High-frequency pulsed jet flow resonance well drilling device and well drilling method thereof

Abstract

The invention relates to a high-frequency pulsed jet flow resonance well drilling device and a well drilling method thereof. The high-frequency pulsed jet flow resonance well drilling device comprises an outer steel jacket, wherein one end of the outer steel jacket is connected with an upper adapter; the other end of the outer steel jacket is connected with a lower adapter; the upper adapter is connected with a drill collar by a thread; the lower adapter is connected with a drill by the thread; a small hydrogenerator, a density logger, an acoustic logger, a controller and an ultrasonic transducer are successively installed from top to bottom in the outer steel jacket; the small hydrogenerator is composed of a blade and a generator; the blade is installed above the generator; the ultrasonic transducer comprises a fixed end, a transducer and an amplitude transformer; the position on the outer steel jacket, which corresponds to the amplitude transformer, is provided with a necking section; the density logger, the acoustic logger and the controller are mutually separated by cushion blocks; and after the density logger, the acoustic logger and the controller are connected, the inner cavities of the density logger, the acoustic logger and the controller are communicated to form a well drilling fluid path. According to the high-frequency pulsed jet flow resonance well drilling device, the mechanical drilling speed is drastically improved, the improvement amplitude is 1-2 times, and the well drilling cost is effectively lowered.

Description

1. Technical field:

[0001] The invention relates to the field of oil drilling and rock breaking technology, which is mainly used in the fields of petroleum engineering, mining engineering, geotechnical engineering, etc. It is a drilling technology that uses resonance to quickly break rocks in deep formations and increase the mechanical speed of penetration. Specifically, it is a high-frequency pulse Jet resonance drilling device and drilling method thereof. 2. Background technology:

[0002] With the rapid development of my country's national economy, the country's demand for oil and gas resources is increasing year by year. The intensity of oil and gas exploration continues to increase, and the difficulty of mining is increasing. Well depth changes from shallow to deep and ultra-deep. The difficulties of high-efficiency drilling and rock-breaking technology in deep formations mainly include: first, the proportion of complex formations and difficult-to-drill formations is ...

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