--> Abstract: Wild Goose Gas Storage Project - A New Use for an Old Field, by I. K. Kirkland, K. P. James, and J. B. Carlson; #90920 (1999).

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Wild Goose Storage Inc., Calgary, AB, Canada

Abstract: Wild Goose Gas Storage Project - A New Use for an Old Field

The Wild Goose field, located in the Sacramento Basin, produced 100 BCF from 12 zones in the Kione Formation from 1951 to 1988. During the summer of 1998, Wild Goose began its second life as four wells were drilled to develop 14 BCF of working gas in the first market based gas storage facility in California. Injection of cushion gas commenced in September 1998. Wild Goose was selected because of its excellent reservoir quality, continuity of reservoir sands, uniform drainage during primary production and proximity to pipeline.

The L4 sandstone storage reservoir was developed with one vertical well and three horizontal wells drilled from a small pad. The vertical well was cored to obtain valuable reservoir data and was completed as a monitoring well. Three horizontal injection/withdrawal wells were successfully drilled in the top part of the structure with horizontal legs ranging from 495-677 feet. Poor to moderate consolidation of the reservoir sandstone increased risk for successful horizontal drilling, but the wellbore was kept in excellent condition by the polymer mud system. The reservoir consists of subangular, poorly sorted, fine to medium grained sandstone with minor granules. The silt size fraction is significant, ranging from 8-18% by weight. Ambient core porosity typically ranges from 32-40%. Permeability is exceptional with variations controlled by grain size, sorting, silt and clay content and carbonate cement.

Due to the high sanding potential of the semi-consolidated Kione reservoir sand, the horizontal wells were completed with wire wrapped screens and gravel packed.

AAPG Search and Discovery Article #90920©1999 AAPG Pacific Section Meeting, Monterey, California