Underwater hydrocarbon production system

FIELD: extraction of minerals.

SUBSTANCE: group of inventions relates to underwater extraction of hydrocarbons, in particular to systems for connection of a main field facility and underwater wells. System includes a main field facility, plurality of underwater wells, connected in series by means of plurality of hydrocarbon pipelines with main field facility, plurality of underwater umbilical cables for power transmission, data transmission, hydraulic fluid and working fluid media to underwater well, underwater pipeline fluid network, connected with each underwater well, power supply network and data transmission network for transmission of DC power and data, operatively connected with each underwater well for supplying each underwater well with power supply and data transmission services. DC power supply network and data transmission network are separated from underwater pipeline network and are not intended for fluid transfer.

EFFECT: broader functionality due to possibility of transmission of electric power over a distance, considerably greater than available at present, higher flexibility of system.

6 cl, 5 dwg

 



 

Same patents:

FIELD: oil and gas industry.

SUBSTANCE: production platform (1) is suggested with potential connection of branch connection coupled to a production manifold (10) in order to ensure connectivity to the production manifold (10) of at least two production connection strips from the respective subsea wellhead equipment. The production platform is made as a retrofitted module capable to be connected to a single inner tube (11) placed in the production manifold (10). The production platform comprises a frame (2), a pipeline (3), at least one connector (4) and rails (9). The frame (2) is made so that it may be placed on a support device (12). The support device (12) passes from the production manifold (10). The pipeline (3) forms a branching ended by a connector (4) and by at least two external tubes (6).

EFFECT: connection of two production strips to the manifold and reduction of boring rig time in the well.

9 cl, 4 dwg

FIELD: construction.

SUBSTANCE: underwater structure (US) operates at depth in the range from 100 to 120 m from sea level. At the same time the US comprises a support-bearing underwater complex and a drilling complex or a production complex. The support-bearing underwater complex includes a support-bearing plate and a wellhead complex. The support-bearing plate, in its turn, comprises a wellhead block, an energy block, a residential block, and also a life support block, internal and external circular corridors, radial transitions, sectioned ballast pontoons of circular shape and propelling agents. Retention of the underwater structure in the vertical position at the specified point for the whole period of stay is provided by control of filling of ballast pontoon sections, at the same time retention in the horizontal plane is done due to operation of the propelling agents. The inner surface of the body of the drilling complex and the production complex is congruent to the external surface of the wellhead complex, and the lower surface of the body of the drilling complex and the production complex is congruent to the upper surface of the support-bearing plate.

EFFECT: increased safety, reliability and quality of performed works.

13 cl, 5 dwg

FIELD: oil and gas industry.

SUBSTANCE: platform contains supporting base of submerged type. Note that platform power unit-module is made in the form of automated nuclear electric station designed for power supply, and unit-modules are made with compressor and pump equipment, with automated control system, with diving and submerged-technical equipment that serve for primary preparation of well product for transportation to the main process platform and/or to offshore off-loading terminal for well product storage. Note that the whole platform assy is made in the form of circle and/or polygon, in the centre of which there is a wellhead module with wellheads equally spaced between themselves.

EFFECT: increase of reliability of submerged production platforms construction and operation with simultaneous provision of wells location inside the object.

8 cl, 3 dwg

FIELD: mining.

SUBSTANCE: invention relates to development of offshore deposits of hydrocarbons and is intended for technical servicing of deposits with many places of dislocation of subsea wells (SW), each of them having one or several SW. The system includes a floating vessel, which can be transferred from one place of dislocation of SW to another place of dislocation of SW and two separate systems: one system to perform operations in the place of dislocation of SW, such as power supply, data transmitting and a system of underground servicing intended for underground servicing of a certain SW, such as repair servicing and operational servicing. The operational system can provide control of SW and other subsea equipment either in the first or in the second place of dislocation of SW irrespective of the position of the vessel.

EFFECT: provision of repairs and servicing of subsea equipment or separate subsea wells.

28 cl, 5 dwg

FIELD: mining.

SUBSTANCE: invention relates to development of offshore deposits of hydrocarbons and is intended for technical servicing of deposits with many places of dislocation of subsea wells (SW), each of them having one or several SW. The system includes a floating vessel, which can be transferred from one place of dislocation of SW to another place of dislocation of SW and two separate systems: one system to perform operations in the place of dislocation of SW, such as power supply, data transmitting and a system of underground servicing intended for underground servicing of a certain SW, such as repair servicing and operational servicing. The operational system can provide control of SW and other subsea equipment either in the first or in the second place of dislocation of SW irrespective of the position of the vessel.

EFFECT: provision of repairs and servicing of subsea equipment or separate subsea wells.

28 cl, 5 dwg

FIELD: oil and gas industry.

SUBSTANCE: platform contains supporting base of submerged type. Note that platform power unit-module is made in the form of automated nuclear electric station designed for power supply, and unit-modules are made with compressor and pump equipment, with automated control system, with diving and submerged-technical equipment that serve for primary preparation of well product for transportation to the main process platform and/or to offshore off-loading terminal for well product storage. Note that the whole platform assy is made in the form of circle and/or polygon, in the centre of which there is a wellhead module with wellheads equally spaced between themselves.

EFFECT: increase of reliability of submerged production platforms construction and operation with simultaneous provision of wells location inside the object.

8 cl, 3 dwg

FIELD: construction.

SUBSTANCE: underwater structure (US) operates at depth in the range from 100 to 120 m from sea level. At the same time the US comprises a support-bearing underwater complex and a drilling complex or a production complex. The support-bearing underwater complex includes a support-bearing plate and a wellhead complex. The support-bearing plate, in its turn, comprises a wellhead block, an energy block, a residential block, and also a life support block, internal and external circular corridors, radial transitions, sectioned ballast pontoons of circular shape and propelling agents. Retention of the underwater structure in the vertical position at the specified point for the whole period of stay is provided by control of filling of ballast pontoon sections, at the same time retention in the horizontal plane is done due to operation of the propelling agents. The inner surface of the body of the drilling complex and the production complex is congruent to the external surface of the wellhead complex, and the lower surface of the body of the drilling complex and the production complex is congruent to the upper surface of the support-bearing plate.

EFFECT: increased safety, reliability and quality of performed works.

13 cl, 5 dwg

FIELD: oil and gas industry.

SUBSTANCE: production platform (1) is suggested with potential connection of branch connection coupled to a production manifold (10) in order to ensure connectivity to the production manifold (10) of at least two production connection strips from the respective subsea wellhead equipment. The production platform is made as a retrofitted module capable to be connected to a single inner tube (11) placed in the production manifold (10). The production platform comprises a frame (2), a pipeline (3), at least one connector (4) and rails (9). The frame (2) is made so that it may be placed on a support device (12). The support device (12) passes from the production manifold (10). The pipeline (3) forms a branching ended by a connector (4) and by at least two external tubes (6).

EFFECT: connection of two production strips to the manifold and reduction of boring rig time in the well.

9 cl, 4 dwg

FIELD: mining.

SUBSTANCE: invention relates to underwater hydrocarbon production, in particular to systems for connection of main field object and underwater wells. System comprises main field object, a plurality of underwater wells, connected in series by multiple hydrocarbon pipelines with main field object, underwater fluid pipeline network connected with each underwater well, power supply and data transmission network for transfer of DC power and data, operatively connected with each underwater well. Power supply network and data network are separated from underwater pipeline network of fluid medium and are not intended for movement of fluid medium. System includes at least one branch unit between main field object and distributor. Distributor is designed to reduce voltage of electric power received from branching unit, prior to direction of electric power to underwater well. Branching unit is intended to receive electric cables and data cables from main field object and direction of separate electric cables and data cables into a plurality of distributors.

EFFECT: broader functional capabilities.

9 cl, 5 dwg

FIELD: gas industry.

SUBSTANCE: group of inventions relates to underwater structures and is intended for underwater development of gas deposits and liquefaction of natural gas in water areas of Arctic Ocean, which for a long time or permanently are covered with ice fields that are hard to navigate for Arctic ice breakers prevent production and transport of borehole fluid by conventional method. Underwater system for underwater development of gas deposits and natural gas liquefaction is designed for year-round operation at depth within range of 100-120 m from sea level. Said system comprises drilling-extraction underwater structure, underwater accommodations with control center, underwater nuclear power plant, underwater plant to liquefy natural gas, underwater tank for receiving/storage of liquid nitrogen, underwater tank for receiving/storage/shipment of liquefied natural gas and underwater liquefied gas tanker. Drilling-extraction underwater structure has capacity for year-round underwater well drilling and operation with well fluid purification from mechanical impurities. Drilling-extraction underwater structure is connected to plant for natural gas liquefaction by binding flexible tube with length, providing cooling of natural gas in Arctic environment of sea to a specified value. Underwater plant to liquefy natural gas is configured for its liquefaction by cascade stepped successive cooling to condensation temperature in counterflow with liquid nitrogen and providing output of spent liquid nitrogen in exhaust flexible pipe into atmosphere and/or under ice. Underwater nuclear power plant is configured to provide electric energy via flexible floating cables to all underwater structures.

EFFECT: higher safety and quality of work in underwater development of gas deposits and underwater liquefaction of natural gas.

7 cl, 2 dwg

FIELD: extraction of minerals.

SUBSTANCE: group of inventions relates to underwater extraction of hydrocarbons, in particular to systems for connection of a main field facility and underwater wells. System includes a main field facility, plurality of underwater wells, connected in series by means of plurality of hydrocarbon pipelines with main field facility, plurality of underwater umbilical cables for power transmission, data transmission, hydraulic fluid and working fluid media to underwater well, underwater pipeline fluid network, connected with each underwater well, power supply network and data transmission network for transmission of DC power and data, operatively connected with each underwater well for supplying each underwater well with power supply and data transmission services. DC power supply network and data transmission network are separated from underwater pipeline network and are not intended for fluid transfer.

EFFECT: broader functionality due to possibility of transmission of electric power over a distance, considerably greater than available at present, higher flexibility of system.

6 cl, 5 dwg

Up!