AAPG: Tight Gas Reservoirs Room Exhibit Hall A Poster session is from 8:30 AM to 12:30 PM Co-Chairs: S. P. Dutton and S. P. Cumella
	G. W. Shurr: Shallow Gas Systems in Tight Reservoirs on Basin Margins
	S. P. Cumella, S. Laubach, O. Ortega, A. Makowitz, P. Rijken: Natural Fracture and Diagenetic Controls on Producibility of Low Permeability, Upper Cretaceous Williams Fork Formation Sandstones, Piceance Basin, Colorado
	B. S. Hart, T. Engler, R. Pearson, R. L. Robinson: 3-D Seismic Horizon-Based Approaches to Fracture-Swarm Sweet Spot
	R. H. Lander, J. F. W. Gale, S. E. Laubach, L. M. Bonnell: Interaction Between Quartz Cementation and Fracturing in Sandstones
	K. D. Combs, K. J. Smart, R. M. Slatt: Surface Fracture Characterization of Jackfork Group Turbidite Sandstones in the Ouachita Mountains, Oklahoma: Implications for Gas Exploration