The Chinese Ministry of Commerce (MOFCOM) approved the merger with no conditions and now the pair plan to finalise the $12 billion merger on 1 April.
US regulators cleared the deal late last year and their European counterparts approved the proposal in February.
Cameron and Schlumberger began working together through the OneSubsea joint venture in June 2013.
Schlumberger has been aggressively expanding its technical capabilities through the bust in oil prices with acquisitions both large and small.
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