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Anmeldungsdatum: 12.04.2022
Beiträge: 970
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 Verfasst am: 30. Dez 2022 08:53 Titel: BQ NQ HQ PQ Standard Hoisting Plug |
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BQ NQ HQ PQ Standard Hoisting Plug
PEERCHEER offers s BQ NQ HQ PQ standard hoisting plug core for use with BQ NQ HQ PQ BT NT HT PT BTW NTW HTW drill rods and other casing. BQ NQ HQ PQ standard hoisting plug is the tool to place the rods in their drilling position and to help lifting the drill rods or casing. Hoisting plugs are available to in standard BQ NQ HQ PQ size rod and casing.Get more news about Standard Hoisting Plug,you can vist our website!
BQ NQ HQ PQ Hoist Plug Features:
-Long-life thrust roller bearing
-12.5 mm (0.5 in) diameter down-angled vent is incorporated into the body to eliminate side spray from pressurized drilling fluid.
-NW rod box spindle connection
I recently read a post on a social media site that began a spirited discussion. How to use, or whether to use, a common tool in geotechnical drilling. I’m speaking of course of the slip ring, used to quickly hoist geotechnical rods for sampling. Some drillers love ’em. Some drillers do not. But most geotechnical drillers have used them at some point of their career, or do use them, on a consistent basis.
Maybe you’re a guy who spent his entire career in the water well industry or doing oil and gas work, so maybe you don’t know what I’m talking about. A slip ring is a simple tool: a donut shaped piece of steel that has a tab on one side with a shackle to hook your hoist to. Rods used in geotechnical and environmental drilling are typically flush joint and have no slots machined for breakout. This leads to the use of the slip ring.
Slacking the hoist line allows the ring to slide down the rods if the drill string is secured below. If the drill string is not secured, the driller can run the ring down to the table, put tension with his hand on the hoist line and (when done properly) “lower” the rods into the borehole. Now, this is where the debate comes in. If the rods can slip through the ring without the proper tension, were they ever safely secured? And, furthermore, if you can move the ring down the rod to pick up a different point, it’s possible that you can accidentally move the ring below the center of gravity of the drill string. This, of course, would cause the string to become top heavy and possibly fall over.
So are they safe? The answer to that question comes back to the same conundrum that workers and owners struggle with daily: which is more important, production or drill crew safety? The easy answer to is that safety is paramount, so no one should ever use a slip ring. But in the “real world” things are not that black and white. (See what I think of the “real world” in my December 2019 column.) |
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