Whipstock collet latch
AssigneeTeam Oil Tools, LP
InventorDonald W. Tinker
Life of this patent
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Abstract
A method of anchoring a whipstock on the mill or drill body using an anchor extendible to engage an eyelet formed or provided on the whipstock to run in a mill and whipstock in one trip. The anchor is retractable into the body of the drill so that the drill can pass by the whipstock during lateral drilling and out the casing wall without interference. The anchor preferably is extended and retracted by hydraulic force controlled remotely by the operator. The anchor is preferably shaped to match and conform to the outer wall of the drill so that in the closed position, the anchor is contiguous with and does not extend beyond the outer diameter of the drill body. Part of the drill body is preferably removed to allow the anchor to nest within the space provided by the removal of the drill body.
Claims20
A mill for running into a well bore comprising:
- a substantially cylindrical mill body and at least one cutting or abrading element attached to said cylindrical mill body;
- said cylindrical mill body having a recess defined therein for receiving a latch;
- said latch received within said cylindrical body recess and movably attached to said cylindrical body between an open position and a closed position.
A mill for running a whipstock into a well bore comprising:
- a substantially cylindrical mill body and at least one cutting or abrading element attached to said cylindrical mill body;
- said cylindrical mill body having a recess defined therein for receiving a latch;
- said latch received within said cylindrical body recess and movably attached to said cylindrical body between an open position and a closed position.
- a whipstock having a top and a bottom and an angled face;
- said whipstock further having a sleeve mounted along said angled face for receiving said latch;
- wherein when said latch is inserted into said whipstock sleeve, said whipstock can be run into the wellbore attached to said mill.
A method of running a whipstock into a well bore comprising:
- providing a substantially cylindrical mill body having at least one cutting or abrading element attached to said cylindrical mill body;
- providing walls on said cylindrical mill body defining a recess therein for receiving a latch;
- providing a latch rotatably attached within said cylindrical body recess;
- providing a whipstock having a top and a bottom and an angled face;
- providing said whipstock with a sleeve mounted along said angled face for receiving said latch;
- threading said latch on said mill body into said sleeve on said whipstock;
- inserting said mill body and said whipstock in said wellbore.
Dependencies are inferred from the claim text.