HORIZONTAL SYSTEMS TECHNOLOGY FOR SHALLOW-SITE REMEDIATION

Innovations in drilling and completion technology for horizontal wellbores maximize the hydrologic benefits of horizontal wells for aquifer remediation. In many hydrologic scenarios, horizontal wells exhibit groundwater flow characteristics, drawdown distribution, and contaminant capture capabilities superior to those of vertical wells. In addition, comparison of installation, operation, and maintenance costs for vertical and horizontal groundwater-recovery systems reveals substantial savings engendered by horizontal wells, despite higher drilling costs. Development of a casing drilling and completion system, described in detail in this paper, has allowed the environmental industry to begin reaping the benefits of horizontal wells, which include safer, more efficient remediation operations.