Underground torsion impact acceleration tool

Abstract

The invention discloses an underground torsion impact acceleration tool. The underground torsion impact acceleration tool comprises a connecting body, locking caps, a rotating shaft, a shell, a statorbearing, a rotor impeller, a key, a wear resistant sleeve, a flow guide bearing, a flow guide shaft, a rotating impact hammer, a valve nozzle, an impact hammer seat and an impact shell, wherein the connecting body, the shell and the impact shell are connected in sequence through threads and are outer shells of the tool; the stator bearing, the rotor impeller and the flow guide bearing are connected with the rotating shaft and are limited by the locking caps; the flow guide shaft is installed in the rotating impact hammer and is in threaded connection with the rotating shaft; and the rotatingimpact hammer and the impact hammer seat can rotate relatively and are connected in series into a whole through the flow guide shaft. According to the underground torsion impact acceleration tool, theenergy of drilling fluid can be converted into pulse torque impact, and the frequency of the pulse torque impact can be adjusted as required, so that the damage to the tool is effectively reduced, and the service life of the tool in a well is prolonged.

Description

technical field [0001] The invention relates to the technical field of well speed-increasing tools in petroleum drilling, in particular to an downhole torsion impact speed-increasing tool. Background technique [0002] With the continuous development of oil drilling, stick-slip vibration during drilling is a common and important factor that easily causes drilling tool failure and reduces the rate of penetration. This phenomenon is especially obvious when drilling deep hard formations, especially in shale gas. Development, horizontal wells, deep wells and ultra-deep wells account for an increasing proportion of oil drilling, which makes drilling more difficult and this phenomenon is becoming more and more serious. [0003] At present, the torsional impact speed-up tools that are widely used at home and abroad include: NOV’s torsion impact screw speed-up tool, and Torkbuster’s torsion impact speed-up tool. Their common feature is that they are expensive to use, and their worki...

AI Technical Summary

Problems solved by technology

[0003] At present, the torsional impact speed-up tools that are widely used at home and abroad include: NOV’s torsion impact screw speed-up tool, and Torkbuster’s torsion impact speed-up tool. Their common feature is that they are expensive to use, and their working frequency is determined by the mud displacement. It is determined that it cannot be adjusted freely. When the mud displacement increases, the impact frequency will increase, which will accelerate the wear of the equipment and further increase the cost of use.

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