Offshore

This article describes the Stand-by vessel (SBV) and Fast Rescue Craft (FRC) duties, equipment and standards 1. Duties The Master of the stand-by vessel shall ensure that: Portable radio sets and other life-saying equipment are maintained in good working conditions at all times. A 24-hour radio and visual watch on the rig is maintained. In Stand-by vessel duties, equipment and standards

Land rig on artificial island is one of the drilling rig concepts for offshore drilling in shallow water environments. 1. Water depth range:  0-10m.  Costs rise significantly with water depth and distance from shore. 2. The environmental impact for marine life is potentially high. Island would disappear, with time, due to wave and ice effects. Land rig on artificial island (shallow water)

Land rig on barge (with optional submerged caissons) is one of the drilling rig design concepts for offshore shallow water depth environments. Barges are a proven concept in shallow water and can operate in water depth of 1 to 4 m. With additional submerged caissons, operating range may be extended to say 1-8 m range. Land rig on barge (with optional submerged caissons)

Heli-Rig is one of the rig design concepts for shallow water environments. 1. Independent of water depth. Requires a support structure which in itself would not be helicopter transportable, and therefore could only be used with a minimum of two support structures and a leap-frog operation. 2. Proven technology, but limited drilling capability. Pumping and Heli-Rig

Posted Barge With Land Or Modular Rig is one of the rig design concepts for shallow water environments. 1. Could operate in water depth of 1 to 10 m. 2. Environmental impact potentially low. 3. Barges can be designed for ice operations. Ice management structures required to protect posts and barge. 4. Suitable for exploration. Posted Barge With Land or Modular Drilling Rig

Modularised and Pile Elevated Drilling Rig  is one of the drilling rig design concepts for shallow water environments. 1. Water depth range: 2 – 10m 2. Low environment impact. Installation and removal of piles may be complex. 3. Suitable for ice. Piles dimensions and clearance could be designed so that berms and/or ice rubble makers Modularised and Pile Elevated Drilling Rig

Drilling rig on a Steel Caisson is one of the drilling rig design concepts for offshore shallow water environments. 1. Water depth range: 5 – 100m however must be designed for a limited water depth range, unless berms are considered.  More study required to ascertain minimum water depth capability of concept with & without rig Steel Caisson and Drilling rig

Cantilever Drilling Barge  is one of the rig design concepts for shallow water environments. Water depth range: 3 – 7m Low environmental impact Suitable for ice. This is a development of the swamp barge, but nothing this big has been considered before. Not efficient for drilling single wells – primary purpose is multiple wells for Cantilever Drilling Barge

Semi-Submersible is one of the drilling rig design concepts for offshore shallow water environments. 1. Water depth range: 30 – 1000m 2. Environmental Impact low 3. Not suitable for ice 4. Suitable for exploration and development. Easily moved between locations. Rig up time, essentially zero. Wells will be sub-sea completions – more costly and may Semi-Submersible

Standard Jack-Up is one of the rig design concepts for offshore driling in shallow water environments. 1. Water depth range 10 to 120 m for standard Jack-ups Minimum draft for small jack-up is around 7 metres, which would limit access to the north Caspian Sea. 2. Environmental Impact Potentially low although dredging may be extensively Standard Jack-Up