Downhole Power Vibration Shock Drilling Tools

Abstract

The invention belongs to the field of petroleum drilling, and particularly relates to an underground power supply type vibration impact drilling tool. The underground power supply type vibration impact drilling tool includes an upper outer cylinder, a battery cylinder, a battery pack, a lower outer cylinder, a power cylinder, a low-speed motor, a lower support, a core shaft, a drill bit, an upper commutator segment, a lower commutator segment, and a spline; the upper outer cylinder and the lower outer cylinder are threadingly connected; the battery pack is arranged in the inner part formed by the upper outer cylinder and the lower outer cylinder; the power cylinder is threadingly connected to and fixed on the lower outer cylinder; the lower commutator segment is arranged under the upper commentator segment; the core shaft is connected to the drill bit through threads; the spline is arranged at the outer side of the core shaft; the battery pack can provide a stable power source for the low-speed motor; and the upper commutator segment and the lower commutator segment can perform relative motion through engagement of two smooth slopes, and can drive the drill bit to do rotation and axial impact motion under the action of the spline. The underground power supply type vibration impact drilling tool can provide a stable axial impact power source and the stable axial impact frequency, cannot affect rotation of the drill bit, can achieve joint rock breaking through static pressure rotation and dynamic load impact of the drill bit, and can effectively improve the speed of petroleum drilling.

Description

technical field [0001] The invention relates to a downhole power supply type vibration impact drilling tool, which belongs to the field of petroleum drilling. Background technique [0002] At present, the oil industry is in a cold winter period. In order to cope with the long-term and sustained low oil price situation, it is necessary to continuously improve the efficiency of oil exploration and development and reduce the cost of oil and gas development. By increasing the ROP of oil drilling, the drilling and construction period can be effectively reduced and the drilling cost can be reduced. Vibration impact drilling technology is a new technology to efficiently increase the drilling speed of drilling machinery. By applying axial impact load to the drill bit, the technology adds axial impact to the original rotation of the drill bit and realizes the rotation of the drill bit. The combination of pressing and impact rock breaking has changed the rock breaking method of conve...

AI Technical Summary

Problems solved by technology

[0003] The existing vibration impact drilling technology tools include hydraulic type, rotary valve type, jet type, screw type, etc. The power source of the axial impact load mainly comes from the hydraulic energy of the drilling fluid, the vibration energy of the drill string, etc. Due to the need to consume drilling fluid Hydraulic energy, drill string vibration instability and other reasons lead to the existence of unstable power source, large hydraulic energy consumption of drilling fluid, low stability and low single impact energy in this type of vibration impact drilling tools, which seriously restrict vibration impact Large-scale popularization and application of drilling technology

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