WO2017038524A1

WO2017038524A1 - Floating offshore facility, power supply method for floating offshore facility

Info

Publication number: WO2017038524A1
Application number: PCT/JP2016/074346
Authority: WO
Inventors: 雅晴中山; 浩太朗高野; 真理岡安; 樹人大隣
Original assignee: 三井造船株式会社
Priority date: 2015-08-31
Filing date: 2016-08-22
Publication date: 2017-03-09
Also published as: CN107709153A; KR20180051443A; JP2017047718A; SG11201801626VA

Abstract

Electric power generation facilities 40, 50 for supplying electric power to a production facility 30 and to facilities other than the production facility are configured with: a first-group electric power generation facility 40 which supplies electric power to the production facility 30, and which is disposed in a production facility region Rp on an upper deck 3; and a second-group electric power generation facility 50 which supplies electric power to facilities other than the production facility, and which is disposed in a safety region Rs other than the production facility region Rp. Consequently, the space required for the electric power generation facilities in the production facility region on the upper deck is reduced, whereby the space for the facility for production as an offshore facility is increased, and risks are spread in the event of trouble with the electric power systems of the electric power facilities.

Description

Floating offshore facility and power supply method for floating offshore facility

The present invention relates to a floating offshore facility and a power supply method for a floating offshore facility, and more specifically, a space for a power generation facility in a production facility area on an upper deck can be reduced. A floating offshore facility that can increase the space for facilities for production as a facility and can also disperse the risk when a power system trouble occurs in a power generation facility, and a floating offshore facility The present invention relates to a power supply method.

FPSO (floating production storage and loading equipment), FSO (floating type storage and loading equipment), which is equipped with oil and gas production facilities and cargo handling facilities, and is used for a long period of time and held at a specific offshore installation location Floating offshore facilities such as LNG, FSU (floating body storage facility), and LNG handling FLNG (liquefied storage and loading facility) are generally engaged in production activities while maintaining their position on the ocean by mooring etc. And temporary storage of products. Floating offshore facilities equipped with this production facility are generally equipped with cargo tanks that temporarily store oil and gas, which are products, below the upper deck, and the production facilities are placed on the upper deck. is doing. The area around the cargo tanks and production facilities for products that generate flammable gas is considered a hazardous area, and explosion-proof equipment is used.

These floating offshore facilities may be constructed by modifying existing VLCCs (large tankers), but there are also many restrictions, so there are also cases where new offshore facilities are built by construction.

This floating offshore facility has the following circumstances different from ordinary ship construction. Production equipment designed to match the characteristics of the oil well is generally installed after the hull is built. Therefore, details are often not decided at the time of designing on the hull side, and the parts related to the production facility area are changed according to the specific conditions of each floating offshore facility. There is a tendency that the mounting on the top is likely to be just before the delivery date.

Conventionally, as shown in FIGS. 7 and 8, in the floating offshore facility 1X, there are about 2 to 8 units in the production facility area Rp on the upper deck 3 (in FIG. 7, 3 units × 2 horizontal rows). A group of power generation equipment 40X composed of six gas turbine generators is provided. Then, with one group of power generation equipment 40X installed on the upper deck 3, power for production equipment, power for cargo handling equipment (loading pump device, etc.) other than power for production equipment, power for residential areas, etc. All the electric power required for the floating offshore facility 1X is generated and supplied.

Therefore, in the conventional floating offshore facility 1X, since it is necessary to install a large-scale power generation facility 40X in the production facility area Rp on the upper deck 3, there is a corresponding space for the production facility 30. There was a problem of becoming smaller. Furthermore, when a power system trouble occurs in the power generation equipment 40X installed in the production equipment area Rp on the upper deck 3, not only the production equipment 30 but also the other floating offshore equipment 1X other than the production equipment 30 is configured. There is a problem that all the power supply to the facilities (for example, the loading device and the power supply for residential areas) is also stopped. In addition, in order to supply electric power for operating the cargo handling facility in the event of an emergency, it was necessary to separately equip a generator for emergency cargo handling (for emergency-offloading).

That is, power generation facilities as all power sources for facilities other than production facilities including production facilities and cargo handling (offloading) are collectively arranged in the production facility area. Therefore, if a power system trouble occurs in the production facility area, all of the power for the production facility, the cargo handling device, the residential area, etc. will be lost, and all these devices will be stopped. Emergency generator (for emergency offloading) will be equipped separately.

As for this power generation facility, for example, as described in Japanese Patent Application Laid-Open No. 2004-17805, it relates to an electric propulsion ship, and has a plurality of generators and an engine that drives the generator. Multiple power generation units that are detachably attached can be selectively operated and supplied according to the amount of power required to drive a motor that rotates a propeller for propulsion and a power consuming device other than this motor. Power generation facilities for electric propulsion vessels have been proposed.

In this power generation facility, when a problem occurs in some power generation units, power is supplied from another power generation unit. Therefore, power supply to each facility can be ensured for troubles in the power system. Responding to the problem of securing space for the production equipment area on the deck, and the subject of designing power generation equipment for production equipment and other power generation equipment differing, and the timing of determining each power generation equipment is different Can't solve the problem.

In addition, when building a floating offshore facility rather than remodeling the VLCC, it is often not equipped with a propeller or other propulsion device or a propulsion device that drives this propulsion device, so it does not have its own means of transportation. There is also a problem that the initial transportation cost is very expensive because it must be towed to the production site or transported by a heavy-duty carrier.

Also, propulsion with low-speed diesel may be performed in the same way as a normal tanker, but in this case, the low-speed diesel propulsion device used for propulsion cannot be removed after arrival at the production site, and there is a problem that it becomes disposable.

Japanese Patent Application Publication No. 2004-17805

The present invention has been made in view of the above-mentioned situation, and the object thereof is to reduce the space for power generation equipment in the production equipment area on the upper deck, for production as offshore equipment. To provide a floating offshore facility that can increase the space for the facility and also can disperse the risk when a power system trouble occurs in the power generation facility, and a power supply method for the floating offshore facility It is in.

A floating offshore facility for achieving the above object includes a production facility supplied with power by a power generation facility and a facility other than the production facility, and is used in a state of being held on the ocean. The power generation facility supplies power to the production facility and supplies power to a first group of power generation facilities disposed in the production facility area above the upper deck and facilities other than the production facility. And a second group of power generation equipment arranged in a safe area other than the production equipment area.

The “production equipment” here includes equipment such as oil processing equipment, gas processing equipment, water treatment equipment, and control system for processing crude oil or natural gas.

That is, the first group of power generation facilities that serve as a large-scale power generation device (for example, 100 MW class) that supplies power to the production facility, and the medium-scale power generation device (for example, 10 MW class) that supplies power to facilities other than the production facility The power generation equipment is divided into the second group of power generation equipment, which are arranged in a production equipment area and a safety area (for example, a machine room).

In other words, the first group of power generation equipment is located in the production equipment area above the upper deck, and the second group of power generation equipment is located in the safety area excluding the production equipment area and the hazardous area. When the power generation equipment of the first group and the power generation equipment of the second group are operating normally, the power is supplied to the production equipment from the power generation equipment of the first group, and the equipment other than the production equipment is second. In this configuration, power is supplied from the power generation equipment of the group.

According to this configuration, a part of the first group of power generation equipment, which is conventionally composed of large-scale power generation equipment installed in the production equipment area, is installed in a safety area other than the production equipment area. The upper deck where the equipment is installed is widely available. In other words, the second group of power generation equipment that supplies power to equipment other than the production equipment does not have to be arranged in the production equipment area above the upper deck, so the first group of power generation equipment is arranged accordingly. Can be reduced, and the space for facilities for production as offshore facilities can be increased.

At the same time, it is possible to disperse the risk when a power system trouble occurs in the power generation facility. In other words, even if trouble occurs in the first group of power generation equipment that is a power supply system for production equipment, the second group of power generation equipment can be used for equipment other than the production equipment, such as cargo handling equipment and residential area equipment. On the other hand, it becomes possible to continue power feeding. That is, since the power generation plants are separated according to use for power supply to production facilities and for power supply to facilities other than the production facilities, it is possible to construct a power plant that is not affected by one failure or trouble.

In addition, when constructing a new floating offshore facility, production facilities designed to the characteristics of the oil well are generally installed after the hull is built, so the details are determined when the hull is designed. As a result, the hull design schedule and the production equipment design schedule do not match, but in this case, the design and installation of the second group of power generation equipment used on the hull side is the first. It becomes possible to proceed separately from the design and installation of the power generation equipment of the group. In other words, because the power plant can be separated for power supply to production equipment and power to equipment other than production equipment, design of power generation equipment for power supply to equipment other than production equipment due to design delay of production equipment This makes it easy to modularize the power plant.

Also, at least a part of the power generation equipment of the second group is composed of a dual fuel diesel generator called DFDE (Dual-Fuel-Diesel-Electric) that can be driven by both heavy oil fuel and gas fuel. If a diesel generator is simply installed, it is necessary to constantly supply heavy oil as fuel, but this dual fuel diesel generator generates electricity using heavy oil fuel before production facilities are in operation. When the facility is in operation and can produce crude oil and gas, it will be possible to generate electricity using the gas produced in this production facility as fuel, and gas fuel can be used effectively. In addition, the dual fuel diesel generator has a higher degree of freedom in the supply and exhaust facilities than the gas turbine generator. As a result, the degree of freedom in selecting the installation location of the second group of power generation facilities is greatly expanded. This makes it possible to easily arrange the second group of power generation facilities in a safety area other than the production equipment area on the upper deck.

In addition, if it is configured so that cargo handling equipment such as cargo oil pump (COP) and other equipment can be driven by the power generated by the power generation equipment of the second group, the influence of the power generation equipment of the first group that supplies power to the production equipment can be reduced. It is possible to perform performance verification (commissioning) work to grasp the required performance without receiving it. In other words, if the power generation equipment of the second group can be used without waiting for the completion of the power generation equipment of the first group, it is directly related to the production equipment such as cargo handling equipment, residential area equipment and possibly propulsion equipment. This makes it possible to grasp and verify the required performance of facilities that do not.

In addition, if the power generation equipment of the second group is configured to supply power to operate the cargo handling equipment in an emergency, the power generation equipment and the installation location thereof are divided according to use, so that the power generation equipment of the second group in the safety area Since the generator for emergency cargo handling (for Emergency Offloading) can also be used, the generator for emergency cargo handling can be reduced.

In the floating offshore facility described above, the floating-type offshore facility is configured to include a connection destination changing mechanism that electrically connects the power generation facility of the first group and the power generation facility of the second group, and the connection destination changing mechanism includes , Power interchange between the first group of power generation facilities and the second group of power generation facilities in parallel, or all of the power supply by the other power generation facility by operating one of the power generation facilities or In other words, the power generation equipment of the first and second groups arranged in the safety area other than the production equipment area and the production equipment area as an emergency response. The following effects can be obtained if the configuration is such that the mutual operation and feedback power feeding can be performed.

In other words, an unplanned amount of power supply is required in the event of an emergency in the event that one group's power generation facilities fail, production facilities fail, or accidents occur, or some of these power generation facilities are undergoing maintenance and inspection. Even in this case, mutual power feeding is possible, and a sufficient power feeding system can be secured. That is, even if a part of the power generation equipment of one of the groups breaks down, it can be compensated for each other, and can flexibly cope with an emergency.

More specifically, in the above floating offshore facility, the power generation capacity of the second group of power generation facilities is configured to be 5 MW to 30 MW.

In the above floating offshore facility, the second group of power generation facilities includes a plurality of power generation facilities, and when the plurality of power generation facilities are separated and arranged at two or more locations, In the event of a failure or accident in the area where one of these power generation facilities is located, or when some of these power generation facilities are unscheduled during maintenance Even when the amount of power supply becomes necessary, a sufficient power supply system can be secured. That is, even if one power generation facility of the second group power generation facility breaks down, it can compensate for each other. In addition, the space per location can be reduced with respect to the location where the second group of power generation facilities is arranged.

The location of the power generation equipment of the second group is on the upper deck on the stern side of the machine room and the production equipment area, on the upper deck on the bow side of the production equipment area, and on the production equipment area. In addition, the inside of the hull on the bow side, the inside of the hull on the stern side of the production facility area, the inside of the superstructure, the location above the superstructure, or some combination of locations can be selected.

The floating offshore facility includes a propulsion unit, a propulsion unit that drives the propulsion unit, and a voyage facility, and supplies power for operating the propulsion unit and the voyage facility from the power generation facility of the second group. In other words, the machine room (engine room) is equipped with a propulsion motor, propulsion shaft, propeller, inverter, etc., and a part of the upper structure is equipped with a bridge, and this bridge is equipped with navigation facilities. Can be used as a power source for the propulsion system for self-propulsion.

According to this configuration, when the floating offshore facility is moved, it is not necessarily installed in the state in which the first group of power generation facilities are installed, or the production facility is operated and the gas produced by the production facility is used as fuel. Even when navigating in such a state that the first group of power generation facilities cannot operate, it is possible to navigate without waiting for the completion of the first group of power generation facilities.

In addition, by configuring the power generation equipment of the second group for power supply to equipment other than production equipment so that power can be supplied to both cargo handling equipment and propulsion equipment, both of these equipments can be used simultaneously. Therefore, the power generation equipment of the second group can be shared and shared by both the cargo handling equipment and the propulsion equipment, and the entire power plant can be downsized.

The propulsion equipment is configured to be detachable from the floating offshore equipment. In other words, the propulsion equipment and the navigation equipment, such as the electric propulsion apparatus, the propulsion control apparatus, and the navigation equipment, are floating bodies. Since it is used only when moving offshore equipment, it is temporarily provided only during this movement, removed after movement, and configured to be usable for other floating offshore equipment, thereby reducing the overall equipment cost. be able to. Moreover, the space can be used effectively by removing it except when navigating.

In the above floating offshore facility, the floating offshore facility is equipped with a temporary power generation facility (Temporary power generation facility) that is arranged in a safe area excluding the hazardous area. However, if the power generation capacity of the power generation facility can be changed as a whole, the power generation capacity is temporarily increased in the event of an emergency such as a temporary increase in the required power capacity or an unexpected generator failure. Can be supported. This makes it possible to flexibly cope with an operation that temporarily requires electric power, such as when navigating to a production site.

More specifically, if the power generation capacity of this temporary power generation facility is set to 5 MW to 25 MW, the temporary power generation facility and sufficient auxiliary power can be supplied.

The temporary power generation facility includes a connection destination switching mechanism that is electrically connected to one or both of the first group power generation facility and the second group power generation facility. , Supply of power to one or both of the first group of power generation facilities and the second group of power generation facilities by parallel operation of the temporary power generation facilities, or the operation of the temporary power generation facilities, or the first group of power generation facilities And the second group of power generation facilities, or the power generation facilities of either one or both of the power generation facilities are switched to the power supply that takes over all of them, in other words, as a response in case of an emergency, exclude dangerous areas If the temporary power generation equipment placed in the safe area is configured to perform parallel operation with the power generation equipment of the first and second groups and feedback power supply, It has the advantages described.

In other words, in the event of a failure in the first or second group of power generation equipment, or in the event of a failure or accident in the production equipment, or when some of these power generation equipment is under unscheduled power supply during maintenance inspections Even when the amount becomes necessary, the power supply can be supplemented by the temporary power generation facility, and a sufficient power supply system can be secured. That is, even if a part of the power generation equipment of one of the groups breaks down, it can be supplemented by the temporary power generation equipment, and can flexibly cope with an emergency.

In the above floating offshore facilities, the floating offshore facilities include floating offshore oil and gas production storage and loading equipment (FPSO), floating storage and loading equipment (FSO), floating storage equipment (FSU), and LNG. The effect of the above configuration becomes greater when it is one of a liquefied storage / loading facility (LNG-FPSO), an FLPG (LPG-FPSO) that handles LPG, and a floating storage regasification facility (FSRU). .

And the power supply method of the floating offshore facility for achieving the above object is provided with a production facility supplied with power by the power generation facility and a facility other than the production facility, and used in a state of being held on the ocean. In the method of supplying power to a floating offshore facility, the power generation facility is configured to supply power to the production facility and from a first group of power generation facilities disposed in the production facility area on the upper deck. A method of supplying electric power to the production facility and supplying electric power to a facility other than the production facility from a second group of power generation facilities arranged in a safety area other than the production facility area. .

According to this method, the power capacity of the power generation facility in the production facility area above the upper deck is supplied by supplying power for each purpose from the power generation facilities that are distributed and arranged separately for each purpose. Can reduce the installation space for this power generation facility, increase the space for production facilities, and can also distribute the risk when a power system trouble occurs in the power generation facility .

According to the floating offshore facility and the power supply method for the floating offshore facility of the present invention, the power generation facility of the floating offshore facility, which is large-scale, is divided according to use, and the first group power generation facility and production for the production facility. For power generation equipment of the second group for power supply other than equipment, and for the production equipment above the upper deck by distributing and arranging in the production equipment area above the upper deck and the safety area other than this production equipment area The space for power generation facilities in the area can be reduced, the space for production as offshore facilities can be increased, and the risk when power system troubles in power generation facilities occur is distributed can do.

In other words, even if trouble occurs in the first group of power generation equipment that is a power supply system for production equipment, the second group of power generation equipment can be used for equipment and equipment other than production equipment, such as cargo handling equipment and residential area equipment. On the other hand, it becomes possible to continue power feeding. In addition, if the floating offshore facility is equipped with a propeller and a propulsion device that drives the propeller, this second group of power generation facilities can also be used as a generator for the propulsion device. It is possible to reduce the equipment cost when sailing.

FIG. 1 is a side sectional view schematically showing the configuration and arrangement of a power generation facility of a floating offshore facility according to a first embodiment of the present invention. FIG. 2 is a plan view on the stern side schematically showing the configuration and arrangement of the power generation facility of the floating offshore facility according to the first embodiment of the present invention. FIG. 3 is a side cross-sectional view schematically showing a configuration in the case where the second group of power generation facilities are separately arranged in the floating offshore facility according to the first embodiment of the present invention. FIG. 4 is a side sectional view schematically showing the configuration and arrangement of the power generation facility of the floating offshore facility according to the second embodiment of the present invention. FIG. 5 is a side sectional view of the machine room schematically showing the configuration of the machine room of the floating offshore facility according to the second embodiment of the present invention. FIG. 6 is a side sectional view schematically showing the configuration and arrangement of the power generation facility of the floating offshore facility according to the third embodiment of the present invention. FIG. 7 is a side sectional view schematically showing the configuration and arrangement of the power generation equipment of the floating offshore equipment in the prior art. FIG. 8 is a plan view on the stern side schematically showing the configuration and arrangement of the power generation equipment of the floating offshore equipment in the prior art.

Hereinafter, a floating offshore facility according to an embodiment of the present invention and a power supply method for the floating offshore facility will be described with reference to the drawings. The “production equipment” here includes equipment such as oil processing equipment, gas processing equipment, water treatment equipment, and control system for processing crude oil or natural gas.

As the floating offshore equipment of this embodiment, FPSO (floating body production storage and loading equipment) will be described as an example, but the present invention is not limited to this FPSO, and if it is a floating offshore equipment, Can be applied.

For example, FSO (floating storage and loading equipment) and FSU (floating storage equipment) without oil and gas production facilities, FLNG (liquefied storage and loading equipment: LNG-FPSO) that handles LNG, FLPG that handles LPG ( The present invention can also be applied to LPG-FPSO), FSRU (floating body storage regasification facility), and the like.

In general, floating offshore facilities such as FPSO often have almost the same shape as a vessel such as a VLCC (large tanker), so here the names of each part also conform to those of a vessel such as a VLCC. This will be explained using names such as “hull”, “stern” and “upper deck”.

As shown in FIGS. 1 and 2, the floating offshore facility 1A according to the first embodiment has a shape substantially similar to that of a vessel such as a VLCC, and is installed on the ocean with an oil field or the like from a factory or a port. It is towed or self-navigated to a place, and is used in a state where it is held on the ocean at this offshore installation location by a mooring system.

As shown in FIGS. 1 and 2, this floating offshore facility 1A has a hull 2,

upper decks

3, 3a, 3f, stern 4 and bow 8, below the upper deck 3a of this stern 4. The machine room 5 (usually called an engine room when a propulsion device is provided), the upper structure 6 including the living area 6 a above the machine room 5, and the cargo hold 7 in front of the machine room 5 , Each provided. In addition, a bow portion 8 is provided in front of the cargo hold 7. Note that the floating offshore facility 1A according to the first embodiment does not include a propulsion unit used for movement, and cannot be self-propelled.

The floating offshore facility 1A is not shown in addition to the production facility 30, the machine room 5, the upper structure 6 including the living area 6a, the cargo hold 7 in which the oil storage (gas) tank is installed, and the like. However, it is equipped with cargo handling equipment (shipping equipment), mooring equipment such as risers, mooring lines and anchors, and an automatic position holding system having propulsion devices such as heliports and azimuth thrusters as required.

This floating offshore facility 1A includes a production facility 30 to which power is supplied by

power generation facilities

40, 50, a residential area facility 60 other than the production facility 30, a cargo handling facility (not shown), a cargo pump (not shown), and the like. It is used in a state of being held on the ocean with "equipment other than production equipment" including The production facility 30 is, for example, a production facility 30 that processes crude oil or natural gas, and includes an oil treatment facility, a gas treatment facility, a water treatment facility, a control system, and the like. It is installed in the production facility area Rp on the upper deck 3 of the upper deck.

In the present invention, in the floating offshore facility 1A, the

power generation facilities

40 and 50 supply power to the production facility 30 and are disposed in the production facility area Rp on the upper deck 3. The power generation facility 40 includes a second group of power generation facilities 50 that supply power to facilities other than the production facility and are disposed in the safety area Rs other than the production facility area Rp. That is, during normal operation, the first group of power generation equipment 40 supplies power to the production equipment 30 and the second group of power generation equipment 50 supplies power to equipment other than the production equipment.

Hazardous area Rd is any place where flammable or explosive vapors, gases, dusts or explosives may normally accumulate, and specifically, this hazardous area Rd is a production facility area Rp. And cargo holds that temporarily store the oil and gas produced. The safe area Rs is an area other than the dangerous area Rd. Specifically, in the safety zone Rs, the machine room 5, the upper deck 3 a of the stern 4, the upper deck 3 f of the bow 8, the hull of the stern 4, the hull of the bow 8, the upper part The inside of the structure 6 and the upper part of the upper structure 6 are included.

The power generation equipment 40 of the first group in the power generation equipment group that supplies power to the production equipment 30 is usually about 4 to 8 power generation apparatuses 41a (four in the configuration of FIGS. 1 and 2). 41b, 41c, 41d, etc., and in the configuration of FIGS. 1 and 2, these are arranged in two rows horizontally between the upper structure 6 and the production facility 30. By configuring the first group of power generation facilities 40 with a plurality of

power generation devices

41a, 41b, 41c, and 41d, it is normally energized even if some of the power generation devices (for example, 41a) are maintained and inspected. Can be maintained. Therefore, according to this configuration, even if a part of the power generation devices (for example, 41b) breaks down, the failed power generation device (for example, 41b) can be repaired or replaced while maintaining the power supply. Can be less affected.

On the other hand, the power generation equipment 50 of the second group of power generation equipment that supplies power to equipment other than production equipment is usually about 2 to 4 power generators (two in the configuration of FIGS. 1 and 2). 51a, 52b, etc., which are in the machine room 5, on the upper deck 3a of the stern part 4, on the upper deck 3f of the bow part 8, inside the hull of the stern part 4, inside the hull of the bow part 8, upper part It is arranged in the safety zone Rs such as the inside of the structure 6 and the upper structure 6, more preferably in the machine room 5 or in the hull of the stern part 4. In the configuration of FIGS. 1 and 2, the two power generation devices 51 a and 52 b configuring the second group of power generation facilities 50 are arranged in two rows horizontally in the machine room 5.

That is, the

power generation facilities

40 and 50 are a large-scale power generation device (for example, 100 MW class) that supplies power to the production facility 30 and a medium-scale power generation device (for example, power supply to facilities other than the production facility). (10 MW class) is divided into the second group of power generation facilities 50, which are arranged in the production facility area Rp and the safety area Rs.

In other words, the first group of power generation equipment 40 is arranged in the production equipment area Rp on the upper deck 3, and the second group of power generation equipment 50 is in the safety area Rs excluding the production equipment area Rp and the danger area Rd. When the first group of power generation facilities 40 and the second group of power generation facilities 50 are in normal operation, power is supplied to the production facility 30 from the first group of power generation facilities 40. In addition, power is supplied from the second group of power generation facilities 50 to facilities other than the production facilities.

According to this configuration, a part of the first group of power generation facilities 40 constituted by large-scale power generation devices that were conventionally equipped in the production facility area Rp is equipped in the safety area Rs other than the production facility area Rp. Therefore, the upper deck 3 on which the production equipment 30 is installed can be widely used. That is, the second group of power generation facilities 50 that supply power to facilities other than the production facilities do not have to be arranged in the production facility area Rp on the upper deck 3, and accordingly, the first group of power generation facilities. The space for arranging 40 can be reduced, and the space for facilities for production as offshore facilities can be increased.

At the same time, it is possible to disperse the risk when a power system trouble occurs in the

power generation facilities

40, 50. That is, even if a trouble occurs in the first group of power generation equipment 40 that is a power supply system for production equipment, the second group of power generation equipment 50 causes equipment other than the production equipment, such as cargo handling equipment and residential areas. It is possible to continue to supply power to the facility 60. That is, since the power generation plants are separated according to use for power supply to the production facility 30 and for power supply to facilities other than the production facility, it is possible to construct a power plant that is not affected by one failure or trouble.

In addition, when constructing a new floating offshore facility 1A, the production equipment designed to match the characteristics of the oil well is generally installed after the hull is built. In many cases, the design schedule of the hull and the design schedule of the production equipment do not match, but in this case, the design and installation of the power generation equipment 50 of the second group used on the hull side, It becomes possible to proceed separately from the design and installation of the power generation equipment 40 of the first group. In other words, since the power plant can be separated for power supply to the production facility 30 and power supply to facilities other than the production facility, the second group for power supply to facilities other than the production facility due to design delay of the production facility 30 This can eliminate the influence on the power generation facility 50, and this facilitates modularization of the power plant.

In addition, if at least a part of the second group of power generation facilities 50 is configured with a dual fuel diesel generator called DFDE (Dual Fuel Diesel Electric) that can be driven by both heavy oil fuel and gas fuel, When a diesel generator is installed, it is necessary to constantly supply heavy oil as fuel. This dual-fuel diesel generator generates electricity with heavy oil fuel before the production facility 30 is operated. When the facility 30 is operated and gas fuel can be produced, it becomes possible to generate power using the gas fuel produced by the production facility 30 and the gas fuel can be used effectively.

In addition, the dual fuel diesel generator has a higher degree of freedom in the supply and exhaust facilities than the gas turbine generator. As a result, the degree of freedom in selecting the installation location of the second group of power generation facilities 50 is greatly expanded. Thus, the second group of power generation facilities 50 can be easily arranged in the safety area Rs other than the production facility area Rp on the upper deck 3.

In addition, when it is configured so that cargo handling equipment (not shown) such as a cargo oil pump (COP) and other equipment can be driven by the power generated by the power generation equipment 50 of the second group, the first group that supplies power to the production equipment 30 It is possible to perform a performance verification (commissioning) operation for grasping the required performance without being affected by the power generation facility 40 of the current generation. In other words, if the power generation equipment 50 of the second group can be used without waiting for the completion of the power generation equipment 40 of the first group, the cargo handling equipment, the residential area equipment 60, and the propulsion equipment described later in some cases As a result, it becomes possible to grasp and verify the required performance of equipment that is not directly related to the production equipment 30.

In addition, if the power generation equipment 50 of the second group is configured to supply power for operating the cargo handling equipment in an emergency, the

power generation equipment

40, 50 and the installation location thereof are divided according to use, so that the second group of the safe area Rs. The generator 50 for emergency cargo handling (for Emergency 緊急 Offloading) can also be used as a generator for emergency cargo handling, so the generator for emergency cargo handling can be reduced.

Furthermore, it has the connection destination change mechanism 81 which electrically connects the power generation equipment 40 of the 1st group, and the power generation equipment 50 of the 2nd group, and this connection destination change mechanism 81 is the power generation equipment 40 of the 1st group. Power exchange between the two and the second group of power generation facilities 50 in parallel, or the entire power supply by the other power generation facility 50 (or 40) due to the operation of one of the power generation facilities 40 (or 50) Or it has the structure switched to the electric power feeding (feedback electric power feeding) which replaces a part.

In other words, as an emergency response, parallel operation of the first and second groups of

power generation facilities

40, 50 arranged in the safety area Rs other than the production equipment area Rp and the production equipment area Rp, and feedback power feeding can be performed. Configure as follows.

As a result, an emergency occurs when the power generation equipment 40 (or 50) of one group is troubled, or the production equipment 30 breaks down or has an accident, or a part of the

power generation equipment

40, 50 is maintained. Even when an unscheduled power supply amount is required during inspection, mutual power supply is possible, and a sufficient power supply system can be secured.

That is, even if a part of the power generation equipment 40 (or 50) of one of the groups breaks down, it is possible to make up for each other and flexibly cope with an emergency. In particular, even if the second group of power generation facilities 50 for supplying power to the residential area facilities 60 break down, power can be preferentially transmitted to the residential area 6a, and the safety of workers working in the production facilities 30 And maintain a healthy environment.

More specifically, the power generation capacity of the first group of power generation facilities 40 is set to 50 MW to 200 MW, and the power required for facilities other than the production facilities so that the power required for the production facilities 30 can be supported. So that the power generation capacity of the second group of power generation equipment 50 is 5 MW to 30 MW.

For example, in the floating offshore facility 1A with a total length of about 300 m, the residential facility 60 requires 1 MW to 2 MW, and the cargo handling facility 1 MW to 2 MW. Note that a power of 5 MW to 6 MW is required for the cargo pump. Considering these, the power generation capacity of the second group of power generation facilities 50 is 7 MW to 10 MW + 5 MW (margin: about half of 7 MW to 10 MW on the left), or the power required by facilities other than production facilities The power generation capacity is about 1.5 times. When the floating offshore facility 1A has an electric propulsion system, the necessary amount is further added as described later.

As shown in FIG. 3, the second group of power generation facilities 50 is further configured by a plurality of

power generation facilities

50A and 50B, and the plurality of

power generation facilities

50A and 50B are separated and arranged at two or more locations. And in case of an emergency when one power generation facility 50A (or 50B) of the second group is troubled or a failure or accident occurs in the area where this one power generation facility 50A (or 50B) is located In addition, even when a part of these power generation facilities 50A (or 50B) requires an unscheduled power supply amount during maintenance and inspection, a sufficient power supply system can be ensured. In FIG. 3, the power generation facility 50A inside the machine room 5 includes two

power generation devices

51a and 51b, and the power generation facility 50B disposed on the upper deck 3f of the bow portion 8 includes two power generation devices 51c. , 51d.

That is, even if one of the power generation facilities 50A (or 50B) of the power generation facilities 50 of the second group breaks down, they can be compensated for each other. In addition, the space per location can be reduced with respect to the location where the second group of power generation facilities 50 is arranged. In addition, even in the case of separate arrangement, it is preferable that the

power generation facilities

50A and 50B configuring the second group of power generation facilities 50 are electrically connected and mutually fed.

The second group of power generation facilities 50 are arranged on the upper deck 3a on the stern side of the machine room 5 and the production equipment area Rp and on the upper deck 3f on the bow side of the production equipment area Rp. The inside of the hull on the bow side of the production equipment area Rp, the inside of the hull on the stern side of the production equipment area Rp, the inside of the upper structure 6, the upper part of the upper structure 6, or some The combination part can be selected. For example, specifically, a cargo handling equipment & cargo oil pump power generator and a residential area & other power generator are separated, the former is placed on the upper deck 3a of the stern part 4, and the latter is machine room 5 is arranged.

In addition, in the case of this separate arrangement, the residential area equipment 60 is 1 MW to 2 MW, the shipping equipment is 1 MW to 2 MW, and the cargo pump is 5 MW to 6 MW. Deploy.

As shown in FIGS. 4 and 5, the floating offshore facility 1B according to the second embodiment includes an electric propulsion system 20 on the stern portion 4 side of the hull 2, and the electric propulsion system 20 is A propeller rotating shaft (propulsion) that is disposed in a machine room (often referred to as an “engine room” when a propulsion unit is provided) 5 in the safety zone Rs and a propeller (propulsion unit) 21 protrudes to the rear side of the stern part 4. An electric motor (propulsion motor) 22 that rotates the propeller rotating shaft 21 a is disposed in the engine room 5. A rudder 23 is disposed behind the propeller 21, and a steering machine 24 for driving the rudder 23 is disposed above the rudder 23. If the floating offshore facility 1B is to be self-propelled, temporarily, temporarily or temporarily, a bridge 6b equipped with the navigation facility 25 is provided on the upper part of the residential area 6a of the upper structure 6 for movement. Use.

That is, the propeller 21, the electric propulsion system 20 that drives the propeller 21 and the rudder 23, and the navigation facility 25 are provided, and the electric power for operating the electric propulsion system 20 and the navigation facility 25 is supplied from the power generation facility 50 of the second group. Configure. In other words, the propeller 21 and the rudder 23 are provided outside the stern part 4, the propulsion motor 22 and the steering gear 24 are provided in the machine room 5 inside the stern part 4, and a part of the bridge of the upper structure 6 ( (Bridge) 6b is provided, and the bridge 6b is equipped with the navigation equipment 25, and the power generation equipment 50 of the second group is used as a power source for the electric propulsion system 20 and the navigation equipment 25. As a power source for the electric propulsion system 20, for example, in the case of the floating offshore facility 1B having a total length of about 300 m, electric power of about 10 to 30 MW including the load on the ship is required.

From the viewpoint of power consumption, it is preferable to set the power generation capacity of the second group of power generation equipment 50 to 10 to 30 MW so as to be compatible with the electric propulsion system 20.

Therefore, when the floating offshore facility 1A according to the first embodiment does not have its own transfer means, it is necessary to tow the floating offshore facility 1A to the production site or to transfer it by a heavy transport ship. Therefore, when long-distance movement occurs, for example, when the floating offshore facility 1A is constructed in Asia and installed in Brazil, the initial transfer cost is very high. However, with this configuration, the floating offshore facility 1B according to the second embodiment can be self-navigating, and transfer by towing or a heavy carrier is not required, so that the initial transfer cost can be reduced.

When the floating offshore facility 1B is moved, the navigation is always performed in a state where the first group power generation facility 40 is not mounted, so the electric propulsion system 20 by the second group power generation facility 50 described above, It becomes possible to navigate without waiting for the completion of the first group of power generation facilities 40.

Further, the second group of power generation equipment 50 for supplying power to equipment other than the production equipment is configured so that power can be supplied to both the cargo handling equipment and the propulsion equipment. And the propulsion equipment can be shared and shared, and since both of the equipment are not used at the same time, the entire power plant can be downsized.

And if this propulsion equipment is configured to be detachable from the floating offshore equipment 1B, in other words, the propulsion equipment and the voyage equipment 25, etc., tentatively move the floating offshore equipment 1B to the installation location. When using it for temporary self-propulsion, install it temporarily only during this movement, and remove it after moving to the installation location or during operation at the installation location, to other floating offshore equipment 1B If it is configured to be usable, the overall equipment cost can be reduced.

Also, by removing these propulsion equipment except when navigating, the space can be used effectively. In addition, even if the basic structure is the same floating offshore facility 1B, the type and size (capacity) of this propulsion facility may vary depending on the conditions when sailing, if the travel route to the installation location is different. It can also be changed. In addition, if a part of the propulsion equipment breaks down, it can be easily repaired or replaced.

Which of the constituent devices of the propulsion equipment and the voyage equipment 25 can be attached / detached depends on the ratio of the floating offshore equipment 1B during movement and operation, the ease of attachment / detachment in the detachable configuration portion, and the like. . For example, the propeller 21 is generally expensive because a special material and precision machining are performed, and the propeller 21 is detachably attached to the propeller rotating shaft (propulsion shaft) 21a, so that movement is not necessary. It is often removed at the time.

Furthermore, when the floating offshore facility 1B is equipped with a propulsion device for holding the position during operation, the electric power used for the propulsion device for self-propulsion is used for the position holding device. The power generation equipment 50 of the second group can be used efficiently.

As shown in FIG. 6, the floating offshore facility 1C of the third embodiment includes a temporary power generation facility (Temporary power generation facility) 70 disposed in the safe area Rs excluding the dangerous area Rd. In other words, the temporary power generation facility 70 is installed, and the power generation capacity of the

power generation facilities

40, 50, 70 as a whole can be changed.

Specifically, the temporary power generation facility 70 is installed, for example, on the upper deck 3 a of the stern part 4 (configuration in FIG. 6), on the upper deck 3 f of the bow part 8, or inside the hull of the bow part 8. . Further, the temporary power generation facility 70 may be provided before the departure of the floating offshore facility 1C, or may be additionally arranged after leaving the port.

As a result, when the required power capacity temporarily increases or in an emergency such as an unexpected generator failure, the power generation capacity can be temporarily assisted, and this can be dealt with. . For example, it is possible to flexibly cope with an operation that temporarily requires electric power, such as when navigating to a production site. In addition, when it is desired to increase the power generation capacity of the first group of power generation facilities 40 in order to increase the production amount, or by increasing the residential area 6a, the power required for the second group of power generation facilities 50 has increased. It can also handle cases.

More specifically, the power generation capacity of the temporary power generation facility 70 is configured to be 5 MW to 25 MW. Thereby, sufficient auxiliary power can be supplied by the temporary power generation facility 70.

The temporary power generation facility 70 includes a connection destination switching mechanism 82 that is electrically connected to one or both of the first group power generation facility 40 and the second group power generation facility 50. The connection destination switching mechanism 82 includes any one of the first group of power generation facilities 40 and the second group of power generation facilities 50 by parallel operation of the first group of power generation facilities 40, the second group of power generation facilities 50, and the temporary power generation facility 70. Power supply to one or both of them, or all or part of the power supply by one or both of the first group of power generation facilities 40 and the second group of power generation facilities 50 due to the operation of the temporary power generation facility 70 It is configured to switch to power supply (feedback power supply) that takes over.

In other words, as an emergency response, parallel operation with the first and second group

power generation facilities

40, 50 and feedback power feeding are performed by the temporary power generation facility 70 arranged in the safety area Rs other than the production facility area Rp. When configured so as to be able to, the following effects can be obtained.

That is, in the event of a failure in the first or second group of

power generation facilities

40, 50, or in the event of a failure or accident in the production facility 30, a part of these

power generation facilities

40, 50 is maintained. Even when an unscheduled power supply amount is required during the inspection, the power supply can be supplemented by the temporary power generation facility 70, and a sufficient power supply system can be secured. That is, by installing the temporary power generation facility 70, the power generation capacity of the first group power generation facility 40 and / or the second group power generation facility 50 can be substantially changed, and the risk can be further reduced.

Thereby, even if a part of the power generation equipment 40 (or 50) of one of the groups breaks down, the power can be supplemented by the temporary power generation equipment 70, and it is possible to flexibly cope with an emergency. In particular, when the floating offshore facility 1C navigates by increasing its power by self-propulsion, there may be a case where a large amount of power is temporarily required. Even in such a case, it is possible to respond flexibly.

In addition, the first group of power generation equipment 40 and the second group of power generation equipment 50 should not be permanently connected electrically, and should be configured to supply power directly to individual equipment in an emergency. You can also. In this case, a plurality of relatively small generators are prepared as the temporary power generation facilities 70 so that they can be installed near the

power generation facilities

40 and 50 that are necessary. In this case, since wiring and attachment / detachment are facilitated, emergency response can be performed quickly.

According to the floating offshore facilities 1A-1C of the present invention of the first to third embodiments described above, the large-scale floating offshore facilities 1A-1C

power generation facilities

40, 50 are divided into different production facilities. The first group of power generation equipment 40 for feeding power to 30 and the second group of power generation equipment 50 for feeding power to equipment other than the production equipment, and the production equipment area Rp on the upper deck 3 and this production equipment By distributing and arranging in the safety area Rs other than the service area Rp, the space for the power generation equipment in the production equipment area Rp on the upper deck 3 can be reduced, and the equipment for production as an offshore equipment. Can be increased, and the risk when a power system trouble occurs in the

power generation facilities

40 and 50 can be dispersed.

That is, even if a trouble occurs in the first group of power generation equipment 40 that is a power supply system to the production equipment 30, the second group of power generation equipment 50 causes equipment and equipment other than the production equipment, such as cargo handling equipment and residential areas. It is possible to continue to supply power to the facility 60. Further, when the propeller 21 and the propulsion motor 22 that drives the propeller 21 are provided as in the floating offshore facility 1B, the second group of power generation facilities 50 can also be used as a generator for the propulsion motor 22. It is possible to reduce the equipment cost in the case of self-propulsion using this propulsion motor 22.

Next, a method for supplying power to the floating offshore facility according to the embodiment of the present invention will be described. This floating offshore facility power supply method includes a production facility 30 to which power is supplied by the

power generation facilities

40 and 50 and facilities other than the production facility, and is used in a state of being held on the ocean. In this method, the

power generation facilities

40 and 50 supply power to the production facility 30 and are arranged in the production facility area Rp on the upper deck 3. Electric power is supplied from the power generation facility 40 to the production facility 30 and power is supplied from the second group of power generation facilities 50 arranged in the safety area Rs other than the production facility area Rp to facilities other than the production facility.

According to the power supply method of the floating offshore facility of this embodiment, the large-scale floating offshore facilities 1A to 1C of the

power generation facilities

40, 50 are distributed according to their use and distributed from the

power generation facilities

40, 50 according to their use. By supplying power, the power capacity of the power generation equipment 40 in the production equipment area Rp on the upper deck 3 can be reduced, and the installation space for the power generation equipment 40 can be reduced. Can be increased, and the risk when power system troubles occur in these

power generation facilities

40 and 50 can be dispersed.

According to the floating offshore facility and the power supply method of the floating offshore facility of the present invention, the power generation facility of the large floating offshore facility is divided according to use, and the production facility area on the upper deck and this By distributing and arranging in safety areas other than production equipment areas, the space for power generation equipment in the production equipment area on the upper deck will be reduced and the space for equipment for production as offshore equipment will be increased. Can also disperse risks when power system troubles occur in power generation facilities, so floating offshore oil and gas production storage and loading equipment (FPSO), floating storage and loading equipment (FSO), floating body Floating offshore facilities such as LNG storage facilities (FSU), liquefied storage and loading facilities (LNG-FPSO) that handle LNG, FLPG (LPG-FPSO) that handle LPG, floating storage and regasification facilities (FSRU), and Available power supply method body offshore facilities.

1A to 1C Floating offshore facilities 2 Hull 3 Upper deck 3a Stern upper deck 3f Bow upper deck 4 Stern 5 Machine room (Engine room)
6 Superstructure 6a Living area 6b Funabashi (bridge)
7 Cargo hold 8 Bow 20 Electric propulsion system (propulsion equipment: equipment other than production equipment)
21 propeller
21a Propeller rotating shaft (propulsion shaft)
22 Electric motor (propulsion motor)
23 Rudder 24 Steering machine 25 Navigation equipment 30 Production equipment 40 First group

power generation equipment

41a, 41b, 41c, 41d

Power generation equipment

50, 50A, 50B Second group

power generation equipment

51a, 51b Power generation equipment 60 Residential area equipment 70 Temporary power generation facility (Temporary power generation facility)
81 Connection Destination Change Mechanism 82 Connection Destination Switching Mechanism Rp Production Facility Area Rd Hazardous Area Rs Safety Area

Claims

In a floating offshore facility used in a state of being held on the ocean, including production facilities to which power is supplied by power generation facilities and facilities other than the production facilities,
The power generation facility supplies power to the production facility, and supplies power to a first group of power generation facilities disposed in the production facility area on the upper deck and facilities other than the production facility. And a floating offshore facility comprising a second group of power generation facilities disposed in a safety area other than the production facility area.
The power generation equipment of the first group is configured to have a connection destination changing mechanism that electrically connects the power generation equipment of the second group and the power generation equipment of the second group. And the second group of power generation facilities are switched to a power supply that replaces all or part of the power supply by the other power generation facility due to the operation of one of the power generation facilities. The floating offshore facility according to claim 1, having a configuration.
The floating offshore facility according to claim 1 or 2, wherein the power generation capacity of the second group of power generation facilities is configured to be 5 MW to 30 MW.
4. The power generation facility of the second group is composed of a plurality of power generation facilities, and the plurality of power generation facilities are separated and arranged at two or more locations. Floating offshore facilities described in 1.
A propulsion unit, a propulsion unit that drives the propulsion unit, and a voyage facility are provided, and power for operating the propulsion unit and the voyage facility is supplied from the power generation facility of the second group. The floating offshore facility according to any one of 1 to 4.
The floating offshore facility according to any one of claims 1 to 5, wherein the floating offshore facility includes a temporary power generation facility disposed in a safe area excluding a dangerous area.
Floating offshore facilities include floating offshore oil and gas production and storage facilities, floating storage and loading facilities, floating storage facilities, liquefied storage and loading facilities that handle LNG, FLPG that handles LPG, and floating storage and regas The floating offshore facility according to any one of claims 1 to 6, wherein the floating offshore facility is any one of the following facilities.
In a power supply method for a floating offshore facility used in a state of being held on the ocean, including production facilities to which power is supplied by power generation facilities and facilities other than the production facilities,
The power generation facility supplies power to the production facility, and supplies power to the production facility from a first group of power generation facilities disposed in the production facility area on the upper deck, and the production A power supply method for a floating offshore facility, characterized in that power is supplied to a facility other than the production facility from a second group of power generation facilities arranged in a safety area other than the facility area.