Baker Hughes has posted a quarterly loss compared with its profit one year ago.
A decline in oil prices has kept a lid on drilling activity for the company, which was bought over by Halliburton last year.
Baker Hughes said net loss attributable was $188million – or 43 cents a share – in the second quarter of 2015.
This was in comparison with a profit of $353million in 2014.
Revenue has also decreased by 33% to $3.97billion.
Earlier this week Halliburton posted a profits drop of 93% and said it had incurred about $400million in charges as companies have reduced drilling activity.
Baker Hughes and Halliburton have entered into a timing agreement with the antitrust division of the US Department of Justice, with the takeover expected to be completed by December.