Refracturing of Multistage Horizontal Wells in PJSC Gazprom Neft

Abstract

Since 2011 most newly commissioned wells at Gazprom Neft fields are horizontal (Hz), subjected to multi-stage hydraulic fracturing (multi-stage frac). To date, about 1,300 horizontal wells with multi-stage frac, equipped with packer-port liner assemblies (non-cemented), ball- activated, including about 800 wells equipped with single-action fracturing collars, have been drilled at the Company's fields.