缝洞型油藏垮塌堆积储集体底水驱开发效果及影响因素

doi:10.7657/XJPG20250409

摘要/Abstract

摘要： 针对缝洞型油藏垮塌堆积储集体底水驱开发过程中流体运移规律不清、驱替效率预测难的问题，采用基于相似性准则的多模型物理模拟，结合油藏储集体特性、流体运移模式及条件，建立了2种垮塌堆积储集体概念模型，并开展了不同介质充填状态、流速、原始含油量等因素下的物理模拟实验，探究了不同模型不同影响因素下产液速度、见水时间、含水率和采收率的变化情况。结果表明：产液速度曲线可用于判断见水时间，见水时间主要受制于原始含油量和流速；含水率在见水后通常经历急剧上升并上下波动的变化过程；采收率与流速呈负相关关系。

关键词: 缝洞型油藏, 垮塌堆积储集体, 底水驱, 物理模拟, 产液速度, 见水时间, 含水率, 采收率

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

中图分类号:

TE341

杨德彬, 于腾飞, 郭川, 钟伟, 赵渊. 缝洞型油藏垮塌堆积储集体底水驱开发效果及影响因素[J]. 新疆石油地质, 2025, 46(4): 465-469.

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.

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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