水平井分段压裂产能电模拟实验方法

发布时间：2019-06-15 05:00

【摘要】：为了对水平井分段压裂产能影响因素进行模拟,研究了一种水平井分段压裂产能电模拟实验方法。首先,根据水平井分段压裂后的实际地层情况,模仿研制了一套三维电场模拟装置;然后,根据要模拟的砂体展布特征、油气藏的流动边界类型、水平井在砂体中的井眼轨迹、地层渗透率及地层厚度等,设置电模拟的电解液和电解池尺寸等,根据水平井长度、裂缝高度、裂缝长度、压裂段数、裂缝条数和缝间距等,设置模拟井筒及裂缝;最后,通过采集电流信号,以确定产能的大小。利用该实验方法分别开展了针对某河流相沉积砂体的水平井压裂裂缝形态及位置优化模拟、裂缝条数及间距优化模拟和不同地层厚度对比模拟实验,优化出的结论及参数为现场实施提供了技术支持。这种电模拟实验方法能够精确模拟水平井压裂完井的各项参数对产能的影响,对水平井压裂完井设计具有一定指导意义。
[Abstract]:In order to simulate the influencing factors of segmented fracturing energy in horizontal wells, an experimental method for electrical simulation of segmented fracturing productivity in horizontal wells is studied. First of all, according to the actual formation situation of horizontal well after subsection fracturing, a set of three-dimensional electric field simulation device is developed. Then, according to the distribution characteristics of sand body to be simulated, the flow boundary type of oil and gas reservoir, the wellbore trajectory, formation permeability and formation thickness of horizontal well in sand body, the size of electrolyte and electrolytic cell, etc., the simulated wellbore and fracture are set according to the length of horizontal well, fracture height, fracture length, the number of fracture segments, the number of fracture bars and fracture spacing. Finally, the current signal is collected to determine the capacity. By using this experimental method, the fracture morphology and position optimization simulation, fracture number and spacing optimization simulation and different formation thickness comparison simulation experiments for horizontal well fracturing of a fluvial sedimentary sand body are carried out respectively. the optimized conclusions and parameters provide technical support for the field implementation. This electric simulation experimental method can accurately simulate the influence of the parameters of horizontal well fracturing completion on productivity, and has certain guiding significance for horizontal well fracturing completion design.
【作者单位】：中国石化石油勘探开发研究院中国石油化工集团公司海相油气藏开发重点实验室;
【基金】：国家科技重大专项(2016ZX05002-005)
【分类号】：TE319

【相似文献】