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A spar is a marine structure, used for floating oil/gas platforms. Named after navigation channel Spar buoys, spar platforms were developed as an extreme deepwater alternative to conventional platforms. [1] The deep draft design of spars makes them less affected by wind, wave, and currents and allows for both dry tree and subsea production.
Rotary table (#20) rotates, along with its constituent parts, the kelly and kelly bushing, the drill string and the attached tools and bit. Shale shaker (#2) separates drill cuttings from the drilling fluid before it is pumped back down the wellbore. Stand (#16) is a section of 2 or 3 joints of drill pipe connected and stood upright in the ...
Fixed platforms are economically feasible for installation in water depths up to about 500 feet (150 m); for deeper depths a floating production system, or a subsea pipeline to land or to shallower water depths for processing, would usually be considered.
Large derricks mounted on dedicated vessels are known as floating derricks [4] and shearlegs. The term derrick is also applied to the framework supporting a drilling apparatus in an oil rig. [5] The derrick derives its name from a type of gallows named after Thomas Derrick, an Elizabethan era English executioner. [6]
Weights can range from a quarter of an ounce for trout fishing up to a couple of pounds or more for sea bass and menhaden. The swivel sinker is similar to the plain one, except that instead of loops, there are swivels on each end to attach the line. This is a decided improvement, as it prevents the line from twisting and tangling.
It includes the visible parts of the bow, stern, sheer, and, if present, tumblehome. On an offshore oil platform, topsides refers to the upper half of the structure, above the sea level, outside the splash zone, on which equipment is installed. This includes the oil production plant, the accommodation block and the drilling rig. They are often ...
Marshall currently manufactures a professional, all-valve bass rig called the VBA400. It houses eight 6550 power valves plus three ECC83 and one ECC82 preamplifier valves. The input accommodates both active and passive bass pick-ups ; there is also an XLR DI output for recording complete with Earth ( grounding ) lift and Pre/Post EQ switches.
Drill string connections are made or broken on the drill floor, and the driller's console for controlling the major components of the rig are located there. Attached to the rig floor is a small metal room, the doghouse, where the rig crew can meet, take breaks, and take refuge from the elements during idle times. Drill floor with the drill pipe