Our Services

Well Completion

GreatWall offers a complete array of Well Completion Services including intelligent Completion Designs, Equipment and Installation We provide complete well completions solutions for every conceivable reservoir drainage pattern from conception design to installation. GreatWall provides complete Well designs with the aid of the latest computer software and procures all well Completion equipment including; Flow Couplings, Stainless Steel or Incoloy Control Lines, Sub-surface Safety Valve (Wireline or tubing retrievable), Gas-lift Mandrels with Live or Dummy Valves, Sliding Sleeves, Snap Latch Seal Assemblies, Single Production Packers, Blast Joints, G-locators with Seal Assemblies, Liner Top Packers and Liner Tieback Systems with Liner Hanger Assemblies. We also provide Bridge Plugs and Cement Retainers. Our completion engineers bring over 100 combined years of tested experience to any well.


We know wireline and what it takes to earn trust in the industry. Our reputation rides on helping our customers achieve the maximum efficiencies in production through exceptional services and wellsite execution.

Our customers have come to count on our experience, technology and reliability. When you want better than good enough, you can depend on GreatWall.

We run it right…
At GreatWall, wireline service is our business—not just a small segment of what we do. Our exemplary track record in the field enables us to provide exceptional service to each customer. With every job, we strive to operate more efficiently and deliver better results each time.

In addition to advanced equipment, we provide proficient, skilled people onsite to execute the job. Our high volume of diverse wireline work ensures that our crews are experienced and equipped to respond appropriately to a range of unexpected well conditions.

Project Management Capability

With a consortium of Service Providers, in Well Completion Project Management, we provide the client a one-stop shop for:

1) Completions Services
2) Slickline and Electric Line Services
3) Down hole Electronic Measurement
4) Tree Installation and Testing
5) Well Clean and Testing

Tubing Conveyed Perforation (TCP)

When drilling a well, to ensure well bore integrity, and to isolate each rock formation from each other, the wellbore is lined with metal (casing) and cement placed between the casing and the formation to create a seal. TCP pierces holes in the casing, through the cement and into the formation. This allows communication between reservoir and well bore, thus allowing it to flow.

GreatWall a TCP company, so we know the technology and understand how to meet customer needs. Can efficiently set plug and shoot guns on same run.

Completion Services

THE WAY COMPLETIONS SHOULD BE, GREATWALL TAKES A DIFFERENT APPROACH TO COMPLETIONS – Nothing is predictable in the oilfield. Maximizing production and minimizing costs is a balancing act. In challenging, unconventional environments, it’s important that you have a partner who understands how to get the job done efficiently and effectively.

At GreatWall Technology, we don’t offer off-the-shelf solutions. We customize completion solutions for every project—and provide the tools and the knowledge to deliver the lowest costs and highest efficiencies. With GreatWall, you have access to a full array of completion solutions, all designed, tested and proven.

Back by GreatWall’s partnership with Halliburton they are tested known Services Company in the Industry worldwide.

Well Testing

From reservoir to disposal, Greatwall Technology provide safe, efficient and accurate well testing services to meet the needs of our customers in any well. We provide the following services namely: surface well testing, Data acquisition services, flare stack services and well clean up packages. We provide complete package of exploration and appraisal well testing services.

Workover Services

We are committed to providing a broad range of remedial and stimulation tools and equipment to our customers for enhancement and/or recovery of well production.

1) Cement Squeeze Tools
2) Acidizing Tools
3) Bridge Plugs (Retrievable, Composite and Cast Iron

For further information and enquiries, you can reach us at the following addresses:

Contact Info

Our location

OPERATIONS BASE: Plot 2, Chief Nwuke Street, Trans Amadi Industrial Layout, Port-Harcourt, Rivers State.

CORPORATE OFFICE: Plot 22B, Idowu Taylor Street, (Mezzanine Floor), Victoria Island, Lagos

Opening Hours

Mon-Fri: 8am-5pm
Sat-Sun: 8am-2pm


+234-703 066 2562
Email: contactus@greatwallltd.com