Some of the information on this Web page has been provided by external sources. The Government of Canada is not responsible for the accuracy, reliability or currency of the information supplied by external sources. Users wishing to rely upon this information should consult directly with the source of the information. Content provided by external sources is not subject to official languages, privacy and accessibility requirements.
Any discrepancies in the text and image of the Claims and Abstract are due to differing posting times. Text of the Claims and Abstract are posted:
(12) Patent: | (11) CA 2197584 |
---|---|
(54) English Title: | WELLHEAD ASSEMBLY |
(54) French Title: | DISPOSITIF DE TETE DE PUITS |
Status: | Expired |
(51) International Patent Classification (IPC): |
|
---|---|
(72) Inventors : |
|
(73) Owners : |
|
(71) Applicants : |
|
(74) Agent: | |
(74) Associate agent: | |
(45) Issued: | 1998-07-07 |
Reissued: | 2000-05-16 |
(22) Filed Date: | 1997-02-14 |
(41) Open to Public Inspection: | 1997-04-25 |
Examination requested: | 2000-04-06 |
Availability of licence: | N/A |
(25) Language of filing: | English |
Patent Cooperation Treaty (PCT): | No |
---|
(30) Application Priority Data: | ||||||
---|---|---|---|---|---|---|
|
The tubing head adapter, blow-out preventer ("BOP") housing and flow tee of a wellhead Christmas tree are integrated to provide a unitary, integral structure forming a vertical bore. From the bottom up, the structure comprises: a tubing head adapter bottom connection, studded or flanged, for connecting with the flanged top connection of the tubing head; a BOP housing forming side openings communicating with the bore, for receiving the ram components of a blow-out preventer; a flow tee section forming at least one side opening communicating with the bore, for producing well fluid; and a tubing head adapter top connection for connecting with the balance of the Christmas tree. By incorporating the BOP housing and flow tee into the tubing head adapter and eliminating threaded connections, the length of the three components can be reduced up to 50% and structural strength is improved.
L'adaptateur de la tête de colonne de production, l'enveloppe du bloc obturateur de puits (« BOP ») et le raccord en T d'un arbre de Noël d'une tête de puits sont intégrés pour offrir une structure unitaire et intégrale formant un trou vertical. De bas en haut, la structure comprend : un raccord inférieur d'un adaptateur de tête de colonne, clouté ou à bride, destiné à être raccordé avec le raccord à bride supérieur de la tête de colonne de production; une enveloppe de BOP formant des ouvertures latérales communiquant avec le trou, pour recevoir les composants de la mâchoire d'un bloc obturateur de puits; une section de raccord en T formant au moins une ouverture latérale communiquant avec le trou, pour produire le liquide de forage; et un raccord supérieur d'un adaptateur de tête de colonne de production, destiné à être raccordé avec l'équilibrage de l'arbre de Noël. En intégrant l'enveloppe du BOP et le raccord en T dans l'adaptateur de la tête de colonne de production et en éliminant les raccords filetés, la longueur des trois composantes peut être réduite de 50 % au plus et la résistance structurelle est améliorée.
Note: Claims are shown in the official language in which they were submitted.
Note: Descriptions are shown in the official language in which they were submitted.
For a clearer understanding of the status of the application/patent presented on this page, the site Disclaimer , as well as the definitions for Patent , Administrative Status , Maintenance Fee and Payment History should be consulted.
Title | Date |
---|---|
Forecasted Issue Date | 1998-07-07 |
(22) Filed | 1997-02-14 |
(41) Open to Public Inspection | 1997-04-25 |
(45) Issued | 1998-07-07 |
Examination Requested | 2000-04-06 |
Reissued | 2000-05-16 |
Expired | 2017-02-14 |
There is no abandonment history.
Fee Type | Anniversary Year | Due Date | Amount Paid | Paid Date |
---|---|---|---|---|
Registration of a document - section 124 | $100.00 | 1998-09-01 | ||
Maintenance Fee - Patent - New Act | 2 | 1999-02-15 | $100.00 | 1998-12-07 |
Reissue a patent | $800.00 | 1999-11-23 | ||
Maintenance Fee - Patent - New Act | 3 | 2000-02-14 | $100.00 | 2000-01-12 |
Request for Examination | $400.00 | 2000-04-06 | ||
Final Fee | $300.00 | 2000-04-06 | ||
Application Fee | $300.00 | 2000-04-06 | ||
Maintenance Fee - Patent - New Act | 4 | 2001-02-14 | $100.00 | 2001-01-29 |
Maintenance Fee - Patent - New Act | 5 | 2002-02-14 | $150.00 | 2002-01-28 |
Maintenance Fee - Patent - New Act | 6 | 2003-02-14 | $150.00 | 2003-02-11 |
Maintenance Fee - Patent - New Act | 7 | 2004-02-16 | $200.00 | 2004-02-10 |
Maintenance Fee - Patent - New Act | 8 | 2005-02-14 | $200.00 | 2005-01-13 |
Maintenance Fee - Patent - New Act | 9 | 2006-02-14 | $200.00 | 2006-01-03 |
Maintenance Fee - Patent - New Act | 10 | 2007-02-14 | $250.00 | 2007-01-02 |
Maintenance Fee - Patent - New Act | 11 | 2008-02-14 | $250.00 | 2008-02-04 |
Maintenance Fee - Patent - New Act | 12 | 2009-02-16 | $250.00 | 2009-02-05 |
Maintenance Fee - Patent - New Act | 13 | 2010-02-15 | $250.00 | 2009-12-29 |
Maintenance Fee - Patent - New Act | 14 | 2011-02-14 | $250.00 | 2010-12-29 |
Maintenance Fee - Patent - New Act | 15 | 2012-02-14 | $450.00 | 2012-01-11 |
Maintenance Fee - Patent - New Act | 16 | 2013-02-14 | $450.00 | 2013-01-21 |
Maintenance Fee - Patent - New Act | 17 | 2014-02-14 | $450.00 | 2014-02-07 |
Maintenance Fee - Patent - New Act | 18 | 2015-02-16 | $450.00 | 2015-01-30 |
Maintenance Fee - Patent - New Act | 19 | 2016-02-15 | $450.00 | 2016-01-28 |
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
---|
STREAM-FLO INDUSTRIES LTD. |
Past Owners on Record |
---|
FARQUHARSON, KEITH D. |
LAM, TONY M. |