Geological Drilling Seamless Pipes
Geological pipes are used for geological drilling and are used by construction teams for geological drilling.
Commonly used materials/steel grades: DZ40, DZ50, DZ60, R780, etc.
Geological pipe (YB235-70) steel pipe has a hollow section and is widely used as a pipeline for transporting fluids, such as pipelines for transporting oil, natural gas, coal gas, water and certain solid materials. According to the purpose, it can be divided into drill pipe, drill collar, core pipe, casing and sedimentation pipe, etc.
During the geological exploration process, the pipe used to connect the drill bit to the drilling rig rotates the drill bit underground to explore the underground conditions.
During geological exploration, drill collars are tools used to bring rock core back to the surface. The structure of a drill collar is similar to that of a drill pipe, except that the drill bit of the drill collar has holes that can bring back core samples while drilling into the ground.
A core tube is a special geological tube used to collect underground rock samples. During drilling, the drill bit passes through the rock and a core tube brings rock samples back to the surface for analysis.
Casing is a type of pipe that prevents the walls of a well from collapsing. During drilling, drill collars are passed through the casing to bring core samples back to the surface. The casing prevents the well walls from collapsing and also prevents groundwater contamination.
A sedimentation tube is a pipe that transports sediment. In the water treatment process, sedimentation pipes are used to transport sludge and other sedimentation materials. They can separate sediments through gravity sedimentation and centrifugal force.
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API 5DP Geological Drill Pipe chemical composition
Geological Drilling Seamless Pipes Mechanical behavior
| Dimensional tolerance | ||
| standard | Outer diameter tolerance | Wall thickness tolerance |
|
YB 235 |
D≤89.5 ±0.8%D>89.5 ±1% |
by standard |
API 5DP Drill Pipe
GNEE Additional value-added services
UT(Ultrasonic examination)
AR(As Hot Rolled only)
TMCP (Thermal Mechanical Control Processing)
N(Normalized)
Gnee product certificate
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Gnee Group participated in the NECC exhibition
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