Jack up drilling rig design

Jackup rigs are so named because they are self-elevating with three, four, six and even eight movable legs that can be extended (“jacked”) above or below the hull. Jackups are towed or moved under self propulsion to the site with the hull lowered to the water level, and the legs extended above the hull. The hull is actually a water-tight barge that floats on the water's surface. When the rig reaches the work site, the crew jacks the legs downward through the water and int. [pdf]

Semi submersible drilling rig design

Mobile offshore drilling units (MODU) Semi-submersible rigs make stable platforms for drilling for offshore oil and gas. They can be towed into position by a tugboat and anchored, or moved by and kept in position by their own azimuth thrusters with dynamic positioning. The International Maritime Organization. . A semi-submersible platform is a specialised used in offshore roles including as rigs, safety vessels, oil production platforms, and heavy lift cranes. They have good . The semi-submersible design was first developed for activities in the early 1960s. Bruce Collipp of is regarded as the inventor.However, . • – Consultants designers• – Consultants designers• – Info on Boskalis transport ships• – Photos of Mighty Servant 2 hauling USS Samuel B. Roberts (FFG 58) . Offshore drilling in water depth greater than around 520 metres (1,710 ft) requires that operations be carried out from a floating vessel, since. . • • • – facility used to repair and maintain ships; some are floating and can be submerged to load vessels.• – semi-submerging vessel for transportation of. [pdf]

Offshore drilling rig design

Offshore platforms have many uses including oil exploration and production, navigation, ship loading and unloading, and to support. . There are two types of offshore drilling rings/platforms. The first type is moveable offshore drilling rigs that can be moved from one place to another and the second type is the fixed rigs/platforms. . Different types of offshore oil rigs and platforms are used depending on the offshore oil/gas field water-depth and situation. Rigs are used for the drilling of the wells and platforms are installed in the field for extracting oil/gas operation. Main types of rigs and. . Drilling barges are used mostly for inland, shallow water drilling. This typically takes place in lakes, swamps, rivers, and canals. Drilling barges are. [pdf]