Use of Reservoir Compartments Concept in Management of Western flank Area of a Mature Field in Kuwait

Ghiyath A.H. Al-Sabeq*, Maximilliano P. Rivas, and Saleh F. Al-Azmi
KOC
*[email protected]

The objective of this study was to apply the concept of compartmentalization in the Greater Burgan field. It focused on a western flank area of a specific reservoir and applied the best reservoir management techniques to find or delineate pockets of bypassed oil. The developed sands in the field are continuous and act as such for a long time during production. However, the identified compartmentalization effect was only evident at a later stage following the long production interval associated with a single oil-water contact behavior. This was a result of variations in the regional water contacts, which had structural and stratigraphic implications in the study area. The task involved the determination of the volume and location of remaining oil, and subsequently the technical and economic assessment methods to recover it. The remaining mobile oil is located in a number of predictable locations in the reservoirs depending on their structural style and facies. The main task is to re-develop the bypassed oil rims and attic oil in faulted sandstone reservoirs. The compartments were assumed to have the same oil-water contact. Attic oil along faults is perhaps the simplest configuration to redevelop and contains sizeable oil volumes. Calculations of the remaining oil-in-place used the most recent maps with updated Pulsed Neutron Capture log data interpretation to generate the most recent oil-water contact data. The study included benefits such as: (1) a better way of estimating and identifying remaining oil in a particular compartment; and (2) easier diagnosis of reservoir actions needed by reservoir management.

AAPG Search and Discovery Article #90077©2008 GEO 2008 Middle East Conference and Exhibition, Manama, Bahrain