Abrégé

The present invention relates to an apparatus, system and method for tethering a subsea well control equipment under tension of a subsea well assembly. A tethering member (36) is arrangeable to tether the subsea well control equipment (24) to a subsea mount (34). A subsea tensioning apparatus (38) is arrangeable to tension the tethering member. The subsea tensioning apparatus comprises a chain block (C) that is configured to be coupled to the tethering member and apply a tension to the tethering member.

Classes IPC  ?

• E21B 33/035 - Têtes de puitsLeur mise en place spécialement adaptées aux installations sous l'eau
• E21B 33/064 - Obturateurs anti-éruption spécialement adaptés aux têtes de puits sous l'eau
• E21B 41/04 - Manipulateurs pour opérations sous l'eau, p. ex. reliés temporairement aux têtes de puits

Abrégé

The present invention relates to an apparatus, system and method for tethering a subsea well control equipment of a subsea well assembly under tension. A tethering member (36) is configured to tether a subsea well control equipment (24) to a subsea mount (34) arranged on a seabed. A subsea tensioning apparatus comprises a load chain (L), a first chain block (C1) having a first gear ratio, and a second chain block (C2) having a second gear ratio. The first chain block is configured to convey the load chain to apply a first tension to the tethering member. The second chain block is configured to subsequently convey the load chain to apply a second tension to the tethering member; wherein the second gear ratio is higher than the first gear ratio.

Classes IPC  ?

• E21B 33/035 - Têtes de puitsLeur mise en place spécialement adaptées aux installations sous l'eau
• E21B 33/064 - Obturateurs anti-éruption spécialement adaptés aux têtes de puits sous l'eau
• E21B 41/04 - Manipulateurs pour opérations sous l'eau, p. ex. reliés temporairement aux têtes de puits

Abrégé

The present invention relates to an apparatus, system and method for tethering a blowout preventer (BOP) of a subsea assembly under tension. The system comprising: a subsea mount arranged on a sea bed in spaced relationship to the BOP; a tethering member configured to tether the BOP to the subsea mount; a tensioning apparatus configured to apply a tension to the tethering member, wherein the tensioning apparatus comprises: a first tensioning mechanism configured to apply a first tension to the tethering member; and a second tensioning mechanism configured to subsequently apply a second tension to the tethering member, wherein the second tension is greater than the first tension.

Classes IPC  ?

• E21B 41/00 - Matériel ou accessoires non couverts par les groupes
• E21B 33/064 - Obturateurs anti-éruption spécialement adaptés aux têtes de puits sous l'eau

Abrégé

The present invention relates to an apparatus, system and method for tethering a blowout preventer (BOP) of a subsea assembly under tension. The system comprising: a subsea mount arranged on a sea bed in spaced relationship to the BOP; a tethering member configured to tether the BOP to the subsea mount; a tensioning apparatus configured to apply a tension to the tethering member, wherein the tensioning apparatus comprises: a first tensioning mechanism configured to apply a first tension to the tethering member; and a second tensioning mechanism configured to subsequently apply a second tension to the tethering member, wherein the second tension is greater than the first tension.

Classes IPC  ?

• E21B 33/035 - Têtes de puitsLeur mise en place spécialement adaptées aux installations sous l'eau
• E21B 33/038 - Connecteurs utilisés sur les têtes de puits, p. ex. pour relier l'obturateur anti-éruption et la colonne montante dans l'eau
• E21B 33/064 - Obturateurs anti-éruption spécialement adaptés aux têtes de puits sous l'eau
• E21B 41/04 - Manipulateurs pour opérations sous l'eau, p. ex. reliés temporairement aux têtes de puits
• E21B 41/10 - Colonnes de guidage, p. ex. largablesLignes de guidage fixées à des bases de guidage sous l'eau