Hybrid pdc drill bit based on jet technology

Abstract

The invention relates to a hybrid power PDC drill bit based on jet flow technology, which comprises a drill bit body, one end of the drill bit body is provided with a plurality of drilling fluid nozzles, one end of the drill bit body is provided with at least two drill bit cutter wings, the drill bit cutter wings can rotate in the same direction as the bit body for cutting a rock layer. At least two jet flow power cutter heads are arranged at one end of the drill bit body, the jet flow cutter heads and the drill bit cutter wings are evenly and alternately arranged in the circumferential direction, and a plurality of cutter head cutter wings are evenly arranged on the jet flow power cutter heads at intervals in the circumferential direction, and jet flow nozzles are respectively disposed onone side of each cutter head cutter wing. The jet flow power cutter heads can rotate in the same direction as the drill bit body and can reversely rotate under the driving of a high-pressure jet flow; each cutter head wing can impact the grinding rock formation for a second time and the high pressure jet flow generated by the jet flow nozzle can spray the fracture the rock formation. The drill bit can avhieve mechanical and hydraulic cross rock breaking under the complex and changeable stratum, improves the adaptability of the drill bit to various formations, improves the rock breaking efficiency, shortens the drilling period, reduces the drilling cost and improves the exploration and development benefits.

Description

technical field [0001] The invention relates to the technical field of drilling, in particular to a hybrid PDC drill bit based on jet technology. Background technique [0002] With the intensification of oil exploration and development, the drilling workload in various complex geological formations shows an increasing trend year by year. However, many problems have been encountered in the process of drilling complex and changeable rock formations. Due to the changeable complexity of the rock formations, the drill bits for specific rock formations cannot adapt to the changeable rock formations well during the drilling process, resulting in poor rock breaking effect. Fluctuation not only increases the drilling cycle, but also accelerates the wear of the drill bit. As a result, the construction period has been delayed, and the drilling cost has also been increased. New drilling technologies are urgently needed to increase the drilling speed, shorten the drilling cycle, and imp...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a hybrid PDC drill bit based on jet technology, which overcomes the problems of poor adaptability of the drill bit in complex formations, long drilling cycle, limited drilling speed and high drilling cost in the prior art. Realize mechanical and hydraulic cross-type rock breaking in variable strata, improve the adaptability of the drill bit to various strata, improve rock breaking efficiency, shorten drilling cycle, reduce drilling cost, and improve exploration and development benefits

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