BOTTOM HOLE ASSEMBLY FIBER OPTIC SHAPE SENSING

摘要

One or more of these thermomechanical properties of an underground formation can be monitored using a monitoring system. An example monitoring system includes a signal processing module, a visualization module, a signal source module, a signal detection module, and one or more optical fibers. Each fiber includes one or more sensors. The signal source module emits an optical signal into one or more optical fibers. The one or more sensors along the fiber interact with the optical signal, and alter the optical signal in response to one or more detected thermomechanical properties. The resulting optical signal is detected by the signal detection module. Based on the detected optical signal, the signal processing module determines the one or more thermomechanical properties that were detected by the sensors. An operator can view and monitor the detected thermomechanical properties using the visualization module.

主权项

1. A system, comprising:
a bottom hole assembly (BHA) comprising one or more drill collars and a drill bit connected to the one or more drill collars; and a sensor system for monitoring the BHA, comprising:
one or more lengths of optical fiber helically wound and extending along the one or more drill collars;a signal source module arranged to emit an optical signal into the one or more lengths of optical fiber;a signal detection module arranged to detect the optical signal guided from the signal source module by the one or more lengths of optical fiber;a signal processing module in communication with the detection module; andan operator interface in communication with the signal processing module, wherein the signal processing module is programmed to, during operation of the system:
determine measurement information, based on the detected optical signal, about a thermomechanical property at multiple different locations on the one or more drill collars while the BHA is used to bore a well, andsend a signal to the operator interface when measurement information exceeds a threshold.