Page 80 - Open-Hole Log Analysis and Formation Evaluation

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ai
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VAIIA
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ANIA
Core
Inner
bit
Bearing
Core ‘ore bit (
barrel
Outer barrel
catcher
assembly
(see detail )
/
Bit face
is
to
or crown
fig.
may
This
from
Cores
For
World
FIGURE
“==
hold
be
wellsite
4.4).
can
kind
such
laboratory
4.3
orientation
the
maintained
for
a
cut.
of
some
be
is
The
maintained
for
at
Oil from
Fluid courses
by
The
core.
core
core
from
Outer barrel
friable
Core catcher
is
Park,
10
use
Core catcher sub
analysis.
to
original
Conventional
of interest.
barrel
applications
ofa
April,
original
60
is
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material
transportation.
a
ft
valuable
Both
1985.
in
Coring
For
Ifunconsolidated formations are
special
more
Normally,
reservoir
bed
Rubber
Ratchet
special
designed
key
orientation
dip
to be
other
Stripper tube
sleeve
so
Devices.
springs
of
fractured
that
long and have
and
securely.
pressure
pressure
a
that
the
cored,
pressure
cuts
a

after
cores
until
core
Reprinted
core
azimuth

applications,
reservoirs,
it
the

by
|
are
can
groove

core
may be
__——-
be
in
relative
diameter of 17%
where
is
arrives
a rubber sleeve
frozen
to
Core
the
oriented
Latch
is
cut
at
at
cut
Release
to 4%
permission
Expansion
it
plug
deduced
in.
the
north
core.
fracture
used
the
is
(see
cores

of
Regulator—___
Inner barrel—___
iN
|
fs
N
‘ Spring joint——__hY] joint en Latch— oT

i

4.
- Bit: Gore catcher Ball valve Upper seal ring reservolr G as CORING
=

FIGURE. 4.4
Jrom Park,
April,
Pressure

: 1985, Core Barrel. Reprinted by Core bit (see Core catcher Inner barrel Outer barrel assembly Bearing Extension rod Non-magnetic Survey tool

detail)
5 on of World Oil permi ring Retaining ane . Scribes Core catcher barrel Outer drill collar