南海东部油田高产稳产开发实践

THE PRACTICE OF DEVELOPMENT WITH HIGH AND STABLE PRODUCTION FOR THE NANHAI EAST OILFIELDS

南海东部海域是中国海洋石油总公司对外合作勘探、开发的主要海域之一,自1990年以来,该海域已有12个油田相继投入开发,其中包括11个砂岩油田和一个礁灰岩油田.在开发初期,这些油田多数被评价为边际油田,通过中外双方近10年的共同努力,在开展不同阶段精细油田地质和油藏工程研究的基础上,结合该海域油田地质及开发特征,采用目前世界上先进的开发技术和开采工艺,取得了良好的开发效果和经济效益,并积累了一套具有海上油田特点的开发经验和作法,在油藏工程和油藏管理方面也取得了较大成功.文中通过展示南海东部油田地质及开发特征、开发现状和开发效果,剖析了油田开发技术,总结了油田开发经验,介绍了油田开发形势以及开发潜力.

Nanhai Pearl River Mouth Basin is one of the major joint exploration and development areas between CNOOC and foreign oil companies, where 12 oilfields have successively been put into production since 1990, with 11 in sandstones and one in reef limestone. These sandstone oilfields, though evaluated as marginal reservoirs during initial development, have produced good development results and economic efficiency after nearly 10_years efforts of both CNOOC and foreign sides. During these years, a set of development principles and experiences for offshore fields were accumulated, and some successful attempts were made in reservoir engineering and management, by refining studies of reservoir geology and engineering in various periods, considering offshore field geology and development characteristics, and using advanced techniques of development and production in the world. In this paper, the suitable techniques, useful experiences and future potential are concluded for development of the Nanhai East Oilfields, in consideration of development geology, status and results in these fields.