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.

蒙特尼组是艾伯塔省和不列颠哥伦比亚省最大，最有生产力的游戏，也是世界上最大的非常规天然气资源之一。水平钻孔和液压屈光度（又称压裂）的技术进步使得从蒙特尼游戏中释放碳氢化合物以及许多其他以前是不可访问或不可剥削的不可渗透的低渗透性（紧密）储层。鄙视技术的技术进步，许多井仍然表现不佳，因为当前限制了在这些复杂过程中如何弥补储层岩石裂缝的裂缝，这些过程最终负责建立用于引导和提取目标的碳氢化合物网络的网络。这项工作的目的是制定一种创建岩石力学模型的程序，该模型可以使用液压屈光操作期间蒙特尼非常规烃源摇滚的性能。预期的岩石力学模型将根据有限离散元素模型（FDEM）技术为微型机械建模提供信息。 FDEM将大型应变有限元与离散元素的优势结合在一起，从而明确建模裂纹传播成最初完整的材料，以及不同阶段和材料之间的相互作用。通过模拟微型尺度上的物理相互作用，FDEM能够将测试材料的响应重现为模型的静脉特性。但是，任何FDEM建模练习的可靠性高度依赖于使用的输入材料特性的准确性。在微型X射线计算机断层扫描机（Microct）内进行的高级成像，将对碳氢化合物富含碳酸盐的含量进行微观特征，将有助于告知和限制任何未来FDEM模型的开发。