Jet oscillation tool capable of generating axial pressure pulses
An axial pressure, oscillating tool technology, applied in the direction of drilling with vibration, can solve the problems of reduced rock breaking efficiency of the drill bit, friction in large-reach horizontal wells, and difficulty in drilling torque transmission, so as to improve WOB transmission and reduce drilling costs. , The effect of improving drilling efficiency
Inactive Publication Date: 2019-07-23
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology
Among them, extended-reach horizontal wells are one of the hot spots in the petroleum industry today. During the drilling process of extended-reach wells, there are problems such as friction, excessive torque, and difficulty in wellbore purification.
Due to excessive drilling friction, it is easy to cause problems such as drill string support pressure and difficulty in drilling torque transmission, which reduces the rock breaking efficiency of the drill bit, thereby affecting the entire drilling project. How to solve the problem of large friction in the process of horizontal well drilling has become a drilling problem Key technologies that need to be solved urgently
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[0017] Exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be understood that the embodiments shown and described in the drawings are only exemplary, and are intended to illustrate the principle and spirit of the present invention, but not to limit the scope of the present invention.
[0018] Those of ordinary skill in the art will realize that the embodiments described here are to help readers understand the principles of the present invention, and it should be understood that the protection scope of the present invention is not limited to such special statements and embodiments. Those of ordinary skill in the art can make various other specific modifications and combinations that do not depart from the essence of the present invention based on the technical enlightenment disclosed in the present invention, and these modifications and combinations still fall within the protection scope of the presen...
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The invention discloses a jet oscillation tool capable of generating axial pressure pulses. The jet oscillation tool comprises a locking joint, a linear flow channel, a left backflow flow channel, a jet element, a right backflow flow channel, a left inward-jet flow channel, a right inward-jet flow channel, a right splitter plate, a left splitter plate, a right outlet flow channel, a left outlet channel, an oscillation shell, a locking bolt, a bolt washer and a locking nut. According to the jet oscillation tool, the drilling liquid pressure is utilized, the jet oscillation effect is generated through the jet element, drilling liquid circulates in the jet element, due to the special flow channel structure design of the jet element, the drilling liquid can generate the wall-attachment and switching effects in a flow channel in the jet element, through self-circulation control, self-excited jet oscillation is generated, and pulse pressure fluctuation is formed. According to the jet oscillation tool capable of generating the axial pressure pulses, hydraulic energy of the drilling liquid can be converted into mechanical energy to generate jet oscillation, pulse pressure fluctuation is formed, and the jet oscillation tool is simple in structure, convenient to assemble and disassemble and high in safety and reliability.
Description
Technical field [0001] The invention relates to a new type of drilling tool used in the field of petroleum and natural gas engineering, especially a jet oscillating tool that can generate axial pressure pulses. Background technique [0002] With the development of the petroleum industry, in order to obtain better economic benefits, the development of complex structure wells such as deep wells, ultra-deep wells, extended reach wells and long-distance horizontal wells has become an inevitable trend in the oil and gas field. Among them, extended reach horizontal wells are one of the hot spots in the petroleum industry today. In the process of drilling extended reach horizontal wells, there are problems such as friction, excessive torque, and difficulty in borehole purification. Due to the excessive drilling friction, it is easy to cause problems such as drill string support pressure and difficult drilling torque transmission, which reduces the efficiency of drill bit rock breaking, ...
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Login to View More IPC IPC(8): E21B7/24
CPCE21B7/24
Inventor 田家林杨应林宋豪林刘亚迪刘刚邓喆
Owner SOUTHWEST PETROLEUM UNIV