Improved Oil and Gas Recovery from Difficult to Exploit Reservoirs

提高难以开采油藏的油气采收率

• 批准号: 203142-2012
• 负责人: Maini, Brij
• 金额: $ 2.48万
• 依托单位: University of Calgary
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=569876
• 关键词: Improved; Oil; Gas; Recovery; Difficult

This research program is aimed at improving the understanding of reservoir mechanics involved in oil and gas recovery processes and extending the reach of such recovery processes to deposits of marginal quality that are not exploitable with current technology. These include thin heavy oil formations, heavy oil deposits in fractured carbonate formations, bitumen deposits containing bottom or top water zones, heavy oil deposits that have been depleted by cold production but still contain high oil saturation and deposits of methane hydrates. This research involves experimental and theoretical examination of basic mechanisms involved in improved oil recovery processes. The research projects proposed for the continuation of this program include the following. i. Two-Phase Flow in Fractures: We have studied the flow patterns and relative permeability characteristics in smooth-walled and rough-walled Hele-Shaw cells during simultaneous flow of oil and water. The proposed continuation of this work will evaluate the effects of fracture thickness, fracture and flow orientation, wettability and wall roughness on flow characteristics. ii. Gas Hydrates in Porous Media: This project is aimed at examining the mechanics of hydrate formation and decomposition in porous media. Experiments are being conducted in sand-packs to measure the effects of hydrate formation on permeability and thermal conductivity of hydrate saturated sand beds. This data is needed for modeling the formation and decomposition of hydrates in porous media. iii. Diffusivity of Light Hydrocarbons in Heavy Oil: This project involves measurements of diffusivity of light hydrocarbons in heavy oils at elevated temperatures and pressures. The focus has been to improve the experimental techniques for such measurements and to use the improved techniques for investigating the effect of concentration on diffusivity. The project aims to provide the industry an extensive database of measured diffusivities in Canadian heavy oils.

该研究计划旨在提高对油气开采过程中所涉及的储层力学的理解，并将这种开采过程的范围扩大到目前技术无法开采的边际质量矿床。 这些包括薄的重油地层、裂缝碳酸盐地层中的重油矿床、含有底部或顶部水层的沥青矿床、已被冷生产耗尽但仍含有高油饱和度的重油矿床和甲烷水合物矿床。 这项研究涉及实验和理论研究的基本机制，在提高石油采收率的过程。 为继续实施这一方案而提出的研究项目包括以下内容。 I. 裂缝中的两相流：本文研究了油水两相同时流动时光滑壁和粗糙壁Hele-Shaw盒中的流型和相对渗透率特性。建议继续这项工作将评估裂缝厚度，裂缝和流动方向，润湿性和壁面粗糙度对流动特性的影响。 二. 多孔介质中的气体水合物：该项目旨在研究多孔介质中水合物形成和分解的机理。在填砂实验中，测量了水合物形成对水合物饱和砂层渗透率和热导率的影响。这些数据是模拟多孔介质中水合物的形成和分解所必需的。 三. 轻质烃在重油中的扩散率：该项目涉及在高温高压下测量轻质烃在重油中的扩散率。重点是改进这种测量的实验技术，并使用改进的技术来研究浓度对扩散率的影响。该项目旨在为工业界提供一个广泛的加拿大重油扩散率测量数据库。