摘要
根据蒸汽吞吐井的生产特征，建立了广义流入动态关系的合理性边界条件，确定了其涵盖性特征。以油藏数值模拟为手段，对蒸汽吞吐井弹性开采过程中注汽参数的敏感性进行了分析，结果表明周期注汽量、蒸汽干度和采液速度是影响蒸汽吞吐效果的主要因素。以国内几个主要稠油油田的油藏及蒸汽吞吐井动态为基础，建立了不同类型的油藏和油井蒸汽吞吐的流入动态关系。不同类型油藏和油井的蒸汽吞吐流入动态具有相似特性，即都具有油井产能关系的线性特征、油藏平均压力随累积采注比（ＰＩＲ）变化的线性特征、极限产液量随ＰＩＲ变化的幂指数型特征、井底温度随ｌｎ（ＰＩＲ）变化的逻辑斯蒂函数型特征和含水率随ＰＩＲ变化的指数型特征等。将研究结果与草平１井第二周期的矿场实际生产资料进行了对比。
Based on temperature and watercut trends of steam soak well, a new concept about
extensive inflow performance relationship(EIPR) for steam stimulation well is proposed. The
new EIPR overlaps reasonable well performances and isotherm IPR under extreme production
conditions. Sensitivity of injection parameters is studied. It shows that the quantity of steam
injected into well (cold water equivalent), steam quality at bottom hole, and production rate are
the major factors affecting oil increment. EIPR is obtained from some steam soak wells of
several major heavy oil reservoirs in China. The ratio of produced cumulative liquids to
injected steam (\%PIR\%) is the major factor affecting EIPR which has a similar feature for
different kinds of reservoirs and wells. The production ratepressure performance relation is in
linear form. Reservoir pressure has a linear form versus. PIR. Maximum liquid production rate
is an exponent form versus. PIR. Bottom hole temperature has a logistic form versus.
ln(\%PIR\%). Watercut is an exponent form versus. PIR. The prediction performance obtained
from the new EIPR of a horizontal well has a good agreement with the field data.
出处
《石油大学学报（自然科学版）》
CSCD
1999年第3期32-36,共5页
Journal of the University of Petroleum,China(Edition of Natural Science)
关键词
复合油藏
蒸汽吞吐井
注入动态
压力
产能
composite reservoir
steam stimulation well
inflow performance relationship
reservoir
pressure
productivity
