SPE Moscow section SPE Moscow section

Connectivity is a fundamental but oftentimes elusive characteristic that influences injection and production rates, path of the fluid and field economics. Predicting and measuring connectivity is an important activity for reservoir management. Reservoir simulation is a good tool for connectivity evaluation because of its flexibility. That flexibility, however, comes at a price of time and data needed to develop the geological model and obtain a history match. Several powerful alternatives to simulation exist and we present two here.

Abstract
Over the years, substantial operator cost improvements have been gained by managing drilling dysfunctions through a range of techniques. Yet substantial differences in determining which techniques to apply in certain applications remain, and success has thus been limited. Understanding the limitations of the available data for analysis, and broadening the application for implementing changes has yielded an additional gain in progress. Due to knowledge and sensor varieties, the performance is generally poorly understood and therefore may not always be duplicated.

The presentation demonstrates the benefits of using hollow glass microspheres as a low density additive in fluids formulated for use in workover of wells operating under depleted pressure conditions as found in JV “Vietsovpetro” White Tiger (Bach Ho) Oil Fields, Cuu Long Basin in Vietnam. The paper details the requirements on hollow glass microsphere selection process as a function of bottom hole hydrostatic pressure and fluid density.

The industry has faced some rapid advances in open-hole completions in recent years, mainly in horizontal wells. Among these innovations Inflow Control Devices (ICDs) have become established as frequently applied technology in field developments. ICDs are frequently deployed in long horizontal wells. They are particularly useful in heterogeneous reservoirs to mitigate the potential early water and/or gas breakthrough.