Breaking the Mould – A Collaboration Case Study from Centek Group.
With a raft of expensive ‘low friction’ centralizers launched on the market in
recent years,
friction has clearly become a hot topic for cementing and drilling engineers. Friction
factors are key to simulation packages which are used to predict downhole performance and
support product selection. However, whilst the basics of friction are well understood within
the oil and gas energy, the impact of formation type, drilling fluid properties, well hole
cleanout and wellbore stability on friction factors are largely unknown. Most friction
factors are based on the material or coating used for the centralizer and are measured using
standard friction tests which bear little relation to downhole environment and often do not
consider wear on the low friction material.
As the innovator of the S2 single piece bow spring centralizer, a product which
has virtually
eliminated downhole breakages and can be used with low or no start and running forces,
Centek wanted to thoroughly investigate friction before developing their own low friction
product. Whilst the company has its own on-site test facilities and laboratory, it sought
outside support when it embarked on the new product development. This has been part funded
through an Innovation UK grant and combines the expertise of tooling companies, University
of Exeter research engineers and manufacturers from across the UK to develop a low friction
and low wearing product and a real-world test protocol and equipment to prove its
performance downhole.
In their presentation, Dr Amin Hedayetullah, Engineering Innovation Manager at
Centek, Luke
Savage, Senior Research Fellow, and Soumyajit Mojumder, Postdoctoral Research Fellow, from
the University of Exeter will explain the challenges facing the industry to reduce carbon
emissions and power use, the real impact of low friction centralizers downhole and Centek’s
pathway to producing a hard wearing, low friction range of centralizers to support
operators. They will go onto to explain how critical seeking expertise from outside of the
oil and gas industry has been to the development of a truly innovative product and how and
why Innovate UK has subsidised this endeavour. Finally, they will showcase the latest
results of their research into potential low friction materials and the challenges of
bringing this to market within the 18-month time frame.