Oil Drill Pipe

Expandable tubular technology is putting the  cold expansion process of steel tube and its threads in the factory to the down hole complex conditions, which isknown as international petroleum engineering in the 21 century.
 
Why to development of expandable tubular technology?
 
The pre expansion with small diameter, easy to run;
The diameter increased after expansion , can solve the problems of petroleum engineering.
  
The difficulties of expandable tubular technology:
 
The expandable ability of  material
 
The expandable ability of  thread
 
Hanging and sealing  performances
 
The expansion  reliability
 
 
We Completed two research projects "the expandable tubular drilling technology",  "expandable sand screen key technology",had 25 patents  (inventions 2), published the first literature of expandable tubular technology in China.
 
Based on the research of expandable tubular, overcome the key problems of expandable tubular material, expansion screw, expandable tool and sealing material, developing the expandable casing, expandable  screen and expandable liner hanger 3 types of products.
 
 
Products functions
Expandable casing:casing damage repair,
special process well completion,
 
complex formation plugging.
Expandable liner hanger:
liner completion and workover,
 
well structure optimization,
 
solve the liner head sealing problems.
 Expandable screen:
casing damage wells sand control, openhole sand  control, improved the sand control effect.