ABSTRACT

Laboratory investigations and test well oscilloscope pictures were made to determine the application of acoustic signals for evaluation of effectiveness of casing cementing. This work indicated the possibilities of measuring the amplitude of acoustic signals from the pipe and form the formation both in open and cased hole to indicate the bonding to pipe and to formation. Field tests have shown the applicability of the system, but experience and further model tests have shown that a number of variables, such as type of cement, quantity of admixes sheath thickness, and time of logging after cementing, are being investigated and results to date are included. Results to date indicate that it will be possible to evaluate the effectiveness of cementing under most conditions.

Keywords:
casing and cementing, Thickness, open hole, well logging, pipe amplitude, sheath thickness, amplitude, coupling, acoustic signal, log analysis
Subjects:
Casing and Cementing, Formation Evaluation & Management, Cement and bond evaluation, Open hole/cased hole log analysis
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1961. Society of Petrophysicists & Well Log Analysts
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