Schlumberger Ltd is the world's largest supplier of products and services to the oil and gas industry. The company operates its business via multiple groups: Reservoir Characterization, Drilling, Production, and Cameron. The firm is investing more than any other services firm to make its offerings more bundled, which it believes is likely to be one of the key industry trends during the next 10 years. Its efforts on this front are most visible via its Schlumberger Production Management (SPM) business, which now accounts for 10% of its revenue. http://www.slb.com