This study reviews recent advances in ultrasonic cement bond quality evaluation and proposes a unified framework for enhanced signal processing in ...

P.E. Pilkington Conoco Inc. Houston Evaluating cement between two strings of casing can be a problem. The signal from the outer string of casing can interfere with amplitude measurement if the inner ...

Getting ready for Thursday's showdown, the House Energy and Commerce Committee has released a bundle of documents that make BP look very shady -- including a BP engineer who called it a "nightmare ...

Laboratory tests of cement and additives closely resembling what BP PLC used in its Macondo well in the Gulf of Mexico strongly suggest that the mixture was unstable, the chief counsel for US ...