Circumferential damping tool and method
A tool and shell technology, applied in the field of circumferential vibration damping tools, can solve the problems of tool failure, self-locking, and affecting the effect of on-site application, etc.
Active Publication Date: 2020-09-08
BC P INC CHINA NAT PETROLEUM CORP +2
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Problems solved by technology
When the tool is in use, self-locking tends to occur when the multi-thread pair is used for a long time, resulting in tool failure, which seriously affects the field application effect
Method used
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[0056] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. After reading the present invention, those skilled in the art Modifications to various equivalent forms of the present invention fall within the scope defined by the appended claims of the present application.
[0057] It should be noted that when an element is referred to as being “disposed on” another element, it may be directly on the other element or there may also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar exp...
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The invention discloses a circumferential damping tool and method. The tool comprises an electric power supply system, a vibration monitoring system electrically connected with the electric power supply system and a circumferential damping execution system electrically connected with the electric power supply system. The vibration monitoring system comprises a vibration measurement sensor and a monitoring and processing unit. The circumferential damping execution system comprises a first shell and a reciprocating mechanism arranged in the first shell. The reciprocating mechanism comprises a back and forth impact hammer and a back and forth movement cylinder arranged outside the back and forth impact hammer in a sleeving mode. Isolated back and forth cavities are formed between the back and forth impact hammer and the back and forth movement cylinder. The back and forth impact hammer is provided with liquid inlet through holes. The back and forth movement cylinder is provided with first liquid discharge outlets. The first shell is provided with second liquid discharge outlets capable of communicating with the first liquid discharge outlets and a drill bit connector. The inner side of the upper end of the drill bit connector is connected with the back and forth impact cylinder, and the outer side of the drill bit connector is connected with the first shell through a force transmission mechanism. By adoption of the circumferential damping tool and method, circumferential stick-slip vibration of a drilling tool can be relieved.
Description
technical field [0001] The invention relates to the field of supporting devices for oil and natural gas drilling, in particular to a circumferential shock absorbing tool and method. Background technique [0002] During the drilling process, the vibration of the drill string mainly includes: lateral vibration, longitudinal vibration and torsional vibration, and the coupled vibration of the above three vibrations. When drilling into a formation with high hardness, the drilling tool is prone to circumferential vibration, which will damage the cutting teeth of the PDC (Polycrystalline Diamond Compact bit) bit, affect the use of the bit, and reduce the life of the bit. [0003] Generally, during the normal drilling process, the PDC drill bit continuously eats into the rock under the action of the drilling pressure, and relies on the torque provided by the drill string to continuously rotate and shear the broken rock. When the hardness of the formation rock is high or the drill b...
Claims
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IPC IPC(8): E21B17/07G01H17/00
CPCE21B17/07G01H17/00
Inventor 崔龙连孙梦慈汪海阁冯雪龙王世永张富成查永进
Owner BC P INC CHINA NAT PETROLEUM CORP