Casing mounted sensors, actuators and generators
AssigneeDresser Industries, Inc.
InventorsJean Michel Beique, Morris Benjamin Robbins
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Abstract
A casing sensor and methods for sensing using a casing sensor are disclosed. The casing sensor includes a casing shoe and a sensor coupled to the casing shoe. A casing data relay includes a downhole receiver coupled to a well casing and a transmitter coupled to the receiver. The casing sensor may be coupled to the transmitter. A drill string actuator may be controllable through the downhole receiver.
Claims37
A casing sensor comprising
- a casing shoe;
- a sensor coupled to the casing shoe.
A casing data relay comprising
- a downhole receiver coupled to a well casing;
- and
- a transmitter coupled to the receiver.
A method for collecting geological data comprising
- sensing one or more geological parameters during drilling using one or more sensors coupled to a well casing in a well bore;
- collecting data from the one or more sensors;
- and
- transmitting the data to the surface.
A method for maintaining the integrity of a formation in the vicinity of a casing shoe comprising
- measuring well bore pressure in the vicinity of the casing shoe during drilling.
A method for positioning look ahead sensors comprising
- positioning acoustic sensors along a casing string.
A method for monitoring well control events comprising
- monitoring pressure at two or more locations inside a casing of the well.
A method for determining whether cement in a well borehole has cured comprising
- positioning a temperature sensor on a casing;
- and
- monitoring the temperature of the cement using the temperature sensor.
Dependencies are inferred from the claim text.