CN210714569U - 一种大截面回浆芯轴悬挂器及井口装置 - Google Patents
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Abstract
一种大截面回浆芯轴悬挂器及井口装置，涉及井口设备技术领域，该芯轴悬挂器包括沿其轴向方向贯穿芯轴悬挂器的回浆槽。本实用新型的技术方案中，利用回浆槽作为固井时的回浆通道，摒弃了传统的利用套管头壳体的侧孔进行回浆的方式，具有截面大，成本低且不必额外增加附属设备的优点。
Description
技术领域
本实用新型涉及石油钻井设备领域，尤其涉及一种大截面回浆芯轴悬挂器及井口装置。
背景技术
石油钻井套管头的芯轴悬挂是一种常用的套管悬挂形式.其固井回浆方式为利用侧孔回浆。上述回浆方式受限于套管头壳体上的侧孔尺寸，如果需要增大侧孔的截面，则必然需要增加套管头的横向尺寸，增加了井口装置的成本。另外，上述回浆方式还要在套管头壳体的侧孔外配套阀门、由壬以及水龙带等设备，进一步增加了井口装置的成本，并延长了设备的安装时间。
实用新型内容
本实用新型的目的在于提供一种大截面回浆芯轴悬挂器及井口装置，该芯轴悬挂器的外轮廓设有回浆槽，固井时通过上述回浆槽回浆，回浆通径截面大，从而解决现有技术中存在的至少一个前述问题。
本实用新型实施例的一个方面提供了一种大截面回浆芯轴悬挂器，所述芯轴悬挂器包括沿所述其轴向方向贯穿所述芯轴悬挂器的回浆槽。
优选地，所述芯轴悬挂器的外轮廓设有第一外圆部和第二外圆部，所述第一外圆部位于所述第二外圆部的上侧，所述第一外圆部的直径大于所述第二外圆部的直径，锥面部形成于所述第一外圆部和所述第二外圆部之间，所述锥面部的上端与所述第一外圆部连接、下端与所述第二外圆部连接，所述回浆槽由上至下依次贯穿所述第一外圆部、锥面部和所述第二外圆部。
优选地，所述芯轴悬挂器的外轮廓设有径向突出部，所述锥面部形成于所述径向突出部的外圆周下侧，所述回浆槽由上至下贯穿所述径向突出部。
优选地，所述回浆槽为多个，多个所述回浆槽围绕所述芯轴悬挂器的中心轴线均匀布设。
优选地，所述回浆槽具有呈弧形状、角状或者平面状的槽底。
优选地，所述芯轴悬挂器包括同轴的第一内孔部和第二内孔部，所述第一内孔部位于所述第二内孔部的上侧，所述第一内孔部的直径大于所述第二内孔部的直径，所述第一内孔部和所述第二内孔部之间形成台阶部。
优选地，所述芯轴悬挂器的内孔包括至少一个内螺纹部。
本实用新型实施例的另一方面还提供一种井口装置，包括套管头壳体，所述井口装置还包括上述任一技术方案所述的芯轴悬挂器，所述芯轴悬挂器坐置于所述套管头壳体的内孔中。
优选地，所述套管头壳体上设有贯穿所述套管头壳体的顶丝孔，所述顶丝孔内设有顶丝，所述顶丝与所述顶丝孔螺纹且密封连接，所述顶丝的前端嵌入所述回浆槽内。
优选地，所述芯轴悬挂器与所述套管头壳体之间通过密封组件连接。
本实用新型的有益效果是：芯轴悬挂器沿其轴向方向贯穿锥面部的回浆槽，利用回浆槽作为固井时的回浆通道，摒弃了传统的利用套管头壳体的侧孔进行回浆的方式，具有截面大，成本低且不必额外增加附属设备的优点。
附图说明
图1是本实用新型第一种实施例的芯轴悬挂器的俯视图；
图2是图1中的A-A剖视图；
图3是本实用新型一种实施例的井口装置的结构示意图；
图4是本实用新型第二种实施例的芯轴悬挂器的俯视图；
图5是图4中的B-B。
具体实施方式
为了使本实用新型的目的、技术方案及优点更加清楚明白，以下结合附图，对本实用新型进行进一步详细说明。应当理解，此处所描述的具体实施方式仅仅用以解释本实用新型，并不用于限定本实用新型。
实施例1
参考图1和图2所示，一种大截面回浆芯轴悬挂器1，芯轴悬挂器1包括沿其轴向方向贯穿芯轴悬挂器1的回浆槽104，利用回浆槽104作为固井时的回浆通道，摒弃了传统的利用套管头壳体的侧孔进行回浆的方式，该大截面回浆芯轴悬挂器具有回浆截面面积大，成本低且不必额外增加附属设备的优点。
回浆槽104为多个，多个回浆槽104围绕芯轴悬挂器1的中心轴线均匀布设，多个回浆槽104进一步增大了回浆截面的面积。
回浆槽104具有呈弧形状、角状或者平面状的槽底，当然，还可以采用其他的截面形状，本实施例对此不作特别地限定。
芯轴悬挂器1的外轮廓设有第一外圆部101和第二外圆部102。使用时，第一外圆部101位于第二外圆部102的上侧。第一外圆部101的直径大于第二外圆部102的直径。锥面部103形成于第一外圆部101和第二外圆部102之间，锥面部103的上端与第一外圆部101连接、下端与第二外圆部102连接，回浆槽104由上至下依次贯穿第一外圆部101、锥面部103和第二外圆部102，形成回浆通道。
芯轴悬挂器1包括同轴的第一内孔部107和第二内孔部108，第一内孔部107位于第二内孔部108的上侧，第一内孔部107的直径大于第二内孔部108的直径，第一内孔部107和第二内孔部108之间形成台阶部109。上述第一内孔部107用于与套管接箍连接(参考图3)。
实施例2
参考图3所示，一种井口装置2，包括套管头壳体201和芯轴悬挂器1，芯轴悬挂器1坐置于所述套管头壳体201的内孔中。
芯轴悬挂器1的外轮廓设有用于与套管头壳体201连接的锥面部103。套管头壳体201的内孔设有与芯轴悬挂器1的锥面部103相匹配的锥孔部204。锥孔部204用于支撑芯轴悬挂器1及芯轴悬挂器1所悬挂的套管或者油管。
套管头壳体201的内孔中设有第三内孔部202和第四内孔部203，第三内孔部202位于第四内孔部203的上侧，第三内孔部202的直径大于第四内孔部203的直径。上述锥孔部204设于第三内孔部202和第四内孔部203之间。
套管头壳体201上设有贯穿套管头壳体201的顶丝孔，该顶丝孔内设有顶丝205，顶丝205与该顶丝孔螺纹且密封连接。顶丝205的前端嵌入回浆槽104内，用于起到防止芯轴悬挂器1转动的作用。
芯轴悬挂器1与套管头壳体201之间通过密封组件连接。本实施例中，密封组件包括上压板206、密封垫207、下压板208和多个连接件209，密封垫207位于上压板206和下压板208之间，密封垫207例如可以采用橡胶材质。连接件209从上至下依次穿过上压板206、密封垫207和下压板208，连接件209的下端与芯轴悬挂器1中的螺纹孔106连接。上述连接件209优选为螺栓。在上压板206和下压板207的挤压作用下，密封垫207径向向外突出变形，与套管头壳体201的内孔之间形成密封连接。该密封组件用于在完成固井之后，密封套管头壳体201与芯轴悬挂器之间的环形空间。需要说明的是，密封组件并不局限于上述结构，也可以采用现有技术中软金属密封等结构。
实施例3
参考图4和图5所示，本实施例与实施例1中的芯轴悬挂器1的区别在于，本实施例中的芯轴悬挂器3的外轮廓301设有径向突出部302，锥面部303形成于径向突出部302的外圆周下侧，回浆槽304贯穿径向突出部302。
在一些实施例中，芯轴悬挂器3的内孔包括第一内螺纹部307和第二内螺纹孔308。第一内螺纹部307用于与套管接箍连接，第二内螺纹部308用于悬挂油管或者套管。
在一些实施例中，径向突出部302的上侧表面设有与密封组件连接的多个螺纹孔306。
以上所述仅是本实用新型的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本实用新型原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视本实用新型的保护范围。
Claims (10)
1.一种大截面回浆芯轴悬挂器，其特征在于，所述芯轴悬挂器包括沿所述其轴向方向贯穿所述芯轴悬挂器的回浆槽。
2.根据权利要求1所述的芯轴悬挂器，其特征在于，所述芯轴悬挂器的外轮廓设有第一外圆部和第二外圆部，所述第一外圆部位于所述第二外圆部的上侧，所述第一外圆部的直径大于所述第二外圆部的直径，锥面部形成于所述第一外圆部和所述第二外圆部之间，所述锥面部的上端与所述第一外圆部连接、下端与所述第二外圆部连接，所述回浆槽由上至下依次贯穿所述第一外圆部、锥面部和所述第二外圆部。
3.根据权利要求2所述的芯轴悬挂器，其特征在于，所述芯轴悬挂器的外轮廓设有径向突出部，所述锥面部形成于所述径向突出部的外圆周下侧，所述回浆槽由上至下贯穿所述径向突出部。
4.根据权利要求1至3中任一项所述的芯轴悬挂器，其特征在于，所述回浆槽为多个，多个所述回浆槽围绕所述芯轴悬挂器的中心轴线均匀布设。
5.根据权利要求1至3中任一项所述的芯轴悬挂器，其特征在于，所述回浆槽具有呈弧形状、角状或者平面状的槽底。
6.根据权利要求1至3中任一项所述的芯轴悬挂器，其特征在于，所述芯轴悬挂器包括同轴的第一内孔部和第二内孔部，所述第一内孔部位于所述第二内孔部的上侧，所述第一内孔部的直径大于所述第二内孔部的直径，所述第一内孔部和所述第二内孔部之间形成台阶部。
7.根据权利要求1至3中任一项所述的芯轴悬挂器，其特征在于，所述芯轴悬挂器的内孔包括至少一个内螺纹部。
8.一种井口装置，包括套管头壳体，其特征在于，所述井口装置还包括权利要求1至7中任一项所述的芯轴悬挂器，所述芯轴悬挂器坐置于所述套管头壳体的内孔中。
9.根据权利要求8所述的井口装置，其特征在于，所述套管头壳体上设有贯穿所述套管头壳体的顶丝孔，所述顶丝孔内设有顶丝，所述顶丝与所述顶丝孔螺纹且密封连接，所述顶丝的前端嵌入所述回浆槽内。
10.根据权利要求8所述的井口装置，其特征在于，所述芯轴悬挂器与所述套管头壳体之间通过密封组件连接。
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