| 摘要 |
A system for jetting a borehole in a seafloor (24), the system including a tubular (16), and a jetting tool (20) inserted into the tubular (16) and having an end from which fluid is selectively discharged to excavate the borehole. An electrical inclination sensor (38) is attached to the stem (21) of the tubular (16), and is in communication a transmitter (40). A receiver (42) is positioned proximate the sea surface and is in communication with the transmitter (40) through the fluid in a drill pipe (18), so that when the jetting tool (20) is excavating the borehole, an inclination of the tubular (16) is sensed by the inclination sensor (38), which inclination is communicated from the transmitter (40) to the receiver (42). |
