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首页> 外文会议>SPE Improved Oil Recovery Conference >Polymer Oil Recovery Experiments in Different Geometries for Improved Upscaling of Viscous Oil Reservoirs
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Polymer Oil Recovery Experiments in Different Geometries for Improved Upscaling of Viscous Oil Reservoirs

机译：不同几何形状的聚合物油回收实验，提高粘性油藏的升高

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Upscaling the simulation of unstable displacement of heavy oil is challenging because accurately modeling the development and propagation of viscous instabilities within a simulation grid-block is next to impossible. Various models have been developed that are capable of history matching oil recovery results, however, there is little lab data to allow for validated scale-up of these viscous fingering model. We present experimental results from different geometries, i.e. cylindrical corefloods, 2D slabs and 3D blocks, where a viscous oil is displaced by water and polymer solutions, under pressure-constrained injection. Waterflood and polymer flood oil recovery experiments were performed in ‘2-Dimensional’ (2D) sandstone slabs (12" by 12" by 1") and ‘3-Dimensional’ (3D) blocks (12" by 12" by 4") of sandstone and compared with oil recovery experiments through linear ‘1-Dimensional’ (1D) cylindrical cores. Experiments were performed with a high viscosity (540 cP) mineral oil at room temperature. UTCHEM (a software product from The University of Texas at Austin) with viscous fingering model was used to model the experiments and identify parameters for scaling the process to a field scale. As expected, water breakthrough was accelerated as we moved from cylindrical cores to 2D slabs to 3D blocks. For the experiments conducted, gravity instability had a minimal effect compared to viscosity instability, even for the 3D blocks. Pseudo relative permeability curves based on the modified viscous fingering model were developed to match the 1D experiment. The same pseudo parameters showed excellent scalability across the varying experimental geometries (1D, 2D and 3D). These results indicated that the effective finger width did not vary for the different geometries.
机译：升级重型油不稳定位移的模拟是具有挑战性的，因为准确地建模了粘性无限度内的粘性栅栏内的发展和传播，因此是不可能的。已经开发了各种模型，其能够匹配匹配的石油恢复结果，然而，有很少的实验室数据来允许验证这些粘性指法模型的缩放。我们呈现不同几何形状的实验结果，即圆柱形核心，2D板和3D块，其中粘性油通过水和聚合物溶液置换，在压力受压注射下。在“二维”（2D）砂岩板（12英寸×1“）和”三维“（3D）块（12英寸×12”×4“）中进行水氟化物和聚合物洪水恢复实验砂岩与通过线性的1立维'（1D）圆柱芯相比的油回收实验。在室温下用高粘度（540cp）矿物油进行实验。 UTCHEM（来自奥斯汀大学的软件产品）使用粘性指法模型用于模拟实验并确定将过程扩展到现场规模的参数。正如预期的那样，当我们从圆柱形核心移动到2D板到3D块时，水突破加速了。对于进行的实验，与粘度不稳定性相比，重力不稳定性甚至对于3D块相比具有最小的效果。开发了基于改性粘性指法模型的伪相对渗透率曲线以匹配1D实验。相同的伪参数在不同的实验几何形状（1D，2D和3D）上显示出优异的可扩展性。这些结果表明，不同几何形状的有效手指宽度没有变化。

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