The CHD Process: What to Expect from CHD

At Canadian Horizontal Drilling (CHD), or industry leading HDD experience allows us to take on all aspects of an HDD project. Listed below is a typical timeline of a CHD project, from assessment and design, through job completion and reclamation.

Site Assessment, Design, and Engineering

  • CHD will make an initial visit to the site, and together with the client will assess any concerns or problem areas that may arise. This is an important step as it may be necessary to change a crossing location or alignment to ensure a successful project.

  • While a geotechnical firm works alongside CHD to evaluate the substrate formations, a full hydrological analysis of the river will also be completed. Analysing flow patterns as well as completing habitat assessments, a hydrological study is a necessary step in the determination of both the feasibility of an HDD crossing, and the impact that it may have on the body of water being crossed.

  • Once the initial studies are done and the crossing deemed feasible, the CHD team will go to work designing the crossing. Factors such as overburden pressures and pipe stresses will be engineered and taken into consideration in order to design the most effective and efficient bore-path. While the design is taking place, the appropriate permits will be acquired to meet all local, provincial, and federal regulations.

General Contracting

  • If required by the client, CHD can act as the general contractor, handling ROW construction, rig support, pull section fabrication/testing, and reclamation upon job completion.

Drill Execution

  • Adhering to the client-approved design, the crossing will be executed to the strictest tolerances. CHD will ensure that the client is kept abreast of daily drilling activity and will be given access to the satellite linked Pason Electronic Drill Recorder (EDR) in order to maintain communication with the jobsite and effectively track costs.

  • The client will be given copies of the daily safety meetings as well as survey reports that show both drill progress and projection.

  • While drilling is underway, a proven environmental firm will continually perform turbidity tests from various locations along the river. Any drilling fluid that may migrate into the water will be identified immediately and drilling procedures will be halted while corrective measures are taken.

  • CHD’s onsite representative will notify the client representative in advance of the product installation, which will only take place with their approval. The client is encouraged to be onsite for the pulling of the line pipe.

Project Completion

  • Once the product is installed and rig out has begun, the waste drilling fluids will be environmentally tested and hauled to the secured disposal site.

  • While de-mobilization of the rig and all necessary equipment is underway the as-built documentation is compiled. Including a complete profile/plan view drawing of the pipe location, a drilling fluid parameters report, Pason pressure report, and annular pressure plot, this data is forwarded to the client in electronic format as well as hard-copy.

  • Tie-ins at both entry and exit are completed and site reclamation begins.