公开(公告)号：US20220127956A1

公开(公告)日：2022-04-28

申请号：US17571536

申请日：2022-01-10

Applicant: Merlin Technology, Inc.

Inventor： ALBERT W. CHAU ,  LOC Viet Lam

IPC: E21B47/12 ,  G01V3/30 ,  E21B7/04 ,  E21B47/095 ,  E21B47/125 ,  E21B7/30

Abstract: A drill string communication system is described. An uphole transceiver can couple a signal onto the drill string at a power that is always greater that a selectable power for a downhole signal. Communication from a drill rig to an inground tool can be re-initiated using a maximum uphole transmit power of an uphole transceiver. A procedure can establish a new set of transmission parameters for a drill string signal to establish communication between the drill rig and the inground tool. The system can include a walkover locator that receives an active/inactive status-controlled electromagnetic locating signal. Responsive to a locating signal degradation, a reconfiguration command can modify the locating signal. The uphole transceiver and a downhole transceiver can automatically modify at least one parameter of a downhole signal. An uphole receiver can apply a compensation response to a transferred signal to compensate for a drill string channel transfer function.

公开(公告)号：US20210277777A1

公开(公告)日：2021-09-09

申请号：US17328410

申请日：2021-05-24

Applicant: Merlin Technology, Inc.

Inventor： ALBERT W. CHAU ,  Loc Viet Lam ,  Scott Phillips

IPC: E21B47/13 ,  E21B7/04 ,  E21B47/024

Abstract: A transmitter is carried proximate to an inground tool for sensing a plurality of operational parameters relating to the inground tool. The transmitter customizes a data signal to characterize one or more of the operational parameters for transmission from the inground tool based on the operational status of the inground tool. A receiver receives the data signal and recovers the operational parameters. Advanced data protocols are described. Pitch averaging and enhancement of dynamic pitch range for accelerometer readings are described based on monitoring mechanical shock and vibration of the inground tool.