Key Tool for Production Optimization in Low Oil Price Environment- A Case Study on Integrated Asset Operation Model IAOM

Abstract

This paper describes an efficient approach to implement IAOM project and evaluate subsurface well performance and surface network facilities of a supergiant oil field flowing from multilayered carbonate reservoirs. The field is produced via several gathering stations and pumping stations. The current manifold pressures at the RDS stations are high, which will increase by the introduction of gas lift and by the additional production from new wells.

In IAOM implementation process, individual well strings and robust network model was built for the asset on the IAOM platform. This model was further utilized in meeting various production optimization challenges such as well surveillance, production and Injection optimization, forecasting and allocation and field development planning. This paper demonstrates how IAOM project was used to run different production optimization scenarios, describing the objective, methodology, analysis and results to address various challenges in production optimization. Following case studies were carried out for this purpose:

Well potential rate analysis and optimization: To determine well potential rate based on the well performance, reservoir guidelines and back pressure in the network system.

New producer well tie-in to existing network: To investigate optimal option for a new producer well flowline tie-in to existing well flowlines carrying fluid to remote degassing station and study well flowline performance after tie-in.

Wellhead shut-in pressure analysis and optimization: To estimate wellhead shut-in pressure at which well ceases to flow when reservoir pressure is increased to new pressure.

New pattern injectors tie-in to existing clusters: To estimate tie-in options for new water injector wells for new developments project to the existing clusters based on availability of water supply and closest distance.