--> --> Selecting Optimum Completion Designs in Deepwater Multilayered Tight Sand Applications

2019 AAPG Latin America & Caribbean Region Geosciences Technology Workshop:
Recent Discoveries and Exploration and Development Opportunities in the Guiana Basin

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Selecting Optimum Completion Designs in Deepwater Multilayered Tight Sand Applications

Abstract

Deepwater development in tight sands brings unique set of challenges. Tight sands are generally multilayered with gross pay thickness over 200ft. Low permeability reservoirs require hydraulic fracture stimulation to improve production from tight formations and sand control completion to avoid formation sand fines production. The challenging deep targets are pushing the current capabilities of many technologies in both drilling and completion applications. Multistage hydraulic fracturing technology commonly used in unconventional shale plays has recently started to be implemented in conventional low-permeability reservoirs to enhance hydrocarbon productivity. This paper presents a completion selection workflow for deepwater tight sand application. The proposed workflow process includes fracture modeling, wellbore design including tubing stress and movement analysis for fracturing treatments and production systems analysis to estimate the initial production rates and flowing bottomhole pressure for sand-free production.