Formula and technique for manufacturing geophysical prospecting bit by powder sintering

Abstract

The invention discloses a formula and a technique for manufacturing a geophysical prospecting bit by powder sintering. The formula comprises the following raw materials: in the mixed tungsten carbide powder, 60 to 80 meshes of tungsten carbide powder is 30 percent to 40 percent, 80 to 200 meshes of the tungsten carbide powder is 60 percent to 70 percent, the proportion of the tungsten carbide powder, bonding alloy and dehydrated sodium tetraborate is 100:62.5:5 and the bonding alloy is copper-manganese-nickel alloy, and the proportion of the copper, manganese and nickel is 68:27:11; and the technique comprises the steps of die making, material mixing, preprocessing of steel body, filling, sintering and trimming. At present, the geophysical prospecting bit is mainly processed and manufactured mechanically, and the material and the structure of the bit is more single; and in order to adapt to the exploration of areas with complex formations, the invention adopts powdery materials which are easy to change the material of the bit and can manufacture the bit with complex structure by designing a mold. The formula has low cost, the performance of the finished product is reliable, the technique steps are optimized properly, the technique is simplified and the cost-performance ratio is high.

Description

1. Technical field [0001] The invention relates to a powder sintering formula and a process for manufacturing a geophysical exploration drill bit, and is especially suitable for a cemented carbide drill bit for oil and natural gas geophysical exploration operations. 2. Background technology [0002] At present, with the gradual expansion of my country's oil and gas resources exploration field, in some complex stratum areas (such as desert areas, swamp areas and loess plateau areas, etc.) In geophysical exploration operations, the existing geophysical drilling tools cannot meet the needs of exploration, especially the performance of geophysical drilling bits is more obvious. Mainly because: (1) existing geophysical prospecting bit mainly is based on air hammer bit, and kind is single. (2) The air hammer drill bit has a single structure and poor applicability to rock formations. In hard formations, the rock breaking effect is good, but in gravel layers, soft and hard formatio...

AI Technical Summary

Problems solved by technology

[0002] At present, with the gradual expansion of my country's oil and gas resources exploration field, in some complex stratum areas (such as desert areas, swamp areas and loess plateau areas, etc.) In geophysical exploration operations, the existing geophysical drilling tools cannot meet the needs of exploration, especially the performance of geophysical drilling bits is more obvious

Mainly because: (1) The existing geophysical exploration drill bits are mainly air hammer drill bits, with a single variety

(2) The air hammer drill bit has a single structure and poor applicability to rock formations

At present, the production of geophysical drilling bits is mainly manufactured by mechanical processing. This process needs to consider factors such as the processing capacity and processing structure of the tool during the processing process. The selection range of materials is relatively narrow, and the design of the drill bit structure is relatively simple, which affects The wear resistance of the drill bit and its applicability to the formation make it difficult to drill into holes under complex formation conditions

Moreover, for some drill bits with complex structures, the cost is too high by machining

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