Drilling acceleration tool suitable for screw drill
A screw drilling tool and drilling technology, which is applied to drilling tools, drilling equipment, driving devices for drilling in wellbore, etc. low resistance effect
Inactive Publication Date: 2020-12-08
CNPC BOHAI DRILLING ENG +1
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Problems solved by technology
In the process of drilling with screw drilling tools, the drill bit is subjected to complex unbalanced forces, so that the cutting tooth movement direction and cutting surface of the drill bit are constantly changing, and the cutting teeth are subject to irregular alternating loads and impact loads, which seriously affect the drilling efficiency and reduce the drill bit. life
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[0018] Next, the technical solutions in the embodiments of the present invention will be described in conneffled and complete, and it is clear that the described embodiments are merely the embodiments of the present invention, not all of the embodiments. Embodiments in the present invention, those of ordinary skill in the art are in the range of protection of the present invention without making creative labor.
[0019] In the description of the present invention, it is to be noted that the orientation or positional relationship indicated by "upper", "lower", "within", "outside", "top / bottom", etc. is based on the orientation shown in the drawing. Or the location relationship is intended to facilitate the description of the invention and simplified description, rather than indicating or implying that the device or element must have a particular orientation, and is not understood to limit the invention. Moreover, the term "first", "second" is for description purposes only, and ca...
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The invention discloses a drilling acceleration tool suitable for a screw drill. The drilling acceleration tool comprises a drainage connector, a speed changer, a large-weight cylinder and an outer barrel, the upper end of the drainage connector is connected with the screw drill, the outer barrel is connected with the outer side of the lower end of the drainage connector, the upper end of the speed changer is connected with the middle of the lower end of the drainage connector, and the large-weight cylinder is connected with the lower end of the speed changer. Drainage connector channels serving as flow guide holes are formed in the periphery of the drainage connector. All connections adopt one or more of threaded connection, welding connection, bonding connection and bolt connection. Thedrilling acceleration tool can prevent or reduce a swing amplitude of a drill bit in the drilling process of the screw drill, so that the drilling efficiency of the screw drill is improved, and the service life of the drill bit is prolonged.
Description
Technical field [0001] The present invention relates to the field of oil drilling, particularly suitable for drilling speed of screw drill tool. Background technique [0002] With the development of oil drilling technology, efficient drilling technology has become the focus of aspects of oil drilling. Screw hole drilling using the drill bit by the complex uneven force, the drill bit direction of motion of the cutting teeth changing cutting surface, the cutting teeth being irregularly alternating load and impact load, seriously affect the drilling efficiency, reduced bit life. Inventive content [0003] Object of the present invention is to solve the above problems and to provide a drill capable of preventing or reducing the oscillation amplitude in the screw hole drilling, thereby improving the efficiency of screw hole drilling, increased bit life speed tool. [0004] To solve the above technical problem, the present invention adopts the following technical solutions: A suitable...
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Login to View More IPC IPC(8): E21B4/02E21B12/00
CPCE21B4/02E21B12/00
Inventor 王瑶柳鹤叶顺友于琛许京国王佳孙四维刘方义
Owner CNPC BOHAI DRILLING ENG