Open AccessInfluence Factors on Viscosity Loss of Injection System in A Test Area
Author(s) -
Dan Yuan
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 - 10.1088/1755-1315/680/1/012071
Subject(s) - viscosity , polymer , mixing (physics) , materials science , environmental science , petroleum engineering , composite material , geology , physics , quantum mechanics
As the first ASP flooding test in the transitional zone, it was put into pre polymer flooding in October 2018. However, the viscosity of single well cannot meet the design requirements at the initial stage of production. In view of the viscosity loss of polymer solution in the process of surface injection, by investigating the concentrated viscosity of each node of polymer injection process and single well injected outside the station, this paper analyzed the field test data and water quality report, found out the key links affecting the viscosity of polymer solution, and proposed various technical measures to reduce the viscosity loss. It is found that the viscosity loss is mainly formed after the mixing of polymer mother liquor and high-pressure sewage, and it is concluded that the main reason is the influence of injected water quality. Based on the analysis of salinity, bacterial content and iron ion in water quality, it is found in this paper that the viscosity of polymer injection increases by 40% when a fresh water pipeline is laid and the waste water is diluted on site.