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KIRTLAND AIR FORCE BASE ALBUQUERQUE, NEW MEXICO ...

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APPENDIX B<br />

Length of screened interval<br />

Depths of screened intervals<br />

Depth to water<br />

Total depth of well<br />

Surface completion of well<br />

Treatment length<br />

The above parameters will determine the size and type = of injection equipment required to introduce the<br />

PFD/water solution into the well. This SOP is applicable to the use of Aqua-Clear PFD.<br />

Chemical mixing<br />

Solution preparation is accomplished using the following procedures:<br />

To determine the amount of Aqua-Clear PFD to use, perform this simple calculation:<br />

Aqua-Clear PFD (gallons) = 0.002 x water volume in screened interval (gallons).<br />

The recommended concentration of Aqua-Clear PFD is 0.2% by volume. This equates to<br />

1 gallon of Aqua-Clear PFD for every 500 gallons of water.<br />

Due to the high viscosity of the Aqua-Clear PFD, it is necessary to pre-mix the dispersant<br />

with water (from an approved source) at the surface before injecting the solution into the<br />

well. This pre-mix solution should be of an adequate volume to allow even distribution<br />

throughout the treatment zone, and dictates the size of the injection equipment to be used.<br />

This pre-mix solution could be anywhere from 50 to 300 gallons and will be determined<br />

onsite. The concentration of the solution will be stronger than the recommended<br />

concentration to ensure there is enough Aqua-Clear PFD in the pre-mix solution to achieve<br />

the desired concentration of 0.2% in the treatment zone when mixed with water.<br />

To determine the volume of water required to prepare the pre-mix solution, perform the<br />

following calculations:<br />

Well Volume (gallons) = r 2 h(7.48) x 2<br />

Where: r = casing radius in feet (ft)<br />

h = height of water column associated with treatment length (ft)<br />

This calculation takes into account the screen-area casing volume, water in the filter pack, and<br />

water in the formation interface. Use this volume in the calculation to determine the amount of<br />

Aqua-Clear PFD to be used (step 1). The manufacturer recommends doubling the calculated<br />

volume.<br />

Kirtland AFB<br />

SOPs for Field Investigations B-48 April 2004

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