What We do

Pipeline Maintenance

In a typical oil field, a number of small gathering lines lead from each well to central gathering facilities called oil batteries. Larger feeder pipelines, which are operated by oil producers, transport the crude oil to nearby terminals. The largest lines – transmission pipelines – transport crude oil and other liquids across the country.

Customers operate strategically placed terminals across client field to gather and store oil before it enters the main transmission lines. Think of these terminals as being similar to the large interchanges on the Transmission highway where many smaller roads converge. These sophisticated terminals are operated 24/7/365 by people who are specialized in the safe handling and shipping of oil.

In a typical natural gas field, a number of small gathering lines lead from each well to gas processing facilities.

At the gas processing facility, natural gas liquids (NGLs) like ethane, propane and butane, are separated from the natural gas, then transported via liquid pipelines to oil refineries for processing. Because natural gas is odourless, a product called methanethiol is added to the remaining natural gas to make it smell like rotten eggs, making it easy for people to detect gas leaks.

Once it’s processed, natural gas pipeline operators ship the natural gas through large transmission pipelines to the people who need it. Compressor stations are located along the pipeline route every 65 to 160 km. Large compressors, similar to jet engines (with up to 36,000 horsepower), move natural gas through the pipeline at around 40 km an hour. Sophisticated sensors along the pipeline route collect information like temperature, flow speed and pressure. The information is monitored in real-time from the control room, often via satellite or fibre optic feeds.

Whether they operate liquids or natural gas pipelines – has a master control room where all their pipeline operations are monitored. Every pumping station, every remote sensor, every maintenance operation, every patrol on the ground and in the air is monitored in the control room using a SCADA system (Supervisory Control and Data Acquisition), similar to those used to monitor airports and space stations. Any changes in regular operation are quickly detected here.

In addition to remote sensors, Pulety Engineering Limited patrol the line doing regular maintenance and keeping a careful eye on the pipeline right-of-way. Video surveillance cameras, fitted with hydrocarbon sensors (hydrocarbons give off a unique infrared signature) are also being used as well as temperature sensors to detect leaks.

All equipment along a pipeline is carefully inspected and maintained – both inside and out. For example, the inside of a pipeline is inspected regularly using pipeline inspection gauges, also known as smart pigs. They are highly sophisticated machines equipped with GPS tracking and sensors. These smart pigs travel inside the pipe to identify and locate anything out of the ordinary, like minute cracks or corrosion. The tool is placed into the launcher or launching station, it is then driven by the flow of the product, pushing the pig along down the line until it reaches the receiving station.

Offshore Installation

We are experienced at and capable of executing offshore installation projects, at either domestic or international locations to include facilities such as:

  • Production Facilities
  • Fixed Platform & Facilities
  • Floating Production Storage & Offloading Units (FPSO)
  • Storage Tanks
  • Floating Storage & Offloading Units (FSO)

We routinely carryout:

  • Offshore Facility Shutdowns and Maintenance Programs
  • Offshore Facility Commissioning & De-Commissioning.
  • Brownfield Modifications.
  • FSO and FPSO Subsea Mooring Installation.
  • Flexible Flowline and Riser Installations
  • All aspects of Subsea Field Development and Abandonment

Onshore Installation

We are experienced at and capable of executing onshore installation projects, at either domestic or international locations to include facilities such as

  • Refineries & Petrochemical Plants.
  • Power Plants
  • Gas Plants
  • Pump Stations
  • Compressor Stations

We routinely carryout:

  • Brownfield Modifications
  • Onshore Facility Commissioning & De-Commissioning

Offshore Construction Support Services

Offshore construction is the installation or constructions and facilities in a marine environment, usually for the production and transmission of electricity, oil, gas and other resources. Because construction in the offshore environment is a difficult and dangerous activity, we fabricate structures at our onshore bases and transport them offshore for installation. This is done to optimise the costs and risk of installing large offshore structures.

  • Base shop facilities, complete with fabrication machines and other equipment
  • Sub are welding of float equipment
  • Tension netting
  • Cutting and welding of conductors and wellheads
  • Welding habitat (hot work enclosure)
  • Pre-welding/post-welding heat treatment
  • Fabrication of bit breaker, support bit gussets an abandonment caps

Material Procurement and Supply Chain

All of our Supply is of high standard and good quality

This is Pulety Engineering Limited, our history and experience in this department stand, it earned the company the legitimacy and good business relationship with most world leading manufacturers as a result of consistency of quality services. Our Materials Procurement Department ensures specification accuracy materials procurement and services standard. They provide resources to immediately source, procure, expedite, inspect, package & preserve, transport, store and deliver all materials and equipment necessary to meet your Project requirements with optimised schedule and reduced cost. All of our Supply is of high standard and good quality with OEM (Original Equipment Manufacturer) traceability and standard or collaboration with reputable Suppliers that are OEMs Authorised Distributors (AD) and are recognised on an international basis as providers of products that meet your project requirements. Materials and equipment procured by Pulety Engineering Limited are supplied complete with Supplier certifications and all necessary MTR’s and MTC’s as appropriate, in compliance with project specifications and procedures.

Welding Services/Consulting

Pulety Engineering Limited provides welding services to clients in our speciality business terrain for both onshore and offshore activities. Pulety Engineering Limited has remarkable years of experience in providing engineered welding solutions. A leader in the welding industry, Pulety Engineering Limited is advancing the science of welding engineering and generating technical innovations through the application of new technologies and proven scientific methods.

Key Features

Welding engineering and consulting services including systems design, specification development, training and monitoring.

Developmental welding services for procedure design, qualification, process design and specialised testing including weldability, metallurgy, failure and corrosion analysis.

Orbital GTAW, pulsed GMAW, overlay, buttering, GTAW, SAW, SMAW, FCAW, GMAW and PAW.

Specialised and critical-application welding for deepwater production, riser systems, control systems, flowlines and land-based pipelines.  Capabilities include high-allow welding, coiled tube welding, CNC tube bending and cladding services.

Inspection services for non-destructive (NDT), in-house digital X-Ray and CWI monitoring.


  • Welding engineering and consulting.
  • Worldwide welding and full- scale production services.
  • Cladding
  • Inspection services
  • Research and development.


Critical welding for deepwater applications, multi-jointing of steel catenary risers, flowlines and land-based pipelines.

Welding of super duplex, nickel and other high-allow materials, including control components, couplers, umbilicals and flying leads.

Fabrication of cryogenic testing systems for aerospace.

Coiled tube services – bending and welding.

Cladding services.

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