The mast is normally used on land drilling rig types requiring a good deal of mobility; they are rarely used on offshore rigs. The racking board is in a cantilever position and lengths of drill pipeare racked on a floor, called the setback, that is separate from the mast structure. Most masts have one side open (window side),. .
There are different types of masts for land drilling and service rigs: 1. Folding Type 2. Telescopic Masts 3. Bootstrap Type 4. Portable/Cantilivered masts (Non-Guy line) .
Figure 8 shows a telescopic mast. Telescopic masts with their drawworks and engines are usually mounted on trucks or trailers. The load should be borne by hydraulic or. .
Each structure shall be rated for the following applicable loading conditions. The following ratings do not include any allowance for impact. Acceleration, impact, setback, and wind loads will reduce the rated static hook load capacity. Technical specifications are identical to those for derricks: 1. Maximum hook load given the reeving system, 2. F. .
For conventional Mast (Land rig), the below pictures show the erection sequence of rigging up For rigging up the vertical mast, the below pictures show the bootstrap sequence of rigging up.
[pdf] • (#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] At Allrig we are committed to providing the highest level of service quality for your equipment under maintenance both onboard and at our regional workshops - quality, cost effective solutions delivered safely and on time by our experienced global team wherever the location. Allrig provides services for all of. .
Allrig’s rounded service portfolio includes many complementing services, to ensure wide support to projects and fewer companies for you to. .
If you are interested in understanding more about Allrig’s Drilling Equipment services, or if you would like to know more about how we could support you in general, please.
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