Horizontal Wells
Horizontal Remediation Wells use horizontal drilling technology to remediate contaminants in soils and groundwater. It is usually a cheaper, more efficient, less intrusive and more sustainable (less energy, lower carbon footprint) alternative to excavation and landfilling. Horizontal wells are effective with treatments such as air sparging, ISCO, stabilization, bioremediation, thermal, dual-phase extraction and other in-situ technologies and lead to expedited site closures. The table below gives a sample of the variety of sites closed by DTI using horizontal well technology.
Contaminant |
Site Type and Location |
Technology |
Regulatory Status |
Petroleum |
JFK Airport |
HRW-Air Sparge |
Closed |
Petroleum |
Tank Farm, Big Flats, NY |
HRW –Air Sparge |
Closed |
TCE |
Manufacturing Plant, Ashville, NC |
HRW-SVE/Air Sparge |
Closed |
TCE |
Beneath Building, MA |
HRW-Air Sparge |
Closed |
Transformer Oil |
Industrial Area, MA |
HRW-Air Sparge |
Closed |
Jet Fuel |
Air Force Base, NY |
HRW-Air Sparge |
Closed |
PCE |
Dry Cleaner, MD |
HRW-Blind Injection Wells |
Closed |
Gasoline |
Submarine Base, CT |
HRW-SVE |
Closed |
Arsenic |
Factory Site, NJ |
French Drain |
Closed |
PCE |
Dry Cleaner, VA |
HRW-SVE |
Closed |
Gasoline |
Gas Station, FL |
HRW-Air Sparging |
Closed |
Diesel |
Private Residence, CT |
Liquid Ring Extraction |
Closed |
Chlorinated Solvents |
Chemical Plant, NJ |
HRW-Air Sparge |
Closed |
Transformer Oil |
Transformer Station, CT |
HRW-SVE |
Closed |
Horizontal drilling technology is a proven technology that has been used in the oil fields for years. The advantages of horizontal wells for subsurface injection parallel to the are manifold: (1) Horizontal wells permit better contact of the remediation treatment than verticals wells, (2) there is a large zone of influence created by horiozntal wells and (3) there are cost savings.
DTI also has to opportunity to deliver such treatments as surfactants, oxidants, and nanoparticles such as zerovalent iron (ZVI) thru horizontal wells.
DTI has been implementing horizontal drilling projects for environmental clients for the past 20 years. Our clients and partners include environmental consultants, Fortune 500 companies, federal agencies, and small businesses. Please call us at (203) 294-9200 or email drilling@directionaltech.com for more information.