Development Performance and Influencing Factors of Bottom-Water Drive in Fractured-Vuggy Collapse-Packed Reservoirs

doi:10.7657/XJPG20250409

Abstract

Abstract:

To address the challenges of unclear fluid migration patterns and difficulties in predicting displacement efficiency during bottom-water drive development of fractured-vuggy collapse-packed reservoirs, by employing multi-model physical simulations based on similarity criteria, and incorporating reservoir properties, fluid migration patterns and conditions, two conceptual models for collapse-packed reservoirs were established. Physical simulation experiments were conducted under varying conditions, including medium-filling types, flow rate, and initial oil saturation. The variations in liquid production rate, water breakthrough time, water cut, and recovery factor in different models and with different influencing factors were investigated. The results demonstrate that the liquid production rate curve can be used to judge water breakthrough time which is primarily governed by initial oil saturation and flow rate. After water breakthrough, water cut typically exhibits a rapid rise, followed by fluctuations. The recovery factor shows a negative correlation with flow rate.

Key words: fractured-vuggy reservoir, collapse-packed reservoir, bottom-water drive, physical simulation, liquid production rate, water breakthrough time, water cut, recovery factor

CLC Number:

TE341

YANG Debin, YU Tengfei, GUO Chuan, ZHONG Wei, ZHAO Yuan. Development Performance and Influencing Factors of Bottom-Water Drive in Fractured-Vuggy Collapse-Packed Reservoirs[J]. Xinjiang Petroleum Geology, 2025, 46(4): 465-469.

Figures/Tables 6

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Table 1.

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实验方案	模型	原始含油量/g	流速/ （mL·min^-1）	见水时间/min
实验方案	模型	原始含油量/g	流速/ （mL·min^-1）	产液速度曲线判断	压力曲线判断
A1	基本模型	2 185.63	60	35		不明显
A2	基本模型	2 919.01	60	45		48
A3	基本模型	3 807.50	60	59		不明显
B1	均匀模型	2 786.86	15	181		不明显
B2	均匀模型	2 564.52	30	91		不明显
B3	均匀模型	2 570.89	60	35		34
C1	封隔模型	2 306.57	15	144		不明显
C2	封隔模型	2 512.17	30	76		88
C3	封隔模型	2 502.15	60	35		38