National Oilwell Varco has signed contracts worth $1.5bn to supply drilling equipment packages for seven drillships to Brazilian firm Estaleiro Atlantico.

The company will supply drilling riser and pressure control equipment under what it says is its largest single order in its 150-year history.

National Oilwell Varco chairman, president and CEO Pete Miller said Brazil’s deepwater discoveries of the past several years have made it a significant offshore market where the company expects to grow.

“We are pleased to have been selected as the drilling equipment supplier for this prominent project and excited to work with one of Brazil’s premier shipyard companies,” said Miller.