Packer Application Worksheet
Page 1 of 2
General Information - please fill out for each different well size and application
DASCO
Customer: ____________________________ +202 2508 4914
Phone: _____________________ 26/07/2017
Date: __________
DASCO
Company: ____________________________ Fax: +202 2508 4903
_____________________ Project: ________
Orascom
Plot 7378, Region C, Al-Mokattam,
Address: ____________________________ info@nedc-eg.com
Email: _____________________
Upper Hill, Cairo, Egypt
____________________________ Comments:
The Current Application is for: ■ Water well
! ! Oilfield
■
! Pump testing ! Zone sampling ! Hydrofracturing ! External Casing Packers (ECP)
■
! Air-Lifting ! Wireline ! Other: __________
Raw water Injection ! Drill Stem Testing (DST)
! Injection at __________
■ 150 [psi] over the hydrostatic of __________
4320 [psi] ! Coiled Tubing
■
! Grouting at __________ [psi] over the hydrostatic of __________
4320 [psi] ! Hydrofracturing
! Leachate sampling ! Low permeability : range ____________
■ ! Other: ____________
The packer will be set in: ■
! Casing ! Open hole
Casing ID ______________
8.921 [inch] Open hole ID (range) __________ [inch]
Depth of casing __________
984 [feet] Depth of hole ________________ [feet]
!
✔
A sketch of the well casing, screens, and their depths is included.
The maximum depth the packer will be used (Set Depth) is __________
1150 [feet]
The Static Water Level (SWL) is __________
1246 [feet]
Submergence of lowest packer = Set Depth - SWL = __________ [feet of water]
The Maximum Differential Pressure possible (from one end of packer to the other) and
the minimum pressure rating for the packer is the
Injection pressure at the packer over the hydrostatic = __________ [psi]
Total pump test drawdown = Submergence of packer = __________ [psi]
Surface pressure on grout + grout column - Submergence of the packer = __________ [psi]
The smallest hole the packer must pass through is __________
8.921 [inch].
How many holes will be tested? __________ The packer will be used in each hole about __________ times.
The Water or Fluid Conditions:
! Nominal (drinking water, not contaminated)
! Acids ! Alkalis ! Organics ! Oils ■
! Other: __________
Raw water Injection
The water temperature is: ■
! Room temperature ! High temperature = __________ [ºF]
Required Sampling and Measuring of:
! Liquid ! Vapor ■
! Pressure ! Temperature ■
! Flow ! Other: __________
Raw water Injection
Number of packers:
■
! Single packer ! Two packers ! Three or more packers: __________
! Guard zones (around the zone of interest) with ________ packers
Preferred Metal of construction:
! Aluminum and/or stainless 304/303 (standard construction) ! Steel is OK
! All stainless 304/303 ■ Other stainless types: __________
! 316L
! Anti-galling Nitronic 60 / stainless steel combinations
! All copper ! Aluminum bronze ! Other metals or rigid materials: __________
Reinforced Rubber / elastomers of choice:
■
! Natural rubber for water applications, unless contaminants require:
! Neoprene rubber ! Nitrile rubber ! Fluorocarbon ! Teflon* (DuPont) covers
Preferred seal length of packer against the borehole or casing:
■
! Manufacturer recommended ! 3x hole size, min. ! Other: __________
Raw water Injection
Delivery Schedule: need equipment on site by ___________
General Terms & Conditions of Baski, Inc. are: ■ Acceptable
! ! Not Acceptable (please explain)
Inc. 1586 South Robb Way • Denver, Colorado 80232 USA www.baski.com
Phone 1-303-789-1200 • 1-800-55-BASKI • FAX 1-303-789-0900 info@baski.com
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Packer Application Worksheet
Page 2 of 2
Additional (Application-Specific) Information - please attach additional sheets as needed
Customer: ______________________
DASCO 26/07/2017
Date: ___________
Comments: Project: _________
Orascom
Pumping:
Pump size: OD = __________ [inch] Length = ____________ [inch]
Pump connection size: __________ Number of leads: __________
! Pump water from below the packer (pump may be above or below the packer)
! Pump water from above the packer (pump is placed above the packer). Packer may be
lowered into the well on a cable, inflated, and the cable tension released to allow pump installation.
If a pump is placed above the packer, there must be some mechanical connection to support the packer.
! Pump shroud needed. A pump shroud surrounds and protects the pump, providing a
means of supporting the packer below the pump, and directing water past the motor for cooling.
! Pump water from between two packers (pump may be above or between the packers). It is preferred to
have the pump above the packers, for ease of sealing leads.
Transducers: please provide for each type of transducer
Transducer maximum OD = _________ [inch] Transducer length = ___________________________ [inch]
Number of leads: ____________________ Diameter of wires (including insulation): ____________ [inch]
Is there a vent tube? ! yes ■ no
!
A pressure transducer transfer tube is a tube (like 1/4 inch nylon) that has one end connected to the end of the transducer
and the other end sealed into the zone of interest. It is easier to assemble straddle packer configurations with transducer
transfer tubes since the transducers are above the packer, and only the tubes go into the zone. Some variable “offset” can
result in pressure readings because the tube may have air in it, which compresses and occupies less volume of the
transfer tube as the hydrostatic pressure increases. This offset can be reduced or eliminated by filling the tube with water.
Water can be held in the transfer tube by a specialized “porous tube end” installed at the (zone) end of the tubing.
Is a pressure transducer tube acceptable? ! yes ■ no
!
Do you need tranducer protectors, carriers, or mounting hardware? ! yes ■ no
!
Inflation: !
■ single inflation line ! multiple inflation lines
Separate inflation for each packer may be preferred for packers used in open holes, since each packer may be inflated to
different inflation pressures to assure proper seating in the borehole. A single inflation line may be satisfactory for multiple
packers set in casing, if the maximum difference in packer set depths is not over a few hundred feet.
!
■ Gas inflation
For gas inflation, use Nitrogen. Never use oxygen, carbon dioxide or flammable gases. Compressor air may have
hydrocarbons from the compressor cylinder lubricants. If the packer fails, these hydrocarbons may be introduced into the
well, with possible adverse environmental and legal consequences. Inflation tubing can be standard size nylon, stainless
steel, or copper tubing; or small diameter high-pressure thermoplastic hose. Pressure gauges should be of an accuracy
and range appropriate for the anticipated inflation pressures of the packer. Pressure gauges should only be operated in the
first 2/3rds of their range.
! Liquid inflation
If the maximum differential pressure (listed under “General information”) is more than 300 psi, use liquid inflation.
When utilizing liquid inflation, the packer element stretch pressure to the borehole or casing wall must be more than the
Liquid Inflation Head (LIH). Check with us for the stretch pressure of the packer you plan to use in this application.
If the stretch pressure is less than the LIH, the water in the inflation line above the static water will keep the packer
expanded. If this happens, you may not be able to retrieve the packer. This can be advantageous for permanent
installations. Dual inflation tubing from the surface to the packer can deflate packers in these cases. Single line inflation
is possible with the use of specialized valves. A variety of liquid pumps have been used for inflating packers including
positive displacement pumps, mud pumps, car wash pumps, and even fire engine pumps! Accumulators can be used to
provide a relatively constant pressure liquid to packers. Downhole liquid inflation chambers can provide the convenience of
gas inflation at the surface, and high liquid pressure to the packer required in some applications. Liquid intensifiers use
100 psi compressor output to supply liquid pressures to 10,000 psi. Both the accumulators and liquid intensifiers can be
set up for long term packer pressurization. Contact us regarding additional information as needed.
Inc. 1586 South Robb Way • Denver, Colorado 80232 USA www.baski.com
Phone 1-303-789-1200 • 1-800-55-BASKI • FAX 1-303-789-0900 info@baski.com
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