Rotary impact type drilling equipment

Abstract

The invention discloses rotary impact type drilling equipment. An energy-storage spring steel disc is arranged between a driving rod and a rotary impact rod. A direct driving motor drives a driving cam cylinder to rotate so as to make the driving rod reciprocate up and down, and accordingly energy storage of the energy-storage spring steel disc is achieved. A high-frequency rotary oscillation impactor is fixedly arranged on the rotary impact rod. Impact type rotary well drilling is achieved through the combined impact and rotational movement action of the energy-storage spring steel disc and the high-frequency rotary oscillation impactor. According to the rotary impact type drilling equipment, the energy-storage spring steel disc can well store energy and release the energy to the high-frequency rotary oscillation impactor, and thus the impact effect of the high-frequency rotary oscillation impactor is improved; by the adoption of the direct driving motor, energy consumption is reduced, the size of the drilling equipment can be effectively reduced, and the drilling equipment can be installed and fixed conveniently; and the driving cam cylinder is used for achieving energy storage of the energy-storage spring steel disc, the energy-storage frequency of the energy-storage spring steel disc can be designed to achieve opposite resonance of the driving cam cylinder and the high-frequency rotary oscillation impactor, and the impact effect is improved to the greatest extent.

Description

Technical field [0001] The invention relates to a rotary percussion type drilling equipment, belonging to the technical field of drilling equipment. Background technique [0002] As the country attaches great importance to the coalbed methane industry, the exploration and development of coalbed methane is developing at an unprecedented speed. However, the past two decades of practice tell us that the results of exploration and development of coalbed methane are not ideal. In addition to objective geological factors, the reason is largely due to low drilling efficiency and high cost. Therefore, a drilling technology with higher efficiency and lower cost than conventional rotary drilling—percussion rotary drilling is applied in the exploration and development of coalbed methane. [0003] In recent years, the percussive rotary drilling technology has been gradually applied to drilling engineering. Using this technology can solve the practical problems of low drilling speed in hard ro...

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Problems solved by technology

[0004] However, the structure of the current rotary percussion drilling equipment is relatively complicated, and the manufacturing cost is relatively high. Moreover, due to the limitation of the power of the percussion device, if the drilling effect is only enhanced by increasing the power of the percussion device, it will not only increase exponentially. manufacturing cost, and it is easy to increase the volume of drilling equipment, which is not easy to install and apply. Therefore, how to assist the equipment to enhance the impact effect of the impactor is very important for improving the drilling efficiency of rotary percussion drilling equipment and reducing manufacturing costs. the role of

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