公开(公告)号：CA2848409C

公开(公告)日：2019-11-05

申请号：CA2848409

申请日：2012-09-20

Applicant: WEATHERFORD/LAMB INC

Inventor： BANSAL RAM K ,  NOSKE JOE ,  MIHALJ MIROSLAV ,  MENARD BILL ,  BAILEY THOMAS F ,  PAVEL DAVID ,  BUCHANAN GERALD WES DON ,  GEORGE GEOFF ,  VIERAITIS DAVID

IPC: E21B17/18

Abstract: A flow sub for use with a drill string includes: a tubular housing having a longitudinal bore formed therethrough and a flow port formed through a wall thereof; a bore valve operable between an open position and a closed position, wherein the bore valve allows free passage through the bore in the open position and isolates an upper portion of the bore from a lower portion of the bore in the closed position; and a sleeve disposed in the housing and movable between an open position where the flow port is exposed to the bore and a closed position where a wall of the sleeve is disposed between the flow port and the bore; and a bore valve actuator operably coupling the sleeve and the bore valve such that opening the sleeve closes the bore valve and closing the sleeve opens the bore valve.

公开(公告)号：CA2830233C

公开(公告)日：2018-01-02

申请号：CA2830233

申请日：2013-10-16

Applicant: WEATHERFORD/LAMB INC

Inventor： BANSAL RAM K ,  MEEKS ARTHUR WARREN ,  HAQ MOHAMMED ALEEMUL ,  XIAO BIN ,  MIHALJ MIROSLAV ,  KIPPIE DAVID PETER ,  BAILEY THOMAS F

IPC: E21B37/02

Abstract: A wellbore cleaning tool for removing irregularities along the inner surface of a wellbore tubular may include a top sub, a cutting assembly, and a bottom sub. The tool is operable to remove irregularities, such as debris, burrs, and jagged edges, along the inside of the wellbore tubular, and thereby provide a clean, inner surface finish. The tool may be actuated into a retracted position, an extended position, and/or a deactivated position.