TY -的AU -韦弗,Josh盟——Eggertsson Guðjon h . AU -·特利,James e . p . AU -华莱士,Paul a . AU - Lamur,安东尼AU -肯德里克,杰基e . AU - Tuffen休盟——Markusson Sigurður h . AU - Lavallee燕PY - 2020 DA - 2020/07/14 TI -热责任Krafla地热的玄武碎屑岩储层,冰岛:层状硅酸盐对渗透率的影响,岩石强度SP - 9057193六世- 2020 AB -地热领域容易温度波动从自然的热液活动,人为钻井实践和岩浆入侵。这些波动可能引起的响应岩石的矿物,物理(即。、孔隙度和渗透率)和力学性能。玄武碎屑岩是一个高度可变的火山碎屑岩主要形成过程中产生的玻璃碎屑防爆的quench-induced碎片,在水下和冰川下的喷发环境。他们在高纬度地区地热领域很普遍疲软,高渗透储层岩石和压实不透水岩石帽。玄武岩玻璃改变通过互动与外部水倒进clay-dominated矩阵,称为橙玄玻璃,而水泥散装岩石。丰富的,含水的层状硅酸盐矿物在橙玄玻璃可以脱水在升高的温度下,可能导致热的责任大部分岩石。使用从Krafla地表样品收集,冰岛,东北和一系列岩石,矿物,和力学分析,我们发现蒙脱石脱水一般发生在温度地热领域内经验丰富。脱水事件在130、185和600°C导致进步的质量损失和收缩。这种进化导致治疗温度之间的正相关关系,孔隙度增加,通透性增加。气体渗透率测量1 MPa围压热处理后提高了三倍达到600°C。 Furthermore, strength measurements show that brittle failure is dependent on porosity and therefore the degree of thermal treatment. Following thermal treatment at 600°C, the indirect tensile strength, uniaxial compressive strength, and triaxial compressive strength (at 5 MPa confining pressure) decrease by up to 68% (1.1 MPa), 63% (7.3 MPa), and 25% (7.9 MPa), respectively. These results are compared with hyaloclastite taken from several depths within the Krafla reservoir, through which the palagonite transitions from smectite- to chlorite-dominated. We discuss how temperature-induced changes to the geomechanical properties of hyaloclastite may impact fluid flow in hydrothermal reservoirs and consider the potential implications for hyaloclastite-hosted intrusions. Ultimately, we show that phyllosilicate-bearing rocks are susceptible to temperature fluctuations in geothermal fields. SN - 1468-8115 UR - https://doi.org/10.1155/2020/9057193 DO - 10.1155/2020/9057193 JF - Geofluids PB - Hindawi KW - ER -