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Porosity and permeability images based on crosswell seismic measurements integrated with FMI logs at the Port Mayaca aquifer, South Florida

Southwest Research Institute

Emily Richardson

South Florida Water Management District

Ned Clayton

Schlumberger Water Services

Corresponding author: jparra{at}swri.edu

Abstract

High-resolution crosswell seismic reflection data were acquired at a Port Mayaca aquifer test site about 30 miles west of the Atlantic Ocean and approximately one mile east of the eastern boundary of Lake Okeechobee in Martin County, Florida (Figure 1). Measurements were taken between monitoring wells MF-37 and EXPM-1 at an interwell separation of 1300 ft using a Z-Seis piezoceramic X series source and a 10-level hydrophone system. Multiple source and detector measurements were taken in the interval from 400 to 1700 ft (Figure 2). The objectives of the survey were to map flow-unit variability in the region between the two wells, to assess whether the high-resolution seismic survey could be resolved, detect zones of high-water production, and to map the matrix porosity/permeability.

View larger version (62K): [in this window] [in a new window]   Figure 1. Map of project location and well locations.

View larger version (99K): [in this window] [in a new window]   Figure 2. Crosswell reflection seismic and tomography images correlated with well logs from wells MF-37 and EXPM-1. The velocity tomography is superimposed to the crosswell reflection image.