The Halliburton and Baker Hughes merger has been approved by shareholders.
The merger was triggered by the decline in oil prices last year.
Halliburton investors voted in favour of issuing shares to allow the multi-billion transaction to go forward.
Dave Lesar, chief executive at Halliburton, said: “We are more confident than ever that this combination will create a stronger, more diverse organization with an unsurpassed depth and breadth of services benefitting our stockholders, customers, employees and other key stakeholders of both companies.”
Halliburton acquired Baker Hughes in a $35billion deal last year.