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首页> 外文会议>US Rock Mechanics/Geomechanics Symposium >Step-Rate Injection Method for Fracture In-Situ Properties (SIMFIP):Monitoring fractures stimulation efficiency
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Step-Rate Injection Method for Fracture In-Situ Properties (SIMFIP):Monitoring fractures stimulation efficiency

机译：分裂性裂缝注射方法（SIMFIP）：监测骨折刺激效率

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摘要

We show an application of the Step-Rate Injection Method for Fracture In-Situ Properties (SIMFIP) which is dedicated to quantifying both discontinuities hydraulic and mechanical properties in situ variations using coupled pressure/deformation measurements in boreholes. The method has been applied to estimate the efficiency of fractured zone stimulation. The apparatus and operating procedure are first described together with data recording and processing. We show that SIMFIP tests generate and allow monitoring pluri-micrometer dilatant slip on pre-existing fractures, representative of mechanisms invoked in reservoir scale stimulations. In situ fractures permeability, elastic stiffness, apparent friction, dilation, and moment can be estimated from the slip, opening, water pressure and flow rate data that are synchronously measured during the test. In the presented case study, key results are that fractures well oriented for slip display a factor-of-40 permeability increase for a relatively small 80 x 10-6 m slip associated to a high dilation rate. Never the less, it also appears that the high dilation induced by the stimulation may cause a high mechanical weakening of the fractures, increasing the potential for induced seismicity.
机译：我们展示了用于骨折原位性质（SIMFIP）的梯度注射方法的应用，其专用于使用耦合的压力/变形测量在原位变化中量化不连续性液压和机械性能。该方法已被应用于估计裂缝区刺激的效率。首先将装置和操作过程与数据记录和处理一起描述。我们表明SIMFIP测试产生并允许监测Pluri-Micromet抗扩张剂对预先存在的裂缝，代表储层规模刺激中调用的机制。原位裂缝渗透性，弹性刚度，表观摩擦，扩张和时刻可以从在测试期间同步测量的滑动，开口，水压和流速数据估算。在呈现的案例研究中，关键结果是裂缝良好导向的裂缝显示出与高扩张速率相关的相对较小的80×10-6M滑移的40个渗透率增加。从来没有少，似乎刺激诱导的高扩张可能导致骨折的高机械削弱，增加诱导地震性的可能性。

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