Schlumberger’s move to buy Smith International for $11.3 billion is the latest in a series of acquisitions by the larger services players.

Baker Hughes is expecting to close its takeover deal with 
BJ Services later this quarter and Weatherford bought the services arm of TNK-BP not so long ago.

Andrew Gould, the chief executive of Schlumberger, sees expertise to be gained and savings to be made from acquiring Smith in this all-stock arrangement.

If