Tunu 8

MENU PAGE 49 OIL&GAS PROJECT SUMMARY Tunu is a gas and condensate field on the outer margin of the Mahakam Delta, partly onshore in swamp areas and partially offshore in shallow waters. The purpose of the Phase 8 development was to enable Total Fina Elf to meet its production requirements in the north part of the Tunu Field in MP mode. McConnell Dowell were awarded the EPC contract for the new trunklines which comprised of 20km of 500mm, 4.7km of 600mm and 0.4km of 900mm diameter pipeline including seven horizontal directional drills. The installation of the 500mm pipeline between GTS-L platform and GTS-I platform was completed using the modified bottom tow method in which the pipeline was pulled from a lay barge moored offshore along a predetermined path using a purpose built winch barge. CHALLENGES Completing seven horizontal directional drills in difficult swampy environments on the Mahakam Delta in Indonesia was a challenge McConnell Dowell met with resounding success. The drills ranged from 550m to 1,250m in length and were for the 500mm and 600mm diameter high pressure gas pipelines of Total Fina Elf Tunu Phase 8 Development. The very soft formation of clays and silts required a specialised swamp bit to be used for pilot operations and flycutters and barrel reamers were used for pre- reaming to the required 900mm diameter. The rig was able to be moved, setup and ready for drilling in a very short period of time. The ground conditions encountered on the project were ideal for HDD and barge mounting the drill rig enabled a fast construction program. COMMUNITY/STAKEHOLDER LIAISON Early engagement and close liaison was maintained with all stakeholders including local prawn farmers and fisheries. This consultation was managed successfully without a single delay caused by community or stakeholder opposition or major issue. CLIENT PT TOTAL INDONESIA LOCATION MAHAKAM DELTA, INDONESIA CONTRACT EPC VALUE US$35M COMPLETED JULY 2002 TUNU PHASE 8 DEVELOPMENT PROJECT CAPABILITIES BUILDING CIVIL ELECTRICAL FABRICATION MAINTENANCE MARINE MECHANICAL PIPELINES RAIL ROADS & BRIDGES TUNNELLING 3 or majo 25KM OF PIPELINE COMPRESSION/MANIFOLD PLATFORM 6 NEW TRUNKLINES 7 HORIZONTAL DIRECTIONAL DRILLS SWAMP AREA PUSH PULL NEARSHORE CONVENTIONAL LAY PREVIOUS EXPERIENCE HEALTH & SAFETY QUALITY SUSTAINABILITY PROCUREMENT CONSTRUCTION PLANT & EQUIPMENT CONTACT US OFFICE LOCATIONS START CASE STUDIES INTRODUCTION ENGINEERING FABRICATION

Upload
chris-swaine
Category

Documents
view
14
download
0

Embed Size (px):

Transcript of Tunu 8

PAGE 49

OIL&GAS

PROJECT SUMMARYTunu is a gas and condensate field on the outer margin of the Mahakam Delta, partly onshore in swamp areas and partially offshore in shallow waters. The purpose of the Phase 8 development was to enable Total Fina Elf to meet its production requirements in the north part of the Tunu Field in MP mode.

McConnell Dowell were awarded the EPC contract for the new trunklines which comprised of 20km of 500mm, 4.7km of 600mm and 0.4km of 900mm diameter pipeline including seven horizontal directional drills.

The installation of the 500mm pipeline between GTS-L platform and GTS-I platform was completed using the modified bottom tow method in which the pipeline was pulled from a lay barge moored offshore along a predetermined path using a purpose built winch barge.

CHALLENGESCompleting seven horizontal directional drills in difficult swampy environments on the Mahakam Delta in Indonesia was a challenge McConnell Dowell met with resounding success. The drills ranged from 550m to 1,250m in length and were for the 500mm and 600mm diameter high pressure gas pipelines of Total Fina Elf Tunu Phase 8 Development.

The very soft formation of clays and silts required a specialised swamp bit to be used for pilot operations and flycutters and barrel reamers were used for pre-reaming to the required 900mm diameter.

The rig was able to be moved, setup and ready for drilling in a very short period of time.

The ground conditions encountered on the project were ideal for HDD and barge mounting the drill rig enabled a fast construction program.

COMMUNITY/STAKEHOLDER LIAISONEarly engagement and close liaison was maintained with all stakeholders including local prawn farmers and fisheries. This consultation was managed successfully without a single delay caused by community or stakeholder opposition or major issue.

CLIENT PT TOTAL INDONESIALOCATION MAHAKAM DELTA, INDONESIACONTRACT EPCVALUE US$35MCOMPLETED JULY 2002

TUNU PHASE 8 DEVELOPMENT PROJECT

CAPABILITIES

BUILDING

CIVIL

ELECTRICAL

FABRICATION

MAINTENANCE

MARINE

MECHANICAL

PIPELINES

RAIL