RU152317U1 - INSTALLATION OF POWER SUPPLY OF OBJECTS OF THE MARINE OIL AND GAS DEPOSIT - Google Patents

Abstract

Power supply unit for offshore oil and gas field facilities (MOGM), containing a nuclear steam generator unit, consisting of several steam generation modules and located on a floating platform equipped with an anchor system and providing the possibility of its stabilization underwater or on the surface, while each steam generation module consists of a nuclear a reactor and a steam generator, characterized in that it contains an energy module configured to be installed on the MNGM surface facility and consisting of a steam-water heat exchanger and a steam turbine with an electric generator configured to be connected to the electrical distribution devices of the nuclear steam generator plant and the MNGM surface and underwater facilities, at the same time, the steam-water heat exchanger has heat exchange surfaces, branch pipes for withdrawal and supply of water circulating in the heat supply system of the MNGM surface facility, a branch pipe for the inlet of steam spent in the steam turbine of an energy o the module and the condensate outlet pipe connected by a thermally insulated pipeline to the feed water supply system to the steam generators of the steam generation modules, and all the outlet pipes of the steam generation modules are connected to a steam distributor, the outlet of which is connected by a thermally insulated steam pipe to the steam turbine inlet of the power module.

Description

The utility model relates to the field of development of oil and gas fields (MNGM) and provides the possibility of autonomous electric and heat supply of offshore oil and gas fields during surface and underwater arrangement of them.

The closest analogue of the claimed utility model is the installation of energy supply facilities of the offshore oil and gas field containing an atomic steam generator unit consisting of several steam generation modules and located on a floating platform, which is equipped with an anchor system that provides the possibility of its stabilization in underwater or surface position, with each generation module the steam consists of a nuclear reactor and a steam generator (patent RU 2399104 C2, G21D 1/00, G21C 35/44, B63B 35/44, publ. 09/10/2010).

The technical solution mentioned above has the following disadvantages: low economic efficiency due to the cooling of the exhaust steam from the steam turbine with sea water, the heat of which is not used further in the installation cycle;

the complexity of servicing a steam turbine and an electric generator, due to the fact that the steam turbine complex is under water, which requires the constant presence of a large number of service personnel on the underwater platform.

The objective of the claimed utility model is the creation of a power supply installation for the facilities of oil and gas facilities without the above disadvantages.

The technical result achieved by the utility model is as follows:

- an increase in efficiency (efficiency) due to the use of steam produced in atomic steam generator plants located under water, both for electricity production and for heat supply to MNGM facilities;

- increasing the autonomy, reliability and safety of the operation of the installation of power supply facilities MNGM, due to the placement of the energy module that generates electricity at the surface of the facility MNGM, and the nuclear steam generator unit under water, which reduces the complexity of servicing the equipment of the claimed installation and reduce the time for maintenance and repair of it equipment.

The technical result of the claimed utility model is achieved due to the fact that the power supply unit of the offshore oil and gas field (MNGM) contains an atomic steam generator unit consisting of several steam generation modules and located on a floating platform equipped with an anchor system and providing the possibility of its stabilization in underwater or surface position , in addition, each steam generation module consists of a nuclear reactor and a steam generator, in addition, the installation of power supply facilities MNGM contains an energy module installed on the surface of the MNGM and consisting of a steam-water heat exchanger and a steam turbine with an electric generator associated with the electrical distribution devices of the atomic steam generator and surface and underwater objects of the MNGM, while the steam-water heat exchanger has heat exchange surfaces, water outlet and water inlet circulating the heating system of the surface object of the MNGM, a pipe for the input of steam spent in the steam turbine of the energy module and a pipe from ode condensate coupled thermally insulated pipe with feed water system in a steam generator steam generating modules, wherein all output modules generate steam pipes connected to the steam manifold with an output connected to an input of insulated steam pipe energy module of the steam turbine.

An increase in the efficiency of the installation of energy supply of MNGM facilities is also ensured by supplying the steam-water heat exchanger with heat exchange surfaces in which the water of the heat supply system of the surface object of the MNGM circulates, which makes it possible to use the steam spent in the steam turbine of the energy module to heat the water of the heat supply system, as well as by providing heat insulation pipelines through which water circulates in the heat supply system of MNGM facilities and, therefore, minimize heat loss.

Placing an energy module consisting of a steam-water heat exchanger, a steam turbine with an electric generator on the surface platform of the MNGM facility provides an increase in the autonomy and reliability of the operation of the power supply installation of the MNGM facilities by simplifying its maintenance and improving maintainability during the surface placement of the energy module, eliminating complex underwater operations during its maintenance .

The essence of the utility model is illustrated in the drawing.

The drawing shows the installation of energy supply facilities MNGM on the example of an underwater object MNGM - equipment underwater equipment (OPO) MNGM and surface object MNGM - surface oil and gas construction (NNGS).

The power supply unit of the MNGM facilities contains an atomic steam generator 1 containing several steam generation modules, a transition compartment 2, a control unit 3 of the steam generator 1, a helipad 4, a floating platform 5 of the steam generation module, a floating platform 6 of the nuclear steam generator 1, ballast tanks 7 of the floating platform 5, ballast tanks 8 of a floating platform 6, anchor system 9, equipment for underwater equipment (OPO) 10 MNGM, surface oil and gas field structure (NNGS) 11, thermal insulation An insulated steam line 12 from the steam distributor of the distribution unit 21 to the inlet of the steam turbine of the energy module 20, an insulated condensate drain pipe 13 from the steam-water heat exchanger, an electric cable 14 for supplying electricity to the auxiliary needs of the atomic steam generator unit 1, an electric cable 15 for supplying electricity to the equipment for the underwater equipment of the MNGM , power distribution device 16 of the equipment of the underwater equipment of the MNGM, power distribution device 17 of the NISS, sys topic of heat supply 19 NNGS 11, energy module 20 with an electric generator 18, a distribution unit 21 containing a steam distributor and a condensate collector with a feed water supply system to the steam generators of the steam generation modules, the electrical distribution device 22 of the atomic steam generator installation 1, the underwater rescue apparatus 23 and the berthing facilities 24.

The energy module 20 is installed on the NISS 11 and consists of a steam-water heat exchanger and a steam turbine with an electric generator 18.

An electric generator supplies electric power to the following facilities:

- equipment of the surface object of the MNGM, i.e. at the NISS 11;

- to the underwater object of the MNGM, i.e. on OPO 10 MNGM;

- for own needs of the energy module;

- for own needs of steam generation modules.

The output of the electrical distribution device 17 of the NNGS 11 is connected via an underwater electric cable 15 to the electrical distribution device 16 of the OPO 10 MNGM, and is also connected by the electric cable 14 to the electrical distribution device 22 of the nuclear steam generator 1.

The floating platform 6 is equipped with an anchor system 9, providing the possibility of its stabilization in the underwater or surface position.

The anchor system 9 and ballast tanks 8 of the floating platform 6, provide the possibility of the ascent of the nuclear steam generator unit 1 and its operation in the above-water position.

The floating platform 5 and ballast tanks 7 provide the possibility of the emergence of steam generation modules for their replacement or repair.

To the steam distributor of the distribution unit 21 are connected the exhaust pipes of the exhaust steam of all the steam generators of the steam generation modules. The exit of the steam distributor is connected by a thermally insulated steam pipe to the input of the steam turbine of the energy module 20.

The steam-water heat exchanger of the energy module 20 has the following elements:

heat exchange surfaces in which the water of the heat supply system 19 of the surface object of the MNGM circulates;

a pipe for supplying water from the heat supply system 19;

- a pipe for draining water into the heat supply system 19;

the inlet pipe of the steam spent in the steam turbine of the energy module;

condensate drain pipe.

The steam inlet pipe of the steam-water heat exchanger is connected by a heat-insulated steam line 12 to the outlet of the steam turbine of the energy module 20. The condensate drain pipe from the steam-water heat exchanger is connected by a heat-insulated pipe 13 with a condensate collector of the distribution unit 21.

The steam line 12 and pipe 13 have a thermal insulation coating based on ceramic microspheres

Installation of energy supply facilities of the offshore oil and gas field works as follows.

In each of the steam generation modules, steam is generated in the steam generator by means of the heat energy generated in the nuclear reactor. Steam from the steam generator enters the steam distributor of the distribution unit 21.

From the outlet pipe of the steam distributor, the steam enters the steam turbine of the energy module 20 through a thermally insulated steam line 12.

The electric power generated in the electric generator 18 is supplied through the electric distribution device 17 of the energy module via an underwater electric cable 14 to the electric distribution device 22 of the atomic steam generator unit 1, and is also supplied via the underwater electric cable 15 to the electric distribution device 16 of the OPO 10 MNGM.

Electricity generated by the electric generator 18 is supplied to the electric distribution device 17 of the atomic steam generator installation and to the electric distribution devices of the surface and underwater objects of the offshore oil and gas field.

From the steam turbine of the energy module 20, the waste steam enters the steam-water heat exchanger. Water from the heat supply system 19, enters through a heat-insulated pipeline into the water supply pipe of the steam-water heat exchanger. Water passes through the heating surfaces of the steam-water heat exchanger, is heated by the spent steam and leaves the steam-water heat exchanger through the water outlet pipe. The water heated in the steam-water heat exchanger is supplied to the heat supply system 19 of the above-water facility of the MNGM. Condensate from the steam-water heat exchanger flows through line 13 to the condensate collector of the distribution unit

21 and is supplied through the feed water supply system to the steam generators of the steam generation modules.

Ballast tanks 7 provide the possibility of the ascent or immersion of the steam generation module of the atomic steam generator 1 if necessary, its rotation, as well as for maintenance and repair of equipment.

Nuclear steam generator unit 1 can operate in underwater and in the above-water position. Changing the position of the atomic steam generator unit 1 is carried out using the anchor system 9, as well as using ballast tanks 8. Under favorable conditions in the offshore field, in the absence of a storm, ice, and iceberg approach, the use of atomic steam generator unit 1 in the above-water position is provided. Under adverse weather conditions at the offshore field, it is envisaged to operate the nuclear steam generator unit 1 in an underwater position.

To ensure the safety of people working on the nuclear steam generator unit 1 in the underwater position, underwater rescue vehicles 23 are provided.

When the nuclear steam generator unit 1 is in the above-water position, it is possible to use the berthing facilities 24 and the helipad 4.

In the claimed utility model, it is proposed to use the steam generated at the nuclear steam generator plant not only for generating electricity, but also for the technological and domestic needs of the facilities for the installation of gas turbine plants. Moreover, the amount of heat required in the Arctic is equal to the amount of electricity consumed.

The claimed utility model increases the autonomy of the operation of MNGM when using an atomic steam generator on it, in comparison with the use of traditional gas turbine and

reciprocating power plants, eliminates the dependence of electricity and heat production on the availability and preparation of produced hydrocarbon feedstocks (CS) in the field for use as fuel, which increases its significance when drilling wells when the PS is absent, and also allows providing the required power almost unlimitedly and not depend on the remoteness of offshore fields from the coast, which is relevant for the example of the Shtokman gas condensate field, located 600 km from the coast.

Claims (1)

An energy supply installation for offshore oil and gas field facilities (MNGM), containing an atomic steam generator set consisting of several steam generation modules and located on a floating platform equipped with an anchor system and providing the possibility of its stabilization in the underwater or surface position, while each steam generation module consists of a nuclear reactor and steam generator, characterized in that it contains an energy module made with the possibility of installing it on the surface of the MNGM and with consisting of a steam-water heat exchanger and a steam turbine with an electric generator configured to connect to the electric distribution devices of the atomic steam generator installation and the surface and underwater objects of the MNGM, while the steam-water heat exchanger has heat exchange surfaces, pipes for the discharge and supply of water circulating in the heat supply system of the surface object of the MNGM, a pipe the inlet of steam spent in the steam turbine of the energy module and the condensate drain pipe connected by heat insulated a pipeline with a feed water supply system to the steam generators of the steam generation modules, and all the output pipes of the steam generation modules are connected to a steam distributor, the output of which is connected by a thermally insulated steam pipe to the input of the steam turbine of the energy module.

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