下刚果盆地某大型深水油田群高效开发实践与认识

Practice and Knowledge of High-efficiency Development in A Certain Large Deep-water Oilfields Group in Lower Congo Basin

李广超

LI Guangchao

中国石油化工股份有限公司石油勘探开发研究院，北京　102206

Petroleum Exploration and Production Research Institute of SINOPEC, Beijing 102206, China

近年来，深水成为全球油气勘探开发热点领域。与陆上或浅海油田开发相比，深水油田开发具有投资规模大、建产周期长、开发成本高、地质风险高、技术复杂等特点，如何实现高效开发是深水油田普遍面对的重大问题与挑战。以西非下刚果盆地某大型深水油田群为例，剖析并总结了该油田群高速高效开发的主要做法及开发效果。研究表明，该油田群采取联合开发、少井高产的开发策略，采用稀疏井网条件下多点地质统计地质建模、油藏-井筒-海底系统一体化优化、4D地震技术等，实现了油田群高速高效开发，研究成果对我国深水油田开发具有一定借鉴和启示意义。

In recent years, deepwater is increasingly becoming the hot region for global oil and gas exploration and development. Compared with onshore or shallow-water oilfields, deep-water oilfields development usually has characteristics such as expensive investigation, long construction period, high geological risk, and demanding complex techniques, etc. It is a great challenge to perform high-efficiency development for deep-water oilfields. This paper took a certain large deep-water oilfields group in lower Congo Basin as an example, analysed and summarized the main practices and effects of high-efficiency methods used in development. The results show that, using methods such as co-development and high-productivity with less wells, combining with techniques including multi-points geo-statistics modelling under sparse well pattern, integrated optimization of reservoir-wellbore-subsea system, and 4D seismic, high-efficiency development of deep-water oilfields is achievable. The research results have certain reference and enlightenment significance for the development of deep-water oilfields in China.

https://doi.org/10.3969/j.issn.1008-2336.2023.01.020