PRODUIT "TRU-TAG" AMELIORE

IMPROVED TRU-TAG TAGBAR

Description

CA 02702554 2010-05-03

IMPROVED TRU-TAG TAGBAR
Concept:

The Tru-Tag tagbar concept is the ability to use in any way, a device that
will
determine, aid or assist in the ability to determine the proper alignment of
the rotor to the
stator of a Progressive Cavity pump with using a locating device that
indicates the depth of
measurement by means of weight gain/loss, regardless of where it is placed in
the wellbore
throughout the tubular string. The design of the Tru-Tag system is intended to
be used
below the Progressive Cavity pump but is not restricted in concept and design
to be adapted
anywhere throughout the tubular string in the future.

Design:
The "Tru-Tag" tagbar is designed for the purpose of measuring the exact
placement of the Progressive Cavity pump rotor in the stator once ran in a
wellbore.

The Tru-Tag tagbar is a two piece device, the first part is what is called the
"Mandrel body" (5) and the second part is called the "Locating device" or
"Locking device"
(2).

The Tru-Tag tagbar Locating device or Locking device (2) is attached by
means of welding/threading/or any other form of adhesion to the rotor with the
ability of
being able to pass through the stator with ease and not damaging the stator or
any part of the

tubular string. The Tru-Tag tagbar Locating device (2) will pass into the
Mandrel body (5)
that will be threaded/welded/ or any other means of attachment thus stopping
the rotor (13)
from passing through the stator (14). The Locator device (2) will now rest in
the Locator
device seat (6) (also referred to as the Locking device seat). This function
will also ensure
that the rotor may never be lost in the well bore through the tagbar even if
the rod string is
parted or rotor is broken.

Now with the Locating device (2) inserted into the Mandrel body (5) the rod
string can be hoisted up to determine the rod string weight alone. The Locator
key (10) will
hold the indicator up to 3-4 daN over string against the Locator key recess
(1), before being
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released and pulling free with the use of the Bellville washer (12)
resistance. Prior to
pulling free it will be measured on the rod string from once the average rod
string weight
started to gain and now an exact measure will be known where the rotor (13)
lays from
inside the stator (14).

Fluids and solids will be able to pass into or out of the Mandrel body (5)
through the By-Pass ports (4) and hollow Locating device seat (6), thus
allowing for
circulation out the bottom of the tubular string.

The "Tru-Tag" tagbar will have full flow, as not to impede the flow of fluids
and/or solids into/out of the stator. Will be balanced on the Progressive
Cavity pump as not
to affect the performance of the pump or cause any wear to any part of the rod
and tubular
string.

The Titus Tru-tag was designed because of the indecisive techniques that a
rotor was spaced out properly in a Progressive cavity pump. Other devices
utilize only the
weight of the rod string and rotor to stop moving through the stator to
indicate that the rotor
is sitting on a tagging system and then a guess of the exact rod weight and
rotor placement
into the stator was then taken. The problem with using this method is not
being sure that
the rotor is travelling all the way down to the tagging system and possibly
stopping prior to
there and giving a false measurement of where the tagging system really is
located. The
advantage of the Tru-Tag system is that it will lock in the rotor when
positioned into the
stator and allow for an exact measurement of where the rotor is to the stator.

Attached Drawings:

Drawing 1 provides detailed side and longitudinal sectional views of the Tru-
Tag tagbar, including the Mandrel body (5) and Locking or Locating device (2);

Drawing 2 provides a pictorial view of the Locking device (2) engaged with
the Mandrel body (5);

Drawing 3 provides detailed views of the Mandrel body (5) shown in
Drawing 1;

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Drawing 4 provides a cross-sectional view of the Mandrel body (5) shown in
Drawing 1;

Drawing 5 provides detailed views of the Locking Device (2) shown in
Drawing 1;

Drawing 6 provides detailed views of a Locator key (10) shown in Drawing
1;

Drawing 7 provides detailed views of a Belleville washer (12) shown in
Drawing 1; and

Drawing 8 provides detailed views of a Locator or Spring retainer cap (11)
shown in Drawing 1.

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