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Ananthanarayanan, P. N.
- Improving Recovery by Altering Wettability from Oil Wet to Surfactant Wet
Abstract Views :177 |
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Authors
Affiliations
1 Department of Petroleum Engineering, Amet University, Chennai, IN
2 Department of Mechanical Engineering, Bharath University, Chennai, IN
1 Department of Petroleum Engineering, Amet University, Chennai, IN
2 Department of Mechanical Engineering, Bharath University, Chennai, IN
Source
Indian Journal of Science and Technology, Vol 8, No 11 (2015), Pagination:Abstract
Surfactants play an important role to alter wettability in any reservoir. Adsorption of surfactants onto reservoir surface will reduce the contact between water and oil which indeed has less impact on Interfacial tension. Oil wet reservoirs are specifically preferred than water wet due to high oil saturation. At the same time extracting oil from oil wet reservoir is difficult due to its wetting nature. The only way to extract oil is by altering wettability from oil wet. The aim of this work is to extract more oil with less adsorption by altering oil wet to surfactant wet. Wettability of sandstone has been chosen to alter from oil wet to surfactant wet. Surfactants of low concentration, which is less than CMC (Critical Micelle Concentration) has been introduced before surfactant flooding during water flooding to make core surfactant wet. The recovery of oil during water flooding is 0.2 Pore Volume (PV). This has been increased to 0.5 pore volume by making it surfactant wet and adsorption has been reduced to 0.5 pore volumes.Keywords
Adsorption, CMC, Surfactant Wet, Wettability- Investigation of Cationic Nonionic Blend to Alter Wettability for Carbonate Reservoirs
Abstract Views :168 |
PDF Views:0
Authors
Affiliations
1 Department of Petroleum Engineering, Amet University, Chennai-603112, IN
2 Department of Mechatronics, Bharath University, Chennai, IN
1 Department of Petroleum Engineering, Amet University, Chennai-603112, IN
2 Department of Mechatronics, Bharath University, Chennai, IN
Source
Indian Journal of Science and Technology, Vol 8, No 12 (2015), Pagination:Abstract
Alteration of wettability for a carbonate reservoir is one of the complex challenges faced by petroleum engineers. Cationic surfactants are the only surface agents which have shown successful results with minor exceptions. Recently, surfactant blends has shown ability to posses stability at high temperatures with low Critical Micelle Concentration (CMC). The aim of this research work is to compare the ability of Cationic nonionic blends with cationic surfactants for improving recovery in carbonate reservoirs. The surfactant blends were chosen to alter wettability for a Carbonate core is Cetyltri Alkyl Bromide (CTAB) with Ethoxcylated Alcohol (EO). The concentration of cationic surfactant CTAB was selected based on Krafts point and for nonionic EO on phase separation process. The results were observed on core flooding apparatus. Surfactant blend has shown 0.75 pv (pore volume) of recovery with 2 pv of injection and CTAB of 0.55 pv with 3 pv injectionKeywords
Adsorption, Cationic Surfactant, CMC, Krafts Point, Nonionic Surfactant, Surfactants Blends, Wettability- Investigation of Enhanced Oil Recovery (EOR) Surfactants on Clay Mixed Sandstone Reservoirs for Adsorption
Abstract Views :222 |
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Authors
Affiliations
1 Department of Petroleum Engineering, AMET University, Chennai, 603112, IN
1 Department of Petroleum Engineering, AMET University, Chennai, 603112, IN
Source
Indian Journal of Science and Technology, Vol 8, No 14 (2015), Pagination:Abstract
Adsorption of surfactants on sandstones leads to reduce in recovery efficiency of oil. This is caused mainly because of clay presence. Most of the water flooding projects has been stopped, when clay is present. Even surfactants are adsorbed due to clay. The aim of this research work is to reduce the adsorption of surfactants for different pH clay mixed sandstones. Three clay sandstones as crushed samples with different pH levels have been tested to observe the adsorption of Anionic surfactants Sodium Dodecyl Sulphonate (SDS) through bottle test. There was no significant adsorption found on pH 3 and above. Adsorption of SDS on pH 2 clay sandstone has reduced due to increase in alkalinity by application of Sodium Carbonate (Na2CO3).Keywords
Adsorption, Clay Sandstone, Surfactants, SDS, Wettability- Analysis on Capillary Pressure Curves by Wettability Modification through Surfactants
Abstract Views :285 |
PDF Views:0
Authors
Affiliations
1 Department of Petroleum Engineering, Amet University, Chennai - 603112, Tamil Nadu, IN
1 Department of Petroleum Engineering, Amet University, Chennai - 603112, Tamil Nadu, IN