On the period from July 1st to 2nd our team conducted NBEU trial on well no. Saih Rawl - 319, PDO, Sultanate of Oman. NBEU was used in BHA with PDC bit. The NBEU was applied on 8-3/8 drilling through sandstone horizon which is described as the strong abrasive formation. The new design of NBEU successfully passed this test. Customer expressed desire to test the NBEU in longer section.