Results from second-quarter 2015 financial statements from U.S. companies with onshore oil operations suggest continued financial strain for some companies. Low oil prices have significantly reduced cash flow for U.S. oil producers. To adjust to lower cash flows, companies have turned to capital markets financing and also have reduced capital expenditures. With energy company bond yields widening in relation to U.S. Treasury bonds, some companies may have to reduce capital expenditures further to service their debt.