Sapphire inner-spiral pulse type spiral-complex comprehensive-drilling bit with mud diversion trench

Abstract

The invention discloses a sapphire inner-spiral pulse type spiral-complex comprehensive-drilling bit with a mud diversion trench. A primary pulse chamber and a second pulse chamber are respectively excavated at the upper end and lower end of the central part of a screw thread connector of the bit; a first buffer chamber, a second buffer chamber, an inner spiral diversion trench, a plurality of spiral-path wing bodies, an outer spiral-path wing and an outer spiral diversion trench are excavated respectively at the central part of a spiral body, and gauge teeth and teeth are welded; compound pieces and complexes are welded on the convex surfaces of the spiral-path wing bodies in an embedding manner; and first inner spiral nozzle outlets and second inner spiral nozzle outlets of a spiral groove mud groove outlet, which are different in type, specification and quantity and are arranged in a nonlinear manner, are respectively excavated in crown grooves at the bottoms of the concave surfaces of the spiral-path wing bodies. The bit has the characteristics of good stability, impact resistance, wear resistance, good toughness and uniform stressing, the insufficient cross cutting force of the spiral complex bit is made up, the wear of the complex formation to the bit is effectively solved by the internal and external combination, the service life of the bit is prolonged, and the drilling-up times are reduced.

Description

technical field [0001] The invention relates to a drill bit used in geological exploration, oil drilling and tunnel engineering, in particular to a sapphire inner helical pulse type helical composite comprehensive drilling drill bit. Background technique [0002] After the sapphire spiral composite comprehensive drilling bit (patent application number 201010276122.5) and the spiral groove mud nozzle (201110125869.5) developed by me were put into use in the oil drilling process of Shaanxi, Gansu, Ningxia, Mongolia and Jin oil and gas fields, they were obtained after use. The data proves that the drill technology has achieved overdue results, especially in the highly abrasive Pentland rock formation, which has greatly improved the drilling speed and drilling quality. During drilling, the report records show that the drilling speed of the drill bit and the sand-carrying ability of the mud are also very good. After use, according to the drilling data of nearly 30 wells with dif...

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Problems solved by technology

[0003] However, the above two patents focus on the flow rate of the mud in the well, the ability to carry sand in the well, the cooling and lubrication effect of the drill bit, the instantaneous impact force of the high-pressure mud on the rock formation, and the rock-breaking cross-cutting force, especially in deep wells below 3200 meters and ultra-deep wells below 5000 meters. There are still some defects in the use of

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