POLYMER TEST KIT (CLAPPER METHOD) OFI PART No

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1 OFI Testing Equipment Polymer Test Kit (Clapper Method) Part # Instructions Page 1 of 4 POLYMER TEST KIT (CLAPPER METHOD) OFI PART No This test determines the Partially Hydrolyzed Polyacrylamide (PHPA) concentration in mud filtrates. The test involves measurement of the rate of ammonia generation while the mud filtrate is heated in the presence of sodium hydroxide solution. The ammonia is removed from the reaction vessel with a slow air purge and detected with a Dräger Tube. The approximate concentration of PHPA is determined by measuring the time required for the Dräger Tube to turn blue. The procedure can be used to analyze all filtrates except those containing some types of lignosulfonates and acrylate filtration control additives. Size: 17.5 x 13 x 10.0 inches (44.5 x 33 x 25.4 cm) Weight: 23 lbs 10 oz (10.7 kg) Components: # Filter Paper, 3 1/2 inch. 100/pkg # Street Ell, 1/8 inch # Dräger Tube, Ammonia, 5/a, CH20501, 10/box # Brush, Graduate, 10 3/4 x 1 1/2 inch # Cylinder, Graduated, 50 ml x 1 ml, glass # Wash Bottle, 500 ml, Polyethylene # Syringe, 20 ml, plastic # Syringe, 60 ml, plastic # Thermometer, Metal, 8" stem, F # Stopwatch, Digital # Power Cable, 115 Volt # Receptacle, 115 Volt # Hot Plate, with Thermostat, 115 Volt, 325 Watt # Needle Valve, Male, # Flowmeter NA Cylinder, glass, without lip, 250 ml NA Beaker, stainless steel, 1200 ml NA Funnel, glass, 6 inch, long stem NA File, triangular, 5 inch NA Pump, Whisper 300, aquarium NA Tubing, Latex, 3/16" ID, foot NA NA Tubing, Plastic, 1/8" ID, foot Tubing, glass, 6 mm Reagent:

2 OFI Testing Equipment Polymer Test Kit (Clapper Method) Part # Instructions Page 2 of 4 # *Sodium Hydroxide sol'n, 5.0N (20%), 16 oz (UN1824) Procedure: NOTE: THE UNIT MUST BE CALIBRATED IN ORDER TO OBTAIN ACCURATE RESULTS! 1. Be sure the equipment is both clean and dry. 2. Obtain 10 cm 3 of mud filtrate using an API filter press. 3. Remove the reaction glass 250 ml cylinder located inside the beaker, from the kit. Fill the stainless steel beaker with approximately 800 cm 3 of water, and place on the hot plate. Heat the water to F. The temperature may be controlled with the hot plate thermostat and by the addition of water from the wash bottle. 4. Break both ends of the Dräger tube and insert (with the numbers increasing from bottom to top) in the tubing. Attach the outlet tubing from the glass 250 ml cylinder. (no. 3 in figure 1). 5. Fill a 50 cm 3 syringe with 40 cm 3 of 20% sodium hydroxide solution and inject into the glass reaction cylinder (no. 4 in figure 1). Add 10 cm 3 of mud into cylinder 4 and seal and attach the cylinder to the holder apparatus. Start the air pump and the timer. 6. Record the time required for the blue color to reach the line marked "70" on the Dräger tube. 7. Compare the time required for the blue color to reach the "70" mark with the times on the calibration chart. Report the concentration of available polymer as pounds per barrel of product. 8. To clean the gas train, remove the glass reaction cylinder and rinse well with water. The other cylinder may be attached directly to the air pump and flushed with air for several minutes. Both glass cylinders should be thoroughly dried before re-using.

3 OFI Testing Equipment Polymer Test Kit (Clapper Method) Part # Instructions Page 3 of 4 Calibration: The procedure is performed with an aqueous solution containing 0.50 lb/bbl of high molecular weight Partially Hydrolyzed Polyacrylamide (PHPA) polymer. The air flow should be adjusted, using the adjustment at the base of the flowmeter and the excess flow valve, so that the time required for the blue color to reach the "70" mark is 24 to 25 minutes. This will require a flow of approximately 100 cc/min. There is some batch-to-batch variations in the Dräger tubes, but one calibration should be sufficient for all Dräger tubes having scale lengths of 51 to 56 mm. The unit should be recalibrated for Dräger tubes having scale lengths less than 51 or greater than 56 mm. When it is possible, always use Dräger tubes from only one batch to obtain the best accuracy. Batch numbers for Dräger tubes are located on the outside of each box. All Dräger tubes have an expiration date stamped on the outside of the box and should be used prior to this date. Time to "70" mark (Minutes) Polyacrylamide Polymer PHPA Less than 11 Greater than 1 11 to ' 01" to 15' 59" to ' 01" to 21' 59" to Greater than 30 Less than 0.2

4 OFI Testing Equipment Polymer Test Kit (Clapper Method) Part # Instructions Page 4 of 4 1. Drager Tube 2. Air Pump 3. Glass Cylinder, 250 ml Moisture trap 4. Glass Cylinder, 250 ml Reaction cylinder 5. Beaker, stainless steel 6. Hot Plate 7. Flowmeter 8. & 9. Air flow adjustments 10. Needle Valve, male 11. Stopper, no 8 Figure 1: Proper Assembly Of The Clapper Polymer Analysis Kit

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