摘要
深水油田勘探开发存在经验不足,深水环境及地下因素复杂多变、单井投资费用高企,以及项目成本回收压力大等挑战,简单复制陆上和浅海的勘探开发一体化模式已无法满足深水油田勘探开发的需要。为此引入地质工程一体化理念,综合考虑地下不确定性、时间要素和成本要素,提出一套适合深水油田的油藏评价及决策体系,并在此基础上开展评价模式、决策方法以及钻完井配套技术研究。在巴西盐下深水油田的评价实践表明,以分区评价为核心的"一体双轴"的评价模式和以信息价值为代表的深水油田评价井决策方法,将有利地推动深水油田的勘探开发一体化进程,缩短评价周期,进而实现油藏评价的效益最大化和评价决策的科学化。盐下钻完井配套技术的应用,大幅提高了钻井效率,在为开发井积累经验的同时,降低了钻井成本。地质工程一体化理念在巴西利布拉油田的应用,证明了地质工程一体化作业模式在深水油田以及油藏评价阶段的适应性,从而扩大了地质工程一体化的应用领域。
The exploration and development of deepwater oilfield faces challenges such as insufficient experience, complex deep-water environment and underground factor, higher single-well investment cost, and difficult cost recovery, so that simply using the exploration- development integration mode for onshore and shallow water fields is difficult to meet the requirement of deep-water oilfield. The concept of geology-engineering integration is proposed, incorporating subsurface uncertainties, time and cost elements, which forms a reservoir evaluation and decision-making system, and based on which the evaluation mode, decision-making method and supporting drilling and completion technology have been researched and developed for deepwater oilfields. Evaluation practice in the deepwater pre-salt reservoirs in Brazil shows that the divisional evaluation mode called ＂one body and two axes＂ and information-value-oriented decision-making method would be favorable to promote the process of integrated exploration and development, shorten the evaluation period, maximize the evaluation benefit and make scientific decisions for deepwater oilfield. The application of pre-salt drilling and completion technology has greatly improved the drilling efficiency and reduced the drilling cost while accumulating experience for development wells. The successful application of the geology-engineering integration has proved it effective in deepwater oilfield and reservoir evaluation.
作者
姜彬
尚凡杰
王亚青
杨莉
武静
Jiang Bin;Shang Fanjie;Wang Yaqing;Yang Li;Wu Jing(CNOOC Research Institut)
出处
《中国石油勘探》
CAS
北大核心
2018年第2期83-89,共7页
China Petroleum Exploration
基金
国家科技重大专项"大型油气田及煤层气开发"(2011ZX05030-005)
关键词
深水油田
油藏评价
地质工程一体化
信息价值
勘探开发一体化
deepwater oilfield, reservoir evaluation, geology-engineering integration, value of information, exploration-development integration
