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). .
• (#22) is a section of large diameter pipe fitted to the top of the that the attaches to via a side outlet, to allow the to flow back to the .• (BOPs) (#23 and #24) are devices installed at the wellhead to prevent fluids and gases from unintentionally escaping from the . #23 is the annular (often referred to as Hydril named after a manufacturer), and #24 is the pipe rams and blind rams.
[pdf] A moon pool is an equipment deployment and retrieval feature used by , , , , and or , and. .
The Hughes was a 50,500 long tons (51,300 t), 619-foot-long (189 m) ship constructed by the United States in the early 1970s for the from the Pacific seabed. The desig. .
Very deep moon pools are used in —submerged chambers used by divers engaged in underwater research, , , and . In this case, shown in part D of. .
Moon pools are becoming increasingly used on to allow for hauling of the gear in worse weather conditions. They also reduce the exposure of fish to air, improving quality. Along with bird scarin.
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Drill pipe elevators for USC with taper shoulder and square shoulder weld-on tool joints shall have bore dimensions as specified in Table 1. Notes on Table 1: Oilfield elevators with identical bores are the same. 1. * Not Manufactured. 2. ** Obsolescent connection. 1. 1 Dimension DTE from API Spec. 7, Table 4.2 2. 2. .
A very close fit of the hinge pin and pawl significantly affects the correct functioning of an elevator – especially the center-latch elevator. If there is play in the hinge, the elevator tends to. .
In addition to the side-door elevator, single-joint and slip-type casings are used in running casing. We use a single-joint elevator (Figure 7) to. .
Since both care and inspection procedures depend primarily upon the amount of service the equipment has had, it is challenging to project. .
The following checks apply to all types of elevators. For a quick reference to critical points of the drill pipe elevators, see Figure 29. 1. Is the oilfield elevator size correct? 2. Are the dies of slip-type elevators sharp? 3. Are the hinge pin or holes worn? 4. Are.
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