Coiled tubing was developed in 1970s and is one of the most important pieces of well intervention equipment in the oil and gas industry. There are several different types of it available in the industry market with several different designs of a coiled tubing unit; however, the components of a coiled tubing unit are very similar. The main differences are performance capabilities and hydraulic power control systems. This article will give an overview of the essential components of a coiled tubing unit. (Read about the history of coiled tubing here –Introduction to Coiled Tubing (CT) in Oil and Gas)
Figure 1 shows the mounted truck coiled tubing unit, which is normally used for the land operation and Figure 2 is the coiled tubing unit used for operating in an offshore environment.
Figure 1 – Coiled Tubing Unit on a Truck (Courtesy of Stewart & Stevenson)
Figure 2 – Offshore Coiled Tubing Unit (Courtesy of NOV)
This is very interesting to see how the body of drill pipe and tool joint together using the rotary friction welding.
The friction welding or FRW is solid-state welding process which generates the heat using the friction between the work pieces in relative motion to each other, with addition of lateral force known as “upset” in order to displace and fuse materials plastically. Technically, no melt takes place and in the traditional sense friction welding isn’t a process of welding, rather it is a forging technique. Because of similarities between traditional welding and these techniques, it has become a commonly used term. The friction welding is used with thermoplastics and metals in a variety of automotive and aviation applications.
This is the brief explanation of a Kelly rotating system on the rig. Kelly rig is on an old style rigs and nowadays it is mostly used on land operations. For offshore operation, a top drive system is used instead.
First of all, it is important for new people to look at these images before reading the information below because they show the equipment’s name and where they are on the rig.
Mast and derrick are used to support load from hoisting system and drilling load. However, they are different.
Referring to the API definition, a mast is a structural tower comprised of one or more sections assembled in a horizontal position near the ground and then raised to the operating position. If the unit contains two or more sections, it may be telescoped or unfolded during the erection procedure. Generally, masts are assembled on the ground in a horizontal position and then are raised using the draw works. Some masts use telescopic sections and are assembled in a vertical (boot strap) fashion. Masts are normally used on land rigs; they are rarely used on offshore rigs.
BOP equipment is one the most critical equipment for well control operation. Learning about it via VDO training is a good way to understand this subject because you can see what the equipment look like, how these equipment relates to the operation. This VDO will teach you several topics about the BOP equipment as BOP stack, choke manifold, choke panel, accumulator, etc. Additionally, the full VDO transcript is provided to aid your learning.