A New Method for Calculating the Relative Permeability Curve of Polymer Flooding Based on the Viscosity Variation Law of Polymer Transporting in Porous Media
Wenchao Jiang,
Zhaowei Hou,
Xiaolin Wu,
Kaoping Song,
Erlong Yang,
Bin Huang,
Chi Dong,
Shouliang Lu,
Liyan Sun,
Jian Gai,
Shichun Yao,
Yunchao Wang,
Chunlin Nie,
Dengyu Yuan,
Qinghua Xu
Affiliations
Wenchao Jiang
Exploration and Development Research Institute, Petrochina Daqing Oilfield Company Limited, Daqing 163712, China
Zhaowei Hou
Exploration and Development Research Institute, Petrochina Daqing Oilfield Company Limited, Daqing 163712, China
Xiaolin Wu
Daqing Oilfield Company Limited, Daqing 163453, China
Kaoping Song
Unconventional Oil and Gas Science and Technology Research Institute, China University of Petroleum-Beijing, Beijing 102249, China
Erlong Yang
Ministry of Education Key Laboratory of Enhanced Oil and Gas Recovery, Northeast Petroleum University, Daqing 163318, China
Bin Huang
Ministry of Education Key Laboratory of Enhanced Oil and Gas Recovery, Northeast Petroleum University, Daqing 163318, China
Chi Dong
Ministry of Education Key Laboratory of Enhanced Oil and Gas Recovery, Northeast Petroleum University, Daqing 163318, China
Shouliang Lu
Exploration and Development Research Institute, Petrochina Daqing Oilfield Company Limited, Daqing 163712, China
Liyan Sun
Ministry of Education Key Laboratory of Enhanced Oil and Gas Recovery, Northeast Petroleum University, Daqing 163318, China
Jian Gai
Exploration and Development Research Institute, Petrochina Daqing Oilfield Company Limited, Daqing 163712, China
Shichun Yao
Exploration and Development Research Institute, Petrochina Daqing Oilfield Company Limited, Daqing 163712, China
Yunchao Wang
Exploration and Development Research Institute, Petrochina Daqing Oilfield Company Limited, Daqing 163712, China
Chunlin Nie
Exploration and Development Research Institute, Petrochina Daqing Oilfield Company Limited, Daqing 163712, China
Dengyu Yuan
Exploration and Development Research Institute, Petrochina Daqing Oilfield Company Limited, Daqing 163712, China
Qinghua Xu
Exploration and Development Research Institute, Petrochina Daqing Oilfield Company Limited, Daqing 163712, China
Relative permeability of polymer flooding plays a very important role in oil field development. This paper aimed to measure and calculate the relative permeability curves of polymer flooding more accurately. First, viscosity variation law of polymer in porous media was studied. Rock particles of different diameters and cementing agent were used to make artificial cores and hydrophobically associating polymer solutions were prepared for experiments. Polymer solutions were injected into the cores filled with crude oil and irreducible water. In the process of polymer flooding, produced fluid was collected at different water saturations and locations of the core. Polymer solutions were separated and their viscosities were measured. With the experimental data, the viscosity variation rule of polymer transporting in porous media was explored. The result indicates that the viscosity retention rate of polymer solutions transporting in porous media has power function relationship with the water saturation and the dimensionless distance from the core inlet. Finally, the relative permeability curves of polymer flooding were measured by unsteady state method and the viscosity variation rule was applied to the calculation of the relative permeability curves.
