The flow of fluids through sand control apertures, such as slots in slotted liners, is critical to the performance of heavy oil wells using Steam Assisted Gravity Drainage (SAGD) or other enhanced methods. Advanced optical image techniques were used to measure the in-situ flow velocity and pressure difference along slots of varying cross sectional profiles. The experimental slot was made as a two-dimensional channel in acrylic sheet to allow excellent visualization. The slots were full scale and varying in geometry: straight slots, keystone slots, and wire wrap screens were evaluated. Measurements were made for a Newtonian fluid (water) at different flow rates over the ranges expected in the field. Captured velocity profiles and non-dimensional pressure were compared with analytical theory. The corss-sectional profile of the slot affects flow characteristics which in turn affect the pressure difference developed across the sand control screen.

You can access this article if you purchase or spend a download.