稠油自乳化水驱开发规律

doi:10.7657/XJPG20240212

摘要/Abstract

摘要：

受原油性质的影响，稠油自乳化水驱开发与常规水驱开发不同，传统的稀油水驱理论不适用于稠油水驱开发。以中国某稠油自乳化水驱油藏流体参数为基础，通过室内实验和数值模拟，研究自乳化水驱开发规律，揭示自乳化水驱机理和主要影响因素。采用新的数值模拟方法揭示自乳化水驱的稳定驱替阶段为类“活塞式”驱油模式，开发全过程可分为4个阶段，即纯油阶段、过渡阶段、平台阶段和水油比快速上升阶段。渗透率级差和原油黏度是影响自乳化水驱含水率的主要因素，其次是渗透率和注水速度。

关键词: 稠油, 自乳化, 水驱, 含水率, 平台阶段, 关键机理, 影响因素, 数值模拟

Abstract:

Influenced by crude oil properties, water flooding with self-emulsification in heavy oil reservoirs is different from conventional water flooding, and the conventional theories for light oil water flooding are not applicable to heavy oil reservoirs. Taking a heavy oil reservoir with self-emulsification water flooding and the reservoir fluid parameters in China as cases, the water flooding with heavy oil self-emulsification was studied through laboratory experiments and numerical simulations to clarify key mechanisms and main influencing factors. The new numerical simulation method reveals that the stable displacement stage of the self-emulsification water flooding is a quasi-piston oil displacement pattern. The development process can be divided into four stages, namely pure oil, transition, plateau and rapid WOR increase. Permeability ratio and crude oil viscosity are the main factors affecting the water cut in self-emulsification water flooding, followed by permeability and water injection rate.

Key words: heavy oil, self-emulsification, water flooding, water cut, plateau stage, key mechanism, influencing factor, numerical simulation

中图分类号:

TE341

石兰香, 唐文军, 周游, 王伯军. 稠油自乳化水驱开发规律[J]. 新疆石油地质, 2024, 45(2): 228-234.

SHI Lanxiang, TANG Wenjun, ZHOU You, WANG Bojun. Study on Water Flooding With Self-Emulsification in Heavy Oil Reservoirs[J]. Xinjiang Petroleum Geology, 2024, 45(2): 228-234.

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