System for controlling hydrocarbon bearing zones using a selectively openable and closable downhole tool

Assignee

• Petroquip Energy Services

Inventors

• William John Darnell (23 patents)
• Charles David Wintill (18 patents)
• Rodney Wayne Long (20 patents)
• Todd Ulrich Chretien (14 patents)
• Tracy Dean Blanton (6 patents)
• William Ryle Darnell (14 patents)

View full patent text on Google Patents →