Open AccessA New Type of Gelled Foam Plugging Agent with Resistance to Temperature, Salt and Dilution
Author(s) -
Yuan Li,
Caili Dai,
Yining Wu,
Ruoyu Wang
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/565/1/012051
Subject(s) - dilution , foaming agent , materials science , salinity , composite material , chemical engineering , petroleum engineering , porosity , geology , engineering , thermodynamics , oceanography , physics
The conventional foam plugging agent is susceptible to factors such as dilution of formation water, high temperature and high salinity, which usually shortens its effective period and undermine its application. Based on conventional foam plugging agents, an anti-dilution gelled foam plugging agent suitable for oil reservoirs with high temperature and high salinity is proposed in this paper. The research results show that the density of the gelled foam plugging agent (0.6∼0.9 g/cm 3 ) is controllable and easy to prepare, and it can be stabilized at 130° and 2.2 × 10 5 mg/L mineralization for at least 72 h. The indoor physical simulation experiments show that the plugging rate of gelled foam plugging agent is more than 98%, and the plugging effect is obvious, showing a good channeling plugging capability.