Installation and removal method of bottom complex for performing works on shelf, and complex of equipment for implementing thereof
FIELD: construction industry.
SUBSTANCE: installation method of bottom complex for performing works on shelf involves assembly of tower erected on the ground and consisting of cone- and taper-shaped sections mounted in series on foundation base with sealing skirt embedded in bottom. Foundation base is installed with hoisting winches and ropes on water-borne vehicle and transported to installation site. Foundation is lowered with coordinated rope movement to bottom. Complex is built up with sections as to height which is more than depth of complex installed on bottom of water area. Vertical position of longitudinal axis of complex is ensured with simultaneous operation of jacks and vibrators arranged on external side along the perimetre of the base. Internal volume of tower is dried. Removal method of bottom complex involves filling of internal tower volume with water. Water-borne vehicle is submerged by means of method of ballast water into tanks. Sag of ropes is chosen with hoisting winches and they are fixed. Ballast water is pumped from tanks. Vibrators and jacks are activated simultaneously till skirt of foundation completely comes out of bottom ground. Complex is transported to new installation place. Complex of equipment includes tower to be installed on ground, and water-borne vehicle. Tower has foundation base with enlarged surface area and sealing skirt, hollow housing with cross section decreasing as to height so that upper section of housing installed on the ground is located above water level. Water-borne vehicle has two hinged housings equipped with tanks, and ballast water receiving and discharge systems.
EFFECT: providing reliable installation of complex on unprepared bottom ground, stability of complex at lateral loads with no anchors available.
10 cl, 3 dwg
The invention relates to a deep-water technology, in particular to the way the organization manned underwater tools to perform underwater engineering works on the bottom shelf.
Known methods of transportation, installation and rise to the surface of the stationary underwater manned complexes structures for long-term underwater research and work associated with multiple exit facilities in sea divers crew members (see "Underwater laboratory, Marine Encyclopedic Handbook in two volumes. Volume 2. under. Ed. Inn. - Leningrad: Sudostroenie, 1986, s, Il.).
Known systems for underwater technical operations at great depths with access divers to the bottom. So, underwater ship by the RF patent №2097262, B63G 8/00 allows the delivery of equipment and works in any weather and under the ice.
The disadvantages of these methods in their implementation should include the maintenance of scuba equipment outside hull associated with multiple short-term outputs crew members from a location in the sea in scuba equipment. With this equipment, for example, exploration is in a hostile environment under pressure and at low temperature, which leads to increased costs to ensure its operation. The depth of installation of these stations on rangiwaea features a scuba-diving equipment.
Known methods of delivery and installation at the bottom of the waters of the so-called "gravity-based platforms" (Korobkov, VA and other Underwater technology. - Leningrad: Sudostroenie, 1981. 240 C., Il. - "The technique of the ocean").
In particular, the known gravitational platform type "Doris" and "Condeep". The advantage of these types of platforms is a significant shortening of the installation (instead of months - a few days), great safety towing these massive structures with good stability, simplifying operations commissioning due to the fact that almost all of the equipment can be installed on the working deck prior to the installation.
The disadvantages of this method of installation and construction of platforms include:
- the need for careful alignment of the seabed prior to installation, and
large towing draft.
You know the all-metal device gravitational platforms, in particular, designed by the Italian firm "Tecnomar designed for drilling at a depth of up to 250 meters (see kN. Underwater technology). The platform is a steel farm, based on the bottom three tanks, which are located at the corners of the triangular base. Construction is going on shore and transported to the installation site afloat in an upright position.
However famous the I design has the above-noted disadvantages, typical gravity-based platforms; with increasing depth it is necessary to increase the dimensions of the platform of this design to ensure that counteract the effect of waves and surface currents.
The technical result of the invention is to provide a reliable installation of structures on unprepared ground floor, weight reduction and precipitation towed designs, most of its stability under lateral loads in the absence of anchors.
This result is achieved by the fact that in the proposed method of installation and removal of bottom complex to perform work on the produce shelf Assembly installed in the ground tower of solid, hollow and connected among themselves conospermeae sections, sequentially mounted on the Foundation base from cutting into the bottom of the sealing skirt. Foundation base cargo winches pulling on ropes to ensure the boat and transport it to the installation site. When installing complex agreed etching cables put the base on the bottom, a set of sequentially increasing solid sections in height, greater depth of installation, and install it on the bottom of the water area. Ensure the vertical position of the longitudinal axis of the complex joint work holding devices, size is placed on the outer side of the base, and vibrators located on the perimeter of the base, then drain the internal volume of the tower. For dismantling installed on the bottom of the complex internal volume of the tower is filled with water, the intake of ballast water in tanks prittlewell provide a floating tool, choose cargo winches slack ropes of his connection with the Foundation of the complex, fix ropes in the tensioned position. Pumping ballast water from tanks increase the buoyancy of the craft and at the same time include vibrators and jacking devices to full output skirts the base from the bottom, after which the complex is transported to a new place of installation on the floor or attract the basis rope cargo winches for boats, while sequentially removing out of the water durable casing section of the tower complex.
The tower complex form of solid, hollow and connected in lowering construction in the water sections. The internal volume of the tower is sealed from the sea water going into the bottom of the skirt. To reduce installation time at the reduced mass of the tower is used mounted on the external side of the tower vibrators. The use of jacking devices reach the vertical position of the longitudinal axis of the tower. Profiling the outer surface of the tower provide the necessary stability due to hydrostatic Yes the population when pumping water from the inner volume of the tower.
The use of jacking devices and vibrators, as well as flooding of the interior of the tower significantly reduce the stress of its isolation from the soil if necessary to reinstall. To reduce the power cable winches, providing vertical movement of the tower in the water, use the opportunity ballasting providing a surface craft.
The proposed method is implemented by the hardware to perform work on the shelf, which includes installed on the ground tower and a dedicated floating object (self-propelled or towed vehicle).
The tower is designed with a larger area of the Foundation base and cutting into the bottom sealing skirt. Hollow solid body of the tower is made with a variable and decreasing with height cross-section so that the upper section standing on the ground hull is above the water level in the waters, rugged tower teams made up of sections.
The craft contains two floating on the surface position of the body, equipped with tanks and systems for involuntary admission and discharge of ballast water. System intake and discharge pipes with necessary fittings combined with dehumidification system - fill the internal volume of the solid casing of the tower complex. Hull boats are linked with the fight hinged on the top decks in their diametral planes farms with the formation of the window, where transportation is the Foundation base of the tower, the cables associated with placed on ship cargo winches.
Rugged tower teams made up of sections, and the craft is equipped with cargo devices for a consistent set of sections on the Foundation base and dismantling. The inner surface of the hull of the towers are equipped tiers and equipment for maintenance of drilling equipment, and cargo by liftopodemnika. Outside of the Foundation base of the tower pylons at the ends of which are placed in the holding device, which is made in the form of a flat pillows, equipped with a system of feed in them, under the pressure of the working fluid. As a working body can be used fresh water and air. On the pylons additionally placed electrovibration or pneumogenerator, pipelines associated with the supply system under pressure of air or water in the holding device.
Figure 1 presents a General view of the mobile complex of technical means to perform work on the bottom shelf in the working position, figure 2 is its top view, figure 3 is a fragment of supply working fluid to the jacking devices and vibrators.
The complex contains the tower 1 with the Foundation base 2, having a larger cross-the cross of the Oia and containing cutting into the bottom sealing skirt 3. The tower has a hollow solid body 4, is made with a variable and decreasing with height cross-section, the upper section 5 is located above the water level of the water.
Providing a floating amount (self-propelled or towed vehicle) contains at least two floating on the surface position of the body 6, equipped with tanks 7 and system 8 compulsory admission or evacuation of these ballast water. These systems are not shown in figure 1 pipes with necessary fittings combined with a system of 9 draining - filling of the internal volume of the durable housing 4 tower 1 complex.
Section 6 vessels interconnected hinged to the upper decks in their diametral planes farms 10 so as to form a window in which during transportation is the Foundation base 2 tower 1, the cables 11 associated with placed on ship cargo winches 12 (figure 2).
Rugged 4 tower 1 may be made of composite sections 13, and the craft is equipped with cargo devices 14 (figure 2) - in the simplest case the taps.
In one embodiment, the device on the outer perimeter of the base 2 is placed pylons 15, the ends of which are mounted jacking device 16.
Each jacking device 16 may be made in the form of a flat inflatable cushion 17, the light is Anna through remotely controlled manipulator 19 (3) 18 pipe distribution device 20, which valve 21 can be connected to a pressurized water line and valve 22 to high pressure air.
On the pylons 15 place electrovibration 23. When the locking hydro or pneumovirinae switchgear 20 complement the required number of manipulators 24 supply of the working fluid (water or air) to the vibrators 23.
When using a mobile complex to perform, for example, exploration using the drilling rig on the inner surface of the hull 4 tower mounted tiers 25 with the necessary equipment and install passenger lift 26.
Mobile hardware is as follows. Before transport complex of the Foundation base 2 tower 1 cargo winches 12 via cables 11 is tightened to the craft to ensure minimal rainfall during transport.
After delivery of the mobile complex to place of installation, tower 1 ground vehicle escalivada at anchor (not shown in figure 2). Etching cables 11 with cargo winches 12 tower is lowered to the bottom, increasing the height of the sections 13, which are used cargo device 14.
After the initial cutting of the skirt 3 are starting to pump out water from the interior volume of the durable housing 4 tower 1, the using system 8 buildings 6 boats and watching the vertical longitudinal axis of the tower 1. When the inclination of the tower in any direction in the holding device 16 this side when open the respective arms 19 and valve 21 distribution device 20 to supply water under pressure and, if necessary, include vibrators on the pylons of the opposite side.
Vertical position of the tower to expedite the landing of the Foundation base 2 on the ground include all vibrators.
After complete drainage of the internal volume of the durable housing 4 tower 1, using layers 25 and lipopolymer 26, it is possible Stripping of soil and installation of equipment for exploration, for which the cargo through the open upper edge 5 (closing his hatch closures and their devices are not shown) serves cargo devices 14.
Disassembly of the complex carry out when performing basic operations in reverse order: freight devices 14 dismantled exploration equipment lift on the craft using his system 8 and when opened (not shown) the kingstons flood fill the inner volume of the durable housing 4 tower 1 with water until its upper edge 5.
The craft prittlewell, filling tanks 7 buildings 6 through 8 force-feed them to the ballast water. Cargo winches 12 pick up the slack of the cables 11, after which it is rigidly fixed.
An inflatable cushion 17 donkr is the shaft of the device 16 serves the high pressure air, at the same time including all the vibrators and is evacuated from the water systems 8 of the tanks 6 7 buildings than provide pulling the skirt 3 of the Foundation base 2 from the ground.
If necessary, the process protopine and ascent buildings 6 repeat until the full output of the skirt 3 of the soil.
Cargo winches 12 via cables 11 tower 1 is lifted by the amount necessary to move the mobile complex to a new point of its installation on the ground. The upper part of the tower 1 is not shown braces insure from her involuntary tilting during transport.
Autonomy boats, as well as a set of prescribed devices, systems and mechanisms are achieved rapid installation and dismantling of the mobile complex that will significantly reduce its operating costs. In addition, the introduction of the jacking devices are provided with a reliable installation of the complex on an unprepared site of a bottom having a slope in the given constraints, and resistance to currents and waves.
1. How to install flush complex to perform work on the shelf, including the Assembly installed in the ground tower of solid, hollow and connected among themselves conospermeae sections, sequentially mounted on the Foundation base from cutting into the bottom of the sealing skirt, namely, that of Fund the elemental base cargo winches pulling on ropes to ensure the boat and transport it to the installation site, when installing complex agreed etching cables put the base on the bottom, a set of sequentially increasing solid sections in height, greater depth of installation, and install it on the bottom of the water area, ensure the vertical position of the longitudinal axis of the complex working together with a smaller height skirts the working stroke of jacking devices, placed on the outer side of the base, and vibrators located on the perimeter of the base, then drain the internal volume of the tower.
2. Disassembling is installed on the bottom of the complex, in which the internal volume of the tower is filled with water, the intake of ballast water in tanks prittlewell provide a floating tool, choose cargo winches slack ropes of his connection with the Foundation of the complex, fix ropes in the tensioned position, the pumping of ballast water from tanks increase the buoyancy of the craft and at the same time include vibrators and jacking devices to full output skirts the base from the bottom, after which the complex is transported to a new place of installation on the floor or attract the basis rope cargo winches for boats, while sequentially removing out of the water durable casing section of the tower complex.
3. The complex of technical means to perform work on the shelf, on the expectation set on the ground tower and a dedicated floating object (self-propelled or towed vehicle), this tower has a larger base base with cutting into the bottom sealing skirt and the hollow durable case, made with a variable and decreasing with height cross-section so that the upper section standing on the ground hull is above the water level in the water area, and the craft contains two floating on the surface position of the body, equipped with tanks and systems for involuntary admission and discharge of ballast water system intake and discharge pipes with necessary fittings combined with dehumidification system - fill the internal volume of the solid casing of the tower complex, hull boats interconnected hinged to the upper decks in their diametral planes farms with the formation of the window during transportation Foundation is the base of the tower, the cables associated with placed on ship cargo winches.
4. The complex according to claim 3, characterized in that the solid body of the tower teams made up of sections, and the craft is equipped with cargo devices for a consistent set of sections on the Foundation base and dismantling.
5. The complex according to claim 3, characterized in that the inner surface of the hull of the towers are equipped tiers and equipment for maintenance of the drilling rig, as well as cargo-passenger liftopodemnika.
6. The complex according to claim 3, characterized in that the outside of the Foundation base of the tower pylons at the ends of which are placed jacking device.
7. The complex according to claim 6, characterized in that the holding device in the form of flat pillows, equipped with a system of feed in them, under the pressure of the working fluid.
8. The complex according to claim 7, characterized in that the working medium can be used fresh water and air.
9. The complex according to claim 6, characterized in that the additional pylons placed electrovibration.
10. The complex according to claim 6 or 7, characterized in that on the pylons placed pneumogenerator, pipelines associated with the supply system under pressure of air or water in the holding device.
SUBSTANCE: system for stabilisation of sea platform mounted of gravitation foundation and anchored at sea bottom consists of multitude of sets of upper blocking elements installed on keel at lower part of platform, of great number of caissons installed at sea bottom, of great number of removable insertions each installed in each of caissons and of set of lower blocking elements in each insertion. Each set of the lower blocking elements is designed to engage with one of sets of the upper blocking elements by means of block system, when the keel is set above caissons. Insertions correspond to a tight attached to the keel cementing material pumped into insertions through the keel. The system stabilises the platform relative to forces of lateral shear and also facilitates easy removal of the platform off the caissons with insertions attached to the keel by applying upper lifting force. Further the platform can be transported and mounted of the second set of caissons arranged at the second site of sea bottom.
EFFECT: group of inventions facilitating mounting of platform ensuring good resistance to lateral shear forces and eliminating difficult and expensive operations for installation of shear skirts.
19 cl, 9 dwg
SUBSTANCE: device for anchoring floating structures incorporates mooring bar with ends furnished with the appliance to turn the aforesaid rod about its axis of rotation. At that the rod free end is provided with a sleeve letting the chains or cable to pass there through. The anchor chain passed through one of the aforesaid sleeves is fastened at one end faces of the said floating structure. Besides that, to up the structure stability, the proposed device can be furnished with links connecting the free ends of both mooring rods to the structure in question.
EFFECT: anchoring system causing no floating structure trim difference and providing for stable positioning with minor drift, reduced distance between anchor and floating structure.
11 cl, 15 dwg
FIELD: ship building.
SUBSTANCE: invention relates to ship building, particularly to marine transport facilities for transportation of oil, diesel fuel, kerosene, gasoline etc. Underwater tanker features a submarine hull with necessary compartments and tanks, flexible vessels for fluid cargoes. Said hull has a hollow tight vertical rudder terminating in a float, constantly above water on waterline. Around said vertical rudder, above water line, a wing system is arranged to develop additional lift force for tanker with wings in underwater position. Rudder lower part accommodates ice-cutter operating in tanker rise to surface position.
EFFECT: higher fire safety and protection of oil spillage.
FIELD: oil-and-gas industry.
SUBSTANCE: floating platform for sea wells boring and production in Arctic conditions contains boring and production equipment, including drill stem, water separating casing string, lifting pipes and pump bars, at that the mentioned above tube and bar strings during an operation process equipped with a floating elements on their external surface, made as filled with gas nitrogen or inertial gas solid plates of welded detachable balloons. The platform equipped with an ice breaker for ice pressure protection and anchored to the bottom via anchors with cables, on which balloons fixed. In the casing water separation string installed location detectors, at its bottom part there is a window for connection with hole clearance, which during the boring covered with a pipe with a balance, hanged with a balloon cables on the platform. The external surfaces of the sea casing water separation string, boring pipes, lifting pipes, pump bars and balloons have a water protection cover, and can be made of steel or aluminium alloys, or ceramic metal or polymers.
EFFECT: invention provides production and boring equipment safety operation due to loads from casing string and drill stem, also pump bars and lifting pipes weight decreasing.
6 cl, 6 dwg
SUBSTANCE: invention is related to the field of sea transportation of heavy outsised cargo. Marine cargo vessel has two rigidly connected bodies, cable weight-lifting equipment, ballast system and pneumatic fenders arranged on vessel bodies. Vessel bodies are arranged in the form of pontoons, which are tightly separated by strong partitions into compartments and connected to each other with the help of support platform. Platform is installed on at least four cylindrical supports arranged on pontoons. Supports are arranged in the form of system of telescopic cylinders, which are connected by pipelines with discharge hydraulic system installed in vessel. Supports are arranged with the possibility of both simultaneous displacement of all telescopic cylinders and their displacement relative to each other. Ballast system comprises tight compartments of vessel body pontoons equipped with sea inlets. Vessel is equipped with propelling-steering complex, power plant, is equipped with sensor of object position relative to soil, clinometre, trim metre, tracking system and control station arranged on support platform.
EFFECT: increased safety and reliability of process of lifting and loading of sunk outsised vessel, and also provides for cargo detachment from soil that sucked it down.
6 cl, 3 dwg
SUBSTANCE: proposed device comprises housing with working medium circulation channel and working medium blower arranged therein. Suction and discharge holes of aforesaid channel are arranged opposite each other on housing convex surface to allow working medium to flow around it. Aforesaid channel consists of straightening parts arranged behind suction end ahead of discharge end that feature rectangular cross section and pass into those parts which are located ahead and behind of blower, respectively. Said straightening parts feature annular cross sections.
EFFECT: increased lift.
4 cl, 6 dwg
SUBSTANCE: polar station is represented with cylindrical double-storied structure provided with two chimneys. The polar station is fixed to the location by freezing to the lower part of ice cake ensuring possibility of people and machinery lifting. The polar station contains rooms where group of 18-20 individuals can comfortably live for a long period of time and machinery can be placed. The polar station is delivered to the location independently by means of electric reverse motors. Power is supplied to the station by single-phase petroleum or diesel electric plant.
EFFECT: improved working and relaxing conditions for polar explorers.
4 cl, 1 dwg
SUBSTANCE: invention is related to sea platforms for survey of underwater oil deposits development. Sea platform of sparring type, having supporting deck and floating structure of upper body, having lower end and floating lower mooring module, which is detachably connected to lower end of upper body structure. Mooring module includes multiple mooring ropes, which are fixed on sea bottom and are adapted for detachable connection of mooring module with structure of upper body. Mooring module may be connected to lower end of upper body structure by means of multiple connection ropes, which are detachably fixed between mooring module and structure of upper body.
EFFECT: simplified disconnection of floating body structure from floating mooring module for its movement.
20 cl, 16 dwg
SUBSTANCE: invention relates to water crafts and aims at expanding operating performances of tanks and armored personnel carriers. Water craft comprises two water-permeable onboard pontoons, fixed on armored vehicles by means of front and rear fasteners. It comprises also wing to create a wing to create lifting force from ingoing water flow and to direct it to under armored vehicle rear is arranged between pontoons ahead of vehicle and fixed on its inner sides. Water craft incorporates also stern inserts. Aforesaid wing can be installed in various positions with respect to height and angle of attack. Sharp stem pontoon comprises tank and smooth executed ship contours. Pontoon stern features L-like widening along inner side. Flat bottom features smooth transition to wedge-like uprise towards stem and stern. Outer side bilge is rounded off. Pontoon stern has to accommodate water propeller and rudder-stabiliser. Note that water craft is furnished with emergency suspension to push off if stern fastener gets broken.
EFFECT: expanded performances.
9 cl, 18 dwg
SUBSTANCE: invention is related to field of construction and operation of marine shipment piers intended for provision of contact-less mooring of tankers in sea and transshipment of hydrocarbons onto them. Method for unloading of hydrocarbons consists in the fact in process of performance of operation of hydrocarbons unloading, operative control is carried out by turn of unloading boom (5), which is realised depending on value of tanker (2) motion relative to boom (5) point with continuous measurement of tanker (2) displacement value relative to boom point (5), and value of torque on rotary support device (4) to provide for boom point (5) location, directly above tanker (2), and also depending on value of torque on rotary support device (4), created by tension of mooring rope (11) by tanker (2), with displacement of the latter in horizontal plane. Complex for unloading and transportation of hydrocarbons is equipped with station of mooring-loading operations (13) control, located on shipment pier (1), system of automatic control of mooring-loading operations (16) in process of tanker approaching, mooring and holding in process of hydrocarbons unloading, and also facilities for control (17) of tanker position relative to mentioned pier and its unloading boom; facilities for force control (25) in mooring rope, facilities for control of tension force (26) in hose (6) of hydrocarbons unloading; facilities for control of load torque (27) on rotary support device (4), and also facilities (28) for provision of automatic emergency shutdown of hydrocarbons, moreover, elements of automatic control system facilities (16) are installed both on shipment pier (1) and on tanker.
EFFECT: improved reliability and safety of operation of "pier-tanker" complex.
6 cl, 4 dwg
SUBSTANCE: proposed boat has flow passage passing through the boar hull. The latter accommodates motor and storage battery, motor control units and propeller screw arranged at least partially, in aforesaid flow passage. Note here that the storage battery are arranged in waterproof casing to be in heat conducting contact with the casing in certain sections. Aforesaid motor represents an inner-rotor motor. Stator is in heat conducting contact, via heat conducting assembly, with the motor receiving housing. Note here that aforesaid receiving housing, partially coupled with heat conducting assembly, consists of heat conducting material and is partially located in aforesaid flow passage.
EFFECT: higher efficiency.
19 cl, 2 dwg
SUBSTANCE: floating helicopter take-off, landing and mooring complex has pontoon hull with top deck and helideck with railing and stairway. Top deck accommodates superstructure with helideck arranged on its top. Anchoring means represent at least three mooring anchors, primarily, stationary mooring bitts mounted on water area bottom and arranged along mooring equipment. Links are pivoted to aforesaid mooring bitts to couple with floating complex hull, the pivots having at least two degrees of freedom. Links of the extreme bitts and center bitts are pivoted together, the pivot having degree of freedom in horizontal plane to form triangular frame. Frame links and third independent link are articulated with mooring bitts via pivots allowing two degrees of freedom in horizontal and vertical planes around the axis parallel to complex hull. Hull upper deck accommodates devices intended for docking low and average deadweight ships, appliances for towing mooring complex and control station for helicopter take-off and landing ships mooring.
EFFECT: higher survivability.
13 cl, 4 dwg
FIELD: shipbuilding; marine structures and underwater systems for single-leg mooring and servicing of ships, mainly tankers.
SUBSTANCE: proposed ship is provided with aft guide member for pipe line made in form of bearing surface secured on load-bearing member, on transom and deck of aft extremity embracing it by bearing surface. Underwater system includes structure secured on sea bottom and made in form of hollow hull with bottom, cover and bulkheads. Hull is provided with guard secured on bottom and provided with screen made from under-bottom fins. This system is assembled by means of ship from which hull of underwater system is lowered to ground base at simultaneous lowering of hose-mooring line by aft guide member followed by connection of bitter end of hose-mooring line.
EFFECT: enhanced efficiency, stability and reliability of system in the course of operation.
16 cl, 13 dwg