Significant advancements have been made in the past few years in the areas of vertical fracture growth determination and treatment design. Techniques have been developed that use changes in the bottom hole treating pressure to describe fracture growth. In addition, open hole logs are available which will allow for the determination of vertical growth boundaries as a function of the increase in the bottom hole treating pressure.

A series of six wells have been drilled and fractured in the Clinton Formation of Northeast Ohio. Three of the wells utilized frac height logs for pressure boundary determination, while interpolation techniques were used on the other three. Fracture treatments were then designed for each individual well based on the rock properties of that well. The primary consideration in each design was vertical containment of the fracture and the placement of an effective proppant pack across the productive zone. By doing this, the productivity of the well will be increased.

The treatments were then performed and bottom hole treating pressure either calculated or monitored This pressure analysis has indicated fracture containment within the design boundaries.

This paper will discuss the treatment design procedure and results of the bottom hole treating pressure analysis. In addition, an explanation for the general lack of effectiveness of cross-linked and foamed treatment in the study area will be presented.

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