Casing hanger system with capture feature
AssigneeABB Vetco Gray Inc.
InventorAmin Radi
Life of this patent
Estimating the term…
Abstract
A stacking arrangement for wellhead tubular members wherein the adjoining ends of the tubular members are specially shaped to prevent or limit outward radial deflection and the damage associated therewith. A casing hanger is provided with an upper longitudinal end having an inwardly sloped inner bearing surface and an inwardly sloped outer bearing surface. An outwardly sloped engagement surface adjoins the two bearing surfaces and is designed to be captured radially within a complimentary shaped surface on a running tool or other engaging member landed atop the casing hanger. A grooved section is provided to assist removal of trash from the upper end of the casing hanger.
Claims15
A casing hanger comprising:
- a generally tubular body that encloses a central bore, the body having upper and lower longitudinal ends;
- the upper end presenting a landing surface for receiving a running tool, the landing surface having:
- an inner bearing surface that is inwardly sloped;
- an outer bearing surface that radially surrounds that inner bearing surface;
- and
- an engagement surface that adjoins both the inner and outer bearing surfaces, and faces outwardly for contact with the running tool to limit outward deflection of the upper end of the casing hanger.
A casing hanger comprising:
- a generally tubular body that encloses a central bore, the body having upper and lower longitudinal ends;
- the upper end presenting a landing surface having:
- an inner bearing surface that is inwardly sloped;
- an outer bearing surface that radially surrounds that inner bearing surface;
- and
- an engagement surface that adjoins both the inner and outer bearing surfaces, the engagement surface having an outward slope;
- and
- wherein the outer bearing surface is inwardly sloped.
A casing hanger assembly within a wellbore comprising:
- a casing hanger comprising a generally tubular body that encloses a central bore, the body having upper and lower longitudinal ends the upper end presenting a landing surface having an inner bearing surface that is inwardly sloped, an outer bearing surface that radially surrounds that inner bearing surface, and an engagement surface that adjoins both the inner and outer engagement surfaces, the engagement surface having an outward slope;
- and
- an upper engaging member for selective engagement of the casing hanger, the upper engaging member comprising a lower engagement surface having an annular gripping portion for engaging the engagement surface of the casing hanger.
A casing hanger assembly within a wellbore comprising:
- a casing hanger comprising a generally tubular body, the body having upper and lower longitudinal ends the upper end presenting a landing surface having an inner bearing surface that is inwardly sloped, an outer bearing surface that radially surrounds that inner bearing surface, the outer bearing surface being inwardly sloped, and an engagement surface that adjoins both the inner and outer engagement surfaces, the engagement surface having an outward slope;
- and
- an upper engaging member for selective engagement of the casing hanger, the upper engaging member comprising a lower engagement surface having an annular gripping portion for engaging the engagement surface of the casing hanger.
Dependencies are inferred from the claim text.