公开(公告)号：CA2600602C

公开(公告)日：2013-01-15

申请号：CA2600602

申请日：2007-09-07

Applicant: WEATHERFORD LAMB

Inventor： BELCHER GARY ,  STEINER ADRIAN ,  SCHMIGEL KEVIN ,  BRUNNERT DAVID ,  NOTT DARCY ,  TODD RICHARD ,  STANLEY JIM ,  HARRALL SIMON

IPC: E21B21/08 ,  E21B17/00 ,  E21B17/01 ,  E21B17/042 ,  E21B33/14 ,  E21B43/10 ,  E21B43/34 ,  E21B44/00

Abstract: In one embodiment, a method for drilling a wellbore includes an act of drilling the wellbore by injecting drilling fluid through a tubular string disposed in the wellbore, the tubular string comprising a drill bit disposed on a bottom thereof. The drilling fluid exits the drill bit and carries cuttings from the drill bit. The drilling fluid and cuttings (returns) flow to a surface of the wellbore via an annulus defined by an outer surface of the tubular string and an inner surface of the wellbore. The method further includes an act performed while drilling the wellbore of measuring a first annulus pressure (FAP) using a pressure sensor attached to a casing string hung from a wellhead of the wellbore. The method further includes an act performed while drilling the wellbore of controlling a second annulus pressure (SAP) exerted on a formation exposed to the annulus.

公开(公告)号：NO341483B1

公开(公告)日：2017-11-27

申请号：NO20074526

申请日：2007-09-07

Applicant: WEATHERFORD/LAMB INC

Inventor： BRUNNERT DAVID J ,  HARRALL SIMON ,  BELCHER GARY ,  STEINER ADRIAN ,  SCHMIGEL KEVIN ,  NOTT DARCY ,  TODD RICHARD ,  STANLEY JIM

IPC: E21B21/08 ,  E21B17/042

Abstract: I en utførelsesform inkluderer en fremgangsmåte for boring av et borehull en handling med å bore borehullet ved å injisere borefluid gjennom en rørstreng anbrakt i borehullet, idet rørstrengen omfatter en borekrone anordnet ved en bunn av rørstrengen. Borefluid kommer ut av borekronen og medfører borekaks fra borekronen. Borefluid og borekaks (returnerer) strømmer til en overflate av borehullet via et ringrom definert ved en ytre overflate av rørstrengen og en indre overflate av borehullet. Metoden inkluderer videre en handling utført under boring av borehullet med å måle et første ringromstrykk (FAP) ved bruk av en trykkføler festet til en fôringsrørstreng som henger ned fra et brønnhode i borehullet. Fremgangsmåten inkluderer videre en handling utført under boring av borehullet med å kontrollere et andre ringromstrykk (SAP) utøvet på en formasjon eksponert overfor ringrommet.

公开(公告)号：NO20074526L

公开(公告)日：2008-03-10

申请号：NO20074526

申请日：2007-09-07

Applicant: WEATHERFORD LAMB

Inventor： BRUNNERT DAVID J ,  HARRALL SIMON ,  BELCHER GARY ,  STEINER ADRIAN ,  SCHMIGEL KEVIN ,  NOTT DARCY ,  TODD RICHARD ,  STANLEY JIM

IPC: E21B21/08 ,  E21B47/06

Abstract: In one embodiment, a method for drilling a wellbore includes an act of drilling the wellbore by injecting drilling fluid through a tubular string disposed in the wellbore, the tubular string comprising a drill bit disposed on a bottom thereof. The drilling fluid exits the drill bit and carries cuttings from the drill bit. The drilling fluid and cuttings (returns) flow to a surface of the wellbore via an annulus defined by an outer surface of the tubular string and an inner surface of the wellbore. The method further includes an act performed while drilling the wellbore of measuring a first annulus pressure (FAP) using a pressure sensor attached to a casing string hung from a wellhead of the wellbore. The method further includes an act performed while drilling the wellbore of controlling a second annulus pressure (SAP) exerted on a formation exposed to the annulus.

公开(公告)号：CA2600602A1

公开(公告)日：2008-03-07

申请号：CA2600602

申请日：2007-09-07

Applicant: WEATHERFORD LAMB

Inventor： STEINER ADRIAN ,  HARRALL SIMON ,  NOTT DARCY ,  SCHMIGEL KEVIN ,  TODD RICHARD ,  BRUNNERT DAVID ,  BELCHER GARY ,  STANLEY JIM

IPC: E21B21/08 ,  E21B17/00 ,  E21B17/01 ,  E21B17/042 ,  E21B33/14 ,  E21B43/10 ,  E21B43/34 ,  E21B44/00 ,  E21B47/06 ,  E21B47/12

Abstract: In one embodiment, a method for drilling a wellbore includes an act of drilling the wellbore by injecting drilling fluid through a tubular string disposed i n the wellbore, the tubular string comprising a drill bit disposed on a bottom thereof. The drilling fluid exits the drill bit and carries cuttings from the drill bit. The drilling fluid and cuttings (returns) flow to a surface of the wellbore via an annulus defined by an out er surface of the tubular string and an inner surface of the wellbore. The method further includes an act performed while drilling the wellbore of measuring a first annulus pressure (FAP) using a pressure sensor attached to a casing string hung from a wellhead of the wellbore. The method further includes an act performed while drilling the wellbore of controlling a second annulus pressure (SAP) exerted on a formation exposed t o the annulus.