Sept. 24, 2003


Making the effort to understand well performance - the rate and pressure behavior of a well over its productive life - provides the opportunity to discover the key elements driving stimulation and completion effectiveness. This presentation demonstrates the integrated use of reservoir engineering tools to evaluate well performance, identify flow regimes, and distinguish between reservoir and completion induced behavior. These tools include well log analysis, reciprocal productivity semilog method, type-curve analysis, material balance, pressure buildup analysis (prefracture and postfracture), finite-difference reservoir simulation, and systems analysis.

Case studies of single wells and entire fields draining low permeability gas reservoirs are used to demonstrate this methodology, and significant reservoir, completion, and production factors affecting well performance are identified as an outcome. The above results are compared to history-matched output from 3D or pseudo-3D hydraulic fracturing simulators, comparing the simulated hydraulic fracture characteristics with the actual impact of the emplaced fracture, offering additional clues to stimulation effectiveness. The impact of critical completion and production factors, such as wellbore liquid loading, treatment fluid and proppant volumes, proppant concentration, fracturing fluid systems, treatment isolation strategies and sequencing of multipay completions, treatment flowback strategy, use of velocity/tubing strings and selection of landing depths, and shutting in a producing well, will be discussed. Remedies are suggested for stimulation and completion induced problems.

Featured Speakers



Buddy Woodroof

Date and Time

Wed, Sept. 24, 2003

11:30 a.m. - 1 p.m.
(GMT-0500) US/Central

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The Westlake Club