According to different sonic drill rig manufacturers, there are specific types of offshore oil rigs that are made to work in different locations and also in differing environments, such as the following:
These drilling structures are mobile, you can move them with bottom supports. They can come with columnar legs or open-truss in support of the hull area or main deck.
Unlike Jackups, platforms can’t be moved. They are immobile and it is typical of them to use cement or steel. Most of the time they are utilized for developing new wells.
Sometimes called as semisubmersibles drilling units. They are able to remain afloat offshore by making use of hollow columns or via gigantic-sized pontoons. When they are filled with water they can partially submerge to the desired depth. This type of rig is ideally used in rough seas. They are also well applied in drilling new wells.
Drilling Rig According to Sonic Drill Rig Manufacturers
How do we really get ourselves a clearer picture of a drilling rig? These drilling rigs mostly rely on a number of primary systems so that they can get the job done:
- The hoisting system. It is sometimes referred to as drawwork or derrick.
- A drive group will have several other elements such as motors, compounds, and chains
- A circulating system of pumps, return lines, drill string, kelly, and pits.
- Well control equipment
When drilling for a well, we are doing so for a variety of reasons and purposes. We call it exploratory if we are trying to find a new reservoir. We also have development wells, and they usually are sited in proven oil fields. Such projects maximize oil production from that region.
Now as for the technique used in drilling, the most common of which is the rotary drilling. This method of drilling involves the use of a rotating drill bit that is forced downward into the ground to make a wellbore or a hole. It is rotated by the drill stem to which it is attached to, and at the same time, it also serves as the passageway for the drilling fluid (mud usually).
If you hear something about an upcoming drilling project that will be carried out the traditional way, that means to say that drilling will be done straight down to the level of the oil.
There is no guarantee or level of assurance to count on that conventional drilling will always yield for you the best results. Most of the time what happens is the project handler or the driller will bore a hole downward. And then at one point, he will need to make a sharp turn, horizontally. This type of work usually necessitates special drill bits.
There are occasions also that two wellbores are drilled, each one would be in just close proximity to each other. From above, steam would be injected into the overhead hole. This will force the oil to head itself into the lower hole, allowing greater ease during the oil extraction phase.
As for the directional or slant drilling, this happens when the bit is heading down at an angle. The underlying reason we are hearing so much about this technique nowadays can be attributed to environmental concerns.
Let us take the assumption that your upcoming drilling project is situated in a highly sensitive area. The best course of action you can take on here is to drill at an angle until you are certain that you are underneath the sensitive area. This will allow you to get to the oil without having to cause any disruption to the surrounding environment.
In order to maximize your expected production from a reservoir, you may drill at multiple angled holes from just one rig. Considering the types of technology and pieces of equipment that we have today, it is safe to say they allow us to execute seamlessly a very precise directional drilling.