Company Details

  • Hejian Deris Petroleum Drilling Equipment Co.,Ltd.

  •  [Hebei,China]
  • Business Type:Distributor/Wholesaler , Manufacturer , Retailer , Trade Company
  • Main Mark: Africa , Americas , Asia , Caribbean , East Europe , Europe , Middle East , North Europe , Oceania , Other Markets , West Europe , Worldwide
  • Exporter:91% - 100%
  • Certs:ISO9001, API, CE
  • Description:Trenchless Drilling,Trenchless Directional Drilling,Trenchless Horizontal Drilling,Horizontal Trenchless Drilling
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Trenchless Drilling

Product categories of Trenchless Drilling, we are specialized manufacturers from China, Trenchless Drilling, Trenchless Directional Drilling suppliers/factory, wholesale high-quality products of Trenchless Horizontal Drilling R & D and manufacturing, we have the perfect after-sales service and technical support. Look forward to your cooperation!
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36 inchTrenchless Horizontal Drilling Rock Bit

Model No. : 537

We build as small as 8" and as big as 80" Trenchless Drilling Bit . We offer both Mill tooth and TCI options with a variety of add on options. Please call with any questions about your particular needs and one of our experienced staff will make sure...

China Trenchless Drilling of with CE
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China Trenchless Drilling Suppliers

The Trenchless drilling


First : PILOT HOLE DRILLING

The pilot hole is drilled from the entry point to the exit point following a previously designed profile and alignment. The Drilling Tools and rig equipment selected for each job is largely determined based on the results of the geotechnical investigation and the size of the crossing (length and diameter). During the pilot hole drilling, a directional guidance system is used to navigate the pilot hole along its pre-designed profile. Marine Support including vessel and dive crew management is essential on Shore Crossing Projects.

tricone bit (2)


Second : HOLE ENLARGEMENT

In small diameter crossings the pipeline may be directly installed in the pilot hole. However in most cases pilot hole enlarging, known as [pre-reaming," will be necessary. Pre-reaming is required to provide a bore diameter large enough so that the pipeline can be installed in the drilled crossing. Based on the final desired diameter and soil conditions this process may include one or more stages.

non-dig hole opener

Deris Hole Opener 36inch

Third : PULL BACK

Once the drilled hole has been enlarged to the required diameter and cleaned adequately, the pipeline is installed. When applicable, the pipeline is pre-assembled in a single string and placed on rollers prior to pullback. For pullback, a reamer is connected to the Drill Pipe. Behind the reamer a swivel is connected allowing the drill pipe to rotate the reamer without allowing the transfer of torque to the product pipe. The drill pipe is then pulled back towards the entry point until the pipeline is fully installed.

non-dig hole opener1



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