Hydraulic oscillation axial impactor

Abstract

The invention provides a hydraulic oscillation axial impactor. The hydraulic oscillation axial impactor comprises a housing, an impact joint arranged at the lower end of the housing, a rotating body arranged in the housing, a spoiler, a partition plate, and a hydraulic hammer, wherein the rotating body comprises a rotating shaft provided with an axial flow channel and a plurality of spiral bladesarranged on the outer wall of the rotating shaft, the side wall of the rotating shaft is provided with a guide hole and a drain hole which communicate with the axial flow channel, and the outer wall of the rotating shaft is provided with a track key; the spoiler and the partition plate sleeve the rotating shaft and are provided with a plurality of first and second fan-shaped fins arranged at intervals in the circumferential direction respectively, and first and second fan-shaped openings are formed between the adjacent first and second fan-shaped fins respectively; and the hydraulic chamber sleeves the rotating shaft, the inner wall of the hydraulic hammer is provided with a track groove matched with the track key, and a hydraulic pressure cavity communicating with the axial flow channel through the drain hole is defined between the upper end of the impact joint, the lower end of the hydraulic hammer, the inner wall of the housing and the outer wall of the rotating shaft. The hydraulicoscillation axial impactor can fully utilize hydraulic energy to make a drill generate longitudinal vibration during rotary working, and a pulse jet cavitation effect is achieved at the same time.

Description

technical field [0001] The invention relates to the field of oil drilling downhole tools, in particular to a hydraulic vibration axial impactor. Background technique [0002] With the continuous improvement of oil exploration technology, the development of oil continues to expand from shallow to deep. As the drilling depth continues to increase, the formations encountered become more and more complex, and the rock hardness is also increasing. The torque provided by the rotary table is continuously reduced during the underground transmission process, and the holding effect of the liquid column on the bottom of the well is obvious. These problems slow down the drilling speed, lengthen the drilling cycle, increase the cost of oil extraction, and restrict the process of oil and gas field development. Therefore, improving the drilling speed of deep wells and ultra-deep wells has become the top priority of oil exploration and development. [0003] At present, the main means to i...

AI Technical Summary

Problems solved by technology

These impactors have many weak points due to the use of a large number of connections and moving parts, and are prone to damage during the actual drilling process

At the same time, such devices often use buffer energy storage devices such as springs. During the process of energy storage and release of the spring, a part of the energy is used for its own deformation, resulting in a waste of energy. Therefore, these energy storage devices reduce the impact of the impactor. Work, which affects the impact performance of the impactor

Images