Patent Number: 8,770,293

Title: Multiple activation-device launcher for a cementing head

Abstract: A multiple activation-device launching system for a cementing head comprises a launcher body and at least one launching chamber that are sized to receive one or more activation devices therein. The activation devices are launched into the principal process-fluid stream inside the cementing head, and may be darts, balls, bombs, canisters and combinations thereof. The launching chambers are in fluid communication with an external power source for launching the activation device into the principal process-fluid stream.

Inventors: Giem; Greg (Houston, TX), Gambier; Philippe (Houston, TX), Rondeau; Joel (Antony, FR), Fitzgerald; Chris (Sugar Land, TX)

Assignee: Schlumberger Technology Corporation

International Classification: E21B 33/13 (20060101); E21B 33/05 (20060101)

Expiration Date: 7/08/12018