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A Geosteering Success Story From the North Sea

The Nini East field represents a significant drilling challenge. The target is a post-depositionally remobilized sand reservoir with a thickness of 2‒15 m. None of the standard well-placement methods or current mapping tools was a suitable solution for the well objectives. A field test of the next-generation bed-boundary mapping tool was launched to geosteer two upcoming production wells. The two producers achieved an outstanding 0.99 and 0.96 net pay ratio with no sidetracks or delays and were completed within budget.

Introduction

The Nini East field is located 3 km south of the border between the Danish and Norwegian sectors of the North Sea (Fig. 1) and was discovered in 2001, when oil was found in the Kolga-member sandstones of the Upper Paleocene/Lower Eocene Sele formation.

This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper SPE 159132, “Geosteering the Impossible Well: A Success Story From the North Sea,” by Soazig Leveque and Christophe Dupuis, Schlumberger; Thomas Stærmose, Estela Vazquez Esmerode, and Peter Sommer Linnet, DONG E&P; and Graham Raeper, Schlumberger, prepared for the 2012 SPE Annual Technical Conference and Exhibition, San Antonio, Texas, USA, 8–10 October. The paper has not been peer reviewed.
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A Geosteering Success Story From the North Sea

01 December 2013

Volume: 65 | Issue: 12

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