Shallow depth, coiled tubing horizontal drilling system

A method for using coiled tubing to drill and backream a substantially horizontal shallow depth borehole through the earth for the placement of transmission or conveyance lines therein, said method comprising the steps of:

• storing a length of coiled tubing on a storage reel;
• unwinding the coiled tubing from said storage reel;
• guiding one end of said length of coiled tubing from said storage reel to a coiled tubing injector head;
• guiding the free end of said coiled tubing through said coiled tubing injector head;
• attaching an orienting tool to the free end of said coiled tubing;
• attaching a tracking device to said orienting tool;
• attaching a drill bit and drill motor to said orienting tool;
• inserting said drill bit, drill motor, orienting tool and tracking device through the earth's surface from above at an acute angle;
• causing said drill bit, drill motor, orienting tool, tracking device, and the coiled tubing to be pushed through the earth in a first direction by said coiled tubing injector head and rotating said drill motor to create a substantially horizontal shallow depth borehole;
• causing said drill bit, drill motor, orienting tool, and tracking device to pass back through the earth's surface from below;
• causing an attached back reamer, said drill and drill motor, said guide tool, and the coiled tubing to be pulled through the earth in a second direction, opposite to said first direction, by said coiled tubing injector head to enlarge the substantially horizontal shallow depth borehole.

A system for creating a substantially horizontal shallow depth borehole lined by a transmission or conveyance line through the earth, said system comprising:

• a coiled tubing drill string having a leading end;
• a reel assembly for winding, storing, and unwinding said coiled tubing drill string;
• a drilling assembly mounted to the leading end of said coiled tubing drill string, said drilling assembly including a tracking device, a drill motor, and a drill bit;
• an injector head for guiding said coiled tubing drill string into the borehole at an acute angle to the earth's surface, for pushing said coiled tubing through the earth and to exit the earth's surface, for pulling said coiled tubing from the borehole, and for lining the borehole with a transmission or conveyance line;
• a connector for connecting said transmission or conveyance pipe to the leading end of the coiled tubing drill string to enable the transmission or conveyance pipe to be drawn into the borehole as said coiled tubing is pulled from the borehole.