Perforation strategy for heterogeneous proppant placement in hydraulic fracturing
    6.
    发明授权
    Perforation strategy for heterogeneous proppant placement in hydraulic fracturing 有权
    水力压裂中异质支撑剂放置穿孔策略

    公开(公告)号:US08540024B2

    公开(公告)日:2013-09-24

    申请号:US12667073

    申请日:2007-07-03

    IPC分类号: E21B43/267

    CPC分类号: E21B43/267 E21B43/11

    摘要: Hydraulic fracturing an individual reservoir fracturing layer of a subterranean formation to produce heterogeneous proppant placement is given in which pillars of proppant are placed such that the pillars do not extend the entire height of the fracture (for a vertical fracture) but are themselves interrupted by channels so that the channels between the pillars form pathways that lead to the wellbore. The method combines methods of introducing slugs of proppant-carrying and proppant-free fluids through multiple clusters of perforations within a single fracturing layer of rock, with methods of ensuring that the slugs exiting the individual clusters do not merge.

    摘要翻译: 给出地下地层单个储层压裂层的水力压裂以产生不均匀的支撑剂放置,其中支撑剂的支柱被放置成使得支柱不延伸断裂的整个高度(对于垂直断裂),但是本身被通道所中断 使得柱之间的通道形成通向井筒的通路。 该方法结合了通过在单个岩石压裂层内的多个穿孔簇引入支撑剂载体和不含支撑剂的流体的lug combines的方法,确保离开各个簇的s do不合并的方法。

    Method for hydraulic fracturing of subterranean formation
    7.
    发明授权
    Method for hydraulic fracturing of subterranean formation 有权
    地下水力压裂方法

    公开(公告)号:US08584755B2

    公开(公告)日:2013-11-19

    申请号:US13300297

    申请日:2011-11-18

    IPC分类号: E21B43/267

    摘要: The invention provides economically effective methods for hydraulic fracturing a subterranean formation that ensure improvement of the hydraulic fracture conductivity because of forming strong proppant clusters uniformly placed in the fracture throughout its length. One of these methods comprises: a first stage comprising injection of fracturing fluid into a borehole, the fluid containing thickeners to create a fracture in the formation; and a second stage comprising introduction of proppant into the injected fracturing fluid to prevent closure of the created fracture, and further, comprising introducing an agent into the fracturing fluid to provide formation of proppant clusters in the created fracture and channels for flowing formation fluids.

    摘要翻译: 本发明提供了经济有效的水力压裂地下地层的方法,其确保水力破坏导电性的改善,因为在整个长度上形成均匀地放置在裂缝中的强支撑剂簇。 这些方法之一包括:第一阶段包括将压裂流体注入钻孔中,所述流体含有增稠剂以在地层中产生断裂; 以及第二阶段,包括将支撑剂引入注入的压裂流体中以防止所产生的断裂的闭合,并且还包括将试剂引入压裂流体中,以在所产生的裂缝中形成支撑剂簇并形成用于流动地层流体的通道。

    METHOD FOR HYDRAULIC FRACTURING OF SUBTERRANEAN FORMATION

    公开(公告)号:US20090044945A1

    公开(公告)日:2009-02-19

    申请号:US12162462

    申请日:2006-01-27

    IPC分类号: E21B43/26

    摘要: The invention provides economically effective methods for hydraulic fracturing a subterranean formation that ensure improvement of the hydraulic fracture conductivity because of forming strong proppant clusters uniformly placed in the fracture throughout its length. One of these methods comprises: a first stage that involves injection into a borehole of fracturing fluid containing thickeners to create a fracture in the formation; and a second stage that involves periodic introduction of proppant into the injected fracturing fluid to supply the proppant into a created fracture, to form proppant clusters within the fracture to prevent fracture closure and channels for flowing formation fluids between the clusters, wherein the second stage or its sub-stages involve additional introduction of either a reinforcing or consolidation material or both, thus increasing the strength of the proppant clusters formed into the fracture fluid. Another method comprises: a first stage that involves injection of said fracturing fluid into a borehole, and a second stage that involves introduction of proppant into the injected fracturing fluid and further, involving periodic introduction of an agent into the fracturing fluid to provide formation of proppant clusters in the created fracture and channels for flowing formation fluids. Still another method comprises: a first stage that involves injection of a fracturing fluid into a borehole; a second stage that involves continuous introduction of a proppant into the injected fracturing fluid, and a third stage that involves injection of a lower-viscosity, in comparison with fracturing, fluid into the fracturing fluid, the lower-viscosity fluid, owing to the difference in viscosity compared to the fracturing fluid, penetrating into the fracturing fluid in the form of intrusions that divide the proppant into discrete clusters to form channels between them through which formation fluids to pass.

    METHOD FOR HYDRAULIC FRACTURING OF SUBTERRANEAN FORMATION
    9.
    发明申请
    METHOD FOR HYDRAULIC FRACTURING OF SUBTERRANEAN FORMATION 有权
    液压破碎方法

    公开(公告)号:US20120125618A1

    公开(公告)日:2012-05-24

    申请号:US13300297

    申请日:2011-11-18

    IPC分类号: E21B43/26

    摘要: The invention provides economically effective methods for hydraulic fracturing a subterranean formation that ensure improvement of the hydraulic fracture conductivity because of forming strong proppant clusters uniformly placed in the fracture throughout its length. One of these methods comprises: a first stage comprising injection of fracturing fluid into a borehole, the fluid containing thickeners to create a fracture in the formation; and a second stage comprising introduction of proppant into the injected fracturing fluid to prevent closure of the created fracture, and further, comprising introducing an agent into the fracturing fluid to provide formation of proppant clusters in the created fracture and channels for flowing formation fluids.

    摘要翻译: 本发明提供了经济有效的水力压裂地下地层的方法,其确保水力破坏导电性的改善,因为在整个长度上形成均匀地放置在裂缝中的强支撑剂簇。 这些方法之一包括:第一阶段包括将压裂流体注入钻孔中,所述流体含有增稠剂以在地层中产生断裂; 以及第二阶段,包括将支撑剂引入注入的压裂流体中以防止所产生的断裂的闭合,并且还包括将试剂引入压裂流体中,以在所产生的裂缝中形成支撑剂簇并形成用于流动地层流体的通道。

    Method for hydraulic fracturing of subterranean formation
    10.
    发明授权
    Method for hydraulic fracturing of subterranean formation 有权
    地下水力压裂方法

    公开(公告)号:US08061424B2

    公开(公告)日:2011-11-22

    申请号:US12162462

    申请日:2006-01-27

    IPC分类号: E21B43/267

    摘要: The invention provides economically effective methods for hydraulic fracturing a subterranean formation that ensure improvement of the hydraulic fracturcconductivity because of forming strong proppant clusters uniformly placed in the fracture throughout its length. One of these methods comprises: a first stage that involves injection into a borehole of fracturing fluid containing thickeners to create a fracture in the formation; and a second stage that involves periodic introduction of proppant into the injected fracturing fluid to supply the proppant into a created fracture, to form proppant clusters within the fracture to prevent fracture closure and channels for flowing formation fluids between the clusters, wherein the second stage or its sub-stages involve additional introduction of either a reinforcing or consolidation material or both, thus increasing the strength of the proppant clusters formed into the fracture fluid.

    摘要翻译: 本发明提供了经济有效的水力压裂地下地层的方法,其确保了水力分解导电性的改善,因为在其整个长度上形成均匀地放置在裂缝中的强支撑剂簇。 这些方法之一包括:第一阶段,其涉及向包含增稠剂的压裂流体的井眼中注入以在地层中产生断裂的第一阶段; 以及第二阶段,其涉及将支撑剂定期引入注入的压裂流体中,以将支撑剂供应到所产生的裂缝中,以在裂缝内形成支撑剂簇以防止断裂闭合,以及用于在地层之间流动地层流体的通道,其中第二阶段或 其子阶段包括另外引入增强或固结材料或两者,从而增加形成在断裂流体中的支撑剂团簇的强度。