High-efficiency rock-breaking combination tool with punching-and-rotating scraping-and-cutting stepping function

A combined tool and stepped technology, applied in the direction of drill pipe, casing, drill pipe, etc., can solve the problems of slow drilling speed, low drill bit life, incompatibility, etc., and reduce drilling tool vibration and tripping. Time and cost, the effect of speeding up drilling
CN108179983AInactive Publication Date: 2018-06-19SOUTHWEST PETROLEUM UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
SOUTHWEST PETROLEUM UNIV
Publication Date
2018-06-19
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention relates to a high-efficiency rock-breaking combination tool with a punching-and-rotating scraping-and-cutting stepping function, and the high-efficiency rock-breaking combination tool iscomposed of a front chopping bit, a nipple, and a PDC drill. The front chopping bit is connected with the nipple, impact teeth are mounted on the chopping bit, and flutes and water spraying nozzles are formed at the outer side of the chopping bit; the upper end of the nipple is connected with the PDC drill through a screw thread; PDC teeth are diagonally distributed on PDC blades; and the flutesare formed between every two adjacent PDC blades, and the water spraying nozzles are arranged on the flutes. The model of the nipple can be replaced, and the length of a stepping structure between thefront chopping bit and the rear PDC drill is adjusted by installing nipples of different series with different lengths. Through a punching-and-rotating scraping-and-cutting stepping structure of thechopping bit and the PDC drill, hierarchical crushing of a rock is realized, and the difficulty of rock breaking is reduced; and the combination of different rock breaking tools can be realized, the vibration during the drilling process is greatly reduced, the adaptability of rock breaking of the drill to deep complicated formation is improved, the rock breaking efficiency is improved, and the service life of the drill is prolonged.
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Description

technical field

[0001] The invention relates to a high-efficiency rock-breaking combined tool with stepwise action of punching and scraping, which belongs to the field of mechanical drilling devices for oil and gas resource exploitation. Background technique

[0002] 1. With the increase of exploration and development of oil and gas resources at home and abroad, the exploitation of oil and gas resources has gradually developed to deep wells, ultra-deep wells and complex and difficult-to-drill formations. The drill bit is a tool that directly acts on the rock in oil and gas drilling. However, the traditional roller cone bit and PDC bit have low rock-breaking efficiency, slow speed and short life during the drilling process, which cannot meet the current drilling process requirements for increasing speed and efficiency. The life of the drill bit and the adaptability of the drill bit to the rock play an important role in improving the drilling speed and reducing the drilling co...

Claims

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