Sour Service Drill Pipe

Due to the lack of relevant specification, the industry accepted the USA NACE and Canada IRP standard.  

JSH have rich experiences in manufacturing sour service drill pipe, and can meet strict industry standard(IRP).

Large exports of 3 ½", 4", 5" and 51/2" to 

Canadian market and applied (Canadian Rockies)

Large quantity of 4", 41/2" and 51/2" supplied to 

Sinopec Xinjiang and Sichuan

Sinopec project -- deepest well  in Asia (Langzhong

5 7/8” drill pipe SS110 grade, 12.7mm, JSHDS55) 

All above gained good feedback from users 

In order to satisfy customers’ requirements for special environments,   JSH continuous improve as below,    

•Offer various choices for steel grades

•Improve chemical composition

•Heat treatment improvement

•Optimization of the resistance to fracture toughness

•Limited controlled yield strength and hardness

•Reduce the carbon content

NACE tensile test （option A）

 Use 6.35mm sample to do NACE test 

Test include loading the test specimen up to specified recess level

Test specimen exposed in H2S saturated solution(5% Nacl, 0.5%CH3COOH)

Test lasts 720 hours at room temperature（30days）

Ref.: ANSI/NACE Standard TM0177-2005 

SS Drill Pipe Body Mechanical Performance 

Note：

1.Drill pipe specimen,   according to NACE TM-01-77-2005 option A ,   put in the H2S saturated solution and with the pressure of 85%minimum yield strength conditions,  shall last for 720hours without cracks.

2. Test frequency：Every batch or one batch of heat treatment,  or every 200 joints sampling test. （1/200/heat）

3．NACE standard：If there is one specimen is failed in the spot check,  shall 

pick up two specimen from this batch to retest,  if anyone of them is failed,  

that means this batch is unqualified,   need to be re-heat treatment.

SS drill pipe tool joint mechanical performance

Note：

1.Tool joint specimen,  according to NACE TM-01-77 option A , put in the H2S saturated solution and at the pressure of 65%minimum yield strength conditions,  shall last for 720 hours without cracks.

2. Test frequency：Every batch or one batch of heat treatment, or every 200 joints sampling test. (1/200/heat)

3.NACE standard：If there is one specimen is failed in the spot check,  shall pick up two specimen from this batch to retest,  if anyone of them is failed,  that means this batch is unqualified,  need to be re-heat treatment.