This study examined parent-child well interaction in three stacked producing formations in an unconventional field in the Midland Basin. By combining geochemical fingerprinting to determine which formations were being drained along with pressure interference analysis, microseismic data, petrophysical data, and production results, we identified important trends that may affect landing and spacing decisions in future infill drilling and multi-bench development plans.

This paper describes a new workflow for integrating lithology, Oil-in-Place Index (OIPI), Rock Quality Index (RQI), and microseismic data to measure the influence of the parent wells on the child wells and the vertical drainage patterns of all the horizontal wells in the study area. Understanding these interactions and drainage volumes may lead to better field development planning and aid in decision making on the viability of field development projects.

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