Trenchlessly installed subteranean collector drain for surface and subsurface water

A drawdown trenchless collector apparatus for directing surface and/or subsurface fluids from a target collection and drainage area to a designated reception location, comprising:

• a collection pipe having first and second terminal ends spaced apart by an outer cylindrical wall;
• one or more fluid drawdown points in the outer cylindrical wall configured at a level for passively drawing surface and/or subsurface fluid at a desired hydrostatic level into the collection pipe;
• and
• the first terminal end of the collection pipe adapted to attach to a drain pipe for transferring fluid through a gravity drain pipe.

A trenchless collector system configured to direct surface and/or subsurface fluids from a target collection and drainage area to a designated reception location, comprising:

• a drainage pipe installed at a target collection and drainage area by trenchless operation;
• one or more drawdown points generally vertically from ground surface to the drainage pipe;
• a collection pipe installed within the one or more drawdown points for passing surface and/or subsurface fluid into the collection pipe;
• and
• one end of the collection pipe connected to the drainage pipe and an opposite end open to the surface for passively drawing surface and/or subsurface fluid into the collection pipe from the target collection and drainage area.

A method for retrofitting a gravity drain pipe for passively draining surface and subsurface fluid from a collection and drainage area, comprising:

• providing a collection pipe;
• identifying drawdown points associated with a buried gravity drainage pipe;
• using minimally invasive methods for accessing the buried gravity drainage pipe at a target collection and drainage area for surface and/or subsurface fluid;
• attaching an end of the collection pipe to the buried gravity drainage pipe;
• orienting the collection pipe with an end open to atmosphere;
• and
• moving fluid from the target collection and drainage area into the buried gravity drainage pipe through the collection pipe.

A method for retrofitting a gravity drain pipe for passively draining surface and subsurface fluid from a collection and drainage area, comprising:

• identifying drawdown points associated with a buried gravity drainage pipe;
• robotically perforating the pipe walls at a target collection and drainage area for surface and/or subsurface fluid;
• inserting a filter media inside the pipe at the perforated locations;
• and moving fluid from the target collection and drainage area into the buried gravity drainage pipe through the collection pipe.