Patent ID: 8555712
Filing Date: 2013-10-15
Classification: E21B

Abstract:
1. A sensing apparatus comprising: an elongated casing for lowering from a surface into a well and cementing therein, the elongated casing comprising an outside surface, a lower end and an upper end opposite the lower end; a sensor device protruding from the outside surface, for generating measurement data indicative of an environmental parameter; a cable extending from the sensor device, along the outside surface toward the upper end, for transmitting the measurement data to the surface; and a plurality of fins disposed on the outside surface, the fins being shaped to cause a straight flow of cement received at the fins to rotate around the longitudinal axis of the elongated casing when exiting the fins for increasing cement flow between the elongated casing and a surrounding environment to mitigate micro-annulus formation along the elongated casing.