Packers and methods of use
AssigneeSchlumberger Technology Corporation
InventorsChad Lucas, Oscar Rodriguez
Life of this patent
Estimating the term…
Abstract
Packers and methods of using same are described. The packer includes a packer body, a slip to engage a casing of the well and a sealing element to seal an annulus of the well, a fluid bypass chamber adapted to allow fluid passage through the packer body during run in hole and in release position, and a re-settable mandrel slideably engaged with guide pins attached to the packer body and adapted to selectively open and close circulation paths upon actuation. This abstract allows a searcher or other reader to quickly ascertain the subject matter of the disclosure. It will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).
Claims17
A packer useable with a subterranean well, comprising:
- (a) a packer body, a slip to engage a casing of the well and a sealing element to seal an annulus of the well;
- (b) the body comprising a fluid bypass chamber adapted to allow fluid passage through the packer body during run in hole and in release position;
- (c) a re-settable mandrel slideably engaged with guide pins attached to the packer body and adapted to selectively open and close the fluid bypass chamber upon actuation, wherein the mandrel is adapted to be free-spinning and auto-indexing between settings;
- and
- (d) a circulating sleeve attached above the body and adapted to direct fluid above the packer body during at least a set position.
A packer for use in a subterranean well, comprising:
- (a) a packer having a packer body, a slip to engage a casing of the well and a sealing element to seal an annulus of the well, the packer being re-settable, compression set, and straight pull release;
- (b) the body comprising a fluid bypass chamber adapted to allow fluid passage through the packer body during run in hole and in release position;
- (c) a connector for connecting the packer body to coiled tubing or jointed pipe;
- (d) a ported sub integral with the packer body and below the sealing element;
- (e) a circulating sleeve operable to cover and uncover one or more circulation ports integral with the packer body and above the sealing element;
- and
- (f) a re-settable, auto-indexing ‘J’ profile mandrel for compression-setting the packer via coiled tubing or jointed pipe without substantial rotation of the coiled tubing or jointed pipe, wherein the mandrel is free-spinning relative to internal and external components of the packer.
A method of using a packer, comprising:
- (a) running a packer to depth in a well bore on coiled tubing or jointed pipe;
- (b) equalizing pressure between an annulus and the coiled tubing or the jointed pipe during running the packer to depth;
- (c) mechanically setting the packer in the well bore employing a mandrel attached to the packer without substantial rotation of the coiled tubing or jointed pipe, wherein the mandrel is free-spinning relative to internal and external components of the packer;
- and
- (d) disturbing debris above the packer by allowing for multiple circulation paths depending on packer position, wherein disturbing comprises circulating a fluid above the packer by uncovering, with a circulating sleeve, one or more circulation ports integral with a packer body and above a sealing element of the packer.
Dependencies are inferred from the claim text.