蒸汽吞吐割缝筛管水平井井筒入流规律  

Inflow performance of slotted horizontal wells in cyclic steam simulation process

作　　者：陈会娟 李明忠 刘春苗 李威威 张艳玉 

机构地区：[1]中国石油大学石油工程学院,山东青岛266580 [2]中海油能源发展工程技术公司钻采工程研究所,天津300452

出　　处：《中南大学学报（自然科学版）》2016年第6期2037-2044,共8页Journal of Central South University:Science and Technology

基　　金：国家科技重大专项(2011ZX05024-005);中央高校基本科研业务费专项资金资助项目(14CX06025A)~~

摘　　要：基于割缝筛管完井水平井实际管柱结构,考虑流体在水平井筒内的变质量流特性,建立蒸汽吞吐水平井注入和产出过程中井筒与储层耦合数学模型,并采用迭代法对其进行求解;将其计算结果与数值模拟软件计算结果进行对比,验证模型的准确性;以此为基础,系统研究蒸汽吞吐注入和生产过程中水平井井筒入流规律。研究结果表明:蒸汽吞吐注入过程中,井筒压力与温度从水平井跟端到趾端逐渐降低,但降低幅度并不显著;蒸汽入流剖面与地层温度沿井筒呈凹型分布,且随着时间的增加,蒸汽入流剖面与地层温度沿井筒的非均质性增加;蒸汽吞吐生产过程中,井筒压力从水平井趾端到跟端依次降低,而井筒温度却先降低后稍微增加;原油与地层水入流剖面沿井筒呈凹型分布。Based on the string structure of the slotted horizontal wells, considering the variable mass flow of the fluid in horizontal wellbore, a coupled reservoir/wellbore model of horizontal wells for cyclic steam simulation was established.An iterative substitution method was used to solve the model. Based on the model, the inflow performance of the horizontal wells in steam injection period and fluid production period for cyclic steam simulation were studied. The results show that the wellbore pressure and temperature drop from the horizontal wellbore heel to toe in the steam injection period, but the decreased scope is insignificant. The steam influx rate and reservoir temperature profile along the horizontal wellbore is the concave shape and the non-uniformity of the steam influx rate and reservoir temperature along the wellbore increases with the increase of time. In the fluid production period, the wellbore pressure drops from the horizontal toe to the heel, but the wellbore temperature first decreases and then increases slightly. The oil and water influx rate profile along the horizontal wellbore are also the concave shape.

关 键 词：割缝筛管 水平井 蒸汽吞吐 井筒压力 井筒温度 入流剖面 

分 类 号：TE319[石油与天然气工程—油气田开发工程]