石油与天然气地质 ›› 1999, Vol. 20 ›› Issue (1): 26-29.doi: 10.11743/ogg19990106

• 论文 • 上一篇    下一篇

姬塬延安组储层水驱油效率及影响因素

孙卫, 何娟   

  1. 西北大学, 陕西西安 710069
  • 收稿日期:1998-12-18 出版日期:1999-03-25 发布日期:2012-01-18

DISPLACING EFFICIENCY AND AFFECTING FACTORS OF RESERVOIRS IN YAN'AN FORMATION, JIYUAN REGION

Sun Wei, He Juan   

  1. Northwest University, Xi'an, Shaanxi
  • Received:1998-12-18 Online:1999-03-25 Published:2012-01-18

PDF (PC)

769

被引次数

79

摘要：

应用真实砂岩微观模型对樊家川、元城油田侏罗系延9、延10油层两相驱替过程进行了观察、研究。实验结果表明：研究区微观砂岩模型无水期驱油效率低;驱油效率与注入水入口压力成反比,而与渗透率成正比;樊中区驱油效率为三个区块中最高的,延9-2为延9油层组三个小层中驱油效率最高的;影响驱油效率的主要因素是驱替压力、渗透率、孔隙结构非均质性和视孔喉体积比。

关键词: 姬塬, 延安组, 微观模型, 驱油效率, 渗透率, 非均质性

Abstract:

Based on the true micromodels of sandstone,the twophase displacing process of oil by water of the Jurassic Y-9 and Y-10 oil reservoirs in Fanjiachuan-Yuancheng oilfields was observed.The results show that the displacing efficiency was in inverse proportion to the entering pressure and direct proportion to permeability.The displacing efficiency of Fanzhong area and Y-9～Y-2 substratum were the best among the three zones and the three substratums of Y-9 reservoirs respectively.The main factors that affecting the displacing efficiency are drive pressure,permeability,the microheterogeneity of pore structure and apparent porethroat volume ratio.

Key words: Jiyuan , Yan'an Formation, micromodel, displacingoil efficiency, permeability, heterogeneity