Wireline is a method used to perform work inside an existing oil or gas well without requiring a conventional drilling rig.

E-Line, short for Electric Line, is a type of wireline operation that uses an electrically conductive cable to lower specialist tools into a well. These tools can be used to collect information, measure conditions, inspect the well and perform specific well-intervention activities.

In simple terms, imagine a very long, strong electrical cable carrying specialist tools down into a well. The tools perform the required work underground, while the equipment at the surface controls the cable and monitors the operation.

A typical E-Line package can include a large cable reel, winch, control equipment and specialist downhole tools. Before the operation can begin, this equipment must be transported to the offshore platform, lifted into position and set up around the wellhead. For offshore operations, this can create a significant logistical and lifting challenge. The equipment can be heavy, the platform may have restricted deck space, and the existing platform crane may not have enough lifting capacity or reach. This is where Thunder Cranes provides specialist offshore lifting support.

Thunder Cranes provides modular and temporary crane solutions to help move, lift and position E-Line and wireline equipment on offshore platforms. The support can begin when the E-Line equipment arrives offshore on a supply vessel.

Heavy components such as cable reels and other equipment may need to be lifted from the vessel onto the platform. Once on deck, the equipment must be positioned correctly so the wireline team can carry out the well intervention. For projects involving multiple wells, E-Line equipment may also need to be repositioned or skidded between wellheads. Thunder Cranes provides the lifting capability required to support these movements.

An offshore platform may already have a crane, but that crane may not be suitable for every project. For example, Thunder Cranes’ published E-Line project involved a platform where the existing crane could not lift the heaviest E-Line component, which weighed approximately 4.5 tonnes. Thunder Cranes supplied a TC15 Stiff Leg Crane to provide the additional lifting capability required.

The crane was transported to the remote offshore platform by supply boat, assembled offshore and secured to the existing structure.  This demonstrates an important principle:

Having a crane doesn’t always mean having the right crane.

The required lifting solution depends on the equipment weight, lifting radius, available deck space, platform structure and the specific requirements of the operation.

A conventional crane vessel can provide significant lifting capacity, but it may not always be the most practical solution for a focused offshore well-intervention project. A modular crane can be transported in sections, assembled offshore and configured around the requirements of the platform.