Mechanism and Effect of Natural Zeolite in EOR

摘要

Zeolite grains are pretty effective in blocking highly permeable strata. The author observed the chemical component and exterior construct of zeolite, measured adsorptive ability of the zeolite in the polymer carrying solution, evaluated the blocking and flooding effect, and analyzed the mechanism. The results show that the size of the grain and density of the solution, injection time, slug size, and how the zeolite and polymer slug combined affect blocking and flooding effects. Experiments at Lama-dian oilfield showed that a zeolite-polymer solution is extremely effective in blocking the extra-high-permeability strata.