OCTG stands for Oil Country Tubular Goods and refers to pipe and tubing used by oil producers. OCTG includes ISO steel pipes that are used on drilling rigs. While each drill site differs, all have certain things in common. For example, all drilling rigs use drill pipe and drill collars, which are larger-diameter, heavier pipes that fit around the drill pipe and place weight on the drill bit. OCTG must meet certain standards to accommodate the pressures, temperatures, and corrosiveness characteristic of drilling rigs.
Drill Pipe
Drill pipe consists of hollow tubing that connects equipment on the surface to the bottom hole assembly. It works as a conduit for drilling fluid. Drill pipe, along with drill collars and other necessary equipment that goes into the wellbore for drilling, are collectively known as the "drill string."
OCTG Casing
The large diameter pipe inserted into the drilled section of a bore hole and held in place with cement is known as casing. OCTG casing has many functions:
Prevention of water contamination
Prevention of cave-ins on unstable formations
Sealing off high pressure zones to prevent blowout
Providing a smooth bore for installing oil production equipment
OCTG Tubing
Tubing aids in directing oil from the reservoir to the surface. Tubing is placed inside a well and is used to inject fluids. It is of relatively small diameter compared to other OCTG products. Thick metal tubing known as a standpipe facilitates flow of drilling fluid and supports one end of the hose connected to a rig's Kelly drive, which provides the means to turn the drill bit.
Connections
Most OCTG products are joined together by means of threaded connections. Connections seem simple, but with oil wells, considerable attention must be paid to connections to minimize risk of connection failure, which could prove catastrophic.
Clearly, there are many places on an oil rig where inadequate OCTG could lead to disaster. In addition to using ISO steel, obtaining OCTG from a trusted supplier that is vigilant about meeting all applicable standards is an absolute necessity for safe and successful oil drilling.
Drill Pipe
Drill pipe consists of hollow tubing that connects equipment on the surface to the bottom hole assembly. It works as a conduit for drilling fluid. Drill pipe, along with drill collars and other necessary equipment that goes into the wellbore for drilling, are collectively known as the "drill string."
OCTG Casing
The large diameter pipe inserted into the drilled section of a bore hole and held in place with cement is known as casing. OCTG casing has many functions:
Prevention of water contamination
Prevention of cave-ins on unstable formations
Sealing off high pressure zones to prevent blowout
Providing a smooth bore for installing oil production equipment
OCTG Tubing
Tubing aids in directing oil from the reservoir to the surface. Tubing is placed inside a well and is used to inject fluids. It is of relatively small diameter compared to other OCTG products. Thick metal tubing known as a standpipe facilitates flow of drilling fluid and supports one end of the hose connected to a rig's Kelly drive, which provides the means to turn the drill bit.
Connections
Most OCTG products are joined together by means of threaded connections. Connections seem simple, but with oil wells, considerable attention must be paid to connections to minimize risk of connection failure, which could prove catastrophic.
Clearly, there are many places on an oil rig where inadequate OCTG could lead to disaster. In addition to using ISO steel, obtaining OCTG from a trusted supplier that is vigilant about meeting all applicable standards is an absolute necessity for safe and successful oil drilling.
Nice post. This information about how to use OCTG tubing are very useful and the prevention tips are really good.
ReplyDeleteThanks for such a great post and the review, I am totally impressed! Keep stuff like this coming.
ReplyDeleteCasing Pipe Manufacturers