The name is absent



Chapter 3. Characterization of emulsions by NMR.............................................37

3.1. Introduction...............................................................................................37

3.2. T2 distribution from CPMG measurement.................................................38

3.2.1. Introduction...................................................................................................38

3.2.2. Characterization Ofemulsions with CPMG measurement.............................40

3.3. Drop size distribution from NMR restricted diffusion measurement...........43

3.3.1. Introduction...................................................................................................43

3.3.2. Drop size determination from PGSE measurement.......................................46

3.3.3. Drop size determination Ofdiluted bitumen emulsion....................................49

3.4. T1 weighted one-dimensional (1-D) MRI profile measurement..................53

3.4.1. Introduction...................................................................................................53

3.4.2. T1 weighted 1-D MRI profile measurement...................................................54

3.5. Materials and Methods..............................................................................57

3.5.1. Materials.......................................................................................................57

3.5.2. Emulsion Preparation....................................................................................58

3.5.3. Bottle test and demulsifier selection..............................................................60

3.5.4. NMR measurement of emulsion....................................................................60

3.6. Resultsand Discussions...........................................................................60

3.6.1. Demulsifier selection from bottle test............................................................60

3.6.2. Emulsion characterized by CPMG T2 distribution measurement...................61

3.6.3. Drop size distribution from PGSE restricted diffusion measurement.............67

3.6.4. Phase fraction profile from 1-D T1 weighted MRI profile measurement.........69

3.6.5. Sedimentation rate from 1- D T1 MRI weighted profile measurement............80

3.7. Reference.................................................................................................84

Chapter 4. Clay wettability and zeta potential characterization...........................86

4.1. Rag layer and clay wettability....................................................................86

4.2. Wettability test of kaolinite.........................................................................90

4.2.1. Materials and methods..................................................................................90

4.2.2. Effectofnaphthenate....................................................................................91

4.2.3. Effect of naphthenate concentration, NaOH and Na2SiO3.............................94

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