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Information Seminar Paper

Title

NANO-BIO MATERIAL EOR ASSISTED MECHANISMS: A MICRO-SCALE STUDY IN SHALY SYSTEMS

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 Start Page | End Page

Abstract

 ENHANCED OIL RECOVERY (EOR) MECHANISMS INVOLVED IN BIOMATERIALS OR NANOPARTICLES INJECTION HAVE BEEN PREVIOUSLY STUDIED BY MANY RESEARCHERS. HOWEVER, WHAT RECOVERY MECHANISMS ARE INVOLVED WHILE NANO AND BIO MATERIALS ARE USED SIMULTANEOUSLY, IS STILL AN OPEN QUESTION. TO THIS END, A SERIES OF INJECTION TESTS PERFORMED ON MICROMODEL CONTAINING SHALE STRIKES. THREE TYPES OF BIO-MATERIALS INCLUDING BIOSURFACTANT, BIOEMULSIFIER AND BIOPOLYMER BESIDE SIO2 NANOPARTICLES AT 3000 PPM CONCENTRATION WERE USED AS INJECTION FLUIDS. THE MICROSCOPIC AS WELL AS MACROSCOPIC EFFICIENCY OF DISPLACEMENTS WERE OBSERVED FROM ANALYSIS OF IMAGES RECORDED DURING THE TESTS. MICROSCOPIC OBSERVATIONS REVEALED DIFFERENT MECHANISMS RESPONSIBLE FOR OIL RECOVERY INCLUDING: WETTABILITY ALTERATION, THINNING OIL FILM, IFT REDUCTION AND WATER IN OIL EMULSION FORMATION. ALSO THE RESULTS SHOW THAT PRESENCE OF SHALES CAUSE EARLY BREAKTHROUGH AND ULTIMATE OIL RECOVERY REDUCTION. SHALES ACT AS FLOW BARRIERS AND ENHANCE INJECTION FLUID VISCOUS FINGERING. OIL RECOVERY AFTER BREAKTHROUGH IN SHALY SYSTEMS IS PROGRESSIVE AND CONSIDERABLE VOLUME OF OIL IN PLACE IS RECOVERED AFTER BREAKTHROUGH. THE HIGHEST EFFICIENCY, 78%, OBSERVED WHILE INJECTING ONE PORE VOLUME OF BIOPOLYMER AND SIO2 NANOPARTICLES. THIS WORK ILLUSTRATES THE MECHANISMS INVOLVED IN NANO-BIO MATERIAL-CRUDE OIL DISPLACEMENTS.

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