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The Overshot is dropped or pushed into the drill string to bring back the
inner – tube assembly by means of wireline cable hoist
The Locking Coupling attaches the drill string to the outer – tube assembly
and maintain a mating surface which the head assembly latches ride
against while performing the drilling.
Besides this, locking couplings maintains directional control for the core
barrel assembly by means of wear resistant preserving pads that wear
down against the drill hole wall.
The adapter coupling matches between the locking coupling and core
barrel outer – tube, maintaning the pocket into which the head assembly
secures deploy
The head assembly maintains latching and also evoting spearpoint
mechanism to grant insertion and bringing back of the inner – tube
assembly, a bearing assembly to let on the inner – tube to remain
stationary and avert sample damage while driling, fluid pressure operating
indications and fluid control valves. All head assemblies integrate a shut
off valve assembly which maintains a fluid pressure signal to drill operator,
revealing a full or blocked inner – tube.
The Landing Ring sits in the upper – end of the outer tube and is
recollected by the mating coupling. As the inner tube assembly trips into
drill string the landing shoulder on the Head Assembly collides the Landing
Ring setting the inner tube assembly into drilling position.
The Overshot is dropped or pushed into the drill string to bring back the
inner – tube assembly by means of wireline cable hoist
The inner- tube takes the core sample as performing
progresses. Multiple inner – tubes can be assembled
extensions to get longer core samples.
Installed in the reaming Shell or in mated outer – tube extensions, the
replaceable and reversible inner – tube stabilizer maintains centralizing for
advanced sample recovery and a bearing between the stationary inner –
tube and the rotating outer – tube
The core lifter is a pressed steel, split collar with a tapered body that
matches to a tapered socket in the core lifter case.
In a core breaking operation, the drill string is climbed off bottom and the
core sample starts to slide out of the inner – tube. Grip marks on the inner
surface of the core lifter takes the moving core sample and pull the core
lifter towards the smaller end of the tapered socket in the core lifter case.
The core lifter is compressed against core sample and retainsit after it has
broken, granting retrieval to surface
The core lifter case mates to the inner-tube and houses the core lifter
in a tapered socket which controls movement of the core lifter. As the
drill string is lifted during a core breaking operation, the core lifter case
bottoms out on the inside of the drill bit transferring the pullback load from
the drill string to the core lifter until the core sample breaks.
The stop ring is a compressed steel snap ring devised to seat into a
mating groove, and maintaining the core lifter in the core lifter case
Wireline systems are optimal for use in most drilling conditions and
applicable in standard DCDMA hole sizes. (B,N,H,P)
Son-Mak presently offers two models of the wireline core barrel
system:
O wireline systems, includes the core barrel assembly and the
overshot assembly. Both assemblies are essential to the wireline
system.
The core barrel assembly is formed by the inner-tube assembly and
outer-tube assembly.
The inner-tube assembly is formed:
• Head assembly
• Inner-tube
• Core lifter case
• Core lifter
• Stop ring
The inner-tube assembly takes the core sample during the
performing of the drilling process and seperate of the outer-tube
assembly.
The outer-tube assembly is formed by the remainder of the
core barrels components:
• Locking Coupling
• Adapter Coupling
• Outer-tube
The outer tube assembly always stands at the bottom of the hole
and dwells the inner-tube assembly during the drilling process.
The Overshot is dropped or pushed into the drill string to bring back the
inner – tube assembly by means of wireline cable hoist
The inner- tube takes the core sample as performing
progresses. Multiple inner – tubes can be assembled
extensions to get longer core samples.
Installed in the reaming Shell or in mated outer – tube extensions, the
replaceable and reversible inner – tube stabilizer maintains centralizing for
advanced sample recovery and a bearing between the stationary inner –
tube and the rotating outer – tube
The core lifter is a pressed steel, split collar with a tapered body that
matches to a tapered socket in the core lifter case.
In a core breaking operation, the drill string is climbed off bottom and the
core sample starts to slide out of the inner – tube. Grip marks on the inner
surface of the core lifter takes the moving core sample and pull the core
lifter towards the smaller end of the tapered socket in the core lifter case.
The core lifter is compressed against core sample and retainsit after it has
broken, granting retrieval to surface
The core lifter case mates to the inner-tube and houses the core lifter
in a tapered socket which controls movement of the core lifter. As the
drill string is lifted during a core breaking operation, the core lifter case
bottoms out on the inside of the drill bit transferring the pullback load from
the drill string to the core lifter until the core sample breaks.
The stop ring is a compressed steel snap ring devised to seat into a
mating groove, and maintaining the core lifter in the core lifter case
Overview of Structure
Core Barrel Assemblies
The Core Barrel Kits include all elements needed to perform a full core barrel and use it within a rod string:
Head Assembly
Inner – Tube
Stop ring
Core Lifter
Core Lifter Case
Locking Coupling
Adapter Coupling
Landing ring
Outer – tube
Inner – Tube stabilizer
Inner – tube assemblies
Inner – tube assemblies enable the necessary elements to get
a core sample from head assembly to core lifter:
Head Assembly
Inner – Tube
Stop Ring
Core Lifter
Core Lifter Case
Kayapa l. Organize Sanayi Bölgesi Kayapa Sanayi Bulvarı No:4/1 PK.16280
Nilüfer / Bursa – TÜRKIYE
Phone: +90 224 440 0 555
Phone: +90 224 482 44 41
Faks: +90 224 482 44 39
www.son-mak.com.tr
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