Wellhead apparatus

Reimert, L E

Title: Wellhead apparatus

Full Record
Other Related Research

Abstract

There is disclosed apparatus for use in suspending concentric strings of casing of an offshore well at the ocean floor, wherein at least one hanger for suspending an intermediate casing string is provided with a plurality of vertically spaced, upwardly facing seating surfaces which extend radially inwardly from its bore, and the outer side of such hanger body has a recess thereabout in which a radially expandable ring having a plurality of vertically spaced, downwardly facing landing surfaces is received. As the intermediate hanger body is lowered into the bore of an outer hanger having vertically spaced, upwardly facing seating surfaces extending radially outwardly from its bore, the ring expands radially outwardly to move its landing surfaces into supported positions on the seating surfaces of the outer hanger. As an inner hanger is lowered into the bore of the intermediate hanger, landing surfaces on a radially expandible ring carried within a recess about the outer side of its body are caused to expand with the ring into supported positions on the seating surfaces of the intermediate hanger body. The seating surfaces within the bore of the intermediate hanger body and the recess about its outer side in which the expandiblemore »« less

Inventors:: Reimert, L E

Publication Date:: Tue Dec 27 00:00:00 EST 1983

OSTI Identifier:: 6841017

Patent Number(s):: US 4422507

Assignee:: Drill-Quip, Inc.

Resource Type:: Patent

Resource Relation:: Patent File Date: Filed date 8 Sep 1981; Other Information: PAT-APPL-300001

Country of Publication:: United States

Language:: English

Subject:: 02 PETROLEUM; 03 NATURAL GAS; NATURAL GAS WELLS; OFFSHORE SITES; OIL WELLS; WELLHEADS; DESIGN; POSITIONING; WELL CASINGS; WELLS; 020300* - Petroleum- Drilling & Production; 030300 - Natural Gas- Drilling, Production, & Processing

Citation Formats


                    Reimert, L E. Wellhead apparatus.  United States: N. p., 1983. 
        Web.

Copy to clipboard


                    Reimert, L E. Wellhead apparatus.  United States.

Copy to clipboard


                    Reimert, L E. 1983.  
        "Wellhead apparatus".  United States.

Copy to clipboard


                    
@article{osti_6841017,

  title        = {Wellhead apparatus},

  author       = {Reimert, L E},

  abstractNote = {There is disclosed apparatus for use in suspending concentric strings of casing of an offshore well at the ocean floor, wherein at least one hanger for suspending an intermediate casing string is provided with a plurality of vertically spaced, upwardly facing seating surfaces which extend radially inwardly from its bore, and the outer side of such hanger body has a recess thereabout in which a radially expandable ring having a plurality of vertically spaced, downwardly facing landing surfaces is received. As the intermediate hanger body is lowered into the bore of an outer hanger having vertically spaced, upwardly facing seating surfaces extending radially outwardly from its bore, the ring expands radially outwardly to move its landing surfaces into supported positions on the seating surfaces of the outer hanger. As an inner hanger is lowered into the bore of the intermediate hanger, landing surfaces on a radially expandible ring carried within a recess about the outer side of its body are caused to expand with the ring into supported positions on the seating surfaces of the intermediate hanger body. The seating surfaces within the bore of the intermediate hanger body and the recess about its outer side in which the expandible ring is received are on generally the same vertical line.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/6841017},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Tue Dec 27 00:00:00 EST 1983},

  month        = {Tue Dec 27 00:00:00 EST 1983}

}

Copy to clipboard

Patent:

Search for the full text at the U.S. Patent and Trademark Office

Save / Share:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

Wellhead apparatus

Patent Reimert, L

There are disclosed two embodiments of wellhead apparatus for use in suspending concentric strings of casing of an offshore well at the ocean floor. For this purpose, an inner hanger to which the inner casing is connected is adapted to be landed within an outer hanger to which the outer casing is connected, each at the ocean floor or ''mudline''. Seating surfaces are formed on the bore of the tubular body of the outer hanger body, and landing surfaces are formed on a circumferentially split landing ring arranged about the tubular body of the inner hanger and having landing surfacesmore »« less
Well apparatus

Patent Akkerman, N

This patent describes, for use in landing a well tool within a selected one of a plurality of vertically spaced landing nipples of a well conduit connected as part of a well string, wherein each nipple has a cylindrical bore of the same diameter as the others and a groove having an upwardly facing seat thereabout, a well apparatus comprising a wire line running tool, a landing tool connectible to the running tool for raising and lowering therewith within the well string, keys each having a downwardly facing shoulder and carried by the landing tool for radial movement between innermore »« less
Holddown mechanism for a tubing hanger in a wellhead

Patent Diehl, R

A wellhead assembly comprises: a head member adapted to support at least one well casing, said head member haivng an axial bore and a plurality of spaced apart threaded passages extending generally horizontally from the outer surface of said head member to the bore thereof; a hanger bowl supported in the bore of said head member and having a plurality of generally horizontal passages axially aligned with the respective passages of said head member, the passages of said hanger bowl extending from the outside surface of the bowl to a bore thereof; a tubing hanger supported in the bore ofmore »« less
Mudline casing hanger

Patent Milberger, L; Baron, D; Berner, P

This patent describes a mudline casing hanger assembly for supporting a casing string within and from an outer tubular member. The mudline casing hanger consists of: 1.) an outer tubular member, the inner surface having a first recess, and an upwardly facing load carrying shoulder at an upper elevation, and an adjacent second recess at a lower elevation; 2.) an inner cylindrical casing hanger body, a downwardly facing shoulder around a substantial portion of the periphery, a first reduced diameter portion below the load shoulder, a second lesser diameter reduced diameter portion below the first diameter portion, an outwardly extendingmore »« less
Unitized wellhead system

Patent Watkins, B

A unitized wellhead system is described, comprising a wellhead housing having a bore there through with a seat about the bore and vertically spaced upper, intermediate and lower side outlets from the bore above the seat, a first hanger mandrel adapted to land in the housing bore above the seat for suspending a first casing therefrom, means for sealing between the first casing hanger mandrel and the bore of the housing between the intermediate and lower outlets so as to fluidly connect the lower outlet with the annulus between the first casing and an outer casing, a second hanger mandrelmore »« less

Similar Records