DRILLING & COMPLETION
Intervention solution proves
effective in deepwater fields
Data-tracking/transmission package boosts efficiency
From straightforward cleanouts and cas- ing exits to complex workovers, well intervention is a continuous and nec- essary aspect of hydrocarbon produc- tion that boosts exploration potential,
extends the life of producing wells, and rejuvenates old ones.
In the high-profile deepwater sector, however, even the most routine well interventions
are subjected to the highest degree of scrutiny, as operators consider the risks inherent in
an arena where the cost of failure is considerable. For this environment, sophisticated and
integrated systems that deliver reliability and
certainty in ways that foster collaboration are
essential to maximizing efficiency, economics, and safety.
Underlying that objective is the need to
combine the best casing-exit technologies with
real-time data that is both comprehensive and
actionable. An enhanced casing-exit service, for
example, comprises a powerful data-gathering
package, a field-proven milling tool, and 24/7
technical expertise to meet the demands of the
most challenging environments. These environments can include deepwater, extended-reach,
multilateral and mature well profiles; wells with
high dogleg severity; and infill drilling.
With this expanded capability, the Weatherford Quickcut Pro service can deliver measurable gains in reliability and repeatable
precision in milling casing-exit windows, ultimately reducing downtime and minimizing
A key aspect of the casing-exit service is
the collaborative AccuView data-tracking
and transmission software and hardware
system. This patented system serves as a
real-time portal for both the onsite crew and
an onshore team of experts to consistently
and precisely plan and execute a precise casing exit, in a minimum number of trips. Precisely milled casing-exit windows provide
access to additional reservoirs and further
serve as a contingency for bypassing obstructed or damaged wellbores.
The new service increases the likelihood
that casing-exit windows are milled with a geometry that provides optimum compatibility
with drilling and liner programs, regardless
of casing size, grade, depth, inclination, formation characteristics, or even the number
of casing strings that have to be milled. It includes an intuitive user interface that enables
real-time communication and decision-making during the operation by uniting the rig
crew with a regional or global support team.
The solution is proving especially effective in
producing clean, precise, and smooth casing
exits in high-tier deepwater fields where the
need for accuracy is paramount.
Officially launching at the SPE Annual
Technical Conference & Exhibition in Dubai
in September, the data-tracking and transmis-
sion service has been incorporated in dozens
of field trials, including a multi-pad explora-
tion platform in the North Sea.
Classroom to field
The data-tracking and transmission system marks the culmination of an effort that
began nearly five years ago as a classroom
training mechanism. Students were using
a simulator to virtually mill casing-exit windows on a computer. To make the training
even more interactive, data from each student was shared with the classroom in real
time. This approach resulted in a marked
improvement in the students’ window-mill-ing performance, validating that real-time
access to real-time data from other wells can
result in better-milled windows.
Recognizing that the software represented
an opportunity to reduce risk and improve
reliability when milling real-world casing-exit
windows, Weatherford refined and adapted
the software for commercial use in 2015. The
software’s procedural design particularly lends
itself to deepwater applications, where operators need to have well-documented procedures.
The plug-and-play technology includes a
highly portable field kit containing software
that securely captures and distributes data
from the rig’s existing electronic drilling recorder. A magnetized antenna transmits data
to decision makers on site while a network
connection enables data transmission to the
Adrian Vuyk, Jr.
being lowered into the
wellbore. (All images