SBIR Phase I: Development and testing of a dry fracture technique to reduce water use and increase life cycle yield in oil and gas extraction
SBIR 第一阶段:开发和测试干压裂技术,以减少石油和天然气开采的用水量并提高生命周期产量
基本信息
- 批准号:1721502
- 负责人:
- 金额:$ 22.5万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2017
- 资助国家:美国
- 起止时间:2017-07-01 至 2019-01-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The broader impact/commercial potential of this Small Business Innovation Research (SBIR) project will be to significantly increase recovery efficiency and decrease ecological footprint. The ecological footprint is decreased by reducing the amount of water required to produce oil and gas from many low permeability U.S. unconventional plays. Further, it will provide access to the vast reserves of potential oil and gas (estimated at greater than 2 trillion barrels) stored as immature organic material helping to enhance energy independence for the US. The new methods will enhance production of oil and gas from a controllable volume surrounding development wells. The proposed methods will replace the rapid declines in well productivity of fracked wells, and the accompanying typically less than 10% recovery of hydrocarbons in place, by a strategy which will construct multi-year oil and gas "factories" which will have continuous, predictable, twenty year production lifetimes. Increased recovery factors through increased efficiency will enhance the value of existing plays and provide a step-change in sustainable energy production while lowering environmental impact through reducing surface disruption and minimizing water use and disposal.This SBIR Phase I project proposes to develop the models necessary to simulatethe Radio Frequency (RF) waterless stimulation process, and to provide laboratory and numerical data to support that model. A self-consistent model of the RF system and its downhole environment, is required to define the conditions for which RF stimulation makes economic sense, and to optimize system design for a given target play. Project objectives are to 1) demonstrate design of a RF system which mitigates the previous problems found with RF heating, 2) test in the laboratory the effects of RF heating on reservoir rock subject to realistic in situ conditions to understand the resultant crack field and accompanying permeability enhancement, including the impact of RF heating on immature kerogen, 3) model the resulting stress and fracture fields with sufficient fidelity to make predictions for oil and gas recovery, and 4) use this information to form a self consistent model of the process so that various shale plays can be evaluated. A commercial multiphysics numerical modeling approach will be used to simulate the physical processes that occur including feedback to account for temperature increases and the impacts of in situ stress and structural complexity.
这个小企业创新研究(SBIR)项目的更广泛的影响/商业潜力将大大提高回收效率和减少生态足迹。通过减少从美国许多低渗透性非常规区块生产石油和天然气所需的水量,减少了生态足迹。此外,它还将提供大量潜在的石油和天然气储备(估计超过2万亿桶),这些石油和天然气作为未成熟的有机材料储存,有助于提高美国的能源独立性。这些新方法将提高开发威尔斯井周围可控体积的油气产量。 所提出的方法将取代压裂威尔斯的井生产率的快速下降,以及伴随的通常小于10%的碳氢化合物就地回收率,这是通过一种策略来实现的,该策略将构建多年石油和天然气“工厂”,其将具有连续的、可预测的、二十年的生产寿命。通过提高效率来提高采收率将提高现有区块的价值,并为可持续能源生产提供一个台阶式的变化,同时通过减少地表破坏和最大限度地减少水的使用和处理来降低环境影响。SBIR第一阶段项目建议开发模拟射频(RF)无水刺激过程所需的模型,并提供实验室和数值数据来支持该模型。需要RF系统及其井下环境的自洽模型来定义RF刺激具有经济意义的条件,并针对给定目标区带优化系统设计。项目目标是:1)证明RF系统的设计,该系统可缓解先前在RF加热中发现的问题,2)在实验室中测试RF加热对受实际原位条件影响的储集岩的影响,以了解所产生的裂缝场和伴随的渗透率增强,包括RF加热对未成熟油母岩的影响,3)以足够的保真度对所产生的应力和裂缝场进行建模,以预测油气开采,以及4)使用该信息来形成该过程的自洽模型,从而可以评估各种页岩区带。将使用一种商业多物理场数值模拟方法来模拟发生的物理过程,包括反馈,以说明温度升高以及原地应力和结构复杂性的影响。
项目成果
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