公开(公告)号：US5421408A

公开(公告)日：1995-06-06

申请号：US227837

申请日：1994-04-14

申请人： Richard F. Stoisits ,  Miroslav M. Kolpak ,  Gordon J. Krist ,  Tuan D. Ma ,  Richard L. Payne ,  Jeffry A. Rugen ,  Anthony C. Schwarz ,  Michael C. Vincent ,  Gary K. Youngren

发明人： Richard F. Stoisits ,  Miroslav M. Kolpak ,  Gordon J. Krist ,  Tuan D. Ma ,  Richard L. Payne ,  Jeffry A. Rugen ,  Anthony C. Schwarz ,  Michael C. Vincent ,  Gary K. Youngren

IPC分类号： E21B33/068 ,  E21B43/16

CPC分类号： E21B33/068 ,  E21B43/16

摘要： Natural gas is reinjected into an earth formation for storage and/or stimulating the recovery of hydrocarbon liquids by mixing the gas with water at a pressure sufficient to maintain bubble flow of gas dispersed in a water flowstream in a range of volumetric gas fraction up to about twenty percent of total flow. A water and gas distribution system includes static flow mixers for maintaining uniform distribution of gas bubbles in the water flow stream through the distribution conduits. The mixers may comprise multi-stage bladed mixing elements of the same or opposite pitch and extending across the intersection of branch conduits with the main conduit of the distribution system. The water and gas may be mixed in an injection well having a tubing string extending within the well and having a distal end below the point of injection into an earth formation so that a uniform gas and water mixture enters the formation through the well perforations.

摘要翻译： 将天然气重新注入地层，用于储存和/或刺激烃类液体的回收，通过将气体与水混合，其压力足以将气体分散在水流中的气泡流在一定范围内，体积气体分数高达约 总流量的百分之二十。 水和气体分配系统包括静态流动混合器，用于保持通过分配导管的水流中气泡的均匀分布。 混合器可以包括具有相同或相对间距的多级叶片混合元件，并且延伸穿过分支管道与分配系统的主管道的交点。 水和气体可以在具有在井内延伸的管柱的注射井中混合，并且具有在注入点下方的远端到地层中，使得均匀的气体和水混合物通过井眼穿入地层。