Abu Dhabi Company for Onshore Oil Operations (ADCO) is a major oil producer in the Arabian Gulf with a wide portfolio of fields and reservoirs. The company is currently developing both new and existing assets to increase its production capacity. Field 'M' is one of the new assets that will contribute to this additional production.Although the field was discovered in 1975, it was categorized as a marginal development primarily due to its remote location, limited size and reservoir properties. As a result it remained undeveloped until 2011. A 3D seismic reprocessing was conducted in 2009, and significant reservoir data was gathered from an appraisal well in 2010 which reduced the subsurface uncertainties. The field became less remote through the development of a larger, neighboring field 50km away. As a result, in 2011 a decision was made to carry out a full field appraisal campaign, with the aim of putting the field on production by 2017.This paper describes the main challenges of the appraisal and development of the field, and details how they were tackled. A special emphasis is put on the value of multi-discipline integration between all the project stakeholders.