碳酸盐岩油藏高压扩容注水机理与指标曲线模型

IF 4.2 Q2 ENERGY & FUELS
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引用次数: 0

摘要

注水驱油是开发断裂凹陷碳酸盐岩油藏最有效的方法之一。随着注水次数的增加,开发效果逐渐失效。高压扩容注水技术的出现使老井的产量得以提高。虽然高压扩容注水技术在裂缝-岩浆储层中实践了近 10 年,但其机理仍不清楚,注水曲线也不明显。过去,只能通过测量注采体积来评价其效果。在本研究中,我们分析了高压扩容和注水的机理。我们提出了高压扩容注水的流体交换指标,并建立了适合裂缝-岩浆储层高压扩容注水曲线的离散模型。我们提出了以下机制:补充能量、增加能量、置换能量和释放能量。塔里木盆地哈拉哈塘油田 HA6X 井的高压产能扩张和注水曲线可以确定上述机制。通过求解基本模型,发现储层Ⅰ和储层Ⅱ的相对误差分别为 1.9%和 1.5%,现场实例的应用证明了我们提出的高压扩容注水指标曲线是合理可靠的。该研究为碳酸盐岩油藏高压扩容注水技术提供了理论支持。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
High-pressure capacity expansion and water injection mechanism and indicator curve model for fractured-vuggy carbonate reservoirs

Water injection for oil displacement is one of the most effective ways to develop fractured-vuggy carbonate reservoirs. With the increase in the number of rounds of water injection, the development effect gradually fails. The emergence of high-pressure capacity expansion and water injection technology allows increased production from old wells. Although high-pressure capacity expansion and water injection technology has been implemented in practice for nearly 10 years in fractured-vuggy reservoirs, its mechanism remains unclear, and the water injection curve is not apparent. In the past, evaluating its effect could only be done by measuring the injection-production volume. In this study, we analyze the mechanism of high-pressure capacity expansion and water injection. We propose a fluid exchange index for high-pressure capacity expansion and water injection and establish a discrete model suitable for high-pressure capacity expansion and water injection curves in fractured-vuggy reservoirs. We propose the following mechanisms: replenishing energy, increasing energy, replacing energy, and releasing energy. The above mechanisms can be identified by the high-pressure capacity expansion and water injection curve of the well HA6X in the Halahatang Oilfield in the Tarim Basin. By solving the basic model, the relative errors of Reservoirs I and II are found to be 1.9% and 1.5%, respectively, and the application of field examples demonstrates that our proposed high-pressure capacity expansion and water injection indicator curve is reasonable and reliable. This research can provide theoretical support for high-pressure capacity expansion and water injection technology in fracture-vuggy carbonate reservoirs.

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来源期刊
Petroleum
Petroleum Earth and Planetary Sciences-Geology
CiteScore
9.20
自引率
0.00%
发文量
76
审稿时长
124 days
期刊介绍: Examples of appropriate topical areas that will be considered include the following: 1.comprehensive research on oil and gas reservoir (reservoir geology): -geological basis of oil and gas reservoirs -reservoir geochemistry -reservoir formation mechanism -reservoir identification methods and techniques 2.kinetics of oil and gas basins and analyses of potential oil and gas resources: -fine description factors of hydrocarbon accumulation -mechanism analysis on recovery and dynamic accumulation process -relationship between accumulation factors and the accumulation process -analysis of oil and gas potential resource 3.theories and methods for complex reservoir geophysical prospecting: -geophysical basis of deep geologic structures and background of hydrocarbon occurrence -geophysical prediction of deep and complex reservoirs -physical test analyses and numerical simulations of reservoir rocks -anisotropic medium seismic imaging theory and new technology for multiwave seismic exploration -o theories and methods for reservoir fluid geophysical identification and prediction 4.theories, methods, technology, and design for complex reservoir development: -reservoir percolation theory and application technology -field development theories and methods -theory and technology for enhancing recovery efficiency 5.working liquid for oil and gas wells and reservoir protection technology: -working chemicals and mechanics for oil and gas wells -reservoir protection technology 6.new techniques and technologies for oil and gas drilling and production: -under-balanced drilling/gas drilling -special-track well drilling -cementing and completion of oil and gas wells -engineering safety applications for oil and gas wells -new technology of fracture acidizing
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