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(12) Patent: | (11) CA 2431604 |
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(54) English Title: | A METHOD OF CIRCULATING THROUGH A RECIPROCATING DOWNHOLE TUBING PUMP AND A RECIPROCATING DOWNHOLE TUBING PUMP |
(54) French Title: | METHODE DE CIRCULATION PAR POMPE ALTERNATIVE DE FOND ET POMPE ALTERNATIVE DE FOND |
Status: | Expired and beyond the Period of Reversal |
(51) International Patent Classification (IPC): |
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(72) Inventors : |
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(73) Owners : |
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(71) Applicants : |
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(74) Agent: | NATHAN V. WOODRUFFWOODRUFF, NATHAN V. |
(74) Associate agent: | |
(45) Issued: | 2006-06-06 |
(22) Filed Date: | 2003-06-10 |
(41) Open to Public Inspection: | 2004-12-10 |
Examination requested: | 2004-11-29 |
Availability of licence: | N/A |
Dedicated to the Public: | N/A |
(25) Language of filing: | English |
Patent Cooperation Treaty (PCT): | No |
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(30) Application Priority Data: | None |
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A method of circulating through a reciprocating downhole tubing pump and a reciprocating downhole tubing pump. The reciprocating downhole tubing pump has a standing valve assembly and a travelling valve. The method involves displacing and disabling, without removing, the standing ball valve assembly and the travelling valve. This can be done with pins which knock the balls out of position or by enclosing the balls in cages which can be mechanically moved out of position with linkages. With the standing ball valve assembly and the travelling valve disabled, circulation can occur through the reciprocating downhole tubing pump. This has a number of advantages, such as removal of blockages due to sand accumulation.
Méthode de circulation par pompe alternative de fond et pompe alternative de fond connexe. La pompe alternative de fond comporte un ensemble de clapet fixe et un clapet de refoulement. La méthode comprend le déplacement et l'invalidation - sans les retirer - de l'ensemble de clapet fixe et du clapet de refoulement. Cela peut se faire à l'aide de tiges qui neutralisent les billes en les mettant hors position ou en emprisonnant les billes dans des cages qui peuvent être mises hors position mécaniquement à l'aide de liens. Une fois l'ensemble de clapet fixe et le clapet de refoulement invalidés, la circulation peut se faire dans la pompe alternative de fond. Cela comporte un certain nombre d'avantages, comme le retrait des blocages attribuables à l'accumulation de sable.
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.
2024-08-01:As part of the Next Generation Patents (NGP) transition, the Canadian Patents Database (CPD) now contains a more detailed Event History, which replicates the Event Log of our new back-office solution.
Please note that "Inactive:" events refers to events no longer in use in our new back-office solution.
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Description | Date |
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Time Limit for Reversal Expired | 2018-06-11 |
Letter Sent | 2017-06-12 |
Appointment of Agent Requirements Determined Compliant | 2011-04-26 |
Inactive: Office letter | 2011-04-26 |
Inactive: Office letter | 2011-04-26 |
Revocation of Agent Requirements Determined Compliant | 2011-04-26 |
Appointment of Agent Requirements Determined Compliant | 2008-01-02 |
Inactive: Office letter | 2008-01-02 |
Revocation of Agent Requirements Determined Compliant | 2008-01-02 |
Inactive: Office letter | 2007-12-27 |
Revocation of Agent Request | 2007-11-16 |
Appointment of Agent Request | 2007-11-16 |
Inactive: Late MF processed | 2007-10-19 |
Letter Sent | 2007-06-11 |
Inactive: Entity size changed | 2007-03-06 |
Inactive: Office letter | 2007-03-06 |
Inactive: Adhoc Request Documented | 2007-02-26 |
Reinstatement Request Received | 2007-01-31 |
Inactive: Final fee received | 2007-01-31 |
Inactive: Late MF processed | 2006-07-25 |
Letter Sent | 2006-06-12 |
Grant by Issuance | 2006-06-06 |
Inactive: Cover page published | 2006-06-05 |
Pre-grant | 2006-03-27 |
Inactive: Final fee received | 2006-03-27 |
Inactive: IPC from MCD | 2006-03-12 |
Letter Sent | 2006-02-06 |
Inactive: Single transfer | 2006-01-19 |
Letter Sent | 2005-10-18 |
Notice of Allowance is Issued | 2005-10-18 |
Notice of Allowance is Issued | 2005-10-18 |
Inactive: Approved for allowance (AFA) | 2005-10-04 |
Letter Sent | 2005-08-24 |
Reinstatement Requirements Deemed Compliant for All Abandonment Reasons | 2005-07-26 |
Amendment Received - Voluntary Amendment | 2005-07-07 |
Deemed Abandoned - Failure to Respond to Maintenance Fee Notice | 2005-06-10 |
Letter Sent | 2005-05-26 |
Inactive: Single transfer | 2005-05-11 |
Inactive: S.29 Rules - Examiner requisition | 2005-01-13 |
Inactive: S.30(2) Rules - Examiner requisition | 2005-01-13 |
Inactive: First IPC assigned | 2004-12-14 |
Application Published (Open to Public Inspection) | 2004-12-10 |
Inactive: Cover page published | 2004-12-09 |
Letter sent | 2004-12-06 |
Letter Sent | 2004-12-06 |
Advanced Examination Determined Compliant - paragraph 84(1)(a) of the Patent Rules | 2004-12-06 |
Request for Examination Received | 2004-11-29 |
Request for Examination Requirements Determined Compliant | 2004-11-29 |
Inactive: Advanced examination (SO) fee processed | 2004-11-29 |
All Requirements for Examination Determined Compliant | 2004-11-29 |
Inactive: Advanced examination (SO) | 2004-11-29 |
Inactive: First IPC assigned | 2003-08-11 |
Inactive: Filing certificate - No RFE (English) | 2003-07-14 |
Filing Requirements Determined Compliant | 2003-07-14 |
Application Received - Regular National | 2003-07-14 |
Abandonment Date | Reason | Reinstatement Date |
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2007-01-31 | ||
2005-06-10 |
The last payment was received on 2005-07-26
Note : If the full payment has not been received on or before the date indicated, a further fee may be required which may be one of the following
Please refer to the CIPO Patent Fees web page to see all current fee amounts.
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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931289 ALBERTA LTD. |
931285 ALBERTA LTD. |
Past Owners on Record |
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BRADLEY GERALD BURNS |
STACY JAMES WALKER |
WENDALL WAYNE ELFORD |