Micro-characterization of montney unconventional hydrocarbon source rock

蒙特尼非常规烃源岩微观表征

• 批准号: 522796-2017
• 负责人: Grasselli, Giovanni
• 金额: $ 1.82万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=639866
• 关键词: Micro; characterization; montney; unconventional; hydrocarbon

The Montney formation is the largest and most productive play in Alberta and British Columbia and one of thelargest unconventional gas resources in the world. Technological advances in horizontal drilling and hydraulicfracturing (aka fracking) have made it possible to release hydrocarbon from the Montney play as well as manyother low-permeability (tight) reservoirs that were formerly inaccessible or uneconomical to exploit. Despitethese technological advancements, many wells still underperform because of the current limitation in fullyunderstanding how reservoir rocks fracture under those complex processes, which are ultimately responsiblefor creating the network of interconnected fractures used to channel and extract the targeted hydrocarbonresource. The objective of this work is to develop a procedure to create a rock mechanics model that could beused to predict the performance of Montney unconventional hydrocarbon source-rock during hydraulicfracturing operations. The expected rock mechanics model will inform a micro-mechanical modeling based onthe finite discrete element model (FDEM) technology. FDEM combines the advantages of large strain finiteelements with those of the discrete elements, allowing for explicitly modelling the propagation of cracks intoan originally intact material, as well as the interaction between the different phases and materials. By modellingthe physical interactions at the micro-scale, FDEM is able to reproduce the response of the tested material as anemergent property of the model. However, the reliability of any FDEM modeling exercise is highly dependenton the accuracy of the used input material properties. A micro-characterization of the hydrocarbon-richsiltstone, together with advanced imaging performed inside a micro x-ray computed tomography machine(microCT), will help to inform and constrain the development of any future FDEM model.

蒙特尼地层是艾伯塔省和不列颠哥伦比亚省最大、产量最高的油气田，也是世界上最大的非常规天然气资源之一。水平钻井和水力压裂（又名水力压裂）技术的进步使得从蒙特尼油田以及许多其他以前无法进入或开采不经济的低渗透（致密）油藏中释放碳氢化合物成为可能。尽管取得了这些技术进步，但许多井仍然表现不佳，因为目前在充分了解储层岩石在这些复杂过程下如何破裂方面存在局限性，而这些复杂过程最终负责创建用于引导和提取目标碳氢化合物资源的互连裂缝网络。这项工作的目的是开发一种程序来创建岩石力学模型，该模型可用于预测蒙特尼非常规烃源岩在水力压裂作业期间的性能。预期的岩石力学模型将为基于有限离散元模型（FDEM）技术的微观力学建模提供信息。 FDEM 结合了大应变有限元与离散单元的优点，可以对裂纹在原始完整材料中的传播以及不同相和材料之间的相互作用进行明确建模。通过对微观尺度的物理相互作用进行建模，FDEM 能够将测试材料的响应再现为模型的新兴属性。然而，任何 FDEM 建模练习的可靠性都高度依赖于所使用的输入材料属性的准确性。富含碳氢化合物的粉砂岩的微观表征，以及在微型 X 射线计算机断层扫描机 (microCT) 内进行的先进成像，将有助于为任何未来 FDEM 模型的开发提供信息和约束。