【作者】 罗宪波；

【导师】 蒲万芬；

【作者基本信息】 西南石油学院 ， 油气田开发工程， 2003， 硕士

【摘要】 油藏的非均质性和不利的油水流度比造成注入水沿高渗透层突进，大大降低了注入水的波及效率，注水井调剖技术是有效的解决手段之一。胶态分散凝胶同时具有调剖和驱油的作用，胶态分散凝胶深部调剖技术是一项新兴的提高采收率技术，该技术对于提高老油田注水开发效率有着重要意义。针对大港油田港东作业区的地质开发特征，本文研制了胶态分散凝胶体系，以NTGU装置和Brookfield粘度计作为评价工具，评价了胶态分散凝胶的性能，并通过扫描电镜和偏光显微镜观察胶态分散凝胶的微观结构。本文通过单岩心线型填砂管、并联岩心填砂管和平面五点井网注采模型进行了胶态分散凝胶调驱实验，结果表明，胶态分散凝胶具有良好的选择性，剖面改善效果好，耐冲刷，封堵高渗透层迫使后续液流改向的功能。胶态分散凝胶深部调剖剂的研制为提高高含水油田的采收率提供了一种新的方法。更多还原

【Abstract】 Heterogeneity and unfavorable mobility are two key factors to the influence of sweep efficiency, which results in early breakthrough from channel with high permeability and water-cut rapidly increases in producers. Profile modification plays an important role in improving sweep efficiency in water-flooding reservoir. Colloidal Dispersion Gel is a newly developed in-depth profile modification and flooding agent, which can be used in deep profile modification as well as polymer flooding. Focusing on GangDong oil field, we have developed a series of colloidal Dispersion Gels using polyacrylamide with high molecular weight and aluminium citrate. NTGU device and Brookfield viscometer were selected to evaluate the property of colloidal Dispersion Gel. In this paper, the microscope structure of Colloidal Dispersion Gel has been observed through scanning electronic microgrph meter and polarizing microscope. The mechanism of Colloidal Dispersion Gel technology for enhanced oil recovery has been studied by the use of liner model, layer model, and multiple in the experimentation to explore the rule of the flow of Colloidal Dispersion Gel in pores. A conclusion is drawn that Colloidal Dispersion Gel is well selective, the result of improving profile control is exciting, Colloidal Dispersion Gel has good brushability and Colloidal Dispersion Gel can shut the passage of high permeability and compel the flooding liquid to change its direction into low permeability zone.更多还原