Gibson Dunn & Crutcher, Cravath Swaine & Moore and Baker Botts have won mandates on oil field services company Schlumberger's acquisition of Cameron International.

Paris-headquartered Schlumberger will acquire Houston-based Cameron in a deal valued at $14.8bn (£9.52bn). The deal is expected to close in the first quarter of 2016, subject to shareholder and regulatory approval.

Baker Botts is leading for Schlumberger. Its Houston-based team includes corporate partners David Kirkland, Tull Florey and AJ Ericksen, tax partner Derek Green and employee benefits partner Rob Fowler. Austin-based partner Derek McDonald is advising on environmental issues.

Gibson Dunn is acting as antitrust counsel for Schlumberger. Its team includes New York litigation and antitrust partner John Herfort, Washington DC antitrust partner Adam Di Vincenzo, Brussels antitrust partner Peter Alexiadis.

Cravath is acting as outside counsel to Cameron. Cravath's New York-based team is being led by the firm's corporate co-head Scott Barshay and corporate partners George Schoen and Keith Hallam. They are being assisted by tax partners Stephen Gordon and Lauren Angelilli, employee benefits partner Eric Hilfers, antitrust partner Christine Varney and environment partner Matthew Morreale.

This deal follows the November 2014 merger of oil field services companies Halliburton and Baker Hughes in a $34.6bn (£22bn) deal.

In that deal Wachtell Lipton Rosen & Katz acted for Halliburton with assistance from Baker Botts.

Davis Polk and Wilmer Cutler Pickering Hale and Dorr acted as joint legal adviser to Baker Hughes and Sullivan & Cromwell advised Baker Hughes' financial adviser, Goldman Sachs.