Enhanced recovery

Far-Field Diverters Protect Parent-Well Production in Unconventional Wells

The authors of this paper describe a project in which far-field diverters were pumped to mitigate wellbore sanding and production loss in existing parent wells.

Field-location layout and equipment setup for pumping near-wellbore and far-field diverter.
Fig. 1—Field-location layout and equipment setup for pumping near-wellbore and far-field diverter.
Source: SPE 217813.

The effect of fracture-driven interaction (FDI) is an increasing concern in mature developed unconventional plays in the US. In this study, parent-well production performance after infill‑well stimulation is evaluated to understand the effectiveness of a far-field diverter in mitigating FDIs. Studies to determine whether FDIs result in a negative or positive effect have concluded that the effect varies from basin to basin. In this project, the purpose of pumping the far-field diverter is to mitigate wellbore sanding and production loss in existing parent wells.

Introduction

The operator in this study is active in the Bakken and Three Forks formation in the Williston Basin and had experienced the negative effect of FDIs. These can occur because of close well spacing and large fluid and proppant volumes and can be exacerbated by reservoir pressure depletion caused by production.

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