# US 2013/0153203 A1 · Subterranean Tool with Shock Absorbing Shear Release > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0153203 A1 - Document ID: US20130153203A1 - Status: Published application - Kind: A1 - Application number: 13/330,980 - Filed: 2011-12-20 - Published: 2013-06-20 - Earliest claimed: 2011-12-20 - Assignees: Baker Hughes Incorporated - Inventors: Donald P. Lauderdale - Web page: https://patentgrep.com/patent/US20130153203A1 ## CPC - E21B 17/06: Releasing-joints, e.g. safety joints - E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS ## Abstract A subterranean tool can be actuated with one or more control lines for a hydraulic release. It can further be actuated with a shear release after a lockout feature for the shear release is defeated. The shear release features a lock that limits relative movement so that a shear member can be defeated but without a release. A dog limits relative movement in a wider groove where dog movement in the groove allows a shock absorbing feature to act to cushion the release as the shear member breaks. The relative movement is reversed to let a retaining ring drop out of the way into a groove that comes into alignment with it. The relative movement is reversed again to pull a sleeve out from under gripping collets that have previously failed to release and the tool releases from that point on the same way as the control line actuated release. ## Claims ### Claim 1 A tool for subterranean use, comprising: a mandrel; a final controlled element selectively movable between a first and a second position; a movable member on said mandrel said movable member selectively holding said final controlled element in said first position; a lock to selectively prevent movement of said mandrel with respect to said final controlled element; said movable member selectively defeating said lock to enable limited movement of said mandrel to shear a shear member and actuate a shock absorber while retaining said final controlled element in said first position. ### Claim 2 (depends on 1) The tool of claim 1, wherein: said movable member comprises an inner sleeve; said lock selectively securing said mandrel to an outer sleeve overlapping said inner sleeve, whereupon initial movement of said inner sleeve allows a dog to exit a groove in said outer sleeve to expose said shear member to stress applied to said mandrel. ### Claim 3 (depends on 2) The tool of claim 2, wherein: said mandrel selectively locked to said outer sleeve with a shock absorber ring extending into a shock absorber groove in said outer sleeve that is wider than said shock absorber ring so that said mandrel can move, with said lock defeated, in a first direction relative to said outer sleeve to break said shear member and actuate said shock absorber with said final controlled element remaining in said first position. ### Claim 4 (depends on 3) The tool of claim 3, wherein: said mandrel is moved in a second direction opposite said first direction after said shock absorber is actuated to allow said shock absorber ring to exit said shock absorber groove in said outer sleeve to allow said mandrel to move sufficiently to enable said final controlled element to go to said second position. ### Claim 5 (depends on 3) The tool of claim 3, wherein: said shock absorber comprises at least one of a crushable ring, a stack of Belleville washers and a fluid in a cavity that is displaced through an orifice. ### Claim 6 (depends on 3) The tool of claim 3, wherein: said final controlled element comprises a plurality of gripping collets that engage a packer polished bore receptacle in said first position and release from the polished bore receptacle in said second position. ### Claim 7 (depends on 4) The tool of claim 4, wherein: said inner sleeve is driven by a hydraulic system. ### Claim 8 (depends on 7) The tool of claim 7, wherein: said movements of said inner sleeve are in the same direction. ### Claim 9 (depends on 8) The tool of claim 8, wherein: said inner sleeve is driven by a plurality of pistons. ### Claim 10 (depends on 9) The tool of claim 9, wherein: said pistons move in tandem for one of said movements while another of said movements is driven by one of said pistons. ### Claim 11 (depends on 10) The tool of claim 10, wherein: said plurality of pistons comprise a primary and a secondary annular pistons; said primary piston comprises a travel stop; said lock is defeated when said primary piston travel stop engages said mandrel. ### Claim 12 (depends on 11) The tool of claim 11, wherein: said primary piston drives said secondary piston against said inner sleeve in a first direction when said hydraulic system is pressurized until said stop is engaged by said mandrel. ### Claim 13 (depends on 12) The tool of claim 12, wherein: said mandrel further comprises a biased return member that contacts said primary piston for movement of said primary piston in a second direction opposite said first direction. ### Claim 14 (depends on 13) The tool of claim 13, wherein: said return member moving said primary piston in said second direction after said primary piston has moved in said first direction and pressure is removed from said hydraulic system. ### Claim 15 (depends on 14) The tool of claim 14, wherein: said return member moving said primary piston to a location where it is disabled from further movement in said first direction with said hydraulic system. ### Claim 16 (depends on 14) The tool of claim 14, wherein: movement of said primary piston in said second direction by said return member also induces movement of said secondary piston in said second direction. ### Claim 17 (depends on 14) The tool of claim 14, wherein: said hydraulic system moving said secondary piston in said first direction with said primary piston disabled from movement to shift said inner sleeve to enable movement of said final controlled element to said second position.