rig count rose to 764 in the week ending July 21, compared with 371 rigs in the same week a year ago.
The company's revenue from North America surged 83 percent to $2.77 billion in the second quarter, due to increased demand for pumping and well-construction services in the region.
Halliburton said margins in its biggest market by sales grew "into double digits" in the quarter and CEO Jeff Miller expected margins from the region to improve.
Net profit attributable to Halliburton was $28 million, or 3 cents per share, in the second quarter ended June 30, compared with a loss of $3.21 billion, or $3.73 per share, a year earlier.
Halliburton's revenue rose 29 percent to $4.96 billion, marking the company's second straight quarter of increase, after seven quarters of double-digit percentage declines.