Variable guide and protection bushing for well conveyance

A variable guide and protection bushing assembly for guiding a string of components to a cable hanger sealing surface disposed in a well production system, the well production system having an intervention member installed thereon, the assembly mountable to the well production system and comprising:

• a body having a central axis, a first end, a second end, an outer surface, and an inner through passage, wherein the outer surface at the second end is configured to be coupled to the production system;
• an annular cavity disposed in and coaxial with the body, the annular cavity forming a cylindrical surface having a shoulder, and a larger diameter than a diameter of the inner through passage;
• a piston disposed in the annular cavity, the piston in fluid communication with an annulus line of the production system and coupled to a biasing member, and the biasing member being coupled to the shoulder;
• and
• a plurality of protective elements extending from the piston and into the production system.

A variable guide and protection bushing assembly for guiding a string of components to a cable hanger sealing surface disposed in a well production system, the well production system having an intervention member installed thereon, the assembly mountable to the well production system and comprising:

• a body having a central axis, a first end, a second end, an outer surface, and an inner through passage, wherein the outer surface at the second end is configured to be coupled to the production system;
• and
• a plurality of nozzle jets disposed circumferentially about and radially directed toward the central axis;
• wherein the nozzle jets are in fluid communication with an annulus line of the production assembly.

A variable guide and protection bushing assembly for guiding a string of components to a cable hanger sealing surface disposed in a well production system, the well production system having an intervention member installed thereon, the assembly mountable to the well production system and comprising:

• a body having a central axis, a first end, a second end, an outer surface, and an inner through passage, wherein the outer surface at the second end is configured to be coupled to the production system;
• a plurality of centering disks having a plurality of flexible flaps disposed circumferentially about and facing the central axis;
• and
• a plurality of annular spacers;
• wherein each centering disk is alternatively stacked on each annular spacer;
• wherein the flaps move axially up and down in response to a component of the string of components passing therethrough;
• wherein the flaps maintain contact with the component of the string of components as the component passes therethrough.

A variable guide and protection bushing assembly for guiding a string of components to a cable hanger sealing surface disposed in a well production system, the well production system having an intervention member installed thereon, the assembly mountable to the well production system and comprising:

• a body having a central axis, a first end, a second end, an outer surface, and an inner through passage, wherein the outer surface at the second end is configured to be coupled to the production system;
• a protective sleeve having a diameter and disposed in and coaxial with the production system;
• a biasing member coupled to the protective sleeve;
• wherein the protective sleeve is configured to cover the cable hanger sealing surface when the protective sleeve and the biasing member are in an unactuated state, and expose the cable hanger sealing surface when the protective sleeve and the biasing member are in an actuated state;
• wherein the protective sleeve and the biasing member are actuated by axial movement of a cable hanger having a diameter larger than the diameter of the protective sleeve;
• wherein the biasing member is configured to compress until the cable hanger is aligned with and engaging the cable hanger sealing surface.

A variable guide and protection bushing assembly for guiding a string of components to a cable hanger sealing surface disposed in a well production system, the well production system having an intervention member installed thereon, the assembly mountable to the well production system and comprising:

• a body having a central axis, a first end, a second end, an outer surface, and an inner through passage, wherein the outer surface at the second end is configured to be coupled to the production system;
• a plurality of centering devices having a plurality of fins uniformly circumferentially and angularly spaced about the central axis;
• wherein each fin of the plurality of fins is configured to at least one of bend and flex radially outward in response to a component of the string of components passing through the corresponding centering device;
• and
• wherein the fins maintain contact with the component of the string of components as the component passes therethrough.

A variable guide and protection bushing assembly for guiding a string of components to a cable hanger sealing surface disposed in a subsea tree having a blowout preventer with a lower riser package installed thereon, the assembly comprising:

• a body mountable in the subsea tree, the body having a central axis, a first end, a second end, an outer surface, and an inner through passage;
• wherein the outer surface at the first end is configured to be coupled to the lower riser package, and the outer surface at the second end is configured to be coupled to the subsea tree;
• a cylindrical bore disposed in and coaxial with the inner through passage, the cylindrical bore forming a cylindrical surface larger in diameter than a diameter of the inner through passage;
• and
• a hydraulic connection between a hydraulically actuatable support element disposed in the cylindrical bore and an annular bore extending through the subsea tree, the lower riser package, and the blowout preventer.

A method of guiding a string of components to a cable hanger sealing surface disposed in a well production system, the method comprising:

• installing a variable guide and protection bushing assembly in the production system, the assembly including:
• a body having a central axis, a first end, a second end, an outer surface, and an inner through passage;
• a cylindrical cutout disposed in and coaxial with the inner through passage and forming a cylindrical surface having a larger diameter than a diameter of the inner through passage;
• and
• a variable centralizer component disposed in and coaxial with the cylindrical cutout and moveable radially inward and outward in response to a component of the string of components passing through the cylindrical cutout;
• coupling an intervention member with the outer surface at the first end;
• coupling the production system with the outer surface at the second end;
• passing components of the string into the inner through passage;
• and
• centralizing the components of the string through the inner through passage to the cable hanger sealing surface via the variable centralizer component.