July 27 (Reuters) - Top oilfield service provider Schlumberger said on Wednesday its net assets in Russia were worth about $1 billion and had $400 million in unpaid bills as of June 30.

In March, Schlumberger decided to immediately suspend new investment and technology deployment to its Russia operation, after the country's invasion of Ukraine. (https://bit.ly/3viTbPq) (Reporting by Arunima Kumar in Bengaluru and Liz Hampton in Denver; Editing by Krishna Chandra Eluri)