SOLIDS-FREE GEL, EXPANDING CEMENT REPAIR POOR PRIMARY CEMENT JOBS

Ryan Cox, Keng Seng Chan Dowell Schlumberger Canada Inc. Calgary Ineffectively cemented shallow gas sands can slowly build pressure in the casing annulus, violating environmental regulations. By use of a unique, solids-free gel to shut off well gas zones, a shallow gas sand was squeezed without fracturing the formation or forming gas channels in the cement. In the southern and south central plains of Alberta, shallow gas sands occur between 500 and 825 ft. These sands are interbedded units of

In order to access this content, you must be logged-in and have an active subscription to the OGJ Premium Archive

Subscribe

More in Discoveries