2016年8月 SE
大庆石油地质与开发
Petroleum Geology and Oilfield Development in Daqing
DOI：10.3969/J.ISSN.1000-3754.2016.04.024
二氧化碳驱最小混相压力动态预测方法
黄世军＇杨静宜？王利明阎逸群'董特特
（1.中国石油大学石油工程学院，北京102249；2.大庆油田有限责任公司第一采油厂，黑龙江大庆163001）
Aug-，2016 Vol. 35 No. 4
用，CO，与原油接触后，原油的组分会发生变化。针对这种情况，利用数值模拟多次接触法，对低渗透油藏CO，混相驱过程中原油组分的变化规律进行了研究。结果表明：CO，对原油组分中C，和C的抽提能力较强，其变化规律均呈下降趋势；对C;和Ci,的抽提能力次之，其变化规律均呈先平稳后下降趋势，CO，对Cis和Cis的抽提能力较弱。基于组分变化规律建立了适合目标区块的二氧化碳驱最小混相压力动态预测公式，为CO，最小混相压力动态预测提供了一种新方法。
关键调：低渗透油藏；二氧化碳驱；原油组分变化；最小混相压力；动态预测
中图分类号：TE357
文献标识码：A
文章编号：1000-3754（2016）04-0121-05
DYNAMICPREDICTINGMETHODOF THEMINIMUMMISCIBILITY
PRESSUREFORCO,FLOODING
HUANG Shijun', YANG Jingyi°,WANG Liming', YAN Yiqun', DONG Tete
(1.College of Petroleum Engineering,China University of Petroleum, Bejing 102249, China; 2. No.1 Production Plant of PetroChina Daqing Oilfield Co. Lud., Daqing 163001, China)
Abstract: The determination of the minimum miscibility pressure is the key of operating CO, miscible flooding. In the process of the displacement, thanks to the many contact and intermixing actions between the CO, and oil, and moreover the exchange effect, the oil components change to a certain degree. In the light of the instance, with the help of the multi-contact method in the numerical simulation, the variation laws of the components are researched in the course of the CO, miscibility flooding in the low-permeability oil reservoir. The achievements show that the ex-tracting capacities of the CO, to Component C and C, are pretty stronger, the change rules present drop trends; the next is Component Cand Ciz, the laws are first steady and then decrease with time; the most weakest ones are Component Cts and Cs. On the bases of the above regulations, the dynamic predicting formula is established for the target block's CO,-flooding minimum miscibility pressure, thus a new dynamic predicting method is initiated for the pressure of the CO, displacement.
Key words: low-permeability oil reservoir; CO, flooding/displacement; oil component change/variation; minimum
收稿日期：2015-09-02
改回日期：2015-22-20
基金项目：国家重点基础研究发展计划“973”课题“二氧化碳减排、储存和资源化利用的基础研究”
（2011CB707305）。
作者简介：黄世军，男，1974年生，副教授，博士，主要从事油气渗流机理与应用研究。
E-mail ;fengyun7407@ 163. com
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