Page 81 - Open-Hole Log Analysis and Formation Evaluation

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ai
Ala
yj
Core
Inner
bit
Bearing
Core ‘ore bit (
barrel
Outer barrel
catcher
assembly
(see detail )
/
Bit face
is
to
or crown
fig.
This
may
from
Cores
For
World
FIGURE
“==
hold
be
wellsite
4.4).
can
kind
such
laboratory
4.3
orientation
the
maintained
for
a
cut.
some
of
be
The
is
maintained
for
at
Oil from
Fluid courses
by
The
core.
core
core
Outer barrel
from
friable
Core catcher
is
Park,
10
use
Core catcher sub
to
analysis.
original
Conventional
of interest.
barrel
ofa
applications
April,
original
60
is
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
so
sleeve
Devices.
springs
of
fractured
that
and
long and have
securely.
pressure
pressure
a
that
the
cored,
pressure
cuts
a

after

until
cores
core
core
Reprinted
azimuth

applications,
it
reservoirs,
the

by
|
are
can
groove

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

of
Regulator—___
Inner barrel—___
iN
|
fs
N
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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