MESC at a Glance

Geophysics is an essential tool for

the detection and understanding

of variations in the properties of

the Earth, geological structure,

and for the identification of

potential geohazards. The understanding

of the geology and geological

processes active within an

area can have significant implications

for locating infrastructure,

for safety in its design and design

optimization, and for potential

time and cost savings associated

with its installation.

The applications of marine geophysics

are as varied as the techniques

and instruments that have

been developed for surveying the

sea floor , examples of equipment

used at geophysical surveys are:

- Multi Beam Echo sounder

- Side scan sonar

- Sub Bottom profilers

- Magnetometers

- Cable & pipeline tracking

- Pingers & Boomers

Geotechnical investigation, comprising

sampling and in situ testing, provides

ground truthing at specific locations

and is, therefore, a key input into

ground model development.

We have the capability to acquire

marine geotechnical data up to 20m

below seabed in water depths of up to

3000m using a range of equipment

including:

- Seabed penetrometers (CPTs)

- Vibrocorers

- Piston corers

- Box corers

- Clam shell grabs

- Full range of smaller

environmental grabs & trawls

We have our own in-house team of

marine geotechnical surveyors &

technicians to operate and maintain

all geotechnical sampling & coring

equipment which can be deployed

from any third party vessels.

Offshore site surveys require the positioning

of a survey platform (survey

vessel, underwater vehicle or towed

body) with a high relative accuracy.

This accuracy depends on the purpose

of the survey but lies normally

between 0.5 m and 5 m.

Examples of positioning operations

are:

- Rig Positioning

- Barge positioning

- Jacket installation

- SPM positioning

- Diving support vessel positioning

- Construction support vessel

positioning

- Underwater positioning using

USBL and LBL

- Metrology using LBL

Our professional ROV Inspection

Teams give asset owner/operators

a proven, responsive and

cost-effective underwater

inspection and integrity management

partner.

MESC experienced and professional

ROV Teams deploy

high-spec Mini-ROV technology

and tooling to inspect floating

production assets, drilling assets

and other offshore/marine vessels

and structures.

We pride ourselves on being agile,

mobile, responsive, knowledgeable

and extremely Cost-Effective.

Subsea - Oil & Gas applications:

- Subsea Structure Inspection & Work

- FPSO Rigs, Hull Inspection & Cleaning

- Hull and Vertical Structures expertise

- Inspection of Immersed Structures

Bathymetry is the study of the bed

(floor) of a waterbody, involving mapping

of features on charts to provide

information on water depth. Bathymetric

charts are typically produced

to aid navigation and inform dredging

activities, for example during maintenance

of navigational channels,

Examples of Bathymetric survey operations

are:

- Nearshore survey

- Shallow water survey

- Channels survey

- Port survey

- Site survey

Bathymetric surveys can be conducted

by using Single beam echo sounder

or Multibeam echo sounder to generate

Bathymetric charts and contours

Various methods can be used for

pipeline route allocation using survey

equipment from survey vessels or work

class ROV's.

pipeline route detection and profile

can be done using usual survey sensors

as Multibeam echo sounder, side

scan sonar and pipe trackers.

Pipelines surveys include but are not

limited to:

- Pre-lay Survey

- Post-lay Survey

- As-laid Survey

- Touch down monitoring

The ROV can carry instrumentation

to monitor the cathodic protection

given by sacrificial

anodes attached to the structures

and pipelines. Should any

pipeline be buried then a Pipe-

Tracker can be used to locate its

position. This is a sophisticated

underwater metal detector which

uses sensing coils to detect the

magnetic field changes caused

by the steel pipe.

Seismic surveying is a technique used

to explore the layers of rock below the

seabed for geologic features that indicate

the presence of oil or gas. Seismic

waves are generated from a surveying

vessel, travel down through the water

and seabed and reflect back off the

different layers of rock. This information

is used to produce maps of structures

identifying areas where gas

deposits may be found.

There are three basic types of seismic

technologies used to help explore for

oil and gas – 2D, 3D and 4D , Seismic

survey services include but not limited

to:

- Life of Field Seismic (4D)

- Ocean Bottom Seismic

- Portable Seismic Source

- Project Management

- Marine 2D Data Acquisition

Full water column oceanographic

data acquisition, including current

velocity and direction, wave

spectra, tides, conductivity, and

temperature (shallow waters to

ultra deep waters).

Meteorological stations, including

wind, temperature and visibility

Design, installation, and maintenance

of tide stations for ports,

exploration, and survey programs  

Integration of instrumentation and

sensors through buoy-based systems

or fiber networks utilizing sophisticated

data processing, web display, storage,

and dissemination software.

Conception, design, installation, and

maintenance of metocean mooring

programs for offshore resource exploration

and development, subsea and

coastal infrastructure, engineering,

and design criteria.

Service Brief

MESC offers long term onshore and

offshore operations and maintenance

of meteorological stations to record

atmospheric parameters, water levels,

tides, currents, waves using state of

the art oceanographic and meteorological

sensors.

MESC offers real-time data display

through bespoke web applications.

Data is then used by scientific communities

for modeling or by private

companies to plan for future developments.

MESC is an environmental consulting

company that is flexible and adapts to

its customer requirements, providing

nearshore and offshore integrated

solutions.

We offer integrated solutions to our

clients by performing the necessary

survey works plus all the required environmental

measurements and

assessments. MESC combines biological

knowledge and environmental

background with know-how and

proven experience on geophysical,

hydrographic and base line surveys.

Environmental solutions includes but

not limited to:

- Water sampling

- Waves monitoring

- Tidal information

- Soil sampling

- ADCP surveys

- Lab analysis

Service Brief

Focused on coastal and marine environments,

these services support

infrastructure planning, consenting

and development, environmental

protection and resource management.