Since inception of DOO Integrated Services Ltd, our engineering teams have successfully delivered highly complex engineering projects in remote and challenging locations across Nigeria. DOO Integrated Services Ltd engineering capabilities cover comprehensive services, including feasibility studies, FEEDs, DED and EPC projects for Greenfield facilities and revamps. Our services have been engaged across a variety of onshore and offshore projects.

Our multi-disciplined teams have an average of over 25 years industry experience providing independent, comprehensive engineering solutions beginning at the early concept phase and extending through final commissioning in the following disciplines and specialty areas: process; technical safety; instrumentation and controls, electrical; civil/structural; mechanical and piping.

Conceptual Engineering

Our team focuses on functional requirements, systematic engineering and decision quality process during feasibility study by studying all project stakeholder perspectives and reviewing economic return.

Front End Engineering Design (FEED)

Our FEED solutions provide certainty of delivery and a high level of reliability. Our cost estimates are based on legacy and market data from our construction and installation experience as well as from procurement and vendor network. Our designs reflect proven construction and installation practices to ensure reliable, efficient, quality project delivery, lower costs, and faster FEEDs.

Detail Design

We draw on several years of experience & knowledge of constructability and best practices across multiple-disciplined design teams.

Installation Engineering

We are experts at carrying out modeling and analysis required for any installation methodology. We work closely with engineers across our marine and fabrication teams, as well as specialist contractors, to enable fully engineered installation solutions.


  • Project Management & Administration
  • Conceptual Studies
  • Front End Engineering Design (FEED)
  • Detailed Engineering Design
  • Construction Management
  • Installation Engineering
  • Integrity Management
  • Procurement and Construction Support
  • Hookup and Commissioning Assistance