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- W2345607777 abstract "Abstract Heavy oil reservoirs tend to be low energy, low GOR systems with high viscosities. These projects tend to have low recovery efficiency and low productivity compared to lighter oil. Offshore heavy oil projects typically produce a lower oil plateau with higher water production for longer periods of time and have higher capital and operating costs. As such these projects tend to sit at the bottom of any portfolio that contains light oil alternatives, with lower ROI, higher capital and operating costs. These attributes impact the entire development, from appraisal through concept selection, development and operation. As such a different approach is needed to evaluate an offshore heavy oil field. Lateral thinking is required to reduce the capital and operational costs associated with a heavy oilfield with advances in technology solutions effectively driving the management of these challenges. This paper discusses pertinent factors to consider and address during preliminary evaluation for marginal offshore field heavy oil production. These factors extend through many stages includingdevelopment concept selectionemulsion and viscosity challengesartificial lift selection and operational challengessand exclusion requirementsdrainage strategyscale formation challengespipeline transport considerations To illustrate the main points, a conceptual case wherein the field-development concept is considered to be limited to a subsea tie-back to a host facility is presented. The applicable technologies and solutions (including the effects of diluent and the potential need for subsea multiphase pump boosting) considered necessary to meet a target production rate for this case are discussed. A modelling methodology as well as sensitivity analysis adopted to realistically investigate and underscore possible significant pitfalls and benefits within an integrated production-system network is equally highlighted. Accounting for total production back-pressure effects may have significant implications for artificial lift design. The study also demonstrates the value that realistic pre-evaluation may add to the decision-making process for developing marginal offshore heavy oil fields." @default.
- W2345607777 created "2016-06-24" @default.
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- W2345607777 date "2014-12-10" @default.
- W2345607777 modified "2023-09-23" @default.
- W2345607777 title "Factors to Consider During the Pre-Screening Stage for Marginal Offshore Heavy Oil Field Production" @default.
- W2345607777 doi "https://doi.org/10.2523/iptc-17894-ms" @default.
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