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SPE Kingdom of Saudi Arabia Annual Technical Symposium and Exhibition - Productivity Enhancement from Acidizing Horizontal Wells Drilled in Thin Carbonate Reservoir Layers by Varela-Pineda, Alfonso; Fhami, Aulia; Al-Abdullah, Hassan M.; Muslim, Hassan is a scholarly article available to read on EtoBox.

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## Abstract This paper presents a careful integration of geomechanical and reservoir properties to avoid excessive fracture extension and achieve proper acid containment within a thin reservoir layer, yielding very successful results. In general, wells drilled in thin reservoir layers may not produce or sustain continuous production for an extended period, even though the reservoir may have good oil saturation and pressure support. Log derived mechanical properties and empirical correlations from lab test performed on numerous core plugs were compiled for geomechanical modeling. In addition to the density log integration, the dynamic and static mechanical properties were utilized to estimate the maximum and minimum horizontal stresses. The fracture gradient, wellhead injection pressure, acid volumes and operational requirements were determined to properly design the acid job to avoid fracturing the reservoir beyond its thickness, but effectively establishing communication between the reservoir and the bore hole. Well data gathering such as completion type, intervals to be acidized, and reservoir pressure were also incorporated during the workflow process. The approach was piloted i

Author

Varela-Pineda, Alfonso; Fhami, Aulia; Al-Abdullah, Hassan M.; Muslim, Hassan

Publisher

Society of Petroleum Engineers

Published

2017

Language

EN