Abstract: A method of preparing a wellbore for production includes running a wellbore clean-out string, including a cement evaluation tool and a wellbore cleaning tool, into a wellbore, acquiring data relating to at least one property of a cement bond of the wellbore, using the cement evaluation tool, and simultaneously cleaning the wellbore, using the wellbore cleaning tool, as the clean-out string is run into the wellbore in order to acquire first and second sets of data while running the string into the wellbore. The first and second sets are combined to form first and second logs of cement bond, which are used to produce an enhanced log of the cement bond.

Abstract: The invention relates to a cement evaluation method and tool. In particular, the invention relates to a method of producing a wellbore cement bond log for evaluating a condition of cement in cased or lined portions of wellbores, and to a corresponding cement bond logging assembly. In an embodiment of the invention, a method of producing a wellbore cement bond log is disclosed which comprises the steps of running a cement evaluation tool (210) and a wellbore cleaning tool (222) into a wellbore (202); acquiring data relating to at least one property of a cement bond (212) of the wellbore using the cement evaluation tool; and generating a log of the acquired data.