Numerical Simulation Study of Factors Affecting Production Well Gel Treatment Using Linear Models with Crossflow

摘要

Conformance control is an inevitable topic related to water-flooding. Polymer gel has been proved to enhance oil recovery by blocking the existing water-breakthrough channels. Water that is injected subsequently will be directed to the unswept portion of the reservoir, replacing part of the remaining oil and increasing the oil-recovery factor. Prior to pilot tests of polymer gel treatment, laboratory experiments and numerical simulations are used to design the tests. Understanding physical meanings of key parameters that affect polymer gel treatment and relating the parameters from lab data and the simulator benefit field operation design.;This thesis study tries to evaluate gel performance under different conditions using linear models in CMG-STARS. Eight operational and rock/polymer gel interaction properties are considered. Detailed interpretation of each variable and its influence on water and oil production are provided. Effects of blocking water and increasing oil are analyzed both in the 'effective period' and 'in the long run'.