CN103886960A - Deepwater dynamic submarine cable bunch - Google Patents
Deepwater dynamic submarine cable bunch Download PDFInfo
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- CN103886960A CN103886960A CN201410112550.2A CN201410112550A CN103886960A CN 103886960 A CN103886960 A CN 103886960A CN 201410112550 A CN201410112550 A CN 201410112550A CN 103886960 A CN103886960 A CN 103886960A
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Abstract
The invention discloses a deepwater dynamic submarine cable bundle which comprises a plurality of power cable units, cable gap filling materials and dynamic ballast units. The cross section of the cable gap filling materials and the cross section of the dynamic ballast unit are respectively in a circular shape. The power cable units, the cable gap filling materials and the dynamic ballast units are twisted to be cables. The cable gap filling materials and the dynamic ballast units are evenly distributed on the gaps between the power cable units. The cables obtained through twisting are coated with an inner cushion layer, a spiral metal armor layer and an outer protective layer in sequence. The cables are bundled to form the deepwater dynamic submarine cable bundle, and the deepwater dynamic submarine cable bundle can supply power to a plurality of underwater electric devices such as booster pumps and electric submersible pumps at the same time, greatly reduces the number of submarine cables used in the deepwater oil and gas field development process and the payment cost, is high in universality, and can be applied to the development of different deepwater oil and gas fields.
Description
Technical field
The present invention relates to the dynamic submarine cable bundle of a kind of deep water, belong to field of ocean engineering.
Background technology
Deepwater oil-gas development is becoming the main growth point of China's Offshore Oil Industry and the forward position of scientific and technical innovation.Subsea production system, as the important development mode of one in deep water hydrocarbon field, is a kind of new technology of offshore oil natural gas resource exploitation.In production system, generally adopt booster pump or electric immersible pump for oil extraction boosting oil production under water under water.And often have multiple underwater well heads to carry out oil producing operation in an oil gas field.Because the geological reservoir parameter of every mouthful of producing well is different, the parameter difference of the electric immersible pump for oil extraction of every mouthful of well or under water booster pump, also different to the requirement of power supply, often employing " one to one " variable frequency control electric submersible pump or under water booster pump, each electric submersible pump or booster pump need to have a cable power supply, and this has just required many submarine cables to different underwater well head production tree electric submersible pumps or booster pump power supply.The number of sea cable is more, and it is larger that extra large cable lays the shared oceanic area of route, and the cable laying operation time of submarine cable is longer.Because the offshore construction cost of extra large cable (particularly deep water submarine cable) is very high, submarine cable is more, and construction cost is just higher, and oil-gas field development cost is just higher.If multi-cable can be bundled in a submarine cable, can reduce quantity and the laid down cost of submarine cable in oilfield exploitation procedure.
The exploitation in deep water hydrocarbon field, often adopts floating production platform or floating production storage unit (FPSO) to add the pattern of subsea production system, need to electric power be transported in subsea production system from floating production facility by submarine cable.This just requires submarine cable can adapt to the environmental conditions such as the dynamic characteristic of floating production facility and deep water ocean wave, stream, need to adopt dynamic submarine cable.
Summary of the invention
The object of this invention is to provide the dynamic submarine cable bundle of a kind of deep water, in the present invention, multiple cable unit form bunch of cables by reasonable Arrangement, realize by submarine cable bundle be the object that multiple booster pumps and electric submersible pump are powered under water simultaneously, greatly reduces the cable laying operation cost of submarine cable.Utilize dynamic ballast unit and two layers or multilayer spiral metal armouring simultaneously, make submarine cable adapt to dynamic characteristic and the deep water marine environment condition of floating production facility.
The dynamic submarine cable bundle of a kind of deep water provided by the present invention, comprise some power cables unit, cable gap fill material and dynamic ballast unit, the cross section of described cable gap fill material and described dynamic ballast unit is circle, described power cable unit, described cable gap fill material and described dynamic ballast unit twisted synthesizing cable; Described cable gap fill material and described dynamic ballast unit are all evenly arranged in the space between described power cable unit;
The cable that described twisted synthesizing cable obtains is coated with inner cushion layer, spiral metal armour and outer jacket outward successively.
Above-mentioned submarine cable is intrafascicular, and described power cable unit is single-core power cables unit or three core power cable unit.
Above-mentioned submarine cable is intrafascicular, and the dynamic submarine cable bundle of described deep water comprises that the quantity of described single-core power cables unit is 3n, the natural number that wherein n is >=2, as be 6,9,12,15 or 18, form the bunch of cables of 6 cores, 9 cores, 12 cores, 15 cores or 18 cores.
Above-mentioned submarine cable is intrafascicular, and the dynamic submarine cable bundle of described deep water comprises that the quantity of described three core power cable unit is not less than 3.
Above-mentioned submarine cable is intrafascicular, and the dynamic submarine cable bundle of described deep water comprises that the quantity of described three core power cable unit can be the natural number between 3～6, is specially 3,4,5 or 6, forms the bunch of cables of 9 cores, 12 cores, 15 cores or 18 cores.
Above-mentioned submarine cable is intrafascicular, and described power cable unit, described cable gap fill material and described dynamic ballast unit carry out twisted synthesizing cable in the mode of concentric circles rotation.
Above-mentioned submarine cable is intrafascicular, and the dynamic submarine cable bundle of described deep water comprises at least 2 layers of described spiral metal armour, and the concrete required number of plies has more the applied marine site of the dynamic submarine cable bundle of deep water and determines; Described spiral metal armour is wound in described inner cushion layer periphery by multiple round metal single-wire helixs, and round metal single line is generally zinc plated mild carbon steel, also can have certain mechanical strength and quality and corrosion resistant metal for stainless steel, copper etc.; The hand of spiral of adjacent described spiral metal armour is contrary.
Above-mentioned submarine cable is intrafascicular, and described cable gap fill material is made up of flexible polymer, as polypropylene, has sea water corrosion resistant;
Described dynamic ballast unit is made up of metallic steel, as plastic die steel GSW2083, described dynamic ballast unit can guarantee that the dynamic submarine cable bundle of whole piece has certain quality, make it in deep water, be subject to suitable gravity, while moving when being subject to the impact of deep water marine environment condition, motion amplitude keeps within the specific limits, and then keeps certain fatigue life.
Above-mentioned submarine cable is intrafascicular, and described inner cushion layer is made up of polyethylene, polyvinyl chloride, polyamide or polyurethane, for the protection of cable and the described cable gap fill material of bunchy, makes it avoid corrosion and wearing and tearing;
Described outer jacket is made up of polyethylene, it provides neat and artistic outer surface simultaneously for the dynamic bunch of cables in deep water seabed, stop seawater to enter described spiral metal armour, for described spiral metal armour provides the environment of relatively dry, avoid it to be directly exposed in seawater.Described outer jacket also has certain coefficient of friction, make its in installation process for the draw-gear laying on ship provides suitable clamping force and tractive effort.
The present invention's " dynamic submarine cable bundle of deep water " is suspended on floating platform or other floating mode facilities, submarine cable bundle is suspended in seawater, because it is subject to the effect such as wave, trend, always in the amplitude motion state (DYNAMIC) that differs, a kind of state relative and static (STATIC)), be therefore a kind of " dynamically " bunch of cables.
The dynamic submarine cable bundle of deep water of the present invention has following beneficial effect:
The present invention is bundled to multi-cable in a dynamic cable in deep water seabed, not only can realize is the multiple power consumption equipment of booster pump and electric submersible pump etc. under water power supplies simultaneously, quantity and the laid down cost of submarine cable in the development process of deep water hydrocarbon field are also greatly reduced, and highly versatile, can be applied in the exploitation of different deep water hydrocarbons field.By configuring suitable two-layer or multi-layer helical armouring and dynamic ballast unit, make the present invention can adapt to the dynamic characteristic of deep water marine environment condition, reach certain fatigue life.
Brief description of the drawings
Fig. 1 is the structural representation of single-core power cables unit, is the main element of the dynamic bunch of cables of composition deep water.
Fig. 2 is the structural representation of the dynamic submarine cable bundle of 6 core deep water, can be for two power consumption equipment such as booster pump or electric submersible pump power supplies under water.
Fig. 3 is the structural representation of three core power cable unit, is the main element of the dynamic bunch of cables of composition deep water.
Fig. 4 is the structural representation of the dynamic submarine cable bundle of 9 core deep water, can be for three power consumption equipment such as booster pump or electric submersible pump power supplies under water.
Fig. 5 is the structural representation of the dynamic submarine cable bundle of 12 deep water core, can be for four power consumption equipment such as booster pump or electric submersible pump power supplies under water.
Fig. 6 is the structural representation of the dynamic submarine cable bundle of 15 core deep water, can be for five power consumption equipment such as booster pump or electric submersible pump power supplies under water.
Fig. 7 is the structural representation of the dynamic submarine cable bundle of 18 core deep water, can be for six power consumption equipment such as booster pump or electric submersible pump power supplies under water.
In figure, each mark is as follows:
1 conductor, 2 conductor shields, 3 insulating barriers, 4 insulation screens, 5 metal screen layers, 6 metals block water sheath, 7 protective layers, 8 single-core power cables unit, 9 cable gap fill material, 10 dynamic ballast unit, 11 inner cushion layers, 12 spiral metal armours, 13 outer jackets, 14 3 core power cable unit.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described, but the present invention is not limited to following examples.
As shown in Figure 1, be the structural representation of single-core power cables unit, it comprises conductor 1, conductor shield 2, insulating barrier 3, insulation screen 4, metal screen layer 5, metal block water sheath 6 and protective layer 7 etc.Conductor 1 forms by solid copper single line is stranded.Outside conductor 1, being extruded with conductor shield 2, is semiconductive material.Conductor shield 2 is outer is extruded with insulating barrier 3, and insulating barrier 3 can be crosslinked polyethylene, polyethylene or ethylene-propylene rubber.The outer extruded insulation screen 4 of insulating barrier 3, insulation screen 4 is semiconductive material.Conductor shield 2, insulating barrier 3 and insulation screen 4 adopt three-layer co-extruded, and three-decker continues synchronously to extrude.At the outer winding metal screen layer 5 of insulation screen 4, for resisting external electromagnetic interference, prevent the external Radiative EMI of conductor simultaneously.Metal screen layer 5 is outside for stoping moisture intrusion, can be lead sheath for the layer of metal sheath 6 that blocks water, and can be also copper sheath, or other metal or alloy materials.When block water sheath 6 of metal adopts the metal material of conduction, for example adopt copper sheath, can save metal screen layer 5.Metal blocks water sheath outward for extruded polymer protective layer 7, and polymer can be polyvinyl chloride, polyamide and polyurethane.
As shown in Figure 2, be the dynamic submarine cable bundle of 6 core deep water, it comprises single-core power cables unit 8, cable gap fill material 9, dynamic ballast unit 10, inner cushion layer 11, spiral metal armour 12 and outer jacket 13.6 single-core power cables unit 8, many cable gap fill material 9 not of uniform size, the common twisted synthesizing cable in multiple dynamic ballasts unit 10.Single-core power cables unit 8, cable gap fill material 9, dynamic ballast unit 10 are all uniformly distributed by concentric circles rotation.There is polyethylene extrusion inner cushion layer 11 outside of stranding, for the protection of cable and the cable gap fill material 9 of bunchy, makes it avoid corrosion and wearing and tearing.Inner cushion layer 11 is outer is two helical layer metal armouring layers 12, the metal armouring hand of spiral of adjacent two layers is contrary, the distance that metal armouring single line advances along electric cable rotary for one week be under armour 10～30 times of bunch of cables diameter (taking 25 times as example, if the diameter of stranding is 100mm, on the long cable of 2500mm, armour rotates a circle just), the outside of spiral metal armour 12 is that polyethylene is extruded outer jacket 13.
As shown in Figure 3, be the structural representation of three core power cable unit, it comprises 3 single-core power cables unit 8, many cable gap fill material 9 not of uniform size and outer jacket 13.3 single-core power cables unit 8, the many common twisted synthesizing cables of cable gap fill material 9 not of uniform size.Single-core power cables unit 8 and cable gap fill material 9 are all uniformly distributed by concentric circles rotation.There is polyethylene extrusion power cable outer jacket 13 outside of stranding, for the protection of single-core power cables and the cable gap fill material of stranding, makes it avoid corrosion and wearing and tearing.
As shown in Figure 4, be the dynamic submarine cable bundle of 9 core deep water, it comprises 3 three core power cable unit 14, cable gap fill material 9, dynamic ballast unit 10, inner cushion layer 11, spiral metal armour 12 and outer jackets 13.3 three core power cable unit 14, many cable gap fill material 9 not of uniform size, the common twisted synthesizing cable in multiple dynamic ballasts unit 10.Three core power cable unit 14, cable gap fill material 9 and dynamic ballast unit 10 are all uniformly distributed by concentric circles rotation.There is polyethylene extrusion inner cushion layer 11 outside of stranding, for the protection of cable and the cable gap fill material of bunchy, makes it avoid corrosion and wearing and tearing.Inner cushion layer is outward two helical layer metal armouring layers 12, and the metal armouring hand of spiral of adjacent two layers is contrary, and the distance that metal armouring single line advances along electric cable rotary for a week is 10～30 times of bunch of cables diameter under armour.The outside of multi-layer helical metal armouring layer 12 is that polyethylene is extruded outer jacket 13.
As shown in Figure 5, be the dynamic submarine cable bundle of 12 core deep water, it comprises 4 three core power cable unit 14, cable gap fill material 9, dynamic ballast unit 10, inner cushion layer 11, spiral metal armour 12 and outer jackets 13.4 three core power cable unit 14, many cable gap fill material 9 not of uniform size, the common twisted synthesizing cable in multiple dynamic ballasts unit 10.Three core power cable unit 14, cable gap fill material 9 and dynamic ballast unit 10 are all uniformly distributed by concentric circles rotation.There is polyethylene extrusion inner cushion layer 11 outside of stranding, for the protection of cable and the cable gap fill material of bunchy, makes it avoid corrosion and wearing and tearing.Inner cushion layer is outward two spiral metal armours 12 layer by layer, and the metal armouring hand of spiral of adjacent two layers is contrary, and the distance that metal armouring single line advances along electric cable rotary for a week is 10～30 times of bunch of cables diameter under armour.The outside of multi-layer helical metal armouring layer 12 is that polyethylene is extruded outer jacket 13.
As shown in Figure 6, be the dynamic submarine cable bundle of 15 core deep water, it comprises 5 three core power cable unit 14, cable gap fill material 9, dynamic ballast unit 10, inner cushion layer 11, spiral metal armour 12 and outer jackets 13.5 three core power cable unit 14, many cable gap fill material 9 not of uniform size, the common twisted synthesizing cable in multiple dynamic ballasts unit 10.Three core power cable unit 14, cable gap fill material 9 and dynamic ballast unit 10 are all uniformly distributed by concentric circles rotation.There is polyethylene extrusion inner cushion layer 11 outside of stranding, for the protection of cable and the cable gap fill material of bunchy, makes it avoid corrosion and wearing and tearing.Inner cushion layer is outward two helical layer metal armouring layers 12, and the metal armouring hand of spiral of adjacent two layers is contrary, and the distance that metal armouring single line advances along electric cable rotary for a week is 10～30 times of bunch of cables diameter under armour.The outside of multi-layer helical metal armouring layer 12 is that polyethylene is extruded outer jacket 13.
As shown in Figure 7, be the dynamic submarine cable bundle of 18 core deep water, it comprises 6 three core power cable unit 14, cable gap fill material 9, dynamic ballast unit 10, inner cushion layer 11, spiral metal armour 12 and outer jackets 13.6 three core power cable unit 14, many cable gap fill material 9 not of uniform size, the common twisted synthesizing cable in multiple dynamic ballasts unit 10.Three core power cable unit 14, cable gap fill material 9 and dynamic ballast unit 10 are all uniformly distributed by concentric circles rotation.There is polyethylene extrusion inner cushion layer 11 outside of stranding, for the protection of cable and the cable gap fill material of bunchy, makes it avoid corrosion and wearing and tearing.Inner cushion layer is outward two helical layer metal armouring layers 12, and the metal armouring hand of spiral of adjacent two layers is contrary, and the distance that metal armouring single line advances along electric cable rotary for a week is 10～30 times of bunch of cables diameter under armour.The outside of multi-layer helical metal armouring layer 12 is that polyethylene is extruded outer jacket 13.
The dynamic submarine cable of deep water of the present invention is intrafascicular, and the concrete required number of plies of the number of plies of spiral metal armour 12 has more the applied marine site of the dynamic submarine cable bundle of deep water and determines; Round metal single line (metal armouring single line) is generally zinc plated mild carbon steel, also can have certain mechanical strength and quality and corrosion resistant metal for stainless steel, copper etc.
The dynamic submarine cable of deep water of the present invention is intrafascicular, and inner cushion layer 11 also can be made up of materials such as polyvinyl chloride, polyamide or polyurethane, for the protection of cable and the described cable gap fill material of bunchy, makes it avoid corrosion and wearing and tearing.
The dynamic submarine cable of deep water of the present invention is intrafascicular, and cable gap fill material 9 is made up of flexible polymer, as polypropylene, has sea water corrosion resistant.
The dynamic submarine cable of deep water of the present invention is intrafascicular, dynamic ballast unit 10 is made up of metallic steel, as plastic die steel GSW2083, can guarantee that the dynamic submarine cable bundle of whole piece has certain quality, make it in deep water, be subject to suitable gravity, while moving when being subject to the impact of deep water marine environment condition, motion amplitude keeps within the specific limits, and then keeps certain fatigue life.
The present invention is not limited to above-mentioned execution mode, in the scope that does not depart from aim of the present invention, can carry out various changes.
For example, the dynamic submarine cable of deep water is intrafascicular, except comprising power cable, can also comprise optical cable.The filling in cable space not only can utilize rounded material stranded, can be also to form irregularly shapedly by clamp-oning polymer-filled material, and the polymer-filled material of clamp-oning keeps basic Rotational Symmetry.The conductor of bunch of cables, except copper, can be also aluminium or other electric conducting materials.
In addition, in the above-described embodiment, illustrate dynamic deep water submarine cable bundle is powered to the power consumption equipment such as booster pump or electric immersible pump for oil extraction under water, but purposes of the present invention being not limited thereto, can be also the power consumption equipment power supply for other deepwater oil-gas developments.
Claims (9)
1. the dynamic submarine cable bundle of deep water, it is characterized in that: it comprises some power cables unit, cable gap fill material and dynamic ballast unit, the cross section of described cable gap fill material and described dynamic ballast unit is circle, described power cable unit, described cable gap fill material and described dynamic ballast unit twisted synthesizing cable; Described cable gap fill material and described dynamic ballast unit are all evenly arranged in the space between described power cable unit;
The cable that described twisted synthesizing cable obtains is coated with inner cushion layer, spiral metal armour and outer jacket outward successively.
2. submarine cable bundle according to claim 1, is characterized in that: described power cable unit is single-core power cables unit or three core power cable unit.
3. submarine cable bundle according to claim 2, is characterized in that: the dynamic submarine cable bundle of described deep water comprises that the quantity of described single-core power cables unit is 3n, the natural number that wherein n is >=2.
4. submarine cable bundle according to claim 2, is characterized in that: the dynamic submarine cable bundle of described deep water comprises that the quantity of described three core power cable unit is not less than 3.
5. submarine cable bundle according to claim 4, is characterized in that: the dynamic submarine cable bundle of described deep water comprises that the quantity of described three core power cable unit is the natural number between 3～6.
6. according to the submarine cable bundle described in any one in claim 1-5, it is characterized in that: described power cable unit, described cable gap fill material and described dynamic ballast unit carry out twisted synthesizing cable in the mode of concentric circles rotation.
7. according to the submarine cable bundle described in any one in claim 1-6, it is characterized in that: the dynamic submarine cable bundle of described deep water comprises at least 2 layers of described spiral metal armour, and the hand of spiral of adjacent described spiral metal armour is contrary.
8. according to the submarine cable bundle described in any one in claim 1-7, it is characterized in that: described cable gap fill material is made up of flexible polymer;
Described dynamic ballast unit is made up of metallic steel.
9. according to the submarine cable bundle described in any one in claim 1-8, it is characterized in that: described inner cushion layer is made up of polyethylene, polyvinyl chloride, polyamide or polyurethane;
Described outer jacket is made up of polyethylene.
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| CN201410112550.2A CN103886960A (en) | 2014-03-25 | 2014-03-25 | Deepwater dynamic submarine cable bunch |
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| CN201410112550.2A CN103886960A (en) | 2014-03-25 | 2014-03-25 | Deepwater dynamic submarine cable bunch |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201044189Y (en) * | 2006-12-11 | 2008-04-02 | 中国海洋石油总公司 | Multi-core high and low voltage mixture undersea cable |
| US20100252300A1 (en) * | 2009-04-06 | 2010-10-07 | Oceaneering International, Inc. | Electromagnetically Shielded Subsea Power Cable |
| CN101901643A (en) * | 2010-08-04 | 2010-12-01 | 中天科技海缆有限公司 | Bunched frequency conversion submarine cable and manufacturing method thereof |
| CN202268201U (en) * | 2011-07-19 | 2012-06-06 | 中国海洋石油总公司 | Umbilical of subsea production system |
| CN203165504U (en) * | 2013-03-11 | 2013-08-28 | 上海斯瑞科技有限公司 | Polyethylene fiber armored umbilical cable |
| CN203746474U (en) * | 2014-03-25 | 2014-07-30 | 中国海洋石油总公司 | Deepwater dynamic submarine cable bunch |
-
2014
- 2014-03-25 CN CN201410112550.2A patent/CN103886960A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201044189Y (en) * | 2006-12-11 | 2008-04-02 | 中国海洋石油总公司 | Multi-core high and low voltage mixture undersea cable |
| US20100252300A1 (en) * | 2009-04-06 | 2010-10-07 | Oceaneering International, Inc. | Electromagnetically Shielded Subsea Power Cable |
| CN101901643A (en) * | 2010-08-04 | 2010-12-01 | 中天科技海缆有限公司 | Bunched frequency conversion submarine cable and manufacturing method thereof |
| CN202268201U (en) * | 2011-07-19 | 2012-06-06 | 中国海洋石油总公司 | Umbilical of subsea production system |
| CN203165504U (en) * | 2013-03-11 | 2013-08-28 | 上海斯瑞科技有限公司 | Polyethylene fiber armored umbilical cable |
| CN203746474U (en) * | 2014-03-25 | 2014-07-30 | 中国海洋石油总公司 | Deepwater dynamic submarine cable bunch |
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Application publication date: 20140625 |