Types of Rigs: Everything About Offshore Rigs

Around the world, there are 1,470 offshore oil rigs. 

Offshore drilling has become popular because it reaches oil that’s impossible to reach from the land. To reach different areas of the environment, many types of rigs now exist. The variation in each rig’s design comes from the kind of challenge it’ll face in the area it’ll be drilling in. 

Types of Rigs

The types of rigs used in offshore drilling are distinct from the kinds of oil rigs on land. Offshore rigs must be able to endure the rigors of the ocean. There are seven types of drilling rigs used in offshore drilling. 

1. Barges

Barges are flat-bottomed boats that stick to shallow water. In offshore drilling, this type of drilling rig gets oil from shallow waters. These rigs are not suitable for heavy seas or deep-water drilling. Built-in equipment on the boat serves as the housing for the operation.

2. Drill Ships

Drillships differ from barges in that they’re designed for heavier seas, and the drilling occurs through the boat. A ‘moon pool’ is in the center of the drilling ship through which the drill descends and raises. This makes the ship a vehicle and unique amongst the types of rigs. 

3. Platforms 

There are several types of oil platforms used, but they follow the same principle. These types of rigs are built on supports that anchor to the bottom of the seafloor. Multiple directional wells can be dug from them, and many have a moveable substructure that can shift position to accommodate new wells.

4. Jackups

Jackups look very similar to most offshore platforms. The difference lies in that they’re not permanently attached to the seafloor. The name describes their action, as the legs can be jacked up to move or jacked down to drill. 

5. Submersibles

Submersible drilling rigs are unique amongst the other types of rigs in that they’re designed to go underwater. This barge-like drilling rig can lower its hull under the water using extensions. They are designed to work in deeper water than traditional barges and are more stable. 

6. Semisubmersible

This type of rig is usually extensive and requires towing to reach their destination. Semisubmersible drilling rigs have cranes, hoists, helipads, and living quarters. Once pulled into position, they set up and lower their floater pontoons under the water to stabilize drilling. 

7. Floaters

Floaters are drilling rigs that float on the surface of the water. They require special equipment to stabilize the drilling rig and protect it from the waves. These rigs can easily move from location to location. 

Offshore Oil Rigs

As more drilling is done offshore, industries that cater to oil and gas drilling must adapt to their customer’s needs. Kor-Pak Corporation can service and provide equipment as well as repair to any of the various types of oil rigs.

No matter what types of rigs you use, using the proper equipment and keeping it in good condition is essential to safeguard the lives of those who work on these offshore oil rigs. 

Contact us today to see how we can help your business.

Posted in Industrial Equipment.