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：CA2881891C

公开(公告)日：2018-06-19

申请号：CA2881891

申请日：2015-02-12

Applicant: WEATHERFORD/LAMB INC

Inventor： BANSAL RAM K ,  GEORGE GEOFF ,  BUCHANAN GERALD WES DON ,  CUNNINGHAM JUSTIN ,  DE LEON EISENHOWER ,  NOSKE JOE ,  RING LEV ,  LEAL JERLIB J

IPC: E21B34/14 ,  E21B21/08

Abstract: A flow sub for use with a drill string includes a tubular housing having a longitudinal bore therethrough and a flow port through a wall thereof and a ball. The ball is disposed in the housing above the flow port, has a bore therethrough, and is rotatable relative to the housing between an open position where the ball bore is aligned with the housing bore and a closed position where a wall of the ball blocks the housing bore. The flow sub further includes a seat disposed in the housing above the ball for sealing against the ball wall 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 housing bore and a closed position where a wall of the sleeve is disposed between the flow port and the housing bore.

公开(公告)号：CA2846749C

公开(公告)日：2016-06-28

申请号：CA2846749

申请日：2011-01-05

Applicant: WEATHERFORD/LAMB INC

Inventor： BAILEY THOMAS F ,  MITCHELL MARK ,  PAVEL DAVID ,  RING LEV ,  BANSAL RAM K ,  IBLINGS DAVID

IPC: E21B21/10 ,  E21B7/00 ,  E21B19/16 ,  E21B21/12

Abstract: A method for drilling a wellbore includes drilling the wellbore by advancing the tubular string longitudinally into the wellbore; stopping drilling by holding the tubular string longitudinally stationary; adding a tubular joint or stand of joints to the tubular string while injecting drilling fluid into a side port of the tubular string, rotating the tubular string, and holding the tubular string longitudinally stationary; and resuming drilling of the wellbore after adding the joint or stand.

公开(公告)号：NO337070B1

公开(公告)日：2016-01-11

申请号：NO20061019

申请日：2006-03-01

Applicant: WEATHERFORD/LAMB INC

Inventor： BAILEY THOMAS FLOYD ,  BRUNNERT DAVID J ,  HAUGEN DAVID MICHAEL ,  SMITH KEVIN ,  BANSAL RAM K ,  FULLER TOM ,  ROOYAKKERS ROY W ,  SKINNER GRAHAM ,  TILTON FREDERICK T

IPC: E21B21/08 ,  E21B4/02 ,  E21B21/14 ,  E21B33/14

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.