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Products & services

Hilong Sour Service Drill Pipe

Product Introduction

Drilling at H2S environment with standard drill pipe is highly suspected to Sulfide Stress Cracking (SSC). Considering the sulfide stress cracking is extremely harmful, the developing of sour service drill pipe to meet the requirements of safe drilling in sulfur-containing environments is indeed necessary.
Sulfide stress cracking directly related tensional stress load, drilling environment (H2S partail pressure, PH value and the temperture, ect.), also related to drill pipe materail SSC property. Through the development of drill pipe materials and manufacturing technology, it facilitiate the drill pipe itself resistance to the sulfide stress cracking, and meeting the drilling requirements under the different sulfur-containing well is the direction and focus of Hilong's research and development over the years.
Key factors of sulfide stress cracking (SSC) property in Drill Pipe:
• Hardness
• Alloy designation of drill pipe material
• Metallurgy quality and purity 
• Heat treatment quality (martensite transformation rate, uniformation of metallograhic structure, uniformity of hardness)    

Product Advantage

·HLDT-SS®75, HLDT-SS®95, HLDT-SS®105, HLDT-SS®110 series of sour service drill pipes are the second generation of Hilong's SSC resistant drill pipe developed from HLDT-MS75, HLDT-MS95, HLDT-MS105/ HLDT-S®75, HLDT-S®95 and HLDT-S®105, meets the requirements of IRP1.8 and NACE test TM0177 method A & solution A, and can be used in critical sour drilling;
·HLDT-S®120 and HLDT-S®125 high-strength sour service drill pipes, satisfying the high strength and the resistance to hydrogen sulfide simultaneously, can be used for deep wells and extended reach wells in sour service environment.

Product Size/Grade

(a)Hilong Sour Service Drill Pipe Size:
2 3/8", 2 7/8", 3 1/2", 4", 4 1/2", 5", 5 1/2", 5 7/8", 6 5/8".
(b)Hilong Sour Service Drill Pipe Grade:
HLDT-SS®75, HLDT-SS®95, HLDT-SS®105, HLDT-SS®110, HLDT-S®120, HLDT-S®125.
(c)Hilong Sour Service HWDP Size：3 1/2", 4", 4 1/2", 5", 5 1/2", 5 7/8", 6 5/8".
(d)Hilong Sour Service HWDP Grade：HLHW-SS®75 and HLHW-SS®90.
 

                                       Hilong Sour Service Drill Pipe Performance Data

 

 

                                             Hilong Sour Service HWDP Data