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    Cable head for petroleum logging
    1.
    发明授权
    Cable head for petroleum logging 有权
    石油采伐电缆头

    公开(公告)号：US08607856B2

    公开(公告)日：2013-12-17

    申请号：US13203802

    申请日：2010-03-11

    申请人： Guoan Zhang ,  Jiafu Zhang ,  Jianlong Cheng

    发明人： Guoan Zhang ,  Jiafu Zhang ,  Jianlong Cheng

    IPC分类号： E21B17/10

    CPC分类号： E21B17/023 ,  H01R13/533

    摘要： A cable head for petroleum logging includes a first connector and a second connector; there is a tension rod between the first connector and the second connector; a first piston, a second piston and a third piston are successively provided on the upper part, the middle part and the lower part of the first connector; the diameter of the second piston is greater than the diameters of the first and third piston respectively; the first and second piston are sealed and mounted inside a first cylinder; the third piston is sealed and mounted inside a second cylinder; the lower part of the second cylinder is fixedly connected with the second connector; a balance cavity is formed between the lower end face of the second piston and the upper end face of the second cylinder when the lower end face of the first cylinder is contacted with the upper end face of second cylinder; the balance cavity communicates with the external by a passage on the first or second cylinder; an axial projected area of the lower end face of the second piston is equal to a cross section area of the first piston. When the cable head is stuck in the well in use, the logging cable can be disconnected by breaking the tension rod, thus it is no need to overcome the pressure of fluid in the deep well.

    摘要翻译： 用于石油测井的电缆头包括第一连接器和第二连接器; 在第一连接器和第二连接器之间存在张力杆; 第一活塞，第二活塞和第三活塞依次设置在第一连接器的上部，中部和下部; 第二活塞的直径分别大于第一和第三活塞的直径; 第一和第二活塞被密封并安装在第一气缸内; 第三活塞被密封并安装在第二气缸内; 第二气缸的下部与第二连接器固定连接; 当第一气缸的下端面与第二气缸的上端面接触时，在第二活塞的下端面与第二气缸的上端面之间形成有平衡腔; 平衡腔通过第一或第二气缸上的通道与外部连通; 第二活塞的下端面的轴向投影面积等于第一活塞的截面面积。 当电缆头卡在使用中的井口时，可以通过断裂张力杆来断开测井电缆，因此无需克服深井中的液体压力。

    CABLE HEAD FOR PETROLEUM LOGGING
    2.
    发明申请
    CABLE HEAD FOR PETROLEUM LOGGING 有权
    石油记录用电缆头

    公开(公告)号：US20110318088A1

    公开(公告)日：2011-12-29

    申请号：US13203802

    申请日：2010-03-11

    申请人： Guoan Zhang ,  Jiafu Zhang ,  Jianlong Cheng

    发明人： Guoan Zhang ,  Jiafu Zhang ,  Jianlong Cheng

    IPC分类号： E21B17/02 ,  F16P5/00

    CPC分类号： E21B17/023 ,  H01R13/533

    摘要： A cable head for petroleum logging includes a first connector and a second connector; there is a tension rod between the first connector and the second connector; a first piston, a second piston and a third piston are successively provided on the upper part, the middle part and the lower part of the first connector; the diameter of the second piston is greater than the diameters of the first and third piston respectively; the first and second piston are sealed and mounted inside a first cylinder; the third piston is sealed and mounted inside a second cylinder; the lower part of the second cylinder is fixedly connected with the second connector; a balance cavity is formed between the lower end face of the second piston and the upper end face of the second cylinder when the lower end face of the first cylinder is contacted with the upper end face of second cylinder; the balance cavity communicates with the external by a passage on the first or second cylinder; an axial projected area of the lower end face of the second piston is equal to a cross section area of the first piston. When the cable head is stuck in the well in use, the logging cable can be disconnected by breaking the tension rod, thus it is no need to overcome the pressure of fluid in the deep well.

    摘要翻译： 用于石油测井的电缆头包括第一连接器和第二连接器; 在第一连接器和第二连接器之间存在张力杆; 第一活塞，第二活塞和第三活塞依次设置在第一连接器的上部，中部和下部; 第二活塞的直径分别大于第一和第三活塞的直径; 第一和第二活塞被密封并安装在第一气缸内; 第三活塞被密封并安装在第二气缸内; 第二气缸的下部与第二连接器固定连接; 当第一气缸的下端面与第二气缸的上端面接触时，在第二活塞的下端面与第二气缸的上端面之间形成有平衡腔; 平衡腔通过第一或第二气缸上的通道与外部连通; 第二活塞的下端面的轴向投影面积等于第一活塞的截面面积。 当电缆头卡在使用中的井口时，可以通过断裂张力杆来断开测井电缆，因此无需克服深井中的液体压力。

    Combined fracturing and perforating method and device for oil and gas well
    3.
    发明授权
    Combined fracturing and perforating method and device for oil and gas well 有权
    油气井综合压裂和穿孔方法及装置

    公开(公告)号：US08960289B2

    公开(公告)日：2015-02-24

    申请号：US13521522

    申请日：2010-11-10

    申请人： Guoan Zhang ,  Jianlong Cheng ,  Xianhong Sun

    发明人： Guoan Zhang ,  Jianlong Cheng ,  Xianhong Sun

    IPC分类号： E21B43/11 ,  E21B43/263 ,  E21B43/117 ,  F42B1/02 ,  F42D3/04

    CPC分类号： E21B43/263 ,  E21B43/117 ,  F42B1/02 ,  F42D3/04

    摘要： A combined fracturing and perforating method and device for oil and gas well are disclosed. The method utilizes an explosion of a perforating charge (5) in a combined fracturing perforator to ignite primary gunpowder in the perforator, and burning of the primary gunpowder ignites secondary gunpowder in the perforator. The body of the perforating gun in the combined fracturing and perforating device is provided with pressure releasing hole (8) which is directly facing the jet direction of said perforating charge, and sealing sheet (9) is arranged on said pressure releasing hole (8). Inner gunpowder box (6), which contains the primary gunpowder, and outer gunpowder box (7), which contains the secondary gunpowder, are mounted on the cylindrical charge frame (4).

    摘要翻译： 公开了油气井组合压裂和穿孔方法及装置。 该方法利用组合压裂穿孔机中的穿孔装置（5）的爆炸点燃穿孔机中的主要火药，并且主火药的燃烧点燃穿孔机中的次级火药。 组合式压裂穿孔装置中的射孔枪体设有直接面向射孔喷射方向的压力释放孔（8），密封片（9）设置在所述压力释放孔（8）上， 。 包含主火药​​的内火药盒（6）和包含次级火药的外火药盒（7）安装在圆柱形充电架（4）上。

    COMBINED FRACTURING AND PERFORATING METHOD AND DEVICE FOR OIL AND GAS WELL
    4.
    发明申请
    COMBINED FRACTURING AND PERFORATING METHOD AND DEVICE FOR OIL AND GAS WELL 有权
    组合破碎和执行方法和油气装置

    公开(公告)号：US20130098681A1

    公开(公告)日：2013-04-25

    申请号：US13521522

    申请日：2010-11-10

    申请人： Guoan Zhang ,  Jianlong Cheng ,  Xianhong Sun

    发明人： Guoan Zhang ,  Jianlong Cheng ,  Xianhong Sun

    IPC分类号： E21B43/116

    CPC分类号： E21B43/263 ,  E21B43/117 ,  F42B1/02 ,  F42D3/04

    摘要： A combined fracturing and perforating method and device for oil and gas well are disclosed. The method utilizes an explosion of a perforating charge (5) in a combined fracturing perforator to ignite primary gunpowder in the perforator, and burning of the primary gunpowder ignites secondary gunpowder in the perforator. The body of the perforating gun in the combined fracturing and perforating device is provided with pressure releasing hole (8) which is directly facing the jet direction of said perforating charge, and sealing sheet (9) is arranged on said pressure releasing hole (8). Inner gunpowder box (6), which contains the primary gunpowder, and outer gunpowder box (7), which contains the secondary gunpowder, are mounted on the cylindrical charge frame (4).

    摘要翻译： 公开了油气井组合压裂和穿孔方法及装置。 该方法利用组合压裂穿孔机中的穿孔装置（5）的爆炸点燃穿孔机中的主要火药，并且主火药的燃烧点燃穿孔机中的次级火药。 组合式压裂穿孔装置中的射孔枪体设有直接面向射孔喷射方向的压力释放孔（8），密封片（9）设置在所述压力释放孔（8）上， 。 包含主火药​​的内火药盒（6）和包含次级火药的外火药盒（7）安装在圆柱形充电架（4）上。