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Contact us:

Company name: TianJin Shiruida Machinery Import & Export Co., Ltd

Main products: Petroleum machinery and Petroleum mechanical fittings

Business nature: Joint stock company

Tel: 0086.22.24716021  24716013   24716017 

Fax: 0086.22.24716023

Address: East15#,Chengfa Industrial zone,Xuelian South Road,Hedong District,Tianjin,China

Zip code:300185

Website: http://www.shiruida.cn       http://www.shiruida.com         

E-mailinfo@shiruida.com     sales@shiruida.com      






               Spiral drill collars

Spiral drill collars

Spiral drill collar is a kind of products of our company. Spiral grooves make mud circulate freely around the drill collar to equalize pressure for sake of drill pipe sticking. It reduces the probability of sticking occurrence due to different pressure through reduction of touching area.
Spiral drill collar is widely used because of its special structure. The special grooves decrease the volume of the contact with the well wall. It leads to the decrease of the sticking and turning of the drill pipe string.
The weight of Spiral drill collar will be reduced approximately 4%-6% by spiral conversion.
Inspections for spiral drill collars:
According to API SPEC, each collar undergoes inspections, including thread fluorescent magnetic-particle detection and full-length ultrasonic flaw detection and to ensure the quality.



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