More on National Oilwell Varco's (NOV) Q4 results: Year-end backlog for capital equipment orders was a record $11.86B, up 2% Q/Q. New orders during the quarter were $2.42B, reflecting continued demand for oilfield equipment. Largest revenue gain was in the rig technology segment, up 14% Y/Y. Operating margin up 13% Y/Y, up 6% Q/Q. Shares flat premarket.