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Random PICTURE of the day thread *KEEP IT WORK SAFE*
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Originally posted by GrayStangGT View PostBig Dog Drilling had a slight accident yesterday, rumor is they were pulling 60k lbs over what the derrick was rated at.
Originally posted by 5.0_CJ View PostI'm not too knowledgeable on derricks... but that's a drill rig, right? By pulling too much weight, you mean they were digging down too deep and had too much weight suspended?
We did a mast load test at one of my OEMs and they had a strain gauge between the anchor in the ground and the hook (traveling block in the mast). We went balls out on the engine pulling the hook on a static load (anchored in 100 ft of concrete in the ground) and the strain gauge showed 250,000 lbs.
That was on a workover (well servicing) rig. At 496 lbs per pipe (30ft each)... that rig, without pulling a stuck tool that would have been 15,000 ft of string... A drill rig should be rated way beyond that.
Long story short, if you collapse a mast you are WAAAAAAAY FUCKING STUPID.
I'll post a pic later, but on that test pull we let the load off too quickly and actually bent motor mounts / trans mounts / etc. BENT 1/2" steel plate.
Anyway, since this is a pic thread, here's what I work with most of the day:
Last edited by Strychnine; 04-13-2012, 04:39 PM.
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Originally posted by Strychnine View PostLMFAO.
Yes. Between hanging pipe / string load if they were stuck they overcame the rated load capacity of the srtucture.
We did a mast load test at one of my OEMs and they had a strain gauge between the anchor in the ground and the hook (traveling block in the mast). We went balls out on the engine pulling the hook on a static load (anchored in 100 ft of concrete in the ground) and the strain gauge showed 250,000 lbs.
That was on a workover (well servicing) rig. At 496 lbs per pipe (30ft each)... that rig, without pulling a stuck tool that would have been 15,000 ft of string... A drill rig should be rated way beyond that.
Long story short, if you collapse a mast you are WAAAAAAAY FUCKING STUPID.
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