Simultaneous underlying device and underlying method for drilling multi-way sleeves

Abstract

The invention discloses a simultaneous underlying device and underlying method for drilling multi-way sleeves. The simultaneous underlying device comprises a support surface, wherein a drilling toweris fixed to the upper end of the support surface, a hanging scaffold is arranged on the drilling tower, a moving crown block is fixedly connected to the lower end of the hanging scaffold, a pluralityof upper pipe sleeves are arranged below the moving crown block, lower pipe sleeves are respectively are welded to the lower ends of the plurality of upper pipe sleeves, fixed clamping pieces are respectively arranged in positions, which are close to the upper ends, of the outer sides of the plurality of upper pipe sleeves and the lower pipe sleeves, and safety clamping pieces are respectively arranged in positions, which are located above the fixed clamping pieces, of the outer sides of the plurality of upper pipe sleeves and the lower pipe sleeves. According to the simultaneous underlying device, a bearing chassis, the fixed clamping pieces, the safety clamping pieces and isolation steel plates are designed, the manufacturing process and the structure are simple, a lifting device on thedrilling tower is adopted, the isolation steel plates are used for reinforcing among the moving crown block, the hanging scaffold and the lower sleeves, the sleeves are sent through the fixed clampingpieces and the safety clamping pieces, the site requirement is met, the purpose that multiple ways of sleeves are arranged in a drilled hole at the same time can be achieved, and the use is convenient and reliable.

Description

technical field [0001] The invention relates to the technical field of laying multiple casings for exploration drilling, in particular to a device for simultaneously laying multiple casings for drilling. Background technique [0002] In drilling construction, according to the technical requirements, it is necessary to place multiple casings in the borehole at the same time. Each casing is used for different purposes, such as casings are inserted separately. In the process of running into other casings, because the casings that have been run in are in the borehole, the casings that are run in will scrape against the casing and the well wall and rotate by themselves, so they cannot go down to the predetermined position. When the casing is run in, threaded connection or welding is generally used. The lifting method is clamped with a threaded head or a splint, and pulled with a wire rope. Contents of the invention [0003] The purpose of the present invention is to solve the...

AI Technical Summary

Problems solved by technology

[0002] In drilling construction, according to the technical requirements, it is necessary to place multiple casings in the borehole at the same time. Each casing is used for different purposes, such as casings are inserted separately. In the process of running other casings, since the casings have already been run in the borehole, the casings run in again will scrape against the casing and the well wall and rotate by themselves, and cannot be run to the predetermined position.

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