海外深水浊积气顶稠油边际油田开发优化研究——以刚果A油田为例

Abstract

西非深水地区发现的油气田储量规模一般比较大，但大都因属于特殊沉积类型，复杂流体特征，常规开发方式效果较差，经济评价结果往往十分边际。本文以位于西非刚果深水水域的浊积、带气顶稠油油田A为研究对象，对该深水浊积气顶稠油油田的浊积水道期次划分及储层连通性、地层原油粘度分布规律等地质油藏特征开展了精细研究，并对储量动用策略、开发方式等影响开发的主控因素进行了优化研究，针对性地提出了改善油田开发效果的开发策略和开发方法，研究结论也对如何提高此类边际油田开发的经济性具有一定的指导意义和参考价值。 Deepwater oil and gas field in West Africa are large, but conventional development methods have poor effects and the economic evaluation results are very marginal, due to the special deposit types and complex fluid characteristics. This paper takes A heavy oil field with gas cap which is turbidte deposition located in Congo deepwater in West Africa for study. Detailed studies on sub division of turbidite channel, reservoir connectivity, oil viscosity distribution and other geological reservoir characterization were carried out. Optimization study of main factors affecting the development, such as reserves producing strategy and development mode, was conducted. The development strategy and methods for improving development effect were presented. The paper also has some guidance and reference value for how to improve the economical values of such marginal oil field development.