Open AccessStudy on the stability and rheological properties of nitrogen foam under high-pressure condition
Author(s) -
Danqi Chen,
Shiti Cui,
Zhiliang Liu,
Zhengxiao Xu,
Binfei Li
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/632/2/022002
Subject(s) - rheology , materials science , viscosity , foaming agent , enhanced oil recovery , filtration (mathematics) , petroleum engineering , shear rate , particle (ecology) , moisture , composite material , chemical engineering , porosity , geology , statistics , oceanography , mathematics , engineering
After a period of exploitation of carbonate fractured-vuggy reservoir, the water content of oil well keeps increasing, and some wells appear violent water flooding in a short period of time, which leads to the rapid decrease of production. The injection of particle plugging agent is one of the main measures to improve the oil recovery. Foam fluid has the characteristics of low density, high viscosity and low moisture filtration, which can effectively carry plugging particles to the target plugging layers. A stable foam system with high temperature and salinity is optimized and the rheological properties of the foam are studied in this research. The results show that the foam can maintain high viscosity and carry particles effectively even at a higher shear rate.