The Stradasnap Packer consists of a
modified Snapset II Packer combined
with an AS-III Packer. A Stradasnap
Packer is used for selectively treating
short intervals of casing perforations to
evenly break down the entire formation.
The span covered is determined by the
spacing between the two sets of packing
elements and is adjustable to any
distance down to eighteen inches.
The bottom of the Stradasnap Packer is
plugged by using an Equalizing Standing
Valve (or similar device). A Spot Control
Valve or Acid Valve can be run above the
Stradasnap Packer to control the tubing
hydrostatic pressure across the perforations
and contain the acid in the tubing when
moving the packer to another perforation.
After locating the Stradasnap Packer
across the lower most perforation,
the Stradasnap Packer is set and the
perforation is treated. Straight pick-up of
the tubing releases the Stradasnap Packer
to be moved up to the next perforation.
Repeat the setting procedure to reset.
When retrieving the Stradasnap Packer,
retrieve the Spot Control Valve or Acid
Valve so that tubing fluid can be dumped
through the ports between the packing
elements to prevent pulling a wet string.
Special Features
> Combination of existing packers
> Straight pull release
> Adjustable spacing with pup joint
modified Snapset II Packer combined
with an AS-III Packer. A Stradasnap
Packer is used for selectively treating
short intervals of casing perforations to
evenly break down the entire formation.
The span covered is determined by the
spacing between the two sets of packing
elements and is adjustable to any
distance down to eighteen inches.
The bottom of the Stradasnap Packer is
plugged by using an Equalizing Standing
Valve (or similar device). A Spot Control
Valve or Acid Valve can be run above the
Stradasnap Packer to control the tubing
hydrostatic pressure across the perforations
and contain the acid in the tubing when
moving the packer to another perforation.
After locating the Stradasnap Packer
across the lower most perforation,
the Stradasnap Packer is set and the
perforation is treated. Straight pick-up of
the tubing releases the Stradasnap Packer
to be moved up to the next perforation.
Repeat the setting procedure to reset.
When retrieving the Stradasnap Packer,
retrieve the Spot Control Valve or Acid
Valve so that tubing fluid can be dumped
through the ports between the packing
elements to prevent pulling a wet string.
Special Features
> Combination of existing packers
> Straight pull release
> Adjustable spacing with pup joint
