Drilling economics has become an even
hotter topic in the drilling world as of late. Just mentioning the
term can draw an expansive list of cliché terms, with the most
obvious being ‘time is money’. The recent shift in the
marketplace has severely altered the supply and demand of drill bits.
And in one tongue-in-cheek assessment, operations are demanding
extended performance out of a fewer number of products. Today these
sentiments are not only valid, but are the driving force behind drill
bit manufacturers’ and suppliers like Drill Bits World focus when
delivering solutions to the market.
When operators plan their projects, a
multitude of costs are considered. As much as 98% of a drilling
operation’s budget normally encompasses the needed services and
personnel to operate the rig including fluids, drive systems, etc.
Drill bit costs, in relation, have historically been known to only
represent approximately 2% of the total authorization for expenditure
(AFE).
Drill bit manufacturers are constantly
faced with the question on how they can improve drilling economics.
Luckily for operators, fierce competitiveness in this market drives
innovation. With the end goal to maximize hours on bottom and rate of
penetration without jeopardizing safety and bit integrity, drill bit
providers strive to achieve superior drilling performance.
Through the industry standard cost per
ft/m measurement, one can clearly discern that the drill bit’s
contribution to the drilling economics can have a rather large
effect. Correct bit selection can reduce hours, if not days, of
drilling time proving that drill bits have a measurable effect on the
bottom line. This saving of time directly results in bottom line
savings of rig rate, and elimination of additional service components
and safety concerns.
Analytical tools and software
development
In today’s digital oilfield
environment, practically each component of the bottom hole assembly
including the drill bit can be modelled, tested and optimized before
ever being manufactured. Initial drill bit software platforms,
introduced in the late 1980s, have given way to software packages
capable of modelling a product with consideration to rock properties
and drilling parameters, simulating a run and assisting in the
selection of the best drill bit for the application. These packages
work to strike the delicate balance between drilling efficiency, bit
life and borehole quality.
The major drill bit manufacturers have
adopted holistic design systems, or a closed loop system for drill
bit design. The systems are generally based upon formation analysis,
cutting structure design and simulation.