4H Offshore provides independent and integrated subsea engineering services from conceptual definition and
design to construction, operation and maintenance.
At 4H Offshore, we have a holistic multidisciplinary approach and pay regard to system performance and interfacing.
We perform standalone services and work in integrated teams with our clients. We are product independent,
and dedicated to using our in-depth experience in subsea engineering and integrating services to provide
maximum value for our clients. With an increasing in the need for efficiency, reliability and durability,
clients are provided with cutting edge technologies for subsea infrastructure that are based upon decades
of experience. Provided solutions offer clients with configurations for all weather conditions with a reduction
in installation and maintenance cost. Accompanying our great products is the anytime, anywhere guaranteed
support offered to keep equipment running at maximum efficiency and capacity.
Our Subsea Solutions Includes:
We specialize in treating the water that is being injected into the drilling site to prevent
contamination of the oil.
Treatment of water being discharged back into the water bodies.
Pumping water into the oil well to increase the pressure of the oil for production or to
raise the level of oil in the well. This helps with the displacement of the oil.
Pumping gas into the oil well to maintain pressure of the reservoir for production.
Separation of contaminants such as sand from the oil being produced.
We supply pipe connecting manifold/processing equipment to a wellhead.
Riser for transportation of produced hydrocarbons and production materials from seabed to
Equipment for monitoring of individual pipe conditions including detection of hotspots, position
and time of a breach in the pipe, position control of external mounting accessories and
control of remaining fatigue life.
We design and manufacture Manifold used to divert oil/gas without flow interruption in our
facility in Nigeria.
We supply diverters used in maintaining and diverting wellbore fluids and gases during your
Control low-pressure kicks and to divert dangerous gases away from the rig through overboard
valves and piping attached to the Diverter housing.
We supply through our strategic partner Wellheads used at the surface to provide structural
and pressure containing interface for drilling and production equipment.
Remote Operated Underwater Vehicles (ROV)
We extensive range of ROV that are used for deep water equipment repairs that diver may not
be able to reach or potential mine site mineral testing.
Suction Pile Foundation
The subsea development is limited by the foundation options.Suction pile foundation has both cost and capacity advantages.
There are a few myths of design a suction pile, and ignoring or being unaware of those myths could have huge fiscal impact to a project.
PLET & PLEM
Pipeline End Terminations (PLET ) and Pipeline End Manifolds (PLEM) are designed to be attached to the end of subsea pipelines, providing a support for pipelines and a means to connect to other subsea structures.
Subsea hardware Manual
Methodology and Philosophy
Suction Pile Foundation
The subsea development is limited by the foundation options. Suction pile foundation has both cost and capacity advantages.
There are a few myths of design a suction pile, and ignoring or being unaware of those myths could have huge financial impact to a project.
Our other subsea engineering services include:
Early Engineering & Concept Design
Pre-FEED & FEED
Field Development & Systems Engineering
Pipeline & Flowline Design
Riser and Manifold Design
Annulus Testing & AVMS
3D Analysis Finite Element Analysis
Integrity Analysis & Management
Subsea Automation and Control
Well tie-backs, interventions and maintenance
Pipeline Design Analysis
Fabrication and assembly of subsea structures
Our unique expertise in subsea structures provide quick and cost-efficient solutions to you. Our Subsea Engineering
and Technical Services are: