Split type tri-cone drill

A three-cone, split-type technology, applied in the direction of drill bits, drilling equipment, earthwork drilling and mining, etc., can solve the problems of three-cone bit rock-breaking efficiency and low tooth scraping efficiency, and achieve good lubrication environment and tooth scraping efficiency Improve and prevent the effect of mud bag

Pending Publication Date: 2018-08-24
SOUTHWEST PETROLEUM UNIV
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  • Claims
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AI Technical Summary

Problems solved by technology

At present, most of the three-cone bits that have been used in actual production have only one cone body installed on the palm, that is, the cone body has only one rotation speed when it rotates around the journal of the tooth palm, resulting in a The tooth scraping efficiency of the end ring gear will show certain rules: the tooth scraping efficiency of the small end ring gear is the lowest, the tooth scraping efficiency of the large end ring gear is the highest, and the tooth scraping efficiency of the middle ring gear is between the two, which will Impact on rock breaking efficiency of tri-cone bit

Method used

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  • Split type tri-cone drill

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with accompanying drawing.

[0023] Referring to the accompanying drawings, the split-type three-cone bit is characterized in that: the split-type three-cone bit is mainly composed of the first cone set, the second cone set, the third cone set, teeth 7, tooth palms 8, oil storage compensation The pressure balance system 10 and the nozzle 16 are characterized in that: the oil storage compensation pressure balance system 10 is installed at the lower end of the back of the palm 8; the nozzle 16 is arranged on the drill body; the teeth 7 are arranged on the second The cloth tooth surfaces of the first gear group, the second gear group, and the third gear group; the tooth palm 8 is provided with the tooth palm journal oil guide hole 17, the plug pin hole a18, and the tooth palm oil guide hole 19. Oil hole 20; the first gear set includes the first gear lower body 3 and the first gear upper body 4, the first ...

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Abstract

The invention relates to a split type tri-cone drill which is mainly composed of a first cone set, a second cone set, a third cone set, teeth, bit legs, an oil storage compensation pressure balance system and a spraying nozzle. The three bit legs are separately connected to three cone lower bodies through biased bit-leg journals at the lower ends of the three bit legs. Three cone upper bodies areseparately installed on journals of the three cone lower bodies. During operation, the three cone lower bodies separately orbit with a drill body and rotate around the bit-leg journals; and the threecone upper bodies separately orbit with the drill body and rotate around journals of the three cone lower bodies, the task of scraping and crushing rocks is achieved, so that the tooth scraping efficiency of a small end tooth ring and a middle tooth ring is improved, and the rock crushing efficiency of the drill is improved.

Description

technical field [0001] The invention relates to a split type tri-cone drill bit used for oil, natural gas drilling and other geological drilling. Background technique [0002] In oil drilling, the most widely used drill bit that can adapt to various formations so far is the roller cone bit. The most widely used roller cone bit is the tricone bit, which is widely used in oil, natural gas drilling and other geological drilling. With the further development of petroleum resources, the number of oil wells that can be exploited by conventional drilling is getting less and less, and the difficulty of mining is becoming more and more difficult. Drilling has gradually developed to deep wells and ultra-deep wells. Improving the rock-breaking efficiency of tri-cone bits is the key to improving drilling Key technical issues of efficiency. [0003] When the three-cone bit drills rock, it crushes and impacts through the interaction force between its cone rotation and the rock to achiev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/16E21B10/24
CPCE21B10/16E21B10/24
Inventor 田家林何虹志杨琳熊洁周仪周思奇黎根银
Owner SOUTHWEST PETROLEUM UNIV
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