Exxon Mobil Corp has already agreed to pass control of its operations to PDVSA by the tight May Day deadline.
Chavez, who is pressing a raft of nationalisations since a December landslide re-election, wants the state to take at least 60 per cent of the projects that develop tarry crude in the Opec nation.
PDVSA director Eulogio del Pino said in a company statement the committees were being formed "so that the nationalisation of these businesses should be finalised by May 1 and that the operations should be transferred from the foreign firms to the Venezuelan state."
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