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.

Key words: steam assisted gravity drainage(SAGD), shale interlayer between injector and producer, drainage channel, oil rate, cumulative oil steam ratio