VALVES, BOTTOM HOLE ASSEMBLIES, AND METHODS OF SELECTIVELY ACTUATING A MOTOR

摘要

Aspects of the invention provide valves, bottom hole assemblies, and methods of selectively actuating a motor. One aspect of the invention provides a valve (200) including: a barrel (202) having an interior having a circular cross - section, an inlet port (212), an outlet port (214), and a by-pass port (216); a first disc (204a) rotatably received within the barrel; and a second disc (204b) rotatably received within the barrel and pressed against the first disc to selectively form a seal. The first disc and the second each have an orifice (218a, 218b).