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1. 发明申请

WO03078791A2 METHOD AND APPARATUS FOR INJECTING STEAM INTO A GEOLOGICAL FORMATION 审中-公开
标题翻译：将蒸汽注入地质形成的方法和装置
公开(公告)号：WO03078791A2
公开(公告)日：2003-09-25
申请号：PCT/US0307771
申请日：2003-03-13
申请人： WEATHERFORD LAMB , HOWARD WILLIAM F , SIMS JACKIE C , ROBINSON DUDLEY L , SCHMIDT RONALD W
发明人： HOWARD WILLIAM F , SIMS JACKIE C , ROBINSON DUDLEY L , SCHMIDT RONALD W
IPC分类号： E21B41/00 , E21B43/24
CPC分类号： E21B41/0078 , E21B43/24
摘要： The present invention generally provides a method and apparatus for injecting a compressible fluid at a controlled flow rate into a geological formation at multiple zones of interest. In one aspect, the invention provides a tubing string with a pocket and a nozzle at each isolated zone. The nozzle permits a predetermined, controlled flow rate to be maintained at higher annulus to tubing pressure ratios. The nozzle includes a diffuser portion to recover lost steam pressure associated with critical flow as the steam exits the nozzle and enters a formation via perforations in wellbore casing. In another aspect, the present invention assures that the fluid is supplied uniformly to a long horizontal wellbore by providing controlled injection at multiple locations that are distributed throughout the length of the wellbore. In another aspect, the invention ensures that saturated steam is injected into a formation in a predetermined proportion of water and vapor by providing a plurality of apertures between a tubing wall and a pocket. The apertures provide distribution of steam that maintains a relative mixture of water and vapor. In another aspect of the invention, a single source of steam is provided to multiple, separate wellbores using the nozzle of the invention to provide a controlled flow of steam to each wellbore.
摘要翻译：本发明通常提供一种用于将受控流速的可压缩流体注入到多个感兴趣区域的地质层中的方法和装置。在一个方面，本发明提供了在每个隔离区域处具有口袋和喷嘴的油管柱。喷嘴允许将预定的受控流速保持在较高的环空与管道压力比。喷嘴包括扩散器部分，以在蒸汽离开喷嘴并通过井眼套管中的穿孔进入地层时回收与临界流相关的损失的蒸汽压力。在另一方面，本发明通过在分布在井眼的整个长度上的多个位置提供受控喷射，确保将流体均匀地供应给长的水平井眼。在另一方面，本发明通过在管壁和袋之间提供多个孔来确保饱和蒸汽以预定比例的水和蒸汽注入地层中。孔提供保持水和蒸气的相对混合物的蒸汽分布。在本发明的另一方面，使用本发明的喷嘴将单一蒸汽源提供给多个单独的井筒，以向每个井筒提供受控的蒸汽流。

2. 发明专利

CA2478885A1 METHOD AND APPARATUS FOR INJECTING STEAM INTO A GEOLOGICAL FORMATION 未知
公开(公告)号：CA2478885A1
公开(公告)日：2003-09-25
申请号：CA2478885
申请日：2003-03-13
申请人： WEATHERFORD LAMB
发明人： ROBINSON DUDLEY L , HOWARD WILLIAM F , SIMS JACKIE C , SCHMIDT RONALD W
IPC分类号： E21B41/00 , E21B43/24
摘要： The present invention generally provides a method and apparatus for injectin g a compressible fluid at a controlled flow rate into a geological formation a t multiple zones of interest. In one aspect, the invention provides a tubing string with a pocket and a nozzle at each isolated zone. The nozzle permits a predetermined, controlled flow rate to be maintained at higher annulus to tubing pressure ratios. The nozzle includes a diffuser portion to recover lo st steam pressure associated with critical flow as the steam exits the nozzle a nd enters a formation via perforations in wellbore casing. In another aspect, t he present invention assures that the fluid is supplied uniformly to a long horizontal wellbore by providing controlled injection at multiple locations that are distributed throughout the length of the wellbore. In another aspec t, the invention ensures that saturated steam is injected into a formation in a predetermined proportion of water and vapor by providing a plurality of apertures between a tubing wall and a pocket. The apertures provide distribution of steam that maintains a relative mixture of water and vapor. In another aspect of the invention, a single source of steam is provided to multiple, separate wellbores using the nozzle of the invention to provide a controlled flow of steam to each wellbore.

3. 发明专利

CA2478885C METHOD AND APPARATUS FOR INJECTING STEAM INTO A GEOLOGICAL FORMATION 未知
公开(公告)号：CA2478885C
公开(公告)日：2007-09-11
申请号：CA2478885
申请日：2003-03-13
申请人： WEATHERFORD LAMB
发明人： SIMS JACKIE C , SCHMIDT RONALD W , ROBINSON DUDLEY L , HOWARD WILLIAM F
IPC分类号： E21B43/24 , E21B41/00
摘要： The present invention generally provides a method and apparatus for injectin g a compressible fluid at a controlled flow rate into a geological formation a t multiple zones of interest. In one aspect, the invention provides a tubing string with a pocket and a nozzle at each isolated zone. The nozzle permits a predetermined, controlled flow rate to be maintained at higher annulus to tubing pressure ratios. The nozzle includes a diffuser portion to recover lo st steam pressure associated with critical flow as the steam exits the nozzle a nd enters a formation via perforations in wellbore casing. In another aspect, t he present invention assures that the fluid is supplied uniformly to a long horizontal wellbore by providing controlled injection at multiple locations that are distributed throughout the length of the wellbore. In another aspec t, the invention ensures that saturated steam is injected into a formation in a predetermined proportion of water and vapor by providing a plurality of apertures between a tubing wall and a pocket. The apertures provide distribution of steam that maintains a relative mixture of water and vapor. In another aspect of the invention, a single source of steam is provided to multiple, separate wellbores using the nozzle of the invention to provide a controlled flow of steam to each wellbore.

4. 发明专利

AU2003218142A1 METHOD AND APPARATUS FOR INJECTING STEAM INTO A GEOLOGICAL FORMATION 未知
公开(公告)号：AU2003218142A1
公开(公告)日：2003-09-29
申请号：AU2003218142
申请日：2003-03-13
申请人： WEATHERFORD LAMB
发明人： SIMS JACKIE C , ROBINSON DUDLEY L , SCHMIDT RONALD W , HOWARD WILLIAM F
IPC分类号： E21B41/00 , E21B43/24
摘要： The present invention generally provides a method and apparatus for injecting a compressible fluid at a controlled flow rate into a geological formation at multiple zones of interest. In one aspect, the invention provides a tubing string with a pocket and a nozzle at each isolated zone. The nozzle permits a predetermined, controlled flow rate to be maintained at higher annulus to tubing pressure ratios. In another aspect, the present invention assures that the fluid is supplied uniformly to a long horizontal wellbore by providing controlled injection at multiple locations that are distributed throughout the length of the wellbore. In another aspect, the invention ensures that saturated steam is injected into a formation in a predetermined proportion of water and vapor by providing a plurality of apertures between a tubing wall and a pocket.

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