Drill rod with pad devices

Abstract

The invention provides a drill rod with pad devices. The drill rod comprises drill rod main bodies, an operating piece, the pad devices, external threads, reaming shoes, a telescopic rod, a reamer, a drill bit and drill bit locks, wherein the drill rod main bodies are arranged at the upper part of the pad device; the operating piece is arranged at the inner side of the upper part of the pad device; the pad devices are arranged outside the drill rod main bodies and the telescopic rod; the external threads are arranged at the outer layer positions of the operating piece and the pad devices; the reaming shoes are arranged at the outer side positions at the lowermost parts of the pad devices; the telescopic rod is arranged at the middle position between the two drill rod main bodies; the reamer is arranged at the upper part of the drill bit. Through the arrangement of the pad devices, the telescopic rod, the reamer and the external threads, the drill rod is convenient to process, multifunctional and high in drilling connection speed, the working safety and the working stability are further improved, the working efficiency is further improved favorably, and the maintenance cost is reduced.

Description

technical field [0001] The invention belongs to the field of drilling equipment, in particular to a drill pipe with a lining device. Background technique [0002] Currently, oil and gas wells are drilled to a certain depth with drillpipe, then run, then conventionally drilled with cement casing, and then operators can drill to greater depths. While drilling, the operator may install a liner. The liner is made from the pipe in the same manner as the casing joint. [0003] In addition, the liner is set into the well, which is secured to the lower casing adjacent to the casing. In most cases, the operator drills the well to the desired depth, inspects the drill string, and then assembles and lowers the liner into the well. [0004] A cement shoe with a check valve, usually a bushing that will be secured to the lower end of the liner. When the desired length of the liner is reached, the operator attaches a liner hanger to the upper end of the liner and attaches a liner to the...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the above-mentioned technical problems, the present invention provides a drill pipe with a liner device to solve the problems of the existing liner devices for well drilling, such as simple structure, single function, slow drilling speed, and poor work safety and stability. , high maintenance cost and short service life

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