Monday, June 8, 2009: 3:00 p.m.
MINIATURE MULTIUSE WELLS
Gonzalo Pulido, Ph.D.1 and Thomas P. Ballestero, Ph.D., PE, PH, CGWP, PG2
Abstract
2 Associate Professor, Department of Civil Engineering, University of New Hampshire. tom.ballestero@unh.edu
Gonzalo Pulido, Ph.D.1 and Thomas P. Ballestero, Ph.D., PE, PH, CGWP, PG2
Abstract
A field device, called the Miniature Multiuse Well (MMW), is conceptualized, designed and implemented as a discrete-interval isolation system for the sampling and hydraulic assessment of open wellbores with less than 2.54 cm (1 inch) diameter. Two MMW, with 1m separation, were advanced to a 3 m depth, with a portable gas-drive drill. This paper discusses the usage of the MMW for hydraulic testing including pumping tests, slug tests, and Large Displacement Slug Tests (LDST, discussed in another abstract submitted to this NGWA congress). Also, the MMW was used to collect water samples and to conduct a tracer test. The MMW is an extension of the Multipurpose Packer System (MPS), developed by the authors and published in the 2004 U.S. EPA/NGWA Fractured Rock Conference.
1President of Hidrogeocol Panamá S.A. gonzalo_pulido@hidrogeocol.com.co2 Associate Professor, Department of Civil Engineering, University of New Hampshire. tom.ballestero@unh.edu