Downhole tool, method, and system
A borehole tool, including a first section having a seal and a seal anchor, a second section attached to the first section by a joint having at least two degrees of freedom. A method for positioning and setting a downhole tool, including running a tool to a target location, setting the seal anchor, setting the seal packer, and positioning the second section by manipulating the joint. A wellbore system including a borehole in a subsurface formation, a string in the borehole, and a downhole tool, disposed within or as a part of the string.
1 . A borehole tool, comprising:
a first section having a seal and a seal anchor;
a second section attached to the first section by a ball joint having at least two degrees of freedom, the ball joint including a ball; and
a drive sub in the first section configured to drivingly engage with the ball, the drive sub being disengageable from the ball to allow the second section to flex relative to the first section to set the second section back against an opposing side of a borehole in which the tool is to be deployed.
2 . The tool as claimed in claim 1 , wherein the seal anchor includes a rotary ratchet.
3 . The tool as claimed in claim 2 , wherein the rotary ratchet includes a threaded rod and an expandable nut.
4 . The tool as claimed in claim 1 , wherein the seal anchor includes a drag block.
5 . The tool as claimed in claim 1 , wherein the first section comprises a housing having a first part that is movable relative to a second part, the first part exhibiting a first frustoconical surface and the second part exhibiting an oppositely directed second frustoconical surface, the first part and the second part becoming closer to one another upon setting of the seal anchor.
6 . The tool as claimed in claim 5 , wherein the seal anchor includes a slip cooperative with the first and second frustoconical surfaces.
7 . The tool as claimed in claim 1 , wherein a segment extends between the first section and the second section.
8 . The tool as claimed in claim 7 , wherein the segment is separable at a location along a span thereof at a releaser.
9 . The tool as claimed in claim 8 , wherein the releaser is a pin.
10 . The tool as claimed in claim 7 , wherein the second section is settable independent of the first section and settable before or after separation of the segment at the releaser.
11 . A method for positioning and setting a downhole tool, comprising:
running a tool as claimed in claim 1 to a target location;
setting the seal anchor;
setting the seal packer; and
positioning the second section by manipulating the joint.
12 . The method as claimed in claim 11 , wherein setting the seal anchor comprises rotating the tool while dragging a block of the tool thereby creating relative rotational movement between a first part of a housing of the first section and a second part of the housing of the first section.
13 . The method as claimed in claim 12 , wherein setting the seal comprises setting down weight on the seal anchor.
14 . The method as claimed in claim 13 , further comprising activating the joint with the set down weight.
15 . The method as claimed in claim 14 , further including moving the second section relative to the first section at the joint.
16 . The method as claimed in claim 15 , wherein the moving includes at least two degrees of freedom.
17 . The method as claimed in claim 13 , including separating the second section from the first section after setting the seal anchor.
18 . A wellbore system comprising:
a borehole in a subsurface formation;
a string in the borehole; and
a downhole tool as claimed in claim 1 , disposed within or as a part of the string.