Method of developing hydrocarbon deposits of arctic shelf and technical solutions for implementation of method

FIELD: mining.

SUBSTANCE: method comprises use of marine technological complex comprising an offshore platform, subsea satellites and coastal technological base interconnected by technological communications. The drilling process is resupplied with robotic means of oil spill response at all possible stages of an emergency process. The wellbore fluid is pumped to the onshore processing facilities made in the form of a group of interconnected underground tanks. When pumping the wellbore fluid the energy of terrastatic pressure is used, if necessary, using the booster compressor station. Disposal of oil-field water is carried out by the method of geological purification by pumping into the absorbing deep ground, and only in case of critical terrastatic pressure drop is heated and used as liquid washing oil from the rocks of the productive formation. All the technological units of marine technological complex are supplied with electricity from the power unit of a nuclear reactor. The objects of the coastal technological base are electrically connected to the power unit of the nuclear reactor by means of the power cable.

EFFECT: increased efficiency and safety of development of hydrocarbon deposits of the Arctic shelf.

2 cl

 

The invention relates to the oil and gas industry, in particular to methods of extraction and processing of hydrocarbon fluid extracted from wells drilled on the Arctic shelf.

General scientific and technical level of work for the development of hydrocarbon reserves located on the Arctic shelf, includes the completion of drilling with drilling platforms of different types of buoyancy [Types of offshore drilling platforms [Electronic resource]- access Mode http://rig-s.ru/rigs - accessed 20.12.2012], including the use of drilling and production technology add-on deck platforms, supports, platforms or underwater compartments. When this is extracted from wells wireline fluid already on the deck of the platform is separated into gas and oil fraction is separated from the produced water is sent through pipelines to the mainland disposal facilities or collect in the tank and as they are filled shipped in tankers [Offshore drilling platform, the patent of the Russian Federation 2312185. An offshore drilling platform. Patent No. 2382141, publ. 20.02.2010], [Marine hydraulic structures on the continental shelf. Simakov, G.V., PHD Shines, VA Smelov and other Leningrad: Izd-vo Shipbuilding, 1989]. For example, production platforms of the Gulf of Mexico to onshore oil and gas are pumped by separate 257 km of pipelines. About the problem of recycling separated from the hydrocarbon component reservoir water decide dumping at sea after filtering (Offshore platform, patent No. 2288320, 2383683), conveying through separate pipelines to shore "home recycling or pumped into a producing formation to displace residual oil from low-productivity reservoirs (oil extraction Method, patent 2162516, IPC E21B 43/16).

The disadvantage of such solutions is Maritime pollution or flooding an oil-bearing formation that leads to a significant increase in the circulation volume of the reservoir fluid composition retrievable downhole fluid and unproductive expenditure of energy required for pumping.

Known methods of construction of deepwater oil and gas structures with the aid of remotely operated underwater structures example fields of Garoupe (Brazil) and in the Gulf of Mexico (offshore oil and gas fields CS Huseynov, VK Ivanets, D.V. Ivanets. M.: Izd. "Oil and gas state oil and gas University. I.M. Gubkin, 2003, S, 365, 367-368).

Known proposals for the organization of underwater-ice drilling on the Arctic shelf using nuclear-powered cruisers or icebreakers type "Ivan Papanin", converted into a drill ship [Century Larin. "Underwater drilling complex with a nuclear power plant for the development of oil and gas fields of the Arctic Mor is th Russia". Review of "Bellona" [Electronic version]: access Mode: http://www.bellona.ru/filearchive/fil_Bellona_Wolking_Paper - accessed 30.11.2012]. It was supposed to supply subsea drilling system power cable from the set on the source. As an energy source was assumed to use two nuclear power plants. One floating nuclear power plant with a capacity of 300 MW (PAES-300), the second submarine nuclear power plant with a capacity of 105 MW.

Experts argue that such projects are extremely dangerous, and the cost of implementation of such projects may not be recouped by the value of the extracted oil.

There is a method of underwater exploration of mineral deposits, mainly of liquid and gas, including the construction of technological systems in a wide range of external conditions and soil characteristics of the seabed. In the regeneration of the Arctic technological complex mining construct the Central and peripheral offshore platforms and onshore technological base that connect to the main pipelines. The base of each offshore platform made of a stationary module, which is installed on the bottom support plate and rigidly connected with the ground by means of a tension anchor connections. The height of the stationary m is the module of the marine platform is chosen from the condition of non-contact passing of the ice cover and icebergs. Using at least one removable module, which has an alternate coupling with the stationary modules and which operate in an emergent platform with ballast tanks and equipment to ensure the drilling, construction, commissioning and repairs of wells, and at least one removable module is made with a compressor station, ensuring the specified pressure in the main pipeline [Method of construction of the Arctic technological complex, patent No. 2288994 [Electronic resource]Mode of access: www.findpatent.ru/patent/228/2288994/html - accessed 30.01.2013].

The disadvantage of this method is the need for complex and expensive periodic disconnection and removal in a safe and protected from ice and icebergs area of the upper movable module with temporary stop operation of the offshore platform and the corresponding economic losses.

The most perfect technical solution for the perfection of the technological complex add-ons and integrated systems management and security we recognized the Deepwater Horizon semi-submersible oil platform ultra-deepwater drilling with a dynamic positioning system, built in 2001, the South Korean shipbuilding company Hyndai Heavy Industries (http://ru.wikipedia.org/wiki/Deepwater_Horizon).

The disadvantages of the platform is the dependence of the energy supply process modules from the supply of diesel power units, the absence or inadequacy of technical means to deal with possible emergencies. During the construction of platforms of this class are not taken into account the specifics of the operation under Arctic conditions, in particular there is no requirement for cold-resistance of chemicals and metal used for the manufacture of technological equipment, there is no ldozata platform, and there is no protection of the equipment from salt corrosion and no heating system pipelines.

Known multi-purpose semi-submersible type Moss CS-50 MK/11 with a free deck, designed by Norwegian engineering company Moss Maritime As licensed to manufacture these platforms. The unit is a self-propelled floating structure catamaran base type with two pontoons and six stabilizing columns supporting the upper hull and superstructure. This universal platform, the deck of which upgraded the drilling module and mini-plants for production and processing of oil produced at the Vyborg shipbuilding plant on the order of "Gazflot" for the Shtokman gas field [Murmansk. "P is pout semi-submersible platform for the Shtokman", [Electronic resource]Mode of access: http://murmansk.russiaregionpress.ru/ - accessed 30.11.2012].

On the Prirazlomnaya oil production is expected to maintain reservoir pressure by re-injection of produced water, supplemented by a certain number of ballast and sea water (it is planned to produce formation water more 5000,0 tonnes/year when the water injection is more 9000,0 tonnes/year), when this system is used in the preparation of the slurry suspension and inject it into the reservoir.

The lack of analogue is the lack of modern technical solutions for trouble-free technologies for deep-sea drilling, and the fallacy of applied method of produced water disposal injection into the reservoir until the exhaustion of the possibilities of using reservoir pressure. This erroneous reception inevitably leads to flooding of the productive formation and fold increase in the treated formation fluid through undue increase in the proportion of moisture in the composition of the downhole fluid. Method of flooding the productive formation and leaching residues of oil wash waters is applicable only in the final stages of development of oil and gas fields in the falling production.

The energy module is the world's first offshore ice-resistant fixed platform "Prirazlomnaya", registered in the Ship register of Russian is coy Federation, designed for drilling and workover vertical, inclined and horizontal wells, consists of the main azotobacteraceae setup (STU) (three azotobacteraceae type LM2500) of electric power 28 MW each, placed with all auxiliary systems in teplozvukoizolyatsionnykh containers that are designed for operation on the open deck. On the exhaust pipes of the three TG-equipped units utilizing exhaust heat (waste heat boilers thermal capacity of 25 MW each), designed to generate heat in the system. [Paper on the feasibility study THEO-project "Prirazlomnaya". [Electronic resource]Mode of access: http:// www.shelf-neft.gazprom.ru/images/materials/%.pdf - accessed 30.11.2012].

Drilling platform Prirazlomnaya platform is not ready for operation on the Pechora sea shelf because of the danger of environmental pollution, as stated by the representatives of the world wildlife Fund (WWF) and Greenpeace at the conference Alopecia in Naryan-Mar (http://neftegaz.ru/news/view/104796).

Technical experts and international environmental organizations believe that the achieved technological level of development of hydrocarbon resources of the Arctic shelf is not enough environmentally friendly, which led to mass protests, administrative bans and suspensions exploration the work on the Arctic coast of Russia for "Gazprom", for the company Britisch Petroleum in the sea of Baffin Bay (Canada), for Shell in Alaska and for Cairn Energy off the coast of Greenland (http://savetharctic.org). The experts believe that it is inappropriate to play on platforms technological process of processing of borehole fluid, similar to the one adopted in the mainland ["Expert", No. 41(823) online@expert.ru]. It is believed that this problem is related to the complexity of space technologies. [A. Sakharov. "Prirazlomnaya" drifting into the unknown", [Electronic resource]- Mode of access: http://www.bclass.ru/ekonomika/prirazlomnaya-dreyfuet-v-neizvestnost - date treatment 23.12.2012].

This did not address the problem of energy supply onshore technological base. For its solution is proposed to replace the onshore gas turbine plant, obviously unable to meet the requirements of the WFD 39-1.13-008-2000 (requirements of ecological safety in the operation of power plants offshore platforms) especially on emissions of nitrogen oxides, powerful floating nuclear power plant, for example, a 300 mW for field development of "Prirazlomnaya". Currently at the initial stage of implementing the project for construction of a small floating NPP KLT-40S for the closed administrative territorial formation guilotine (Kamchatka Peninsula). It is planned electrical capacity of 77 MW, and the total project cost is estimated B10,2 billion rubles in prices of 2007.

Thus, it is generally accepted that the main source of electricity for the operation of offshore platforms and onshore technological base in terms of the sparsely populated areas of the Arctic coast should be a nuclear power plant, completed in surface performance as floating platforms, eliminating excessive air pollution by exhaust gas turbo and diesel plants, energy supply process on a typical drilling and production platforms.

Known technical solution for using energy units of an offshore drilling platform in the form of an automated nuclear power plant performed in a submerged position with the possibility of lowering and location directly on the seabed [patent No. 2383683 "Way of offshore deepwater oil and gas fields", publ. 10.03.2010]. In particular, the method involves the construction of a number of fixed offshore platforms, subsea bottom of the complexes, infield subsea and pipelines, tanks for storage of production wells and shipping facilities, with some platforms perform in an underwater version with fixed to the bottom of the jacket, the top dimension of the feature below the water level to the size of the largest dimension of the passage for the water part of the iceberg, moreover, at least one of the platforms perform in losexitos performance, and support units of the platforms in the underwater performance to perform block-modules serving to accommodate personnel in underwater air chambers designed to implement periodic maintenance of equipment, and the unit energy platform to perform automated nuclear power plant, designed for energy supply technology of underwater platforms, while the unit with automated nuclear power plant performed in the underwater performance with lowering and location directly on the seabed; the block-modules technology platforms do with separation plants, compressor and pumping equipment, with an automated control system and with diving and underwater engineering equipment, which are designed for primary treatment of production wells for transportation to a Central processing platform and / or to an offshore loading berth with storage capacity of production wells [the Way of offshore deepwater oil and gas fields. Patent No. 2383683. [Electronic resource]. Mode of access: http://partkom.com/patent/ru2383683. - 28.01.2013 date of access].

The disadvantage of this technology is economic decisions are technical difficulty operation of subsea equipment, excessive infield and trunk pipelines, increasing environmental danger in emergency situations, as well as the danger of manipulation by moving from flooded into the bottom position of power units with automated nuclear power plant. In addition, in the method-analogue there are no technical solutions for emergency integrated technical solutions, the absence of which was one of the factors that led to the stop of the Arctic, namely the lack of development of technology of safety measures during the drilling operation led to man-made disaster in the Gulf of Mexico, the lack of energy resources to ensure the needs of infrastructure units onshore technological base receiving the extracted oil.

The prototype of the proposed us a comprehensive technical solutions for trouble-free way of development of the Arctic shelf in the known sources we have not identified.

The closest analogue power unit platform we took the installation of gas pipeline transportation (patent for useful model No. 82290 F17D 1/04, publ. 20.04.2009. B. I. No. 11, author Icesnow VP). The unit has a nuclear reactor, a steam turbine, a generator for generating electrical energy, the refrigerant vapor and a pump for pumping in the water in the chamber of a nuclear reactor, which form a closed loop receiving superheated steam to rotate a steam turbine, which transmits torque to the compressor and gas generator to produce electrical energy.

The purpose of the proposed technical solution is the development of the method is environmentally safe development of hydrocarbon deposits on the Arctic shelf using complex new technical solutions for the prevention of pollution of water and air basins in Arctic conditions, with minimal opportunities for recovery.

The stated objective is achieved in that in the method development of hydrocarbon fields on the Arctic shelf, including the completion of drilling, a division of the downhole fluid at facilities operating platform, the accumulation of oil and gas in reservoirs and pumping them through the pipelines to the onshore processing facilities database or in tankers, disposal of produced water by injection into productive reservoirs, according to the invention the drilling process upgraded robotic means liquidation of emergency oil spill at all possible stages in the development of emergency process; ecological neutralization products purging of wells extending from a drilling or after overhaul, perform the method of thermal neutralization in recovery atmosphere; while the downhole fluid is pumped to the objects of the coastal technological base, using the energy reservoir pressure, and only when it is critical reduction in use of booster compressor station; separating well fluids produced to the onshore processing database using a linked group of underground tanks; disposal of produced water produced by the method of geological purification by injection into absorbing the underground aquifers that are not connected with productive hydrocarbon reservoir or potable aquifers, and only when a critical drop in reservoir pressure is heated and used as a liquid vypivayu oil from the rocks of the formation; with engines, ensuring the functioning units of the platform, energoobespechivayuschih from the nuclear reactor; and power supply facilities of the coastal technological base to produce cable placed along the mainline, from the power unit of the nuclear reactor, located on the platform, and for heating the fluid transported through the main pipeline, use excess heat from the condenser steam cooling system of the nuclear reactor.

For the implementation of the proposed method using Maritime technological idea is to, for conducting drilling and production on the continental shelf the high seas and containing marine platform, underwater satellites and onshore technological base, interconnected technological communication and the sea platform equipped with drilling equipment, installations separation downhole fluid, the storage capacities of the produced natural gas and oil installations for pumping of consumers via separate pipelines for gas and oil with heaters and a special injection wells, filtration units and pumps discharge into the reservoir, reservoir fluid, to supply offshore platforms, including propulsion and positioning platforms are equipped with gas turbine and diesel power plants and containers storage of fuels, according to the invention freeboard deck superstructure platform made in the form of drilling, process, power modules and functional blocks, with integrated system management and security equipped with means of monitoring the technical condition of production equipment and have satellite redundancy dynamic positioning computer platform via the navigation system "GLONASS"; and system technical monitoringagent remote duplication with coastal structures able to respond to emergency situations; moreover, the integrated system management and security have the technical means of liquidation of emergency situations; however, in the integrated process control system drilling embedded algorithms emergency use of the devices charge neutralization of static electricity flowing stream as an adequate way to prevent explosive combustion flowing jet to rescue rig, as well as the introduction of homing on the mouth of the fountain locking device that uses the kinetic energy of the flowing stream, mobile device thermal separation of the damaged section of the underwater part of the casing and the sealing device of the underwater part of the mouth of emergency wells; these stages of the proposed method aims to avoid the development of environmental disasters by forming the temporary path of removal of the downhole fluid in surface of the vessel; thus the process building platform is equipped with a sludge placed in the cavity of one of the pillars of the platform and related motor vehicle with a device disintegration of drill cuttings and device ecological neutralization products of purge wells using the method of thermal neutralization of corrosive products in a reducing Atmos the ore; moreover, the device neutralize the gaseous products of purge wells reported with flaring equipment and geographically outside of the upper deck of the platform; and all process units of the marine technological complex of electroaspect from the power unit of the nuclear reactor; and a basis can be adopted NPP KLT 40S with a capacity of 25 to 30 MW, with a mass of about 320 tons, a modular design is placed on the upper deck of marine platform or in one of its supports in protobalanus unit rig with capacity of 400 tons, and the objects of the coastal technological base electrically connected with the power unit of the nuclear reactor power cable laid along the trunk of the pipeline; the pipeline through which well fluid is pumped to the onshore processing base with site preparation, consisting of a booster compressor station, installation of heating fluid and the camera run in a pipeline cleaning pig or diagnostic shell; a booster compressor station, transporting the fluid through pipelines, made in the form of steam turbines using superheated steam cooling system of the nuclear reactor, which transmits the rotational torque of the blower, and the blower used in isout at least two pairs of spaced main pumps and two heaters; the installation of the heating fluid transported on the main pipeline, connected by pipelines with superheated steam condenser of the cooling system of the nuclear reactor; coastal technological base is equipped with a set of connected underground tanks, made a plan and acting as separator downhole fluid, the storage of gas, oil and formation fluids; and underground storage tank equipped with means for pumping produced water and produced fluid into the injection well disposal of produced water; however, the emptying of the gas storage is carried out by pumping in gas pipelines or by compression and shipment in tankers liquefied gas; thus emptying the storage of oil carried out by pumping in the trunk the oil or oil tanker fleet.

Device-Converter charges of static electricity, which contains a grounded annular gaps, interconnected pneumatically movable mechanism for moving along the jet, in the original position are arranged around the casing and have quickly reveal the body, controlled remotely or from a remote control rig winch. The principle of operation of the Converter disclosed in the author's certificate of the USSR No. 1106029 "Way is tralization charges of static electricity" (bul. No. 28, publ. 30.07.84).

Device - temporary closing element made in the form of a conical housing with axial and radial channels and cutters-tabs on its outer surface, and the device is provided with a propulsion device, transferring the kinetic energy of the jet in rotary and in back-and-forth that provides samudavanija gate at the mouth of the flowing stream. The principle of operation of the device disclosed in A.S. No. 1137801, No. 1205604 and No. 1327608 "Device for overlapping open flowing well".

Device for thermal separation of the damaged casing consists of two half rings mounted them thermal charges, and has a shut-off element, remotely connecting ring on the outer surface of the column, the management of the pointing device to the desired segment of the underwater section of the pipe is carried out with the remote control conductor device, equipped with a rangefinder. The principle of the device disclosed in the patent No. 2441134 "Method overlap openly gushing deepwater oil and gas wells and device for its implementation".

Device for collection and discharge of well fluid from an underwater device wellhead sealing presents a cylindrical hollow body with gateways joining pipes discharge of fluid is in the tanker collection and tubing in the device solutions preventing hydrate formation, and an additional gateway for the introduction of instruments, ensuring the sealing of the mouth of the damaged well, while in the lower part of the cylindrical hollow body of the device has means for fixing it preserved after the accident, the elements of the wellhead. The principle of the device disclosed in the patent No. 2431032 "Method of conservation of the mouth of emergency gushing deepwater oil and gas wells and device for its implementation". The use of this device eliminates the possibility of further development of ecological disaster.

All four devices required to implement the method, should be part of emergency equipment drilling rig.

Fire alarm system declared a marine platform having a tilt-up tower placed on it by means of foam and powder suppress fires, characterized in that it is equipped with a device creating a water curtain with a minimum thickness of ten millimeters and a height of not less than ten metres, are located in zones of approaches to the nuclear reactor, to tanks storing flammable substances and along the corridor to evacuate the personnel platform to the helipad; in the rig at a height of not less than 20 meters from the floor of the drilling table posted by means of feed water jets, sposobnost circular water curtain, blocking the spread of flow of infrared radiation in the event of ignition flowing gas stream; emergency diesel generator running constantly in standby mode, interconnected with the pump sea water emergency lines.

Thus, the salvation of the drilling rig from the explosive destruction according to the claimed method consists in immediate automatic or manual switching on with remote control winch in operation of the device, neutralizing the charges of static electricity jets, and the introduction to dielectrically plot of the jet self-locking device.

The claimed technical solution disposal of drill cuttings produced at the facility ultrasonic disintegration thermal neutralization of organic contaminants in the device type tubular furnace, with ecological neutralization products purging of wells extending from a drilling or after overhaul, carried out using the method of thermal neutralization in a reducing atmosphere on the basis of application No. 4289939/26 (124178), and the sludge collector and the collection of drilling wastewater is placed in one of the supporting pillars of the platform, and the installation of sludge disposal combined with flaring equipment and outside of the upper deck is latform.

At the end of the process of cleaning the bottom of the borehole from the drilling fluid and the process of research production wells have been drilled, the wellbore fluid flow is directed through the host of the heating fluid in the main pipeline to the onshore processing base for trade processing fluid while pumping downhole fluid is performed with the use of installation of gas transportation through pipelines (Unit of gas transportation through trunk pipelines, the patent for useful model No. 82290, F17D 1/00); and the device is functionally interconnected with the nuclear reactor and has a steam turbine to drive a compressor fluid cooler vapor and a pump for forcing water into the chamber of a nuclear reactor, forming a vicious cycle of getting superheated steam that is used to rotate a steam turbine, which transmits the rotational torque of the blower, and the blower using at least two pairs of spaced main pumps and two heaters; however, a cooler pair placed in one of the support columns and transfers excess heat to the intermediate coolant, such as glycol circulating on the principle of a heat pump in the heat exchanger unit heater fluid.

According to the claimed method field processing fluid is produced in the separators located on the platform, inevitably combined with the energy loss of reservoir pressure fluid and with the necessity of using a pump units, and in the interest of the coastal technological base, made in the form of groups of connected underground reservoirs formed by special means in layers not related to underground drinking water resources, salt formations, water-soluble structures and does not contain hydrocarbons, with large capacity capable of performing the functions of separators, storage of gas, oil and formation fluids; the emptying of the gas storage produced by pumping in gas pipelines or by compression and shipment in tankers or liquefied gas pipelines; disposal of oil produced by pumping from the temporary underground storage in trunk pipelines or tankers; and the disposal of produced water from underground tanks produced by its injection into absorbing subsoil for the so-called geological purification, and in critical decline in reservoir pressure of the productive formation is separated from the oil and solids produced fluid is heated and used as a liquid vypivayu oil from the pores of the rocks of the productive formation.

Thus, the inventive method the development of the hydrocarbon is s reserves on the Arctic shelf and technical solutions for its implementation allow to upgrade the technological processes of drilling and development of subsea fields, to eliminate or prevent the main factors of pollution of the natural environment zone of the Arctic shelf in the area of development of hydrocarbon deposits, which will remove environmental restrictions on development of hydrocarbon reserves in the Arctic.

The analysis of the level of technology has allowed to establish that the applicant is not detected similar, characterized by signs, identical to all the essential features of the claimed invention, therefore the proposed solution meets the criterion of "novelty". A comparison of the important characteristics of the developed device with the characteristics of the known solutions, it is believed that the proposed solution meets the criterion of "inventive step" and "industrial applicability".

1. The way of the development of hydrocarbon fields on the Arctic shelf, including the completion of drilling, the drilling process is upgraded to use robotic tools liquidation of emergency oil spill at all possible stages in the development of emergency process; ecological neutralization products purging of wells extending from a drilling or after overhaul, carried out using the method of thermal neutralization in a reducing atmosphere; while the well is hydrated fluid is pumped to the onshore processing facilities, using the energy reservoir pressure, and only when it is critical reduction in use of booster compressor station; and the division of well fluid is produced at the facilities of the coastal technological base, using a set of connected underground tanks; disposal of produced water produced by the method of geological purification by injection into absorbing subsurface horizons, and only when a critical drop in reservoir pressure is heated and used as a liquid vypivayu oil from the rocks of the formation; with engines, ensuring the functioning units of the platform, electroaspect from the power unit of the nuclear reactor; the supply of objects coastal technological base to produce the cable is placed along the mainline from the power unit of the nuclear reactor, located on the platform, and for heating the fluid transported through the main pipeline, use excess heat from the condenser steam cooling system of the nuclear reactor.

2. Marine technological complex for conducting drilling and production on the continental shelf, containing marine platform, underwater satellites and onshore technological base, interconnected process of communication is through publications, when bathing platform fitted with drilling equipment with robotic tools phased elimination of possible accidents, including neutralizer charges of static electricity flowing streams, homing on the mouth of the fountain and samoudalyayushcheisya shutoff device that uses the kinetic energy of the flowing stream, the mobile unit thermal separation of the damaged section of the underwater part of the casing and the sealing device of the underwater part of the mouth of emergency wells; however, the process building platform is equipped with a sludge placed in the cavity of one of the pillars of the platform and related motor vehicle with a device disintegration of drill cuttings and device ecological neutralization products of purge wells using the method of thermal neutralization of corrosive products in the recovery atmosphere; and a device for neutralizing the gaseous products of purge wells reported with flaring equipment and geographically outside of the upper deck of the platform; and all process units of the marine technological complex of electroaspect from the power unit of the nuclear reactor; and the objects of the coastal technological base electrically connected with Sylow the m-unit nuclear reactor for power cable, laid along the mainline; and the main product pipeline, through which well fluid is pumped to the onshore processing base with site preparation, consisting of a booster compressor station, installation of heating and camera start cleaning pig or diagnostic shell; a booster compressor station, transporting the fluid through pipelines, made in the form of steam turbines using superheated steam cooling system of the nuclear reactor, which transmits the rotational torque of the blower, and the blower using at least two pairs of spaced main pumps and two heaters; installation of heating fluid transported on the main pipeline connected pipe with superheated steam condenser of the cooling system of the nuclear reactor; coastal technological base is made in the form of a group of interconnected underground tanks acting as separator, storage of gas, oil and formation fluids; and underground storage tank equipped with means for pumping produced water and produced fluid into the injection well disposal of produced water; and emptying gas storage is carried out by pumping into the main pipeline is either by compression and shipment in tankers liquefied gas; while emptying the storage of oil is carried out by its transfer to trunk pipelines or oil tanker fleet.



 

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4 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: transport.

SUBSTANCE: invention relates to oil production in arctic waters, particularly, to ship for use therein. Proposed ship is available in two versions. In compliance with first version, ship can drill via drill water separation string extending from sea bottom well to turret arranged aboard the ship. Said drill water separation string can be detached from the ship located under its main line. At turret separation from the ship its bottom part submerges along water separation column to occupy equilibrium position whereat its surrounds at least partially a part of drill water separation column. In compliance with second version, proposed ship for drilling oil and/or gas production wells can be connected with at least one water separation column connected with turret coupled with ship of drill water separation column extending through the turret connected with the ship. Two lengthwise boards extend between ship fore and aft with ice belt made at, at least 50% of their length, the angle a of 45-80 degrees between ship hull and horizontal line.

EFFECT: lower load at anchoring and maneuvering devices, improved conditions of operation in arctic waters.

5 cl, 18 dwg

FIELD: oil and gas industry.

SUBSTANCE: from water surface up to near-bottom methane hydrate deposit tube with diameter from 0.01 m up to 1 m is taken down with methane collector at upper butt end. In near-bottom deposit at lower butt ends of this tube pulp is made containing suspension of solid particles of methane hydrate in ambient water with size from 10-6 m up to 0.01 m and weight content of methane from 0.01% up to 10%. At the beginning forces flow of pulp is created at lower butt end of the tube in order to initiate a self-maintained process. In methane collector liquid water and gaseous methane are divided. Then water is drained and methane is collected.

EFFECT: improving effectiveness of the method due to decrease of power supply from outside.

7 cl

FIELD: transport.

SUBSTANCE: proposed platform comprises at least one hollow submersible element with at least one opening in the hull and system to feed working gas into said submersible element and to bleed it therefrom. Said hollow submersible element has at least one lug while platform is equipped with at least one floating element with at least one lug and at least one guide rod fitted in lugs of floating element and hollow submersible element.

EFFECT: perfected performances.

2 cl, 4 dwg

FIELD: transport.

SUBSTANCE: invention relates to ship building, particularly, to underwater extraction of fluids or gases. Proposed device consists of floating structure, for example, ship equipped with one-point mooring anchor system. Said system is composed of turret articulated at vertical well extending through floating structure hull anchored at sea bottom to accommodate pipelines to feed fluid to floating structure equipment. Mooring anchor system comprises device to guide turret into said well and axial and radial bearing assemblies.

EFFECT: higher reliability.

23 cl, 10 dwg

FIELD: oil-and-gas industry.

SUBSTANCE: invention relates to deep water drilling oil and gas platform designed for operation at arctic shelf. Semi-submersible catamaran-type drilling platform is arranged at two pontoons, platform hull being supported by stabiliser columns and tensioned vertical mooring, with computer-aided dynamic positioning with the help of underwater propulsors. Surface deck superstructures are composed of drilling, processing, power production and functional modules. Integrated control and safety systems are equipped with production equipment conditions monitoring means and emergency elimination means to actuate by remote means at well fluid flowing the device of static electricity charges elimination at drilling platform.

EFFECT: higher survivability of drilling platform at well fluid flowing.

5 cl

FIELD: transport.

SUBSTANCE: method of drilling rig movement by means of transport hovership system includes movement over shallow waters and pulling floating drilling rig on air-cushion on slightly sloping shore. For movement over shallow waters delta anchors installed on ground using transport hovership equipment. To bring floating drilling rig on slightly sloping shore a bundle of three screw anchors is used which are screwed into ground by drilling rig located on deck of transport hovership. These anchors are joined with platform with roller block by adjustable rods. Pull winches and roller blocks are used on floating drilling rig to exit to shore. Roller block on anchor bundle platform and in floating drilling rig together with pull winch form tackle which permits to use winches with lower propulsive force for floating drilling rig pulling on anchors.

EFFECT: lower energy consumption during floating drilling rig movement over shallow waters and its pulling out to solid base with insignificant slope.

3 dwg

FIELD: transport.

SUBSTANCE: proposed device for equalisation of anchor ropes or chains tension contains two or more crossheads frame adjacent ends of which are connected by anchor ropes or chains with ends of corresponding double-armed lever, and the central part of the latter and the second ends of two utmost crossheads, as well as casings of crosshead upper blocks are connected by anchor ropes or chains with floating ice-proof platform. The casings of crosshead lower blocks are connected by anchor ropes or chains with anchors of this platform located at sea bed. All blocks of each crosshead are made movable and seized by equalising rope or chain the ends of which are fixed on crosshead frame ends which crosshead is provided with guides for block casings, the latter are placed in these guides with possibility to provide absence of their contact with other parts of crosshead metal structure during this device operation.

EFFECT: higher carrying capacity of floating ice-proof platform anchoring system, increase in its reliability, lower weight of device for equalisation of anchor ropes or chains tension.

3 cl, 6 dwg

FIELD: power industry.

SUBSTANCE: inventions relate to the field of electric energy supply of stationary underwater objects under conditions of freezing seas. To provide electric energy to consumers, floating power unit and receiving-transmitting device are transported to the area of electric energy consumption. Then, it is connected via the power electric cable with consumers and with power unit. Power unit is installed in the surface condition by means of anchor lines with deadline anchors with the possibility of submersion to the depth inaccessible to ices by filling the tanks of main ballast and singling of anchor lines with small positive buoyancy, which provides an opportunity of emergency upfloating, and before installing it on the bottom, supports are lowered and negative buoyancy is given to floating power unit, taking water ballast into special tank. Power unit is serviced by means of icebreaking supply vessel and submersible vehicles based on it. Complex includes icebreaking supply vessel with underwater vehicles, underwater buoy catcher, receiving-transmitting device, as well as floating power unit with high-current connector, tanks of main ballast, special tank, anchor lines with dead anchors, supports to be installed on the bottom, and splash boards for landing of submersible vehicles.

EFFECT: high efficiency, reliability of method and operational characteristics of complex are achieved.

4 cl, 5 dwg

FIELD: transport.

SUBSTANCE: invention relates to shipbuilding and concerns protection of marine ice-resistant platform hulls against external ice impact. Marine ice-resistant platform hull has reinforced, predominantly vertical, ice sheathing with stiffening set and is provided with rigid elements with triangle cross-section installed on sheathing surface and placed on its surface with creation of multiturn spiral which has generatrix inclination angle to horizon of 1070 degrees and spiral pitch not exceeding 1/3 of maximum ice thickness in the area of platform operation. In this system, rigid elements are installed so that horizontal plane determining upper end of spiral is above platform design waterline, and horizontal plane determining lower end of spiral is under platform design waterline where distance in height between planes of upper and lower ends of spiral is not less than 1/2 of ice thickness in the area of platform operation.

EFFECT: lower ice loads on platform hull.

1 dwg

FIELD: transport.

SUBSTANCE: marine ice-resistant process platform comprises overwater part with horizontal areas and process equipment installed on them, underwater part made as water displacing hull, anchor holding system allowing platform to turn relative to vertical axis, ballast tanks located in water displacing hull. The ballast tanks are located throughout the length of water displacing hull. Overwater part is made as fore and after towers where the upper part of towers in ice waterline region is made as ice-breaking cone facing by its narrow part down, and the lower part - for instance in the form of cone facing by its narrow part up. Distance from sea level during operation in ice conditions to upper part of water displacing hull is greater than maximum possible draught of ice formations. Axis of anchor holding system is located in the region of fore tower.

EFFECT: lowering load on hull and anchor holding system.

2 dwg

FIELD: oil and gas industry.

SUBSTANCE: invention is related to facilities of the continental shelf development. An offshore floating platform contains an undersea displacement module, a support subsea module with rigid support columns and binders, and straining ties fixed at seabed anchors. The support columns and binders can be detached from the undersea module in order to escape quickly from an ice-hazardous area and to return back to the abandoned place. The subsea module is made of individual sealed pontoons interconnected by rigid ties capable of limiting relative motion. The support columns of the subsea module are equipped with mechanisms for connection to pontoons of the undersea module and for interconnection of the modules.

EFFECT: improved reliability of the modules coupling/decoupling, simplified ballasting process.

6 cl, 5 dwg

Floating platform // 2518779

FIELD: transport.

SUBSTANCE: floating platform contains connected by at least one fixing element at least two floating elements each one of which consist of two side faces with at least one vertical projection on each of them with at least one vertical recess on each of them matching vertical projection. Vertical projection is made with narrowed portion changing into widened towards periphery portion to form supporting pad. Vertical recess features narrowed portion changing over into part widened towards the centre to from resting pad. On one of side faces at both sides of vertical projection there are flanges being supporting for corresponding fixing element. On the second side face at both sides of vertical projection there are two projections: one is at one side of this vertical projection and at least enveloping at least from above the corresponding fixing element, and the other is at other side of this vertical projection and at least supporting for corresponding fixing element. These two projections are parts of mating sockets of corresponding fixing elements.

EFFECT: higher reliability, enhanced operational functionality due to increased displacement and bearing capacity of platform.

3 cl, 5 dwg

FIELD: shipbuilding; manufacture of mobile research complexes.

SUBSTANCE: proposed complex is made in form of ship with small waterplane area having upper and lower hulls interconnected by means of telescopic columns for disconnection and autonomous motion of these hulls. Lower hull is submersible vehicle and upper hull is amphibian. Both hulls are provided with greenhouses and power units for generation of energy for motion of complex, domestic and technological purposes, as well as for growing vegetables, sea products and production of distilling water by motion of spheres with plant containers located spirally on their surfaces, thus ensuring generation of electric power. In addition to vegetation tubes with plants growing chains are provided where sea products are contained for distilling sea water by change in pressure and level of illumination and growing chains for growing fish and preparation of nutrient solution for plants. Lower hull is provided with plankton trawls for delivery of plankton for greenhouse and power plants of lower and upper hulls for growing fish and sea products. Amphibian supplies fresh air to submersible vehicle through its collector; it is also used for transportation of sections for erection of scientific research station. Provision is made for delivery of light to submersible vehicle through lenses, light conduits and structural sections and light conduits of collector of vehicle.

EFFECT: environment control.

4 cl, 22 dwg

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