Non-contact capacitive datalink for a downhole assembly

Patent metadata

Field	Value
Publication number	US-9007233-B2
Application number	US-201113333664-A
Country	US
Kind code	B2
Filing date	Dec 21, 2011
Priority date	Aug 31, 2007
Publication date	Apr 14, 2015
Grant date	Apr 14, 2015

Abstract

Aspects of this invention include a downhole assembly having a non-contact, capacitive coupling including first and second transceivers deployed in corresponding first and second downhole tool members. The capacitive coupling is disposed to transfer electrical signals between the first and second transceivers. In one exemplary embodiment, the capacitive coupling is configured to transfer data and power between a substantially non-rotating tool member and a rotating tool member, for example, the shaft and blade housing in a steering tool. Exemplary embodiments of this invention provide a non-contact, high-speed data communication channel between first and second members of a downhole assembly. Moreover, exemplary embodiments of the invention also provide for simultaneous non-contact transmission of electrical power between the first and second tool members.

First claim

I claim:

1. A downhole assembly comprising:
first and second downhole members;
a non-contact, capacitive coupling device including first and second capacitively coupled transceivers and a dielectric gap therebetween, the first transceiver deployed in the first member and the second transceiver deployed in the second member, the first and second transceivers disposed to transfer an electrical signal between the first and second members;
wherein the first and second transceivers…

Assignees

• Sugiura Junichi
• Schlumberger Technology Corp

Inventors

• Sugiura Junichi

Classifications

• G01V11/002 Primary

  Physics · mapped topic

• E21B17/028

  Fixed Constructions · mapped topic

• E21B17/0283

  Fixed Constructions · mapped topic