TY - GEN
T1 - The effect of fracture characteristics on reduction of permeability by asphaltene precipitation in carbonate formation
AU - Zekri, Abdulrazag Y.
AU - Shedid, Shedid Ali
N1 - Funding Information:
The authors would like to acknowledge the financial support of Abu-Dhabi National Oil Company (ADNOC). Special thanks to Ms. Einas Mokhtar for her help to perform the flooding experiments. We also thank Ibrahim El-Magrabi for performing the image analysis work.
Publisher Copyright:
© Society of Petroleum Engineers - SPE Asia Pacific Oil and Gas Conference and Exhibition 2003, APOGCE 2003. All rights reserved.
PY - 2018
Y1 - 2018
N2 - Crude oils produced in many parts of the world contain asphaltene. Asphaltene plugging is a known cause of near-wellbore formation damage. The deposition phenomenon of asphaltene has been extensively investigated in homogenous porous media. However, we have not found any reported experimental work on asphaltene plugging in naturally or artificially fractured reservoirs. The main objective of this study is to investigate the effect of fracture characteristics on reduction of permeability by asphaltene deposition in carbonate formation. A single fracture system is made with different fractures characteristics such as porosity, permeability, and fracture angel using saw-cut limestone core samples with metallic plate. The fracture aperture was kept constant for most of the studied systems. The effect of flow rate, fracture angel, matrix to fracture permeability, asphaltene concentration and the state of stress on the retained permeability is presented. Different fracture angle orientations of 45°, 90°, and 180° relevant to the axis of the flow were investigated. A non-invasive imaging technique-Scanning Electron Microscopy (SEM) was employed to visualize changes on the surface of the fracture as a result of aspheltenic crude oil flow through the system.
AB - Crude oils produced in many parts of the world contain asphaltene. Asphaltene plugging is a known cause of near-wellbore formation damage. The deposition phenomenon of asphaltene has been extensively investigated in homogenous porous media. However, we have not found any reported experimental work on asphaltene plugging in naturally or artificially fractured reservoirs. The main objective of this study is to investigate the effect of fracture characteristics on reduction of permeability by asphaltene deposition in carbonate formation. A single fracture system is made with different fractures characteristics such as porosity, permeability, and fracture angel using saw-cut limestone core samples with metallic plate. The fracture aperture was kept constant for most of the studied systems. The effect of flow rate, fracture angel, matrix to fracture permeability, asphaltene concentration and the state of stress on the retained permeability is presented. Different fracture angle orientations of 45°, 90°, and 180° relevant to the axis of the flow were investigated. A non-invasive imaging technique-Scanning Electron Microscopy (SEM) was employed to visualize changes on the surface of the fracture as a result of aspheltenic crude oil flow through the system.
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M3 - Conference contribution
AN - SCOPUS:85057950380
SN - 9781555639617
T3 - Society of Petroleum Engineers - SPE Asia Pacific Oil and Gas Conference and Exhibition 2003, APOGCE 2003
BT - Society of Petroleum Engineers - SPE Asia Pacific Oil and Gas Conference and Exhibition 2003, APOGCE 2003
PB - Society of Petroleum Engineers
T2 - SPE Asia Pacific Oil and Gas Conference and Exhibition 2003, APOGCE 2003
Y2 - 9 September 2003 through 11 September 2003
ER -