Gordon Technologies, LLC

J Hunter Simmons

Terrence G Frith

Benjamin G Frith

Telemetry of data from a Remote Data Source (RDS) in a Bottom Hole Assembly (BHA) for subterranean drilling. The BHA has a Bottom Mounted Mud Pulser (BMMP), a Main Processing Unit (MPU) and an acoustic sensor uphole from the BMMP, a shock absorbing tool downhole from the BMMP, and the RDS downhole from the shock absorbing tool. A first encoded RDS data signal is translated into an acoustic data signal, which follows an acoustic pathway to the acoustic sensor. An acoustic contact assembly sleeve preferably deployed uphole from the shock absorbing tool allows the acoustic data signal to bypass the shock absorbing tool. The acoustic sensor translates the acoustic data signal into a second encoded RDS data signal. The MPU decodes the second encoded RDS data signal into RDS data. The BMMP telemeters the RDS data received from the MPU in at least an uphole direction.

Acoustic datalink with shock absorbing tool useful in downhole applications

A datalink tool comprising an MWD-connected assembly disposed to move relative to an LWD-connected assembly. A hardwired electrical connection is provided between the MWD-connected and LWD-connected assemblies. An oil space is provided such that at least part of the hardwired electrical connection is configured to be immersed in a nonconductive oil contained inside the oil space. A compensator sleeve contributes at least in part to isolation of nonconductive oil in the oil space from drilling fluid residing outside the space. In some deployments, the drilling fluid may be conductive. The compensator sleeve is disposed to expand and relax in response to pressure variations in the drilling fluid, thereby attenuating a corresponding effect of the pressure variations in the nonconductive oil inside the oil space.

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Lafayette, LA, United States of America

J Hunter Simmons