Oil + Gas

38-MW aeroderivative gas turbine introduced for oil and gas industry

The SGT-A35 RB turbine provides a cost-effective solution for the offshore oil and gas industry by increasing the power density of the topside power generating equipment and reducing the required space claim.

Using the combined expertise from its acquisitions of Dresser-Rand and Rolls-Royce Energy business, Siemens recently launched the latest evolution of its gas turbine portfolio – the SGT-A35 RB.

The SGT-A35 RB turbine produces a compelling solution for the challenging requirements of offshore applications, like floating production, storage and offloading (FPSO) vessels. FPSO vessels have become increasingly popular as oil and gas production moves towards deep-sea regions and harsher offshore environments to capture stranded reserves.

The SGT-A35 RB gas turbine, previously known as the Industrial RB211-GT30, is based on the proven pedigree of the Industrial RB211 and Industrial Trent 60 gas turbines, built with Rolls-Royce Aero Engine technology. This trusted legacy, evolved over 40 years of technological advancements, has more than 800 installations worldwide exceeding 37 million operating hours.

The SGT-A35 RB variant introduces a lightweight, free-power turbine that can generate up to 38 megawatts (MW). All rotating components are proven by millions of hours accumulated in flight, as well as industrial and marine service.

The SGT-A35 RB gas turbine is integrated into a compact, lightweight Dresser-Rand package, which is up to 30 percent smaller and lighter than Industrial RB211 predecessors.

The Dresser-Rand package uses fit-for -purpose packaging features and configurable options proven across oil and gas applications. Its modular design facilitates easy maintenance and reduces downtime to maximize availability and reduce clients’ operating expenditures. The package has also been designed to quickly exchange the complete gas turbine and power turbine. Over the years, the Dresser-Rand business has supplied more than 1,000 aeroderivative gas turbine packages to the oil and gas industry.

Available in 34 and 38 MW variants
The SGT-A35 RB gas turbine is available in 34 and 38 MW variants to match a range of application requirements. Both ratings are available for mechanical drive and 60 Hertz or 50 Hertz electrical generation. In this configuration, the gas turbine can directly drive a 2-pole A/C generator without the need for a gearbox.

The thermal efficiency of the gas turbine exceeds 40 percent at ISO conditions. The performance is ideal for hot climates and at 86 °Fahrenheit (30 °Celsius) the gas turbine retains more than 90 percent of its ISO power output.

Tags: FPSO, Gas Turbines, Offshore, SGT

other articles from insights issue 06.2017