The First Worldwide Deployment of a Pulsed Neutron Tool with Coiled Tubing Fiber Optic Real-Time Telemetry

摘要

Production logging in horizontal wells presents particular challenges, especially when the wells are completed uncemented using prepacked screens or slotted liners. These challenges are attributed to well geometry, i.e., the existence of severe doglegs and undulations where trapped fluids that could directly affect and influence data readings from the tools, such as stagnant water, may lie either inside or outside the liner in low areas at the bottom of the well or stagnant gas accumulating on the high side of drain hole undulations.