Schlumberger comprises of two business segments.

Schlumberger Oilfield Services supplies a wide range of products and services from formation evaluation through directional drilling, well cementing and stimulation, well completions and productivity to consulting, software, information management and IT infrastructure services that support core industry operational processes.

WesternGeco provides advanced acquisition and data processing services.

Schlumberger K. K. belongs to Oilfiled Services segment, and is playing a role as an important base for wireline development and manufacturing in Asia.