Method of fracturing multiple zones within a well using propellant pre-fracturing

    公开(公告)号:US09915137B2

    公开(公告)日:2018-03-13

    申请号:US14708822

    申请日:2015-05-11

    CPC classification number: E21B43/26 E21B33/124 E21B43/116 E21B43/14 E21B43/267

    Abstract: A method of fracturing multiple zones within a wellbore formed in a subterranean formation is carried out by forming flow-through passages in two or more zones within the wellbore that are spaced apart from each other along the wellbore. The flow-through passages are arranged into clusters, where the directions of all flow-through passages, which belong to the same cluster, are aligned within a single plane (cluster plane). At least one cluster of flow-through passages is formed in each zone. The clusters within each zone have characteristics different from those of other zones provided by orienting the cluster planes at different angles relative to principal in-situ stresses and by placing them into different locations along the wellbore in each of the two or more zones. A propellant pre-fracturing treatment is then performed in the two or more zones to create initial fractures (pre-fractures) in each of the two or more zones. The fracturing fluid in the fracturing treatment is provided at a pressure that is above the pre-fracture propagation pressure of one of the two or more zones to facilitate fracturing of said one of the two or more zones. The pressure of the fracturing fluid is below the pre-fracture propagation pressure of any other non-treated zones of the two or more zones. The isolating of the treated zone is then performed. The fracturing process is then repeated for at least one or more non-treated zones of the two or more zones.

    WELL TREATMENT
    15.
    发明申请
    WELL TREATMENT 审中-公开
    井治疗

    公开(公告)号:US20160168451A1

    公开(公告)日:2016-06-16

    申请号:US14891172

    申请日:2014-08-15

    CPC classification number: C09K8/80 C09K8/62 E21B43/26 E21B43/267

    Abstract: A method for treating a subterranean formation penetrated by a wellbore, comprising: providing a treatment slurry comprising a carrying fluid, a solid particulate and an anchorant; injecting the treatment slurry into a fracture to form a substantially uniformly distributed mixture of the solid particulate and the anchorant; and transforming the substantially uniform mixture into areas that are rich in solid particulate and areas that are substantially free of solid particulate, wherein the solid particulate and the anchorant have substantially dissimilar velocities in the fracture and wherein said transforming results from said substantially dissimilar velocities is provided.

    Abstract translation: 一种用于处理由井眼渗透的地层的方法,包括:提供包含载体流体,固体颗粒和锚固剂的处理浆料; 将处理浆料注入裂缝中以形成固体颗粒和固定剂的基本均匀分布的混合物; 并且将基本上均匀的混合物转化为富含固体颗粒的区域和基本上不含固体颗粒的区域,其中固体颗粒和固定剂在裂缝中具有基本上不同的速度,并且其中提供了来自所述基本相异速度的所述变换结果 。

    COMPOUND CLUSTER PLACEMENT IN FRACTURES
    16.
    发明申请
    COMPOUND CLUSTER PLACEMENT IN FRACTURES 审中-公开
    化合物聚合物在裂缝中的放置

    公开(公告)号:US20150369029A1

    公开(公告)日:2015-12-24

    申请号:US14313958

    申请日:2014-06-24

    CPC classification number: E21B43/267 C09K8/703 C09K8/80

    Abstract: Proppant cluster placement in fractures with foamed carrying fluid. A formation treatment method includes injecting a treatment fluid stage, having a particulate-containing substage containing a self-agglomerating solid composition and a foamed carrying fluid, above a fracturing pressure, and alternating pulses of a pumping parameter to transform the self-agglomerating composition into a channelized solids pack, and closing the fracture. Also disclosed are methods of modeling a fracture treatment interval for such a method, and methods of treatment and systems to treat with such a treatment fluid stage, wherein solid particulate-rich substages are larger than the solid particulate-lean substages to form particulate-rich island regions, an interconnected network of open channel regions between the island regions and the island regions are channelized to form particulate clusters within the island regions separated from adjacent particulate clusters by open voids in the island regions.

    Abstract translation: 支架簇放置在具有泡沫携带液体的裂缝中。 一种地层处理方法包括在压裂压力以上喷射具有含有自凝集固体组合物和发泡载体的颗粒状分层的处理流体级,以及泵送参数的交替脉冲以将自凝集组合物转化为 通道化固体包装,并关闭骨折。 还公开了对这种方法的断裂处理间隔进行建模的方法,以及用这种处理流体阶段处理的处理方法和系统,其中固体颗粒富集的阶段大于固体颗粒状贫的阶段,以形成富含微粒的 在岛状区域之间,岛状区域和岛状区域之间的开放通道区域的互连网络被通道化,以在岛状区域内通过开放空隙与邻近的微粒簇分离的岛状区域中形成微粒簇。

    GAS FRACTURING METHOD AND SYSTEM
    17.
    发明申请
    GAS FRACTURING METHOD AND SYSTEM 审中-公开
    气体破碎方法与系统

    公开(公告)号:US20150211343A1

    公开(公告)日:2015-07-30

    申请号:US14163366

    申请日:2014-01-24

    Abstract: Gas fracturing methods and systems utilizing a gas treatment fluid, which may contain a dispersed phase of fluid loss control agent particles. Also, treatment fluids suitable for use in the methods and systems are disclosed.

    Abstract translation: 使用气体处理流体的气体压裂方法和系统,其可以含有流体损失控制剂颗粒的分散相。 此外,公开了适用于该方法和系统的处理流体。

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