Top oilfield services provider Schlumberger Ltd said it would redeploy all of its pressure pumping fleet by early next quarter as demand rises in North America and most of its international markets.

North American shale producers have ramped up drilling in recent quarters as oil prices bounced back from their lows in 2016, when they hit about $27 per barrel.

Crude in the second quarter averaged $48.15 per barrel, and companies added 506 onshore rigs in the past year, according to a closely watched Baker Hughes report.

Schlumberger and rivals such as Halliburton and Baker Hughes GE Co, which help explorers locate oil and prepare drill-wells, are bringing back equipment they stacked during the downturn.

Houston-based Schlumberger said that North American revenue jumped 18 per cent and international revenue rose 4 per cent in the latest quarter from the preceding.

Chief executive Paul Kibsgaard said on an earnings call he was "somewhat positively surprised" in terms of activity in international markets.

To tap the improving demand in international markets, Schlumberger said it would buy a majority stake in Russia’s biggest oilfield services firm, Eurasia Drilling Co (EDC).

"The purchase of the Eurasia group is sort of a bet that international markets are going to keep advancing," said Stewart Glickman, energy equity analyst at CFRA Research in New York.

US onshore revenue soared 42 per cent in the latest quarter from the preceding, as fracking revenue was boosted by companies completing more wells and better pricing.

"We expect US land activity to remain strong throughout the second half of the year, with a frac calendar already fully booked well into Q4," said Patrick Schorn, executive vice president of new ventures at Schlumberger.

Total revenue rose 4.2 per cent to $7.46 billion in the second quarter.