Hydraulically actuated liner hanger arrangement and method
OwnerSamuel F. Bakerinventor
Life of this patent
Estimating the term…
Abstract
A liner hanger setting arrangement includes setting tool (T) which supports a piston (P) for engagement with a tubular member (M) moveably supported on the liner (L). At least one cone surface (27) is provided on the member (M). The tubular member (M) is movable by the piston (P) to engage slip segments (26) mounted on the liner (L) to urge the Iv slip segments into securing position with a well bore casing (C). A lock (LM) maintains the cone surface (27) and the slip segments in engaged relation.
Claims30
A hydraulically actuated liner hanger arrangement for use with an operating string to secure a liner on a casing in a well bore, said arrangement including:
- a setting tool having an upper end for connection with the operating string;
- a piston;
- said setting tool having a passage therein to communicate fluid to move said piston longitudinally;
- slip segments;
- slip segment support means supporting said slip segments on the liner for movement toward the casing;
- a tubular member engageable by said piston for downward movement longitudinally relative to said liner;
- at least one cone surface on said tubular member for movement therewith to urge said slip segments into engagement with the casing for securing the liner thereto
- a first releasable connection for releasably connecting said piston to said setting tool;
- a second releasable connection for releasably connecting the liner to said setting tool;
- a third releasable connection for releasably connecting said tubular member to the liner;
- said setting tool including a depending portion which depending portion extends longitudinally of and is spaced radially from said setting tool to provide a longitudinally extending radial space between said depending portion and said setting tool for receiving said piston therein;
- seals between said piston and said setting tool and between said piston and said setting tool depending portion to sealably position said piston in said radial space;
- said depending portion having a lower end;
- said piston including an extension depending therefrom;
- said piston extension terminating in a laterally extending projection which extends laterally adjacent said depending portion lower end;
- said first releasable connection extending between said depending portion and said piston extension;
- said tubular member having an upper and a lower end;
- a tubular sleeve on said piston for engaging said tubular member to push it down when said piston is moved down;
- and
- a lock to secure said at least one cone surface and slip segments engaged when said slip segments are engaged with the casing.
A hydraulically actuated liner hanger arrangement for use with an operating string to secure a liner on a casing in a well bore, said arrangement including:
- a setting tool for connection with the operating string;
- a piston;
- said setting tool having a passage therein to communicate fluid to move said piston longitudinally downwardly to secure the liner on the casing;
- slip segments supported on the liner for movement toward the casing;
- at least one cone surface supported on the liner for downward movement in response to movement of said piston to urge said slip segments in engagement with the casing;
- a releasable connection connecting said setting tool with the liner;
- seal means between said setting tool and the liner;
- wiper means releasably connected to said setting tool for wiping the liner ahead of cement conducted through the operating string and liner to the wall bore;
- plug means for wiping the operating string ahead of cement conducted there through and engageable with said wiper means before said wiper means moves through the liner;
- said wiper means includes upper and lower longitudinally spaced wiper means releasably connected to said setting tool;
- upper and lower plug means for wiping the operating string, respectively, ahead of and behind cement conducted there through, said upper and lower plug means engageable, respectively, with said upper and lower wiper means to move through the liner ahead of and behind the cement;
- a catcher in the liner;
- a latch for securing the lower wiper means with said catcher;
- and
- a latch for securing the upper wiper and plug and lower wiper together in said catcher to block off flow between the liner and the well bore.
A liner hanger for detachably securing to a setting tool having a port therein for communicating fluid with a piston to move it and secure a liner in a cased well bore, said liner hanger comprising:
- slip segments supported on the liner for movement toward the casing;
- cone surface means movably supported on the liner for downward movement in response to movement of the piston to urge said slip segments in engagement with the casing;
- a tubular member supported on the liner for moving the cone segments down on the liner in response to movement of the piston;
- a releasable connection securing said tubular member on the liner;
- a seal between said tubular member and the liner;
- the liner having an upper and a lower end;
- said tubular member extending longitudinally beyond the upper end of the liner and surrounding the liner to adjacent said slip segments;
- a slip spring body on the liner;
- slip springs having a first end connected with said slip spring body to extend said slip springs longitudinally from said slip spring body;
- said slip springs having a second end for connection with said slip segments;
- an annular shoulder on the liner spaced longitudinally from said slip spring body;
- a spring on the liner extending between said slip spring body and said annular shoulder;
- a frangible member releasably securing said slip spring body on said annular member.
The method of hydraulically setting a liner hanger in a well casing by a setting tool releasably connected with the liner hanger, the setting tool having a port communicating with a passage in the setting tool for conducting fluid to a piston in the setting tool to move cone means on a tubular member on the liner down to urge slip means supported on the liner into engagement with the well casing, comprising the steps of:
- positioning seal means on the setting tool to seal between the setting tool and the liner;
- releasably connecting the setting tool with the liner and positioning the seal means to seal between the liner and the setting tool;
- conducting fluid through the port in the setting tool to move the piston, the tubular member and the cone means on the liner downwardly to urge the slip means on the liner outwardly to secure with the well casing;
- disengaging the piston from the tubular member and removing it with the setting tool from the liner;
- and
- locking the tubular member with the liner when the slip means is secured with the liner.
The method of hydraulically setting a liner hanger with a liner having a catcher therein in a well casing in a well bore by a setting tool that is supported by an operating string for cementing the liner in the well casing wherein the setting tool is releasably connected with the liner hanger, the setting tool having a port communicating with a passage therein for conducting fluid to a piston in the setting tool to move cone means on a tubular member on the liner down to urge slip means supported n the liner into engagement with the well casing and liner wiper means releasably supported on the operating string for receiving plug means therein to move ahead of the cement, comprising the steps of:
- positioning seal means on the setting tool to seal between the setting tool and the liner;
- positioning the liner wiper means adjacent the lower end of the operating string;
- releasably connecting the setting tool with the liner and positioning the seal means to seal between the liner and the setting tool;
- conducting fluid through the port in the setting tool to move the piston, the tubular member and the cone means on the liner downwardly to urge the slip means on the liner outwardly into engagement with the well casing;
- disconnecting the setting tool from the liner and disengaging the piston from the tubular member;
- placing the plug means in the operating string and discharging the desired volume of cement into the operating string;
- and
- pumping the plug means ahead of the cement down the operating string with the cement to seat the plug means in the liner wiper means;
- moving the engaged liner wiper means and plug means through the liner with the cement;
- seating the liner wiper means in the catcher;
- separating the plug means from the liner wiper means;
- and
- discharging the cement from the liner into the well bore.
The method of hydraulically setting a liner hanger with a liner having a catcher therein in a well casing in a well bore by a setting tool that is supported by an operating string for cementing the liner int he well casing wherein the setting tool is releasably connected with the liner hanger, the setting tool having a port communicating with a passage therein for conducting fluid to a piston in the setting tool to move cone means on a tubular member on the liner down to urge slip means supported on the liner into engagement with the well casing and upper and lower liner wiper means releasably supported for receiving, respectively, upper and lower plug means therein to move ahead of and behind the cement, comprising the steps of:
- positioning seal means on the setting tool to seal between the setting tool and the liner;
- positioning the upper and lower liner wiper means adjacent the lower end of the operating string;
- releasably connecting the setting tool with the liner and positioning the seal means to seal between the liner and the setting tool;
- conducting fluid through the port in the setting tool to move the piston, the tubular member and the cone means on the liner downwardly to urge the slip means on the liner outwardly into engagement with the well casing;
- disconnecting the setting tool from the liner and disengaging the piston from the tubular member;
- placing the lower plug means in the operating string and discharging the desired volume of cement into the operating string;
- and
- placing the upper plug means in the operating sting after the cement;
- pumping the upper and lower plug means ahead of and behind, respectively, the cement down the operating string to first seat the lower plug means in the lower liner wiper means;
- moving the engaged lower liner wiper and the lower plug therein through the liner ahead of the cement;
- seating the upper plug in the upper liner wiper;
- moving the engaged upper liner wiper and the upper plug therein through the liner behind the cement;
- seating the lower liner wiper means and engaged plug in the catcher;
- separating the lower plug means from the lower liner wiper means;
- discharging the cement from the liner into the well bore;
- moving the engaged upper liner wiper means and upper plug means through the liner behind the cement;
- positioning the upper liner wiper and plug means with the lower liner wiper in the catcher;
- separating the plug means from the liner wiper means;
- and
- discharging the cement from the liner into the well bore.
A setting tool for securing a liner to a casing in a well bore by moving a tubular member on the liner down to engage slips on the liner and urge them outwardly to secure with the casing, said setting tool comprising:
- a mandrel;
- a piston on the setting tool movable downwardly to move the tubular member downwardly to set the slips;
- said mandrel having a port to conduct fluid to move said piston and the tubular member down to secure the slips on the liner with the casing
- means releasably supporting said piston on the setting tool;
- a releasable connection for releasably connecting said setting tool to the liner;
- and
- a seal on the setting tool sealably engaging the liner.
Dependencies are inferred from the claim text.