This paper carried out experimental studies on the influence of vertical heterogeneity of reservoir on the steam drive effect after multiple-round steam stimulations. Taking the actual productive process of a heavy oil reservoir as an example, a physical model for the vertical heterogeneity was established. First, under the initial reservoir conditions, conduct multiple rounds of steam stimulations to obtain the initial reservoir conditions of steam drive, and then carry out physical simulation of steam drive, including the simulation of the horizontal reservoir and the tilted one. The development of temperature field and the oil-water output changes indicate that when the steam drive is conducted after the steam stimulations, the steam advances along the high permeability layer with better steam stimulation effect, once it gets a breakthrough, the swept volume will not change. For the tilted reservoir, due to the beneficial effects of the gravity drainage, its displacement effect is better than the horizontal one, which provides an important basis for the adjustment of layers and the section of methods of gas injection when the steam simulation is converted into steam drive.
Abstract-Tridimensional injection-production well pattern has significant advantages on development of very thick buried hill reservoirs. But optimization is needed because the space configuration relation of buried hill reservoirs is very complicated. Reservoir numerical simulation techniques are applied in this study to research a buried hill reservoir. Injection-production well groups of vertical-horizontal wells and horizontal-horizontal wells are optimized respectively and comparative analyzed, based on the reliable reservoir numerical simulation model and considering about well types, well spatial positions and distance between the wells. The result shows that in tridimensional injection-production well patterns of vertical-horizontal wells, vertical injection well at bottom with an upper horizontal production well and vertical well at an angle of 45 degrees to end of horizontal well is the best configuration. And in that of horizontalhorizontal wells, the horizontal plane at an angle of 60 degrees to the plane that two horizontal wells in (an upper production well with a lower production well) is the best configuration, and this is more effective than that of verticalhorizontal wells. This study can provide support for the design of tridimensional injection-production well patterns of buried hill reservoirs.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.