CN113153233A - Three-dimensional overlong rigid connection pipeline system with buoyancy device - Google Patents
Three-dimensional overlong rigid connection pipeline system with buoyancy device Download PDFInfo
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- CN113153233A CN113153233A CN202110328192.9A CN202110328192A CN113153233A CN 113153233 A CN113153233 A CN 113153233A CN 202110328192 A CN202110328192 A CN 202110328192A CN 113153233 A CN113153233 A CN 113153233A
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/01—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/01—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
- E21B43/0107—Connecting of flow lines to offshore structures
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/01—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
- E21B43/013—Connecting a production flow line to an underwater well head
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/01—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
- E21B43/017—Production satellite stations, i.e. underwater installations comprising a plurality of satellite well heads connected to a central station
Abstract
The invention discloses a three-dimensional overlong rigid connection pipeline system with a buoyancy device, which is used for connecting a wellhead Christmas tree and a manifold and comprises: the connecting pipeline comprises a connecting pipeline main body, quick connectors arranged at two end sides of the connecting pipeline main body, a plurality of buoyancy devices and a plurality of vortex-induced vibration suppression devices, wherein the buoyancy devices and the vortex-induced vibration suppression devices are arranged on the connecting pipeline main body, the two quick connectors are respectively connected with a wellhead Christmas tree and a manifold, and the connecting pipeline main body is formed by combining and changing different positions of a plurality of sections of straight pipe short sections and a plurality of elbows in a three-dimensional space. The three-dimensional ultra-long rigid connection pipeline system meets the requirements of various wellhead oil reservoir characteristics, space arrangement and the like through the design of different components of the whole system, can greatly ensure the safe development and production of deepwater oil and gas fields by using the ultra-long rigid connection pipeline system which is provided with the vortex-induced vibration inhibiting device and the buoyancy device and is positioned in a three-dimensional space, and has the advantages of reliable structural strength and fatigue life, high cost performance and convenience in installation.
Description
Technical Field
The invention relates to the technical field of offshore oil engineering, in particular to a three-dimensional overlong rigid connection pipeline system with a buoyancy device.
Background
The deep water ocean engineering mostly adopts a development mode of 'underwater facilities + connecting pipelines + manifolds + seabed pipelines + floating structures + export pipelines + land terminals' or 'underwater facilities + connecting pipelines + manifolds + seabed pipelines + floating structures + export ships', oil and gas resources at underwater wellheads have high-temperature and high-pressure characteristics, need to be processed by the aid of the manifolds and then pass through the underwater pipelines to the floating structures to be connected with pipeline systems between the underwater wellheads and the manifolds, need to bear loads of high temperature, high pressure, wave flow combined action and the like, and are key components of necks in ocean engineering development. If improperly designed, this can result in a shutdown and leakage risk.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the above-mentioned problems in the prior art. In view of the above, the present invention needs to provide a three-dimensional ultra-long rigid connection pipeline system with a buoyancy device, which can meet the requirements of various wellhead oil reservoir characteristics, spatial arrangement, etc. by designing different components of the whole system, can greatly ensure the safe development and production of deep water oil and gas fields, and has the advantages of high structural strength, reliable fatigue life, high cost performance, and convenient installation.
The invention provides a three-dimensional overlong rigid connection pipeline system with a buoyancy device, which is used for connecting a wellhead Christmas tree and a manifold and comprises: the connecting pipeline comprises a connecting pipeline body, quick connectors arranged at two end sides of the connecting pipeline body, a plurality of buoyancy devices arranged at intervals and a plurality of vortex-induced vibration suppression devices arranged at intervals on the connecting pipeline body, wherein the two quick connectors are respectively connected with the wellhead Christmas tree and the manifold, and the connecting pipeline body is formed by combining and changing different positions of a plurality of sections of straight pipe short sections and a plurality of elbows in a three-dimensional space.
According to one embodiment of the invention, the quick connector comprises a connector body and a connector male head arranged in the connector body, wherein one end of the connector body is connected with the straight pipe nipple, the other end of the connector body is abutted against the wellhead Christmas tree or the manifold, connector female heads matched with the connector male head for use are arranged on the wellhead Christmas tree and the manifold, and a sealing ring is arranged between the connector male head and the connector female head when the connector male head and the connector female head are combined.
According to one embodiment of the invention, the device for inhibiting vortex-induced vibration comprises semi-buckled strakes and a first fastener, wherein the two strakes are buckled on the straight pipe short section respectively and are oppositely arranged, and are fastened with the straight pipe short section through the first fastener.
According to one embodiment of the invention, a plurality of strake fins which are divided into two rows and arranged in a spiral line are arranged on the outer surface of the strake.
According to one embodiment of the invention, the strake is a polyurethane elastomer polymerized from a polyether polyol and diphenylmethane diisocyanate.
According to one embodiment of the invention, the buoyancy device comprises a connecting pipe connected with the straight pipe nipple, a plurality of fixing rings sleeved on the connecting pipe, two buoyancy blocks buckled on the connecting pipe and wrapping the fixing rings, and second fastening pieces, wherein two centering holes are formed in one buoyancy block, two centering columns matched with the centering holes are formed in the other buoyancy block, and the two second fastening pieces are respectively sleeved at two ends of the buoyancy block.
According to one embodiment of the invention, the buoyancy block is a composite polyester foam.
According to one embodiment of the invention, the first fastener and the second fastener are each a tie-up strap with a locking bolt.
According to one embodiment of the invention, the tie wrap is made of a corrosion resistant metallic material 625 alloy.
According to one embodiment of the invention, the surfaces of the straight pipe nipple and the elbow are provided with anti-corrosion coatings.
The invention relates to a three-dimensional ultra-long rigid connection pipeline system with a buoyancy device, which consists of a connection pipeline body consisting of straight pipe short sections and elbows, quick connectors arranged at the beginning and the end of the connection pipeline body, a plurality of buoyancy devices and a plurality of vortex-induced vibration inhibiting devices arranged on the connection pipeline body, wherein the vortex-induced vibration inhibiting devices and the buoyancy devices are directly arranged on the straight pipe short sections through binding bands, the connection pipeline system is limited in a limited three-dimensional space position through the combined change of different positions of the straight pipe short sections and the elbows in the three-dimensional space, so that an ultra-long rigid connection pipeline system for connecting a wellhead Christmas tree and a manifold is formed The buoyancy device and the ultra-long rigid connection pipeline system in the three-dimensional space can greatly ensure the safe development and production of deep water oil and gas fields, and have the advantages of reliable structural strength and fatigue life, high cost performance and convenient installation.
Drawings
Fig. 1 is a schematic structural view of a three-dimensional ultra-long rigid connection piping system with buoyancy means according to the present invention.
Fig. 2 is a schematic view of the construction of the quick connector according to the present invention.
Fig. 3 is a schematic structural view of a device for suppressing vortex-induced vibration according to the present invention.
Fig. 4 is an exploded view of the buoyancy device according to the present invention.
Figure 5 is a schematic view of the elbow construction according to the present invention.
Fig. 6 is a schematic structural diagram of a straight pipe nipple according to the present invention.
Fig. 7 is a schematic diagram of the structure of a wellhead tree in accordance with the present invention.
Fig. 8 is a schematic diagram of the structure of a manifold according to the present invention.
Reference numerals: 1-wellhead christmas tree; 2-a quick connector; 3-bending the pipe; 4-vortex-induced vibration suppression; 5-straight pipe short section; 6-a buoyancy device; 7-a manifold; 8-clearance; 9-the seabed; 10-binding tapes; 11-an anti-corrosion coating; 21-a connector body; 22-connector male; 23-connector female; 24-a sealing ring; 41-strake; 42-strake fins; 43-fin rotation angle; 61-connecting tube; 62-a fixed ring; 63-a buoyancy block; 64-centering the hole.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
As shown in fig. 1 to 8, a three-dimensional ultra-long rigid connection piping system with buoyancy device for connecting a wellhead christmas tree and a manifold, comprises: the connecting pipeline comprises a connecting pipeline body, quick connectors 2 arranged at two end sides of the connecting pipeline body, a plurality of buoyancy devices 6 arranged at intervals and a plurality of vortex-induced vibration suppression devices 4 arranged at intervals on the connecting pipeline body, wherein the two quick connectors 2 are respectively connected with a wellhead Christmas tree 1 and a manifold 7, and the connecting pipeline body is formed by combining and changing different positions of a plurality of sections of straight pipe short sections 5 and a plurality of elbows 3 in a three-dimensional space;
it is to be understood that the ultra-long rigid connection pipeline system is connected with the wellhead Christmas tree 1 and the manifold 7 respectively through the quick connectors 2 connected with the two ends by means of the underwater robot, the vibration caused by wave current elimination of the vortex-induced vibration device 4 is inhibited, and the ultra-long rigid connection pipeline system and the seabed 9 are required to keep a certain gap 8 as the ultra-long rigid connection pipeline system needs to absorb the thermal expansion caused by the high temperature and high pressure of a wellhead medium, and the super-long rigid connection pipeline system has large downward deflection in the vertical direction when in the normal working state, so a plurality of buoyancy devices 6 arranged at intervals are added on the connection pipeline body to eliminate the problems, and at the same time, the connection pipeline system is limited by the arrangement space, the ultra-long rigid connection pipeline system is of an old structure through combination change of different positions of the straight pipe short section 5 and the elbow 3 in a three-dimensional space, and the purpose of safely transmitting oil and gas resources of a wellhead to a manifold is achieved.
The invention relates to a three-dimensional overlong rigid connection pipeline system with a buoyancy device, which consists of a connection pipeline body consisting of straight pipe short sections 5 and elbows 3, a quick connector 2 arranged at the beginning and the end of the connection pipeline body, a plurality of buoyancy devices 6 and a plurality of vortex-induced vibration suppression devices 4 arranged on the connection pipeline body, wherein the vortex-induced vibration suppression devices 4 and the buoyancy devices 5 are directly arranged on the straight pipe short sections 5 through binding belts 10, and the connection pipeline system is limited in a limited three-dimensional space position through the combined change of different positions of the straight pipe short sections 5 and the elbows 3 in the three-dimensional space to form an overlong rigid connection pipeline system for connecting a wellhead Christmas tree 1 and a manifold 7, and the system meets the requirements of various wellhead oil reservoir characteristics, spatial arrangement and the like through the design of different components of the whole system, and the ultra-long rigid connection pipeline system which is provided with the vortex-induced vibration inhibiting device and the buoyancy device and is positioned in a three-dimensional space can greatly ensure the safe development and production of the deepwater oil-gas field, and has the advantages of reliable structural strength and fatigue life, high cost performance and convenience in installation.
As shown in fig. 1 and 2, the quick connector 2 includes a connector body 21 and a connector male 22 arranged in the connector body 21, wherein one end of the connector body 21 is connected with the straight pipe nipple 5, the other end of the connector body is abutted against the wellhead christmas tree 1 or the manifold 7, the wellhead christmas tree 1 and the manifold 7 are provided with a connector female 23 used in cooperation with the connector male 22, when the connector male 22 and the connector female 23 are combined, a sealing ring 24 is arranged between the connector male 22 and the connector female 23, and it should be understood that the connector male 22 and the connector female 23 are fixed by a hydraulic lock of the underwater robot; the connector body 21 is an integral forged piece made of ASTM-A694-F65 materials, through the structural design, and the overall structural form, the shapes of components, the material selection, the on-site strength, the installation strength, the fatigue life and the like of the connector body are fully considered, so that the straight pipe short section 5 and the elbow 3 can both bear the internal medium pressure of 38 MPa and the medium temperature of 89 ℃, the service life of 30 years underwater can be guaranteed when the water depth of 1500 m is reached, meanwhile, the weldability between the straight pipe short section 5 of the rigid connection pipeline and the connector body 21 can be effectively guaranteed, and the surface of the connector body 21 is protected by adopting an anti-corrosion coating.
As shown in fig. 1 and 3, the device for suppressing vortex-induced vibration 4 includes semi-buckled strakes 41 and a first fastener, wherein the two strakes 41 are respectively buckled on the straight pipe nipple 5 and are oppositely arranged, and are fastened with the straight pipe nipple 5 through the first fastener; in the specific structural design, a plurality of strake fish fins 42 which are divided into two rows and arranged in a spiral line are arranged on the outer surface of the strake 41; it should be understood that the vortex-induced vibration suppression device 4 is used for eliminating the vortex-induced vibration of the extra-long rigid connection pipeline system induced by the sea bottom waves and the currents, and is usually made of high polymer materials with excellent water resistance, such as polyurethane elastomers, polyolefins, glass fiber reinforced plastics and the like, a specific structural form is selected, the thickness of the strake, the height of the strake fins, the screw pitch and the rotating angle 43 of the strake fins are analyzed through computational fluid dynamics analysis to determine the suppression efficiency of the vortex-induced vibration suppression device meeting the use requirements, and the binding tape 10 made of corrosion-resistant metal material 625 alloy is fixed on the straight pipe nipple 5, wherein the strake 41 is a polyurethane elastic part formed by polymerizing polyether polyol with good water resistance and diphenylmethane diisocyanate, auxiliaries such as oxidation resistance, ultraviolet resistance and the like are added in the polyurethane elastic part, and through the structural design, the device 4 for restraining the vortex-induced vibration can bear the water depth of 1500 meters and guarantee the service life of 30 years underwater.
As shown in fig. 1 and 4, the buoyancy device 6 includes a connecting pipe 61 connected to the straight pipe nipple 5, a plurality of fixing rings 62 sleeved on the connecting pipe 61, two buoyancy blocks 63 buckled on the connecting pipe 61 and wrapping the fixing rings 62, and a second fastening member, wherein one buoyancy block 63 is provided with two centering holes, and the other buoyancy block 63 is provided with two centering columns matched with the centering holes, through the structural design of the centering columns (not shown in the figure) and the centering holes 64, so as to facilitate the rapid installation and use between the two buoyancy blocks 63, the second fastening members are two and respectively sleeved at two ends of the buoyancy block 63, the buoyancy blocks 63 are made of composite polyester foam for providing buoyancy for the ultra-long rigid connection pipeline system, and through the above structural design, the buoyancy device 6 can bear 1500 m water depth and guarantee 30 years underwater service life.
As shown in fig. 1 and 4, the first fastening member and the second fastening member are both binding bands 10 with locking bolts, and the binding bands 10 are made of corrosion-resistant metal material 625 alloy, so that the corrosion resistance of the binding bands 10 exposed to seawater for a long time is effectively improved, and the binding bands can withstand 1500 m water depth and guarantee 30-year underwater service life.
As shown in fig. 1, 5 and 6, the surfaces of the straight pipe nipple 5 and the elbow 3 are provided with an anti-corrosion coating 11, it is understood that the straight pipe nipple 5 and the elbow 3 are the main connecting structure and the bearing system in the ultra-long rigid connection pipeline system, the integral structural design is carried out by using a finite element method, the working condition of the finite element model needs to consider the installation precision of the wellhead Christmas tree 1 and the manifold 7, the working conditions of various possibilities of the ultra-long rigid connection pipeline system during service, it is understood that the manufacturing and design specifications of the straight pipe nipple 5 and the elbow 3 refer to ASME-31.8, ASME-31.4 and API-1111, and simultaneously the fatigue life analysis is carried out on the corresponding welding seam positions, wherein the fatigue strength estimation of the welding seam position is mainly based on DNV-RP-C203, the stress variation range of the welding seam position is obtained according to the finite element analysis, the fatigue life is estimated by using the S-N curve, and through the structural design, the integral structural form, the component shape, the material selection, the on-site strength, the installation strength, the fatigue life and the like of the elbow 3 and the straight pipe nipple 5 are fully considered, so that the straight pipe nipple and the elbow can ensure the 30-year underwater service life when bearing the internal medium pressure of 38 MPa and the medium temperature of 89 ℃.
As shown in fig. 1 to 8, the design, manufacture, land construction and offshore installation of the ultra-long rigid connection piping system are implemented as follows:
1. determining the main body shape of a rigid connecting pipeline connecting the wellhead Christmas tree 1 and the manifold 7 according to the relative positions of the wellhead Christmas tree 1 and the manifold 7, the temperature and the pressure of a conveying medium, the numerical value of environmental wave flow and the like;
2. according to the design method of the rigid connection pipeline system provided by the invention, the sizes, the wall thicknesses and the like of the straight pipe nipple 5 and the elbow 3 are designed;
3. the connector body 21 in the quick connector 2 is integrally forged and manufactured according to the joint material requirements and the manufacturing process proposed in the present invention;
4. according to the vortex-induced vibration suppression efficiency, the material and the process requirements required by the vortex-induced vibration suppression device 4, the structural form and the size of the vortex-induced vibration suppression device 4 are designed;
5. assembling and manufacturing the buoyancy device 6 according to the buoyancy, materials and process requirements required by the buoyancy device 6 provided by the invention;
6. the angle of the elbow 3 related in the ultra-long rigid connection pipeline system related in the invention is used for bending the elbow 3 in advance;
7. according to the length of the straight pipe short section 5 in the ultra-long rigid connection pipeline system, the straight pipe short section 5 is welded in a fixed length mode;
8. in order to save offshore construction time, the construction and assembly are carried out on land and under water, and tests such as field sealing, hydrostatic test and the like are carried out;
9. after the site test meets the standard requirements, all components such as the straight pipe short section 5, the elbow 3, the connector body 21 and the like are subjected to anticorrosive coating and coating operation of parts with special colors;
10. ethylene glycol is injected into the ultra-long rigid connection pipeline system, the end parts of the two quick connectors 1 are plugged by gel, and then the matched connector plugging caps are used for plugging;
11. transporting the ultra-long rigid connection pipeline system to a field operation ship;
12. lowering the rigid connection pipeline system to a position 1 meter above the preset position through a crane on the operation ship;
13. tripping the sling through an underwater robot, and opening a plugging cap at the end part of the ultralong rigid connecting pipeline;
14. by means of an underwater robot, the quick connectors 2 at two ends of the ultra-long rigid connection pipeline system are respectively and quickly butted and installed with a wellhead Christmas tree 1 and a manifold 7;
15. after the butt joint is finished, performing underwater measurement and tightness test;
16. and completing the test and the installation.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. The utility model provides a three-dimensional overlength rigid connection pipe-line system with buoyant device for connect well head production tree and manifold, its characterized in that, it includes: the connecting pipeline comprises a connecting pipeline body, quick connectors arranged at two end sides of the connecting pipeline body, a plurality of buoyancy devices arranged at intervals and a plurality of vortex-induced vibration suppression devices arranged at intervals on the connecting pipeline body, wherein the two quick connectors are respectively connected with the wellhead Christmas tree and the manifold, and the connecting pipeline body is formed by combining and changing different positions of a plurality of sections of straight pipe short sections and a plurality of elbows in a three-dimensional space.
2. The system according to claim 1, wherein the quick connector comprises a connector body and a male connector head arranged in the connector body, wherein one end of the connector body is connected with the straight pipe nipple, the other end of the connector body is abutted against the wellhead Christmas tree or the manifold, female connector heads matched with the male connector heads are arranged on the wellhead Christmas tree and the manifold, and a sealing ring is arranged between the male connector head and the female connector head when the male connector head is combined with the female connector head.
3. The three-dimensional overlong rigid connection pipeline system with the buoyancy device according to claim 1, wherein the device for inhibiting vortex-induced vibration comprises semi-buckled strakes and first fasteners, wherein the two strakes are buckled on the straight pipe nipple and are oppositely arranged, and are fastened with the straight pipe nipple through the first fasteners.
4. The three-dimensional overlength rigid connection piping system with a buoyant device according to claim 3, wherein the strake has a plurality of strake fins arranged in two rows and in a spiral line on the outer surface.
5. The three-dimensional overlength rigid connecting pipe system with a buoyancy device according to claim 3, wherein the strake is a polyurethane elastomer polymerized from polyether polyol and diphenylmethane diisocyanate.
6. The three-dimensional ultra-long rigid connection pipeline system with the buoyancy device according to claim 3, wherein the buoyancy device comprises a connection pipe connected with the straight pipe short section, a plurality of fixing rings sleeved on the connection pipe, two buoyancy blocks buckled on the connection pipe and wrapping the fixing rings, and a second fastening piece, wherein one buoyancy block is provided with two centering holes, the other buoyancy block is provided with two centering columns matched with the centering holes, and the two second fastening pieces are respectively sleeved at two ends of the buoyancy block.
7. The three-dimensional overlength rigid connection piping system with a buoyancy device according to claim 6, wherein the buoyancy block is a composite polyester foam.
8. The three-dimensional overlength rigid connection piping system with a buoyant apparatus according to claim 6 wherein the first and second fasteners are tie-wraps with locking bolts.
9. The three dimensional ultralong rigid coupling piping system with buoyancy device according to claim 8, wherein the ligature band is made of corrosion resistant metallic material 625 alloy.
10. The three-dimensional overlong rigid connection pipeline system with the buoyancy device according to claim 1, wherein the surfaces of the straight pipe nipple and the elbow are provided with anticorrosive coatings.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110328192.9A CN113153233A (en) | 2021-03-26 | 2021-03-26 | Three-dimensional overlong rigid connection pipeline system with buoyancy device |
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| CN202110328192.9A CN113153233A (en) | 2021-03-26 | 2021-03-26 | Three-dimensional overlong rigid connection pipeline system with buoyancy device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458848A (en) * | 2022-02-17 | 2022-05-10 | 深圳海油工程水下技术有限公司 | Underwater rigid full-rotation connecting arm |
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