Appeal No. 1999-0444
Application No. 08/758,655
The Leutwyler reference is not cited to show
the complete invention as claimed. Leutwyler,
admittedly, runs the packer and perforating gun in a
well on a wireline. However, the secondary
references to Ross '860 or Council et al '046 or
Crawford '642 show that it is extremely well known
in the art in the last decade to run well tools on
coiled tubing rather than on a wireline because of
many advantages provided by the coiled tubing string
over the wireline, e.g., a coiled tubing having a
greater strength; capable of pushing a downhole tool
in a horizontal or deviated wellbore or conveying
fluid downhole when needed, as evidenced by Ross
'860 or Council et al '046 or Crawford '642.
Like the examiner (page 8 of the answer), we note that
Council '046 states in column 1, lines 17-32 that:
Although wireline tool operations are still in
wide-spread use, the use of coiled or reeled tubing
is becoming more popular since it enjoys advantages
over wireline in certain operations. For example,
coiled tubing can be used in connection with highly
deviated or horizontal well completions since the
coiled tubing does not rely on gravity for setting
and retrieval of downhole devices. Coiled tubing
has also proven to be advantageous from a time and
money saving standpoint in connection with sand
washing, fluid displacement, removal of paraffin,
squeeze cementing, spotting acid, light duty
drilling of cement and the like, fishing operations,
and flow line clean out. With the recent
availability of large diameter coiled tubing,
increasingly heavier duty well drilling, servicing
and completion operations are possible.
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