An Innovative and Interactive Tool to Optimize Well Placement and Qualify Reservoir Risks

Abstract

The importance of an optimum well placement cannot be over-emphasized, because well location is one of the key factors that dominate the success of a field development plan. Well placement is a challenging and complicated process due to the complexity of reservoir, especially for a mature reservoir. The process of determining the optimized well location requires multi-disciplinary input and collaboration. In order to optimize the analysis process, this paper presents an innovative and interactive tool, which utilizes a 2-D map format to visualize the multi-disciplinary data, including reservoir management, reservoir simulation, geology, geophysics, and petrophysics. Following the analysis workflow, well target and risks can be optimized and identified by engineers through analyzing various maps, including well status map, well trajectory map, pressure map, production map, net oil thickness map, simulation confidence map, productivity index map, rock facies map, etc. The data that cannot display into map format can be accessed through links integrated in the tool.This ADMA-OPCO offshore field is a giant field, which has been producing for almost 50 years. As a current Mid-term development plan, more than 40 new wells and 90 existing wells will be drilled or worked over from the multi-layer reservoirs. The well placement is a critical activity to achieve a sound field development plan. By utilizing the novel tool and workflow, all the planned wells have been reviewed and optimized based on current reservoir situation. Prioritization has been evaluated based on the risks and reservoir requirements. Opportunities of quick wins have been identified during the process as well. Successful completions of wells after optimization have confirmed the value of the new tool. Besides, since reservoir condition is dynamic, the tool would be utilized frequently to capture the new updated information.