Drilling derricks and Rig Masts consist of a steel framework with a square or rectangular cross-section. Their purpose is to support the hoisting equipment and rack the tubulars while tripping pipe. The number of joints in a stand (single-double-triple) that the rig can pull is dependent on the height of the derrick. .
The Drawworks is one of the most important components of the drilling rig (types of drilling rigs). The unit supplies the hoisting power, the. .
The Crown Blockas a drilling rig component is a fixed set of pulleys (called sheaves) located at the top of the derrick or mast, where the drilling line is threaded. The companion blocks to these pulleys are the traveling blocks. By using two sets of blocks in this fashion,. .
The Traveling Blockis a set of sheaves (pulleys) that move up and down in the derrick. The drilling line is threaded (reeved) over the. .
Attached to the bottom of the traveling blocks, the hook is required to hang the swivel and rig kelly(for drilling) and the elevator bales (for tripping pipe and casing). .
This article lists the main components of a onshore . rigs have similar elements, but are configured with a number of different drilling systems to suit drilling in the marine environment. The equipment associated with a rig is to some extent dependent on the type of rig but typically includes at least some of the items listed below.
[pdf] The closing time of annular BOP preventers The main disadvantage of the annular preventer in a drilling rig is the time required to close it. The annular preventer takes three to ten times the fluid volum.
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Since BOPs are important for the safety of the crew and natural environment, as well as the drilling rig and the wellbore itself, authorities recommend, and regulations require, that BOPs be regularly inspected, tested and refurbished. .
A blowout preventer (BOP) (pronounced B-O-P) is a specialized or similar mechanical device, used to seal, control and monitor and gas wells to prevent , the uncontrolled release of crude oil or natural. .
When wells are drilled on land or in very shallow water where the wellhead is above the water line, BOPs are activated by hydraulic pressure. .
During the incident on April 20, 2010, the blowout preventer should have been activated automatically, cutting the drill string and sealing. .
• 2010-06-24 at the May 2010• May 2010 .
Blowout preventers come in a variety of styles, sizes and pressure ratings. Several individual units serving various functions are combined to. .
BOPs come in two basic types, ram and annular. Both are often used together in BOP stacks, typically with at least one annular BOP capping a stack of several ram BOPs.Ram blowout preventerThe .
• • with a list of notable offshore well blowouts• • •
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