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A logging cable rotary sealing device and its operating method

A rotary sealing and cable technology, applied in the field of oil exploration, can solve problems such as breaking strength and twisting of logging cables

Active Publication Date: 2021-04-30
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a logging cable rotary sealing device and its operation method in order to solve the problem of breaking and twisting of the logging cable and to solve the problem of bypass short joints by adding steel balls. Well Logging Cable Channel Sealing Problem

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  • A logging cable rotary sealing device and its operating method
  • A logging cable rotary sealing device and its operating method
  • A logging cable rotary sealing device and its operating method

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Embodiment Construction

[0038] In describing the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", " The orientation or positional relationship indicated by "inner", "outer", "one side", "one end", "one side" etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, and It is not to indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, or operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0039] In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "con...

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Abstract

The invention discloses a logging cable rotary sealing device and an operation method thereof. It is connected with the rotating shell, and the spherical annular guide rail is set on one side of the rotating shell and between the split bolt and the compression screw. The logging cable runs through the split bolt, the spherical annular guide rail, the compression screw, the rotating shell and the spherical ring in sequence. The guide rail is set, and steel balls are set in the rotating housing. With the cooperation of the sealant block and the steel balls, the sealing of the logging cable and the empty cable channel is completed. The invention has simple structure and reliable connection, solves the sealing problem of the empty cable channel of the bypass short section, and reduces the failure rate of the cable.

Description

technical field [0001] The invention belongs to the technical field of petroleum exploration, and in particular relates to a logging cable rotary sealing device and an operating method thereof. Background technique [0002] The bypass nipple is one of the important tools for horizontal well logging tools. The bypass nipple is equipped with a logging cable side entry channel and a sealing assembly. The side-entry channel of the well cable is connected to the docking gun, and then the bypass sub-section is connected in series with the drilling tool. After the horizontal well tool is docked, the side-entry channel of the logging cable is sealed to prevent the drilling tool below the bypass sub-section The inner drilling fluid overflows along the side entry channel of the logging cable. [0003] At present, the bypass sub-joints used in most domestic oil fields are equipped with sealing devices, but in the logging construction of horizontal wells, it is often found that the log...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B33/12E21B23/01
CPCE21B23/01E21B33/1208
Inventor 刘向汉刘江龙杜拥军曾嵛俞建国马鑫江龙飞吴凤武王广斓李小文王磊胡靓兰积恒
Owner BC P INC CHINA NAT PETROLEUM CORP
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