Roller Cone Bits - Oil & Gas Products 2006-2007 - Varel International

V a r e l R o l l e r C o n e D r i l l B i t T e c h n o l o g y
Varel Drill Bit Technology
Varel Challenger roller cone bits are designed and manufactured
to provide high levels of performance and reliability. Challenger
products are the result of years of industry experience and
thousands of hours of field tests in the most demanding
applications. Every detail of the design and manufacturing
process results in a product that meets or exceeds the
requirements of our customers, every time.
Using electronic logs and our proprietary geoscience program,
Varel evaluates characteristics of rock formations to select the
most effective bit model for the interval. This program enables
Varel to determine rock compressive strength (drillability/ROP),
abrasivity (bit life), shale reactivity versus depth (bit and hole
cleaning), and characterization of heavy minerals (such as pyrite).
Additionally, Varel has developed proprietary algorithms for
cutting structure and bearing designs to ensure each product
design consistently performs in a variety of applications.
Algorithms are used to design cutting structures to achieve
desired rates of penetration, resist tracking, and combat offcenter
operation. Bearings and seal systems are designed using
models that assure adequate load capacity and seal wear life
in high rotary speed and/or applications with high solids in the
circulation system. Every new Challenger design is peer
reviewed to ensure that no detail is overlooked.
Materials used in the construction of Challenger roller cone
bits are sourced from leading suppliers who have the ability to
produce consistently to high standards and meet firm delivery
schedules. Varel operates using the philosophy of partnering with
suppliers in order to build long-term relationships that provide
quality materials and components that provide increased value to
our customers.
Varel develops and utilizes manufacturing processes that
are robust and repeatable. These processes are constantly
monitored and continuously reviewed to provide the drilling
industry with ever-increasing value. All Varel roller cone design
and manufacturing facilities are managed through quality
programs meeting the requirements of both ISO 9001:2000 and
API Q1. These quality programs are designed with an emphasis
on consistency, quality and continuous improvement in all
aspects of our business.
Challenger bits are tailored for specific applications by
customizing from a rich set of optional features. These features,
shown throughout this catalog, provide additional value as they
are designed to give increased wear protection in demanding
drilling applications. This results in longer bit life and reduced
costs for our customers.
All Varel products are delivered with superior service. No matter
where you are in the world, Varel sales and technical service
personnel are experts on local drilling conditions and problem
avoidance and can assist you with proper drill bit and operating
parameters selection. From well proposals to onsite monitoring,
Varel is available to help you plan and drill your well successfully.
Varel maintains an extensive bit record database. The information
in the database is constantly monitored and utilized to improve bit
design and enhance performance.
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