Drill Stem Subs

Date: 17 Aug 2009
Drill Stem Subs are used to connect two different drilling string parts. Drill Stem Subs are classified into 7 different types according to the their function. Details pls refer to: link
Tensile Properties and Impact Properties are the same as requirement of drill collars as spcified in Drill Collar Section.
Ordering instruction, pls specify:
Identify sub use. Example: Kelly Sub, Crossover Sub for drill pipe to drill collar, Crossover Sub for drill collar to drill collar, Bit Sub etc;
Overall Length;
Largest Diameter;
Size and type of upper and lower connections, Pin or Box;
On reduced section subs, specify:
  Diameter of reduced section
  Length of reduced section
On Bit Subs, specify:
  Float bore, size and type
Contact information:
Henan Shenlong Petroleum Drilling Tools Co., Ltd
Technology and Industrial Garden, Jiyuan City, Henan Province, P.R.China[454650]
Send message
Membership: Sign In, Or Register now.
[ Close ]   [ Print ]   [ Top ]
Best Viewed With Internet Explorer 6.0
© 2008 DRS iNNOVATIONS GROUP LTD. All Rights Reserved