Open-hole mechanical packer with external feed through and racked packing system

Patent metadata

Field	Value
Publication number	US-10364641-B2
Application number	US-201715722160-A
Country	US
Kind code	B2
Filing date	Oct 2, 2017
Priority date	Oct 2, 2017
Publication date	Jul 30, 2019
Grant date	Jul 30, 2019

Abstract

A mechanically-set packer system for use in a wellbore may include a packer assembly. The packer assembly may include a first ring and a second ring. The packer assembly may also include a packing element positioned between the first ring and the second ring. The packer system may include a mandrel having an interior and an exterior. The packer assembly may be configured to slide onto the exterior of the mandrel. The packer system may further include a line configured to run between the exterior of the mandrel and an interior of the packing element.

First claim

What is claimed is:

1. A mechanically-set packer system for use in a wellbore, the mechanically-set packer system comprising:
a packer assembly including:
a first ring and a second ring, wherein the first ring is a first inner groove ring and wherein the second ring is a second inner groove ring;
a packing element positioned between the first ring and the second ring;
a first outer grooved ring and a second outer grooved ring, wherein the first inner groove ring and the second inner groove ring are positioned between the first outer grooved ring and the second outer grooved ring;
a first keyed inner wedge ring and a second keyed inner wedge ring, wherein the first outer grooved ring and the second outer grooved ring are positioned between the first keyed inner wedge ring and the second keyed inner wedge ring;
a mandrel having an interior and an exterior, wherein the packer assembly is configured to slide onto the exterior of the mandrel;
a line configured to run between the exterior of the mandrel and an interior of the packing element; and
wherein the first keyed inner wedge ring and the second keyed inner wedge ring each include a keyed opening that enable the packer assembly to slide off the mandrel.

2. The system of claim 1 , wherein the packer assembly further includes a first wedge C-ring and a second wedge C-ring, wherein the first keyed inner wedge ring and the second keyed inner wedge ring are positioned between the first wedge C-ring and a second wedge C-ring.

3. The system of claim 1 , wherein the packer assembly further includes a keyed gauge ring, wherein the keyed gauge ring includes a keyed opening that enables the packer assembly to slide off the mandrel.

4. The system of claim 1 , further comprising a longitudinal recess in the exterior of the mandrel, the longitudinal recess configured to receive the line therein.

5. The system of claim 1 , further comprising a cover positioned over at least a portion of the line positioned between the exterior of the mandrel and the interior of the packing element.

6. The system of claim 5 , wherein the cover includes a metallic material, an elastomeric material, a thermoplastic material, or a combination thereof.

7. The system of claim 1 , wherein the packer assembly is configured to be mechanically set within an open-hole wellbore.

8. The system of claim 1 , wherein the packing element includes a cut to enable the line to be installed within the inner diameter of the packing element sub-assembly after the packing element sub-assembly is assembled.

9. The system of claim 1 , wherein the line is a pneumatic line, an electrical line, or an optical line.

10. The system of claim 1 , further comprising a housing having an exterior and an interior, the interior of the housing positioned on a portion of the exterior of the mandrel, wherein the line passes through a groove within the housing from the interior of the housing to the exterior of the housing.

11. The system of claim 1 , wherein the mandrel includes a first end and a second end, and wherein the line includes no splices between the first and the second end.

12. The system of claim 1 , wherein the packer assembly is assembled at a well site.

13. A method comprising:
positioning a line within a packer assembly through a cut completely through a packing element of the packer assembly, an interior surface of the packing element being positioned on an exterior of a mandrel;
actuating the packer assembly and isolating a first portion of the wellbore from a second portion of a wellbore, the packer assembly including a first ring, a second ring, and the packing element being positioned between the first ring and the second ring;
communicating through the line within the packer assembly, the line positioned between the interior surface of the packing element and the exterior of the mandrel.

14. The method of claim 13 , wherein actuating the packer assembly includes mechanically setting the packer assembly within an open-hole wellbore, wherein setting the packing element forms a seal with the line, the mandrel, and a wall of the open-hole wellbore.

15. The method of claim 13 , wherein actuating the packer assembly includes applying weight-set compression, hydraulic-set compression, or hydrostatic-set compression to the packing element.

16. A packing element sub-assembly system including:
a mandrel;
at least one wedge C-ring positioned on the mandrel;
at least one keyed wedge ring positioned on the mandrel;
at least one inner wedge ring key, the at least one inner wedge ring key configured to be inserted to a gap in the at least one keyed wedge ring;
a packing element having an interior and an exterior positioned on the mandrel, the at least one keyed wedge ring positioned between the at least one wedge C-ring and the packing element; and
a feedline within the interior of the packing element, wherein the feedline is positioned between an exterior of the mandrel and the interior of the packing element.

17. The system of claim 16 , further comprising:
at least one keyed gauge ring positioned on the mandrel, the at least one keyed gauge ring being positioned outside of the at least one wedge C-ring with respect to the packing element;
at least one gauge ring key, the at least one gauge ring key configured to be inserted into a gap in the at least one keyed gauge ring;
at least one outer grooved C-ring positioned on the mandrel; and
at least one inner grooved C-ring positioned on the mandrel, the at least one inner grooved C-ring being positioned between the packing element and the at least one outer groove C-ring and the at least one outer grooved C-ring being positioned between the at least one inner grooved C-ring and the at least one keyed wedge ring.

Assignees

• Baker Hughes A Ge Co Llc

Inventors

• Carmody Michael
• Frazee Clifford T
• Krueger Matthew
• Maenza Frank

Classifications

• E21B33/1285 Primary

  by fluid pressure · CPC title

• E21B17/023

  Arrangements for connecting cables or wirelines to downhole devices · CPC title

• E21B33/1208

  characterised by the construction of the sealing or packing means (E21B33/1277 takes precedence) · CPC title

• E21B23/06 Primary

  for setting packers · CPC title

• E21B33/122

  Multiple string packers · CPC title