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JANUS OILFIELD TECHNOLOGY s.r.l.
The Company that
developed and patented
the DOPE DIFFUSER
(Ravenna Chamber of Commerce )
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DOPE DIFFUSER
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DOPE DIFFUSER
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TOOL SPREAD
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TOOL SPREAD
Guide pins
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Diffusing
element
DOPE DIFFUSER
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TOOL SPREAD
Tool Spread TBG
Drill Pipe
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Tool Spread CSG
DOPE DIFFUSER
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Diffusing Element (the patent)
DIFFUSING ELEMENT
1st hole
volume/W
ml
2 3/8” 1.42
2 7/8”
1.83
3 1/2”
2.20
4”
2.51
4 1/2”
2.82
5”
3.13
5 1/2”
3.45
6 5/8”
4.16
7”
4.43
W
last hole
2 3 /8 ”
2 7 /8 ”
3 1 /2 ”
4”
4 1 /2 ”
V A M
5 .8
6 .6
7 .8
8 .5
9 .5
H Y D R IL L
C S
5 .8
5 .9
7 .0
7 .0
7 .1
W
cm
4 ½ ”
5”
5 1 /2 ”
6 5 /8 ”
7”
V A M
-
1 0 .8
1 1 .0
1 1 .5
1 2 .0
H Y D R IL L
C TS
8 .2 5
8 .2 5
8 .2 5
-
1 2 .0 7
W
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cm
DOPE DIFFUSER
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Description
The Dope Diffuser is used in running
completion to obtain an even distribution
of a weighed quantity of the COMPOUND
on the threads
 It is also particularly suitable for the
drillpipe, giving unquestioned logistic
and economic advantages

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OPERATION

Once the Tool Spread is positioned
in the box only a few seconds are
needed for even calibrated
distribution of the compound on the
surface of the threads
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Failure analysis (1 of 3)
Systematic use of the
compound following the
procedure ensures:

Human error in using the compound in
the wrong way is reduced to zero
when there are a number of buckets
on the rig floor.
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Failure analysis (2 of 3)

Application using a brush gives uneven
distribution and allows contamination: with
resultant seizure and loss of the thread ;
 The Dope Diffuser protects the compound
from foreign bodies as it is enclosed in the
distributor and eliminates the risk of brushes
falling accidentally down the well.
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Failure analysis (3 of 3)

The compound has a lubricating power
corresponding to a precise screwing torque.
 NEVER add oil or diesel fuel to improve the
spreading characteristics as this changes the
power of the lubricant.
 The Dope Diffuser mixes the compound
eliminating the gravity separation of heavy
metals from oil and grease.
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Economic analysis
With the Dope Diffuser savings are made:
 The quantity is measured out for the
connection only and excess application
as in the traditional method is
eliminated.
 The excess that usually falls down the
well creates blockages that make it
difficult (and expensive) to send down
work-over or drilling equipment.
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Safety Analysis
The compound no longer SPILLS over
the rig floor because the entire
application process is enclosed;
This keeps the work area clean which is
of basic importance for safety and
stops the operational personnel from
slipping .
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Environmental Impact Analysis
The elimination of spills is also essential
for respect of the environment;
The Dope Diffuser prevents anything from
the greasing process from falling into
the sea in Off Shore installations and
into the ground On Shore.
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Thread Compound
Background (1 of 3)
Historically the compound used both in
drilling and production consisted of
lubricating grease made from petroleum
and containing heavy metals such as
LEAD, ZINC, COPPER for:
1) Protection of metal to metal contact and
seizing up in situations of high stress;
2) Secure seal against high internal
pressures.
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Thread Compound
Background (2 of 3)
Ductility and malleability are advantageous
properties of LEAD, ZINC and COPPER,
allowing them to:
1)
2)
Compact and deform without fracturing
and prevent wear and damage to metal
surfaces;
Form an effective seal between the
threads and/or shoulders of the
connections (pipes and drill pipes)
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Thread Compound
Background (3 of 3)
The compound
OCCUPIES the spaces
between the tips and
roots of the threads
AND INFILTRATES
between the contact
surfaces of threads and
shoulders, under
screwing torque before
and after drilling.
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DOPE DIFFUSER
FURTHER INFORMATION...
JANUS OILfield TEChnology s.r.l.
Loizzi Gianfranco
Tlc + 39 333 3296353
 E mail: [email protected]

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