Thermal injection and in situ combustion process for heavy oils
    1.
    发明授权
    Thermal injection and in situ combustion process for heavy oils 失效
    重油的热注射和原位燃烧过程

    公开(公告)号:US4495994A

    公开(公告)日:1985-01-29

    申请号:US463203

    申请日:1983-02-02

    IPC分类号: E21B43/24 E21B43/243

    CPC分类号: E21B43/243 E21B43/24

    摘要: A method is disclosed for recovering hydrocarbons from heavy oil and tar sand formations by a series of sequenced steps, wherein the production wells are initially steam stimulated. Thereafter, about 0.6 to about 1.2 pore volumes of steam of a relatively high steam quality are injected into the formation through the injection wells. An additional quantity of steam is then injected wherein the steam quality is decreased to a relatively low quality. Water injection and wet in situ combustion conclude the method.

    摘要翻译: 公开了一种通过一系列排序步骤从重油和焦油砂层中回收碳氢化合物的方法,其中生产井最初被蒸汽刺激。 此后,通过注入井将约0.6至约1.2孔体积的蒸汽质量较高的蒸汽注入地层。 然后注入额外量的蒸汽,其中蒸汽质量降低到相对较低的质量。 注水和湿地原位燃烧得出结论。

    High vertical conformance steam drive oil recovery method
    2.
    发明授权
    High vertical conformance steam drive oil recovery method 失效
    高垂直一致性蒸汽驱动油回收方法

    公开(公告)号:US4166504A

    公开(公告)日:1979-09-04

    申请号:US936557

    申请日:1978-08-24

    IPC分类号: C09K8/592 E21B43/16 E21B43/24

    CPC分类号: E21B43/16 C09K8/592 E21B43/24

    摘要: The vertical conformance of a steam drive process is improved and steam override reduced by penetrating the zone between one injection well and one producing well, with an infill well which is 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; then converting the infill well from a producer to an injector and injecting steam into the lower portion of the formation via the infill well and recovering fluids from the production well. Two separate communication paths are established, one between the surface and the upper half or less of the formation, and one between the bottom half or less of the formation in the producing well, or in the infill well, or injection well, or combination of two or more thereof. A fluid having lower mobility than steam is injected into the upper part of the formation via one or more of the communication means after steam override has begun, to resaturate the steam swept zone with the low mobility fluid to prevent further steam flow therethrough and force steam to flow into unswept portions of the formation.

    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入井和一个生产井之间的区域而减少蒸汽超驰,其中填充井与地层的下半部或更少流体连通,并且从地层中产生石油 在生产井发生蒸汽通道后,填充良好; 然后将填充物从生产者转化为注入器,并通过填充井将蒸汽注入地层的下部,并从生产井回收流体。 建立了两个单独的通信路径,一个位于地层的表面和上半部分或更少之间,一个位于生产井中的地层的下半部分或更少之间,或在填充井中,或注入井中,或组合 两个或更多个。 在蒸汽超驰开始之后,具有较低流动性的流体比蒸汽低的流体通过一个或多个连通装置被注入到地层的上部中,以便利用低迁移率流体使蒸汽扫过区域重新饱和,以防止进一步的蒸汽流过其中并且迫使蒸汽 流入地层的未被吹扫的部分。

    Method of treating a high temperature formation to permit the use
therein of temperature sensitive hydrophilic, viscosity increasing
polymers
    3.
    发明授权
    Method of treating a high temperature formation to permit the use therein of temperature sensitive hydrophilic, viscosity increasing polymers 失效
    处理高温地层以允许在其中使用温度敏感的亲水性,增粘聚合物的方法

    公开(公告)号:US4050513A

    公开(公告)日:1977-09-27

    申请号:US705737

    申请日:1976-07-15

    摘要: Polymer flooding is an effective means of increasing the sweep efficiency of a displacement process for recovering petroleum from a subterranean, petroleum containing formation; however, most polymers suitable for use in flooding operations hydrolyze or otherwise decompose at temperatures above about 150.degree. F to 200.degree. F, and the temperature of many subterranean petroleum-containing formations is in excess of 150.degree. F-200.degree. F. Polymers may be employed in tertiary recovery in formations whose temperatures are greater than the temperature stability limit of the polymer if the formation temperature is first reduced by introducing an aqueous fluid such as water at a temperature substantially below the temperature limit of the polymer into the formation for a period of time sufficient to reduce the formation temperature to a value at or below the temperature tolerance level of the polymer.

    摘要翻译: 聚合物淹没是提高用于从含地下石油的地层回收石油的置换过程的扫掠效率的有效手段; 然而,适用于淹水操作的大多数聚合物在高于约150°F至200°F的温度下会水解或以其它方式分解,并且许多地下含石油地层的温度超过150°F-200°F。聚合物可能 如果首先通过在基本上低于聚合物的温度极限的温度下引入含水流体如水的水溶液进入到地层的形成中,则其温度高于聚合物的温度稳定极限的地层中的三次回收, 足以将地层温度降低到等于或低于聚合物的耐温水平的值的时间段。

    Method for producing viscous hydrocarbons from discrete segments of a
subterranean layer
    4.
    发明授权
    Method for producing viscous hydrocarbons from discrete segments of a subterranean layer 失效
    从地下层的离散段生产粘性烃的方法

    公开(公告)号:US4535845A

    公开(公告)日:1985-08-20

    申请号:US528672

    申请日:1983-09-01

    IPC分类号: E21B43/24 E21B43/30

    CPC分类号: E21B43/30 E21B43/24

    摘要: Method for producing viscous hydrocarbon products such as heavy crude oil or bitumen from tar sands, which products must be thermally converted into flowable condition. A discrete vertical subsection of a productive subterranean layer is marginated by a pair of spaced apart vertical wells and a horizontal well that lies substantially horizontal to the vertical wells. Controlled, pressurized flows of a heating medium such as steam are introduced to one of the vertical wells and to the horizontal well, whereby to establish a controlled thermal front. The latter is progressively urged by the pressurized steam, through the discrete vertical subsection and toward the other of the vertical wells at which hydrocarbon emulsion is produced.

    摘要翻译: 用于从焦油砂生产粘性烃产品如重质原油或沥青的方法,该产品必须热转化成可流动状态。 生产性地下层的离散垂直分段由一对间隔开的垂直井和垂直井基本上水平的水平井边缘化。 将诸如蒸汽的加热介质的受控加压流引入垂直孔和水平井中的一个,从而建立受控的热前沿。 后者逐渐被加压蒸汽,通过离散的垂直分段和向生成烃乳液的垂直孔中的另一个排出。

    Thermal recovery method
    6.
    发明授权
    Thermal recovery method 失效
    热回收方法

    公开(公告)号:US3991828A

    公开(公告)日:1976-11-16

    申请号:US508378

    申请日:1974-09-23

    IPC分类号: E21B43/243 E21B43/24

    CPC分类号: E21B43/243

    摘要: A method for recovering low gravity viscous crude oil or bitumen from a subterranean formation comprising first injecting super heated steam, next initiating an in situ combustion by injecting air, followed by an in situ combustion wherein both super heated steam and air are injected, then simultaneously performing an in situ combustion by injecting air while also injecting water and finally injecting water.

    Thermal recovery method
    7.
    发明授权
    Thermal recovery method 失效
    热回收方法

    公开(公告)号:US4059152A

    公开(公告)日:1977-11-22

    申请号:US710077

    申请日:1976-07-30

    IPC分类号: E21B43/24

    CPC分类号: E21B43/24

    摘要: A method for recovering low gravity viscous crude oil or bitumen from a subterranean formation comprising first injecting super heated steam, next initiating an in situ combustion by injecting air, followed by an in situ combustion wherein both super heated steam and air are injected, then simultaneously performing an in situ combustion by injecting air while also injecting water and finally injecting water.

    摘要翻译: 一种从地层中回收低重力粘性原油或沥青的方法,包括首先注入超级加热蒸汽,接着通过喷射空气引发原位燃烧,接着进行原位燃烧,其中注入超加热蒸汽和空气,然后同时 通过注入空气进行原位燃烧,同时还注入水,最后注入水。