(TGPS Offshore)
Project
Overview
TGPS
(Turkey-Greece Natural Gas Pipeline System) Project covers Offshore and
Nearshore Surveys & Underwater Engineering Study dedicated to planning
natural gas pipeline system of about 17km for the purpose of transporting
natural gas from Asian side to European side in Marmara Region, north-west of
Turkey.
Both
landfall locations are submitted to Derinsu before site survey. Marmara Sea
crossing of pipeline/s survey corridor is designed to be 1km of width (each 500m
on right and left side of centerline) along the centerline approximately 17km.
Scope
Of Work
The scope of survey works cover marine survey activities with site
investigations including, Offshore and Nearshore surveys and some of the
meteo-oceanographic researches.
The TGPS is basically a dedicated natural gas pipeline system of about 200km for
the purpose of transporting natural gas from the existing Karacabey pigging
station located on north-west of Turkey to the Turkey-Greece border.
The
entire pipeline system mainly consists of a first land pipeline section starting
from Karacabey to a suitable landfall location on the south side of Marmara sea,
a subsea pipeline section for Marmara sea crossing with associated pigging
stations and a second land pipeline section to reach Turkey-Greece border with
its pigging and pressure reducing station.
Offshore
surveys and Nearshore surveys have completed at the same site investigation
period. Research Vessel SALVOR and sister escort boat BOTHNIA were equiped with
Derinsu Research Systems for completing the site survey.
During
the surveys,
-
Bathymetry
Study
-
Side
Scan Sonar Survey
-
Seismic
Survey
-
Subbottom
Profiling
-
Magnetometer
Survey
-
Geotechnical
Survey
-
Bottom
Lithology
-
Meteo-Oceanographic
Studies
-
Current
Metering during echosounding
-
Sea
water physical analysis
-
Meteorological
Data has recorded.
Survey area is given by
Sofregaz between two land fall locations. The underwater route is schematically
drawn with respect to Turning Points in side of the Marmara Sea. Survey Corridor
is divided into 21 longitudinal lines and 33 offshore horizontal lines.
 
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