The application of three-ribbed drill pipe and its difficulties in manufacturing

2020-09-04 17:37:43

The high pressure sealed three-prism drill pipe is used for high pressure injection to assist drill bit drilling, air exhaust drilling technology and other coal and rock drilling work, its function is to transfer the rotation driving force and feed driving force of drilling machine, and serve as the safe passage for water, wind and other substances from the mechanical and electrical equipment outside the hole to the drill bit at the bottom of the hole. Most of the drill pipe used for mine use adopt the transition fit of taper thread or the inner hole connected by male joint and female joint head to carry out sealing geological drill pipe.

At the present stage, the drill pipe sealed with cone thread only can bear the pressure of 0.5~3MPa. However, because the cone thread is damaged under the condition of constantly disassembling and assembling the drill pipe, its sealing ability will decrease with the improvement of the damage level. The sealing ability will be improved if the inner hole of the joint part and the female connecting head is put into the sealing ring to carry out sealing. However, the sealing ring is very easy to be deformed and invalid under the squeezing of two or three edges of the sealing drill pipe cross section. Often the removal and replacement of the sealing ring reduces the high efficiency of drilling and increases the cost of drilling. Due to the high precision and serious damage during the whole process of construction, the seal method for unique production and processing is less sustainable in industrial production.

High-pressure hydro-electric sealed three-rowed drill pipe, generally called three-rowed drill pipe, is divided into conical thread type, high-pressure sealed slotted drill pipe and three-rowed joint type according to the connection mode of the connecting head. This product selects high quality medium carbon alloy pipe as drill pipe body, both sides connecting head selects high quality 42CrMo raw material, after high pressure solution to form, vacuum pump heat treatment. Excellent friction welding welding production process is selected, the drill pipe has high tensile strength, strong welding and other characteristics, compared with the same industry, further improve the physical properties of commodities and integrate into the complex geological standards of deep hole drilling jangang stone drill head exploration ability.

In the whole process of electric welding, the thin and thick diameter of the three-edged drill pipe will be produced, which will cause inconvenience and harm the quality of the drill pipe. Secondly, some applications of sulphate may cause erosion of the drill pipe, resulting in its ineffectiveness. In the process of three-edge drill pipe, PDC bit is easy to crack due to its poor ductility. As a result, some customers have encountered many inconveniences in the application of the three-ridged drill pipe.

Nowadays, some relevant enterprises that produce and manufacture three-rowed drill pipe have adopted relevant countermeasures, advancing with The Times, and solved the problems in the three-rowed drill pipe processing process. For example, the application of sulfate resistance makes the drill pipe no longer corroded. Some manufacturers have also developed new steel brands to increase the ductility of steel.

Linqing Huanye Machinery Equipment Co., Ltd. is a geological drill pipe, PDC bit manufacturer, the main business of a variety of grooves drill pipe, three-ridged drill pipe and jin-gang-stone composite piece bit product research and development and marketing. Root processing plant production and processing, cost-effective, low price! https://www.huanyejixie.com