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A wire rope feeding device with a leather bowl

A technology of feeding device and steel wire rope, which is applied in the direction of wellbore/well components, earthwork drilling, etc., can solve the problem of low success rate of drilling tool recovery, and achieve the effect of strong deformation adaptability and large driving force

Inactive Publication Date: 2018-08-17
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Purpose of the present invention: In order to overcome the shortcoming of the low success rate of drilling tool recovery in the existing drill tool recoverable casing drilling process, a wire rope feeding device with a leather cup is specially provided

Method used

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  • A wire rope feeding device with a leather bowl
  • A wire rope feeding device with a leather bowl
  • A wire rope feeding device with a leather bowl

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Embodiment Construction

[0017] The present invention is not limited by the following implementation examples, and specific implementation manners can be determined according to the technical solutions of the present invention and actual conditions. Combine below Figure 1~3 The present invention is described below. The positional relationship of up, down, left, right, etc. is based on the attached figure 1 determined by the layout direction.

[0018] The sliding sleeve 8 is installed outside the mandrel 6, the upper end of the sliding sleeve 8 is provided with a threaded joint for connecting the wire rope connector or the upper tool, the sliding sleeve 8 is provided with a radial through hole near the threaded joint, and the middle position of the sliding sleeve 8 is provided with a radial through hole. A step is arranged in the sliding sleeve 8 , and a compression spring 9 is installed in the annular space between the sliding sleeve 8 and the mandrel 6 . The mandrel 6 is provided with a step near...

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Abstract

The invention relates to a steel wire rope feeding device with a leather bowl. The steel wire rope feeding device is mainly applied to drilling tool salvaging operation in casing drilling. According to the technical scheme, a sliding sleeve is installed at the upper end of a mandrel; a compression spring is arranged between the mandrel and the sliding sleeve; the lower end of the mandrel is connected with a lower connector; the center of the leather bowl is clamped with a lower retaining ring at the lower end of the mandrel through the lower connector; and one ends of supporting rods are hinged to the sliding sleeve, and the other ends of the supporting rods are hinged to supporting lugs at the edge of the leather bowl. The steel wire rope feeding device with the leather bowl has an automatic diameter changing function; the adaptability to deformation of a casing is high; the leather bowl blocks the casing during well descending; a medium in the casing drives the steel wire rope feeding device to be descended into a well; and the steel wire rope feeding device can adapt to casing drilling of a horizontal well and a large-slope well.

Description

technical field [0001] The invention relates to a wire rope feeding device with a leather cup, which is specifically applied to wire rope operations in oil and gas wells, especially drilling tool fishing operations in casing drilling. Background technique [0002] The casing drilling system refers to a drilling system that uses ordinary casing as the drill string. The casing not only transmits mechanical energy (torque) but also transmits liquid energy to the drill bit. It can run casing while drilling, saving a lot of well construction costs. It has the advantages of reducing tripping times, shortening tripping time, saving costs, and reducing downhole accidents. [0003] At present, retrievable casing drilling tools are the most widely used, and this process uses wire rope to salvage the lower part of the casing. Wire rope hoisting has the advantages of high efficiency and rapidity, and is widely used in workover, salvage, logging and other operations. In the convention...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B31/12
CPCE21B31/12
Inventor 张梁邓严刘稳邓兰何虹钢
Owner SOUTHWEST PETROLEUM UNIV
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