稠油油藏井间泥岩夹层对双水平井SAGD开发效果的影响
Effects of Shale Interlayers Between Injector-producer on SAGD Performance with Dual-Horizontal Wells for Heavy Oil Reservoir

摘要： 为定量描述稠油油藏蒸汽辅助重力泄油(SAGD)开采过程中注采井间夹层对双水平井泄油通道与开发效果的影响，针对新疆油田A区块，利用CMG数值模拟软件建立了表征SAGD注采井间夹层的数值模拟模型，对注采井间存在不同大小、间距及物性夹层情况下的SAGD蒸汽腔发育形态与开发效果进行对比，得到了稠油油藏夹层非均质影响SAGD开发的临界特征参数。矿场实际的非均质SAGD井组夹层展布特征、蒸汽腔发育特征及生产效果对比结果表明，得到的结论与矿场实践一致，因此可用于指导并实现经济、高效的稠油油藏双水平井SAGD开发。
Abstract: In order to describe the effects of the interlayers between injector and producer on the drainage channel and performance of steam assisted gravity drainage (SAGD) with dual horizontal wells quantificationally, a series of numerical simulation models characterizing SAGD reservoir wells with the interlayers between producer and injector (BIP) were established by numerical simulation software-CMG based on Block A in Xinjiang Oilfield. The development of steam chambers and SAGD performances under different sizes, distances and physical properties of BIP interlayers were contrastively analyzed to obtain the threshold parameters affecting SAGD development. The result in this paper agrees with the field practices by contrast, which has an important guiding significance to the realization of dualhorizontal SAGD economical and efficient development