A complete video of the operation of underwater and amphibious submersible drilling rigs

When was the first submersible rig used in the Gulf of Mexico?

In 1961, Shell Oil successfully converted an existing submersible rig Blue Water Rig No.1 into the first semi submersible drilling unit for operation in the Gulf of Mexico when it was found to have good stability and motions whilst being towed at a partial draught.

What is a submersible rig?

Submersibles, as they are known informally, operate in relatively shallow water, since they must rest on the sea floor. Other floating vessel types are used in deeper water depths. The term Mobile Offshore Drilling Unit (MODU) is generally used for all offshore drilling rigs that can be moved from location to location.

Who built the first submersible drilling rig?

Alden J. Laborde designed and constructed the first purpose-built V-shaped semi-submersible drilling rig, Ocean Driller, delivered in 1963. ^ "Oilfield Glossary : submersible drilling rig".

How does a submersible drilling platform work?

The submersible drilling platform is supported on large pontoon -like structures. These pontoons provide buoyancy allowing the unit to be towed from location to location. Once on the location, the pontoon structure is slowly flooded until it rests securely on its anchors, of which there are usually two per corner.

What was the first offshore mobile drilling rig?

The first offshore mobile drilling platform was the Hayward-Barnsdall Breton Rig 20, first operated in 1949. This rig had evolved from the inland drilling barges which were used to drill in marshes and protected waters in up to 10 feet of water. The Breton Rig 20 was 160 feet by 85 feet, and could work in 20 feet water depth.

How to set up a drilling rig?

Before drilling, the site must be carefully chosen. Then the land is prepared and access roads should also be built. A reserve pit must also be dug on the ground for the disposing of mud and rock. The next step is arranging the rig equipment. When the rig is complete set up, workers can begin the drilling operation. 2. Drilling Rig Tour