Energy Policy Act of 2005 (Ultra-deepwater and Unconventional Resources Program)
Coupled Flow-Geomechanical-Geophysical-Geochemical (F3G) Analysis of Tight Gas Production
Lawrence Berkeley National Laboratory (LBNL)
Texas A&M University
Baker Hughes Inc.
Unconventional Gas Resources, Inc.
The objectives of this project are to a) develop and implement an integrated methodology for constructing geomechanical models of tight gas systems (shale), b) investigate by means of theoretical analysis, nu-merical simulation, laboratory studies and field experiments the interrelation between the geomechanical and geophysical behavior of such systems in the course of well completion and stimulation and c) develop models of the coupled flow, geomechanical geophysical and geochemical behavior of fractured tight gas systems from the earliest stages of well stimulation to long-term production.
- New knowledge (a) establishing the relationship between changes in the pressure regime and the geomechanical status of the system, (b) determining the long-term behavior of the fracture system and its effect on production, and (c) possible geophysical markers that can track the evolution of the flow properties and fracture characteristics of the reservoir under production and allow system monitoring and prediction of long-term behavior.
- Improved pressure/production curves for the description of long-term production.
- A minimum of 3 publications and a final project report.
This study will provide new knowledge for application by the oil and gas industry, including a) how to design optimized production systems, b) the underlying relationship between changes in the pres-sure regime and the geomechanical status of a tight gas system, c) the long-term behavior of the in-duced and natural fracture systems and the effect on production, d) possible geophysical markers that can track the evolution of the flow properties and fracture characteristics of the reservoir under pro-duction and allow system monitoring and prediction of long-term behavior, e) a quantitative method-ology and numerical model of radon and helium transport for evaluating enhanced extraction tech-niques, f) improved well and well stimulation designs, g) improved pressure/production curves, and g) publications in high-visibility journals of interest to the oil and gas industry
Principal Investigators: George Moridis (LBNL), Thomas Blasingame (Texas A&M University), Mark Zoback (Stanford University)