油田深部调驱剂的研究及应用

深部调剖驱油技术作为厚油层层内剩余油挖潜的重要措施在油田注水开发后期起着越来越重要的作用。在综合调研国内外有关深部调剖技术的研究和应用基础上,综合分析了凝胶类、微生物类、沉淀型无机盐类和粘土颗粒类等4类调剖驱油剂在国内外的发展和应用状况,指出了它们的适用范围和特点,重点对比了本体弱凝胶(BG)、胶态分散凝胶(CDG)、黄原胶(XC)和预交联凝胶颗粒(PG)等4种常用深部调剖剂的优缺点,并对凝胶类调驱剂的交联剂选择进行了分析,分析了深部调驱剂的发展潜力和方向。

RESEARCH AND APPLICATION OF PROFILE CONTROL AND OIL DISPLACEMENT AGENT IN DEEP RESERVOIR

As one of the important measures for tapping the residual oil potentials of thick layers, the technique of profile control and oil displacement in deep reservoir plays more and more important roles during the later water injection development stage of an oilfield. On the basis of investigating the relevant techniques, this paper analyzes the development and application status of the 4 kinds of profile control and oil displacement agents like gel, microorganism, precipitable inorganic salt and clay grain, indicates their applicable scope and characteristics, compares the advantages and disadvantages of the 4 common deep profile control agents like bulk weak gel (BG), colloidal dispersion gel (CDG), xanthan gum(XC) and precrosslinked gel grain (PG), and analyzes the screening method of crosslinked agent of gel type of profile control and oil displacement agent. This paper also analyzes the development potential and direction of the profile control and oil displacement agent used in deep reservoir.