WELL BED ISOLATION DEVICE Russian patent published in 2011 - IPC E21B33/12 

Abstract RU 2425954 C1

FIELD: oil and gas industry.

SUBSTANCE: device includes stepped housing made in the form of its upper part at least with one filling hole; and lower part with at least one radial hole; sleeve with at least one radial hole which is placed in the housing and covers the radial hole of lower part of the housing. There is casing forming together with outer lower part of housing an annular chamber where isolating sleeve with inner annular bore is placed; mounting seat with fixture of locking member for the whole operating period of the device, which is attached to lower part of sleeve; intermediate sleeve placed in upper part of housing opposite its filling hole and made in lower part with limit stop of axial movement of sleeve; shutoff sleeve with mounting seat, which is placed in housing above intermediate sleeve, and hydraulic packer on lower part of housing. At that, device has the possibility of providing the hydraulic connection of inner cavity of sleeve to cavity of hydraulic packer through radial holes of sleeve, radial holes of lower housing part and inner annular bore of isolating sleeve when packer is set to working position and disconnection of the above connection when isolating sleeve moves to its extreme position when the specified packer pressure is achieved.

EFFECT: higher operating reliability of device in wells with various curvature of their shafts and horizontal shafts.

2 dwg

Similar patents RU2425954C1

Title Year Author Number
DEVICE FOR CASING LINER INSTALLATION IN WELL 2009
  • Terent'Ev Sergej Vladimirovich
  • Vanifat'Ev Vladimir Ivanovich
  • Dudaladov Anatolij Konstantinovich
  • Elufer'Ev Jurij Mikhajlovich
  • Strykhar' Aleksandr Filippovich
  • Vlasov Aleksej Vasil'Evich
RU2387807C1
DEVICE FOR LIP-TYPE CEMENTING OF WELL 2009
  • Vanifat'Ev Vladimir Ivanovich
  • Terent'Ev Sergej Vladimirovich
  • Dudaladov Anatolij Konstantinovich
  • Elufer'Ev Jurij Mikhajlovich
  • Strykhar' Aleksandr Filippovich
  • Vlasov Aleksej Vasil'Evich
RU2386012C1
DEVICE FOR SETTING SHANK END OF CASING IN WELL 2010
  • Terent'Ev Sergej Vladimirovich
  • Vanifat'Ev Vladimir Ivanovich
  • Elufer'Ev Jurij Mikhajlovich
  • Toropynin Vladimir Vasil'Evich
  • Dudaladov Anatolij Konstantinovich
RU2424423C1
CHECK VALVE FOR WELL 2009
  • Vanifat'Ev Vladimir Ivanovich
  • Stepanov Andrej Aleksandrovich
  • Dudaladov Anatolij Konstantinovich
  • Terent'Ev Sergej Vladimirovich
  • Elufer'Ev Jurij Mikhajlovich
  • Strykhar' Aleksandr Filippovich
  • Vlasov Aleksej Vasil'Evich
RU2418154C1
FACILITY FOR SEALING OF CASING LINER IN WELL 2008
  • Terent'Ev Sergej Vladimirovich
  • Vanifat'Ev Vladimir Ivanovich
  • Dudaladov Anatolij Konstantinovich
  • Elufer'Ev Jurij Mikhajlovich
  • Strykhar' Aleksandr Filippovich
  • Vlasov Aleksej Vasil'Evich
RU2362870C1
GEAR FOR INSTALLATION OF CASING LINER IN WELL 2002
  • Vanifat'Ev V.I.
  • Terent'Ev S.V.
  • Dudaladov A.K.
  • Elufer'Ev Ju.M.
  • Volodin A.M.
  • Voronov V.G.
  • Strykhar' A.F.
  • Vlasov A.V.
RU2203383C1
DEVICE USED FOR INSTALLING CASING LINER IN WELL 2007
  • Terent'Ev Sergej Vladimirovich
  • Vanifat'Ev Vladimir Ivanovich
  • Dudaladov Anatolij Konstantinovich
  • Strykhar' Aleksandr Filippovich
  • Elufer'Ev Jurij Mikhajlovich
  • Volodin Aleksej Mikhajlovich
  • Vlasov Aleksej Vasil'Evich
RU2346143C2
DEVICE FOR STEPWISE CEMENTING OF TAIL PIECE 2007
  • Terent'Ev Sergej Vladimirovich
  • Vanifat'Ev Vladimir Ivanovich
  • Dudaladov Anatolij Konstantinovich
  • Strykhar' Aleksandr Filippovich
  • Elufer'Ev Jurij Mikhajlovich
  • Volodin Aleksej Mikhajlovich
  • Vlasov Aleksej Vasil'Evich
RU2344271C1
DEVICE FOR INSTALLATION AND SEALING OF CASING LINER IN WELL 2000
  • Terent'Ev S.V.
  • Dudaladov A.K.
  • Vanifat'Ev V.I.
  • Elufer'Ev Ju.M.
  • Volodin A.M.
  • Voronov V.G.
  • Vlasov A.V.
RU2171366C1
DEVICE FOR SETTING SHANK END OF CASING IN WELL 2009
  • Terent'Ev Sergej Vladimirovich
  • Vanifat'Ev Vladimir Ivanovich
  • Toropynin Vladimir Vasil'Evich
  • Dudaladov Anatolij Konstantinovich
RU2415254C1

RU 2 425 954 C1

Authors

Terent'Ev Sergej Vladimirovich

Vanifat'Ev Vladimir Ivanovich

Toropynin Vladimir Vasil'Evich

Strykhar' Aleksandr Filippovich

Elufer'Ev Jurij Mikhajlovich

Dates

2011-08-10Published

2010-03-30Filed