Choon Wah Wong

US Patent:

7347278, Mar 25, 2008

Filed:

Aug 27, 2004

Appl. No.:

10/928856

Inventors:

Nolan C. Lerche - Stafford TX, US
James E. Brooks - Manvel TX, US
Choon Fei Wong - Sugar Land TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

E21B 43/116

US Classification:

175 455, 102215

Abstract:

A system includes a well tool for deployment in a well, a controller, and a link coupled between the controller and the well tool. The well tool comprises plural control units, each of the plural control units having a microprocessor and an initiator coupled to the microprocessor. Each microprocessor is adapted to communicate bi-directionally with the controller. The controller is adapted to send a plurality of activation commands to respective microprocessors to activate the respective control units. Each activation command containing a unique identifier corresponding to a respective control unit.

US Patent:

20040108114, Jun 10, 2004

Filed:

Nov 20, 2003

Appl. No.:

10/717872

Inventors:

Nolan Lerche - Stafford TX, US
James Brooks - Manvel TX, US
Choon Wong - Pearland TX, US

International Classification:

E21B043/24

US Classification:

166/302000, 166/065100

Abstract:

An isolation apparatus is provided between an electrical conductor and an electrically-activated well tool. The isolation apparatus has a blocking element to enable a signal having a first electrical polarity to pass through the element. The blocking element blocks a signal having a second electrical polarity.