) * | 2014-11-03 | 2016-06-29 | 大连迪施船机有限公司 | A kind of tension leg type drilling platforms monolayer rotation-sliding churn base |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150408 Effective date of abandoning: 20160629 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |