Survey & Geophysical Services

Geophysical | Geotechnical | Hydrographic | Metrology

Comprehensive Survey Solutions for Offshore Operations
From Seabed Mapping to Precision Dimensional Control

Survey Services Overview

MPL delivers comprehensive survey services across all water depths and field conditions, from initial site investigations through installation support, asset integrity monitoring, and decommissioning surveys.

Geophysical Surveys

Multi-beam echo sounder (MBES) surveys
Side scan sonar surveys
Sub-bottom profiler surveys
Shallow water surveys
Deep water bathymetry
Seabed mapping & characterization
Route & corridor surveys
Obstruction & debris surveys

Hydrographic Surveys

Bathymetric surveys
Pre-installation surveys
As-laid surveys
Post-installation surveys
Pipeline tracking surveys
Burial depth verification
Seabed feature mapping
Environmental baseline surveys

Metrology & Positioning

Subsea metrology surveys
Dimensional control surveys
USBL positioning services
Marker buoy positioning
Well marking operations
Jumper metrology
Vessel dimensional control
High-accuracy positioning (HAP)

Inspection Surveys

Pipeline inspection surveys
Span & freespan surveys
Seabed stability surveys
Scour & erosion surveys
Mattress & rock dump surveys
Subsea structure surveys
Asset integrity surveys
Decommissioning surveys

Recent Survey Projects

TotalEnergies - Egina/Akpo OIMR Support

Egina Field - Marker Buoy & PGB Operations (2023)

2023

Egina Field

Completed

Marker buoy positioning services
Top-hole positioning surveys
Spud marker buoys installation
Permanent Guide Base (PGB) installation
Wellhead positioning support
High-accuracy positioning (HAP)
Survey data processing & reporting

Akpo Field - Shallow Water MBES Survey (2019)

2019

Akpo Field

Shallow Water

Multi-beam echo sounder survey
Shallow water bathymetry
Seabed mapping & characterization
MBES hang-off beam engineering
Survey equipment deployment
Data processing & analysis
Survey report & deliverables

Egina/Akpo - Metrology Operations (2018-2020)

Ongoing

1,500m WD

5 metrology operations completed
Subsea equipment positioning
Dimensional control surveys
Installation support surveys
As-laid documentation
Accuracy verification

SNEPCo - Bonga Life of Field Support (Yearly Operations)

Well Marking Operations

Yearly

Bonga Field

1,000-1,200m WD

37 well markings completed
Subsea tree location marking
High-accuracy positioning
ROV-assisted marking operations
Position verification surveys
Database updates & maintenance
Annual verification surveys

Jumper Metrology Surveys

Ongoing

48 Operations

Jumper dimensional surveys
Hub center measurements
Connection offset calculation
Pre-installation metrology
Post-installation verification
3D coordinate measurements
Tolerance verification

Vessel Dimensional Control

Vessel positioning surveys
Dimensional control support
Installation vessel surveys
Equipment positioning verification
Real-time positioning support
Dynamic positioning monitoring
Accuracy verification

Pipeline Tracking Surveys

Pipeline route surveys
As-laid survey documentation
Burial depth verification
Span & freespan surveys
Pipeline integrity surveys
Annual inspection surveys
Comparative surveys

Comprehensive Survey Operations

Agbami Field Survey Support (2009-Present)

Survey Operations Delivered

Field surveys supporting OIMR campaigns
Pre-installation route surveys
As-laid pipeline surveys
Subsea equipment positioning
Metrology for installations
Annual inspection surveys
Environmental studies support
Debris & obstruction surveys

Multi-Field Survey Experience

Survey Support Across Fields

Bonga: 38+ metrology, 37 well markings
Egina/Akpo: 5+ metrology operations
Agbami: Field surveys & inspections
Anyala-Madu: SURF installation surveys
Oyo: Expansion project surveys
ABO: Phase 3 survey support
Meji: Shallow water surveys

Water Depth Capabilities

Shallow water: 5-55m depth
Mid-water: 200-500m depth
Deep water: 1,000-1,200m depth
Ultra-deep: 1,400-1,500m depth
All survey types across depths
Weather-resilient operations
24/7 survey capabilities

Geophysical Survey Services

Advanced geophysical surveys provide critical seabed information for project planning, route selection, and
installation support.

Multi-Beam Echo Sounder (MBES)

High-resolution bathymetry
Seabed surface mapping
Digital terrain models (DTM)
Water column imaging
Coverage up to full swath width
Real-time quality control
Backscatter data acquisition
3D visualization products

Side Scan Sonar (SSS)

High-resolution seabed imaging
Pipeline route surveys
Obstruction detection
Debris field mapping
Seabed feature identification
Archaeological surveys
Asset location surveys
Wide area coverage

Sub-Bottom Profiler (SBP)

Sub-seabed imaging
Shallow geological assessment
Sediment layer identification
Shallow gas detection
Burial feasibility assessment
Foundation investigation support
Geohazard identification
Penetration depth assessment

Magnetometer Surveys

Ferrous object detection
UXO (unexploded ordnance) surveys
Pipeline & cable detection
Buried object identification
Clearance verification
Archaeological surveys
Route clearance surveys
Seabed preparation verification
Target positioning surveys
Obstruction identification & mapping
Seabed feature surveys
Geohazard assessment
Environmental baseline surveys
Installation planning support

During Installation Surveys

Real-time positioning support
Landing guidance surveys
As-laid surveys & documentation
Positioning verification
Progress tracking surveys
Quality control surveys
Installation monitoring
Continuous survey support

Post-Installation Surveys

As-built survey documentation
Final positioning verification
Burial depth verification
Span & freespan surveys
Seabed stability assessment
Connection verification surveys
Completion documentation
Handover survey packages

Touch-Down Monitoring (TDM)

Real-time pipeline laying monitoring
Touch-down position tracking
Lay rate monitoring
Pipeline configuration monitoring
Seabed interaction monitoring
Overbend monitoring
Quality assurance support
Installation optimization

Pipeline & Asset Inspection Surveys

Regular inspection surveys ensure ongoing asset integrity and support maintenance planning.

Pipeline Inspection

Pipeline tracking surveys
Route verification surveys
Burial depth verification
Exposure & span surveys
Scour & erosion monitoring
Coating condition surveys
Crossing verification
Comparative surveys (baseline vs current)

Span & Freespan Surveys

Span location & documentation
Span length measurement
Clearance height measurement
Seabed profile surveys
VIV (vortex-induced vibration) assessment
Remediation planning support
Post-remediation verification
Annual monitoring surveys

Subsea Structure Surveys

Manifold positioning surveys
PLEM location verification
Xmas tree surveys
Foundation surveys
Settlement monitoring
Seabed stability surveys
Protection system surveys
Integrity assessment support

Protection System Surveys

Rock dump surveys
Mattress placement verification
Grout bag surveys
Protection effectiveness assessment
Settlement & displacement monitoring
Remediation requirements
Post-installation verification

Well Marking & Positioning Services

Specialized services for wellhead marking, positioning, and permanent guide base installation.

Well Marking Operations

37+ well markings completed (Bonga)
Subsea wellhead location marking
High-accuracy positioning surveys
ROV-deployed marker systems
Position verification & documentation
Database integration & updates
Annual verification surveys
GIS mapping integration

Marker Buoy Operations

Marker buoy positioning (Egina 2023)
Spud marker buoy installation
Top-hole positioning surveys
Buoy deployment support
Position verification surveys
Real-time positioning monitoring
Documentation & reporting

Permanent Guide Base (PGB)

PGB positioning surveys (Egina 2023)
Pre-installation positioning
Installation support surveys
Post-installation verification
Wellhead alignment verification
Dimensional control surveys
As-installed documentation

Data Processing & Deliverables

Comprehensive data processing and reporting services ensure survey data is delivered in formats suitable for
engineering, operations, and regulatory requirements.

Data Processing

Bathymetric data processing
Side scan sonar mosaic generation
Sub-bottom profiler interpretation
Positioning data processing
Tide & sound velocity corrections
Quality control & validation
Data integration & fusion
Accuracy assessment & reporting

3D Modeling & Visualization

Digital terrain models (DTM)
3D seabed surface models
Pipeline route 3D models
Subsea structure modeling
Virtual reality (VR) products
Fly-through animations
Volume calculations
Comparative analysis models

CAD & GIS Deliverables

AutoCAD survey drawings
MicroStation deliverables
GIS database integration
Shapefile generation
KML/KMZ files for Google Earth
Asset register updates
Coordinate system transformations
Client-specific formats

Reports & Documentation

Comprehensive survey reports
Executive summaries
Technical methodology reports
Data quality reports
As-laid survey reports
Inspection survey reports
Photographic documentation
Certificate of completion

Survey Equipment & Technology

MPL utilizes state-of-the-art survey equipment and technology to deliver high-quality, accurate survey data.

Survey Sensors

Multi-beam echo sounders (MBES)
Side scan sonar systems
Sub-bottom profilers
Magnetometers
Single beam echo sounders
Current profilers (ADCP)
Sound velocity profilers
CTD sensors

Positioning Systems

USBL systems (Ultra-Short Baseline)
LBL systems (Long Baseline)
DGPS (Differential GPS)
RTK positioning systems
Inertial navigation systems (INS)
Gyrocompasses
Motion reference units (MRU)
Doppler velocity logs (DVL)

ROV Survey Systems

ROV-mounted survey sensors
Laser scaling systems
3D photogrammetry equipment
High-definition cameras
Sonar imaging systems
CP probes & thickness gauges
Environmental sensors
Real-time data transmission

Data Processing Software

EIVA NaviPac/NaviScan
QINSy survey software
Caris HIPS & SIPS
SonarWiz processing software
AutoCAD & MicroStation
ArcGIS & QGIS
MATLAB & Python processing
Custom processing applications

Personnel & Competency

MPL’s survey teams comprise experienced professionals with specialized training and international certifications.

Survey Team

Qualified surveyors (RICS, IMCA)
Party chiefs & survey supervisors
Hydrographic surveyors
Geophysical surveyors
Survey engineers
Data processors & analysts
GIS specialists
CAD technicians

Certifications & Training

IMCA survey competency standards
IHO/FIG/ICA Category A/B
Offshore survival training (BOSIET/HUET)
Equipment-specific training
Software proficiency certifications
HSE certifications
Client-specific training
Continuous professional development

Quality & Standards Compliance

All survey operations are conducted in accordance with international standards including IHO S-44
(hydrographic surveys), ISO 19111 (coordinate systems), IMCA survey guidelines, and client-specific
requirements. Our quality management systems ensure consistent delivery of high-quality survey data
and documentation.

Integrated Survey Solutions

MPL provides integrated survey solutions that combine multiple survey disciplines for comprehensive project
support.

SURF Project Support

Pre-engineering route surveys
Installation support surveys
As-laid documentation
Burial verification surveys
Pre-commissioning surveys
Handover survey packages

OIMR Campaign Support

Well marking & positioning
Metrology for installations
Jumper dimensional surveys
Asset location surveys
Inspection & integrity surveys
Progress monitoring surveys

Environmental & Regulatory Support

Survey services supporting environmental monitoring and regulatory compliance requirements.

Environmental Survey Services

Baseline environmental surveys
Benthic habitat mapping
Seabed sampling support
Marine mammal monitoring support
Environmental impact assessment support
Post-installation monitoring
Decommissioning surveys
Regulatory compliance documentation

Safety & Quality Management

All survey operations are conducted under strict safety and quality management systems.

Safety Management

Zero Lost Time Incidents record
Comprehensive HSE procedures
Risk assessments & JSAs
Permit to work systems
Equipment safety systems
Emergency response procedures
Weather monitoring & planning
Continuous safety improvement

Quality Assurance

ISO 9001 quality systems
Survey quality control procedures
Equipment calibration programs
Data validation procedures
Independent data checks
Accuracy verification
Client acceptance procedures
Continuous improvement programs

Key Advantages

MPL’s survey services deliver exceptional value through technical excellence, experienced personnel, and proven
reliability.

Technical Excellence

State-of-the-art survey equipment
Advanced data processing capabilities
Multi-discipline survey expertise
High-accuracy positioning systems
Quality assurance systems
Standards compliance

Proven Experience

15+ years survey operations
43+ metrology operations
37+ well markings completed
All major Nigerian fields
5m to 1,500m water depth range
Long-term client partnerships

Integrated Solutions

Multi-discipline coordination
ROV-integrated surveys
Installation support integration
Real-time data delivery
Seamless project support
Cost-effective execution

Client Value

Key Takeaways

Marine Platforms Limited provides comprehensive survey and geophysical services supporting all phases of offshore field development. Our experienced teams, advanced equipment, and proven track record make us the partner of choice for critical survey operations.

Through advanced survey technology, experienced personnel, and rigorous quality assurance, MPL delivers high-quality survey data and documentation that supports safe, efficient offshore operations. Our integrated approach combining geophysical surveys, metrology, positioning services, and inspection surveys provides comprehensive solutions throughout the project lifecycle.

Survey Excellence

MPL’s survey services provide clients with accurate, reliable data that supports critical decision-making throughout project lifecycles. From initial site investigations through installation support, asset integrity monitoring, and decommissioning surveys, our comprehensive capabilities ensure clients have the information they need when they need it. Our commitment to quality, accuracy, and timely delivery has established MPL as a trusted survey partner across Nigeria’s offshore industry.

Metrology & Dimensional Control

High-precision metrology services ensure accurate positioning and dimensional control for subsea installations.

Subsea Metrology

ROV-mounted laser scaling
3D photogrammetry
Hub center measurements
Connection offset surveys
Dimensional verification
Tolerance checking
lignment surveys
As-built dimensional surveys

Positioning Services

USBL acoustic positioning
LBL acoustic arrays
DGPS/RTK positioning
Inertial navigation systems
Dynamic positioning support
Real-time positioning
High-accuracy positioning (HAP)
Position reference systems

Metrology Experience

Total Metrology Operations

0 +

Bonga Metrology Surveys

Egina/Akpo Operations

0 +

Jumper Metrology Surveys

Installation Support Surveys

Comprehensive survey support throughout installation campaigns ensures accurate positioning and successful
operations.