| Popis: |
Hydro and Schlumberger have worked closely since 1998 to develop and install intelligent completions with increasing functionality in the Norwegian North Sea. This paper will provide and discuss several case histories in the region. These include: Installation of a natural gas lift application to enhance oil production at Troll field, which used a single control line to surface to operate a six-position gas lift valve to regulate flow from the gas cap. Installation of multizone monobore completions in the Oseberg field to offset production decline, in which several highly deviated and long-reach wells were successfully completed in two to three zones with established zonal isolation and flow control. Other case histories include the creation of innovative intelligent completions for multilateral wells with lateral flow control and natural gas lift with the gas cap perforated by tubing-conveyed perforating guns side-mounted on the production tubing. Among the observations made is that implementation of reliable pressure, temperature, and flow monitoring in the industry has not kept pace with the complexity of the flow control capability. The ongoing challenge is to create intelligent wells with reliable monitoring technologies to fully capitalize on the benefits and opportunities of zonal flow control. Innovative completion designs and state-of-the-art reservoir monitoring and control technologies are critical to intelligent well development. |
