Reservoir Characterisation by Integrated Seismic and Electromagnetic Remote Sensing

通过集成地震和电磁遥感进行储层表征

• 批准号: DT/E005616/1
• 负责人: Martin Sinha
• 金额: $ 44.65万
• 依托单位: University of Southampton
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2006
• 资助国家: 英国
• 起止时间: 2006 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=DT%2FE005616%2F1
• 关键词: Reservoir; Characterisation; Integrated; Seismic; Electromagnetic

The marine controlled source electromagnetic (CSEM) survey method is rapidly gaining acceptance as a geophysical exploration tool for the offshore oil and gas production industry. By determining the electrical resistivity within seafloor geological structures, the CSEM technique can dramatically reduce the risk of drilling dry exploration wells. In this project we propose to extend the application of CSEM to reservoir appraisal and monitoring, through the development of survey geometries and data analysis techniques that optimise the sensitivity of the method to 3D structures, and any changes in them. We shall also seek to integrate the interpretation of CSEM and seismic data, to more fully characterise reservoir properties. The overall objective is to develop methodologies that will allow CSEM to be applied to the mapping of small or incremental hydrocarbon reserves; to accurately monitoring existing reserves during production to optimise recovery; and to monitoring the storage of CO2 in geological sequestration projects. Specific problems of immediate importance to the UK oil and gas industry that the project will address are: Detecting small resistivity anomalies. This will allow small incremental or additional hydrocarbon reserves in 'brownfield' sites to be indentified and quantified. Remote resistivity monitoring of reservoirs. By accurately monitoring the changes in resistivity structure of a reservoir across its full lateral extent during production, water breakthrough can be identified and mitigated to optimise recovery. Integrating results from CSEM surveys with existing seismic information to more fully characterise reservoir content and its changes over time. Monitoring changes in hydrocarbon saturation and distribution within the reservoir during production will again help to optimise production. Evaluation, monitoring and verification of geological CO2 sequestration projects. There are few (if any) remote sensing methods capable of monitoring CO2 content and distribution during injection. This project will investigate solutions to this problem, using the CSEM method to track and monitor CO2 following injection.

海洋可控源电磁（CSEM）勘探方法作为海洋油气生产行业的一种地球物理勘探工具，正迅速得到人们的认可。通过确定海底地质结构内部的电阻率，CSEM技术可以显著降低钻探干探井的风险。在这个项目中，我们建议将CSEM的应用扩展到储层评价和监测，通过开发测量几何和数据分析技术，优化方法对3D结构的敏感性，以及它们的任何变化。我们还将寻求整合CSEM和地震数据的解释，以更充分地表征储层的性质。总体目标是开发方法，使CSEM能够应用于小型或增量碳氢化合物储量的测绘；在生产过程中准确监测现有储量，以优化采收率；以及在地质封存项目中监测二氧化碳的储存。该项目将解决的对英国油气行业具有直接重要性的具体问题包括：探测小电阻率异常。这将使“棕地”地区的少量增量或额外的油气储量得以确定和量化。储层电阻率远程监测。在生产过程中，通过准确监测储层整个横向范围内电阻率结构的变化，可以识别并缓解水侵，从而优化采收率。将CSEM调查结果与现有地震信息相结合，更全面地描述储层含量及其随时间的变化。在生产过程中监测油气饱和度和储层分布的变化将有助于优化生产。地质二氧化碳封存项目的评估、监测和验证。能够监测注入过程中二氧化碳含量和分布的遥感方法很少（如果有的话）。该项目将研究解决这一问题的方法，使用CSEM方法跟踪和监测注入后的二氧化碳。