.~ With indicating, testing, measuring or locating {21}
253.1
.~.~ Indicating the location, presence, or absence of cement
DEFINITION
Classification: 166/253.1
Indicating the location, presence or absence of cement:
(under subclass 250.01) A process including a step of determining or indicating the position, diffusion or existence of plugging or consolidating material.
(1) Note. For classification in this subclass a process must have a step which relates directly to the subject matter rather than to some step from which the position, presence or absence of cement, etc., may be deduced. For example, a step of logging a well may indicate the location to receive cement after a cementing operation, or the process may include the step of indicating the pressure of cement being pumped from which it may be deduced that cement is present. Such steps are too indirect to be included. An example of a process under this subclass is one in which the well is cemented by a cement containing a radioactive material whose presence is sensed to thereby determine the position of the cement.
SEE OR SEARCH THIS CLASS, SUBCLASS:
64, for apparatus comprising means for measuring the distance to a body of cement.
250.14, for a process of determining cement quality or make-up.
