深水浊积砂岩油藏高效开发策略及关键技术

doi:10.11885/j.issn.1674-5086.2024.08.31.04

摘要/Abstract

摘要： 针对深水浊积砂岩油田开发投资大、方案编制资料少、一次井网成功率要求高、高速采油力争最大采收率等问题，开展了浊积砂岩储层特征分析、地球物理预测、建模数模一体化、高效开发策略等研究。研究表明，深水浊积砂岩水道可划分为大型浊积水道、分支水道和朵叶体等微相；形成了地震平点识别浊积水道油藏原始油气界面、振幅属性刻画浊积水道展布、地震剖面划分多期水道切割关系、波阻抗反演预测砂岩厚度、四维地震监测流体前缘变化等地球物理关键技术；建立了基于油藏-井筒-管网-FPSO一体化的开发指标和生产参数优化技术；探索出浊积水道砂岩油藏不规则井网、单井控制可采储量经济界限、大井距边缘或缘外早期注水等效益开发策略。上述关键技术和开发策略应用于安哥拉18区块P油田开发实践，实现了少井、高产、高投资和高回报的目标，实现了10余年未动用深水边际储量高效开发，为类似油藏开发提供了借鉴。

关键词: 浊积砂岩, 深水水道, 岩石物理, 边际储量, 开发策略, 安哥拉

Abstract: In response to the challenges of high investment in deepwater turbidite sandstone oilfield development, limited available data for project planning, high requirements for the success rate of the one-time well network, and striving for maximum oil recovery through high-speed oil production, researches have been conducted on reservoir characteristics of turbidite sandstone, geophysical prediction, geomodeling and numerical simulation integration, and efficient development strategies. It has been revealed that deep-water turbidite sandstone channels can be subdivided into composite channels, single channels, branch channels, and submarine fans as microfacies. Key geophysical technologies have been developed including seismic point identification of turbidite channel reservoirs' original oil-gas interface; amplitude attribute characterization of the extension distribution and oscillation range of turbidite channels, division of multi-stage channel cutting relationships on seismic profiles, prediction of sandstone thickness through wave impedance inversion, characterization of changes in water drive front using 4D seismic monitoring techniques. Technologies of development indicators and production parameters optimization for reservoir-well-pipeline-network-FPSO integration have been established. Development strategies for turbidite channel sandstone reservoirs such as irregular well networks deployment, economic limit of single well controlled recoverable reserves, early water injection at the edge with a large well space have been summarized. The above key technologies and models have been applied to the development of P Oilfield in Block 18 of Angola, achieving the goals of fewer wells and high production, high investment and high return, making possible the efficient development of the deep-water marginal reserves that have not been utilized for more than 10 years, and providing reference for the development of similar reservoirs.

Key words: turbidite sandstone, deep water channels, petrophysics, marginal reserves, development strategy, Angola

中图分类号:

TE38

王光付, 张文彪, 李发有, 陆文明, 李蒙. 深水浊积砂岩油藏高效开发策略及关键技术[J]. 西南石油大学学报(自然科学版), 2025, 47(1): 1-15.

WANG Guangfu, ZHANG Wenbiao, LI Fayou, LU Wenming, LI Meng. High Efficient Development Strategies and Key Technologies for Turbidite Sandstone Reservoirs in Deep-water[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2025, 47(1): 1-15.

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