Conductor tensioner units from ICON Engineering kept winning international orders through the toughest stretch of the last major oil-price downturn. In May 2016, Perth-based ICON reported another conductor tensioner unit (CTU) order into the Gulf of Mexico’s offshore oilfields, with rig operator Oro Negro adding an ICON P100A to a fleet already running ICON tensioning equipment.
What a conductor tensioner unit does
On a jackup rig, the blowout preventer (BOP) sits at the top of the conductor — the large-diameter outermost casing string that forms the structural foundation of the well. The weight of the BOP stack bearing down on the conductor creates compression loads, and excessive compression risks buckling the conductor beneath.
The ICON P100A Tensioner addresses this by providing BOP top tension: it supports the weight of the BOP and prevents potential buckling of the conductor from excessive compression loads. The P100A provides passive compensation to maintain a nominally pre-set tension, so the load on the conductor is managed as conditions change during operations.
More broadly, conductor tensioning systems provide controlled axial loading during conductor installation and drilling operations, managing conductor load transfer, alignment and stability throughout well construction. The required tension is not static: string loads change at each stage of well construction, which is why engineering analysis and a recommended tensioning programme sit alongside the hardware itself.
Repeat business from the Gulf of Mexico
The May 2016 order came from Gulf of Mexico rig operator Oro Negro, which ordered an ICON P100A pull-up CTU control system after having used the push-up style ICON T230A tensioner unit for many years on its Laurus and Primus jackup rigs. Moving from one ICON conductor tensioner unit design to another across multiple rigs made this a clear case of repeat business from an established user.
CTU Project Manager Scott Warren said at the time that while belts were clearly being tightened across the drilling sector, the latest P100A design advantages were highly valued by rig operators.
“It is always a good sign of a great product, and service, to win repeat business,” he said.
An order won in a downturn
The context makes the order more notable. Through 2015 and 2016, sustained low oil prices — crude had fallen from above US$100 a barrel in mid-2014 to lows near US$30 in early 2016 — forced drastic cost cuts across the drilling sector, with contractors worldwide deferring or cancelling discretionary spending. Winning a new equipment order in that climate — from an operator with years of first-hand experience running the product — is the kind of endorsement no marketing can manufacture.
A track record of more than 90 units
The Oro Negro order added to a substantial installed base. By 2016, more than 90 ICON conductor tensioner units of various designs had been sold to drilling rigs around the world since 2005, spanning both pull-up and push-up configurations to suit different rigs and conductor programs.
Conductor tensioning at ICON today
The conductor tensioner unit remains a core part of ICON’s equipment offering. The current range spans push-type Conductor Tensioning Units (CTU) and pull-type Top Tensioning Systems (TTS), with dedicated Conductor Tensioner Control Units (CTCU) providing tension control and monitoring, and compatible push-type and pull-type conductor gripper clamps completing the system.
Behind the hardware sits ICON’s in-house conductor analysis capability: documenting string loads at each stage of well construction, determining the minimum tension required to avoid compression buckling, and producing recommended tensioning programmes, accumulator pre-charge specifications and vortex induced vibration (VIV) assessments. Systems are independently certified, available for hire or purchase, and supported by ICON’s offshore personnel through mobilisation, commissioning and operation. Contact ICON to discuss project-specific conductor tensioning requirements.
