Open AccessFlooding Control Mechanism of Waterflooding Sweep Control Technology
Author(s) -
Yinzhu Ye,
Xiaodong Kang,
Guan Baoshan,
Xianjie Li,
Zhihan Yang,
Hu Ke,
WU Xing-cai,
Peiwen Xiao,
Shichao Li,
Yang Liu
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1759/1/012001
Subject(s) - petroleum engineering , submarine pipeline , enhanced oil recovery , displacement (psychology) , permeability (electromagnetism) , water flooding , water injection (oil production) , materials science , polymer , geology , geotechnical engineering , chemistry , composite material , psychology , biochemistry , membrane , psychotherapist
In view of the problems of high permeability, high water cut and high recovery in offshore heterogeneous oil fields, the system including cross-linked polymer gel and flexible microgel gel was prepared indoors, which was used in the experiments of classified combination of waterflooding sweep control technology. The SMG microscopic oil displacement experiment shows that after the SMG system is injected into the model, the speed of the displacement fluid in the large pores decreases and the speed of the small pores increases, thereby effectively improving the oil recovery in the small pores. The long core experiment with multiple pressure points proves that the driving method of that cross-linked polymer gel and flexible microgel gel are alternately injected into core, which can block the dominant channel step by step and start. Then the low permeability area was displaced and the displacement fluid continuously diverted in the core, thus maximizing the purpose of oil recovery. The classification and grading water flooding control technology method provides effective technical support for the optimization of process parameters of offshore oilfield.