Why Hunting’s TEC?28 semi?premium connection matters in deep wells

Reviewed: ad hoc news Software & Services desk. Edited and checked on 2026-06-18, 07:23. Details in the imprint.

With the TEC-28 connection, Hunting puts a visibly robust, almost overbuilt thread on the pipe joint that crews lower into hot, high-pressure wells and simply need to forget about. One clean stab, a few turns, and the joint should just seal and stay sealed.

What TEC-28 is built for

TEC-28 is Hunting’s semi-premium tubing connection designed for deviated and extended-reach wells where standard API threads struggle with sealing and galling. It targets operators who need more performance than a basic coupling but do not want full premium pricing.

The connection uses a modified buttress thread geometry with a metal-to-metal seal at the pin nose, giving higher gas-tight integrity and collapse resistance than API 8RD. Crews see a relatively generous stabbing window, which helps when running long strings in windy or offshore conditions.

Design details that matter on the rig

Look closely at a TEC-28 joint on the catwalk and the tapered, shouldering profile stands out, with a clear torque stop that tells tongs when to quit. That positive shoulder is meant to give repeatable make-up and consistent preload across the seal.

Hunting specifies that TEC-28 maintains high bending capacity so the connection can ride through doglegs without concentrating stress at the joint. For crews, that should translate into fewer worries about micro-leaks developing after the well is steered aggressively through the reservoir.

How it compares with full premium options

Against Hunting’s own SEAL-LOCK premium connections, TEC-28 sits one rung lower, offering solid gas-tightness and torque but not the extreme ratings needed for sour service or ultra-high pressure. That trade-off keeps the machining simpler and the cost closer to upgraded API.

Many operators use TEC-28 in the production tubing where conditions are harsh but not extreme, saving the full premium budget for casing strings higher up. This layered approach is increasingly common in large offshore and Middle East projects as companies scrutinize every dollar of well cost.

Where TEC-28 makes life easier

On the floor, crews typically feel the benefit in running speed. The connection’s stabbing lead and robust thread form are designed to resist cross-threading, so tongs can go on quickly without endless fine adjustments and radio shouting between driller and tong hand.

Fewer rejects during make-up mean less time cutting out damaged joints and re-running, something offshore supervisors notice immediately on the time sheets. When weather turns or the rig schedule tightens, that can be the quiet difference between finishing a run in one tour or slipping into the next.

Limits and where operators look elsewhere

Despite its strengths, TEC-28 is not the connection of choice for aggressive sour gas wells or HPHT envelopes that demand the very highest gas-tight performance. Here, Hunting directs customers to its SEAL-LOCK family or other fully premium designs with more elaborate sealing systems.

Also, TEC-28 is optimized for certain tubing sizes and weights, so very niche dimensions may not be readily available from stock. That can push some smaller programs toward alternative semi-premium offerings where local mills carry more inventory.

Business backdrop and stock note

Connections like TEC-28 sit at the heart of Hunting’s energy portfolio, alongside precision-machined components supplied to major operators in North America, the Middle East, and Asia-Pacific. As drilling activity shifts toward longer, more complex wells, demand for such semi-premium products remains structurally important for the group.

Shares of Hunting PLC (GB0004225066) trade in London on the LSE; recent price data are published regularly on the company’s investor-relations pages and market platforms.

This article was AI-assisted and editorially reviewed. Product information without guarantee; prices and availability may change at short notice. No investment advice, no buy or sell recommendation. Stock-market transactions involve risks up to total loss.