has been set and the rig is drilling ahead towards an expected TD of 4,800 feet.
Before that could be done they had to put up with a temporary surface pipe
, which ran over three neighbours' walls and into the Hances' downstairs window - and froze up many times.
Groundwater can also be contaminated from a spill following breakage of a surface pipe
In addition to two days of in-depth learning and interaction, attendees were treated to a surface pipe
bursting demonstration by TT Technologies.
Drilling on the ETU #14-7 has commenced and surface pipe
has been set with an expected TD of 4,750 feet and is also targeting the Mississippi Lime interval.
has been set at 318 feet and drilling operations are continuing.
Conveyance facilities will also include surface pipes
or micro-tunnels to connect existing King County interceptors to the new conveyance system.
It's a low-cost alternative to rigid surface pipes
made of metal or PVC (polyvinyl chloride).