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An umbrella type steel wire rope pushing device

A technology of pushing device and wire rope, applied in wellbore/well components, earth-moving drilling, etc., can solve the problem of low recovery success rate of drilling tools, and achieve the effect of strong adaptability

Inactive Publication Date: 2018-02-23
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 shortcomings of the low success rate of drilling tool recovery in the existing drilling tool recoverable casing drilling process, an umbrella type wire rope pushing device is specially provided

Method used

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  • An umbrella type steel wire rope pushing device
  • An umbrella type steel wire rope pushing device

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Embodiment Construction

[0016] 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 , figure 2 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.

[0017] A step is set at the middle position of the mandrel 4, and the mounting ring 9 is set at the step position of the mandrel 4 and is threadedly connected. The lock nut 11 is installed on the outside of the mounting ring 9; It is used to connect the upper tool; the lower end of the mandrel 4 is equipped with a sliding sleeve 15, and the sliding sleeve 15 is sleeved on the outside of the mandrel 4. A limit ring 14 is installed near the step surface position at the lower end of the mandrel 4, and is fixed with screws between the limit ring 14 and...

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Abstract

The invention relates to an umbrella-type steel wire rope pushing device which is mainly applied to drilling tool fishing operation in casing pipe drilling and well bottom fallen tool fishing in oil pipes. According to the technical scheme, an upper connector is installed at the upper end of a mandrel, a sliding sleeve is installed at the lower end of the mandrel, one end of each upper connecting rod is hinged to the upper connector, the other end of each upper connecting rod is hinged to a connecting block, one end of each lower connecting rod is hinged to the sliding sleeve, the other end of each lower connecting rod is hinged to the corresponding connecting block, an installation ring is arranged in the middle of the mandrel, the installation ring is connected with the sliding sleeve through extension springs, and a flow plug is arranged between the upper connecting rods. The umbrella-type steel wire rope pushing device has an automatic diameter-changing function, is high in adaptability to casing pipe deformation, can adjust traction by adjusting the flow velocity of a medium in a casing pipe and can be applied to casing pipe drilling operation of horizontal wells and large-displacement wells.

Description

technical field [0001] The invention relates to an umbrella-type wire rope pushing device, which is specifically applied to the wire rope operation of oil and gas wells, especially the drilling tool fishing operation 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 conventi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B31/12
CPCE21B31/12
Inventor 王亚雄李成兵何虹钢
Owner SOUTHWEST PETROLEUM UNIV
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