A: An Overshot is designed to catch the outside diameter (OD) of the lost object, while a Fishing Spear is used to grip the inside diameter (ID). Both tools feature replaceable grapples to accommodate different sizes of stuck pipe or tools.
A: Selection depends on the debris. Flat-Bottom Mills are best for grinding stationary objects, while Pilot Mills are used for milling tubulars like liners or washpipes. We use premium tungsten carbide for maximum cutting efficiency.
A: Yes. We offer specialized fishing tools manufactured from sour-service materials that meet NACE MR0175 standards to prevent hydrogen-induced cracking in high-sulfur environments.
A: Absolutely. Along with the tools, Shangshan Petro provides detailed operation manuals and technical consultation to help your team select the optimal fishing string configuration for your specific wellbore scenario.
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