DOVAHEIGHTS E N E R G Y L I M I T E D

SERVICE PROFILE

ADVANCED TECHNOLOGY SUPERIOR QUALITY UNRIVALLED EXPERIENCE ‘FIT FOR PURPOSE’ SOLUTIONS

Contents

Introduction 3 Profile 4 Filtration System Solutions 7 Composite Repair Services 9 Subsea Leak Detection Services 11 Onshore Pipeline Leak Detection 14 Automated Integrity Inspections 16 ROV Inspection Services 18

Suit 11/12, Brunswick Court, 5/7 Adebisi Oyenola Street, Idado Estate, Lekki – Lagos Email: consulting@dovaheights.com Telephone: +234 (0) 8037068226, +234 (0) 7034748793 Fax: +817 984 3360 www.dovaheights.com

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Company

Profile

Dovaheights Energy Limited incorporated in

2012, is a Nigerian company offering advanced

support services to the Oil and Gas industry.

Dovaheights offers advanced support services

to the subsea sector in the areas of subsea leak

detection and general underwater inspection

services. With operational base in Lagos,

Nigeria, we offer an excellent approach to

providing solutions to our clients..

Introduction

Dovaheights Energy Limited represents a unique

combination of talent, technology, teamwork

and tools.

We offers a complete and high quality range of

Subsea Services, Advanced Integrity Inspections,

ROV operations and Filtration solutions.

Backed by our foreign technical expertise we

strive to be innovative and reliable, providing

products and services that ensure optimal

operation for our clients.

Our onshore and offshore services are supplied

to a global market in which the oil and gas

sector predominates. No other company offers

the expertise and range of services that we offer.

We are proud to introduce Dovaheights to you.

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Profile

The key factors that contribute to the success of Dovaheights are quality, technology and teamwork. Quality Dovaheights provides services of high quality, has a proven track record and remains committed to the success of each assignment it undertakes. Our services are supported by a Quality Management System that ensures that all activities of the company are carried out in a manner that meets or exceeds the requirements agreed with the client. We are dedicated to a high quality of service to our clients.

Technology To be able to meet the requirements of our clients we effectively partner with our OEMs to have research and development programmes covering every aspect of our work. Dovaheights brings creativity to the solving of problems. Teamwork The company’s overall policy of decentralisation allows each department to function independently and to have direct contact with clients whilst remaining able to call on the resources of the remainder of the Company. Throughout the country, the company responds to clients’ requirements speedily and efficiently with a full range of integrated services. Co-operation and teamwork are enhanced by joint projects, technologies and short management lines.

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Profile

MISSION

It is our mission to offer our clients industry, products and services that are fit for purpose and provide our partners a vehicle with which to support their clients.

VISION

To be acknowledged by our clients, our people, and our shareholders, as the leading strategic partner in underwater-to-surface inspection.

Dovaheights Energy Limited offers its services to clients operating in Nigeria and the Gulf of Mexico.

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Filtration System Solutions

Composite Repair

Automated Integrity Inspections

Subsea Leak Detection

Onshore Pipeline Leak Detection

ROV Inspection

SERVICES

Local Content – Global Experience

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Filtration System Solutions In partnership with TIMEX Filtration and Water Systems located in Ankara-Turkey, Dovaheights provides high-quality, cost effective, reliable and environmentally-friendly, advanced filtration solutions. TIMEX is one of the leading manufacturers of the filtration systems below; Automatic Self-Cleaning Filters. Cartridge Filters. Strainers. Skid Filtration Systems.

A full line of filtration solutions, manual to fully automatic; filtration levels from 3500 microns to 2 microns. In addition to twenty-six (26) years experience, the production quality of TIMEX is confirmed by ASME, CE, PED, LLYOD, and ISO 9001.

Our filters can be used in a wide variety of applications, including: • Injection water treatment systems. • Cooling water filtration to protect heat

exchangers and bearings. • Service and utility water filtration. • Pre-filtration for SWRO desalination

systems. • Filtration of raw seawater for pipeline

flushing. • Waste water treatment systems.

FILTRATION SYSTEM SOLUTIONS

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Dovaheights/TIMEX Filtration technology

delivers;

• No plugging and sourcing of reservoir.

• Reduced wear on seals and bearings of

injections pumps.

• Increased interval between changes of

cartridges or bags in fine filtration

systems.

• Longer life of expensive RO and UF

membranes.

• Dramatic reduction in backwash water.

• Significant reduction in contaminant

concentration.

• Fewer maintenance operations in remote

sites, including offshore rigs and FPSOs.

We ensure continuous flow without

interruption and 100% cleaning of the filter

element. Our automatic filters use less than

1% of the total process water for cleaning.

TIMEX already have many reliable

references and satisfied clients all around

the world, including world's best and leading

EPC contractors.

FILTRATION SYSTEM SOLUTIONS

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PowerWrap composites are pre-

impregnated polyurethane wraps for

permanent pipeline and structural repair and

restoration.

Our composite repair products are both

innovative and simple, and yet provide the

pipeline and infrastructure industry with

state of the art technology.

Through extensive research, testing and

development, PowerWrap has been a leader

in the Energy Industry in providing fast,

easy and cost effective solutions to remedial

needs on and offshore.

COMPOSITE PIPELINE AND STRUCTURAL REPAIR SERVICE

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COMPOSITE PIPELINE AND STRUCTURAL REPAIR SERVICE

PowerWrap's Products can be installed easily

on straight pipe, elbows, tees, offshore

risers, underwater, flange reducers, and

used on saddle repairs for crevice corrosion

and dent gouges. It can be installed on all

specified pipelines including API-SL, ASTM

and AWWA.

Our products service everything from

Pipeline integrity solutions

Permanent pipeline repair

Corrosion protection

Coatings

Mechanical reinforcement

Dents and Leak Repair

We offer two main product groups - Composite Wraps and Epoxies. Our Composite Wraps Consist of • Aquawrap® • Aquawrap® Fast & • PowerSleeve®

Each has its benefits and specific uses, and all provide excellent structural reinforcement.

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Introduction Leaks in oil, natural gas, LPG, gasoline and other product pipelines always have a tragic consequence. All over the world the cost of remedying this problem is getting higher and higher for all pipeline owners. The best leak detection technology can help operators to save millions of dollars by preventing loss of products and environmental damage, and by preserving the company’s image.

Our Mission is simple:

To provide our clients with the world’s fastest, most efficient, and most accurate system for detecting and locating leaks in your pipeline network.

SUBSEA LEAK DETECTION

Our ALD® system has been developed year by year, eventually obtaining an international patent. Since 1998, Colmar has tested the ALD® efficiency worldwide in an extensive range of different offshore environments including strong currents, zero visibility, shallow and ultra deep water detecting leaks on buried pipelines, flanges, clamps, risers, pipe in pipe, well head etc. As a result of these field experiences, we can confirm that acoustic is the most reliable technique to detect escapes and thus the most efficient underwater leak detection system. The Acoustic Leak Detector (ALD®) system is composed of an underwater acoustic sensor, a POD (underwater electronic unit), a transmission line, a receiving unit, a PC based processor and a display software. In addition, a special application of ALD® technology, called “Stationary ALD®”, has been developed in order to monitor subsea installations for leaks generated by any fluid (gas, MEG, hydraulic oil, etc.). In other words, our subsea leak detection and underwater leak monitoring are able to satisfy all activities of survey, analysis and investigation.

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Introduction With the support of CO.L.MAR, Srl the Acoustic Leak Detector - ALD® system is deployed on clients' facilities and is able to locate very small leaks. ALD® is the fastest, most accurate and reliable response to leak emergencies.

Features and Benefits of the ALD® • Not affected by Current/Turbidity • Not affected by Visibility/Ambient • High sensitivity for small leaks • 100% Reliability • Works on buried pipeline • Cost Savings for the Operator

SUBSEA LEAK DETECTION

Advantages of Colmar’s ALD® • Various inspection techniques to adapt to different scenarios • Large experience and long track record

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SUBSEA LEAK DETECTION

STAND ALONE VERSION Suitable for integration into any AUV for low cost integrity inspection of sea-line assets.

TOWFISH The sensor is a “fish” to be towed along the pipeline track

INSTALLED ON ROV The vehicle drives the sensor along the pipeline, data transmitted through the ROV umbilical

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DIVER HAND-HELD The sensor is hand held by the diver to check flanges or short pipe segments

ONSHORE PIPELINE LEAK DETECTION

Introduction Dovaheights Energy are particularly focused on pipeline integrity and management. Based on proprietary and patented technologies as well as strategically partnerships with leading worldwide companies, we deliver a wide range of equipment, systems, operational safety, integrity management projects. Our projects are supported by an expert team of engineers and technicians specialized in hardware/software development. Applications are backed by 15 years’ experience on filed installing and optimizing Leak Detection Systems by Asel-Tech. We assures the best technical support to our clients. Remote Leak Detection System (RLDS) Asel-Tech’s RLDS is the most reliable and sensitive leak detection system available in the market today with proven commercial success. The system is able to detect and locate leak incidents in a matter of seconds. The RLDS combines an Artificial Neural Network, specially designed algorithms coupled by signal processing techniques to ensure a very high degree of accuracy plus very low false alarm rates.

Integrated Remote Leak Detection System (I-RLDS) Asel-Tech’s I-RLDS has been developed to cover the most important points as response time, sensitivity, reliability, accuracy, robustness and, the most important, featuring two different methodologies to detect leaks. The acoustic technology and compensated mass balance. The I-RLDS is clearly recommended in API RP 1130. Intelligent Line Break Detection System (ILBDS) The Asel-tech ILBDS – Intelligent Line Break Detection System for gas pipelines. The ILBDS continuously monitors the pipeline operation allowing instant identification of any problem or failure providing correct line shutdown to avoid disasters. New features based on modern algorithms as artificial intelligence are included to prevent false shutdowns and operational problems as well. This Asel-Tech solution takes line break detection to the next level offering features.

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ONSHORE PIPELINE LEAK DETECTION

Detection Sensitivity Smallest reliably detectable hole size (diameter) Depends on pipeline length, diameter, operating pressure, fluid characteristics, etc. Typically can detects hole sizes starting from 0,2% of the cross-sectional area Detection Time / Dependences Typically in the order of seconds Depends on section length, sound speed in the fluid, communication times Does not depends on hole sizes Localization Uncertainty / Dependencies Automatic alarm better than 2% of section length Down to 0,5%; with off line manual refining Leak location along its geographical coordinates Robustness Able to detect leaks even under communication failures Works even with the line blocked (upon it is pressurized)

Applications • Pipeline protection and

monitoring • Acoustic Leak Detection and

Monitoring System for Subsea pipelines

• Pipeline Intrusion Monitoring System;

• Pipeline Screw Anchors; • Saddle Bag anchoring systems for

pipelines; • Subsea pipelines leak location.

BENEFITS OF ASEL-TECH LDS Detects a leak in seconds,

alerting the operator in the control room, via a user-friendly, easy to understand screen.

Locates the leak to within a few meters, in both underground and underwater pipelines.

Detects very small leaks, identifying leak volumes of less than 1% of nominal flow-rate.

Does not lose the leak signal due to its configuration, technology and sensitivity.

It is immune to false alarms The lowest-cost product in the

market. Once commissioned, it runs on its

own. No tuning required.

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Pipeline Inspection Services Dovaheights Energy inspection services provide pipeline operators with the integrity data necessary to meet their integrity program objectives. Utilizing innovative tooling, Dovaheights provides superior inspection of oil and gas pipelines.

NON-DESTRUCTIVE TESTING NDT is fundamental in ensuring the safety of assets for personnel, environment and investors. Dovaheights delivers high quality NDT-services to all industries manufacturing and utilizing steel structures offshore, power plants, pressure vessels pipelines and storage tanks. We perform NDT during fabrication, in-service and during shut downs and maintenance.

NDT-Techniques We offer the most used NDT-techniques such as: Visual Testing, Radiography, Ultrasonic, Eddy Current, Liquid Penetrant, Magnetic Particle, a variety of leak testing methods. Furthermore, we supply Phased Array, Digital Radiography, P-Scan, ToFD and 3D MFL (Magnetic Flux Leakage).

AUTOMATED PIPELINE INTERGRITY INSPECTION SERVICES

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Robotic In-Line Inspection Our fleet of robotic ILI crawlers are equipped with cutting-edge NDE sensor technologies that provide comprehensive integrity data of “unpiggable” piping. Dovaheights’ robotic ILI services offer a better alternative to hydrostatic testing for validating pipeline integrity. Hydrostatic testing is a go/no-go method that reveals pipeline weakness by causing ruptures or breaks; it does not indicate areas of active corrosion. Even if a pipeline passes hydrostatic testing, the high-pressure from the test has been known to cause flaws to grow, weakening the pipe even further. Diakont’s high-resolution NDE inspection services detect and measure all pipeline defects as small as 0.02” without damaging the pipe Our products ensure fast inspection, reliable data and reduced production costs. Visualisation and documentation of quality Our automated ultrasonic inspection equipment will optimise your inspection process whether it is carried out in-service or during production. Our equipment increases your inspection speed, provides reliable data and reduces your overall inspection costs

AUTOMATED PIPELINE INTERGRITY INSPECTION SERVICES

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ROV Services At Dovaheights Energy, we take pride in providing a wide range of subsea services which can be tailored to our clients individual needs whether they require complete ROV Inspection, Repair and Maintenance (IRM) packages, hiring of equipment or personnel. Our highly-skilled and experienced team focus on the consistent provision of highly reliable, time and cost-effective solutions. Using the latest Internationally recognized ROV classes including: Eye Ball ROV systems and Free swimming Electric Compact WROVs affords our clients the maximum in flexibility and versatility. Through strategic allocation of our subsea resources, we can provide cost-effective and timely response to our clients’ offshore operations.

SERVICES We provide tailor made packages to fully accommodate each of our clients' bespoke needs, which can include: • Full NDT tasks • Platform inspections Hull and

Mooring survey • Mechanical chain measurement • Riser survey • Full internal ballast tank

inspection using micro ROV with CP Probe

• Emergency response • Pipeline survey & inspection • Dive support • Drill support • Seabed Survey • Subsea valve operations • Mattress laying • Debris clearance

ROV INSPECTION SERVICES

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Videoray Pro4

The VideoRay Pro 4 is the culmination of

more than a decade of ROV design and

development. The Pro 4 incorporates the

latest in small ROV design and technology

making it the most advanced, capable, and

versatile small ROV on the market today.

Completely computer driven by a sleek,

intuitive, and powerful new software

platform called VideoRay Cockpit, the Pro 4

is more advanced than anything else offered

in its class.

ROV INSPECTION SERVICES

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www.dovaheights.com