Study of novel steam assisted gravity drainage multilateral wells with dynamic gridding

Ran Li


This study shows the great benefits of MLT wells and the capability of DLGR to simulate the physical dynamics along SAGD MLT trajectories and explores the best de-refinement criterion and upscaling rule to fit MLT well simulations. Under the DLGR strategy, the interaction of steam chambers between laterals and their neighboring base well pairs can be accurately and efficiently modeled, which leads to significant simulation time and capital savings. With the MLT wells simulation models, it has been discovered that the heating area between neighboring wells extends laterally and a peak oil rate increases. Consequently, cumulative oil production is enhanced by 4.07% and payoff comes one year earlier. It can be concluded that the MLT wells improve both steam injectivity and emulsion productivity due to the expansion of contact and drainage areas.