Special-purpose drill for well drilling

Abstract

The invention discloses a special-purpose drill for well drilling. The special-purpose drill for well drilling comprises a drill body, a connection male head and a clamping handle, wherein the drill body, the connection male head and the clamping handle are sequentially connected to one another fixedly; the drill body comprises a fixing device and a drilling knife tackle; the drilling knife tackle is fixedly connected to the fixing device; the fixing device has a cylindrical structure; the radius of the fixing device is greater than that of the connection male head; the height of the fixing device is 0.5-0.8m; the drilling knife tackle comprises a plurality of drilling blades; and a plurality of projections are uniformly arranged on each drilling blade. The special-purpose drill for well drilling has the advantages that the special-purpose drill for well drilling comprises the drill body, the connection male head and the clamping handle, and the drill body, the connection male head and the clamping handle are fixedly connected to one another sequentially; the drill body comprises the fixing device and the drilling knife tackle, and the drilling knife tackle is fixedly connected to the fixing device; and the special-purpose drill for well drilling is simple in structure, by the connection male head, the drilling force of the drill is increased, the drilling knife tackle is matched with the fixing device, and an effective well drilling effect is achieved.

Description

technical field [0001] The invention relates to a special drill bit for drilling, which belongs to the field of drilling equipment. Background technique [0002] The drill bit is an essential tool for breaking rocks when drilling. There are mainly three types of roller cone bits, diamond drill bits and scraper bits. Among them, ①Roller cone bits are composed of bit body, claws, roller cones, bearings, water eyes, etc. According to the structure of the cone, it is divided into two types: milling tooth type and insert type. According to the structure of the bearing, it is divided into two types: sealed (or unsealed) rolling bearing and sealed (or unsealed) sliding bearing. The cone bit is suitable for drilling various formations. most extensive. ②Diamond drill bits are initially only used in hard formations, but their varieties and scope of use are expanding day by day. Although the price of the drill bits is high, they have a long working life. If the selection is reasonab...

AI Technical Summary

Problems solved by technology

②Diamond drill bits are initially only used in hard formations, but their varieties and scope of use are expanding day by day. Although the price of the drill bits is high, they have a long working life. If the selection is reasonable, better economic results can be achieved; ③Scraper drill bits have a simple structure , easy to manufacture, fast drilling speed in soft formations, but large torque when drilling, easy to damage

[0004] With the development of the oilfield drilling industry, the geological conditions of oilfields are diverse. The main problems of ordinary drill bits are low drilling efficiency, poor drilling efficiency, and complicated drilling technology. Reduced service life, affecting yield

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