Derrick drill rig

There are various types of derrick based on how the tower or mast is set up and the use of boom. An A-frame derrick is one in which the boom is hinged from a cross member between the bottom ends of two upright members spread apart at the lower ends and joined at the top; the boom point secured to the junction of the side members, and the side members are braced or guyed from this junction point. [pdf]

Drill rig derrick

A guy derrick (also known as boom derrick) is a fixed guyed mast derrick that can be rotated and connected to a boom. The mast is in upright position with the base that can make the mast rotate, but not lean in any direction.OverviewA derrick is a composed at minimum of one , as in a , which may be articulated over a load by adjusting its . Most derricks have at least two components, either a guyed mast or self-supp. . There are various types of derrick based on how the tower or mast is set up and the use of boom. An A-frame derrick is one in which the boom is hinged from a cross member between th. [pdf]

Drill ship oil rigs

A drillship has greater mobility and can move quickly under its own propulsion from drill site to drill site in contrast to semi-submersibles and jackup barges and platforms. Drillships have the ability to save time sailing between oilfields worldwide. . A drillship is a merchant vessel designed for use in exploratory offshore drilling of new oil and gas wells or for scientific drilling purposes. In recent years the vessels have been used in deepwater and ultra-deepwater. . A drillship can be used as a platform to carry out well maintenance or completion work such as casing and tubing installation, subsea tree installations, and well capping. Drillships are often built to the design specifications set by the oil production. . There are different types of units such as the , , , platform and of course drillships. All drillships have what is called a ”moon pool”. The is an opening on the base. . The first drillship was the , designed by Robert F. Bauer of Global Marine in 1955. The CUSS I had drilled in 400-foot-deep waters by 1957. Robert F. Bauer became the. . Drillships are just one way to perform various types of drilling. This function can also be performed by , jackups, . • • • • • [pdf]