Understanding the Role of Well Sequencing in Managing Reservoir StressResponse in the Permian: Implications for Child-Well Completions UsingHigh-Resolution Microseismic Analysis

摘要

In this case study,three sequential well pads were designed,stimulated and monitored to evaluate 1.Treatment order of stacked wells across multiple benches,2.Completions optimization in proximity toa parent well and 3.The efficacy of treatment sequence in proximity to parent wells.Microseismic datawere evaluated in conjunction with tracer and pressure data to provide a more detailed understanding ofreservoir deformation and well connectivity using statistical approaches that consider the collective behaviorof seismicity.High-resolution microseismic involves analyzing spatio-temporal trends in seismicity ratherthan reliance on microseismic event clouds to provide more meaningful assessment of hydraulically-linked seismicity vs.stress-driven seismicity.The findings of the first two case studies were applied to thestimulation of the third well pad to demonstrate the role of well sequencing in proximity to depleted zonesand the impacts of completions design in managing well communication.Here we discuss the benefit ofhigh-resolution microseismic in assessing perceived well interference by delineating the difference betweenhydraulically-linked and stress-driven seismicity recorded during multi-well hydraulic fracturing programs.In applying knowledge of reservoir deformation processes to customize stimulation programs,operatorshave additional tools to help manage reservoir stress,limit unwanted well communication and optimizeproduction.