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Résultats pour
brevets
1.
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TOOL AND METHOD FOR VERIFICATION OF PRESSURE INTEGRITY BEHIND DOWNHOLE CASING
Numéro d'application |
NO2021050101 |
Numéro de publication |
2021/210990 |
Statut |
Délivré - en vigueur |
Date de dépôt |
2021-04-16 |
Date de publication |
2021-10-21 |
Propriétaire |
EXEDRA AS (Norvège)
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Inventeur(s) |
- Pedersen, Bernt Reinhardt
- Skillingstad, Torger
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Abrégé
There is disclosed a method for testing the pressure integrity of a barrier in an annulus outside a pipe string in a wellbore, the method including the steps of: - establishing a fluid connection between an inside of the pipe string and an annulus out-side the pipe string at a first position and second positions in the wellbore, the second position being offset from the first position along the axial direction of the wellbore; - establishing a temporary barrier between the fluid connections at the first and second positions in the wellbore; - establishing a pressure differential across the temporary barrier; - releasing a tracer from below the temporary barrier; and - sniffing for tracer above the temporary barrier to verify a leakage through the temporary barrier and/or the barrier in the annulus. There is also disclosed a tool for executing such a method.
Classes IPC ?
- E21B 47/098 - Localisation ou détermination de la position d'objets dans les trous de forage ou dans les puits; Identification des parties libres ou bloquées des tubes utilisant des garnitures d'empreinte, p.ex. pour détecter des enfoncements ou des perforations
- E21B 47/117 - Détection de fuites, p.ex. du tubage, par test de pression
- E21B 47/11 - Localisation des fuites, intrusions ou mouvements du fluide utilisant la radioactivité
- E21B 47/005 - Surveillance ou contrôle de la qualité ou du niveau de cimentation
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2.
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PLUG, SYSTEM AND METHOD FOR TESTING THE INTEGRITY OF A WELL BARRIER
Numéro d'application |
NO2018050003 |
Numéro de publication |
2018/128549 |
Statut |
Délivré - en vigueur |
Date de dépôt |
2018-01-05 |
Date de publication |
2018-07-12 |
Propriétaire |
EXEDRA AS (Norvège)
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Inventeur(s) |
Pedersen, Bernt Reinhardt
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Abrégé
A system (1') for testing the integrity of a well barrier (2), the system (1') comprising: - a well (10) including a wellbore (4) and a upper wellbore termination means (8), such as a wellhead; - a mud circulation system (70) and/or a mud conditioning system (80) comprising means for transporting, cleaning or storing mud outside said wellbore (4); - a barrier (2) provided in the wellbore (4), the barrier having an upstream side (12) below the barrier (2) and a downstream side (14) above the barrier (2); - a tracer (16); - a storage means (18) for storing said tracer (16), the storage means (18) being provided in a lower part of the barrier (2) and/or below the barrier (2) in the well (10); and - a release mechanism for releasing the tracer (16) from the storage means (18), wherein the system (1') further comprises a detector (20) for detecting tracer (16) that has leaked through the barrier (2) and into said mud (5), the detector (20) being arranged above the wellbore (4). There is also described a method for testing the integrity of a well barrier (2) by means of such a system (1')
Classes IPC ?
- E21B 47/117 - Détection de fuites, p.ex. du tubage, par test de pression
- E21B 47/11 - Localisation des fuites, intrusions ou mouvements du fluide utilisant la radioactivité
- G01M 3/28 - Examen de l'étanchéité des structures ou ouvrages vis-à-vis d'un fluide par utilisation d'un fluide ou en faisant le vide par mesure du taux de perte ou de gain d'un fluide, p.ex. avec des dispositifs réagissant à la pression, avec des indicateurs de débit pour soupapes
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