摘要
蒸汽辅助重力泄油(SAGD)是一种利用液体自身重力作为主要驱动力的热采方式。国外的SAGD先导实验,大多数是利用双水平井的组合方式进行,注入井和采出井都是水平井,而在辽河油田进行的先导实验,是利用直井作为注入井、水平井作为生产井的组合方式。针对辽河油田先导实验的注采方式,利用保角变换,将水平井转化为像平面上一口环形生产井的一部分;垂直注汽井变成像平面上的原点。对直井与水平井组合的SAGD井组,按照直井划定流动单元,分别计算叠加,可以得到水平井的产量,提供了直井和水平井组合的重力泄油产量预测方法。依据辽河油田杜84块SAGD先导实验区实际生产数据,利用文中提供的方法进行计算,预测的产量结果与油田实际数据非常吻合,证明文中推导的直井与水平井组合的SAGD预测方法是可靠的。
SAGD（Steam-Assisted Gravity Drainage） is a thermal recovery method that produces only through liquid gravity. The pilot tests are mainly based on dual horizontal well abroad, or injector and producer are all horizontal wells.In Liaohe Oilfield, a pilot test with vertical injector and horizontal producer is on this way. According to the actual conditions in Liaohe Oilfield, the injector and producer are transformed through conformal mapping so that it can be analyzed through mathematical approach. With gravity drainage theory, the steam chamber is analyzed and the production of every horizontal section controlled by one vertical injector can be derived. The result is perfectly coinciding to the production data of SAGD pilot test in Block DUB4, and this indicates that the prediction method is dependable in the paper.
出处
《断块油气田》
CAS
2008年第3期71-74,共4页
Fault-Block Oil & Gas Field
关键词
SAGD
直井与水平井组合
产量预测方法
应用对比
SAGD, combination of vertical and horizontal wells, production prediction, application correlation.
