塔河油田块状底水砂岩油藏开发特征及挖潜对策

doi:10.7657/XJPG20230409

摘要/Abstract

摘要：

塔河油田块状底水砂岩油藏油层较薄，油井投产后见水、含水率上升和产量递减皆快，稳产难度大。通过对油藏开发特征分析，对油井的含水率上升模式进行分类，确定其剩余油分布特点及其主要影响因素。结果表明，影响底水油藏剩余油分布的主要因素是构造、夹层、储集层非均质性和开发方式。针对底水油藏高含水期剩余油分布特点，提出了改善开发效果的有效挖潜对策：油井提控液调流向、天然气驱及CO₂驱。数值模拟与现场实践均取得了较好的效果，可供同类油藏开发借鉴。

关键词: 塔河油田, 块状砂岩油藏, 底水油藏, 开发特征, 含水率上升模式, 剩余油分布, 挖潜对策

Abstract:

The massive sandstone reservoirs with bottom water in the Tahe oilfield are characterized by relatively thin oil layers. After oil wells are put into production, water breakthrough, water-cut rise, and production decline occur rapidly, posing challenges for stable production. Through the analysis of reservoir development characteristics, the water-cut rise patterns of wells were classified, and the remaining oil distribution and its influencing factors were determined. The results indicate that the main factors affecting the distribution of remaining oil in bottom-water reservoirs are structure, interlayer, reservoir heterogeneity and development methods. Based on the distribution of remaining oil in bottom-water reservoirs in the high water-cut period, effective potential tapping strategies were proposed to improve development efficiency, including flow adjustment by controlling fluid, natural gas flooding, and CO₂ flooding. Numerical simulations and field practices have demonstrated satisfactory results of these strategies, which provide valuable references for the development of similar reservoirs.

Key words: Tahe oilfield, massive sandstone reservoir, bottom-water reservoir, development characteristic, water-cut rise pattern, remaining oil distribution, potential tapping strategy

中图分类号:

TE343

刘丽娜, 曹飞, 刘学利, 谭涛, 郑小杰, 刘蕊. 塔河油田块状底水砂岩油藏开发特征及挖潜对策[J]. 新疆石油地质, 2023, 44(4): 450-455.

LIU Lina, CAO Fei, LIU Xueli, TAN Tao, ZHENG Xiaojie, LIU Rui. Development Characteristics and Potential Tapping Strategies of Massive Sandstone Reservoirs With Bottom Water in Tahe Oilfield[J]. Xinjiang Petroleum Geology, 2023, 44(4): 450-455.

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