Experimental of Water Drive Sweep Efficiency for Typical Stacking Mode of Deep Water Channel

doi:10.11885/j.issn.1674-5086.2021.11.25.02

Abstract

Abstract: Aiming at the typical deep-water turbidite composite stack channel model, a large-scale two-dimensional physical model was established, and the water drive laboratory experiment was carried out. The core-scale numerical simulation was further explored to study the influence of the different horizontal and vertical stacking ratio to the development performance. Results show that the middle part of the channel and the overlapping area are the main flow line area, with high sweep efficiency and displacement efficiency. While the sweep efficiency is low at the upper and lower parts of the channel with relatively poor physical properties, which also shows higher potential of remaining oil. The stacking ratio of channels in different phases is an important factor affecting the connectivity between injection and production wells and the remaining oil distribution. With higher horizontal and vertical stacking ratio, performance in the main streamline area becomes better, while the sweep efficiency in the non-main streamline area becomes worse. For the typical deep-water turbidite composite channel reservoir, it is recommended to maximize the perforation perfection of non-main sand bodies to increase sweep efficiency and increase recovery.

Key words: deep water turbidite sandstone, stack mode, laboratory water flooding experiment, sweep efficiency, remaining oil

CLC Number:

TE312

YANG Li, HU Yisheng, LIU Guangwei, GUO Ping, YANG Baoquan. Experimental of Water Drive Sweep Efficiency for Typical Stacking Mode of Deep Water Channel[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2022, 44(4): 71-80.

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