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：BR112014018184B1

公开(公告)日：2022-03-22

申请号：BR112014018184

申请日：2013-01-30

Applicant: WEATHERFORD TECH HOLDINGS LLC ,  WEATHERFORD/LAMB INC

Inventor： PAVEL DAVID ,  GUY F FEASEY ,  MARK A MITCHELL

IPC: E21B21/08

Abstract: método de perfuração de um furo do poço submarino. a presente invenção refere-se a um método de perfuração de um furo do poço submarino que inclui perfurar o furo do poço injetando fluido de perfuração através de uma coluna tubular estendida para dentro do furo do poço a partir de uma unidade de perfuração marítima (odu) e girar uma broca disposta no fundo da coluna tubular. o método ainda inclui, enquanto perfurando o furo do poço: misturar o fluido de içamento com os retornos de perfuração em uma taxa de fluxo proporcional à taxa de fluxo do fluido de perfuração, por meio disso formando uma mistura de retorno. o fluido de içamento tem uma densidade substancialmente menor do que a densidade do fluido de perfuração. a mistura de retorno tem uma densidade substancialmente menor do que a densidade do fluido de perfuração. o método ainda inclui, enquanto perfurando o furo do poço: medir a taxa de fluxo dos retornos ou da mistura de retorno e comparar a taxa de fluxo medida com a taxa de fluxo do fluido de perfuração para garantir o controle de uma formação sendo perfurada.

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：CA2876482C

公开(公告)日：2019-04-09

申请号：CA2876482

申请日：2012-11-14

Applicant: WEATHERFORD/LAMB INC

Inventor： HANNEGAN DON M ,  PENA CESAR ,  PAVEL DAVID ,  GRAYSON MICHAEL BRIAN ,  BOUTALBI SAID ,  COOPER TODD DOUGLAS ,  DUNN TIMOTHY P ,  ZAMORA FRANK

IPC: E21B21/08 ,  E21B7/00 ,  E21B33/14

Abstract: A method of cementing a tubular string in a wellbore includes: deploying the tubular string into the wellbore; pumping cement slurry into the tubular string; launching a cementing plug after pumping the cement slurry; propelling the cementing plug through the tubular string, thereby pumping the cement slurry through the tubular string and into an annulus formed between the tubular string and the wellbore; and controlling flow of fluid displaced from the wellbore by the cement slurry to control pressure of the annulus.

公开(公告)号：CA2744842C

公开(公告)日：2017-02-07

申请号：CA2744842

申请日：2008-03-31

Applicant: WEATHERFORD/LAMB INC

Inventor： NOSKE JOE ,  IBLINGS DAVID ,  PAVEL DAVID ,  BRUNNERT DAVID J ,  SMITH PAUL ,  GRAYSON MICHAEL BRIAN

IPC: E21B34/06 ,  E21B34/14

Abstract: Methods and apparatus enable reliable and improved isolation between two portions of a bore extending through a casing string disposed in a borehole. A downhole deployment valve (DDV) may provide the isolation utilizing a valve member such as a flapper that is disposed in a housing of the DDV and is designed to close against a seat within the housing. The DDV includes an operating mechanism for opening/closing the DDV. In use, pressure in one portion of a well that is in fluid communication with a well surface may be bled off and open at well surface while maintaining pressure in another portion of the casing string beyond the DDV.