Project SHEET Offshore drilling island and ice barriers in Extreme weather conditions and demanding logistics

INTRODUCTION features Agip Kazakhstan North Caspian Operating Client Agip KCO Company B.V. (Agip KCO), a consortium of eight leading oil companies, is active in the northern Location Northern section of Caspian Sea section of the Caspian Sea. The gas and oil Period 2003 - 2005 reserves in this area were mapped out in 1998 and 1999. To allow for their exploitation, Boskalis Contractor Boskalis Archirodon VOF (BAVOF ) International has created an artificial island measuring 225 x 225 meters, and underwater berms, for Agip KCO. Four years later, the time is ripe for the of the drilling island and ice barriers. Once they are in place, Agip KCO can start to extract and distribute the oil reserves.

PROJECT SPECIFICATIONS Boskalis Archirodon VOF (BAVOF) specializes in the construction of marine infrastructure. The company has extensive experience with the execution of complex multidisciplinary projects, both maritime and offshore. So it is a highly suitable partner for the construction of an offshore drilling island and ice barriers. This project in the Caspian Sea involved the construction of two A corridors. One with a total length of 450 meters and 20 meters wide, and the other measuring A location map more than 550 meters. BAVOF also built Riser B Checking the sheet piling Island, measuring 550 x 90 meters. This drilling C Installing the sheet piling involved incredible precision island will be the starting point later for the D Aerial photo of the work

B

C D 01 — 2012 The information contained in this data sheet is for guidance purposes only and may be subject to changes. © Boskalis. All rights reserved. Kazakhstan andsotheyhavetobebroughtin goodsandequipmentarescarcein Spare parts, APPROACH applied totheproject. environment, stringentenvironmentalstandards for thecelebratedsturgeon.To protectthesensitive attention. TheCaspianSeaisthebreedingground There wasanotherfactorthatmeritedparticular cutting theavailablenetconstructiontimebyhalf. meter-long sheetpilinghadtobesuspended, generally meantthatworkonthe16to17 are common.W Strong windsarenotunusualandsoroughseas of thesea:mostitislessthan4metersdeep. degrees Fahrenheit).Anotherdifficultyisthedepth can riseto40degreesCentigrade(over100 impossible towork.Inthesummer, temperatures the CaspianSeainaccessibleanditisalmost From NovembertotheendofMarch,icemakes weather conditionsarefeaturesofthelocality. Large distances,shallowwatersandextreme CHALLENGES isolated offshorelocationatadepthof8meters. the mainsiteandsecondinacompletely onenearto berms; together withtwounderwater Barrier) forthedrillingislandwasalsobuilt, distribution. Themainicebarrier(theSouth pipelines takingtheoiltoshoreforsubsequent And alargevarietyof WORKFORCE MAIN EQUIPENTUSED PROJECT KEYFIGURES

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land equipment Multi-cats: 1 Accommodation vessels:3 barges:1 Survey Positioning pontoons:3 Transport barges:20 Tug boats:10 Manhours: 2,000,000 Amount ofpeople:200 G F E Extreme weather conditions andemingloistics Offshore drillingislandicebarriersKazakhstan the clientsandlocalconditions. this way, the200-strongBAVOF teammanagedtoliveupthedemandsof that theworkwentoffassmoothlypossibleandtomeetdeadline.In Despite thedifficultconditions,BAVOF possibletomakesure dideverything RESUL for thisprojectinordertocomplywiththestrictenvironmentalstandards. course andaFirstAidcourse.W afirefighting personnel followedaHUETcourse(offshorehelicoptersurvival), workingbothonshoreandoffshore.Offshore substances) foreverybody This variedfromasafetyinductioncoursetoanH2S(hazardous Safety iscrucialonaprojectofthiscaliber. BAVOF itselfsetupSHEtraining. SAFETY, HEAL shallow waters. voyage,despitetherelatively asmuchrockpossibleperreturn transport speciallyforthisprojectsothattheycould of 3,000tons)wereconverted ‘Bautino 2’and3’(allBAVOF-owned vesselswithaloadingcapacity barges‘Bautino1’, a one-hourflightfromBautinotoAtyrau.Thetransport And ontopofthat,theclientandprojectlocationwerealongwayapart: from theprojectlocation,inotherwordsavoyageoftwodaysandonenight. ofBautino,whichis280kilometers breakwaters wasdispatchedfromtheport All therockmaterialneededforconstructionofdrillingislandand bytraintakesthreetofourweeks. transport the CaspianSeaviaAstrakhan.Roadhaulagetakesabouttwoweeksand Sea,theBaltic,passingStPetersburgonitswaythroughVolgaNorth to fromEuropebybargeacrossthe kilometers. Sheetpilingwastransported Volga-Don CanaltoAstrakhanintheCaspianSea.Atotalof8,500 Gibraltar onitswaytotheMediterranean,BlackSeaandfinally from .ThesupplyroutewasbyseatheNetherlands,passing G Installing theanchorrods Tough weather conditions Installing concretemat T TH ANDTHEENVIRONMENT orking practiceswereadaptedspecifically www.boskalis.com [email protected] F +317869555 T +317869000 The 3350 AAPapendrecht PO Box43 Royal BoskalisW estminster N.V.