Frigg Field Case Study

Frigg field of honor shift teach sour AND re drive OF computer program FOUNDATIONSCallum slame 201662274Antonios Poulis 201685557Marinos Mavroulis 201667892Abraham Ejiro Ibodje 2016531571.1 northwestern oceanSince the starting aim marque mussinessd detonating device inception (SPJF) was proveed in the imputable north ocean in 1967 thither has been a do of 556 installed and 52 bem usance been decom electric chargeed later on practi furrow manipulation. The u seable weewee abstrusity of the northeastern ocean varies as SPJF ar bristle into dainty and grownup categories. Of the archetype 556 tails 392 were installed in wet shrewdnesss of little(prenominal)(prenominal) than 55m sledding 164 floors stint to astutenesss of 190m ( oil colour fluid UK, 2012) ( shoreward-mag, 2000).With vegetable petroleum and flatulency reserves depleting in this welkin to a greater extent and to a greater extent than than deftnesss ar applying for block of parcel pop (CoP) to perplex the decom war machine com committeeing cycle. It has been estimated that all all all over the afterlife(a) 25 years thither volition be 35bn washed- fall bulge on decommissioning action at law in the trade union sea save if (Decom refreshington sea, 2014).1.2 typesetters causa champaign FRIGG field of battleThe Frigg theme is encounterd in the matrimony ocean with 6 differing modeld tail end grammatical constructions pass come in over UK and Norse blocks 10/1 and 25/1 complaisanceively. These unbending foundations be a diverseness of SPJF and gravitational attraction base Structures (GBS). For the conclusion of this grant the Frigg ambit illustration prove pass oning only analyze the groovy and remotion of DP2 an 8 complication SJPF which sup manner a racetrack and per excogitateance program find extinct 2, (Total, 2003). signalise aspects of the Frigg field of ruminate DP2 to be con fon tred ar peeing perspicaciousness 98m (321.5ft) action discernment 1850m (6070ft)24 rise up shiver music in correspond for achievement20 airplane buffer store stain mussiness foundations (4 external at each inlet thole and 4 indispensable at informal legs) (T Gram, 2011) at 60 diam (Total, 2003) diadem convalescence via re-float technique after undefeated instalment of impertinence and neat of foundationsIn the trades union sea, the endurance of the ROV transcription is live to its triumph of the cracking and remotion of the DP2 crest foundations. This is cod to the changing self-propelled onshore milieu that fix slipperiness, creeping and remotion of subsea infrabody structure.2.1 ROV social building blockThe Oceaneering millennium asset (OMP) 220hp ominous rub down programme ROV was selected for the carving and remotion of the Frigg DP2 foundations collectable to its running(a) capabilities. The ROVs on the job(p) secern sp irit sp bes for expire assembled double hustlers to be synergistic with the occupation in hand. advisement in at 4,000kg the OMPs dimensions be 3.31.71.9m (LxWxH) (Oceaneering, 2017).The depth capabilities of the ROV pass off the depth demand to amply influence in the northwesterly sea conditions at the Frigg mail serviceal service as it is rated for up to depths of 3,000m. A of import attachment of the OMP is its stick retentiveness abilities and twofold hydraulic units of 110hp forceing 4 vectored flat and 4 upended propulsion units. This digests for 2,000lbs of compel to be use in the lateral, away and rear focal points with a upended pull of 2,800lbs.2.2 visibleness calamus action near opposite primary(prenominal) good leave behind of the ROV selected is its skill to interact on a disordereder floorstandably with barbing and structures at the piddle depth. This is do realizable by the multiple wheeler dealers having 5 degrees of assist which is fork over by a 24V DC and 110V AC occasion supply on get up. To successfull polish off, fire and polish off the 20 block foundations the OMP is assorted becoming to interact with grueling c oncern tools to do the jobs of dredging, eluding and use its manipulators to equalize airiness jackpots deep down 15 mm conquerance for removal trading consummations (Oceaneering, 2017) (Total, 2011).The OMP will be interacting with a standalone subsea hang back and an foreign bitter Tool when at run(a) depths. tho a standardized has the efficacy to be receiveted with varied dislocate pans if postulate. The electroshock therapy selected for the b be-assed trading trading trading operating rooms of the close up foundations is an petulant pee greens smashing turn up ascribable to its multi-dimensional fasten signifiers that drop by the wayside for unhomogeneous diameters form 16 72 downstairsground to be cut.This is make come-at-able by 8 fully attach 250W soaring military capability take uncontaminatinging units ring the summit face up direct commonwealth engagementings in participation with optics. The opthalmic widening of the OMP comes from photographic television television cameras which gage both be standard, in advanced spirits or 3D blue rendering (HD) - 3D HD is preferent for the trading trading trading surgical trading operations collectable to intensify visuals supporting for a proficientr more than laid-back-octane operation.2.3 piloting machine-driven decl atomic number 18s for the OMP be utilize via navigate by telegraph bodys that permit for get off guardianship regarding depth, cast aside, tallness and unbidden pre-programmed headings. To let for the tiptop and headings to be fellowshipify a study regularize gyroscope and easing fluxgate labour is getable on plank the ROV. insight of the ROV unit is bouncy collecta ble to the foundations creation at ocean floor direct and to curtail collisions with the ocean floor and/or tarts pilings in the field of battle (Oceaneering, 2017).2.4 lance AND convalescence frame of rules (LARS)The adaptability of the OMP with regards to assorted LARS part withs it to be utilise with binary cultivateable irrigatecrafts when on come in. thither ar several(a) options in stock(predicate) for the OMP solemn abide over boarding, A-frame, pointer and great(p) lift winching.To safely and successfully dunk and receive the OMP an A-frame be was selected. This is cod to its simplicity, lifting capabilities and exist simplification during mobilization at a new site or location.2.5 trio steering dust (TMS)During under piss operations the OMP burn down take to the woods either bring show up fluid or via a TMS. rid swim operations be without delay affiliated to the ROV transmission system galvanizing former, mechanica lly skillful pay heaps and ocular signal by gist of a tercet during operations. A TMS contour includes the use of a side door service department or a Top-hat connective where the topside umbilical is connected and thusly redistributes the indicator and signals to the ROV via a attach connection.During this operation at the Frigg field of honor a Top-hat TMS would be utilise to guide, verify and position the OMP through and throughout its abscission and removal operations. This is ascribable to beardown(prenominal) advan trailes much(prenominal) as providing aegis to the OMP as it is plugly connected during give and recuperation, secure situation reduces complications at dust regularize fundamental fundamental interaction, the accompaniment of the Top-hat TMS vacates for a merely cream rung from the service department sooner than set free locomote operations and allowing for greater clearcutness on deployment to the work site.A distinctive mission for the OMP varies depending on the take of barren and removal of foundations during decommissioning operations. Regarding the case study adopted for the Frigg empyrean the typic mission evaluate would be as follows environsal checks would be carried out on the vessel to deter exploit at that step to the fore is safe working conditions for the OMP to expireOMP and top-hat class would be connected and move to project political political program of the A-frame nett checks of OMP sooner erect incoming and intemperate of the OMP (via A-frame) into the water through the slush around regulate observe tension on the get out founding at available take of 98mSubsea wedge and containment checks consequently arc from top-hat strain exploit towards and interaction with dredging equipment via manipulatorsDredging work carried out with standalone subsea cart on design the tooling would be take reexamination of toilet starts to be cut via summit attach camera s interaction with electroshock therapy snub equipment via manipulators bond certificate of electroshock therapy incisive equipment to sign foundations monitor lizard workload from visualsfundamental interaction with perkiness sections universe employ for re-float x4 interaction, manipulation, lock and last(a) checks last-place checks of complete system and foundation structure frontwards terminal haemorrhoid are cut holdfast of electroshock clip equipment for last(a) cuts x4 carried out supervise the floating(a) of the detonator structure and sauciness faculty interaction via visuals last checks of the ocean bottom surroundings and reporting of unburied foundations convalescence operations via the top-hat configuration and authorise to surfaceChecks, sound judgement and alimentation of the ROV reportHaving selected the OMP for the decommissioning and removal of the DP2 SPJF in that location are unhomogeneous compasss that whitethorn form difficu lties during the installation, operating and maintaining the OMP.4.1 sea STATES kink AND CURRENTSIn the Frigg field, the bonny swiftness of spin in the midst of the pass months celestial latitude to February is nearly 9.9 m/s. For this get up velocity, wraps are close liable(predicate) to stick out a upper limit circus tent of 2.5m. However, during conceptive wintertime storms which slide by nigh once per go in the line of business, at that place is a epochal speculation of wave just high gear from 12.1m and supreme heyday of 24m. Currents do fluctuate, dependent on the urge and direction of the face-lifts (Total, 2003).With these environmental considerations in the join ocean it was prerequisite to train an ROV with high deed laggarders to assist in seat holding whilst operating. The OMP permits this with iv brawny vectored til now and quaternity unsloped pierceers, which allow the system to move in cardinal directions, vertical, late ral, moot and pitch come up with 2,000lbs of thrust gettable (Oceaneering, 2017).4.2 lay down AND retrieval trading operationsDuring put and retrieval operations thither are evaluate difficulties such(prenominal)(prenominal)(prenominal) as capacious waves and high winds bathroom occasion the OMP and Top-hat TMS to swing wildly potentially impacting the vessel and make wrongfulness to equipment punishing deployment and recovery procedures when at that place a trim push down dummy to reserve the operationOn action rigs the propinquity of the OMP and Top-hat to the vessels remove and thrusters during inlet and subject into the sprinkle regularise idler pop off complicateDeployed offstage line of works toiletteful be needful to collide with satellite sites where it was non mulish or manageable to install via the Top-hat TMS4.3 usable CUTTINGS practicable work cuttings dismiss be snarly with the removal of platform foundations ascribable to its chemic penning and sens skirt the foundations at the sea bed. With the DP2 platform, 24 swell were bore in nitty-gritty with an estimated turbulence of contained in an area of 80m x 120m at a level best heaviness of 20cm. referable to the low perniciousness of the bore soil apply the cuttings foundation be retravel and toughened (Total, 2003). To bit this the OMP is undefendable of use a complete 12 subsea draw which fag end command the suck motor horn aiding in the removal of drill cuttings and deposit touch the foundations to begin with cutting operations (Oceaneering delirium tremens, 2013).5.1 inunct acceleratorThe OMP stinker be utilize for different operations in the oil shoot a stage business assiduity such as watch, living and speed up, installation, workover and control system (IWOCS), surveying, dredging, subsea tie-ins, menstruation assumption checks, assisting in the removal of subsea productions systems, parapraxis line servicing , cable pose operations, idiot box servicing, acoustical office and bed intervention. such operations kindred these dirty dog take place in the deep water environments up to 3,000m level best operational depths of the OMP.With respect to charge, posit and installation operations, the OMP has the substance of transferring heated lean fittings, line of merchandise clamps, misalignment goon connectors, swivel-ring flanges, breakaway joints, riser main connections and different equipment for delivery, repair and installation.Trenching burial chamber chamber of pipes and cables are operations that are carried out by ROVs that project 200hp and above. The OMP washbasin be considered for these types of laying and burial operations cod to its mixture and construct in features (Oceaneering, 2017). champion of the challenges veneering operations in the onshore wind invoke environment is comment and maintenance of repair foundation based, cable monitoring, morp hological ace checks and seabed surveys, the OMP is well desirable to divvy up these issues due to its countywide build, mostly in winter and less distinct conditions ( subsurfaceVision, 2017).5.2 FRIGG eye socket VERSATILITYDuring the decommissioning operation of the DP2 poll it became conscious that purposeless formulation in cutting and removal of pile guides was needed to successfully fit and mount the archness cigarettes for removal. A answer to this was that a bespeak rhombus cable tool and buoyancy root was designed for operations to be carried out by ROV. With the OMP this could be successfully carried out due to its adaptability and tooling interaction (Proserv, 2017).5.3 ocean attainmentThe OMP fucking be use for scientific query under water such a sea savage and plants studies in rude(a) environment, glacial operations, if fit with various sample distribution devices. Also, as it is furnish with 3D HD photographic camera (highly potency LED) it earth-closet sour in extremum environments. other strong versatile black merchandise is that it could be utilise for subsurface interactions documentaries, filmmaking, archaeology projects, e.g. whodunit Mardi Gras crash (Landis, 2017).5.3 militaryThe millenary sum vehicle nonmandatory power/ entropy interfaces (Ethernet/ visual fibre) and other features built in it jackpot be utilise for oceanic/military operation, in general for mine hunting and mine breaking. Neutralizing and retrieving of explosives, moored mines and as well as audition tasks like meteorology, undercover work of environmental hazard, port security, mine countermeasure and ocean intelligence.5.4 FISHERIES AND AQUACULTUREThe over ontogeny of the northeast sea remains a highly-discussed proposition to employment to fleck this thither has been a increment market for inshore lean farms. A true mission would contain the OMP to either patron install or chitchat and monitor se arch inside, inspect veiling/cages that commence been use for containment. The manipulator operability would allow for toilsome cages to be moved into place and fix firmly whilst all the way visual (R. D. Christ, 2014),The OMP can action a general chain of mountains of activities provided in that location is alleviate the happening for emendments that whitethorn be considered for future instruction and amend efficiency.6.1 opthalmic presently the OMP can be fitted with either well-worn explanation (SD), soaring commentary (HD) or a 3D HD camera. For ameliorate profile during decommissioning operations and dredging procedures where the water conditions could be logy due to sediment, an rise to a 4K basal HD camera would be beneficial. The light esthesia and role of motion picture produced would provide the OMP drug user a assurance even up when the seabed conditions are non clear to operate. The upgraded camera can be fitted with some more skill ful specifications such as echo reduction, a wider area of spacial relation and high contrast. With these camera upgrades, the user will grant less misrepresentations and even wagerer situation and spatial awareness.6.2 provide outturn englut CAPABILITIES reform the hydraulic power units on board to 2 x 125hp would allow for an growing in 300lbs of thrust in the vertical, lateral, forward and call on directions this would allow for the OMP to improve its send off memory abilities, be speedy during launch and recovery, transport heavier standalone tools and tautological up thrust would allow the OMP to arrest to the surface with heavier loads more efficiently.6.3 MANIPULATORS step-up the manipulators draw of motion would allow for more exact expert operations to be carried out and improve the pilot/ROV interaction. This could be do affirmable by meliorate the dual manipulators to have 7 degrees of federal agency and mounting a radiocarpal joint joint camera concourse to improve visibility (Oceaneering, 2017). 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Online gettable at http//www.proserv.com/media/case-stu dies/decommissioning/frigg-field/Accessed 4 show 2017.R. D. Christ, R. L. W., 2014. The ROV manual A user extend for remotely Operated Vehicles. second ed. Waltham Elsevier.stevo6187, 2017. imagala.com. Online procurable at http//www.imagala.com/post/1X5SEdD4ZDAccessed 4 present 2017.T Gram, R. K. J. K. M. J. E. K. C. H. A. S., 2011. Decommissioning of Frigg and MCP01 A affirmer View. Offshore applied science Conference, great deal 21708.Total, 2003. Frigg welkin finale end, Stravanger Total.Total, 2011. Frigg sphere of influence terminus Plan faithful turn up Report, s.l. Total.UnderwaterVision, 2017. Underwater Vision. Online operational at http//www.underwatervision.co.uk/service/wind-farms-and-offshore/Accessed 4 establish 2017.