非均质油藏井网注采参数优化的可视化模拟驱替实验  

Visual simulation study on optimization of well pattern injection and production parameters in heterogeneous reservoirs

作　　者：王东英 任熵[1] 蒋明洁 张航艳 

机构地区：[1]中国石油大学(华东)石油工程学院,山东青岛266580

出　　处：《油气地质与采收率》2013年第2期95-98,117-118,共4页Petroleum Geology and Recovery Efficiency

基　　金：国家科技重大专项"整装油田特高含水期提高水驱采收率技术"(2011ZX05011-002)

摘　　要：油藏储层的非均质性是影响油、水渗流规律及采收率的内在因素,注采参数是影响非均质油藏采收率的外在因素,可视化模拟驱替实验是确定非均质油藏合理注采参数的有效手段。利用可视化动态仿真驱替实验装置进行水驱油的驱替实验,通过设计7套采用不同的注采参数的实验方案,研究非均质油藏的物性差异、井网形式以及注采参数对水驱程度的影响。研究结果表明,对于非均质油藏,注水开发初期,渗流阻力主要为油对水的阻力,驱替受储层非均质性影响不明显,随着驱替不断进行,孔隙喉道的阻力成为主要阻力,驱替越来越不均衡。对比不同实验方案,通过优化调整非均质油藏的井网形式和注采参数,可以实现最大程度的均衡驱替,改善水驱油藏开发效果,获得更高的采收率和经济效益。The heterogeneity of oil reservoir is the major internal factors affecting the oil-water seepage and oil and gas recovery of the reservoirs. The injection and production parameters have a great influence on recovery of heterogeneous reservoirs, and visualization study of microcosmic model is an effective method of determining the reasonable injection and production parameters of heterogeneous reservoirs. In this paper, seven experimental schemes are designed according to different injection-production methods and injection-production rate. Conducting water-driving-oil displacement experiments using visual dynamic simulation displacement experiment device, we study the influence on water flooding degree by physical property difference, well-pattern type and injection and production parameters of heterogeneous reservoirs. The results show that the change of water injection mode and injection and production parameters in high and low permeability areas have a great influence on recovery of heterogeneous reservoirs. The high recovery, can be obtained by flooding according to certain ratio and surrounding equilibrium flooding in high and low permeability areas.

关 键 词：采收率 注采参数 非均质油藏 可视化 驱替实验 

分 类 号：TE313.7[石油与天然气工程—油气田开发工程]