Presentation on theme: "API Spacer Wettability Tests May 30th – June 10th , 2013"— Presentation transcript:
1 API Spacer Wettability Tests May 30th – June 10th , 2013 Mud-Spacer Compatibility Test & Goniometer Contact Angle TestWettability Test with Stirred Fluid Loss ApparatusSSST Test & Goniometer Contact Angle Test on Final MixtureSSST Test & Goniometer Contact Angle Test on Final Mixture (rerun)
2 Spacer-Mud Compatibility Test & Goniometer Contact Angle Test Beaker Size (ml)150Mud:Spacer Volume PercentMud:Spacer GramsRheologies at Temperature ( 190 degF)Visual ObservationsPvYpSeparationSettlingFlocculationBaseline AverageTreated Slides6003002001006030201063yes/no228.690.0064483222181412399955217.2611.973426824YesNo7525171.5259.8742443.8577.9350114.35119.755441.7774*57.17179.623816271142.7972.9311.43227.524441.4130.76239.506840* Goniometer won’t take measurement, contact angle was estimated to be 74 degree
3 Stirred Fluid Loss Apparatus Measure contact angle baseline on goniometerMetal 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 apparatusGlass slide became completely water wetMetal slide had a average contact angle of 83.25°
4 SSST – First Run Spacer Added (ml) Spacer (%) Conductivity Baseline 0.01256023.18028.62010033.35516044.49018047.49520050.09622052.49724054.526056.528058.330060.032061.534063.09836064.338065.540066.742067.710144068.810346069.710448070.611050071.452072.211154073.011356073.7115
5 Goniometer - Final SSST Mixture Treated No Coating100% Mud Coated for 10 secRinseWipeAvg. BaseAvg. C.AngleGlass41.6978.8240.3062.5043.6963.8145.6936.53Metal78.4286.6780.8585.6583.9690.32-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.
7 Goniometer - Final SSST Mixture Treated (Rerun) No Coating100% Mud Coatedfor 10 secfor 10 minRinseWipeAvg. BaseAvg. C.AngleGlass28.8372.2429.9455.4027.1369.1429.8251.0334.8383.1727.2445.85Metal86.4388.7784.9783.4985.87-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.