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首页> 外文会议>SPE/CSUR Unconventional Resources Conference Canada >Estimating Effective Fracture Pore-Volume from Early Single-Phase Flowback Data and Relating It to Fracture Design Parameters
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Estimating Effective Fracture Pore-Volume from Early Single-Phase Flowback Data and Relating It to Fracture Design Parameters

机译：从早期单相回收数据估算有效的骨折孔体积并将其与骨折设计参数相关联

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摘要

Flowback data analysis has been recently considered by the industry to quantify hydraulic fracture parameters such as, effective fracture pore-volume. Tools based on simulation and rate transient analysis have been applied for flowback analysis. However, too many unknown parameters, together with complex production mechanisms lead to uncertain and non-unique results. This paper illustrates how flowback data can be interpreted to estimate effective fracture pore-volume and its relationship to fracture design parameters. This study starts by addressing some limitations of the previous flowback models. In particular, the effects of water expansion and fracture closure are included in the proposed model. The resulting linear relationship is applied to flowback data from eight tight oil and gas wells in Anadarko Basin to estimate effective fracture pore-volume. The estimated effective fracture pore-volumes are compared with fracture design parameters such as total injected volume of water, soaking time, gross perforated interval, and proppant concentration. The results indicate that fracture closure is the main mechanism for single-phase water flowback. Therefore, effective fracture pore-volume largely depends on fracture compressibility. The results also show that soaking time, gross perforated index, and proppant concentration are among the key design parameters for an optimum fracturing treatment.
机译：最近由行业考虑了流量数据分析，以量化液压断裂参数，如有效的骨折孔体积。基于仿真和速率瞬态分析的工具已应用于流量分析。然而，太多未知的参数，以及复杂的生产机制导致不确定和非独特的结果。本文说明了如何解释流量数据以估计有效的骨折孔体积及其与裂缝设计参数的关系。本研究通过解决先前的流量模型的一些限制来开始。特别地，水膨胀和断裂闭合的影响包括在所提出的模型中。由此产生的线性关系应用于Anadarko盆地中的八个拧紧油气井的流量数据，以估计有效的骨折孔体积。将估计有效的骨折孔隙体积与骨折设计参数进行比较，例如水，浸泡时间，粗糙间隔和支撑剂浓度。结果表明，断裂闭合是单相水流的主要机制。因此，有效的骨折孔体积主要取决于断裂可压缩性。结果还表明，浸泡时间，大大穿孔指数和支撑剂浓度是最佳压裂处理的关键设计参数之一。

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