| Popis: |
Arrow Energy is a 50/50 joint venture between Shell and China National Petroleum Corporation. It holds vast coal bed methane gas resources in the Surat and Northern Bowen basins of Queensland, Australia. Recently the well design in the north Bowen asset has evolved to a heel intersect multilateral concept to further reduce the surface footprint, extend reservoir access and improve cost-effectiveness. The new well design components consist of a vertical producing well intersected by a horizontal multilateral well. It was tested on several targeted reservoirs and areas. There were a number of key learnings developed during the horizontal well construction, such as underbalanced drilling, intersect well technology, and directional drilling learning curve. Post completion, special considerations have been given on initial dewatering rates and solids-related production trends as a holistic well production strategy to assess the well concept selection effectiveness. This paper describes the key challenges and learnings from the well construction and production phases of the heel intersect multilateral well trials. This program has significantly helped Arrow Energy to mature the well design concept for future campaigns. |
