CN211287632U - Bidirectional pressure-bearing wellhead stabilizing base - Google Patents
Bidirectional pressure-bearing wellhead stabilizing base Download PDFInfo
- Publication number
- CN211287632U CN211287632U CN201921546027.5U CN201921546027U CN211287632U CN 211287632 U CN211287632 U CN 211287632U CN 201921546027 U CN201921546027 U CN 201921546027U CN 211287632 U CN211287632 U CN 211287632U
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- pipe
- welding
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- parent tube
- head
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- 230000000087 stabilizing Effects 0.000 title description 21
- 230000002457 bidirectional Effects 0.000 title description 7
- 238000003466 welding Methods 0.000 claims abstract description 54
- 230000002093 peripheral Effects 0.000 claims description 4
- 238000011105 stabilization Methods 0.000 claims description 4
- 230000003019 stabilising Effects 0.000 claims 3
- 230000001965 increased Effects 0.000 abstract description 5
- 230000001174 ascending Effects 0.000 abstract description 2
- 125000004122 cyclic group Chemical group 0.000 abstract description 2
- 210000003128 Head Anatomy 0.000 description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000037250 Clearance Effects 0.000 description 1
- 210000001503 Joints Anatomy 0.000 description 1
- 230000035512 clearance Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
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Abstract
The utility model provides a base is stabilized to well head of two-way pressure-bearing, includes barrel, parent tube and pipe, and the parent tube includes the parent tube head and the parent tube body of connecting from top to bottom, and the parent tube head is connected with the roof, and the parent tube body is located the barrel, and the pipe includes the pipe tube head and the pipe body of connecting from top to bottom, and the pipe body is located the base tube, the welding hole that distributes on the parent tube body is equipped with the welding key piece in the welding hole, and the welding key piece is cyclic annular, and the welding key piece outer wall welds with the inner wall in welding hole, and welding key piece heart welds. The utility model discloses the pipe that stabilizes the base to current well head presets the structure and improves, on top circumferential weld's basis, has increased a plurality of welding key pieces between pipe body and the parent tube body, and welding key piece connecting tube and parent tube on a plurality of positions to strengthened the welding strength who presets the pipe greatly, solved the ascending power of primary structure and can only pass through the problem that circumferential weld bore, improved the ability that the pipe bore upper and lower pressure.
Description
Technical Field
The utility model relates to a well head stabilizing base of two-way pressure-bearing for ocean engineering construction.
Background
The wellhead stabilization base has wide application in ocean engineering, such as gravity type platforms, jackets, underwater systems, seabed protection structures, wind power foundations, deep sea mooring, deep sea wellhead bases and the like. The structure is that the outside is a cylinder with a closed top end and an open lower end, and the cylinder is provided with one or more base pipes in which a conduit is arranged. The wellhead stabilization base top plate is provided with a plurality of water suction holes, the water suction holes can be connected with a suction pump through pipelines, and seawater is pumped out of the barrel through the suction pump. When the well head stabilizing base is put down, the well head stabilizing base is suspended by the crane sling and is penetrated by the dead weight, after the dead weight cannot be penetrated, the suction pump is connected with the water suction hole through a pipeline, seawater in the cylinder is pumped out of the cylinder by the suction pump, and the well head stabilizing base is penetrated by the pressure difference generated inside and outside the cylinder. The well mouth stabilizing base is similar to a rigid short pile in function, has a supporting function on the well mouth, and needs to bear huge load brought by a blowout preventer above a guide pipe through the guide pipe when being used as a deep sea well mouth stabilizing base. The guide pipe has two modes to be installed in a base pipe of a wellhead stabilizing base: firstly, lowering a wellhead stabilizing base in place, and drilling a guide pipe in a jetting mode; secondly, when the wellhead stabilizing base is processed, the guide pipe is installed in the base pipe in advance and is lowered together with the wellhead stabilizing base. The injection type running conduit has the advantages that the running length of the conduit can be longer than that of the cylinder body, the contact area of the conduit and the stratum is increased, and therefore the supporting force of the stratum on the conduit is increased; the preset guide pipe has the advantages that the guide pipe and the base pipe can be fixed in advance, the connection strength of the guide pipe and the wellhead stabilizing base is improved, and the preset guide pipe and the base pipe are good in centering property. At present, a preset conduit has two structures, namely, a conduit body of the conduit is annularly welded with an upper plane of a base pipe in a welding mode; and secondly, the conduit and the base pipe are fixed by cementing. The two preset structures have the problems of insufficient fixed strength and difficulty in bidirectional pressure bearing, particularly upward pressure bearing.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can improve the well head stabilizing base of two-way pressure-bearing of pipe and well head stabilizing base joint strength.
The problem of the utility model is realized with following technical scheme:
the utility model provides a base is stabilized to well head of two-way pressure-bearing, includes barrel, parent tube and pipe, barrel top fixed roof, and the parent tube includes parent tube head and the parent tube body of connecting from top to bottom, and the parent tube head is connected with the roof, and the parent tube body is located the barrel, and the pipe includes the pipe tube head and the pipe body of connecting from top to bottom, and the pipe body is located the parent tube, the welding hole that distributes on the parent tube body is equipped with the welding key piece in the welding hole, and the welding key piece is cyclic annular, and the welding key piece outer wall welds with the inner wall in welding hole, and the welding key piece heart.
According to the bidirectional pressure-bearing wellhead stabilizing base, the outline of the welding key block is matched with the shape of the welding hole, and the outer surface of the welding key block is concave to the outer peripheral surface of the base pipe body.
Above-mentioned two-way pressure-bearing well head stabilizing base, the welded hole is at the peripheral several rows that distribute along the axial of parent tube, and the position of welded hole between the adjacent row is not at same cross section.
According to the bidirectional pressure-bearing wellhead stabilizing base, the lower part of the base tube body is provided with the support ring, the outer wall of the support ring is welded with the inner wall of the base tube body, and the inner wall of the support ring is welded with the outer wall of the guide tube body.
Above-mentioned well head stabilizing base of two-way pressure-bearing, the pipe tube head is equipped with supports the outer conical surface, and the parent tube head is equipped with the support taper hole, supports the outer conical surface and matches the laminating by supporting the taper hole and support.
According to the bidirectional pressure-bearing wellhead stabilizing base, the top of the pipe head of the guide pipe is connected with the flange plate, and the flange plate is connected with the top plate of the cylinder body through the connecting rib plate.
The utility model discloses the pipe that stabilizes the base to current well head presets the structure and improves, on top circumferential weld's basis, has increased a plurality of welding key pieces between pipe body and the parent tube body, and welding key piece connecting tube and parent tube on a plurality of positions to strengthened the welding strength who presets the pipe greatly, solved the ascending power of primary structure and can only pass through the problem that circumferential weld bore, improved the ability that the pipe bore upper and lower pressure.
Drawings
The present invention will be further explained with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic view of a body structure of a base pipe;
fig. 3 is a schematic structural view of a weld key block.
The reference numbers in the figures are: 1. a flange plate; 2. the pipe joint comprises a connecting rib plate, 3 parts of a pipe head, 3-1 parts of a supporting outer conical surface, 4 parts of a pipe body, 5 parts of a base pipe head, 5-1 parts of a supporting conical hole, 6 parts of a base pipe body, 6-1 parts of a welding hole, 7 parts of a welding key block, 8 parts of a supporting ring, 9 parts of a top plate, 10 parts of a barrel body.
Detailed Description
Referring to fig. 1, the present invention comprises a cylinder 10, a base tube and a conduit, the top of the cylinder is closed by a fixed top plate 9, and the bottom of the cylinder is open. The parent tube includes parent tube head 5 and parent tube body 6 of connecting from top to bottom, and the parent tube head is the same with parent tube body internal diameter, and the wall thickness of parent tube head is thicker, and parent tube body wall thickness is thinner, and the butt joint back seam is closed with parent tube body terminal surface to the parent tube head. The base tube head is connected with the top plate, and the base tube body is positioned in the barrel body. The catheter comprises a catheter tube head 3 and a catheter tube body 4 which are connected up and down, the wall thickness of the catheter tube head is thicker, and the inner diameter of the catheter tube head is the same as that of the catheter tube body. The pipe head of the catheter is provided with a supporting outer conical surface 3-1, the pipe head of the base pipe is provided with a supporting conical hole, and the supporting outer conical surface is matched, attached and supported by the supporting conical hole. The top of the pipe head of the guide pipe is connected with a flange plate 1, the flange plate is connected with a top plate of the cylinder body through a connecting rib plate 2, and the connecting rib plate is used for increasing the connecting strength of the guide pipe and the wellhead stabilizing base.
Referring to fig. 1-3, welding holes 6-1 are distributed on the base pipe body, welding key blocks are arranged in the welding holes, the welding key blocks 7 are annular, the outer walls of the welding key blocks are welded with the inner walls of the welding holes, and the centers of the welding key blocks are welded with the outer wall of the guide pipe body. The shape of the welding hole is in a geometrical shape such as a rectangle, a circle, an ellipse and the like, the outline of the welding key block is matched with the shape of the welding hole, and the welding key block is shown to be in a rectangle. The outer surface of the welding key block is concave to the outer peripheral surface of the tube body of the base tube. The welding hole is at the parent tube periphery along the several rows of axial distribution, and the position of welding hole does not set up at same cross section between the adjacent row, and above-mentioned structure constitutes many positions fixed connection with the adoption welding key piece of parent tube body and pipe body, and weld area is big, and joint strength is high, and hookup location evenly distributed, each hookup location atress is balanced. The lower part of the base pipe body is provided with a support ring 8, the outer wall of the support ring is welded with the inner wall of the base pipe body, and the inner wall of the support ring is welded with the outer wall of the guide pipe body. The support ring plays the centering effect on the one hand, and the clearance between base tube body and the pipe body of pipe welds the shutoff on the other hand.
The pipe head of the conduit and the pipe head of the base pipe of the utility model form an annular weld seam at the supporting part; the welding key blocks are fixedly welded and connected at a plurality of positions of the catheter body and the base tube body; the pipe body of the guide pipe is connected with the lower part of the pipe body of the base pipe through the support ring, the structure greatly enhances the connection strength of the preset guide pipe, and improves the capability of the guide pipe for bearing up-down bidirectional pressure.
Claims (6)
1. The utility model provides a base is stabilized to well head of two-way pressure-bearing, includes barrel (10), parent tube and pipe, and roof (9) are fixed at the barrel top, and the parent tube includes parent tube head (5) and parent tube body (6) of connecting from top to bottom, and the parent tube head is connected with the roof, and the parent tube body is located the barrel, and the pipe is including pipe tube head (3) and pipe body (4) of connecting from top to bottom, and the pipe body is located the parent tube, its characterized in that: welding holes (6-1) are distributed in the base tube body, welding key blocks are arranged in the welding holes, the welding key blocks (7) are annular, the outer walls of the welding key blocks are welded with the inner walls of the welding holes, and the centers of the welding key blocks are welded with the outer wall of the catheter body.
2. A bi-directional pressure bearing wellhead stabilising foundation as claimed in claim 1 in which: the outline of the welding key block is matched with the shape of the welding hole, and the outer surface of the welding key block is concave to the peripheral surface of the base pipe body.
3. A bi-directional pressure bearing wellhead stabilising foundation as claimed in claim 2 in which: the welding holes are distributed in a plurality of rows along the axial direction on the periphery of the base pipe, and the positions of the welding holes between the adjacent rows are not in the same cross section.
4. A bi-directional pressure bearing wellhead stabilising base as claimed in claim 3 in which: the lower part of the base tube body is provided with a support ring (8), the outer wall of the support ring is welded with the inner wall of the base tube body, and the inner wall of the support ring is welded with the outer wall of the guide tube body.
5. A bi-directional pressure bearing wellhead stabilization foundation according to claim 4, characterized in that: the pipe head of the catheter is provided with a supporting outer conical surface (3-1), the head of the base pipe is provided with a supporting conical hole, and the supporting outer conical surface is matched, attached and supported by the supporting conical hole.
6. A bi-directional pressure bearing wellhead stabilization foundation according to claim 5, characterized in that: the top of the pipe head of the conduit is connected with a flange (1) which is connected with the top plate of the cylinder body through a connecting rib plate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921546027.5U CN211287632U (en) | 2019-09-17 | 2019-09-17 | Bidirectional pressure-bearing wellhead stabilizing base |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921546027.5U CN211287632U (en) | 2019-09-17 | 2019-09-17 | Bidirectional pressure-bearing wellhead stabilizing base |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211287632U true CN211287632U (en) | 2020-08-18 |
Family
ID=72035111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921546027.5U Active CN211287632U (en) | 2019-09-17 | 2019-09-17 | Bidirectional pressure-bearing wellhead stabilizing base |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211287632U (en) |
-
2019
- 2019-09-17 CN CN201921546027.5U patent/CN211287632U/en active Active
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