A wellhead stack is a set of stacked pressure-containing spools and hangers, and the names of the main components — casing head, tubing head, hanger — get used constantly without always being explained. Here’s what each one actually does, and how they fit together. The basic idea: a wellhead is stacked, not built as one

Wellhead equipment often outlives the paperwork that qualified it. A stack installed fifteen or twenty years ago can still be structurally sound while the code edition it was designed to, the field’s production plan, or the equipment’s own service history have all moved on since. The question isn’t whether the equipment still works — it’s

A lot of equipment in service today only exists as 2D drawings — some scanned from paper originals, some in a CAD format the original software can no longer open. It still works, and the drawings still technically describe it. So it’s a fair question why you’d spend money turning that into a parametric 3D

A subsea tree does the same fundamental job as a surface tree — controlling flow from the wellbore — but almost everything about how it’s designed to do that job is different, driven by one basic constraint: nobody can walk out and manually operate it. That single difference cascades into how it’s actuated, monitored, sealed,

AR/VR training gets pitched with a lot of enthusiasm and not much specificity about what it’s actually good for. It’s worth separating the genuine advantage from the novelty, because the honest answer is: it depends heavily on what you’re training for, and for the wrong use case it’s an expensive way to reproduce a manual

A dimension with a plus/minus tolerance tells you how big a feature is allowed to be. It doesn’t tell you where that feature is allowed to sit relative to everything else on the part, or how far it’s allowed to tilt, or how round a supposedly round bore actually has to be. That’s the gap