Schlumberger, Houston, (NYSE: SLB) reports the Schlumberger Product Group technology portfolio will be further streamlined while backed by a closely linked research, engineering, manufacturing and sustaining organization.

Paal Kibsgaard has been named president, reservoir characterization, which includes WesternGeco, wireline, drilling and measurements and well-testing technologies.

Doug Pferdehirt has been named president, reservoir production, encompassing well services, completions and artificial lift products and services.

Jeff Spath has been named president reservoir management, which includes data and consulting services, Schlumberger Information Services, Schlumberger business consulting, and Schlumberger water and carbon services.

Schlumberger provides global oilfield services including wireline technologies; directional drilling, measurement and logging services