Schlumberger Ltd. (SLB) Chief Executive Andrew Gould said Monday that a further round of layoffs is likely at the oil services firm due to low energy prices.

"We have already announced a headcount reduction of 5%, which will largely be completed by the end of the first quarter, and a further reduction of a similar amount is likely over the coming months," he said in a speech at the Howard Weil annual energy conference.

Gould's comments come as other oilfield services companies have announced layoffs in response to falling oil and natural gas prices.

Earlier this month, oilfield services provider Baker Hughes Inc. (BHI) said the company has begun laying off 1,500 workers, or about 4% of its workforce, as part of a second round of cuts resulting from the economic downturn.

-By Jason Womack, Dow Jones Newswires; 1-713-547-9201; jason.womack@dowjones.com