公开(公告)号：US4166501A

公开(公告)日：1979-09-04

申请号：US936439

申请日：1978-08-24

申请人： Ralph J. Korstad ,  Wilbur L. Hall ,  Ching H. Wu ,  Alfred Brown

发明人： Ralph J. Korstad ,  Wilbur L. Hall ,  Ching H. Wu ,  Alfred Brown

IPC分类号： E21B43/16 ,  E21B43/24 ,  E21B43/30

CPC分类号： E21B43/30 ,  E21B43/16 ,  E21B43/24

摘要： The vertical or both vertical and horizontal conformance of a steam drive process is improved and steam override reduced by penetrating the zone between one injector and one producer, with one or more infill wells in fluid communication with the bottom half or less of the formation, and producing petroleum from the infill well after steam channeling has occurred at the production well. After the water cut of the fluids being produced from the infill well reaches 95 percent, the infill well is converted from a producer to an injector and steam is injected into the infill well and fluids are recovered from the production well. When one infill well is employed in a more or less aligned arrangement between injection and production wells, the vertical conformance is improved. When one or more infill wells are positioned in an offset or nonaligned arrangement relative to each injector and producer, conformance in both the horizontal and vertical planes is improved. By this multi-step process involving the infill wells, the amount of oil recovered from the portion of the formation in the recovery zone defined by the injection and production well is increased significantly.

摘要翻译： 提高蒸汽驱动过程的垂直或水平一致性，并且通过穿透一个注射器和一个生产者之间的区域减少蒸汽超驰，一个或多个填充井与地层的下半部或更少流体连通，以及 在生产井发生蒸汽通道后，从填充井中产生石油。 在从填充井产生的流体的水切割达到95％之后，填充井从生产者转化为喷射器，并将蒸汽注入到填充井中，并从生产井回收流体。 当在注入井和生产井之间或多或少对齐排列中使用一个填充井时，垂直一致性得到改善。 当一个或多个填充井相对于每个喷射器和生产者以偏移或不对准的布置定位时，水平和垂直平面中的一致性得到改善。 通过这种涉及填充井的多步骤过程，从注入和生产井确定的回收区域中的部分地层回收的油的量显着增加。

公开(公告)号：US4166503A

公开(公告)日：1979-09-04

申请号：US936559

申请日：1978-08-24

申请人： Wilbur L. Hall ,  Alfred Brown ,  Ralph J. Korstad

发明人： Wilbur L. Hall ,  Alfred Brown ,  Ralph J. Korstad

IPC分类号： E21B43/24 ,  E21B43/30

CPC分类号： E21B43/30 ,  E21B43/24

摘要： The vertical conformance of a steam drive process is improved and steam override reduced by penetrating the recovery zone between one injection well and one producing well, with at least one infill well which is in fluid communication with no more than the bottom half of the formation. Steam or a mixture of steam and hydrocarbon is injected into the injection well and fluids including oil are recovered from the producing well until live steam production occurs at the producing well. Petroleum production is then begun at the infill well and continued until the water cut of the fluids being produced from the infill well reaches 95 percent. The infill well is converted from a producer to an injector and hot water or cold water followed by hot water is injected into thelower portion of the formation via the infill well and fluids are produced from the production well. By this means, oil is recovered from the lower portions of the formation between the infill well and the production well. After water breakthrough occurs at the production well, steam is injected into the infill well and fluids are recovered from the production well. Hydrocarbon solvent is injected either as a slug prior to steam injection into the infill well or comingled with the steam being injected into the infill well. By this multi-step process involving the infill well, the amount of oil recovered from the portion of the formation in the recovery zone defined by the injection and production well is increased significantly.

摘要翻译： 通过穿透一个注入井和一个生产井之间的回收区，蒸汽驱动过程的垂直一致性得到改善，并且通过至少一个填充井，其不超过地层的下半部流体连通而减少蒸汽超驰。 将蒸汽或蒸汽和烃的混合物注入注入井，并且从生产井回收包括油的流体，直到在生产井中发生活蒸汽生产。 然后在填充井开始石油生产，并持续直到从填充井产生的流体的水切割达到95％。 填充井从生产者转换为注入器，然后通过填充井将热水或冷水接着热水注入地层的较低部分，并从生产井产生流体。 通过这种方式，从填充井和生产井之间的地层的下部回收油。 在生产井发生水分渗透后，将蒸汽注入到填充井中，从生产井回收流体。 在将蒸汽注入到填充井之前将烃溶剂作为块塞注入，或者将蒸汽注入到填充井中。 通过这种涉及填充井的多步骤过程，从注入和生产井定义的回收区域中形成的部分中回收的油的量显着增加。

公开(公告)号：US4166502A

公开(公告)日：1979-09-04

申请号：US936558

申请日：1978-08-24

申请人： Wilbur L. Hall ,  Alfred Brown ,  Ralph J. Korstad

发明人： Wilbur L. Hall ,  Alfred Brown ,  Ralph J. Korstad

IPC分类号： E21B43/16 ,  E21B43/24 ,  E21B43/30

CPC分类号： E21B43/30 ,  E21B43/16 ,  E21B43/24

摘要： The vertical conformance of a steam drive process is improved and steam override reduced by penetrating the zone between one injector and one producer, with an infill well located between the injector and producer which is in fluid communication with no more than the bottom half of the formation. Steam is injected into the injection well in the first phase with production of fluids from the upper 1/3 or less of the formation via the production well. A separate flow path in communication with the bottom 1/3 or less of the formation is provided in the producing well, and is used during the first phase for push-pull treatment of the formation with solvent and steam or hot water. After production via the production well is terminated, petroleum is produced via the infill well until the fluid being produced from the infill well reaches 95 percent water cut, after which the infill well is converted from a producer to an injector and hot water is injected into the lower portion of the formation via the infill well and fluids are produced from the production well. After water breakthrough at the production well, steam is injected into the infill well and fluids are recovered from the lower 1/3 of the production well.

摘要翻译： 蒸汽驱动过程的垂直一致性得到改善，并且通过穿透一个注射器和一个生产者之间的区域来减少蒸汽超驰，其中填充井位于注射器和生产者之间，该填充物位于不超过地层的下半部流体连通 。 在第一阶段将蒸汽注入到注入井中，通过生产井从地层的上1/3处生产流体。 在生产井中提供与地层底部1/3或更小连通的单独流动路径，并且在第一阶段期间用于用溶剂和蒸汽或热水推动地层的处理。 通过生产井的生产终止后，通过填充井生产石油，直到从填充井产生的流体达到95％的水分，然后将填充井从生产者转化为注入器，并将热水注入 通过填充井的地层的下部和从生产井产生的流体。 在生产井水渗透后，将蒸汽注入填料井，从生产井的1/3下回收流体。

公开(公告)号：US4124071A

公开(公告)日：1978-11-07

申请号：US810145

申请日：1977-06-27

申请人： Joseph C. Allen ,  Ralph J. Korstad

发明人： Joseph C. Allen ,  Ralph J. Korstad

IPC分类号： E21B43/18 ,  E21B43/24 ,  E21B43/243 ,  E21B43/30

CPC分类号： E21B43/24 ,  E21B43/18 ,  E21B43/243 ,  E21B43/30

摘要： Disclosed is an oil recovery method especially useful for recovering viscous oil from thick formations including tar sand deposits. The method comprises several phases which accomplish efficient recovery of the viscous oil from the formation with good vertical and horizontal sweep conformance or effectiveness. The first phase may utilize as few as two spaced apart wells, one for fluid injection and one for oil production and an oil recovery method such as injecting steam or a mixture of air and steam for low temperature, controlled oxidation is a preferred fluid for use in the first phase. After fluid breakthrough at the production well occurs, the producer of the first phase is converted to an injection well and one or more new production wells outside of the pattern swept by the injected fluid are completed in the oil formation. Thermal recovery fluids are then injected into two wells with the displacement moving in the direction of the new production wells. The oil displacement process of the second phase may be air or oxygen for high temperature in situ combustion. In thick formations, if the wells utilized in the first phase are completed low in the formation, the new production wells should be completed high in the formation to expand the recovery zone vertically to encompass more of the formation. A third phase employs a well located centrally to the four previous wells for production with air injection being into all four wells utilized in the first two cycles to further expand the three-dimensional extent of the swept zone within the pattern defined by the wells.

摘要翻译： 公开了一种特别用于从包括焦油砂沉积物在内的厚层中回收粘性油的油回收方法。 该方法包括几个阶段，其实现了具有良好垂直和水平扫掠一致性或有效性的来自地层的粘性油的有效回收。 第一阶段可以使用少至两个间隔开的孔，一个用于流体注入，一个用于油生产，并且一个油回收方法，例如喷射蒸汽或空气和蒸汽的混合物用于低温，受控氧化是优选的使用流体 在第一阶段。 在生产井发生液体渗透之后，第一阶段的生产者被转化为注入井，并且在油层中完成了被喷射流体扫过的图案之外的一个或多个新的生产井。 然后将热回收流体注入两个井，其位移沿新生产井的方向移动。 第二相的排油过程可能是空气或氧气用于高温原位燃烧。 在较厚的地层中，如果第一阶段所采用的井完井形成较低，则新生产井应在地层中高度完成，垂直扩展回收区以包围更多的地层。 第三阶段采用位于前四个井的中心位置，用于生产，空气注入在前两个循环中使用的所有四个井中，以进一步扩大由井定义的模式中的扫掠区的三维范围。

公开(公告)号：US4366863A

公开(公告)日：1983-01-04

申请号：US191975

申请日：1980-09-29

申请人： Robert J. Frick ,  Ralph J. Korstad ,  Charles J. Robinson, III

发明人： Robert J. Frick ,  Ralph J. Korstad ,  Charles J. Robinson, III

IPC分类号： E21B43/16 ,  E21B43/24 ,  E21B43/30

CPC分类号： E21B43/164 ,  E21B43/16 ,  E21B43/24 ,  E21B43/30 ,  Y02P90/70

摘要： In an enhanced oil recovery process utilizing a plurality of wells disposed in a nearly square grid wherein a plurality of these wells are injection wells which are utilized to inject a fluid into a petroleum reservoir, said fluid being then forced through the reservoir towards a plurality of production wells from which the fluid and mobilized petroleum from the reservoir are produced, an improvement is added comprising utilizing the wells at the corners of each nearly square grid as injection wells, drilling two additional wells within each grid along one diagonal and then utilizing these two additional wells as new production wells.

摘要翻译： 在利用设置在几乎正方形格栅中的多个井的增强采油过程中，其中多个这些井是用于将流体注入石油储层中的注入井，然后将所述流体强制通过储存器朝向多个 产生来自储层的流体和动员的石油的生产井，包括利用每个近似方格栅格的角落处的井作为注入井的改进，沿着一个对角线在每个网格内钻两个另外的井，然后利用这两个 新增井口作为新生产井。

公开(公告)号：US4194562A

公开(公告)日：1980-03-25

申请号：US972130

申请日：1978-12-21

申请人： Issam S. Bousaid ,  Donald L. Hoyt ,  Ralph J. Korstad

发明人： Issam S. Bousaid ,  Donald L. Hoyt ,  Ralph J. Korstad

IPC分类号： E21B43/243 ,  E21B43/30 ,  E21B43/24

CPC分类号： E21B43/30 ,  E21B43/243

摘要： An in-situ combustion method for oil recovery from a subterranean oil-bearing formation traversed by a plurality of wells comprising a series of well pattern units wherein air permeability is established sequentially in the individual well pattern units pior to the initiation of in-situ combustion, thereby resulting in an increase in overall sweep efficiency.

摘要翻译： 一种用于从由多个孔穿过的地下含油地层采油的原位燃烧方法，其包括一系列井模式单元，其中在单独的井模式单元中依次建立透气性以开始原位燃烧 ，从而导致总扫掠效率的提高。