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The Terraformopenhole packer series has been combined
with a new generation of shunt tube based screens systems and
a generation IVWFXO gravel pack system to deliver cased hole
functionality. Since its introduction the industry has collectively
saved over US$2 billion in well construction costs and achieved
production and injectivity gains from this openhole completion
technology. It has been used in the Far East, Africa, the North Sea
and the Gulf of Mexico.
The company has also developed fibre optic data systems for
onshore and offshore use that can be combined with downhole
flowmetering, remote flowmetering topside and analytic
capability to capture valuable information froma large quantity of
data points. The information can then be used tomake real time
decisions and take real time action through an automation system
based around Centro and Foresite Edge.
In the fields of completions, liners, cementation,
tubular running, fishing, and wellbore clean up, the company
has focused on improving personnel safety by reducing crew
numbers offshore by up to as much as a half. As a result,
benefits have included a 30% improvement in run time, a
shrinking carbon footprint and cost savings for the operator and
Weatherford alike.
Welltec
In this challenging oil price environment, the focus remains on
improving the efficiency and the value of assets. Welltec’s range
of completions products are designed and engineered to enhance
production through the life of the well – fromearly planning,
design, and construction to zonal isolation and completion.
To isolate unwanted water or gas inflow and
compartmentalise the reservoir it is highly advantageous to
design a well with reliable isolation between the lower completion
and openhole without a reliance on cement.
TheWelltec annual barrier (WAB®) for openhole zonal isolation,
alongwith variations of thismetal-expandable barrier technology,
facilitates the ability to deploy ‘cementless’ extended reach,
multi-zone, horizontal, lower completions. It provides on-demand,
high pressure zonal isolation across varying borehole geometries
unaffected by thermal changes in thewellbore. The technology can
be used for zonal isolationwithin the reservoir or between adjacent
zones, water/gas isolation, high pressure openhole isolation for
stimulation, and in openhole, cased hole and hostile environments.
Casestudy
A client in the Middle East desired zonal isolation within a
horizontal well with an openhole completion, due to historic
issues with cemented liners. The client wanted to selectively
divide the reservoir into six compartments, separated by WABs,
and equip each zone with remotely-operated, inflow control
devices to balance production.
The client’s liner was deployed successfully to 16 539 ft TD in
total loss conditions. The barriers were successfully expanded and
set using calculated volume based on the total loss environment.
Zonal isolation was achieved and the client was able to produce
the zones using the inflow control devices within each isolated
compartment.
COMPLETIONS REVIEW
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