WO2025202873 - METHOD AND APPARATUS FOR HOLE CLEANING ENHANCEMENT
National phase entry is expected:
Publication Number
WO/2025/202873
Publication Date
02.10.2025
International Application No.
PCT/IB2025/053106
International Filing Date
24.03.2025
Title **
[English]
METHOD AND APPARATUS FOR HOLE CLEANING ENHANCEMENT
[French]
PROCÉDÉ ET APPAREIL D'AMÉLIORATION DE NETTOYAGE DE TROU
Applicants **
TEOW, Michael
Inventors
TEOW, Michael
Priority Data
63/569,228
25.03.2024
US
Application details
| Total Number of Claims/PCT | * |
| Number of Independent Claims | * |
| Number of Priorities | * |
| Number of Multi-Dependent Claims | * |
| Number of Drawings | * |
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| Pages of Specification | * |
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| Number of Office Actions | * |
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International Searching Authority |
IPOS
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| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
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| Type of Assignment |
The Standard Agent's Assignment
* |
| Applicant's Legal Status |
Natural Person
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| * | |
| * | |
| * | |
| * | |
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| Entry into National Phase under |
Chapter I
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| Patent Delivery |
Send the Letters Patent by Courier
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| Translation |
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* The data is based on automatic recognition. Please verify and amend if necessary.
** IP-Coster compiles data from publicly available sources. If this data includes your personal information, you can contact us to request its removal.
Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 2360 | |
| EPO | Filing, Examination, Granting | 11970 | |
| Japan | Filing, Examination, Granting | 2452 | |
| South Korea | Filing, Examination, Granting | 2712 | |
| USA | Filing, Examination, Granting | 5540 |
Total:
25,034
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Abstract[English]
A hole cleaning enhancement tool includes an elongated tool mandrel having a first connection on one longitudinal end and a second connection on another longitudinal end. A first stage extends along the mandrel between the first connection and one side of a center section on the mandrel. A second stage extends along the mandrel between another side of the center section and the second connection. A plurality of circumferentially spaced helical channels extends along the first stage and the second stage. The center section defines a curved profile having a largest outer diameter in a longitudinal center thereof, the longitudinal center defining a largest outer diameter along the tool mandrel. A drill string may comprise a plurality of such hole cleaning enhancement tools at spaced apart locations between pipe segments in a string of pipe segments.[French]
Un outil d'amélioration de nettoyage de trou comprend un mandrin d'outil allongé présentant un premier raccord sur une extrémité longitudinale et un second raccord sur une autre extrémité longitudinale. Un premier étage s'étend le long du mandrin entre le premier raccord et un côté d'une section centrale sur le mandrin. Un second étage s'étend le long du mandrin entre un autre côté de la section centrale et le second raccord. Une pluralité de canaux hélicoïdaux espacés de manière circonférentielle s'étend le long du premier étage et du second étage. La section centrale définit un profil incurvé présentant un diamètre externe le plus grand dans un centre longitudinal de celui-ci, le centre longitudinal définissant un diamètre externe le plus grand le long du mandrin d'outil. Un train de tiges de forage peut comprendre une pluralité de tels outils d'amélioration de nettoyage de trous à des emplacements espacés entre des segments de tuyau dans une chaîne de segments de tuyau.