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API Spacer Wettability Tests May 30 th – June 10 th, 2013 Mud-Spacer Compatibility Test & Goniometer Contact Angle Test Wettability Test with Stirred Fluid.

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Presentation on theme: "API Spacer Wettability Tests May 30 th – June 10 th, 2013 Mud-Spacer Compatibility Test & Goniometer Contact Angle Test Wettability Test with Stirred Fluid."— Presentation transcript:

1 API Spacer Wettability Tests May 30 th – June 10 th, 2013 Mud-Spacer Compatibility Test & Goniometer Contact Angle Test Wettability Test with Stirred Fluid Loss Apparatus SSST Test & Goniometer Contact Angle Test on Final Mixture SSST Test & Goniometer Contact Angle Test on Final Mixture (rerun)

2 Spacer-Mud Compatibility Test & Goniometer Contact Angle Test Beaker Size (ml)150 Mud:Spacer Volume Percent Mud:Spacer Grams Rheologies at Temperature ( 190 degF) Visual Observations PvYp Separat ionSettling Floccul ation Baseline Average Treated Slides 6003002001006030201063 yes/no 1000228.690.0064483222181412 10 399 955217.2611.9764342618141088662410 YesNo 7525171.5259.8742241812866444186 YesNo 43.8577.93 50 114.35119.75543426181412108662410 YesNo 41.7774* 257557.17179.6260383020161210 882711 YesNo 42.7972.93 59511.43227.526444301812108866395 YesNo 41.4130.76 01000.00239.506848402014106644426 * Goniometer won’t take measurement, contact angle was estimated to be 74 degree

3 Stirred Fluid Loss Apparatus Measure contact angle baseline on goniometer – Metal slide average contact angle = 73.02° – Glass slide average contact angle = 38.56° Mud coated on both slide (Atmosphere Temp) Spacer conditioned at 190° in stirred fluid loss apparatus Glass slide became completely water wet Metal slide had a average contact angle of 83.25°

4 SSST – First Run Spacer Added (ml) Spacer (%)ConductivityBaseline 00.00125 6023.10125 8028.620125 10033.355125 16044.490125 18047.495125 20050.096125 22052.497125 24054.597125 26056.595125 28058.397125 30060.097125 32061.597125 34063.098125 36064.3100125 38065.5100125 40066.7100125 42067.7101125 44068.8103125 46069.7104125 48070.6110125 50071.4110125 52072.2111125 54073.0113125 56073.7115125

5 Goniometer - Final SSST Mixture Treated No Coating100% Mud Coated for 10 sec RinseWipeRinseWipe Avg. Base Avg. C.Angle Avg. Base Avg. C.Angle Avg. Base Avg. C.Angle Avg. Base Avg. C.Angle Glass41.6978.8240.3062.5043.6963.8145.6936.53 Metal78.4286.6780.8585.6583.9690.32-- Wiped slides show lower contact angle (water-wet) compared with rinsed ones. Glass slides coated with mud before dipping into SSST final mixture give a lower contact angle. To reinforce this observation, same test was rerun as shown in next page. Metal slides didn’t show similar results as glass ones. Metal slide became more oil-wet after treated with mud.

6 SSST – Rerun Spacer Added (ml) Spacer (%)ConductivityBaseline 00.00125 209.12125 4016.72125 6023.14125 8028.620125 10033.360125 12037.595125 14041.2104125 16044.4105125 18047.4108125 20050.0110125 22052.4111125 24054.5116125 26056.5119125 28058.3119125 30060.0120125 32061.5120125 34063.0121125 36064.3121125 38065.5124125 40066.7124125 42067.7124125 44068.8125 46069.7125 48070.6125 53072.6125

7 Goniometer - Final SSST Mixture Treated (Rerun) No Coating 100% Mud Coated for 10 sec 100% Mud Coated for 10 min RinseWipeRinseWipeRinseWipe Avg. Base Avg. C.Angle Avg. Base Avg. C.Angle Avg. Base Avg. C.Angle Avg. Base Avg. C.Angle Avg. Base Avg. C.Angle Avg. Base Avg. C.Angle Glass28.8372.2429.9455.4027.1369.1429.8251.0334.8383.1727.2445.85 Metal86.4388.7784.9783.4985.8786.43------ New glass slides yield to a baseline around 30°, used glass slides cleaned by IPA and DI water yield to a base line around 43° Wiped slides show lower contact angle (water-wet) compared with rinsed ones. Glass slides coated with mud before dipping into SSST final mixture give a slightly lower contact angle, which repeats the result in previous test. However, glass slide coated with mud for 10 minutes gave a higher contact angle (oil-wet). Time duration of treatment may have a big effect on wettability result. Tests can be run with metal slides are limited by the quantity of metal slides available in lab.


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