Horizontal Directional Drilling

Roschen's Drill Pipe product range includes sizes from 2-7/8" diameter pipe to 6-5/8" diameter pipe. All TSC API grades meet or exceed the standards. We select only pipe from mills that meet our stringent pipe wall specifications.

Drill Pipe and Heave Weight Drill Pipe Specifications ...

Drill pipe is one of the necessary components to any drilling rig designed to extract oil or other liquid materials from the ground. The drill pipe is not used for extraction. Instead, the hollow tubes pump drilling fluids downward to the bit and back out again as needed to reduce friction and heat buildup.

Drill Pipe and Heavy Weight Drill Pipe
Drill pipe is one of the necessary components to any drilling rig designed to extract oil or other liquid materials from the ground. The drill pipe is not used for extraction. Instead, the hollow tubes pump drilling fluids downward to the bit and back out again as needed to reduce friction and heat buildup. Drill pipe transferred drilling torque to drill bit for drilling under the oil well. It bears complicated strength subject to pulling, loading, pressing, torsion and bending.

Horizontal Directional Drilling is a method of installing utility pipelines and conduits under a wide variety of surface obstacles. First developed in the 1950s, this technique combines those used in conventional road boring with those found in oil and gas directional drilling. This method is now very popular for oil, water, natural gas and waste water pipelines as well as conduits for power and fiber optic cables. The main benefit is the ability to install these services without using traditional trenching methods, avoiding unnecessary environmental impact and providing additional security.

Process

• SITE INVESTIGATION AND DESIGN – Includes the site survey, locations of existing pipelines and services, and a geological investigation. Placement and equipment are then determined.

• PILOT HOLE DRILLING – A Pilot hole is drilled from the entry point to the exit point along the pre-determined profile and direction.

• HOLE ENLARGEMENT – In most cases pilot hole enlarging, also known as "pre-reaming," will be necessary. This is required to provide a bore diameter large enough for the pipeline to be installed in the drilled crossing.

• PULLBACK – The pipeline is pre-assembled and placed on rollers. A reamer is then connected to the drill pipe to enlarge the bore. The drill pipe is pulled back to the entry point until the pipeline is completely installed.

Benefits
•    A single location area can be used to install different pipes.
•    Less invasive, protects the ecosystem and adjacent areas.
•    More secure than traditional open cut.
•    Weather will not impact directly on the process.
•    Limited disruption, ideal for sites such as roadways, railways, recreational facilities, waterways and areas of high population density.
•    Ability to drill beneath surface obstructions or ongoing site operations.

For most HDD applications, the drilling tools and rig equipment are individually designed for each job. Pipe selection is a critical part of this process. Roschen manufactures a wide range of pipe suitable for most HDD projects. By offering 3 1/2" OD to 7 5/8" OD with connection configurations matching the design requirements, Roschen is one of the largest suppliers to this specialized industry. Tungsten carbide hard-banding and non-standard lengths are available on request.

ROSCHEN@ INC.                                 
ROSCHEN@ GROUP LIMITED
ROBERT ROSCHEN@ LIMITED
ROSCHEN@ HOLDINGS LIMITED    
HEFEI ROSCHEN@ TOOL CO., LTD.
ROSCHEN@ GEOLOGICAL TOOL CO.,LTD.
SHANGHAI ROSCHEN@ INTERNATIONAL CO., LTD.
ROSCHEN@ GEOLOGICAL INSTRUMENTS CO., LTD.  
EMAIL: roschen@roschen.com ; roschen@roschen.net
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