Multifunctional Drilling String Joints

Abstract

The invention relates to a multi-functional drilling string joint, which includes: an upper joint, the outer wall of the upper joint has several joint protrusions, each joint protrusion includes an anti-reversal protrusion and a load key, the A slot is formed between the anti-reversal protrusion and the load key, and the anti-reverse protrusion is connected to the bottom end of the load key and forms an integral structure; the inner wall of the lower joint has several hanging protrusions, and any An inner slot is formed between two adjacent suspension projections, there is a rotation space between the lower part of the suspension projection and the inner cavity of the lower joint, and the joint projection of the upper joint can rotate and lift up in the rotation space, The suspension protrusion can be snapped into the card slot, the anti-reverse protrusion and the load key can be closely attached to the suspension protrusion and prevent the suspension protrusion from rotating; Shock and anti-jamming and other functions.

Description

technical field [0001] The invention relates to a drill joint, in particular to a drill joint in the field of petrochemical equipment. The joint has fast, high-pressure, shock-absorbing and anti-jamming functions, which can promote the improvement of tripping speed, promote safe production, reduce The damage to drill bits and drilling tools caused by drill jumping can prolong the maintenance cycle of drilling tools, increase the service life of drilling tools, and reduce the investment of drilling tools. It can be used for "ultra-high pressure drilling" or conventional pump pressure drilling. A revolution in connection methods. Background technique [0002] The existing drill tool joint is a single tool used for the single connection of the drilling tool, which can be used to connect the length and circulate the fluid, so that the wellbore can be extended to the required length. The connection method depends on the thread, and the seal depends on the thread and two The step...

AI Technical Summary

Problems solved by technology

[0003] However, its disadvantages are: the thread connection speed is slow, and the unloading speed is also slow, and it needs to be rotated 1800 degrees; the thread tightening requires a large torque; and the sealing ability is weak, and puncture leakage is often found, which is more likely to occur under ultra-high pressure conditions; Time-consuming and labor-intensive drilling

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