During the past 7 years, swellable elastomer technology has been so well accepted in the oilfield that its scope of application has shown an unusually rapid expansion. Its success has been due to its capability to form a permanent seal through its elastomeric expansion in hydrocarbon or water. With the increasing acceptance of this concept for the oilfield, new field applications are being explored; this paper will discuss the application of swellable elastomer packers (SEPs) in stimulation operations. These applications include acid stimulations and/or hydraulic fracturing operations. This paper will explore the technical challenges, and the resulting design concepts were developed. The design process included modeling of downhole parameters and anchoring forces as well as laboratory testing that included thermal contraction measurements that were developed to resolve the technical challenges for stimulation operations. The resulting design methodology is not limited to stimulation applications but is applicable to any scenario with dynamic loads on SEP applications such as in water injection wells, etc.Finally, case histories are provided to illustrate the successes that have been achieved using the SEP methodology developed for stimulation scenarios.
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