CA2483244C - Vanne robinet d'arret de colonne de forage - Google Patents
Vanne robinet d'arret de colonne de forage Download PDFInfo
- Publication number
- CA2483244C CA2483244C CA2483244A CA2483244A CA2483244C CA 2483244 C CA2483244 C CA 2483244C CA 2483244 A CA2483244 A CA 2483244A CA 2483244 A CA2483244 A CA 2483244A CA 2483244 C CA2483244 C CA 2483244C
- Authority
- CA
- Canada
- Prior art keywords
- valve
- outer member
- annular
- lower portions
- valve assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000012530 fluid Substances 0.000 claims description 49
- 230000000903 blocking effect Effects 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 238000005553 drilling Methods 0.000 description 22
- 230000015572 biosynthetic process Effects 0.000 description 9
- 238000005755 formation reaction Methods 0.000 description 9
- 230000009977 dual effect Effects 0.000 description 8
- 238000005520 cutting process Methods 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 230000002706 hydrostatic effect Effects 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Pipe Accessories (AREA)
- Branch Pipes, Bends, And The Like (AREA)
- Safety Valves (AREA)
- Earth Drilling (AREA)
Abstract
Une vanne est raccordée à un train de tiges de forage pour ouvrir ou obturer un passage dans le train de tiges. La vanne comprend un élément intérieur pour ouvrir ou obturer le passage intérieur du train de tiges. Cet élément de vanne se déplace entre la position ouverte et fermée, en réponse au mouvement axial du train de tiges. Le soulèvement du train de tiges produit l'ascension de la partie supérieure par rapport à la partie inférieure, ce qui entraîne avec cette partie l'élément de la vanne, tandis que le manchon de la vanne reste fixe avec la partie inférieure, ce qui ouvre la vanne. La vanne peut comprendre une vanne annulaire pour ouvrir ou obturer le passage annulaire entourant le passage intérieur. La vanne annulaire est ouverte ou obturée en augmentant la pression dans le passage annulaire au-dessus de ladite vanne annulaire.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/677,871 | 2003-10-02 | ||
| US10/677,871 US7017682B2 (en) | 2002-12-17 | 2003-10-02 | Drill string shutoff valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2483244A1 CA2483244A1 (fr) | 2005-04-02 |
| CA2483244C true CA2483244C (fr) | 2012-05-29 |
Family
ID=34422142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2483244A Expired - Lifetime CA2483244C (fr) | 2003-10-02 | 2004-09-30 | Vanne robinet d'arret de colonne de forage |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2483244C (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050178586A1 (en) | 2004-02-12 | 2005-08-18 | Presssol Ltd. | Downhole blowout preventor |
-
2004
- 2004-09-30 CA CA2483244A patent/CA2483244C/fr not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2483244A1 (fr) | 2005-04-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |