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Multilateral Offshore Well Completed With Multistage Proppant Fracturing

The complete paper discusses the successful execution of the first offshore multilateral well completed for multistage high-pressure proppant stimulation, according to the authors, in the Black Sea offshore Romania. The authors discuss the drivers that led the operator to trial a multilateral well; the selection, planning, and final completion solution; and the lessons learned.

Field Background

Lebada Vest, located 95 km offshore northeast of the city of Constanţa, is the largest offshore Romanian oil field currently in production. It was discovered in 1984 and has been in production since 1993, and thus now faces the challenges and strong investment requirements associated with a mature field. Hydraulic fracturing has been used in the field’s low-permeability-formation wells since 1992, mainly in vertical or slanted wells.

This article, written by JPT Technology Editor Judy Feder, contains highlights of paper SPE 194324, “The World’s First Offshore Multilateral Well Completed With Multistage Proppant Fracturing: A Case Study From Offshore Black Sea,” by Andrew Tomlins, OMV; Joel Conrad, SPE, Packers Plus; and Bogdan Bocaneala, OPECS, prepared for the 2019 SPE Hydraulic Fracturing Technology Conference and Exhibition, The Woodlands, Texas, 5–7 February. The paper has not been peer reviewed.

Completion Challenge

With only one platform slot left and a significant undrained area of the reservoir, the operator had to maximize hydrocarbon recovery through a single well which, because of pressure to increase daily production, had to be finalized in 1 year. Building on field experience gained since 2008 in multistage proppant stimulation, a detailed screening and evaluation of multilateral completion technologies was performed. The focus was on developing a concept that would minimize risks during execution while meeting cost and lead-time objectives, which necessitated customizing the chosen Technology Advancement for Multilaterals (TAML) Level 3 completion design and installation methodology.

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Multilateral Offshore Well Completed With Multistage Proppant Fracturing

01 May 2020

Volume: 72 | Issue: 5

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