Remotely actuated clamping devices for borehole seismic sensing systems and methods of operating the same

摘要

A remotely actuated clamping device for a borehole seismic sensing system. The remotely actuated clamping device includes a clamping mechanism configured to engage a surface of a borehole by actuation of the clamping mechanism. The remotely actuated clamping device also includes a fluid based actuator configured to actuate the clamping mechanism. The fluid based actuator includes a chamber configured to be kept at a pressure that is isolated from an ambient pressure of the borehole. The fluid based actuator also includes a piston within the chamber. The chamber receives a pressurized fluid to move the piston within the chamber to actuate the clamping mechanism. The pressure used to actuate the clamping mechanism is independent of the ambient pressure of the borehole. Also disclosed are methods of operating the device.

主权项

1. A remotely actuated clamping device for a borehole seismic sensing system comprising:
a clamping mechanism configured to engage a surface of a borehole by actuation of the clamping mechanism; and a fluid based actuator configured to actuate the clamping mechanism, the fluid based actuator including a chamber configured to be kept at a pressure that is isolated from an ambient pressure of the borehole, the fluid based actuator also including a piston within the chamber, the chamber receiving a pressurized fluid to move the piston within the chamber to actuate the clamping mechanism, wherein a pressure used to actuate the clamping mechanism is independent of the ambient pressure of the borehole, wherein the clamping mechanism includes a pivoting linkage arm, the pivoting linkage arm including a plurality of pivotally connected links between a first end of the pivoting linkage arm and a second end of the pivoting linkage arm, the first end of the pivoting linkage arm being connected to a connecting rod assembly that extends through the chamber, and a second end of the pivoting linkage arm being connected to another portion of the remotely actuated clamping device, the clamping mechanism also including a foot member connected to the pivoting linkage arm at a position between the first end of the pivoting linkage arm and a second end of the pivoting linkage arm.