西安石油大学学报（自然科学版）2024，Vol.39Issue(1)：34-39,6.DOI:10.3969/j.issn.1673-064X.2024.01.004
低渗油田N2驱气窜特征及泡沫防窜实验研究
Experimental Study on Gas Channeling Characteristics and Foam Channeling Prevention in N2 Displacement of Low Permeability Oilfields
摘要
Abstract
Aiming at the problem of gas channeling in nitrogen flooding of B oilfield,the production characteristics and gas channeling law of N2 flooding are analyzed through laboratory physical simulation experiments of long cores.As B oilfield has the characteristics of high temperature,high salt and low permeability,the suitable foam channeling prevention system was optimized by Waring blender stir-ring method,and the channeling prevention effect and injection timing of the system were studied through physical simulation experi-ments.The experimental results show that the gas flooding process can be divided into three stages by taking recovery degree and cumu-lative gas-oil ratio as indicators:oil production without gas stage,oil-gas production stage and gas channeling stage.The composition of the foam channeling prevention system suitable for the target oilfield is the solution of 0.6％ZHDQ-5 foaming agent+0.1％WP-1 foam stabilizer.The plugging ratio of the system can reach 90％.It is recommended to inject the foam channeling prevention system when the cumulative gas-oil ratio reaches 20 cm3/cm3,which can improve the oil recovery by 17％on the basis of previous gas flood-ing.关键词
N2驱/气窜特征/泡沫防窜/封堵率/驱油效率Key words
N2 flooding/gas channeling characteristics/foam anti-channeling/plugging ratio/oil displacement efficiency分类
能源科技引用本文复制引用
刘浩洋,赵军,吴彬彬,左清泉,陈平,胡雪,郑继龙..低渗油田N2驱气窜特征及泡沫防窜实验研究[J].西安石油大学学报（自然科学版）,2024,39(1):34-39,6.基金项目
海油发展科研项目"海上稠油油田注气开发可行性实验研究"(HFKJ-GJ2020-04) （HFKJ-GJ2020-04）
