Schlumberger (NYSE:SLB) has announced that there are more layoffs on the horizon.

The oil-field service giant is looking to streamline its support structure. Schlumberger announced that it will “book a $350 million pretax restructuring charge” in the fourth quarter that are related to these layoffs.

The company has not disclosed information on how many workers will lose their jobs. Low commodity prices have hurt the company as these have put pressure on pricing and demand from its oil producers.

Schlumberger announced plans to cut 11,000 workers in April, bringing their tally of recent layoffs to 20,000.

SLB stock is up 0.9% Tuesday.